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-rw-r--r--Makefile3
-rw-r--r--aufsaetze.vymbin3067 -> 0 bytes
-rw-r--r--hw_altium_livedesign/bsp/altium-livedesign-xc3s1000.ucf397
-rw-r--r--hw_altium_livedesign/bsp/build.sh31
-rw-r--r--hw_altium_livedesign/bsp/top.prj1
-rw-r--r--hw_altium_livedesign/bsp/top.ut29
-rw-r--r--hw_altium_livedesign/bsp/top.vhd122
-rw-r--r--hw_altium_livedesign/bsp/top.xst56
-rw-r--r--hw_godil/bsp/build.sh28
-rw-r--r--hw_godil/bsp/godil_xc3s500e.ucf95
-rw-r--r--hw_godil/bsp/top.prj1
-rw-r--r--hw_godil/bsp/top.ut22
-rw-r--r--hw_godil/bsp/top.vhd42
-rw-r--r--hw_godil/bsp/top.xst56
-rw-r--r--hw_godil/doc/godil500_Ueberblick_leiterplatte.odgbin116255 -> 0 bytes
-rw-r--r--hw_godil/godil_xc3s500e_zpu_zealot_implementation.tar.gzbin5048 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/bsp/avnet-eval-xc5vfx30t.ucf470
-rw-r--r--hw_v5_fx30t_extension/bsp/build.sh28
-rw-r--r--hw_v5_fx30t_extension/bsp/top.prj1
-rw-r--r--hw_v5_fx30t_extension/bsp/top.ut39
-rw-r--r--hw_v5_fx30t_extension/bsp/top.vhd189
-rw-r--r--hw_v5_fx30t_extension/bsp/top.xst60
-rw-r--r--hw_v5_fx30t_extension/future_extension/Audio_codec/see_altium_data_sheet.txt0
-rw-r--r--hw_v5_fx30t_extension/future_extension/NanoBoard 3000XN Schematics (Xilinx variant).pdfbin9107601 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/future_extension/PS2/pins.txt4
-rw-r--r--hw_v5_fx30t_extension/future_extension/PS2/ps2.pngbin12582 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/future_extension/PS2/ps2_connector.pngbin12620 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/future_extension/SD_card/pins.txt7
-rw-r--r--hw_v5_fx30t_extension/future_extension/VGA_out/pins.txt8
-rw-r--r--hw_v5_fx30t_extension/future_extension/VGA_out/vga_connector.pngbin20390 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/future_extension/VGA_out/vga_out.pngbin36062 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/future_extension/VGA_out/video_dac.pngbin78969 -> 0 bytes
-rw-r--r--hw_v5_fx30t_extension/readme.txt18
-rw-r--r--hw_v5_fx30t_extension/rtl/top.vhd144
-rw-r--r--hw_v5_fx30t_extension/simulation/Makefile46
-rw-r--r--hw_v5_fx30t_extension/simulation/run.do65
-rw-r--r--hw_v5_fx30t_extension/simulation/vhdl_files.txt1
-rw-r--r--ieee_proposed/doc/link.txt1
-rw-r--r--ieee_proposed/rtl/env_c.vhd48
-rw-r--r--ieee_proposed/rtl/fixed_float_types_c.vhd34
-rw-r--r--ieee_proposed/rtl/fixed_pkg_c.vhd8390
-rw-r--r--ieee_proposed/rtl/float_pkg_c.vhd7190
-rw-r--r--ieee_proposed/rtl/numeric_std_additions.vhd2886
-rw-r--r--ieee_proposed/rtl/numeric_std_unsigned_c.vhd2207
-rw-r--r--ieee_proposed/rtl/standard_additions_c.vhd2073
-rw-r--r--ieee_proposed/rtl/standard_textio_additions_c.vhd478
-rw-r--r--ieee_proposed/rtl/std_logic_1164_additions.vhd1808
-rw-r--r--ieee_proposed/rtl_tb/fixed_synth.vhd741
-rw-r--r--ieee_proposed/rtl_tb/float_synth.vhd712
-rw-r--r--ieee_proposed/rtl_tb/test_fixed_synth.vhd439
-rw-r--r--ieee_proposed/rtl_tb/test_float_synth.vhd892
-rw-r--r--ieee_proposed/simulation/modelsim.ini3
-rw-r--r--library_dependencies.dot8
-rw-r--r--library_dependencies.pdfbin9999 -> 0 bytes
-rw-r--r--mig_test/readme.txt14
-rw-r--r--mig_test/rtl/Makefile30
-rw-r--r--mig_test/rtl/box.vhd432
-rw-r--r--mig_test/rtl/top.vhd697
-rw-r--r--mig_test/rtl/zpu_config.vhd61
-rw-r--r--mig_test/rtl_tb/top_tb.vhd408
-rw-r--r--mig_test/simulation/Makefile67
-rw-r--r--mig_test/simulation/run.do65
-rw-r--r--mig_test/simulation/wave.do27
-rw-r--r--mig_test/software/Makefile89
-rw-r--r--mig_test/software/ambainfo.c216
-rw-r--r--mig_test/software/ambainfo.h16
-rw-r--r--mig_test/software/include/common.h23
-rw-r--r--mig_test/software/include/lcd-routines.h167
-rw-r--r--mig_test/software/include/peripherie.h323
-rw-r--r--mig_test/software/include/timer.h49
-rw-r--r--mig_test/software/include/types.h43
-rw-r--r--mig_test/software/include/uart.h25
-rw-r--r--mig_test/software/include/vga.h18
-rw-r--r--mig_test/software/lib/crt0.S973
-rw-r--r--mig_test/software/lib/divmod.c50
-rw-r--r--mig_test/software/lib/premain.c26
-rw-r--r--mig_test/software/lib/udivmodsi4.c24
-rw-r--r--mig_test/software/libhal/Makefile31
-rw-r--r--mig_test/software/libhal/common.c203
-rw-r--r--mig_test/software/libhal/hw.c28
-rw-r--r--mig_test/software/libhal/include.mak16
-rw-r--r--mig_test/software/libhal/timer.c132
-rw-r--r--mig_test/software/libhal/uart.c56
-rw-r--r--mig_test/software/libhal/vga.c67
-rw-r--r--mig_test/software/main.c296
-rw-r--r--mig_test/software/monitor.c225
-rw-r--r--mig_test/software/monitor.h67
-rw-r--r--mig_test/software/monitor_functions.c134
-rw-r--r--mig_test/software/monitor_functions.h24
-rw-r--r--mig_test/software/schedule.c144
-rw-r--r--mig_test/software/schedule.h25
-rw-r--r--mig_test/synthesis/Makefile474
-rw-r--r--mig_test/synthesis/top.ucf312
-rw-r--r--mig_test/vhdl_files.txt93
-rw-r--r--rechner/uts/bin/wakeonlan262
-rw-r--r--rechner/uts/startconnection.sh57
-rw-r--r--set_mod_bits.sh56
-rw-r--r--test_rrobin_problem/readme.txt26
-rw-r--r--test_rrobin_problem/rtl/box.vhd229
-rw-r--r--test_rrobin_problem/rtl/led_control_ahb.vhd137
-rw-r--r--test_rrobin_problem/rtl/top.vhd535
-rw-r--r--test_rrobin_problem/rtl_tb/top_tb.vhd465
-rw-r--r--test_rrobin_problem/simulation/Makefile55
-rw-r--r--test_rrobin_problem/simulation/run.do71
-rw-r--r--test_rrobin_problem/simulation/vhdl_files.txt22
-rw-r--r--test_rrobin_problem/simulation/wave.do27
-rw-r--r--test_rrobin_problem/synthesis/Makefile205
-rw-r--r--test_rrobin_problem/synthesis/program_fpga.cmd8
-rw-r--r--test_rrobin_problem/synthesis/program_spi.cmd9
-rw-r--r--test_rrobin_problem/synthesis/sp601.ucf372
-rw-r--r--test_rrobin_problem/synthesis/top.ut30
-rw-r--r--test_rrobin_problem/synthesis/top.xst53
-rw-r--r--tobuy.txt14
-rw-r--r--tomake.txt48
-rw-r--r--tool_makefile/Makefile.synthesis.digilent_s3e203
-rw-r--r--tool_makefile/Makefile.synthesis.sp601204
-rw-r--r--tool_makefile/Makefile.synthesis.sp605204
-rw-r--r--treemap/Makefile67
-rw-r--r--treemap/convert.xsl110
-rw-r--r--uc_arm/checkliste.txt63
-rw-r--r--uc_str912/erase_flash/Makefile10
-rw-r--r--uc_str912/erase_flash/erase.S3
-rw-r--r--uc_str912/erase_flash/erase_jlink.gdb7
-rw-r--r--uc_str912/openocd/amontec.sh3
-rw-r--r--uc_str912/openocd/openocd_amontec.cfg26
-rw-r--r--uc_str912/openocd/openocd_segger.cfg6
-rw-r--r--uc_str912/openocd/segger.sh2
-rw-r--r--uc_str912/openocd/str912.cfg131
-rw-r--r--uc_str912/prj_TEST_LED/Makefile496
-rw-r--r--uc_str912/prj_TEST_LED/STR91x-RAM.ld218
-rw-r--r--uc_str912/prj_TEST_LED/STR91x-ROM.ld221
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_ahbapb.h60
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_conf.h115
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_fmi.h184
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_gpio.h93
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_lib.h114
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_map.h878
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_scu.h196
-rw-r--r--uc_str912/prj_TEST_LED/include/91x_type.h50
-rw-r--r--uc_str912/prj_TEST_LED/led.c122
-rw-r--r--uc_str912/prj_TEST_LED/load_segger.gdb20
-rw-r--r--uc_str912/prj_TEST_LED/startup.s233
-rw-r--r--uc_str912/prj_TEST_LED/str91x_lib/91x_ahbapb.c177
-rw-r--r--uc_str912/prj_TEST_LED/str91x_lib/91x_fmi.c519
-rw-r--r--uc_str912/prj_TEST_LED/str91x_lib/91x_gpio.c407
-rw-r--r--uc_str912/prj_TEST_LED/str91x_lib/91x_lib.c281
-rw-r--r--uc_str912/prj_TEST_LED/str91x_lib/91x_scu.c661
-rw-r--r--uc_str912/prj_TEST_LED/vector.s202
-rw-r--r--uc_str912/prj_TEST_LED/vectors.c462
-rw-r--r--uc_str912/prj_TEST_LED/vectors.h67
-rw-r--r--uc_str912/prj_blinky_complex_startup/91x_conf.h118
-rw-r--r--uc_str912/prj_blinky_complex_startup/Makefile463
-rw-r--r--uc_str912/prj_blinky_complex_startup/defines.h67
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_adc.h124
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_ahbapb.h60
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_can.h165
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_dma.h247
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_emi.h83
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_fmi.h184
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_gpio.h93
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_i2c.h112
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_it.h73
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_lib.h114
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_map.h878
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_mc.h144
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_rtc.h109
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_scu.h196
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_ssp.h119
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_tim.h155
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_type.h50
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_uart.h174
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_vic.h94
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_wdg.h82
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/91x_wiu.h99
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_core.h145
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_def.h68
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_init.h45
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_lib.h25
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_mem.h23
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_regs.h442
-rw-r--r--uc_str912/prj_blinky_complex_startup/include/usb_type.h31
-rw-r--r--uc_str912/prj_blinky_complex_startup/interrupt.c295
-rw-r--r--uc_str912/prj_blinky_complex_startup/inthandler.S94
-rw-r--r--uc_str912/prj_blinky_complex_startup/load_segger.gdb23
-rw-r--r--uc_str912/prj_blinky_complex_startup/main.c173
-rw-r--r--uc_str912/prj_blinky_complex_startup/main.h55
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_adc.c590
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_ahbapb.c177
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_can.c769
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_dma.c1125
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_emi.c167
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_fmi.c519
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_gpio.c407
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_i2c.c616
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_lib.c281
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_mc.c932
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_rtc.c400
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_scu.c661
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_ssp.c469
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-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_uart.c658
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_vic.c830
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_wdg.c277
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/91x_wiu.c190
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/usb_core.c860
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/usb_init.c64
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/usb_int.c95
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/usb_mem.c85
-rw-r--r--uc_str912/prj_blinky_complex_startup/src/usb_regs.c1000
-rw-r--r--uc_str912/prj_blinky_complex_startup/startup912.S405
-rw-r--r--uc_str912/prj_blinky_complex_startup/startup912.S_old361
-rw-r--r--uc_str912/prj_blinky_complex_startup/startup_generic.S162
-rw-r--r--uc_str912/prj_blinky_complex_startup/syscalls.c180
-rw-r--r--uc_str912/prj_blinky_simple_startup/Makefile495
-rw-r--r--uc_str912/prj_blinky_simple_startup/STR91x-RAM.ld218
-rw-r--r--uc_str912/prj_blinky_simple_startup/STR91x-ROM.ld221
-rw-r--r--uc_str912/prj_blinky_simple_startup/include/vectors.h67
-rw-r--r--uc_str912/prj_blinky_simple_startup/load_segger.gdb20
-rw-r--r--uc_str912/prj_blinky_simple_startup/src/main.c102
-rw-r--r--uc_str912/prj_blinky_simple_startup/src/startup.s233
-rw-r--r--uc_str912/prj_blinky_simple_startup/src/vector.s202
-rw-r--r--uc_str912/prj_blinky_simple_startup/src/vectors.c462
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/Makefile38
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_adc.h124
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_ahbapb.h60
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_can.h165
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_conf.h117
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_dma.h247
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_emi.h83
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_fmi.h184
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_gpio.h93
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_i2c.h112
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_it.h73
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_lib.h113
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_map.h878
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-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/include/91x_rtc.h109
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-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_adc.c590
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-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_can.c768
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-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_fmi.c519
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_gpio.c407
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_i2c.c616
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_lib.c281
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-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_rtc.c400
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_scu.c661
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_ssp.c469
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_tim.c694
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_uart.c658
-rw-r--r--uc_str912/prj_blinky_simple_startup/str91x_lib/src/91x_vic.c830
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-rw-r--r--uc_str912/prj_main_add/Makefile146
-rw-r--r--uc_str912/prj_main_add/dram.bat1
-rw-r--r--uc_str912/prj_main_add/inc/typedefs.h50
-rw-r--r--uc_str912/prj_main_add/prj/eclipse_ram.gdb24
-rw-r--r--uc_str912/prj_main_add/prj/eclipse_rom.gdb24
-rw-r--r--uc_str912/prj_main_add/prj/jtagkey.cfg59
-rw-r--r--uc_str912/prj_main_add/prj/str912_program.script2
-rw-r--r--uc_str912/prj_main_add/prj/str912_ram.gdb22
-rw-r--r--uc_str912/prj_main_add/prj/str912_ram.ld218
-rw-r--r--uc_str912/prj_main_add/prj/str912_reset.script2
-rw-r--r--uc_str912/prj_main_add/prj/str912_rom.gdb22
-rw-r--r--uc_str912/prj_main_add/prj/str912_rom.ld249
-rw-r--r--uc_str912/prj_main_add/segger.gdb17
-rw-r--r--uc_str912/prj_main_add/src/main.c91
-rw-r--r--uc_str912/prj_main_add/src/startup.s222
-rw-r--r--uc_str912/prj_template91x/Makefile495
-rw-r--r--uc_str912/prj_template91x/STR91x-RAM.ld218
-rw-r--r--uc_str912/prj_template91x/STR91x-ROM.ld221
-rw-r--r--uc_str912/prj_template91x/include/vectors.h67
-rw-r--r--uc_str912/prj_template91x/load_segger.gdb23
-rw-r--r--uc_str912/prj_template91x/src/main.c43
-rw-r--r--uc_str912/prj_template91x/src/startup.S233
-rw-r--r--uc_str912/prj_template91x/src/vector.S202
-rw-r--r--uc_str912/prj_template91x/src/vectors.c462
-rw-r--r--uc_str912/prj_template91x/str91x_lib/Makefile38
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_adc.h124
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_ahbapb.h60
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_can.h165
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_conf.h117
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_dma.h247
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_emi.h83
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_fmi.h184
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_gpio.h93
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_i2c.h112
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_it.h73
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_lib.h113
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_map.h878
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_mc.h144
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_rtc.h109
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_scu.h198
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_ssp.h119
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_tim.h155
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_type.h50
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_uart.h174
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_vic.h94
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_wdg.h82
-rw-r--r--uc_str912/prj_template91x/str91x_lib/include/91x_wiu.h99
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_adc.c590
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_ahbapb.c177
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_can.c768
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_dma.c1125
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_emi.c167
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_fmi.c519
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_gpio.c407
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_i2c.c616
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_lib.c281
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_mc.c932
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_rtc.c400
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_scu.c661
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_ssp.c469
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_tim.c694
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_uart.c658
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_vic.c830
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_wdg.c277
-rw-r--r--uc_str912/prj_template91x/str91x_lib/src/91x_wiu.c190
-rw-r--r--uc_str912/prj_test_lcd/Makefile496
-rw-r--r--uc_str912/prj_test_lcd/STR91x-ROM.ld221
-rw-r--r--uc_str912/prj_test_lcd/include/91x_ahbapb.h60
-rw-r--r--uc_str912/prj_test_lcd/include/91x_conf.h115
-rw-r--r--uc_str912/prj_test_lcd/include/91x_fmi.h184
-rw-r--r--uc_str912/prj_test_lcd/include/91x_gpio.h93
-rw-r--r--uc_str912/prj_test_lcd/include/91x_lib.h114
-rw-r--r--uc_str912/prj_test_lcd/include/91x_map.h878
-rw-r--r--uc_str912/prj_test_lcd/include/91x_scu.h196
-rw-r--r--uc_str912/prj_test_lcd/include/91x_type.h50
-rw-r--r--uc_str912/prj_test_lcd/include/char_code.h79
-rw-r--r--uc_str912/prj_test_lcd/include/lcd_lib_91x.h63
-rw-r--r--uc_str912/prj_test_lcd/include/vectors.h67
-rw-r--r--uc_str912/prj_test_lcd/load_amontec.gdb15
-rw-r--r--uc_str912/prj_test_lcd/load_segger.gdb20
-rw-r--r--uc_str912/prj_test_lcd/src/lcd.c93
-rw-r--r--uc_str912/prj_test_lcd/src/lcd_lib_91x.c455
-rw-r--r--uc_str912/prj_test_lcd/src/startup.s233
-rw-r--r--uc_str912/prj_test_lcd/src/vector.s202
-rw-r--r--uc_str912/prj_test_lcd/src/vectors.c462
-rw-r--r--uc_str912/prj_test_lcd/str91x_lib/91x_ahbapb.c177
-rw-r--r--uc_str912/prj_test_lcd/str91x_lib/91x_fmi.c519
-rw-r--r--uc_str912/prj_test_lcd/str91x_lib/91x_gpio.c407
-rw-r--r--uc_str912/prj_test_lcd/str91x_lib/91x_lib.c281
-rw-r--r--uc_str912/prj_test_lcd/str91x_lib/91x_scu.c661
-rw-r--r--uc_str912/scripts/flash_str9.ld137
-rw-r--r--uc_str912/scripts/load.gdb24
-rw-r--r--uc_str912/scripts/load_amontec.gdb20
-rw-r--r--uc_str912/scripts/load_segger.gdb18
-rw-r--r--uc_str912/scripts/str912_rom.ld249
-rw-r--r--uc_str912/scripts/str912fw44.ld61
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_flash.gdb6
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_flasherase.ocd6
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_flashprobe.gdb10
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_flashprogram.ocd7
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_jtagkey-flash-erase.cfg43
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_jtagkey-flash-program.cfg43
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_jtagkey.cfg42
-rw-r--r--uc_str912/scripts/str91x-configs/str91x_ram.gdb6
-rw-r--r--uc_str912/scripts/test.gdb42
-rw-r--r--uc_str912/segger.gdb17
-rw-r--r--vhdl_arithmetik/VHDL_arithmetic.csv77
-rw-r--r--vhdl_arithmetik/VHDL_arithmetic.odsbin17476 -> 0 bytes
-rw-r--r--vhdl_arithmetik/VHDL_arithmetic.pdfbin80547 -> 0 bytes
-rw-r--r--vhdl_arithmetik/VHDL_arithmetic.xlsbin86528 -> 0 bytes
-rw-r--r--vhdl_arithmetik/VHDL_arithmetic.xlsxbin39198 -> 0 bytes
374 files changed, 0 insertions, 102561 deletions
diff --git a/Makefile b/Makefile
deleted file mode 100644
index 37e8083..0000000
--- a/Makefile
+++ /dev/null
@@ -1,3 +0,0 @@
-library_dependencies.pdf: library_dependencies.dot
- dot -Tpdf $< > $@
-
diff --git a/aufsaetze.vym b/aufsaetze.vym
deleted file mode 100644
index d1f75cb..0000000
--- a/aufsaetze.vym
+++ /dev/null
Binary files differ
diff --git a/hw_altium_livedesign/bsp/altium-livedesign-xc3s1000.ucf b/hw_altium_livedesign/bsp/altium-livedesign-xc3s1000.ucf
deleted file mode 100644
index e01e492..0000000
--- a/hw_altium_livedesign/bsp/altium-livedesign-xc3s1000.ucf
+++ /dev/null
@@ -1,397 +0,0 @@
-############################################################
-# Altium Livedesign Evaluation Board constraints file
-#
-# Familiy: Spartan-3
-# Device: XC3S1000
-# Package: FG456C
-# Speed: -4
-#
-# all banks are powered with 3.3V
-#
-# config pins (M2, M1, M0): 101
-
-############################################################
-## clock/timing constraints
-############################################################
-
-NET "clk" period = 50 MHz ;
-
-
-############################################################
-## pin placement constraints
-############################################################
-
-NET "clk" LOC = AA12 | IOSTANDARD = LVCMOS33 | TNM_NET = "clk";
-NET "reset_n" LOC = Y17 | IOSTANDARD = LVCMOS33; # low active
-
-# Soft JTAG
-NET "soft_tdo" LOC = D22 | IOSTANDARD = LVCMOS33;
-NET "soft_tms" LOC = E21 | IOSTANDARD = LVCMOS33;
-NET "soft_tdi" LOC = E22 | IOSTANDARD = LVCMOS33;
-NET "soft_tck" LOC = F21 | IOSTANDARD = LVCMOS33;
-
-# SRAM 0
-NET "sram0_a<0>" LOC = L6 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<1>" LOC = K4 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<2>" LOC = H5 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<3>" LOC = G6 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<4>" LOC = F3 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<5>" LOC = G1 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<6>" LOC = G2 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<7>" LOC = K3 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<8>" LOC = T2 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<9>" LOC = T1 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<10>" LOC = U2 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<11>" LOC = V3 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<12>" LOC = V1 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<13>" LOC = W1 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<14>" LOC = V2 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<15>" LOC = V5 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<16>" LOC = V4 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<17>" LOC = U5 | IOSTANDARD = LVCMOS33;
-NET "sram0_a<18>" LOC = U6 | IOSTANDARD = LVCMOS33; # n.c.
-NET "sram0_d<0>" LOC = L4 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<1>" LOC = L3 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<2>" LOC = M5 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<3>" LOC = M4 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<4>" LOC = M3 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<5>" LOC = N4 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<6>" LOC = N3 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<7>" LOC = T5 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<8>" LOC = T4 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<9>" LOC = T6 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<10>" LOC = M6 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<11>" LOC = N2 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<12>" LOC = N1 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<13>" LOC = M2 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<14>" LOC = M1 | IOSTANDARD = LVCMOS33;
-NET "sram0_d<15>" LOC = L2 | IOSTANDARD = LVCMOS33;
-NET "sram0_cs_n" LOC = L5 | IOSTANDARD = LVCMOS33;
-NET "sram0_lb_n" LOC = L1 | IOSTANDARD = LVCMOS33;
-NET "sram0_ub_n" LOC = K2 | IOSTANDARD = LVCMOS33;
-NET "sram0_we_n" LOC = U4 | IOSTANDARD = LVCMOS33;
-NET "sram0_oe_n" LOC = K1 | IOSTANDARD = LVCMOS33;
-
-# SRAM 1
-NET "sram1_a<0>" LOC = K21 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<1>" LOC = K22 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<2>" LOC = K20 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<3>" LOC = G21 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<4>" LOC = G22 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<5>" LOC = M17 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<6>" LOC = L18 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<7>" LOC = K19 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<8>" LOC = V19 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<9>" LOC = W20 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<10>" LOC = W19 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<11>" LOC = Y20 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<12>" LOC = Y21 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<13>" LOC = Y22 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<14>" LOC = W21 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<15>" LOC = W22 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<16>" LOC = V21 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<17>" LOC = V22 | IOSTANDARD = LVCMOS33;
-NET "sram1_a<18>" LOC = V20 | IOSTANDARD = LVCMOS33; # n.c.
-NET "sram1_d<0>" LOC = L21 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<1>" LOC = M22 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<2>" LOC = M21 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<3>" LOC = N22 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<4>" LOC = N21 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<5>" LOC = U20 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<6>" LOC = T22 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<7>" LOC = T21 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<8>" LOC = V18 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<9>" LOC = U19 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<10>" LOC = U18 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<11>" LOC = T18 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<12>" LOC = R18 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<13>" LOC = T17 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<14>" LOC = M18 | IOSTANDARD = LVCMOS33;
-NET "sram1_d<15>" LOC = M20 | IOSTANDARD = LVCMOS33;
-NET "sram1_cs_n" LOC = L22 | IOSTANDARD = LVCMOS33;
-NET "sram1_lb_n" LOC = M19 | IOSTANDARD = LVCMOS33;
-NET "sram1_ub_n" LOC = L20 | IOSTANDARD = LVCMOS33;
-NET "sram1_we_n" LOC = U21 | IOSTANDARD = LVCMOS33;
-NET "sram1_oe_n" LOC = L19 | IOSTANDARD = LVCMOS33;
-
-# RS232
-NET "rs232_rx" LOC = A5 | IOSTANDARD = LVCMOS33;
-NET "rs232_tx" LOC = F7 | IOSTANDARD = LVCMOS33;
-NET "rs232_cts" LOC = F2 | IOSTANDARD = LVCMOS33;
-NET "rs232_rts" LOC = E1 | IOSTANDARD = LVCMOS33;
-
-# 2x PS2 connectors
-NET "mouse_clk" LOC = L17 | IOSTANDARD = LVCMOS33;
-NET "mouse_data" LOC = G18 | IOSTANDARD = LVCMOS33;
-NET "kbd_clk" LOC = F20 | IOSTANDARD = LVCMOS33;
-NET "kbd_data" LOC = G19 | IOSTANDARD = LVCMOS33;
-
-
-# VGA output (2**9 = 512 colors)
-NET "vga_blue<7>" LOC = E14 | IOSTANDARD = LVCMOS33;
-NET "vga_blue<6>" LOC = A13 | IOSTANDARD = LVCMOS33;
-NET "vga_blue<5>" LOC = C13 | IOSTANDARD = LVCMOS33;
-NET "vga_green<7>" LOC = E11 | IOSTANDARD = LVCMOS33;
-NET "vga_green<6>" LOC = C11 | IOSTANDARD = LVCMOS33;
-NET "vga_green<5>" LOC = D10 | IOSTANDARD = LVCMOS33;
-NET "vga_red<7>" LOC = D6 | IOSTANDARD = LVCMOS33;
-NET "vga_red<6>" LOC = D7 | IOSTANDARD = LVCMOS33;
-NET "vga_red<5>" LOC = D9 | IOSTANDARD = LVCMOS33;
-NET "vga_hsync" LOC = A8 | IOSTANDARD = LVCMOS33;
-NET "vga_vsync" LOC = B14 | IOSTANDARD = LVCMOS33;
-
-
-# Stereo Audio out
-NET "audio_r" LOC = U3 | IOSTANDARD = LVCMOS33;
-NET "audio_l" LOC = W3 | IOSTANDARD = LVCMOS33;
-
-
-# GPIO DIP switches 7..0 left..right, low active
-NET "switch_n<0>" LOC = Y6 | IOSTANDARD = LVCMOS33;
-NET "switch_n<1>" LOC = V6 | IOSTANDARD = LVCMOS33;
-NET "switch_n<2>" LOC = U7 | IOSTANDARD = LVCMOS33;
-NET "switch_n<3>" LOC = AA4 | IOSTANDARD = LVCMOS33;
-NET "switch_n<4>" LOC = AB4 | IOSTANDARD = LVCMOS33;
-NET "switch_n<5>" LOC = AA5 | IOSTANDARD = LVCMOS33;
-NET "switch_n<6>" LOC = AB5 | IOSTANDARD = LVCMOS33;
-NET "switch_n<7>" LOC = AA6 | IOSTANDARD = LVCMOS33;
-
-# GPIO push buttons, low active
-NET "button_n<5>" LOC = C21 | IOSTANDARD = LVCMOS33;
-NET "button_n<4>" LOC = B20 | IOSTANDARD = LVCMOS33;
-NET "button_n<3>" LOC = A15 | IOSTANDARD = LVCMOS33;
-NET "button_n<2>" LOC = B6 | IOSTANDARD = LVCMOS33;
-NET "button_n<1>" LOC = C1 | IOSTANDARD = LVCMOS33;
-NET "button_n<0>" LOC = D1 | IOSTANDARD = LVCMOS33;
-
-# GPIO LEDs
-NET "led<7>" LOC = W6 | IOSTANDARD = LVCMOS33;
-NET "led<6>" LOC = Y5 | IOSTANDARD = LVCMOS33;
-NET "led<5>" LOC = W5 | IOSTANDARD = LVCMOS33;
-NET "led<4>" LOC = W4 | IOSTANDARD = LVCMOS33;
-NET "led<3>" LOC = Y3 | IOSTANDARD = LVCMOS33;
-NET "led<2>" LOC = Y2 | IOSTANDARD = LVCMOS33;
-NET "led<1>" LOC = Y1 | IOSTANDARD = LVCMOS33;
-NET "led<0>" LOC = W2 | IOSTANDARD = LVCMOS33;
-
-# seven segment display (5=left 0=right)
-#
-# segment assignment:
-# .ABCDEFG
-# 76543210
-NET "dig0_seg<7>" LOC = E20 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<6>" LOC = C22 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<5>" LOC = E18 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<4>" LOC = D20 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<3>" LOC = D21 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<2>" LOC = E19 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<1>" LOC = G17 | IOSTANDARD = LVCMOS33;
-NET "dig0_seg<0>" LOC = F19 | IOSTANDARD = LVCMOS33;
-
-NET "dig1_seg<7>" LOC = F17 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<6>" LOC = D18 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<5>" LOC = B19 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<4>" LOC = C18 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<3>" LOC = C19 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<2>" LOC = C20 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<1>" LOC = F18 | IOSTANDARD = LVCMOS33;
-NET "dig1_seg<0>" LOC = D19 | IOSTANDARD = LVCMOS33;
-
-NET "dig2_seg<7>" LOC = A19 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<6>" LOC = E17 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<5>" LOC = C17 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<4>" LOC = D17 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<3>" LOC = B15 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<2>" LOC = A18 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<1>" LOC = B18 | IOSTANDARD = LVCMOS33;
-NET "dig2_seg<0>" LOC = B17 | IOSTANDARD = LVCMOS33;
-
-NET "dig3_seg<7>" LOC = D15 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<6>" LOC = E13 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<5>" LOC = B13 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<4>" LOC = D13 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<3>" LOC = D14 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<2>" LOC = A14 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<1>" LOC = E16 | IOSTANDARD = LVCMOS33;
-NET "dig3_seg<0>" LOC = E15 | IOSTANDARD = LVCMOS33;
-
-NET "dig4_seg<7>" LOC = D11 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<6>" LOC = E9 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<5>" LOC = A10 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<4>" LOC = B9 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<3>" LOC = A9 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<2>" LOC = C10 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<1>" LOC = A12 | IOSTANDARD = LVCMOS33;
-NET "dig4_seg<0>" LOC = B10 | IOSTANDARD = LVCMOS33;
-
-NET "dig5_seg<7>" LOC = C7 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<6>" LOC = A4 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<5>" LOC = B5 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<4>" LOC = E6 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<3>" LOC = C5 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<2>" LOC = E7 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<1>" LOC = B8 | IOSTANDARD = LVCMOS33;
-NET "dig5_seg<0>" LOC = C6 | IOSTANDARD = LVCMOS33;
-
-
-# Header A (left)
-NET "header_a<2>" LOC = V7 | IOSTANDARD = LVCMOS33;
-NET "header_a<3>" LOC = AA8 | IOSTANDARD = LVCMOS33;
-NET "header_a<4>" LOC = AB8 | IOSTANDARD = LVCMOS33;
-NET "header_a<5>" LOC = V8 | IOSTANDARD = LVCMOS33;
-NET "header_a<6>" LOC = Y10 | IOSTANDARD = LVCMOS33;
-NET "header_a<7>" LOC = V9 | IOSTANDARD = LVCMOS33;
-NET "header_a<8>" LOC = W9 | IOSTANDARD = LVCMOS33;
-NET "header_a<9>" LOC = AA10 | IOSTANDARD = LVCMOS33;
-NET "header_a<10>" LOC = AB10 | IOSTANDARD = LVCMOS33;
-NET "header_a<11>" LOC = W10 | IOSTANDARD = LVCMOS33;
-NET "header_a<12>" LOC = AB11 | IOSTANDARD = LVCMOS33;
-NET "header_a<13>" LOC = U11 | IOSTANDARD = LVCMOS33;
-NET "header_a<14>" LOC = AB13 | IOSTANDARD = LVCMOS33;
-NET "header_a<15>" LOC = AA13 | IOSTANDARD = LVCMOS33;
-NET "header_a<16>" LOC = V10 | IOSTANDARD = LVCMOS33;
-NET "header_a<17>" LOC = U10 | IOSTANDARD = LVCMOS33;
-NET "header_a<18>" LOC = W13 | IOSTANDARD = LVCMOS33;
-NET "header_a<19>" LOC = Y13 | IOSTANDARD = LVCMOS33;
-
-# Header B (right)
-NET "header_b<2>" LOC = V14 | IOSTANDARD = LVCMOS33;
-NET "header_b<3>" LOC = V13 | IOSTANDARD = LVCMOS33;
-NET "header_b<4>" LOC = AA15 | IOSTANDARD = LVCMOS33;
-NET "header_b<5>" LOC = W14 | IOSTANDARD = LVCMOS33;
-NET "header_b<6>" LOC = AB15 | IOSTANDARD = LVCMOS33;
-NET "header_b<7>" LOC = Y16 | IOSTANDARD = LVCMOS33;
-NET "header_b<8>" LOC = AA17 | IOSTANDARD = LVCMOS33;
-NET "header_b<9>" LOC = AA18 | IOSTANDARD = LVCMOS33;
-NET "header_b<10>" LOC = AB18 | IOSTANDARD = LVCMOS33;
-NET "header_b<11>" LOC = Y18 | IOSTANDARD = LVCMOS33;
-NET "header_b<12>" LOC = Y19 | IOSTANDARD = LVCMOS33;
-NET "header_b<13>" LOC = AB20 | IOSTANDARD = LVCMOS33;
-NET "header_b<14>" LOC = AA20 | IOSTANDARD = LVCMOS33;
-NET "header_b<15>" LOC = U16 | IOSTANDARD = LVCMOS33;
-NET "header_b<16>" LOC = V16 | IOSTANDARD = LVCMOS33;
-NET "header_b<17>" LOC = V17 | IOSTANDARD = LVCMOS33;
-NET "header_b<18>" LOC = W16 | IOSTANDARD = LVCMOS33;
-NET "header_b<19>" LOC = W17 | IOSTANDARD = LVCMOS33;
-
-# usused pins
-CONFIG PROHIBIT = A3;
-CONFIG PROHIBIT = A7;
-CONFIG PROHIBIT = A11;
-CONFIG PROHIBIT = A16;
-CONFIG PROHIBIT = AA3;
-CONFIG PROHIBIT = AA7;
-CONFIG PROHIBIT = AA9;
-CONFIG PROHIBIT = AA11;
-CONFIG PROHIBIT = AA14;
-CONFIG PROHIBIT = AA16;
-CONFIG PROHIBIT = AA19;
-CONFIG PROHIBIT = AB7;
-CONFIG PROHIBIT = AB9;
-CONFIG PROHIBIT = AB12;
-CONFIG PROHIBIT = AB14;
-CONFIG PROHIBIT = AB16;
-CONFIG PROHIBIT = AB19;
-CONFIG PROHIBIT = B4;
-CONFIG PROHIBIT = B7;
-CONFIG PROHIBIT = B12;
-CONFIG PROHIBIT = B11;
-CONFIG PROHIBIT = B16;
-CONFIG PROHIBIT = C2;
-CONFIG PROHIBIT = C3;
-CONFIG PROHIBIT = C4;
-CONFIG PROHIBIT = C12;
-CONFIG PROHIBIT = C16;
-CONFIG PROHIBIT = D2;
-CONFIG PROHIBIT = D3;
-CONFIG PROHIBIT = D4;
-CONFIG PROHIBIT = D5;
-CONFIG PROHIBIT = D8;
-CONFIG PROHIBIT = D12;
-CONFIG PROHIBIT = D16;
-CONFIG PROHIBIT = E2;
-CONFIG PROHIBIT = E3;
-CONFIG PROHIBIT = E8;
-CONFIG PROHIBIT = E4;
-CONFIG PROHIBIT = E5;
-CONFIG PROHIBIT = F4;
-CONFIG PROHIBIT = E10;
-CONFIG PROHIBIT = E12;
-CONFIG PROHIBIT = F12;
-CONFIG PROHIBIT = F5;
-CONFIG PROHIBIT = F13;
-CONFIG PROHIBIT = F6;
-CONFIG PROHIBIT = F9;
-CONFIG PROHIBIT = F10;
-CONFIG PROHIBIT = F16;
-CONFIG PROHIBIT = F11;
-CONFIG PROHIBIT = F14;
-CONFIG PROHIBIT = G3;
-CONFIG PROHIBIT = G4;
-CONFIG PROHIBIT = G5;
-CONFIG PROHIBIT = G20;
-CONFIG PROHIBIT = H1;
-CONFIG PROHIBIT = H2;
-CONFIG PROHIBIT = H4;
-CONFIG PROHIBIT = H18;
-CONFIG PROHIBIT = H19;
-CONFIG PROHIBIT = H21;
-CONFIG PROHIBIT = H22;
-CONFIG PROHIBIT = J1;
-CONFIG PROHIBIT = J2;
-CONFIG PROHIBIT = J4;
-CONFIG PROHIBIT = J5;
-CONFIG PROHIBIT = J6;
-CONFIG PROHIBIT = J17;
-CONFIG PROHIBIT = J18;
-CONFIG PROHIBIT = J19;
-CONFIG PROHIBIT = J21;
-CONFIG PROHIBIT = J22;
-CONFIG PROHIBIT = K5;
-CONFIG PROHIBIT = K6;
-CONFIG PROHIBIT = K17;
-CONFIG PROHIBIT = K18;
-CONFIG PROHIBIT = N5;
-CONFIG PROHIBIT = N6;
-CONFIG PROHIBIT = N17;
-CONFIG PROHIBIT = N18;
-CONFIG PROHIBIT = N19;
-CONFIG PROHIBIT = N20;
-CONFIG PROHIBIT = P1;
-CONFIG PROHIBIT = P2;
-CONFIG PROHIBIT = P4;
-CONFIG PROHIBIT = P5;
-CONFIG PROHIBIT = P6;
-CONFIG PROHIBIT = P17;
-CONFIG PROHIBIT = P18;
-CONFIG PROHIBIT = P19;
-CONFIG PROHIBIT = P21;
-CONFIG PROHIBIT = P22;
-CONFIG PROHIBIT = R1;
-CONFIG PROHIBIT = R2;
-CONFIG PROHIBIT = R4;
-CONFIG PROHIBIT = R5;
-CONFIG PROHIBIT = R19;
-CONFIG PROHIBIT = R21;
-CONFIG PROHIBIT = R22;
-CONFIG PROHIBIT = T3;
-CONFIG PROHIBIT = T19;
-CONFIG PROHIBIT = T20;
-CONFIG PROHIBIT = U9;
-CONFIG PROHIBIT = U12;
-CONFIG PROHIBIT = U13;
-CONFIG PROHIBIT = U14;
-CONFIG PROHIBIT = U17;
-CONFIG PROHIBIT = V11;
-CONFIG PROHIBIT = V12;
-CONFIG PROHIBIT = V15;
-CONFIG PROHIBIT = W7;
-CONFIG PROHIBIT = W8;
-CONFIG PROHIBIT = W11;
-CONFIG PROHIBIT = W12;
-CONFIG PROHIBIT = W15;
-CONFIG PROHIBIT = W18;
-CONFIG PROHIBIT = Y4;
-CONFIG PROHIBIT = Y7;
-CONFIG PROHIBIT = Y11;
-CONFIG PROHIBIT = Y12;
diff --git a/hw_altium_livedesign/bsp/build.sh b/hw_altium_livedesign/bsp/build.sh
deleted file mode 100644
index 9a3f4ee..0000000
--- a/hw_altium_livedesign/bsp/build.sh
+++ /dev/null
@@ -1,31 +0,0 @@
-# need project files:
-# top.xst
-# top.prj
-# top.ut
-
-# need Xilinx tools:
-# xst
-# ngdbuild
-# map
-# par
-# trce
-# bitgen
-
-echo "########################"
-echo "generate build directory"
-mkdir build
-cd build
-mkdir tmp
-
-echo "###############"
-echo "start processes"
-xst -ifn "../top.xst" -ofn "top.syr"
-ngdbuild -dd _ngo -nt timestamp -uc ../altium-livedesign-xc3s1000.ucf -p xc3s1000-fg456-4 top.ngc top.ngd
-map -p xc3s1000-fg456-4 -cm area -ir off -pr off -c 100 -o top_map.ncd top.ngd top.pcf
-par -w -ol high -t 1 top_map.ncd top.ncd top.pcf
-trce -v 3 -s 4 -n 3 -fastpaths -xml top.twx top.ncd -o top.twr top.pcf
-bitgen -f ../top.ut top.ncd
-
-echo "###########"
-echo "get bitfile"
-cp top.bit ..
diff --git a/hw_altium_livedesign/bsp/top.prj b/hw_altium_livedesign/bsp/top.prj
deleted file mode 100644
index 3975c05..0000000
--- a/hw_altium_livedesign/bsp/top.prj
+++ /dev/null
@@ -1 +0,0 @@
-vhdl work "../top.vhd"
diff --git a/hw_altium_livedesign/bsp/top.ut b/hw_altium_livedesign/bsp/top.ut
deleted file mode 100644
index 765a6f3..0000000
--- a/hw_altium_livedesign/bsp/top.ut
+++ /dev/null
@@ -1,29 +0,0 @@
--w
--g DebugBitstream:No
--g Binary:no
--g CRC:Enable
--g ConfigRate:6
--g CclkPin:PullUp
--g M0Pin:PullUp
--g M1Pin:PullUp
--g M2Pin:PullUp
--g ProgPin:PullUp
--g DonePin:PullUp
--g HswapenPin:PullUp
--g TckPin:PullUp
--g TdiPin:PullUp
--g TdoPin:PullUp
--g TmsPin:PullUp
--g UnusedPin:PullDown
--g UserID:0xFFFFFFFF
--g DCMShutdown:Disable
--g DCIUpdateMode:AsRequired
--g StartUpClk:CClk
--g DONE_cycle:4
--g GTS_cycle:5
--g GWE_cycle:6
--g LCK_cycle:NoWait
--g Match_cycle:Auto
--g Security:None
--g DonePipe:No
--g DriveDone:No
diff --git a/hw_altium_livedesign/bsp/top.vhd b/hw_altium_livedesign/bsp/top.vhd
deleted file mode 100644
index 5d5125b..0000000
--- a/hw_altium_livedesign/bsp/top.vhd
+++ /dev/null
@@ -1,122 +0,0 @@
-library ieee;
-use ieee.std_logic_1164.all;
-
-
-entity top is
- port (
- clk : in std_logic;
- reset_n : in std_logic;
- --
- -- soft JTAG
- soft_tdo : out std_logic;
- soft_tms : in std_logic;
- soft_tdi : in std_logic;
- soft_tck : in std_logic;
- --
- -- SRAM 0 (256k x 16) pin connections
- sram0_a : out std_logic_vector(18 downto 0);
- sram0_d : inout std_logic_vector(15 downto 0);
- sram0_lb_n : out std_logic;
- sram0_ub_n : out std_logic;
- sram0_cs_n : out std_logic; -- chip select
- sram0_we_n : out std_logic; -- write-enable
- sram0_oe_n : out std_logic; -- output enable
- --
- -- SRAM 1 (256k x 16) pin connections
- sram1_a : out std_logic_vector(18 downto 0);
- sram1_d : inout std_logic_vector(15 downto 0);
- sram1_lb_n : out std_logic;
- sram1_ub_n : out std_logic;
- sram1_cs_n : out std_logic; -- chip select
- sram1_we_n : out std_logic; -- write-enable
- sram1_oe_n : out std_logic; -- output enable
- --
- -- RS232
- rs232_rx : in std_logic;
- rs232_tx : out std_logic;
- rs232_cts : in std_logic;
- rs232_rts : out std_logic;
- --
- -- PS2 connectors
- mouse_clk : inout std_logic;
- mouse_data : inout std_logic;
- kbd_clk : inout std_logic;
- kbd_data : inout std_logic;
- --
- -- vga output
- vga_red : out std_logic_vector(7 downto 5);
- vga_green : out std_logic_vector(7 downto 5);
- vga_blue : out std_logic_vector(7 downto 5);
- vga_hsync : out std_logic;
- vga_vsync : out std_logic;
- --
- -- Audio out
- audio_r : out std_logic;
- audio_l : out std_logic;
- --
- -- GPIOs
- switch_n : in std_logic_vector(7 downto 0);
- button_n : in std_logic_vector(5 downto 0);
- led : out std_logic_vector(7 downto 0);
- --
- -- seven segment display
- dig0_seg : out std_logic_vector(7 downto 0);
- dig1_seg : out std_logic_vector(7 downto 0);
- dig2_seg : out std_logic_vector(7 downto 0);
- dig3_seg : out std_logic_vector(7 downto 0);
- dig4_seg : out std_logic_vector(7 downto 0);
- dig5_seg : out std_logic_vector(7 downto 0);
- --
- -- User Header A
- header_a : inout std_logic_vector(19 downto 2);
- header_b : inout std_logic_vector(19 downto 2)
- );
-end entity top;
-
-architecture rtl of top is
-
-
-begin
-
- -- default output drivers
- -- to pass bitgen DRC
- soft_tdo <= '1';
- --
- sram0_a <= (others => '1');
- sram0_lb_n <= '1';
- sram0_ub_n <= '1';
- sram0_cs_n <= '1';
- sram0_we_n <= '1';
- sram0_oe_n <= '1';
- --
- sram1_a <= (others => '1');
- sram1_lb_n <= '1';
- sram1_ub_n <= '1';
- sram1_cs_n <= '1';
- sram1_we_n <= '1';
- sram1_oe_n <= '1';
- --
- rs232_tx <= '1';
- rs232_rts <= '1';
- --
- vga_red <= (others => '1');
- vga_green <= (others => '1');
- vga_blue <= (others => '1');
- vga_hsync <= '1';
- vga_vsync <= '1';
- --
- audio_r <= '0';
- audio_l <= '0';
- --
- led <= (others => '0');
- --
- dig0_seg <= (others => '0');
- dig1_seg <= (others => '0');
- dig2_seg <= (others => '0');
- dig3_seg <= (others => '0');
- dig4_seg <= (others => '0');
- dig5_seg <= (others => '0');
-
-
-end architecture rtl;
-
diff --git a/hw_altium_livedesign/bsp/top.xst b/hw_altium_livedesign/bsp/top.xst
deleted file mode 100644
index 4a39af8..0000000
--- a/hw_altium_livedesign/bsp/top.xst
+++ /dev/null
@@ -1,56 +0,0 @@
-set -tmpdir "tmp"
-set -xsthdpdir "xst"
-run
--ifn ../top.prj
--ifmt mixed
--ofn top
--ofmt NGC
--p xc3s1000-4-fg456
--top top
--opt_mode Speed
--opt_level 1
--iuc NO
--keep_hierarchy No
--netlist_hierarchy As_Optimized
--rtlview Yes
--glob_opt AllClockNets
--read_cores YES
--write_timing_constraints NO
--cross_clock_analysis NO
--hierarchy_separator /
--bus_delimiter <>
--case Maintain
--slice_utilization_ratio 100
--bram_utilization_ratio 100
--verilog2001 YES
--fsm_extract YES -fsm_encoding Auto
--safe_implementation No
--fsm_style LUT
--ram_extract Yes
--ram_style Auto
--rom_extract Yes
--mux_style Auto
--decoder_extract YES
--priority_extract Yes
--shreg_extract YES
--shift_extract YES
--xor_collapse YES
--rom_style Auto
--auto_bram_packing NO
--mux_extract Yes
--resource_sharing YES
--async_to_sync NO
--mult_style Auto
--iobuf YES
--max_fanout 500
--bufg 8
--register_duplication YES
--register_balancing No
--slice_packing YES
--optimize_primitives NO
--use_clock_enable Yes
--use_sync_set Yes
--use_sync_reset Yes
--iob Auto
--equivalent_register_removal YES
--slice_utilization_ratio_maxmargin 5
diff --git a/hw_godil/bsp/build.sh b/hw_godil/bsp/build.sh
deleted file mode 100644
index 3ec68a0..0000000
--- a/hw_godil/bsp/build.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-# need project files:
-# top.xst
-# top.prj
-# top.ut
-
-# need Xilinx tools:
-# xst
-# ngdbuild
-# map
-# par
-# trce
-# bitgen
-
-# generate build directory
-mkdir build
-cd build
-mkdir tmp
-
-# start processes
-xst -ifn "../top.xst" -ofn "top.syr"
-ngdbuild -dd _ngo -nt timestamp -uc ../godil_xc3s500e.ucf -p xc3s500e-vq100-4 top.ngc top.ngd
-map -p xc3s500e-vq100-4 -cm area -ir off -pr off -c 100 -o top_map.ncd top.ngd top.pcf
-par -w -ol high -t 1 top_map.ncd top.ncd top.pcf
-trce -v 3 -s 4 -n 3 -fastpaths -xml top.twx top.ncd -o top.twr top.pcf
-bitgen -f ../top.ut top.ncd
-
-# get bitfile
-cp top.bit ..
diff --git a/hw_godil/bsp/godil_xc3s500e.ucf b/hw_godil/bsp/godil_xc3s500e.ucf
deleted file mode 100644
index 3b36614..0000000
--- a/hw_godil/bsp/godil_xc3s500e.ucf
+++ /dev/null
@@ -1,95 +0,0 @@
-############################################################
-# GODIL Board Constraints File
-#
-# Family: Spartan3E
-# Device: XC3S500E
-# Package: VQ100
-# Speed: -4
-#
-# all "pin"-IOs are equipped with level shifters
-
-
-############################################################
-## clock/timing constraints
-############################################################
-
-NET "m49" PERIOD = 50 MHz ;
-
-
-############################################################
-## pin placement constraints
-############################################################
-
-# inputs only
-NET "m49" LOC=P89 | IOSTANDARD = LVCMOS33 ;
-NET "sw1" LOC=P39 | IOSTANDARD = LVCMOS33 ;
-NET "sw2" LOC=P69 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "c13" LOC=P38 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "d13" LOC=P88 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "sout" LOC=P13 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "rts" LOC=P30 | IOSTANDARD = LVCMOS33 | PULLUP ;
-
-# I/O's for uart & spi flash
-NET "sin" LOC=P43 | IOSTANDARD = LVCMOS33 ;
-NET "cts" LOC=P25 | IOSTANDARD = LVCMOS33 ;
-NET "cso" LOC=P24 | IOSTANDARD = LVCMOS33 ;
-NET "vs2" LOC=P47 | IOSTANDARD = LVCMOS33 ;
-
-# I/O's for test connector
-NET "tvs1" LOC=P48 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-NET "tvs0" LOC=P49 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-NET "tmosi" LOC=P27 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-NET "tdin" LOC=P44 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-NET "tcclk" LOC=P50 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-NET "tm1" LOC=P42 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-NET "thsw" LOC=P99 | IOSTANDARD = LVCMOS33 | DRIVE=16 ;
-
-# I/O's for DIL / main connector
-NET "pin<1>" LOC=P26 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<2>" LOC=P15 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<3>" LOC=P16 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<4>" LOC=P95 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<5>" LOC=P18 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<6>" LOC=P17 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<7>" LOC=P94 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<8>" LOC=P22 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<9>" LOC=P23 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<10>" LOC=P33 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<11>" LOC=P32 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<12>" LOC=P34 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<13>" LOC=P40 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<14>" LOC=P41 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<15>" LOC=P36 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<16>" LOC=P35 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<17>" LOC=P53 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<18>" LOC=P54 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<19>" LOC=P57 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<20>" LOC=P58 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<21>" LOC=P60 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<22>" LOC=P61 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<23>" LOC=P62 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<24>" LOC=P63 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<25>" LOC=P65 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<26>" LOC=P66 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<27>" LOC=P67 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<28>" LOC=P68 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<29>" LOC=P70 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<30>" LOC=P71 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<31>" LOC=P86 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<32>" LOC=P84 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<33>" LOC=P83 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<34>" LOC=P78 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<35>" LOC=P79 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<36>" LOC=P85 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<37>" LOC=P92 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<38>" LOC=P98 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<39>" LOC=P3 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<40>" LOC=P2 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<41>" LOC=P4 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<42>" LOC=P5 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<43>" LOC=P90 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<44>" LOC=P9 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<45>" LOC=P10 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<46>" LOC=P11 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<47>" LOC=P12 | IOSTANDARD = LVCMOS33 | PULLUP ;
-NET "pin<48>" LOC=P91 | IOSTANDARD = LVCMOS33 | PULLUP ;
diff --git a/hw_godil/bsp/top.prj b/hw_godil/bsp/top.prj
deleted file mode 100644
index 3975c05..0000000
--- a/hw_godil/bsp/top.prj
+++ /dev/null
@@ -1 +0,0 @@
-vhdl work "../top.vhd"
diff --git a/hw_godil/bsp/top.ut b/hw_godil/bsp/top.ut
deleted file mode 100644
index 06de8d5..0000000
--- a/hw_godil/bsp/top.ut
+++ /dev/null
@@ -1,22 +0,0 @@
--w
--g DebugBitstream:No
--g Binary:no
--g CRC:Enable
--g ConfigRate:1
--g ProgPin:PullUp
--g DonePin:PullUp
--g TckPin:PullUp
--g TdiPin:PullUp
--g TdoPin:PullUp
--g TmsPin:PullUp
--g UnusedPin:PullDown
--g UserID:0xFFFFFFFF
--g DCMShutdown:Disable
--g StartUpClk:CClk
--g DONE_cycle:4
--g GTS_cycle:5
--g GWE_cycle:6
--g LCK_cycle:NoWait
--g Security:None
--g DonePipe:No
--g DriveDone:No
diff --git a/hw_godil/bsp/top.vhd b/hw_godil/bsp/top.vhd
deleted file mode 100644
index bd11e08..0000000
--- a/hw_godil/bsp/top.vhd
+++ /dev/null
@@ -1,42 +0,0 @@
--- top module of
--- GODIL
-
-
-library ieee;
-use ieee.std_logic_1164.all;
-
-
-entity top is
- port (
- m49 : in std_logic; -- oscillator input
- -- GPIO
- sw1 : in std_logic; -- switch 1, high active
- sw2 : in std_logic; -- switch 2, low active
- -- TUSB3410
- sin : inout std_logic; -- M0 configuration pin, TUSB3410 serial data input, LED3
- sout : in std_logic; -- TUSB3410 serial data out
- rts : in std_logic; -- TUSB3410 ready to send (LED5)
- cts : inout std_logic; -- TUSB3410 clear to send (and LED6)
- vs2 : inout std_logic; -- TUSB3410 I2C connection, LED8
- tvs1 : inout std_logic; -- TUSB3410 I2C connector (and E2)
- -- SPI flash
- cso : inout std_logic; -- SPI memory chip select
- tmosi : inout std_logic; -- SPI memory mosi (and E4)
- tdin : inout std_logic; -- SPI memory data out (and E5)
- tcclk : inout std_logic; -- SPI memory clock (and E6)
- -- remaining IO pins
- c13 : in std_logic; -- external input (pin 49)
- d13 : in std_logic; -- external input (pin 50)
- tvs0 : inout std_logic; -- E3
- tm1 : inout std_logic; -- M1 configuration pin (and E7)
- thsw : inout std_logic; -- HSWAP configuration pin (and E8)
- -- I/O's for DIL / main connector
- pin : inout std_logic_vector(48 downto 1)
- );
-end entity top;
-
-
-architecture rtl of top is
-
-begin
-end architecture rtl;
diff --git a/hw_godil/bsp/top.xst b/hw_godil/bsp/top.xst
deleted file mode 100644
index 6f6b603..0000000
--- a/hw_godil/bsp/top.xst
+++ /dev/null
@@ -1,56 +0,0 @@
-set -tmpdir "tmp"
-set -xsthdpdir "xst"
-run
--ifn ../top.prj
--ifmt mixed
--ofn top
--ofmt NGC
--p xc3s500e-4-vq100
--top top
--opt_mode Speed
--opt_level 1
--iuc NO
--keep_hierarchy No
--netlist_hierarchy As_Optimized
--rtlview Yes
--glob_opt AllClockNets
--read_cores YES
--write_timing_constraints NO
--cross_clock_analysis NO
--hierarchy_separator /
--bus_delimiter <>
--case Maintain
--slice_utilization_ratio 100
--bram_utilization_ratio 100
--verilog2001 YES
--fsm_extract YES -fsm_encoding Auto
--safe_implementation No
--fsm_style LUT
--ram_extract Yes
--ram_style Auto
--rom_extract Yes
--mux_style Auto
--decoder_extract YES
--priority_extract Yes
--shreg_extract YES
--shift_extract YES
--xor_collapse YES
--rom_style Auto
--auto_bram_packing NO
--mux_extract Yes
--resource_sharing YES
--async_to_sync NO
--mult_style Auto
--iobuf YES
--max_fanout 500
--bufg 24
--register_duplication YES
--register_balancing No
--slice_packing YES
--optimize_primitives NO
--use_clock_enable Yes
--use_sync_set Yes
--use_sync_reset Yes
--iob Auto
--equivalent_register_removal YES
--slice_utilization_ratio_maxmargin 5
diff --git a/hw_godil/doc/godil500_Ueberblick_leiterplatte.odg b/hw_godil/doc/godil500_Ueberblick_leiterplatte.odg
deleted file mode 100644
index 66b0eb3..0000000
--- a/hw_godil/doc/godil500_Ueberblick_leiterplatte.odg
+++ /dev/null
Binary files differ
diff --git a/hw_godil/godil_xc3s500e_zpu_zealot_implementation.tar.gz b/hw_godil/godil_xc3s500e_zpu_zealot_implementation.tar.gz
deleted file mode 100644
index 5715aa8..0000000
--- a/hw_godil/godil_xc3s500e_zpu_zealot_implementation.tar.gz
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/bsp/avnet-eval-xc5vfx30t.ucf b/hw_v5_fx30t_extension/bsp/avnet-eval-xc5vfx30t.ucf
deleted file mode 100644
index 085c55e..0000000
--- a/hw_v5_fx30t_extension/bsp/avnet-eval-xc5vfx30t.ucf
+++ /dev/null
@@ -1,470 +0,0 @@
-############################################################
-# Avnet Virtex 5 FX Evaluation Board constraints file
-#
-# Familiy: Virtex5
-# Device: XC5VFX30T
-# Package: FF665
-# Speed: -1
-#
-#
-# Bank 0 3.3V
-# Bank 1 3.3V
-# Bank 2 3.3V
-# Bank 3 3.3V
-# Bank 4 2.5V or 3.3V (JP2, VIO_EXP1_DP), here 2.5V
-# Bank 11 1.8V
-# Bank 12 3.3V
-# Bank 13 1.8V
-# Bank 15 3.3V
-# Bank 16 2.5V or 3.3V (JP3, VIO_EXP1_SE), here 2.5V
-# Bank 17 1.8V
-# Bank 18 2.5V or 3.3V (JP2, VIO_EXP1_DP), here 2.5V
-
-
-############################################################
-## clock/timing constraints
-############################################################
-
-TIMESPEC "TS_clk_100" = PERIOD "clk_100" 100 MHz;
-
-
-############################################################
-## pin placement constraints
-############################################################
-
-NET "clk_100MHz" LOC= E18 | IOSTANDARD = LVCMOS33 | TNM_NET = "clk_100";
-NET "clk_socket" LOC= E13 | IOSTANDARD = LVCMOS33;
-NET "user_clk_p" LOC= AB15 ;
-NET "user_clk_n" LOC= AC16 ;
-
-# RS232
-NET "RS232_RX" LOC= K8 | IOSTANDARD = LVCMOS33;
-NET "RS232_TX" LOC= L8 | IOSTANDARD = LVCMOS33;
-NET "RS232_RTS" LOC= N8 | IOSTANDARD = LVCMOS33; # Jumper J3
-NET "RS232_CTS" LOC= R8 | IOSTANDARD = LVCMOS33; # Jumper J4
-
-# RS232_USB
-NET "RS232_USB_RX" LOC= AA10 | IOSTANDARD = LVCMOS33;
-NET "RS232_USB_TX" LOC= AA19 | IOSTANDARD = LVCMOS33;
-NET "RS232_USB_reset_n" LOC= Y20 | IOSTANDARD = LVCMOS33;
-
-# GPIO LEDs, active low
-NET "GPIO_LED_n<0>" LOC= AF22 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<1>" LOC= AF23 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<2>" LOC= AF25 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<3>" LOC= AE25 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<4>" LOC= AD25 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<5>" LOC= AE26 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<6>" LOC= AD26 | IOSTANDARD = LVCMOS18 | PULLUP;
-NET "GPIO_LED_n<7>" LOC= AC26 | IOSTANDARD = LVCMOS18 | PULLUP;
-
-# GPIO DIP_Switches
-NET "GPIO_DIPswitch<0>" LOC= AD13 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<1>" LOC= AE13 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<2>" LOC= AF13 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<3>" LOC= AD15 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<4>" LOC= AD14 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<5>" LOC= AF14 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<6>" LOC= AE15 | IOSTANDARD = LVCMOS18;
-NET "GPIO_DIPswitch<7>" LOC= AF15 | IOSTANDARD = LVCMOS18;
-
-# Push Buttons
-NET "GPIO_button<0>" LOC= AF20 | IOSTANDARD = LVCMOS18 | PULLUP; #PB1
-NET "GPIO_button<1>" LOC= AE20 | IOSTANDARD = LVCMOS18 | PULLUP; #PB2
-NET "GPIO_button<2>" LOC= AD19 | IOSTANDARD = LVCMOS18 | PULLUP; #PB3
-NET "GPIO_button<3>" LOC= AD20 | IOSTANDARD = LVCMOS18 | PULLUP; #PB4
-
-# FLASH_8Mx16
-NET "FLASH_A<31>" LOC= Y11 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<30>" LOC= H9 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<29>" LOC= G10 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<28>" LOC= H21 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<27>" LOC= G20 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<26>" LOC= H11 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<25>" LOC= G11 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<24>" LOC= H19 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<23>" LOC= H18 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<22>" LOC= G12 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<21>" LOC= F13 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<20>" LOC= G19 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<19>" LOC= F18 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<18>" LOC= F14 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<17>" LOC= F15 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<16>" LOC= F17 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<15>" LOC= G17 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<14>" LOC= G14 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<13>" LOC= H13 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<12>" LOC= G16 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<11>" LOC= G15 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<10>" LOC= Y18 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<9>" LOC= AA18 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<8>" LOC= Y10 | IOSTANDARD = LVCMOS33;
-NET "FLASH_A<7>" LOC= W11 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<0>" LOC= AA15 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<1>" LOC= Y15 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<2>" LOC= W14 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<3>" LOC= Y13 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<4>" LOC= W16 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<5>" LOC= Y16 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<6>" LOC= AA14 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<7>" LOC= AA13 | IOSTANDARD = LVCMOS33;
-NET "FLASH_DQ<8>" LOC= AB12 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<9>" LOC= AC11 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<10>" LOC= AB20 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<11>" LOC= AB21 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<12>" LOC= AB11 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<13>" LOC= AB10 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<14>" LOC= AA20 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_DQ<15>" LOC= Y21 | IOSTANDARD = LVCMOS25; # with level shifter
-NET "FLASH_WEN" LOC= AA17 | IOSTANDARD = LVCMOS33;
-NET "FLASH_OEN<0>" LOC= AA12 | IOSTANDARD = LVCMOS33;
-NET "FLASH_CEN<0>" LOC= Y12 | IOSTANDARD = LVCMOS33;
-NET "FLASH_rp_n" LOC= D13 | IOSTANDARD = LVCMOS33;
-NET "FLASH_byte_n" LOC= Y17 | IOSTANDARD = LVCMOS33;
-NET "FLASH_adv_n" LOC= F19 | IOSTANDARD = LVCMOS33;
-NET "FLASH_clk" LOC= E12 | IOSTANDARD = LVCMOS33;
-NET "FLASH_wait" LOC= D16 | IOSTANDARD = LVCMOS33;
-
-# DDR2_SDRAM_16Mx32
-NET "DDR2_ODT<0>" LOC= AF24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<0>" LOC= U25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<1>" LOC= T25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<2>" LOC= T24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<3>" LOC= T23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<4>" LOC= U24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<5>" LOC= V24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<6>" LOC= Y23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<7>" LOC= W23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<8>" LOC= AA25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<9>" LOC= AB26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<10>" LOC= AB25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<11>" LOC= AB24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_A<12>" LOC= AA23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_BA<0>" LOC= U21 | IOSTANDARD = SSTL18_II;
-NET "DDR2_BA<1>" LOC= V22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_CAS_N" LOC= W24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_CKE" LOC= T22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_CS_N" LOC= AD24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_RAS_N" LOC= Y22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_WE_N" LOC= AA22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DM<0>" LOC= U26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DM<1>" LOC= N24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DM<2>" LOC= M24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DM<3>" LOC= M25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_P<0>" LOC= W26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_P<1>" LOC= L23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_P<2>" LOC= K22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_P<3>" LOC= J21 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_N<0>" LOC= W25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_N<1>" LOC= L22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_N<2>" LOC= K23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQS_N<3>" LOC= K21 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<0>" LOC= R22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<1>" LOC= R23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<2>" LOC= P23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<3>" LOC= P24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<4>" LOC= R25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<5>" LOC= P25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<6>" LOC= R26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<7>" LOC= P26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<8>" LOC= M26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<9>" LOC= N26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<10>" LOC= K25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<11>" LOC= L24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<12>" LOC= K26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<13>" LOC= J26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<14>" LOC= J25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<15>" LOC= N21 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<16>" LOC= M21 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<17>" LOC= J23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<18>" LOC= H23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<19>" LOC= H22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<20>" LOC= G22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<21>" LOC= F22 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<22>" LOC= F23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<23>" LOC= E23 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<24>" LOC= G24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<25>" LOC= F24 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<26>" LOC= G25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<27>" LOC= H26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<28>" LOC= G26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<29>" LOC= F25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<30>" LOC= E25 | IOSTANDARD = SSTL18_II;
-NET "DDR2_DQ<31>" LOC= E26 | IOSTANDARD = SSTL18_II;
-NET "DDR2_CK_p<0>" LOC= V21 | IOSTANDARD = DIFF_SSTL18_II;
-NET "DDR2_CK_p<1>" LOC= N22 | IOSTANDARD = DIFF_SSTL18_II;
-NET "DDR2_CK_n<0>" LOC= W21 | IOSTANDARD = DIFF_SSTL18_II;
-NET "DDR2_CK_n<1>" LOC= M22 | IOSTANDARD = DIFF_SSTL18_II;
-
-# Ethernet MAC
-NET "GMII_txer" LOC= A22 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_clk" LOC= E17 | IOSTANDARD = LVCMOS33 | PERIOD=40000 ps;
-NET "GMII_rx_clk" LOC= E20 | IOSTANDARD = LVCMOS33 | PERIOD=40000 ps;
-NET "GMII_gtc_clk" LOC= A19 | IOSTANDARD = LVCMOS33;
-NET "GMII_crs" LOC= A25 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_dv" LOC= C21 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<0>" LOC= D24 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<1>" LOC= D23 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<2>" LOC= D21 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<3>" LOC= C26 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<4>" LOC= D20 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<5>" LOC= C23 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<6>" LOC= B25 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_data<7>" LOC= C22 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_col" LOC= A24 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_rx_er" LOC= B24 | IOSTANDARD = LVCMOS33 | IOBDELAY=NONE;
-NET "GMII_tx_en" LOC= A23 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<0>" LOC= D19 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<1>" LOC= C19 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<2>" LOC= A20 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<3>" LOC= B20 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<4>" LOC= B19 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<5>" LOC= A15 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<6>" LOC= B22 | IOSTANDARD = LVCMOS33;
-NET "GMII_tx_data<7>" LOC= B21 | IOSTANDARD = LVCMOS33;
-NET "GBE_rst_n" LOC= B26 | IOSTANDARD = LVCMOS33;
-NET "GBE_mdc" LOC= D26 | IOSTANDARD = LVCMOS33;
-NET "GBE_mdio" LOC= D25 | IOSTANDARD = LVCMOS33;
-NET "GBE_int_n" LOC= C24 | IOSTANDARD = LVCMOS33;
-NET "GBE_mclk" LOC= F20 | IOSTANDARD = LVCMOS33;
-
-# SysACE CompactFlash
-NET "SAM_CLK" LOC= F12 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<0>" LOC= Y5 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<1>" LOC= V7 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<2>" LOC= W6 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<3>" LOC= W5 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<4>" LOC= K6 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<5>" LOC= J5 | IOSTANDARD = LVCMOS33;
-NET "SAM_A<6>" LOC= J6 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<0>" LOC= F5 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<1>" LOC= U7 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<2>" LOC= V6 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<3>" LOC= U5 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<4>" LOC= U6 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<5>" LOC= T5 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<6>" LOC= T7 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<7>" LOC= R6 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<8>" LOC= R7 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<9>" LOC= R5 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<10>" LOC= P6 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<11>" LOC= P8 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<12>" LOC= N6 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<13>" LOC= M7 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<14>" LOC= K5 | IOSTANDARD = LVCMOS33;
-NET "SAM_D<15>" LOC= L7 | IOSTANDARD = LVCMOS33;
-NET "SAM_CEN" LOC= G4 | IOSTANDARD = LVCMOS33;
-NET "SAM_OEN" LOC= Y6 | IOSTANDARD = LVCMOS33;
-NET "SAM_WEN" LOC= Y4 | IOSTANDARD = LVCMOS33;
-NET "SAM_MPIRQ" LOC= H4 | IOSTANDARD = LVCMOS33;
-NET "SAM_BRDY" LOC= G5 | IOSTANDARD = LVCMOS33;
-NET "SAM_RESET_n" LOC= H6 | IOSTANDARD = LVCMOS33;
-
-# Expansion Header
-NET "EXP1_SE_IO<0>" LOC= A8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<1>" LOC= A12 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<2>" LOC= B10 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<3>" LOC= A10 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<4>" LOC= B9 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<5>" LOC= A9 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<6>" LOC= A5 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<7>" LOC= B11 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<8>" LOC= B6 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<9>" LOC= A7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<10>" LOC= D8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<11>" LOC= C9 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<12>" LOC= B7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<13>" LOC= A4 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<14>" LOC= B5 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<15>" LOC= C8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<16>" LOC= C7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<17>" LOC= A3 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<18>" LOC= C6 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<19>" LOC= B4 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<20>" LOC= D6 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<21>" LOC= D9 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<22>" LOC= E8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<23>" LOC= D5 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<24>" LOC= F7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<25>" LOC= E7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<26>" LOC= E5 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<27>" LOC= E6 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<28>" LOC= F8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<29>" LOC= H7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<30>" LOC= G7 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<31>" LOC= H8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<32>" LOC= G9 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_IO<33>" LOC= J8 | IOSTANDARD = LVCMOS25;
-NET "EXP1_DIFF_P<0>" LOC= AF9 ;
-NET "EXP1_DIFF_N<0>" LOC= AF10 ;
-NET "EXP1_DIFF_P<1>" LOC= AF12 ;
-NET "EXP1_DIFF_N<1>" LOC= AE12 ;
-NET "EXP1_DIFF_P<2>" LOC= AF7 ;
-NET "EXP1_DIFF_N<2>" LOC= AF8 ;
-NET "EXP1_DIFF_P<3>" LOC= AE11 ;
-NET "EXP1_DIFF_N<3>" LOC= AD11 ;
-NET "EXP1_DIFF_P<4>" LOC= AF4 ;
-NET "EXP1_DIFF_N<4>" LOC= AF3 ;
-NET "EXP1_DIFF_P<5>" LOC= AD10 ;
-NET "EXP1_DIFF_N<5>" LOC= AE10 ;
-NET "EXP1_DIFF_P<6>" LOC= AE8 ;
-NET "EXP1_DIFF_N<6>" LOC= AE7 ;
-NET "EXP1_DIFF_P<7>" LOC= AC8 ;
-NET "EXP1_DIFF_N<7>" LOC= AD8 ;
-NET "EXP1_DIFF_P<8>" LOC= AD9 ;
-NET "EXP1_DIFF_N<8>" LOC= AC9 ;
-NET "EXP1_DIFF_P<9>" LOC= AE6 ;
-NET "EXP1_DIFF_N<9>" LOC= AF5 ;
-NET "EXP1_DIFF_P<10>" LOC= AB6 ;
-NET "EXP1_DIFF_N<10>" LOC= AB7 ;
-NET "EXP1_DIFF_P<11>" LOC= AC6 ;
-NET "EXP1_DIFF_N<11>" LOC= AD5 ;
-NET "EXP1_DIFF_P<12>" LOC= AD6 ;
-NET "EXP1_DIFF_N<12>" LOC= AC7 ;
-NET "EXP1_DIFF_P<13>" LOC= AE5 ;
-NET "EXP1_DIFF_N<13>" LOC= AD4 ;
-NET "EXP1_DIFF_P<14>" LOC= AB9 ;
-NET "EXP1_DIFF_N<14>" LOC= AA9 ;
-NET "EXP1_DIFF_P<15>" LOC= AC12 ;
-NET "EXP1_DIFF_N<15>" LOC= AC13 ;
-NET "EXP1_DIFF_P<16>" LOC= AA7 ;
-NET "EXP1_DIFF_N<16>" LOC= AA8 ;
-NET "EXP1_DIFF_P<17>" LOC= AA5 ;
-NET "EXP1_DIFF_N<17>" LOC= AB5 ;
-NET "EXP1_DIFF_P<18>" LOC= AB19 ;
-NET "EXP1_DIFF_N<18>" LOC= AC19 ;
-NET "EXP1_DIFF_P<19>" LOC= Y7 ;
-NET "EXP1_DIFF_N<19>" LOC= Y8 ;
-NET "EXP1_DIFF_P<20>" LOC= W9 ;
-NET "EXP1_DIFF_N<20>" LOC= W8 ;
-NET "EXP1_DIFF_P<21>" LOC= V8 ;
-NET "EXP1_DIFF_N<21>" LOC= V9 ;
-NET "EXP1_SE_CLK_OUT" LOC= B12 | IOSTANDARD = LVCMOS25;
-NET "EXP1_SE_CLK_IN" LOC= E10 | IOSTANDARD = LVCMOS33;
-NET "EXP1_DIFF_CLK_OUT_P" LOC= AC18 ;
-NET "EXP1_DIFF_CLK_OUT_N" LOC= AB17 ;
-NET "EXP1_DIFF_CLK_IN_P" LOC= AB14 ;
-NET "EXP1_DIFF_CLK_IN_N" LOC= AC14 ;
-#NET "EXP1_RCLK_DIFF_P" LOC= AB6 ;
-#NET "EXP1_RCLK_DIFF_N" LOC= AB7 ;
-
-# CPU Debug Trace
-NET "ATDD<8>" LOC= C16 | IOSTANDARD = LVCMOS33;
-NET "ATDD<9>" LOC= A17 | IOSTANDARD = LVCMOS33;
-NET "ATDD<10>" LOC= B15 | IOSTANDARD = LVCMOS33;
-NET "ATDD<11>" LOC= E15 | IOSTANDARD = LVCMOS33;
-NET "ATDD<12>" LOC= A14 | IOSTANDARD = LVCMOS33;
-NET "ATDD<13>" LOC= D18 | IOSTANDARD = LVCMOS33;
-NET "ATDD<14>" LOC= A13 | IOSTANDARD = LVCMOS33;
-NET "ATDD<15>" LOC= C13 | IOSTANDARD = LVCMOS33;
-NET "ATDD<16>" LOC= D14 | IOSTANDARD = LVCMOS33;
-NET "ATDD<17>" LOC= C17 | IOSTANDARD = LVCMOS33;
-NET "ATDD<18>" LOC= E16 | IOSTANDARD = LVCMOS33;
-NET "ATDD<19>" LOC= C14 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS10" LOC= B16 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS20" LOC= E21 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS1E" LOC= B14 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS2E" LOC= B17 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS3" LOC= C18 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS4" LOC= G21 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS5" LOC= A18 | IOSTANDARD = LVCMOS33;
-NET "TRACE_TS6" LOC= F10 | IOSTANDARD = LVCMOS33;
-NET "TRACE_CLK" LOC= D15 | IOSTANDARD = LVCMOS33;
-NET "CPU_HRESET" LOC= E11 | IOSTANDARD = LVCMOS33;
-NET "CPU_TDO" LOC= K7 | IOSTANDARD = LVCMOS33;
-NET "CPU_TMS" LOC= L5 | IOSTANDARD = LVCMOS33;
-NET "CPU_TDI" LOC= M6 | IOSTANDARD = LVCMOS33;
-NET "CPU_TRST" LOC= N7 | IOSTANDARD = LVCMOS33;
-NET "CPU_TCK" LOC= T8 | IOSTANDARD = LVCMOS33;
-NET "CPU_HALT_n" LOC= W4 | IOSTANDARD = LVCMOS33;
-
-
-# voltage termination
-CONFIG PROHIBIT = AA24;
-CONFIG PROHIBIT = AE23;
-CONFIG PROHIBIT = AF17;
-CONFIG PROHIBIT = V26;
-CONFIG PROHIBIT = E22;
-CONFIG PROHIBIT = L25;
-
-# unused pins
-CONFIG PROHIBIT = F9;
-CONFIG PROHIBIT = D10;
-CONFIG PROHIBIT = C12;
-CONFIG PROHIBIT = C11;
-CONFIG PROHIBIT = D11;
-CONFIG PROHIBIT = AB16;
-CONFIG PROHIBIT = AB22;
-CONFIG PROHIBIT = AC17;
-CONFIG PROHIBIT = AC21;
-CONFIG PROHIBIT = AE22;
-CONFIG PROHIBIT = AD23;
-CONFIG PROHIBIT = AC24;
-CONFIG PROHIBIT = AC23;
-CONFIG PROHIBIT = AC22;
-CONFIG PROHIBIT = AB22;
-CONFIG PROHIBIT = AE21;
-CONFIG PROHIBIT = AD21;
-CONFIG PROHIBIT = AF19;
-CONFIG PROHIBIT = AF18;
-CONFIG PROHIBIT = AE18;
-CONFIG PROHIBIT = AD18;
-CONFIG PROHIBIT = AE17;
-CONFIG PROHIBIT = AE16;
-CONFIG PROHIBIT = AD16;
-CONFIG PROHIBIT = G6;
-CONFIG PROHIBIT = H24;
-CONFIG PROHIBIT = J24;
-CONFIG PROHIBIT = N23;
-CONFIG PROHIBIT = N15;
-CONFIG PROHIBIT = P14;
-CONFIG PROHIBIT = V23;
-CONFIG PROHIBIT = Y26;
-CONFIG PROHIBIT = Y25;
-CONFIG PROHIBIT = P21;
-CONFIG PROHIBIT = R21;
-CONFIG PROHIBIT = U22;
-
-# grounded pins from gigabit transcievers
-CONFIG PROHIBIT = P4;
-CONFIG PROHIBIT = K4;
-CONFIG PROHIBIT = K3;
-CONFIG PROHIBIT = J1;
-CONFIG PROHIBIT = K1;
-CONFIG PROHIBIT = M1;
-CONFIG PROHIBIT = L1;
-CONFIG PROHIBIT = T3;
-CONFIG PROHIBIT = T4;
-CONFIG PROHIBIT = R1;
-CONFIG PROHIBIT = T1;
-CONFIG PROHIBIT = V1;
-CONFIG PROHIBIT = U1;
-CONFIG PROHIBIT = D3;
-CONFIG PROHIBIT = D4;
-CONFIG PROHIBIT = C1;
-CONFIG PROHIBIT = D1;
-CONFIG PROHIBIT = E1;
-CONFIG PROHIBIT = F1;
-CONFIG PROHIBIT = AB3;
-CONFIG PROHIBIT = AB4;
-CONFIG PROHIBIT = AA1;
-CONFIG PROHIBIT = AB1;
-CONFIG PROHIBIT = AC1;
-CONFIG PROHIBIT = AD1;
-CONFIG PROHIBIT = H2;
-CONFIG PROHIBIT = J2;
-CONFIG PROHIBIT = N2;
-CONFIG PROHIBIT = M2;
-CONFIG PROHIBIT = P2;
-CONFIG PROHIBIT = R2;
-CONFIG PROHIBIT = V2;
-CONFIG PROHIBIT = W2;
-CONFIG PROHIBIT = B2;
-CONFIG PROHIBIT = C2;
-CONFIG PROHIBIT = G2;
-CONFIG PROHIBIT = F2;
-CONFIG PROHIBIT = Y2;
-CONFIG PROHIBIT = AA2;
-CONFIG PROHIBIT = AD2;
-CONFIG PROHIBIT = AE2;
-
diff --git a/hw_v5_fx30t_extension/bsp/build.sh b/hw_v5_fx30t_extension/bsp/build.sh
deleted file mode 100644
index 0787fa5..0000000
--- a/hw_v5_fx30t_extension/bsp/build.sh
+++ /dev/null
@@ -1,28 +0,0 @@
-# need project files:
-# top.xst
-# top.prj
-# top.ut
-
-# need Xilinx tools:
-# xst
-# ngdbuild
-# map
-# par
-# trce
-# bitgen
-
-# generate build directory
-mkdir build
-cd build
-mkdir tmp
-
-# start processes
-xst -ifn "../top.xst" -ofn "top.syr"
-ngdbuild -dd _ngo -nt timestamp -uc ../avnet-eval-xc5vfx30t.ucf -p xc5vfx30t-ff665-1 top.ngc top.ngd
-map -p xc5vfx30t-ff665-1 -w -logic_opt off -ol high -t 1 -register_duplication off -global_opt off -mt off -cm area -ir off -pr off -lc off -power off -o top_map.ncd top.ngd top.pcf
-par -w -ol high -mt off top_map.ncd top.ncd top.pcf
-trce -v 3 -s 1 -n 3 -fastpaths -xml top.twx top.ncd -o top.twr top.pcf
-bitgen -f ../top.ut top.ncd
-
-# get bitfile
-cp top.bit ..
diff --git a/hw_v5_fx30t_extension/bsp/top.prj b/hw_v5_fx30t_extension/bsp/top.prj
deleted file mode 100644
index 3975c05..0000000
--- a/hw_v5_fx30t_extension/bsp/top.prj
+++ /dev/null
@@ -1 +0,0 @@
-vhdl work "../top.vhd"
diff --git a/hw_v5_fx30t_extension/bsp/top.ut b/hw_v5_fx30t_extension/bsp/top.ut
deleted file mode 100644
index e0159fb..0000000
--- a/hw_v5_fx30t_extension/bsp/top.ut
+++ /dev/null
@@ -1,39 +0,0 @@
--w
--g DebugBitstream:No
--g Binary:no
--g CRC:Enable
--g ConfigRate:2
--g CclkPin:PullUp
--g M0Pin:PullUp
--g M1Pin:PullUp
--g M2Pin:PullUp
--g ProgPin:PullUp
--g DonePin:PullUp
--g InitPin:Pullup
--g CsPin:Pullup
--g DinPin:Pullup
--g BusyPin:Pullup
--g RdWrPin:Pullup
--g HswapenPin:PullUp
--g TckPin:PullUp
--g TdiPin:PullUp
--g TdoPin:PullUp
--g TmsPin:PullUp
--g UnusedPin:PullDown
--g UserID:0xFFFFFFFF
--g ConfigFallback:Enable
--g SelectMAPAbort:Enable
--g BPI_page_size:1
--g OverTempPowerDown:Disable
--g JTAG_SysMon:Enable
--g DCIUpdateMode:AsRequired
--g StartUpClk:CClk
--g DONE_cycle:4
--g GTS_cycle:5
--g GWE_cycle:6
--g LCK_cycle:NoWait
--g Match_cycle:Auto
--g Security:None
--g DonePipe:No
--g DriveDone:No
--g Encrypt:No
diff --git a/hw_v5_fx30t_extension/bsp/top.vhd b/hw_v5_fx30t_extension/bsp/top.vhd
deleted file mode 100644
index 1964fed..0000000
--- a/hw_v5_fx30t_extension/bsp/top.vhd
+++ /dev/null
@@ -1,189 +0,0 @@
--- top module of
--- Avnet Virtex 5 FX Evaluation Board
-
-library ieee;
-use ieee.std_logic_1164.all;
-
-library unisim;
-use unisim.vcomponents.ibufds;
-
-
-entity top is
- port (
- clk_100MHz : in std_logic; -- 100 MHz clock
- clk_socket : in std_logic; -- user clock
- user_clk_p : in std_logic; -- diff user clock
- user_clk_n : in std_logic; -- diff user clock
- --
- -- RS232
- rs232_rx : in std_logic;
- rs232_tx : out std_logic;
- rs232_rts : in std_logic;
- rs232_cts : out std_logic;
- -- RS232 USB
- rs232_usb_rx : in std_logic;
- rs232_usb_tx : out std_logic;
- rs232_usb_reset_n : out std_logic;
- --
- gpio_led_n : out std_logic_vector(7 downto 0);
- gpio_dipswitch : in std_logic_vector(7 downto 0);
- gpio_button : in std_logic_vector(3 downto 0);
- --
- -- FLASH 8Mx16
- flash_a : out std_logic_vector(31 downto 7);
- flash_dq : inout std_logic_vector(15 downto 0);
- flash_wen : out std_logic;
- flash_oen : out std_logic_vector(0 downto 0);
- flash_cen : out std_logic_vector(0 downto 0);
- flash_rp_n : out std_logic;
- flash_byte_n : out std_logic;
- flash_adv_n : out std_logic;
- flash_clk : out std_logic;
- flash_wait : in std_logic;
- --
- -- DDR2 SDRAM 16Mx32
- ddr2_odt : in std_logic_vector(0 downto 0);
- ddr2_a : out std_logic_vector(12 downto 0);
- ddr2_ba : out std_logic_vector(1 downto 0);
- ddr2_cas_n : out std_logic;
- ddr2_cke : out std_logic;
- ddr2_cs_n : out std_logic;
- ddr2_ras_n : out std_logic;
- ddr2_we_n : out std_logic;
- ddr2_dm : out std_logic_vector(3 downto 0);
- ddr2_dqs_p : inout std_logic_vector(3 downto 0);
- ddr2_dqs_n : inout std_logic_vector(3 downto 0);
- ddr2_dq : inout std_logic_vector(31 downto 0);
- ddr2_ck_p : in std_logic_vector(1 downto 0);
- ddr2_ck_n : in std_logic_vector(1 downto 0);
- --
- -- Ethernet MAC
- gmii_txer : out std_logic;
- gmii_tx_clk : in std_logic; -- 25 MHz
- gmii_rx_clk : in std_logic; -- 25 MHz
- gmii_gtc_clk : out std_logic;
- gmii_crs : in std_logic;
- gmii_dv : in std_logic;
- gmii_rx_data : in std_logic_vector(7 downto 0);
- gmii_col : in std_logic;
- gmii_rx_er : in std_logic;
- gmii_tx_en : out std_logic;
- gmii_tx_data : out std_logic_vector(7 downto 0);
- gbe_rst_n : out std_logic;
- gbe_mdc : out std_logic;
- gbe_mdio : inout std_logic;
- gbe_int_n : inout std_logic;
- gbe_mclk : in std_logic;
- --
- -- SysACE CompactFlash
- sam_clk : in std_logic;
- sam_a : out std_logic_vector(6 downto 0);
- sam_d : inout std_logic_vector(15 downto 0);
- sam_cen : out std_logic;
- sam_oen : out std_logic;
- sam_wen : out std_logic;
- sam_mpirq : in std_logic;
- sam_brdy : in std_logic;
- sam_reset_n : out std_logic;
- --
- -- Expansion Header
- exp1_se_io : inout std_logic_vector(33 downto 0);
- exp1_diff_p : inout std_logic_vector(21 downto 0);
- exp1_diff_n : inout std_logic_vector(21 downto 0);
- exp1_se_clk_out : out std_logic;
- exp1_se_clk_in : in std_logic;
- exp1_diff_clk_out_p : out std_logic;
- exp1_diff_clk_out_n : out std_logic;
- exp1_diff_clk_in_p : in std_logic;
- exp1_diff_clk_in_n : in std_logic;
- --
- -- Debug/Trace
- atdd : inout std_logic_vector(19 downto 8);
- trace_ts10 : inout std_logic;
- trace_ts20 : inout std_logic;
- trace_ts1e : inout std_logic;
- trace_ts2e : inout std_logic;
- trace_ts3 : inout std_logic;
- trace_ts4 : inout std_logic;
- trace_ts5 : inout std_logic;
- trace_ts6 : inout std_logic;
- trace_clk : in std_logic;
- cpu_hreset : in std_logic;
- cpu_tdo : out std_logic;
- cpu_tms : in std_logic;
- cpu_tdi : in std_logic;
- cpu_trst : in std_logic;
- cpu_tck : in std_logic;
- cpu_halt_n : in std_logic
- );
-end entity top;
-
-
-architecture rtl of top is
-
- signal ibufds_i0_o : std_ulogic;
- signal ibufds_i1_o : std_ulogic;
-
-begin
-
- ibufds_i0 : ibufds
- generic map (
- diff_term => true
- )
- port map (
- o => ibufds_i0_o,
- i => ddr2_ck_p(0),
- ib => ddr2_ck_n(0)
- );
-
- ibufds_i1 : ibufds
- generic map (
- diff_term => true
- )
- port map (
- o => ibufds_i1_o,
- i => ddr2_ck_p(1),
- ib => ddr2_ck_n(1)
- );
-
- -- default output drivers
- -- to pass bitgen DRC
- rs232_tx <= '1';
- rs232_cts <= '1';
- rs232_usb_tx <= '1';
- rs232_usb_reset_n <= '1';
- gpio_led_n <= (others => '1');
- flash_cen <= "1";
- flash_oen <= "1";
- flash_wen <= '1';
- flash_rp_n <= '1';
- flash_byte_n <= '1';
- flash_adv_n <= '1';
- flash_clk <= '0';
- flash_a <= (others => '0');
- ddr2_a <= (others => '0');
- ddr2_ba <= (others => '0');
- ddr2_dm <= (others => '0');
- ddr2_cs_n <= '1';
- ddr2_we_n <= '1';
- ddr2_cke <= '1';
- ddr2_cas_n <= '1';
- ddr2_ras_n <= '1';
- gmii_gtc_clk <= '0';
- gmii_tx_data <= (others => '0');
- gmii_tx_en <= '0';
- gmii_txer <= '0';
- gbe_rst_n <= '1';
- gbe_mdc <= '1';
- sam_cen <= '1';
- sam_oen <= '1';
- sam_wen <= '1';
- sam_a <= (others => '0');
- sam_reset_n <= '1';
- exp1_se_clk_out <= '0';
- exp1_diff_clk_out_p <= '0';
- exp1_diff_clk_out_n <= '1';
- cpu_tdo <= '1';
-
-end architecture rtl;
-
diff --git a/hw_v5_fx30t_extension/bsp/top.xst b/hw_v5_fx30t_extension/bsp/top.xst
deleted file mode 100644
index a3b6123..0000000
--- a/hw_v5_fx30t_extension/bsp/top.xst
+++ /dev/null
@@ -1,60 +0,0 @@
-set -tmpdir "tmp"
-set -xsthdpdir "xst"
-run
--ifn ../top.prj
--ifmt mixed
--ofn top
--ofmt NGC
--p xc5vfx30t-1-ff665
--top top
--opt_mode Speed
--opt_level 1
--power NO
--iuc NO
--keep_hierarchy No
--netlist_hierarchy As_Optimized
--rtlview Yes
--glob_opt AllClockNets
--read_cores YES
--write_timing_constraints NO
--cross_clock_analysis NO
--hierarchy_separator /
--bus_delimiter <>
--case Maintain
--slice_utilization_ratio 100
--bram_utilization_ratio 100
--dsp_utilization_ratio 100
--lc Off
--reduce_control_sets Off
--verilog2001 YES
--fsm_extract YES -fsm_encoding Auto
--safe_implementation No
--fsm_style LUT
--ram_extract Yes
--ram_style Auto
--rom_extract Yes
--mux_style Auto
--decoder_extract YES
--priority_extract Yes
--shreg_extract YES
--shift_extract YES
--xor_collapse YES
--rom_style Auto
--auto_bram_packing NO
--mux_extract Yes
--resource_sharing YES
--async_to_sync NO
--use_dsp48 Auto
--iobuf YES
--max_fanout 100000
--bufg 32
--register_duplication YES
--register_balancing No
--slice_packing YES
--optimize_primitives NO
--use_clock_enable Auto
--use_sync_set Auto
--use_sync_reset Auto
--iob Auto
--equivalent_register_removal YES
--slice_utilization_ratio_maxmargin 5
diff --git a/hw_v5_fx30t_extension/future_extension/Audio_codec/see_altium_data_sheet.txt b/hw_v5_fx30t_extension/future_extension/Audio_codec/see_altium_data_sheet.txt
deleted file mode 100644
index e69de29..0000000
--- a/hw_v5_fx30t_extension/future_extension/Audio_codec/see_altium_data_sheet.txt
+++ /dev/null
diff --git a/hw_v5_fx30t_extension/future_extension/NanoBoard 3000XN Schematics (Xilinx variant).pdf b/hw_v5_fx30t_extension/future_extension/NanoBoard 3000XN Schematics (Xilinx variant).pdf
deleted file mode 100644
index eaca66e..0000000
--- a/hw_v5_fx30t_extension/future_extension/NanoBoard 3000XN Schematics (Xilinx variant).pdf
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/future_extension/PS2/pins.txt b/hw_v5_fx30t_extension/future_extension/PS2/pins.txt
deleted file mode 100644
index 24e572f..0000000
--- a/hw_v5_fx30t_extension/future_extension/PS2/pins.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-data 1
-clock 1
-
-sum 2
diff --git a/hw_v5_fx30t_extension/future_extension/PS2/ps2.png b/hw_v5_fx30t_extension/future_extension/PS2/ps2.png
deleted file mode 100644
index 829e696..0000000
--- a/hw_v5_fx30t_extension/future_extension/PS2/ps2.png
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/future_extension/PS2/ps2_connector.png b/hw_v5_fx30t_extension/future_extension/PS2/ps2_connector.png
deleted file mode 100644
index a39c9e2..0000000
--- a/hw_v5_fx30t_extension/future_extension/PS2/ps2_connector.png
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/future_extension/SD_card/pins.txt b/hw_v5_fx30t_extension/future_extension/SD_card/pins.txt
deleted file mode 100644
index 6dd09f7..0000000
--- a/hw_v5_fx30t_extension/future_extension/SD_card/pins.txt
+++ /dev/null
@@ -1,7 +0,0 @@
-protect 1
-detect 1
-cmd 1
-clk 1
-data 4
-
-sum 8
diff --git a/hw_v5_fx30t_extension/future_extension/VGA_out/pins.txt b/hw_v5_fx30t_extension/future_extension/VGA_out/pins.txt
deleted file mode 100644
index cb7f392..0000000
--- a/hw_v5_fx30t_extension/future_extension/VGA_out/pins.txt
+++ /dev/null
@@ -1,8 +0,0 @@
-red 8
-green 8
-blue 8
-hsync 1
-vsync 1
-dac_clk 1
-
-sum 27
diff --git a/hw_v5_fx30t_extension/future_extension/VGA_out/vga_connector.png b/hw_v5_fx30t_extension/future_extension/VGA_out/vga_connector.png
deleted file mode 100644
index fd31718..0000000
--- a/hw_v5_fx30t_extension/future_extension/VGA_out/vga_connector.png
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/future_extension/VGA_out/vga_out.png b/hw_v5_fx30t_extension/future_extension/VGA_out/vga_out.png
deleted file mode 100644
index 2e777e5..0000000
--- a/hw_v5_fx30t_extension/future_extension/VGA_out/vga_out.png
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/future_extension/VGA_out/video_dac.png b/hw_v5_fx30t_extension/future_extension/VGA_out/video_dac.png
deleted file mode 100644
index 9ad137e..0000000
--- a/hw_v5_fx30t_extension/future_extension/VGA_out/video_dac.png
+++ /dev/null
Binary files differ
diff --git a/hw_v5_fx30t_extension/readme.txt b/hw_v5_fx30t_extension/readme.txt
deleted file mode 100644
index ad96102..0000000
--- a/hw_v5_fx30t_extension/readme.txt
+++ /dev/null
@@ -1,18 +0,0 @@
-done:
-ucf und top angelegt
-LED leuchten auf Tastendruck
-Desing läuft aus dem BPI-Flash
-
-todo:
-grlib mit folgender IP:
-RS232
-USB-UART
-GPIO (LED switch button)
-Flash 8Mx16
-DDR2 16Mx32
-Ethernet (10/100/1000)
-Sysace? eher nicht -> 28 Pins extra
-
-Portierung ZPU + grlib (Größe + Geschwindigkeit)
-Portierung LEON3 + grlib (Größe + Geschwindigkeit)
-Portierung PPC + grlib (Größe + Geschwindigkeit)
diff --git a/hw_v5_fx30t_extension/rtl/top.vhd b/hw_v5_fx30t_extension/rtl/top.vhd
deleted file mode 100644
index 34c82b8..0000000
--- a/hw_v5_fx30t_extension/rtl/top.vhd
+++ /dev/null
@@ -1,144 +0,0 @@
-
-library ieee;
-use ieee.std_logic_1164.all;
-
-library unisim;
-use unisim.vcomponents.ibufds;
-
-
-
-entity top is
- port
- (
- sys_clk : in std_logic; -- 100 MHz clock
- clk_socket : in std_logic; -- user clock
- --sys_rst : in std_logic;
- --
- -- RS232
- RS232_RX : in std_logic;
- RS232_TX : out std_logic;
- -- RS232_USB
- RS232_USB_RX : in std_logic;
- RS232_USB_TX : out std_logic;
- RS232_USB_reset_dummy : out std_logic;
- --
- GPIO_LED_out : out std_logic_vector(7 downto 0);
- GPIO_DIPswitch_in : in std_logic_vector(7 downto 0);
- GPIO_button_in : in std_logic_vector(3 downto 0);
- --
- -- FLASH_8Mx16
- FLASH_8Mx16_Mem_A : out std_logic_vector(31 downto 7);
- FLASH_8Mx16_Mem_DQ : inout std_logic_vector(15 downto 0);
- FLASH_8Mx16_Mem_WEN : out std_logic;
- FLASH_8Mx16_Mem_OEN : out std_logic_vector(0 downto 0);
- FLASH_8Mx16_Mem_CEN : out std_logic_vector(0 downto 0);
- FLASH_8Mx16_rpn_dummy : out std_logic;
- --FLASH_8Mx16_byte_dummy : std_logic;
- --FLASH_8Mx16_adv_dummy : std_logic;
- --FLASH_8Mx16_clk_dummy : std_logic;
- --FLASH_8Mx16_wait_dummy : std_logic;
- --
- -- DDR2_SDRAM_16Mx32
- DDR2_SDRAM_16Mx32_DDR2_ODT : in std_logic_vector( 0 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_A : out std_logic_vector(12 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_BA : out std_logic_vector( 1 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_CAS_N : out std_logic;
- DDR2_SDRAM_16Mx32_DDR2_CKE : out std_logic;
- DDR2_SDRAM_16Mx32_DDR2_CS_N : out std_logic;
- DDR2_SDRAM_16Mx32_DDR2_RAS_N : out std_logic;
- DDR2_SDRAM_16Mx32_DDR2_WE_N : out std_logic;
- DDR2_SDRAM_16Mx32_DDR2_DM : out std_logic_vector( 3 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_DQS : inout std_logic_vector( 3 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_DQS_N : inout std_logic_vector( 3 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_DQ : inout std_logic_vector(31 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_CK : in std_logic_vector( 1 downto 0);
- DDR2_SDRAM_16Mx32_DDR2_CK_N : in std_logic_vector( 1 downto 0);
- --
- -- Ethernet_MAC
- Ethernet_MAC_DUMMY_ETH_TXER : out std_logic;
- Ethernet_MAC_PHY_tx_clk : in std_logic; -- 25 MHz
- Ethernet_MAC_PHY_rx_clk : in std_logic; -- 25 MHz
- Ethernet_MAC_PHY_crs : in std_logic;
- Ethernet_MAC_PHY_dv : in std_logic;
- Ethernet_MAC_PHY_rx_data : in std_logic_vector(3 downto 0);
- Ethernet_MAC_PHY_col : in std_logic;
- Ethernet_MAC_PHY_rx_er : in std_logic;
- Ethernet_MAC_PHY_tx_en : out std_logic;
- Ethernet_MAC_PHY_tx_data : out std_logic_vector(3 downto 0);
- Ethernet_MAC_PHY_rst_n : out std_logic;
- Ethernet_MAC_PHY_Mii_clk : out std_logic;
- Ethernet_MAC_PHY_Mii_data : inout std_logic;
- --
- -- SysACE_CompactFlash
- SysACE_CompactFlash_SysACE_CLK : in std_logic;
- SysACE_CompactFlash_SysACE_MPA : out std_logic_vector( 6 downto 0);
- SysACE_CompactFlash_SysACE_MPD : inout std_logic_vector(15 downto 0);
- SysACE_CompactFlash_SysACE_CEN : out std_logic;
- SysACE_CompactFlash_SysACE_OEN : out std_logic;
- SysACE_CompactFlash_SysACE_WEN : out std_logic;
- SysACE_CompactFlash_SysACE_MPIRQ : in std_logic
- );
-end entity top;
-
-
-architecture rtl of top is
-
- signal ibufds_i0_o : std_ulogic;
- signal ibufds_i1_o : std_ulogic;
-
-begin
-
- ibufds_i0 : ibufds
- generic map (
- diff_term => true
- )
- port map (
- o => ibufds_i0_o,
- i => DDR2_SDRAM_16Mx32_DDR2_CK(0),
- ib => DDR2_SDRAM_16Mx32_DDR2_CK_N(0)
- );
-
- ibufds_i1 : ibufds
- generic map (
- diff_term => true
- )
- port map (
- o => ibufds_i1_o,
- i => DDR2_SDRAM_16Mx32_DDR2_CK(1),
- ib => DDR2_SDRAM_16Mx32_DDR2_CK_N(1)
- );
-
- -- some default assignments
- -- to pass bitgen DRC
- RS232_TX <= '1';
- RS232_USB_TX <= '1';
- RS232_USB_reset_dummy <= '0';
- FLASH_8Mx16_Mem_CEN <= "1";
- FLASH_8Mx16_Mem_OEN <= "1";
- FLASH_8Mx16_Mem_WEN <= '1';
- FLASH_8Mx16_rpn_dummy <= '1';
- FLASH_8Mx16_Mem_A <= (others => '0');
- DDR2_SDRAM_16Mx32_DDR2_A <= (others => '0');
- DDR2_SDRAM_16Mx32_DDR2_BA <= (others => '0');
- DDR2_SDRAM_16Mx32_DDR2_DM <= (others => '0');
- DDR2_SDRAM_16Mx32_DDR2_CS_N <= '1';
- DDR2_SDRAM_16Mx32_DDR2_WE_N <= '1';
- DDR2_SDRAM_16Mx32_DDR2_CKE <= '1';
- DDR2_SDRAM_16Mx32_DDR2_CAS_N <= '1';
- DDR2_SDRAM_16Mx32_DDR2_RAS_N <= '1';
- Ethernet_MAC_PHY_rst_n <= '1';
- Ethernet_MAC_PHY_tx_data <= (others => '0');
- Ethernet_MAC_PHY_tx_en <= '0';
- Ethernet_MAC_DUMMY_ETH_TXER <= '0';
- Ethernet_MAC_PHY_Mii_clk <= '1';
- SysACE_CompactFlash_SysACE_CEN <= '1';
- SysACE_CompactFlash_SysACE_OEN <= '1';
- SysACE_CompactFlash_SysACE_WEN <= '1';
- SysACE_CompactFlash_SysACE_MPA <= (others => '0');
-
-
- -- small function:
- GPIO_LED_out <= GPIO_DIPswitch_in when GPIO_button_in(0) = '0' else not GPIO_DIPswitch_in;
-
-end architecture rtl;
-
diff --git a/hw_v5_fx30t_extension/simulation/Makefile b/hw_v5_fx30t_extension/simulation/Makefile
deleted file mode 100644
index e1185a8..0000000
--- a/hw_v5_fx30t_extension/simulation/Makefile
+++ /dev/null
@@ -1,46 +0,0 @@
-#
-# $HeadURL: https://svn.fzd.de/repo/concast/FWF_Projects/FWKE/beam_position_monitor/hardware/board_sp605/simulation/Makefile $
-# $Date$
-# $Author$
-# $Revision$
-#
-
-library = work
-top = top
-
-library_list = $(shell cut --field 1 --delimiter=" " --only-delimited vhdl_files.txt | grep --invert "\#" | sort --unique)
-
-# http://sourceforge.net/projects/vmk/
-VMK = vmk
-
-all: compile simulate
-
-
-compile: Makefile.msim
- export ANAFLAGS="-quiet -2008"; \
- make -f Makefile.msim | ccze -A
-
-
-simulate:
- export top=$(top); \
- vsim -quiet -gui $(library).$(top) -do run.do -nowlfmcl -l transcript.log
-
-
-clean:
- rm -f transcript
- rm -f *.wlf
- rm -f wlf*
- @#
- -make -f Makefile.msim clean
- rm -f Makefile.msim
- rm -f .stamp
- rm -rf $(library_list)
-
-
-# generate Makefile.msim with vmk
-Makefile.msim: vhdl_files.txt $(library_list)
- $(VMK) -t modelsim -O -w $(library) -F vhdl_files.txt
-
-$(library_list):
- vlib $@
-
diff --git a/hw_v5_fx30t_extension/simulation/run.do b/hw_v5_fx30t_extension/simulation/run.do
deleted file mode 100644
index 339fac7..0000000
--- a/hw_v5_fx30t_extension/simulation/run.do
+++ /dev/null
@@ -1,65 +0,0 @@
-
-#
-# helper functions
-#
-
-# restart + run
-proc r {} {
- restart -f
- set sim_start [clock seconds]
-
- run -all
-
- puts "# simulation run time: [clock format [expr [clock seconds] - $sim_start] -gmt 1 -format %H:%M:%S] "
-}
-
-
-# restart with clear
-proc rc {} {
- .main clear
- r
-}
-
-# print varables
-proc my_debug {} {
- global env
- foreach key [array names env] {
- puts "$key=$env($key)"
- }
-}
-
-
-# fast exit
-proc e {} {
- exit -force
-}
-
-# fast exit
-proc x {} {
- exit -force
-}
-
-
-# get env variables
-global env
-quietly set top $env(top)
-
-
-if {[file exists wave.do]} {
- do wave.do
-} else {
- if {[file exists wave_$top.do]} {
- do wave_$top.do
- } else {
- puts "INFO: no wave file (wave_$top.do) found"
- }
- puts "INFO: no wave file (wave.do) found"
-}
-
-
-
-set sim_start [clock seconds]
-
-run -all
-
-puts "# simulation run time: [clock format [expr [clock seconds] - $sim_start] -gmt 1 -format %H:%M:%S] "
diff --git a/hw_v5_fx30t_extension/simulation/vhdl_files.txt b/hw_v5_fx30t_extension/simulation/vhdl_files.txt
deleted file mode 100644
index a994fc5..0000000
--- a/hw_v5_fx30t_extension/simulation/vhdl_files.txt
+++ /dev/null
@@ -1 +0,0 @@
-work ../rtl/top.vhd
diff --git a/ieee_proposed/doc/link.txt b/ieee_proposed/doc/link.txt
deleted file mode 100644
index a34854d..0000000
--- a/ieee_proposed/doc/link.txt
+++ /dev/null
@@ -1 +0,0 @@
-http://www.eda-stds.org/fphdl/
diff --git a/ieee_proposed/rtl/env_c.vhd b/ieee_proposed/rtl/env_c.vhd
deleted file mode 100644
index e6703fa..0000000
--- a/ieee_proposed/rtl/env_c.vhd
+++ /dev/null
@@ -1,48 +0,0 @@
-package ENV is
-
- procedure STOP (STATUS : INTEGER);
- procedure FINISH (STATUS : INTEGER);
-
- function RESOLUTION_LIMIT return DELAY_LENGTH;
-
-end package ENV;
-library ieee_proposed;
-use ieee_proposed.standard_additions.all;
-package body ENV is
-
- procedure STOP (STATUS : INTEGER) is
- begin
- report "Procedure STOP called with status: " & INTEGER'image(STATUS)
- severity failure;
- end procedure STOP;
- procedure FINISH (STATUS : INTEGER) is
- begin
- report "Procedure FINISH called with status: " & INTEGER'image(STATUS)
- severity failure;
- end procedure FINISH;
-
- constant BASE_TIME_ARRAY : time_vector :=
- (
- 1 fs, 10 fs, 100 fs,
- 1 ps, 10 ps, 100 ps,
- 1 ns, 10 ns, 100 ns,
- 1 us, 10 us, 100 us,
- 1 ms, 10 ms, 100 ms,
- 1 sec, 10 sec, 100 sec,
- 1 min, 10 min, 100 min,
- 1 hr, 10 hr, 100 hr
- ) ;
-
- function RESOLUTION_LIMIT return DELAY_LENGTH is
- begin
- for i in BASE_TIME_ARRAY'range loop
- if BASE_TIME_ARRAY(i) > 0 hr then
- return BASE_TIME_ARRAY(i);
- end if;
- end loop;
- report "STANDATD.RESOLUTION_LIMIT: Simulator resolution not less than 100 hr"
- severity failure;
- return 1 ns;
- end function RESOLUTION_LIMIT;
-
-end package body ENV;
diff --git a/ieee_proposed/rtl/fixed_float_types_c.vhd b/ieee_proposed/rtl/fixed_float_types_c.vhd
deleted file mode 100644
index 315b628..0000000
--- a/ieee_proposed/rtl/fixed_float_types_c.vhd
+++ /dev/null
@@ -1,34 +0,0 @@
--- --------------------------------------------------------------------
--- "fixed_float_types" package contains types used in the fixed and floating
--- point packages..
--- Please see the documentation for the floating point package.
--- This package should be compiled into "ieee_proposed" and used as follows:
---
--- This verison is designed to work with the VHDL-93 compilers. Please
--- note the "%%%" comments. These are where we diverge from the
--- VHDL-200X LRM.
---
--- --------------------------------------------------------------------
--- Version : $Revision: 1.21 $
--- Date : $Date: 2007-09-11 14:52:13-04 $
--- --------------------------------------------------------------------
-
-package fixed_float_types is
-
- -- Types used for generics of fixed_generic_pkg
-
- type fixed_round_style_type is (fixed_round, fixed_truncate);
-
- type fixed_overflow_style_type is (fixed_saturate, fixed_wrap);
-
- -- Type used for generics of float_generic_pkg
-
- -- These are the same as the C FE_TONEAREST, FE_UPWARD, FE_DOWNWARD,
- -- and FE_TOWARDZERO floating point rounding macros.
-
- type round_type is (round_nearest, -- Default, nearest LSB '0'
- round_inf, -- Round toward positive infinity
- round_neginf, -- Round toward negative infinity
- round_zero); -- Round toward zero (truncate)
-
-end package fixed_float_types;
diff --git a/ieee_proposed/rtl/fixed_pkg_c.vhd b/ieee_proposed/rtl/fixed_pkg_c.vhd
deleted file mode 100644
index bb32709..0000000
--- a/ieee_proposed/rtl/fixed_pkg_c.vhd
+++ /dev/null
@@ -1,8390 +0,0 @@
--- --------------------------------------------------------------------
--- "fixed_pkg_c.vhdl" package contains functions for fixed point math.
--- Please see the documentation for the fixed point package.
--- This package should be compiled into "ieee_proposed" and used as follows:
--- use ieee.std_logic_1164.all;
--- use ieee.numeric_std.all;
--- use ieee_proposed.fixed_float_types.all;
--- use ieee_proposed.fixed_pkg.all;
---
--- This verison is designed to work with the VHDL-93 compilers
--- synthesis tools. Please note the "%%%" comments. These are where we
--- diverge from the VHDL-200X LRM.
--- --------------------------------------------------------------------
--- Version : $Revision: 1.21 $
--- Date : $Date: 2007/09/26 18:08:53 $
--- --------------------------------------------------------------------
-
-use STD.TEXTIO.all;
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-use IEEE.NUMERIC_STD.all;
-library IEEE_PROPOSED;
-use IEEE_PROPOSED.fixed_float_types.all;
-
-package fixed_pkg is
--- generic (
- -- Rounding routine to use in fixed point, fixed_round or fixed_truncate
- constant fixed_round_style : fixed_round_style_type := fixed_round;
- -- Overflow routine to use in fixed point, fixed_saturate or fixed_wrap
- constant fixed_overflow_style : fixed_overflow_style_type := fixed_saturate;
- -- Extra bits used in divide routines
- constant fixed_guard_bits : NATURAL := 3;
- -- If TRUE, then turn off warnings on "X" propagation
- constant no_warning : BOOLEAN := (false
- );
-
- -- Author David Bishop (dbishop@vhdl.org)
-
- -- base Unsigned fixed point type, downto direction assumed
- type UNRESOLVED_ufixed is array (INTEGER range <>) of STD_ULOGIC;
- -- base Signed fixed point type, downto direction assumed
- type UNRESOLVED_sfixed is array (INTEGER range <>) of STD_ULOGIC;
-
- subtype U_ufixed is UNRESOLVED_ufixed;
- subtype U_sfixed is UNRESOLVED_sfixed;
-
- subtype ufixed is UNRESOLVED_ufixed;
- subtype sfixed is UNRESOLVED_sfixed;
-
- --===========================================================================
- -- Arithmetic Operators:
- --===========================================================================
-
- -- Absolute value, 2's complement
- -- abs sfixed(a downto b) = sfixed(a+1 downto b)
- function "abs" (arg : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Negation, 2's complement
- -- - sfixed(a downto b) = sfixed(a+1 downto b)
- function "-" (arg : UNRESOLVED_sfixed)return UNRESOLVED_sfixed;
-
- -- Addition
- -- ufixed(a downto b) + ufixed(c downto d)
- -- = ufixed(maximum(a,c)+1 downto minimum(b,d))
- function "+" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed(a downto b) + sfixed(c downto d)
- -- = sfixed(maximum(a,c)+1 downto minimum(b,d))
- function "+" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Subtraction
- -- ufixed(a downto b) - ufixed(c downto d)
- -- = ufixed(maximum(a,c)+1 downto minimum(b,d))
- function "-" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed(a downto b) - sfixed(c downto d)
- -- = sfixed(maximum(a,c)+1 downto minimum(b,d))
- function "-" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Multiplication
- -- ufixed(a downto b) * ufixed(c downto d) = ufixed(a+c+1 downto b+d)
- function "*" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed(a downto b) * sfixed(c downto d) = sfixed(a+c+1 downto b+d)
- function "*" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Division
- -- ufixed(a downto b) / ufixed(c downto d) = ufixed(a-d downto b-c-1)
--- function "/" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed(a downto b) / sfixed(c downto d) = sfixed(a-d+1 downto b-c)
--- function "/" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Remainder
- -- ufixed (a downto b) rem ufixed (c downto d)
- -- = ufixed (minimum(a,c) downto minimum(b,d))
--- function "rem" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed (a downto b) rem sfixed (c downto d)
- -- = sfixed (minimum(a,c) downto minimum(b,d))
--- function "rem" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Modulo
- -- ufixed (a downto b) mod ufixed (c downto d)
- -- = ufixed (minimum(a,c) downto minimum(b, d))
--- function "mod" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed (a downto b) mod sfixed (c downto d)
- -- = sfixed (c downto minimum(b, d))
--- function "mod" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- ----------------------------------------------------------------------------
- -- In these routines the "real" or "natural" (integer)
- -- are converted into a fixed point number and then the operation is
- -- performed. It is assumed that the array will be large enough.
- -- If the input is "real" then the real number is converted into a fixed of
- -- the same size as the fixed point input. If the number is an "integer"
- -- then it is converted into fixed with the range (l'high downto 0).
- ----------------------------------------------------------------------------
-
- -- ufixed(a downto b) + ufixed(a downto b) = ufixed(a+1 downto b)
- function "+" (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
-
- -- ufixed(c downto d) + ufixed(c downto d) = ufixed(c+1 downto d)
- function "+" (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto b) + ufixed(a downto 0) = ufixed(a+1 downto minimum(0,b))
- function "+" (l : UNRESOLVED_ufixed; r : NATURAL) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto 0) + ufixed(c downto d) = ufixed(c+1 downto minimum(0,d))
- function "+" (l : NATURAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto b) - ufixed(a downto b) = ufixed(a+1 downto b)
- function "-" (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
-
- -- ufixed(c downto d) - ufixed(c downto d) = ufixed(c+1 downto d)
- function "-" (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto b) - ufixed(a downto 0) = ufixed(a+1 downto minimum(0,b))
- function "-" (l : UNRESOLVED_ufixed; r : NATURAL) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto 0) + ufixed(c downto d) = ufixed(c+1 downto minimum(0,d))
- function "-" (l : NATURAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto b) * ufixed(a downto b) = ufixed(2a+1 downto 2b)
- function "*" (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
-
- -- ufixed(c downto d) * ufixed(c downto d) = ufixed(2c+1 downto 2d)
- function "*" (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed (a downto b) * ufixed (a downto 0) = ufixed (2a+1 downto b)
- function "*" (l : UNRESOLVED_ufixed; r : NATURAL) return UNRESOLVED_ufixed;
-
- -- ufixed (a downto b) * ufixed (a downto 0) = ufixed (2a+1 downto b)
- function "*" (l : NATURAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto b) / ufixed(a downto b) = ufixed(a-b downto b-a-1)
--- function "/" (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
-
--- -- ufixed(a downto b) / ufixed(a downto b) = ufixed(a-b downto b-a-1)
--- function "/" (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed(a downto b) / ufixed(a downto 0) = ufixed(a downto b-a-1)
--- function "/" (l : UNRESOLVED_ufixed; r : NATURAL) return UNRESOLVED_ufixed;
-
- -- ufixed(c downto 0) / ufixed(c downto d) = ufixed(c-d downto -c-1)
--- function "/" (l : NATURAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- ufixed (a downto b) rem ufixed (a downto b) = ufixed (a downto b)
--- function "rem" (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
-
--- -- ufixed (c downto d) rem ufixed (c downto d) = ufixed (c downto d)
--- function "rem" (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
--- -- ufixed (a downto b) rem ufixed (a downto 0) = ufixed (a downto minimum(b,0))
--- function "rem" (l : UNRESOLVED_ufixed; r : NATURAL) return UNRESOLVED_ufixed;
-
--- -- ufixed (c downto 0) rem ufixed (c downto d) = ufixed (c downto minimum(d,0))
--- function "rem" (l : NATURAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
--- -- ufixed (a downto b) mod ufixed (a downto b) = ufixed (a downto b)
--- function "mod" (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
-
--- -- ufixed (c downto d) mod ufixed (c downto d) = ufixed (c downto d)
--- function "mod" (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
--- -- ufixed (a downto b) mod ufixed (a downto 0) = ufixed (a downto minimum(b,0))
--- function "mod" (l : UNRESOLVED_ufixed; r : NATURAL) return UNRESOLVED_ufixed;
-
--- -- ufixed (c downto 0) mod ufixed (c downto d) = ufixed (c downto minimum(d,0))
--- function "mod" (l : NATURAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
-
- -- sfixed(a downto b) + sfixed(a downto b) = sfixed(a+1 downto b)
- function "+" (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto d) + sfixed(c downto d) = sfixed(c+1 downto d)
- function "+" (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) + sfixed(a downto 0) = sfixed(a+1 downto minimum(0,b))
- function "+" (l : UNRESOLVED_sfixed; r : INTEGER) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto 0) + sfixed(c downto d) = sfixed(c+1 downto minimum(0,d))
- function "+" (l : INTEGER; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) - sfixed(a downto b) = sfixed(a+1 downto b)
- function "-" (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto d) - sfixed(c downto d) = sfixed(c+1 downto d)
- function "-" (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) - sfixed(a downto 0) = sfixed(a+1 downto minimum(0,b))
- function "-" (l : UNRESOLVED_sfixed; r : INTEGER) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto 0) - sfixed(c downto d) = sfixed(c+1 downto minimum(0,d))
- function "-" (l : INTEGER; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) * sfixed(a downto b) = sfixed(2a+1 downto 2b)
- function "*" (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto d) * sfixed(c downto d) = sfixed(2c+1 downto 2d)
- function "*" (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) * sfixed(a downto 0) = sfixed(2a+1 downto b)
- function "*" (l : UNRESOLVED_sfixed; r : INTEGER) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto 0) * sfixed(c downto d) = sfixed(2c+1 downto d)
- function "*" (l : INTEGER; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) / sfixed(a downto b) = sfixed(a-b+1 downto b-a)
--- function "/" (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto d) / sfixed(c downto d) = sfixed(c-d+1 downto d-c)
--- function "/" (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed(a downto b) / sfixed(a downto 0) = sfixed(a+1 downto b-a)
--- function "/" (l : UNRESOLVED_sfixed; r : INTEGER) return UNRESOLVED_sfixed;
-
- -- sfixed(c downto 0) / sfixed(c downto d) = sfixed(c-d+1 downto -c)
--- function "/" (l : INTEGER; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- sfixed (a downto b) rem sfixed (a downto b) = sfixed (a downto b)
--- function "rem" (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
-
--- -- sfixed (c downto d) rem sfixed (c downto d) = sfixed (c downto d)
--- function "rem" (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
--- -- sfixed (a downto b) rem sfixed (a downto 0) = sfixed (a downto minimum(b,0))
--- function "rem" (l : UNRESOLVED_sfixed; r : INTEGER) return UNRESOLVED_sfixed;
-
--- -- sfixed (c downto 0) rem sfixed (c downto d) = sfixed (c downto minimum(d,0))
--- function "rem" (l : INTEGER; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
--- -- sfixed (a downto b) mod sfixed (a downto b) = sfixed (a downto b)
--- function "mod" (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
-
--- -- sfixed (c downto d) mod sfixed (c downto d) = sfixed (c downto d)
--- function "mod" (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
--- -- sfixed (a downto b) mod sfixed (a downto 0) = sfixed (a downto minimum(b,0))
--- function "mod" (l : UNRESOLVED_sfixed; r : INTEGER) return UNRESOLVED_sfixed;
-
--- -- sfixed (c downto 0) mod sfixed (c downto d) = sfixed (c downto minimum(d,0))
--- function "mod" (l : INTEGER; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- This version of divide gives the user more control
- -- ufixed(a downto b) / ufixed(c downto d) = ufixed(a-d downto b-c-1)
--- function divide (
--- l, r : UNRESOLVED_ufixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed;
-
- -- This version of divide gives the user more control
- -- sfixed(a downto b) / sfixed(c downto d) = sfixed(a-d+1 downto b-c)
--- function divide (
--- l, r : UNRESOLVED_sfixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed;
-
- -- These functions return 1/X
- -- 1 / ufixed(a downto b) = ufixed(-b downto -a-1)
--- function reciprocal (
--- arg : UNRESOLVED_ufixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed;
-
- -- 1 / sfixed(a downto b) = sfixed(-b+1 downto -a)
--- function reciprocal (
--- arg : UNRESOLVED_sfixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed;
-
- -- REM function
- -- ufixed (a downto b) rem ufixed (c downto d)
- -- = ufixed (minimum(a,c) downto minimum(b,d))
--- function remainder (
--- l, r : UNRESOLVED_ufixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed;
-
- -- sfixed (a downto b) rem sfixed (c downto d)
- -- = sfixed (minimum(a,c) downto minimum(b,d))
--- function remainder (
--- l, r : UNRESOLVED_sfixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed;
-
- -- mod function
- -- ufixed (a downto b) mod ufixed (c downto d)
- -- = ufixed (minimum(a,c) downto minimum(b, d))
--- function modulo (
--- l, r : UNRESOLVED_ufixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed;
-
- -- sfixed (a downto b) mod sfixed (c downto d)
- -- = sfixed (c downto minimum(b, d))
--- function modulo (
--- l, r : UNRESOLVED_sfixed;
--- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed;
-
- -- Procedure for those who need an "accumulator" function.
- -- add_carry (ufixed(a downto b), ufixed (c downto d))
- -- = ufixed (maximum(a,c) downto minimum(b,d))
- procedure add_carry (
- L, R : in UNRESOLVED_ufixed;
- c_in : in STD_ULOGIC;
- result : out UNRESOLVED_ufixed;
- c_out : out STD_ULOGIC);
-
- -- add_carry (sfixed(a downto b), sfixed (c downto d))
- -- = sfixed (maximum(a,c) downto minimum(b,d))
- procedure add_carry (
- L, R : in UNRESOLVED_sfixed;
- c_in : in STD_ULOGIC;
- result : out UNRESOLVED_sfixed;
- c_out : out STD_ULOGIC);
-
- -- Scales the result by a power of 2. Width of input = width of output with
- -- the binary point moved.
- function scalb (y : UNRESOLVED_ufixed; N : INTEGER) return UNRESOLVED_ufixed;
- function scalb (y : UNRESOLVED_ufixed; N : SIGNED) return UNRESOLVED_ufixed;
- function scalb (y : UNRESOLVED_sfixed; N : INTEGER) return UNRESOLVED_sfixed;
- function scalb (y : UNRESOLVED_sfixed; N : SIGNED) return UNRESOLVED_sfixed;
-
- function Is_Negative (arg : UNRESOLVED_sfixed) return BOOLEAN;
-
- --===========================================================================
- -- Comparison Operators
- --===========================================================================
-
- function ">" (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function ">" (l, r : UNRESOLVED_sfixed) return BOOLEAN;
- function "<" (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function "<" (l, r : UNRESOLVED_sfixed) return BOOLEAN;
- function "<=" (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function "<=" (l, r : UNRESOLVED_sfixed) return BOOLEAN;
- function ">=" (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function ">=" (l, r : UNRESOLVED_sfixed) return BOOLEAN;
- function "=" (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function "=" (l, r : UNRESOLVED_sfixed) return BOOLEAN;
- function "/=" (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function "/=" (l, r : UNRESOLVED_sfixed) return BOOLEAN;
-
- function \?=\ (l, r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?/=\ (l, r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?>\ (l, r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?>=\ (l, r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?<\ (l, r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?<=\ (l, r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?=\ (l, r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?/=\ (l, r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?>\ (l, r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?>=\ (l, r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?<\ (l, r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?<=\ (l, r : UNRESOLVED_sfixed) return STD_ULOGIC;
-
- function std_match (l, r : UNRESOLVED_ufixed) return BOOLEAN;
- function std_match (l, r : UNRESOLVED_sfixed) return BOOLEAN;
-
- -- Overloads the default "maximum" and "minimum" function
-
- function maximum (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function minimum (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function maximum (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function minimum (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- ----------------------------------------------------------------------------
- -- In these compare functions a natural is converted into a
- -- fixed point number of the bounds "maximum(l'high,0) downto 0"
- ----------------------------------------------------------------------------
-
- function "=" (l : UNRESOLVED_ufixed; r : NATURAL) return BOOLEAN;
- function "/=" (l : UNRESOLVED_ufixed; r : NATURAL) return BOOLEAN;
- function ">=" (l : UNRESOLVED_ufixed; r : NATURAL) return BOOLEAN;
- function "<=" (l : UNRESOLVED_ufixed; r : NATURAL) return BOOLEAN;
- function ">" (l : UNRESOLVED_ufixed; r : NATURAL) return BOOLEAN;
- function "<" (l : UNRESOLVED_ufixed; r : NATURAL) return BOOLEAN;
-
- function "=" (l : NATURAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function "/=" (l : NATURAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function ">=" (l : NATURAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function "<=" (l : NATURAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function ">" (l : NATURAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function "<" (l : NATURAL; r : UNRESOLVED_ufixed) return BOOLEAN;
-
- function \?=\ (l : UNRESOLVED_ufixed; r : NATURAL) return STD_ULOGIC;
- function \?/=\ (l : UNRESOLVED_ufixed; r : NATURAL) return STD_ULOGIC;
- function \?>=\ (l : UNRESOLVED_ufixed; r : NATURAL) return STD_ULOGIC;
- function \?<=\ (l : UNRESOLVED_ufixed; r : NATURAL) return STD_ULOGIC;
- function \?>\ (l : UNRESOLVED_ufixed; r : NATURAL) return STD_ULOGIC;
- function \?<\ (l : UNRESOLVED_ufixed; r : NATURAL) return STD_ULOGIC;
-
- function \?=\ (l : NATURAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?/=\ (l : NATURAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?>=\ (l : NATURAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?<=\ (l : NATURAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?>\ (l : NATURAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?<\ (l : NATURAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
-
- function maximum (l : UNRESOLVED_ufixed; r : NATURAL)
- return UNRESOLVED_ufixed;
- function minimum (l : UNRESOLVED_ufixed; r : NATURAL)
- return UNRESOLVED_ufixed;
- function maximum (l : NATURAL; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function minimum (l : NATURAL; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- ----------------------------------------------------------------------------
- -- In these compare functions a real is converted into a
- -- fixed point number of the bounds "l'high+1 downto l'low"
- ----------------------------------------------------------------------------
-
- function "=" (l : UNRESOLVED_ufixed; r : REAL) return BOOLEAN;
- function "/=" (l : UNRESOLVED_ufixed; r : REAL) return BOOLEAN;
- function ">=" (l : UNRESOLVED_ufixed; r : REAL) return BOOLEAN;
- function "<=" (l : UNRESOLVED_ufixed; r : REAL) return BOOLEAN;
- function ">" (l : UNRESOLVED_ufixed; r : REAL) return BOOLEAN;
- function "<" (l : UNRESOLVED_ufixed; r : REAL) return BOOLEAN;
-
- function "=" (l : REAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function "/=" (l : REAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function ">=" (l : REAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function "<=" (l : REAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function ">" (l : REAL; r : UNRESOLVED_ufixed) return BOOLEAN;
- function "<" (l : REAL; r : UNRESOLVED_ufixed) return BOOLEAN;
-
- function \?=\ (l : UNRESOLVED_ufixed; r : REAL) return STD_ULOGIC;
- function \?/=\ (l : UNRESOLVED_ufixed; r : REAL) return STD_ULOGIC;
- function \?>=\ (l : UNRESOLVED_ufixed; r : REAL) return STD_ULOGIC;
- function \?<=\ (l : UNRESOLVED_ufixed; r : REAL) return STD_ULOGIC;
- function \?>\ (l : UNRESOLVED_ufixed; r : REAL) return STD_ULOGIC;
- function \?<\ (l : UNRESOLVED_ufixed; r : REAL) return STD_ULOGIC;
-
- function \?=\ (l : REAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?/=\ (l : REAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?>=\ (l : REAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?<=\ (l : REAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?>\ (l : REAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
- function \?<\ (l : REAL; r : UNRESOLVED_ufixed) return STD_ULOGIC;
-
- function maximum (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
- function maximum (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function minimum (l : UNRESOLVED_ufixed; r : REAL) return UNRESOLVED_ufixed;
- function minimum (l : REAL; r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- ----------------------------------------------------------------------------
- -- In these compare functions an integer is converted into a
- -- fixed point number of the bounds "maximum(l'high,1) downto 0"
- ----------------------------------------------------------------------------
-
- function "=" (l : UNRESOLVED_sfixed; r : INTEGER) return BOOLEAN;
- function "/=" (l : UNRESOLVED_sfixed; r : INTEGER) return BOOLEAN;
- function ">=" (l : UNRESOLVED_sfixed; r : INTEGER) return BOOLEAN;
- function "<=" (l : UNRESOLVED_sfixed; r : INTEGER) return BOOLEAN;
- function ">" (l : UNRESOLVED_sfixed; r : INTEGER) return BOOLEAN;
- function "<" (l : UNRESOLVED_sfixed; r : INTEGER) return BOOLEAN;
-
- function "=" (l : INTEGER; r : UNRESOLVED_sfixed) return BOOLEAN;
- function "/=" (l : INTEGER; r : UNRESOLVED_sfixed) return BOOLEAN;
- function ">=" (l : INTEGER; r : UNRESOLVED_sfixed) return BOOLEAN;
- function "<=" (l : INTEGER; r : UNRESOLVED_sfixed) return BOOLEAN;
- function ">" (l : INTEGER; r : UNRESOLVED_sfixed) return BOOLEAN;
- function "<" (l : INTEGER; r : UNRESOLVED_sfixed) return BOOLEAN;
-
- function \?=\ (l : UNRESOLVED_sfixed; r : INTEGER) return STD_ULOGIC;
- function \?/=\ (l : UNRESOLVED_sfixed; r : INTEGER) return STD_ULOGIC;
- function \?>=\ (l : UNRESOLVED_sfixed; r : INTEGER) return STD_ULOGIC;
- function \?<=\ (l : UNRESOLVED_sfixed; r : INTEGER) return STD_ULOGIC;
- function \?>\ (l : UNRESOLVED_sfixed; r : INTEGER) return STD_ULOGIC;
- function \?<\ (l : UNRESOLVED_sfixed; r : INTEGER) return STD_ULOGIC;
-
- function \?=\ (l : INTEGER; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?/=\ (l : INTEGER; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?>=\ (l : INTEGER; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?<=\ (l : INTEGER; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?>\ (l : INTEGER; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?<\ (l : INTEGER; r : UNRESOLVED_sfixed) return STD_ULOGIC;
-
- function maximum (l : UNRESOLVED_sfixed; r : INTEGER)
- return UNRESOLVED_sfixed;
- function maximum (l : INTEGER; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function minimum (l : UNRESOLVED_sfixed; r : INTEGER)
- return UNRESOLVED_sfixed;
- function minimum (l : INTEGER; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- ----------------------------------------------------------------------------
- -- In these compare functions a real is converted into a
- -- fixed point number of the bounds "l'high+1 downto l'low"
- ----------------------------------------------------------------------------
-
- function "=" (l : UNRESOLVED_sfixed; r : REAL) return BOOLEAN;
- function "/=" (l : UNRESOLVED_sfixed; r : REAL) return BOOLEAN;
- function ">=" (l : UNRESOLVED_sfixed; r : REAL) return BOOLEAN;
- function "<=" (l : UNRESOLVED_sfixed; r : REAL) return BOOLEAN;
- function ">" (l : UNRESOLVED_sfixed; r : REAL) return BOOLEAN;
- function "<" (l : UNRESOLVED_sfixed; r : REAL) return BOOLEAN;
-
- function "=" (l : REAL; r : UNRESOLVED_sfixed) return BOOLEAN;
- function "/=" (l : REAL; r : UNRESOLVED_sfixed) return BOOLEAN;
- function ">=" (l : REAL; r : UNRESOLVED_sfixed) return BOOLEAN;
- function "<=" (l : REAL; r : UNRESOLVED_sfixed) return BOOLEAN;
- function ">" (l : REAL; r : UNRESOLVED_sfixed) return BOOLEAN;
- function "<" (l : REAL; r : UNRESOLVED_sfixed) return BOOLEAN;
-
- function \?=\ (l : UNRESOLVED_sfixed; r : REAL) return STD_ULOGIC;
- function \?/=\ (l : UNRESOLVED_sfixed; r : REAL) return STD_ULOGIC;
- function \?>=\ (l : UNRESOLVED_sfixed; r : REAL) return STD_ULOGIC;
- function \?<=\ (l : UNRESOLVED_sfixed; r : REAL) return STD_ULOGIC;
- function \?>\ (l : UNRESOLVED_sfixed; r : REAL) return STD_ULOGIC;
- function \?<\ (l : UNRESOLVED_sfixed; r : REAL) return STD_ULOGIC;
-
- function \?=\ (l : REAL; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?/=\ (l : REAL; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?>=\ (l : REAL; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?<=\ (l : REAL; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?>\ (l : REAL; r : UNRESOLVED_sfixed) return STD_ULOGIC;
- function \?<\ (l : REAL; r : UNRESOLVED_sfixed) return STD_ULOGIC;
-
- function maximum (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
- function maximum (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function minimum (l : UNRESOLVED_sfixed; r : REAL) return UNRESOLVED_sfixed;
- function minimum (l : REAL; r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- --===========================================================================
- -- Shift and Rotate Functions.
- -- Note that sra and sla are not the same as the BIT_VECTOR version
- --===========================================================================
-
- function "sll" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed;
- function "srl" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed;
- function "rol" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed;
- function "ror" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed;
- function "sla" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed;
- function "sra" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed;
- function "sll" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed;
- function "srl" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed;
- function "rol" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed;
- function "ror" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed;
- function "sla" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed;
- function "sra" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed;
- function SHIFT_LEFT (ARG : UNRESOLVED_ufixed; COUNT : NATURAL)
- return UNRESOLVED_ufixed;
- function SHIFT_RIGHT (ARG : UNRESOLVED_ufixed; COUNT : NATURAL)
- return UNRESOLVED_ufixed;
- function SHIFT_LEFT (ARG : UNRESOLVED_sfixed; COUNT : NATURAL)
- return UNRESOLVED_sfixed;
- function SHIFT_RIGHT (ARG : UNRESOLVED_sfixed; COUNT : NATURAL)
- return UNRESOLVED_sfixed;
-
- ----------------------------------------------------------------------------
- -- logical functions
- ----------------------------------------------------------------------------
-
- function "not" (l : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "and" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "or" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "nand" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "nor" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "xor" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "xnor" (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function "not" (l : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function "and" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function "or" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function "nand" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function "nor" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function "xor" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function "xnor" (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- Vector and std_ulogic functions, same as functions in numeric_std
- function "and" (l : STD_ULOGIC; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function "and" (l : UNRESOLVED_ufixed; r : STD_ULOGIC)
- return UNRESOLVED_ufixed;
- function "or" (l : STD_ULOGIC; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function "or" (l : UNRESOLVED_ufixed; r : STD_ULOGIC)
- return UNRESOLVED_ufixed;
- function "nand" (l : STD_ULOGIC; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function "nand" (l : UNRESOLVED_ufixed; r : STD_ULOGIC)
- return UNRESOLVED_ufixed;
- function "nor" (l : STD_ULOGIC; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function "nor" (l : UNRESOLVED_ufixed; r : STD_ULOGIC)
- return UNRESOLVED_ufixed;
- function "xor" (l : STD_ULOGIC; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function "xor" (l : UNRESOLVED_ufixed; r : STD_ULOGIC)
- return UNRESOLVED_ufixed;
- function "xnor" (l : STD_ULOGIC; r : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- function "xnor" (l : UNRESOLVED_ufixed; r : STD_ULOGIC)
- return UNRESOLVED_ufixed;
- function "and" (l : STD_ULOGIC; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function "and" (l : UNRESOLVED_sfixed; r : STD_ULOGIC)
- return UNRESOLVED_sfixed;
- function "or" (l : STD_ULOGIC; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function "or" (l : UNRESOLVED_sfixed; r : STD_ULOGIC)
- return UNRESOLVED_sfixed;
- function "nand" (l : STD_ULOGIC; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function "nand" (l : UNRESOLVED_sfixed; r : STD_ULOGIC)
- return UNRESOLVED_sfixed;
- function "nor" (l : STD_ULOGIC; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function "nor" (l : UNRESOLVED_sfixed; r : STD_ULOGIC)
- return UNRESOLVED_sfixed;
- function "xor" (l : STD_ULOGIC; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function "xor" (l : UNRESOLVED_sfixed; r : STD_ULOGIC)
- return UNRESOLVED_sfixed;
- function "xnor" (l : STD_ULOGIC; r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- function "xnor" (l : UNRESOLVED_sfixed; r : STD_ULOGIC)
- return UNRESOLVED_sfixed;
-
- -- Reduction operators, same as numeric_std functions
- function and_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC;
- function nand_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC;
- function or_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC;
- function nor_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC;
- function xor_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC;
- function xnor_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC;
- function and_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC;
- function nand_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC;
- function or_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC;
- function nor_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC;
- function xor_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC;
- function xnor_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC;
-
- -- returns arg'low-1 if not found
- function find_leftmost (arg : UNRESOLVED_ufixed; y : STD_ULOGIC)
- return INTEGER;
- function find_leftmost (arg : UNRESOLVED_sfixed; y : STD_ULOGIC)
- return INTEGER;
-
- -- returns arg'high+1 if not found
- function find_rightmost (arg : UNRESOLVED_ufixed; y : STD_ULOGIC)
- return INTEGER;
- function find_rightmost (arg : UNRESOLVED_sfixed; y : STD_ULOGIC)
- return INTEGER;
-
- --===========================================================================
- -- RESIZE Functions
- --===========================================================================
- -- resizes the number (larger or smaller)
- -- The returned result will be ufixed (left_index downto right_index)
- -- If "round_style" is fixed_round, then the result will be rounded.
- -- If the MSB of the remainder is a "1" AND the LSB of the unrounded result
- -- is a '1' or the lower bits of the remainder include a '1' then the result
- -- will be increased by the smallest representable number for that type.
- -- "overflow_style" can be fixed_saturate or fixed_wrap.
- -- In saturate mode, if the number overflows then the largest possible
- -- representable number is returned. If wrap mode, then the upper bits
- -- of the number are truncated.
-
- function resize (
- arg : UNRESOLVED_ufixed; -- input
- constant left_index : INTEGER; -- integer portion
- constant right_index : INTEGER; -- size of fraction
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed;
-
- -- "size_res" functions create the size of the output from the indices
- -- of the "size_res" input. The actual value of "size_res" is not used.
- function resize (
- arg : UNRESOLVED_ufixed; -- input
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed;
-
- -- Note that in "wrap" mode the sign bit is not replicated. Thus the
- -- resize of a negative number can have a positive result in wrap mode.
- function resize (
- arg : UNRESOLVED_sfixed; -- input
- constant left_index : INTEGER; -- integer portion
- constant right_index : INTEGER; -- size of fraction
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed;
-
- function resize (
- arg : UNRESOLVED_sfixed; -- input
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed;
-
- --===========================================================================
- -- Conversion Functions
- --===========================================================================
-
- -- integer (natural) to unsigned fixed point.
- -- arguments are the upper and lower bounds of the number, thus
- -- ufixed (7 downto -3) <= to_ufixed (int, 7, -3);
- function to_ufixed (
- arg : NATURAL; -- integer
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed;
-
- function to_ufixed (
- arg : NATURAL; -- integer
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed;
-
- -- real to unsigned fixed point
- function to_ufixed (
- arg : REAL; -- real
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits)
- return UNRESOLVED_ufixed;
-
- function to_ufixed (
- arg : REAL; -- real
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits)
- return UNRESOLVED_ufixed;
-
- -- unsigned to unsigned fixed point
- function to_ufixed (
- arg : UNSIGNED; -- unsigned
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed;
-
- function to_ufixed (
- arg : UNSIGNED; -- unsigned
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed;
-
- -- Performs a conversion. ufixed (arg'range) is returned
- function to_ufixed (
- arg : UNSIGNED) -- unsigned
- return UNRESOLVED_ufixed;
-
- -- unsigned fixed point to unsigned
- function to_unsigned (
- arg : UNRESOLVED_ufixed; -- fixed point input
- constant size : NATURAL; -- length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNSIGNED;
-
- -- unsigned fixed point to unsigned
- function to_unsigned (
- arg : UNRESOLVED_ufixed; -- fixed point input
- size_res : UNSIGNED; -- used for length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNSIGNED;
-
- -- unsigned fixed point to real
- function to_real (
- arg : UNRESOLVED_ufixed) -- fixed point input
- return REAL;
-
- -- unsigned fixed point to integer
- function to_integer (
- arg : UNRESOLVED_ufixed; -- fixed point input
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return NATURAL;
-
- -- Integer to UNRESOLVED_sfixed
- function to_sfixed (
- arg : INTEGER; -- integer
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed;
-
- function to_sfixed (
- arg : INTEGER; -- integer
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed;
-
- -- Real to sfixed
- function to_sfixed (
- arg : REAL; -- real
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits)
- return UNRESOLVED_sfixed;
-
- function to_sfixed (
- arg : REAL; -- real
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits)
- return UNRESOLVED_sfixed;
-
- -- signed to sfixed
- function to_sfixed (
- arg : SIGNED; -- signed
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed;
-
- function to_sfixed (
- arg : SIGNED; -- signed
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed;
-
- -- signed to sfixed (output assumed to be size of signed input)
- function to_sfixed (
- arg : SIGNED) -- signed
- return UNRESOLVED_sfixed;
-
- -- Conversion from ufixed to sfixed
- function to_sfixed (
- arg : UNRESOLVED_ufixed)
- return UNRESOLVED_sfixed;
-
- -- signed fixed point to signed
- function to_signed (
- arg : UNRESOLVED_sfixed; -- fixed point input
- constant size : NATURAL; -- length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return SIGNED;
-
- -- signed fixed point to signed
- function to_signed (
- arg : UNRESOLVED_sfixed; -- fixed point input
- size_res : SIGNED; -- used for length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return SIGNED;
-
- -- signed fixed point to real
- function to_real (
- arg : UNRESOLVED_sfixed) -- fixed point input
- return REAL;
-
- -- signed fixed point to integer
- function to_integer (
- arg : UNRESOLVED_sfixed; -- fixed point input
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return INTEGER;
-
- -- Because of the fairly complicated sizing rules in the fixed point
- -- packages these functions are provided to compute the result ranges
- -- Example:
- -- signal uf1 : ufixed (3 downto -3);
- -- signal uf2 : ufixed (4 downto -2);
- -- signal uf1multuf2 : ufixed (ufixed_high (3, -3, '*', 4, -2) downto
- -- ufixed_low (3, -3, '*', 4, -2));
- -- uf1multuf2 <= uf1 * uf2;
- -- Valid characters: '+', '-', '*', '/', 'r' or 'R' (rem), 'm' or 'M' (mod),
- -- '1' (reciprocal), 'a' or 'A' (abs), 'n' or 'N' (unary -)
- function ufixed_high (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER;
-
- function ufixed_low (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER;
-
- function sfixed_high (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER;
-
- function sfixed_low (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER;
-
- -- Same as above, but using the "size_res" input only for their ranges:
- -- signal uf1multuf2 : ufixed (ufixed_high (uf1, '*', uf2) downto
- -- ufixed_low (uf1, '*', uf2));
- -- uf1multuf2 <= uf1 * uf2;
- --
- function ufixed_high (size_res : UNRESOLVED_ufixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_ufixed)
- return INTEGER;
-
- function ufixed_low (size_res : UNRESOLVED_ufixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_ufixed)
- return INTEGER;
-
- function sfixed_high (size_res : UNRESOLVED_sfixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_sfixed)
- return INTEGER;
-
- function sfixed_low (size_res : UNRESOLVED_sfixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_sfixed)
- return INTEGER;
-
- -- purpose: returns a saturated number
- function saturate (
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed;
-
- -- purpose: returns a saturated number
- function saturate (
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed;
-
- function saturate (
- size_res : UNRESOLVED_ufixed) -- only the size of this is used
- return UNRESOLVED_ufixed;
-
- function saturate (
- size_res : UNRESOLVED_sfixed) -- only the size of this is used
- return UNRESOLVED_sfixed;
-
- --===========================================================================
- -- Translation Functions
- --===========================================================================
-
- -- maps meta-logical values
- function to_01 (
- s : UNRESOLVED_ufixed; -- fixed point input
- constant XMAP : STD_ULOGIC := '0') -- Map x to
- return UNRESOLVED_ufixed;
-
- -- maps meta-logical values
- function to_01 (
- s : UNRESOLVED_sfixed; -- fixed point input
- constant XMAP : STD_ULOGIC := '0') -- Map x to
- return UNRESOLVED_sfixed;
-
- function Is_X (arg : UNRESOLVED_ufixed) return BOOLEAN;
- function Is_X (arg : UNRESOLVED_sfixed) return BOOLEAN;
- function to_X01 (arg : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function to_X01 (arg : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function to_X01Z (arg : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function to_X01Z (arg : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
- function to_UX01 (arg : UNRESOLVED_ufixed) return UNRESOLVED_ufixed;
- function to_UX01 (arg : UNRESOLVED_sfixed) return UNRESOLVED_sfixed;
-
- -- straight vector conversion routines, needed for synthesis.
- -- These functions are here so that a std_logic_vector can be
- -- converted to and from sfixed and ufixed. Note that you can
- -- not convert these vectors because of their negative index.
-
- function to_slv (
- arg : UNRESOLVED_ufixed) -- fixed point vector
- return STD_LOGIC_VECTOR;
--- alias to_StdLogicVector is to_slv [UNRESOLVED_ufixed
--- return STD_LOGIC_VECTOR];
--- alias to_Std_Logic_Vector is to_slv [UNRESOLVED_ufixed
--- return STD_LOGIC_VECTOR];
-
- function to_slv (
- arg : UNRESOLVED_sfixed) -- fixed point vector
- return STD_LOGIC_VECTOR;
--- alias to_StdLogicVector is to_slv [UNRESOLVED_sfixed
--- return STD_LOGIC_VECTOR];
--- alias to_Std_Logic_Vector is to_slv [UNRESOLVED_sfixed
--- return STD_LOGIC_VECTOR];
-
- function to_sulv (
- arg : UNRESOLVED_ufixed) -- fixed point vector
- return STD_ULOGIC_VECTOR;
--- alias to_StdULogicVector is to_sulv [UNRESOLVED_ufixed
--- return STD_ULOGIC_VECTOR];
--- alias to_Std_ULogic_Vector is to_sulv [UNRESOLVED_ufixed
--- return STD_ULOGIC_VECTOR];
-
- function to_sulv (
- arg : UNRESOLVED_sfixed) -- fixed point vector
- return STD_ULOGIC_VECTOR;
--- alias to_StdULogicVector is to_sulv [UNRESOLVED_sfixed
--- return STD_ULOGIC_VECTOR];
--- alias to_Std_ULogic_Vector is to_sulv [UNRESOLVED_sfixed
--- return STD_ULOGIC_VECTOR];
-
- function to_ufixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed;
-
- function to_ufixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_ufixed) -- for size only
- return UNRESOLVED_ufixed;
-
- function to_sfixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed;
-
- function to_sfixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_sfixed) -- for size only
- return UNRESOLVED_sfixed;
-
- -- As a concession to those who use a graphical DSP environment,
- -- these functions take parameters in those tools format and create
- -- fixed point numbers. These functions are designed to convert from
- -- a std_logic_vector to the VHDL fixed point format using the conventions
- -- of these packages. In a pure VHDL environment you should use the
- -- "to_ufixed" and "to_sfixed" routines.
-
- -- unsigned fixed point
- function to_UFix (
- arg : STD_ULOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_ufixed;
-
- -- signed fixed point
- function to_SFix (
- arg : STD_ULOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_sfixed;
-
- -- finding the bounds of a number. These functions can be used like this:
- -- signal xxx : ufixed (7 downto -3);
- -- -- Which is the same as "ufixed (UFix_high (11,3) downto UFix_low(11,3))"
- -- signal yyy : ufixed (UFix_high (11, 3, "+", 11, 3)
- -- downto UFix_low(11, 3, "+", 11, 3));
- -- Where "11" is the width of xxx (xxx'length),
- -- and 3 is the lower bound (abs (xxx'low))
- -- In a pure VHDL environment use "ufixed_high" and "ufixed_low"
-
- function UFix_high (width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER;
-
- function UFix_low (width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER;
-
- -- Same as above but for signed fixed point. Note that the width
- -- of a signed fixed point number ignores the sign bit, thus
- -- width = sxxx'length-1
-
- function SFix_high (width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER;
-
- function SFix_low (width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER;
--- rtl_synthesis off
--- pragma synthesis_off
- --===========================================================================
- -- string and textio Functions
- --===========================================================================
-
- -- purpose: writes fixed point into a line
- procedure WRITE (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_ufixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0);
-
- -- purpose: writes fixed point into a line
- procedure WRITE (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_sfixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0);
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed);
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed;
- GOOD : out BOOLEAN);
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed);
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed;
- GOOD : out BOOLEAN);
-
- alias bwrite is WRITE [LINE, UNRESOLVED_ufixed, SIDE, width];
- alias bwrite is WRITE [LINE, UNRESOLVED_sfixed, SIDE, width];
- alias bread is READ [LINE, UNRESOLVED_ufixed];
- alias bread is READ [LINE, UNRESOLVED_ufixed, BOOLEAN];
- alias bread is READ [LINE, UNRESOLVED_sfixed];
- alias bread is READ [LINE, UNRESOLVED_sfixed, BOOLEAN];
- alias BINARY_WRITE is WRITE [LINE, UNRESOLVED_ufixed, SIDE, width];
- alias BINARY_WRITE is WRITE [LINE, UNRESOLVED_sfixed, SIDE, width];
- alias BINARY_READ is READ [LINE, UNRESOLVED_ufixed, BOOLEAN];
- alias BINARY_READ is READ [LINE, UNRESOLVED_ufixed];
- alias BINARY_READ is READ [LINE, UNRESOLVED_sfixed, BOOLEAN];
- alias BINARY_READ is READ [LINE, UNRESOLVED_sfixed];
-
- -- octal read and write
- procedure OWRITE (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_ufixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0);
-
- procedure OWRITE (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_sfixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0);
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed);
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed;
- GOOD : out BOOLEAN);
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed);
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed;
- GOOD : out BOOLEAN);
- alias OCTAL_READ is OREAD [LINE, UNRESOLVED_ufixed, BOOLEAN];
- alias OCTAL_READ is OREAD [LINE, UNRESOLVED_ufixed];
- alias OCTAL_READ is OREAD [LINE, UNRESOLVED_sfixed, BOOLEAN];
- alias OCTAL_READ is OREAD [LINE, UNRESOLVED_sfixed];
- alias OCTAL_WRITE is OWRITE [LINE, UNRESOLVED_ufixed, SIDE, WIDTH];
- alias OCTAL_WRITE is OWRITE [LINE, UNRESOLVED_sfixed, SIDE, WIDTH];
-
- -- hex read and write
- procedure HWRITE (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_ufixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0);
-
- -- purpose: writes fixed point into a line
- procedure HWRITE (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_sfixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0);
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed);
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed;
- GOOD : out BOOLEAN);
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed);
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed;
- GOOD : out BOOLEAN);
- alias HEX_READ is HREAD [LINE, UNRESOLVED_ufixed, BOOLEAN];
- alias HEX_READ is HREAD [LINE, UNRESOLVED_sfixed, BOOLEAN];
- alias HEX_READ is HREAD [LINE, UNRESOLVED_ufixed];
- alias HEX_READ is HREAD [LINE, UNRESOLVED_sfixed];
- alias HEX_WRITE is HWRITE [LINE, UNRESOLVED_ufixed, SIDE, WIDTH];
- alias HEX_WRITE is HWRITE [LINE, UNRESOLVED_sfixed, SIDE, WIDTH];
-
- -- returns a string, useful for:
- -- assert (x = y) report "error found " & to_string(x) severity error;
- function to_string (value : UNRESOLVED_ufixed) return STRING;
- alias to_bstring is to_string [UNRESOLVED_ufixed return STRING];
- alias TO_BINARY_STRING is TO_STRING [UNRESOLVED_ufixed return STRING];
-
- function to_ostring (value : UNRESOLVED_ufixed) return STRING;
- alias TO_OCTAL_STRING is TO_OSTRING [UNRESOLVED_ufixed return STRING];
-
- function to_hstring (value : UNRESOLVED_ufixed) return STRING;
- alias TO_HEX_STRING is TO_HSTRING [UNRESOLVED_ufixed return STRING];
-
- function to_string (value : UNRESOLVED_sfixed) return STRING;
- alias to_bstring is to_string [UNRESOLVED_sfixed return STRING];
- alias TO_BINARY_STRING is TO_STRING [UNRESOLVED_sfixed return STRING];
-
- function to_ostring (value : UNRESOLVED_sfixed) return STRING;
- alias TO_OCTAL_STRING is TO_OSTRING [UNRESOLVED_sfixed return STRING];
-
- function to_hstring (value : UNRESOLVED_sfixed) return STRING;
- alias TO_HEX_STRING is TO_HSTRING [UNRESOLVED_sfixed return STRING];
-
- -- From string functions allow you to convert a string into a fixed
- -- point number. Example:
- -- signal uf1 : ufixed (3 downto -3);
- -- uf1 <= from_string ("0110.100", uf1'high, uf1'low); -- 6.5
- -- The "." is optional in this syntax, however it exist and is
- -- in the wrong location an error is produced. Overflow will
- -- result in saturation.
-
- function from_string (
- bstring : STRING; -- binary string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed;
- alias from_bstring is from_string [STRING, INTEGER, INTEGER
- return UNRESOLVED_ufixed];
- alias from_binary_string is from_string [STRING, INTEGER, INTEGER
- return UNRESOLVED_ufixed];
-
- -- Octal and hex conversions work as follows:
- -- uf1 <= from_hstring ("6.8", 3, -3); -- 6.5 (bottom zeros dropped)
- -- uf1 <= from_ostring ("06.4", 3, -3); -- 6.5 (top zeros dropped)
-
- function from_ostring (
- ostring : STRING; -- Octal string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed;
- alias from_octal_string is from_ostring [STRING, INTEGER, INTEGER
- return UNRESOLVED_ufixed];
-
- function from_hstring (
- hstring : STRING; -- hex string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed;
- alias from_hex_string is from_hstring [STRING, INTEGER, INTEGER
- return UNRESOLVED_ufixed];
-
- function from_string (
- bstring : STRING; -- binary string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed;
- alias from_bstring is from_string [STRING, INTEGER, INTEGER
- return UNRESOLVED_sfixed];
- alias from_binary_string is from_string [STRING, INTEGER, INTEGER
- return UNRESOLVED_sfixed];
-
- function from_ostring (
- ostring : STRING; -- Octal string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed;
- alias from_octal_string is from_ostring [STRING, INTEGER, INTEGER
- return UNRESOLVED_sfixed];
-
- function from_hstring (
- hstring : STRING; -- hex string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed;
- alias from_hex_string is from_hstring [STRING, INTEGER, INTEGER
- return UNRESOLVED_sfixed];
-
- -- Same as above, "size_res" is used for it's range only.
- function from_string (
- bstring : STRING; -- binary string
- size_res : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- alias from_bstring is from_string [STRING, UNRESOLVED_ufixed
- return UNRESOLVED_ufixed];
- alias from_binary_string is from_string [STRING, UNRESOLVED_ufixed
- return UNRESOLVED_ufixed];
-
- function from_ostring (
- ostring : STRING; -- Octal string
- size_res : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- alias from_octal_string is from_ostring [STRING, UNRESOLVED_ufixed
- return UNRESOLVED_ufixed];
-
- function from_hstring (
- hstring : STRING; -- hex string
- size_res : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed;
- alias from_hex_string is from_hstring [STRING, UNRESOLVED_ufixed
- return UNRESOLVED_ufixed];
-
- function from_string (
- bstring : STRING; -- binary string
- size_res : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- alias from_bstring is from_string [STRING, UNRESOLVED_sfixed
- return UNRESOLVED_sfixed];
- alias from_binary_string is from_string [STRING, UNRESOLVED_sfixed
- return UNRESOLVED_sfixed];
-
- function from_ostring (
- ostring : STRING; -- Octal string
- size_res : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- alias from_octal_string is from_ostring [STRING, UNRESOLVED_sfixed
- return UNRESOLVED_sfixed];
-
- function from_hstring (
- hstring : STRING; -- hex string
- size_res : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed;
- alias from_hex_string is from_hstring [STRING, UNRESOLVED_sfixed
- return UNRESOLVED_sfixed];
-
- -- Direct conversion functions. Example:
- -- signal uf1 : ufixed (3 downto -3);
- -- uf1 <= from_string ("0110.100"); -- 6.5
- -- In this case the "." is not optional, and the size of
- -- the output must match exactly.
-
- function from_string (
- bstring : STRING) -- binary string
- return UNRESOLVED_ufixed;
- alias from_bstring is from_string [STRING return UNRESOLVED_ufixed];
- alias from_binary_string is from_string [STRING return UNRESOLVED_ufixed];
-
- -- Direct octal and hex conversion functions. In this case
- -- the string lengths must match. Example:
- -- signal sf1 := sfixed (5 downto -3);
- -- sf1 <= from_ostring ("71.4") -- -6.5
-
- function from_ostring (
- ostring : STRING) -- Octal string
- return UNRESOLVED_ufixed;
- alias from_octal_string is from_ostring [STRING return UNRESOLVED_ufixed];
-
- function from_hstring (
- hstring : STRING) -- hex string
- return UNRESOLVED_ufixed;
- alias from_hex_string is from_hstring [STRING return UNRESOLVED_ufixed];
-
- function from_string (
- bstring : STRING) -- binary string
- return UNRESOLVED_sfixed;
- alias from_bstring is from_string [STRING return UNRESOLVED_sfixed];
- alias from_binary_string is from_string [STRING return UNRESOLVED_sfixed];
-
- function from_ostring (
- ostring : STRING) -- Octal string
- return UNRESOLVED_sfixed;
- alias from_octal_string is from_ostring [STRING return UNRESOLVED_sfixed];
-
- function from_hstring (
- hstring : STRING) -- hex string
- return UNRESOLVED_sfixed;
- alias from_hex_string is from_hstring [STRING return UNRESOLVED_sfixed];
--- rtl_synthesis on
--- pragma synthesis_on
-
- -- IN VHDL-2006 std_logic_vector is a subtype of std_ulogic_vector, so these
- -- extra functions are needed for compatability.
- function to_ufixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed;
-
- function to_ufixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_ufixed) -- for size only
- return UNRESOLVED_ufixed;
-
- function to_sfixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed;
-
- function to_sfixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_sfixed) -- for size only
- return UNRESOLVED_sfixed;
-
- -- unsigned fixed point
- function to_UFix (
- arg : STD_LOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_ufixed;
-
- -- signed fixed point
- function to_SFix (
- arg : STD_LOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_sfixed;
-
-end package fixed_pkg;
--------------------------------------------------------------------------------
--- Proposed package body for the VHDL-200x-FT fixed_pkg package
--- (Fixed point math package)
--- This package body supplies a recommended implementation of these functions
--- Version : $Revision: 1.21 $
--- Date : $Date: 2007/09/26 18:08:53 $
---
--- Created for VHDL-200X-ft, David Bishop (dbishop@vhdl.org)
--------------------------------------------------------------------------------
-library IEEE;
-use IEEE.MATH_REAL.all;
-
-package body fixed_pkg is
- -- Author David Bishop (dbishop@vhdl.org)
- -- Other contributers: Jim Lewis, Yannick Grugni, Ryan W. Hilton
- -- null array constants
- constant NAUF : UNRESOLVED_ufixed (0 downto 1) := (others => '0');
- constant NASF : UNRESOLVED_sfixed (0 downto 1) := (others => '0');
- constant NSLV : STD_ULOGIC_VECTOR (0 downto 1) := (others => '0');
-
- -- This differed constant will tell you if the package body is synthesizable
- -- or implemented as real numbers, set to "true" if synthesizable.
- constant fixedsynth_or_real : BOOLEAN := true;
-
- -- %%% Replicated functions
- function maximum (
- l, r : integer) -- inputs
- return integer is
- begin -- function max
- if l > r then return l;
- else return r;
- end if;
- end function maximum;
-
- function minimum (
- l, r : integer) -- inputs
- return integer is
- begin -- function min
- if l > r then return r;
- else return l;
- end if;
- end function minimum;
-
- function "sra" (arg : SIGNED; count : INTEGER)
- return SIGNED is
- begin
- if (COUNT >= 0) then
- return SHIFT_RIGHT(arg, count);
- else
- return SHIFT_LEFT(arg, -count);
- end if;
- end function "sra";
-
- function or_reduce (arg : STD_ULOGIC_VECTOR)
- return STD_LOGIC is
- variable Upper, Lower : STD_ULOGIC;
- variable Half : INTEGER;
- variable BUS_int : STD_ULOGIC_VECTOR (arg'length - 1 downto 0);
- variable Result : STD_ULOGIC;
- begin
- if (arg'length < 1) then -- In the case of a NULL range
- Result := '0';
- else
- BUS_int := to_ux01 (arg);
- if (BUS_int'length = 1) then
- Result := BUS_int (BUS_int'left);
- elsif (BUS_int'length = 2) then
- Result := BUS_int (BUS_int'right) or BUS_int (BUS_int'left);
- else
- Half := (BUS_int'length + 1) / 2 + BUS_int'right;
- Upper := or_reduce (BUS_int (BUS_int'left downto Half));
- Lower := or_reduce (BUS_int (Half - 1 downto BUS_int'right));
- Result := Upper or Lower;
- end if;
- end if;
- return Result;
- end function or_reduce;
-
- -- purpose: AND all of the bits in a vector together
- -- This is a copy of the proposed "and_reduce" from 1076.3
- function and_reduce (arg : STD_ULOGIC_VECTOR)
- return STD_LOGIC is
- variable Upper, Lower : STD_ULOGIC;
- variable Half : INTEGER;
- variable BUS_int : STD_ULOGIC_VECTOR (arg'length - 1 downto 0);
- variable Result : STD_ULOGIC;
- begin
- if (arg'length < 1) then -- In the case of a NULL range
- Result := '1';
- else
- BUS_int := to_ux01 (arg);
- if (BUS_int'length = 1) then
- Result := BUS_int (BUS_int'left);
- elsif (BUS_int'length = 2) then
- Result := BUS_int (BUS_int'right) and BUS_int (BUS_int'left);
- else
- Half := (BUS_int'length + 1) / 2 + BUS_int'right;
- Upper := and_reduce (BUS_int (BUS_int'left downto Half));
- Lower := and_reduce (BUS_int (Half - 1 downto BUS_int'right));
- Result := Upper and Lower;
- end if;
- end if;
- return Result;
- end function and_reduce;
-
- function xor_reduce (arg : STD_ULOGIC_VECTOR) return STD_ULOGIC is
- variable Upper, Lower : STD_ULOGIC;
- variable Half : INTEGER;
- variable BUS_int : STD_ULOGIC_VECTOR (arg'length - 1 downto 0);
- variable Result : STD_ULOGIC := '0'; -- In the case of a NULL range
- begin
- if (arg'length >= 1) then
- BUS_int := to_ux01 (arg);
- if (BUS_int'length = 1) then
- Result := BUS_int (BUS_int'left);
- elsif (BUS_int'length = 2) then
- Result := BUS_int(BUS_int'right) xor BUS_int(BUS_int'left);
- else
- Half := (BUS_int'length + 1) / 2 + BUS_int'right;
- Upper := xor_reduce (BUS_int (BUS_int'left downto Half));
- Lower := xor_reduce (BUS_int (Half - 1 downto BUS_int'right));
- Result := Upper xor Lower;
- end if;
- end if;
- return Result;
- end function xor_reduce;
-
- function nand_reduce(arg : std_ulogic_vector) return STD_ULOGIC is
- begin
- return not and_reduce (arg);
- end function nand_reduce;
- function nor_reduce(arg : std_ulogic_vector) return STD_ULOGIC is
- begin
- return not or_reduce (arg);
- end function nor_reduce;
- function xnor_reduce(arg : std_ulogic_vector) return STD_ULOGIC is
- begin
- return not xor_reduce (arg);
- end function xnor_reduce;
- -- Match table, copied form new std_logic_1164
--- type stdlogic_table is array(STD_ULOGIC, STD_ULOGIC) of STD_ULOGIC;
--- constant match_logic_table : stdlogic_table := (
--- -----------------------------------------------------
--- -- U X 0 1 Z W L H - | |
--- -----------------------------------------------------
--- ('U', 'U', 'U', 'U', 'U', 'U', 'U', 'U', '1'), -- | U |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '1'), -- | X |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '1'), -- | 0 |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '1'), -- | 1 |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '1'), -- | Z |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '1'), -- | W |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '1'), -- | L |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '1'), -- | H |
--- ('1', '1', '1', '1', '1', '1', '1', '1', '1') -- | - |
--- );
-
--- constant no_match_logic_table : stdlogic_table := (
--- -----------------------------------------------------
--- -- U X 0 1 Z W L H - | |
--- -----------------------------------------------------
--- ('U', 'U', 'U', 'U', 'U', 'U', 'U', 'U', '0'), -- | U |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '0'), -- | X |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '0'), -- | 0 |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '0'), -- | 1 |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '0'), -- | Z |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '0'), -- | W |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '0'), -- | L |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '0'), -- | H |
--- ('0', '0', '0', '0', '0', '0', '0', '0', '0') -- | - |
--- );
-
- -------------------------------------------------------------------
- -- ?= functions, Similar to "std_match", but returns "std_ulogic".
- -------------------------------------------------------------------
- function \?=\ (l, r : STD_ULOGIC) return STD_ULOGIC is
- variable lx, rx : STD_ULOGIC;
- begin
--- return match_logic_table (l, r);
- lx := to_x01(l);
- rx := to_x01(r);
- if lx = 'X' or rx = 'X' then
- return 'X';
- elsif lx = rx then
- return '1';
- else
- return '0';
- end if;
- end function \?=\;
- function \?/=\ (l, r : STD_ULOGIC) return STD_ULOGIC is
- begin
--- return no_match_logic_table (l, r);
- return not \?=\ (l, r);
- end function \?/=\;
- -- "?=" operator is similar to "std_match", but returns a std_ulogic..
- -- Id: M.2B
- function \?=\ (L, R: UNSIGNED) return STD_ULOGIC is
- constant L_LEFT : INTEGER := L'LENGTH-1;
- constant R_LEFT : INTEGER := R'LENGTH-1;
- alias XL : UNSIGNED(L_LEFT downto 0) is L;
- alias XR : UNSIGNED(R_LEFT downto 0) is R;
- constant SIZE : NATURAL := MAXIMUM(L'LENGTH, R'LENGTH);
- variable LX : UNSIGNED(SIZE-1 downto 0);
- variable RX : UNSIGNED(SIZE-1 downto 0);
- variable result, result1 : STD_ULOGIC; -- result
- begin
- -- Logically identical to an "=" operator.
- if ((L'LENGTH < 1) or (R'LENGTH < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?="": null detected, returning X"
- severity warning;
- return 'X';
- else
- LX := RESIZE(XL, SIZE);
- RX := RESIZE(XR, SIZE);
- result := '1';
- for i in LX'low to LX'high loop
- result1 := \?=\(LX(i), RX(i));
- if result1 = 'U' then
- return 'U';
- elsif result1 = 'X' or result = 'X' then
- result := 'X';
- else
- result := result and result1;
- end if;
- end loop;
- return result;
- end if;
- end function \?=\;
-
- -- Id: M.3B
- function \?=\ (L, R: SIGNED) return std_ulogic is
- constant L_LEFT : INTEGER := L'LENGTH-1;
- constant R_LEFT : INTEGER := R'LENGTH-1;
- alias XL : SIGNED(L_LEFT downto 0) is L;
- alias XR : SIGNED(R_LEFT downto 0) is R;
- constant SIZE : NATURAL := MAXIMUM(L'LENGTH, R'LENGTH);
- variable LX : SIGNED(SIZE-1 downto 0);
- variable RX : SIGNED(SIZE-1 downto 0);
- variable result, result1 : STD_ULOGIC; -- result
- begin -- ?=
- if ((L'LENGTH < 1) or (R'LENGTH < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?="": null detected, returning X"
- severity warning;
- return 'X';
- else
- LX := RESIZE(XL, SIZE);
- RX := RESIZE(XR, SIZE);
- result := '1';
- for i in LX'low to LX'high loop
- result1 := \?=\ (LX(i), RX(i));
- if result1 = 'U' then
- return 'U';
- elsif result1 = 'X' or result = 'X' then
- result := 'X';
- else
- result := result and result1;
- end if;
- end loop;
- return result;
- end if;
- end function \?=\;
-
- function \?/=\ (L, R : UNSIGNED) return std_ulogic is
- constant L_LEFT : INTEGER := L'LENGTH-1;
- constant R_LEFT : INTEGER := R'LENGTH-1;
- alias XL : UNSIGNED(L_LEFT downto 0) is L;
- alias XR : UNSIGNED(R_LEFT downto 0) is R;
- constant SIZE : NATURAL := MAXIMUM(L'LENGTH, R'LENGTH);
- variable LX : UNSIGNED(SIZE-1 downto 0);
- variable RX : UNSIGNED(SIZE-1 downto 0);
- variable result, result1 : STD_ULOGIC; -- result
- begin -- ?=
- if ((L'LENGTH < 1) or (R'LENGTH < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?/="": null detected, returning X"
- severity warning;
- return 'X';
- else
- LX := RESIZE(XL, SIZE);
- RX := RESIZE(XR, SIZE);
- result := '0';
- for i in LX'low to LX'high loop
- result1 := \?/=\ (LX(i), RX(i));
- if result1 = 'U' then
- return 'U';
- elsif result1 = 'X' or result = 'X' then
- result := 'X';
- else
- result := result or result1;
- end if;
- end loop;
- return result;
- end if;
- end function \?/=\;
-
- function \?/=\ (L, R : SIGNED) return std_ulogic is
- constant L_LEFT : INTEGER := L'LENGTH-1;
- constant R_LEFT : INTEGER := R'LENGTH-1;
- alias XL : SIGNED(L_LEFT downto 0) is L;
- alias XR : SIGNED(R_LEFT downto 0) is R;
- constant SIZE : NATURAL := MAXIMUM(L'LENGTH, R'LENGTH);
- variable LX : SIGNED(SIZE-1 downto 0);
- variable RX : SIGNED(SIZE-1 downto 0);
- variable result, result1 : STD_ULOGIC; -- result
- begin -- ?=
- if ((L'LENGTH < 1) or (R'LENGTH < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?/="": null detected, returning X"
- severity warning;
- return 'X';
- else
- LX := RESIZE(XL, SIZE);
- RX := RESIZE(XR, SIZE);
- result := '0';
- for i in LX'low to LX'high loop
- result1 := \?/=\ (LX(i), RX(i));
- if result1 = 'U' then
- return 'U';
- elsif result1 = 'X' or result = 'X' then
- result := 'X';
- else
- result := result or result1;
- end if;
- end loop;
- return result;
- end if;
- end function \?/=\;
-
- function Is_X ( s : UNSIGNED ) return BOOLEAN is
- begin
- return Is_X (STD_LOGIC_VECTOR (s));
- end function Is_X;
-
- function Is_X ( s : SIGNED ) return BOOLEAN is
- begin
- return Is_X (STD_LOGIC_VECTOR (s));
- end function Is_X;
- function \?>\ (L, R : UNSIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?>"": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?>"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?>"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l > r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?>\;
- -- %%% function "?>" (L, R : UNSIGNED) return std_ulogic is
- -- %%% end function "?>"\;
- function \?>\ (L, R : SIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?>"": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?>"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?>"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l > r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?>\;
- function \?>=\ (L, R : UNSIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?>="": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?>="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?>="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l >= r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?>=\;
- -- %%% function "?>=" (L, R : UNSIGNED) return std_ulogic is
- -- %%% end function "?>=";
- function \?>=\ (L, R : SIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?>="": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?>="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?>="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l >= r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?>=\;
- function \?<\ (L, R : UNSIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?<"": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?<"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?<"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l < r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?<\;
- -- %%% function "?<" (L, R : UNSIGNED) return std_ulogic is
- -- %%% end function "?<";
- function \?<\ (L, R : SIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?<"": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?<"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?<"": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l < r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?<\;
- function \?<=\ (L, R : UNSIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?<="": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?<="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?<="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l <= r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?<=\;
- -- %%% function "?<=" (L, R : UNSIGNED) return std_ulogic is
- -- %%% end function "?<=";
- function \?<=\ (L, R : SIGNED) return STD_ULOGIC is
- begin
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "NUMERIC_STD.""?<="": null detected, returning X"
- severity warning;
- return 'X';
- else
- for i in L'range loop
- if L(i) = '-' then
- report "NUMERIC_STD.""?<="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- for i in R'range loop
- if R(i) = '-' then
- report "NUMERIC_STD.""?<="": '-' found in compare string"
- severity error;
- return 'X';
- end if;
- end loop;
- if is_x(l) or is_x(r) then
- return 'X';
- elsif l <= r then
- return '1';
- else
- return '0';
- end if;
- end if;
- end function \?<=\;
-
--- %%% END replicated functions
- -- Special version of "minimum" to do some boundary checking without errors
- function mins (l, r : INTEGER)
- return INTEGER is
- begin -- function mins
- if (L = INTEGER'low or R = INTEGER'low) then
- return 0; -- error condition, silent
- end if;
- return minimum (L, R);
- end function mins;
-
- -- Special version of "minimum" to do some boundary checking with errors
- function mine (l, r : INTEGER)
- return INTEGER is
- begin -- function mine
- if (L = INTEGER'low or R = INTEGER'low) then
- report "fixed_pkg:"
- & " Unbounded number passed, was a literal used?"
- severity error;
- return 0;
- end if;
- return minimum (L, R);
- end function mine;
-
- -- The following functions are used only internally. Every function
- -- calls "cleanvec" either directly or indirectly.
- -- purpose: Fixes "downto" problem and resolves meta states
- function cleanvec (
- arg : UNRESOLVED_sfixed) -- input
- return UNRESOLVED_sfixed is
- constant left_index : INTEGER := maximum(arg'left, arg'right);
- constant right_index : INTEGER := mins(arg'left, arg'right);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin -- function cleanvec
- assert not (arg'ascending and (arg'low /= INTEGER'low))
- report "fixed_pkg:"
- & " Vector passed using a ""to"" range, expected is ""downto"""
- severity error;
- return arg;
- end function cleanvec;
-
- -- purpose: Fixes "downto" problem and resolves meta states
- function cleanvec (
- arg : UNRESOLVED_ufixed) -- input
- return UNRESOLVED_ufixed is
- constant left_index : INTEGER := maximum(arg'left, arg'right);
- constant right_index : INTEGER := mins(arg'left, arg'right);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin -- function cleanvec
- assert not (arg'ascending and (arg'low /= INTEGER'low))
- report "fixed_pkg:"
- & " Vector passed using a ""to"" range, expected is ""downto"""
- severity error;
- return arg;
- end function cleanvec;
-
- -- Type convert a "unsigned" into a "ufixed", used internally
- function to_fixed (
- arg : UNSIGNED; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- begin -- function to_fixed
- result := UNRESOLVED_ufixed(arg);
- return result;
- end function to_fixed;
-
- -- Type convert a "signed" into an "sfixed", used internally
- function to_fixed (
- arg : SIGNED; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- begin -- function to_fixed
- result := UNRESOLVED_sfixed(arg);
- return result;
- end function to_fixed;
-
- -- Type convert a "ufixed" into an "unsigned", used internally
- function to_uns (
- arg : UNRESOLVED_ufixed) -- fp vector
- return UNSIGNED is
- subtype t is UNSIGNED(arg'high - arg'low downto 0);
- variable slv : t;
- begin -- function to_uns
- slv := t(arg);
- return slv;
- end function to_uns;
-
- -- Type convert an "sfixed" into a "signed", used internally
- function to_s (
- arg : UNRESOLVED_sfixed) -- fp vector
- return SIGNED is
- subtype t is SIGNED(arg'high - arg'low downto 0);
- variable slv : t;
- begin -- function to_s
- slv := t(arg);
- return slv;
- end function to_s;
-
- -- adds 1 to the LSB of the number
- procedure round_up (arg : in UNRESOLVED_ufixed;
- result : out UNRESOLVED_ufixed;
- overflowx : out BOOLEAN) is
- variable arguns, resuns : UNSIGNED (arg'high-arg'low+1 downto 0)
- := (others => '0');
- begin -- round_up
- arguns (arguns'high-1 downto 0) := to_uns (arg);
- resuns := arguns + 1;
- result := to_fixed(resuns(arg'high-arg'low
- downto 0), arg'high, arg'low);
- overflowx := (resuns(resuns'high) = '1');
- end procedure round_up;
-
- -- adds 1 to the LSB of the number
- procedure round_up (arg : in UNRESOLVED_sfixed;
- result : out UNRESOLVED_sfixed;
- overflowx : out BOOLEAN) is
- variable args, ress : SIGNED (arg'high-arg'low+1 downto 0);
- begin -- round_up
- args (args'high-1 downto 0) := to_s (arg);
- args(args'high) := arg(arg'high); -- sign extend
- ress := args + 1;
- result := to_fixed(ress (ress'high-1
- downto 0), arg'high, arg'low);
- overflowx := ((arg(arg'high) /= ress(ress'high-1))
- and (or_reduce (STD_ULOGIC_VECTOR(ress)) /= '0'));
- end procedure round_up;
-
- -- Rounding - Performs a "round_nearest" (IEEE 754) which rounds up
- -- when the remainder is > 0.5. If the remainder IS 0.5 then if the
- -- bottom bit is a "1" it is rounded, otherwise it remains the same.
- function round_fixed (arg : UNRESOLVED_ufixed;
- remainder : UNRESOLVED_ufixed;
- overflow_style : fixed_overflow_style_type := fixed_overflow_style)
- return UNRESOLVED_ufixed is
- variable rounds : BOOLEAN;
- variable round_overflow : BOOLEAN;
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- rounds := false;
- if (remainder'length > 1) then
- if (remainder (remainder'high) = '1') then
- rounds := (arg(arg'low) = '1')
- or (or_reduce (to_sulv(remainder(remainder'high-1 downto
- remainder'low))) = '1');
- end if;
- else
- rounds := (arg(arg'low) = '1') and (remainder (remainder'high) = '1');
- end if;
- if rounds then
- round_up(arg => arg,
- result => result,
- overflowx => round_overflow);
- else
- result := arg;
- end if;
- if (overflow_style = fixed_saturate) and round_overflow then
- result := saturate (result'high, result'low);
- end if;
- return result;
- end function round_fixed;
-
- -- Rounding case statement
- function round_fixed (arg : UNRESOLVED_sfixed;
- remainder : UNRESOLVED_sfixed;
- overflow_style : fixed_overflow_style_type := fixed_overflow_style)
- return UNRESOLVED_sfixed is
- variable rounds : BOOLEAN;
- variable round_overflow : BOOLEAN;
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- rounds := false;
- if (remainder'length > 1) then
- if (remainder (remainder'high) = '1') then
- rounds := (arg(arg'low) = '1')
- or (or_reduce (to_sulv(remainder(remainder'high-1 downto
- remainder'low))) = '1');
- end if;
- else
- rounds := (arg(arg'low) = '1') and (remainder (remainder'high) = '1');
- end if;
- if rounds then
- round_up(arg => arg,
- result => result,
- overflowx => round_overflow);
- else
- result := arg;
- end if;
- if round_overflow then
- if (overflow_style = fixed_saturate) then
- if arg(arg'high) = '0' then
- result := saturate (result'high, result'low);
- else
- result := not saturate (result'high, result'low);
- end if;
- -- Sign bit not fixed when wrapping
- end if;
- end if;
- return result;
- end function round_fixed;
-
- -- converts an sfixed into a ufixed. The output is the same length as the
- -- input, because abs("1000") = "1000" = 8.
- function to_ufixed (
- arg : UNRESOLVED_sfixed)
- return UNRESOLVED_ufixed
- is
- constant left_index : INTEGER := arg'high;
- constant right_index : INTEGER := mine(arg'low, arg'low);
- variable xarg : UNRESOLVED_sfixed(left_index+1 downto right_index);
- variable result : UNRESOLVED_ufixed(left_index downto right_index);
- begin
- if arg'length < 1 then
- return NAUF;
- end if;
- xarg := abs(arg);
- result := UNRESOLVED_ufixed (xarg (left_index downto right_index));
- return result;
- end function to_ufixed;
-
------------------------------------------------------------------------------
--- Visible functions
------------------------------------------------------------------------------
-
- -- Conversion functions. These are needed for synthesis where typically
- -- the only input and output type is a std_logic_vector.
- function to_sulv (
- arg : UNRESOLVED_ufixed) -- fixed point vector
- return STD_ULOGIC_VECTOR is
- variable result : STD_ULOGIC_VECTOR (arg'length-1 downto 0);
- begin
- if arg'length < 1 then
- return NSLV;
- end if;
- result := STD_ULOGIC_VECTOR (arg);
- return result;
- end function to_sulv;
-
- function to_sulv (
- arg : UNRESOLVED_sfixed) -- fixed point vector
- return STD_ULOGIC_VECTOR is
- variable result : STD_ULOGIC_VECTOR (arg'length-1 downto 0);
- begin
- if arg'length < 1 then
- return NSLV;
- end if;
- result := STD_ULOGIC_VECTOR (arg);
- return result;
- end function to_sulv;
-
- function to_slv (
- arg : UNRESOLVED_ufixed) -- fixed point vector
- return STD_LOGIC_VECTOR is
- begin
- return std_logic_vector(to_sulv(arg));
- end function to_slv;
-
- function to_slv (
- arg : UNRESOLVED_sfixed) -- fixed point vector
- return STD_LOGIC_VECTOR is
- begin
- return std_logic_vector(to_sulv(arg));
- end function to_slv;
-
- function to_ufixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return unresolved_ufixed is
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- begin
- if (arg'length < 1 or right_index > left_index) then
- return NAUF;
- end if;
- if (arg'length /= result'length) then
- report "fixed_pkg:" & "TO_UFIXED(SLV) "
- & "Vector lengths do not match. Input length is "
- & INTEGER'image(arg'length) & " and output will be "
- & INTEGER'image(result'length) & " wide."
- severity error;
- return NAUF;
- else
- result := to_fixed (arg => UNSIGNED(arg),
- left_index => left_index,
- right_index => right_index);
- return result;
- end if;
- end function to_ufixed;
-
- function to_sfixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return unresolved_sfixed is
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- begin
- if (arg'length < 1 or right_index > left_index) then
- return NASF;
- end if;
- if (arg'length /= result'length) then
- report "fixed_pkg:" & "TO_SFIXED(SLV) "
- & "Vector lengths do not match. Input length is "
- & INTEGER'image(arg'length) & " and output will be "
- & INTEGER'image(result'length) & " wide."
- severity error;
- return NASF;
- else
- result := to_fixed (arg => SIGNED(arg),
- left_index => left_index,
- right_index => right_index);
- return result;
- end if;
- end function to_sfixed;
-
- -- Two's complement number, Grows the vector by 1 bit.
- -- because "abs (1000.000) = 01000.000" or abs(-16) = 16.
- function "abs" (
- arg : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- constant left_index : INTEGER := arg'high;
- constant right_index : INTEGER := mine(arg'low, arg'low);
- variable ressns : SIGNED (arg'length downto 0);
- variable result : UNRESOLVED_sfixed (left_index+1 downto right_index);
- begin
- if (arg'length < 1 or result'length < 1) then
- return NASF;
- end if;
- ressns (arg'length-1 downto 0) := to_s (cleanvec (arg));
- ressns (arg'length) := ressns (arg'length-1); -- expand sign bit
- result := to_fixed (abs(ressns), left_index+1, right_index);
- return result;
- end function "abs";
-
- -- also grows the vector by 1 bit.
- function "-" (
- arg : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- constant left_index : INTEGER := arg'high+1;
- constant right_index : INTEGER := mine(arg'low, arg'low);
- variable ressns : SIGNED (arg'length downto 0);
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- begin
- if (arg'length < 1 or result'length < 1) then
- return NASF;
- end if;
- ressns (arg'length-1 downto 0) := to_s (cleanvec(arg));
- ressns (arg'length) := ressns (arg'length-1); -- expand sign bit
- result := to_fixed (-ressns, left_index, right_index);
- return result;
- end function "-";
-
- -- Addition
- function "+" (
- l, r : UNRESOLVED_ufixed) -- ufixed(a downto b) + ufixed(c downto d) =
- return UNRESOLVED_ufixed is -- ufixed(max(a,c)+1 downto min(b,d))
- constant left_index : INTEGER := maximum(l'high, r'high)+1;
- constant right_index : INTEGER := mine(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (left_index-right_index
- downto 0);
- variable result_slv : UNSIGNED (left_index-right_index
- downto 0);
- begin
- if (l'length < 1 or r'length < 1 or result'length < 1) then
- return NAUF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- result_slv := lslv + rslv;
- result := to_fixed(result_slv, left_index, right_index);
- return result;
- end function "+";
-
- function "+" (
- l, r : UNRESOLVED_sfixed) -- sfixed(a downto b) + sfixed(c downto d) =
- return UNRESOLVED_sfixed is -- sfixed(max(a,c)+1 downto min(b,d))
- constant left_index : INTEGER := maximum(l'high, r'high)+1;
- constant right_index : INTEGER := mine(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (left_index-right_index downto 0);
- variable result_slv : SIGNED (left_index-right_index downto 0);
- begin
- if (l'length < 1 or r'length < 1 or result'length < 1) then
- return NASF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- result_slv := lslv + rslv;
- result := to_fixed(result_slv, left_index, right_index);
- return result;
- end function "+";
-
- -- Subtraction
- function "-" (
- l, r : UNRESOLVED_ufixed) -- ufixed(a downto b) - ufixed(c downto d) =
- return UNRESOLVED_ufixed is -- ufixed(max(a,c)+1 downto min(b,d))
- constant left_index : INTEGER := maximum(l'high, r'high)+1;
- constant right_index : INTEGER := mine(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (left_index-right_index
- downto 0);
- variable result_slv : UNSIGNED (left_index-right_index
- downto 0);
- begin
- if (l'length < 1 or r'length < 1 or result'length < 1) then
- return NAUF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- result_slv := lslv - rslv;
- result := to_fixed(result_slv, left_index, right_index);
- return result;
- end function "-";
-
- function "-" (
- l, r : UNRESOLVED_sfixed) -- sfixed(a downto b) - sfixed(c downto d) =
- return UNRESOLVED_sfixed is -- sfixed(max(a,c)+1 downto min(b,d))
- constant left_index : INTEGER := maximum(l'high, r'high)+1;
- constant right_index : INTEGER := mine(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (left_index-right_index downto 0);
- variable result_slv : SIGNED (left_index-right_index downto 0);
- begin
- if (l'length < 1 or r'length < 1 or result'length < 1) then
- return NASF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- result_slv := lslv - rslv;
- result := to_fixed(result_slv, left_index, right_index);
- return result;
- end function "-";
-
- function "*" (
- l, r : UNRESOLVED_ufixed) -- ufixed(a downto b) * ufixed(c downto d) =
- return UNRESOLVED_ufixed is -- ufixed(a+c+1 downto b+d)
- variable lslv : UNSIGNED (l'length-1 downto 0);
- variable rslv : UNSIGNED (r'length-1 downto 0);
- variable result_slv : UNSIGNED (r'length+l'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (l'high + r'high+1 downto
- mine(l'low, l'low) + mine(r'low, r'low));
- begin
- if (l'length < 1 or r'length < 1 or
- result'length /= result_slv'length) then
- return NAUF;
- end if;
- lslv := to_uns (cleanvec(l));
- rslv := to_uns (cleanvec(r));
- result_slv := lslv * rslv;
- result := to_fixed (result_slv, result'high, result'low);
- return result;
- end function "*";
-
- function "*" (
- l, r : UNRESOLVED_sfixed) -- sfixed(a downto b) * sfixed(c downto d) =
- return UNRESOLVED_sfixed is -- sfixed(a+c+1 downto b+d)
- variable lslv : SIGNED (l'length-1 downto 0);
- variable rslv : SIGNED (r'length-1 downto 0);
- variable result_slv : SIGNED (r'length+l'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (l'high + r'high+1 downto
- mine(l'low, l'low) + mine(r'low, r'low));
- begin
- if (l'length < 1 or r'length < 1 or
- result'length /= result_slv'length) then
- return NASF;
- end if;
- lslv := to_s (cleanvec(l));
- rslv := to_s (cleanvec(r));
- result_slv := lslv * rslv;
- result := to_fixed (result_slv, result'high, result'low);
- return result;
- end function "*";
-
--- function "/" (
--- l, r : UNRESOLVED_ufixed) -- ufixed(a downto b) / ufixed(c downto d) =
--- return UNRESOLVED_ufixed is -- ufixed(a-d downto b-c-1)
--- begin
--- return divide (l, r);
--- end function "/";
-
--- function "/" (
--- l, r : UNRESOLVED_sfixed) -- sfixed(a downto b) / sfixed(c downto d) =
--- return UNRESOLVED_sfixed is -- sfixed(a-d+1 downto b-c)
--- begin
--- return divide (l, r);
--- end function "/";
-
- -- This version of divide gives the user more control
- -- ufixed(a downto b) / ufixed(c downto d) = ufixed(a-d downto b-c-1)
--- function divide (
--- l, r : UNRESOLVED_ufixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed is
--- variable result : UNRESOLVED_ufixed (l'high - mine(r'low, r'low) downto
--- mine (l'low, l'low) - r'high -1);
--- variable dresult : UNRESOLVED_ufixed (result'high downto result'low -guard_bits);
--- variable lresize : UNRESOLVED_ufixed (l'high downto l'high - dresult'length+1);
--- variable lslv : UNSIGNED (lresize'length-1 downto 0);
--- variable rslv : UNSIGNED (r'length-1 downto 0);
--- variable result_slv : UNSIGNED (lresize'length-1 downto 0);
--- begin
--- if (l'length < 1 or r'length < 1 or
--- mins(r'low, r'low) /= r'low or mins(l'low, l'low) /= l'low) then
--- return NAUF;
--- end if;
--- lresize := resize (arg => l,
--- left_index => lresize'high,
--- right_index => lresize'low,
--- overflow_style => fixed_wrap, -- vector only grows
--- round_style => fixed_truncate);
--- lslv := to_uns (cleanvec (lresize));
--- rslv := to_uns (cleanvec (r));
--- if (rslv = 0) then
--- report "fixed_pkg:"
--- & "DIVIDE(ufixed) Division by zero" severity error;
--- result := saturate (result'high, result'low); -- saturate
--- else
--- result_slv := lslv / rslv;
--- dresult := to_fixed (result_slv, dresult'high, dresult'low);
--- result := resize (arg => dresult,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => fixed_wrap, -- overflow impossible
--- round_style => round_style);
--- end if;
--- return result;
--- end function divide;
-
- -- sfixed(a downto b) / sfixed(c downto d) = sfixed(a-d+1 downto b-c)
--- function divide (
--- l, r : UNRESOLVED_sfixed;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed is
--- variable result : UNRESOLVED_sfixed (l'high - mine(r'low, r'low) + 1 downto
--- mine (l'low, l'low) - r'high);
--- variable dresult : UNRESOLVED_sfixed (result'high downto result'low-guard_bits);
--- variable lresize : UNRESOLVED_sfixed (l'high+1 downto l'high+1 -dresult'length+1);
--- variable lslv : SIGNED (lresize'length-1 downto 0);
--- variable rslv : SIGNED (r'length-1 downto 0);
--- variable result_slv : SIGNED (lresize'length-1 downto 0);
--- begin
--- if (l'length < 1 or r'length < 1 or
--- mins(r'low, r'low) /= r'low or mins(l'low, l'low) /= l'low) then
--- return NASF;
--- end if;
--- lresize := resize (arg => l,
--- left_index => lresize'high,
--- right_index => lresize'low,
--- overflow_style => fixed_wrap, -- vector only grows
--- round_style => fixed_truncate);
--- lslv := to_s (cleanvec (lresize));
--- rslv := to_s (cleanvec (r));
--- if (rslv = 0) then
--- report "fixed_pkg:"
--- & "DIVIDE(sfixed) Division by zero" severity error;
--- result := saturate (result'high, result'low);
--- else
--- result_slv := lslv / rslv;
--- dresult := to_fixed (result_slv, dresult'high, dresult'low);
--- result := resize (arg => dresult,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => fixed_wrap, -- overflow impossible
--- round_style => round_style);
--- end if;
--- return result;
--- end function divide;
-
- -- 1 / ufixed(a downto b) = ufixed(-b downto -a-1)
--- function reciprocal (
--- arg : UNRESOLVED_ufixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed is
--- constant one : UNRESOLVED_ufixed (0 downto 0) := "1";
--- begin
--- return divide (l => one,
--- r => arg,
--- round_style => round_style,
--- guard_bits => guard_bits);
--- end function reciprocal;
-
- -- 1 / sfixed(a downto b) = sfixed(-b+1 downto -a)
--- function reciprocal (
--- arg : UNRESOLVED_sfixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed is
--- constant one : UNRESOLVED_sfixed (1 downto 0) := "01"; -- extra bit.
--- variable resultx : UNRESOLVED_sfixed (-mine(arg'low, arg'low)+2 downto -arg'high);
--- begin
--- if (arg'length < 1 or resultx'length < 1) then
--- return NASF;
--- else
--- resultx := divide (l => one,
--- r => arg,
--- round_style => round_style,
--- guard_bits => guard_bits);
--- return resultx (resultx'high-1 downto resultx'low); -- remove extra bit
--- end if;
--- end function reciprocal;
-
- -- ufixed (a downto b) rem ufixed (c downto d)
- -- = ufixed (min(a,c) downto min(b,d))
--- function "rem" (
--- l, r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return remainder (l, r);
--- end function "rem";
-
--- -- remainder
--- -- sfixed (a downto b) rem sfixed (c downto d)
--- -- = sfixed (min(a,c) downto min(b,d))
--- function "rem" (
--- l, r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return remainder (l, r);
--- end function "rem";
-
- -- ufixed (a downto b) rem ufixed (c downto d)
- -- = ufixed (min(a,c) downto min(b,d))
--- function remainder (
--- l, r : UNRESOLVED_ufixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed is
--- variable result : UNRESOLVED_ufixed (minimum(l'high, r'high) downto
--- mine(l'low, r'low));
--- variable lresize : UNRESOLVED_ufixed (maximum(l'high, r'low) downto
--- mins(r'low, r'low)-guard_bits);
--- variable rresize : UNRESOLVED_ufixed (r'high downto r'low-guard_bits);
--- variable dresult : UNRESOLVED_ufixed (rresize'range);
--- variable lslv : UNSIGNED (lresize'length-1 downto 0);
--- variable rslv : UNSIGNED (rresize'length-1 downto 0);
--- variable result_slv : UNSIGNED (rslv'range);
--- begin
--- if (l'length < 1 or r'length < 1 or
--- mins(r'low, r'low) /= r'low or mins(l'low, l'low) /= l'low) then
--- return NAUF;
--- end if;
--- lresize := resize (arg => l,
--- left_index => lresize'high,
--- right_index => lresize'low,
--- overflow_style => fixed_wrap, -- vector only grows
--- round_style => fixed_truncate);
--- lslv := to_uns (lresize);
--- rresize := resize (arg => r,
--- left_index => rresize'high,
--- right_index => rresize'low,
--- overflow_style => fixed_wrap, -- vector only grows
--- round_style => fixed_truncate);
--- rslv := to_uns (rresize);
--- if (rslv = 0) then
--- report "fixed_pkg:"
--- & "remainder(ufixed) Division by zero" severity error;
--- result := saturate (result'high, result'low); -- saturate
--- else
--- if (r'low <= l'high) then
--- result_slv := lslv rem rslv;
--- dresult := to_fixed (result_slv, dresult'high, dresult'low);
--- result := resize (arg => dresult,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => fixed_wrap, -- can't overflow
--- round_style => round_style);
--- end if;
--- if l'low < r'low then
--- result(mins(r'low-1, l'high) downto l'low) :=
--- cleanvec(l(mins(r'low-1, l'high) downto l'low));
--- end if;
--- end if;
--- return result;
--- end function remainder;
-
--- -- remainder
--- -- sfixed (a downto b) rem sfixed (c downto d)
--- -- = sfixed (min(a,c) downto min(b,d))
--- function remainder (
--- l, r : UNRESOLVED_sfixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed is
--- variable l_abs : UNRESOLVED_ufixed (l'range);
--- variable r_abs : UNRESOLVED_ufixed (r'range);
--- variable result : UNRESOLVED_sfixed (minimum(r'high, l'high) downto
--- mine(r'low, l'low));
--- variable neg_result : UNRESOLVED_sfixed (minimum(r'high, l'high)+1 downto
--- mins(r'low, l'low));
--- begin
--- if (l'length < 1 or r'length < 1 or
--- mins(r'low, r'low) /= r'low or mins(l'low, l'low) /= l'low) then
--- return NASF;
--- end if;
--- l_abs := to_ufixed (l);
--- r_abs := to_ufixed (r);
--- result := UNRESOLVED_sfixed (remainder (
--- l => l_abs,
--- r => r_abs,
--- round_style => round_style));
--- neg_result := -result;
--- if l(l'high) = '1' then
--- result := neg_result(result'range);
--- end if;
--- return result;
--- end function remainder;
-
--- -- modulo
--- -- ufixed (a downto b) mod ufixed (c downto d)
--- -- = ufixed (min(a,c) downto min(b, d))
--- function "mod" (
--- l, r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return modulo (l, r);
--- end function "mod";
-
--- -- sfixed (a downto b) mod sfixed (c downto d)
--- -- = sfixed (c downto min(b, d))
--- function "mod" (
--- l, r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return modulo(l, r);
--- end function "mod";
-
--- -- modulo
--- -- ufixed (a downto b) mod ufixed (c downto d)
--- -- = ufixed (min(a,c) downto min(b, d))
--- function modulo (
--- l, r : UNRESOLVED_ufixed; -- fixed point input
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_ufixed is
--- begin
--- return remainder(l => l,
--- r => r,
--- round_style => round_style,
--- guard_bits => guard_bits);
--- end function modulo;
-
--- -- sfixed (a downto b) mod sfixed (c downto d)
--- -- = sfixed (c downto min(b, d))
--- function modulo (
--- l, r : UNRESOLVED_sfixed; -- fixed point input
--- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
--- constant round_style : fixed_round_style_type := fixed_round_style;
--- constant guard_bits : NATURAL := fixed_guard_bits)
--- return UNRESOLVED_sfixed is
--- variable l_abs : UNRESOLVED_ufixed (l'range);
--- variable r_abs : UNRESOLVED_ufixed (r'range);
--- variable result : UNRESOLVED_sfixed (r'high downto
--- mine(r'low, l'low));
--- variable dresult : UNRESOLVED_sfixed (minimum(r'high, l'high)+1 downto
--- mins(r'low, l'low));
--- variable dresult_not_zero : BOOLEAN;
--- begin
--- if (l'length < 1 or r'length < 1 or
--- mins(r'low, r'low) /= r'low or mins(l'low, l'low) /= l'low) then
--- return NASF;
--- end if;
--- l_abs := to_ufixed (l);
--- r_abs := to_ufixed (r);
--- dresult := "0" & UNRESOLVED_sfixed(remainder (l => l_abs,
--- r => r_abs,
--- round_style => round_style));
--- if (to_s(dresult) = 0) then
--- dresult_not_zero := false;
--- else
--- dresult_not_zero := true;
--- end if;
--- if to_x01(l(l'high)) = '1' and to_x01(r(r'high)) = '0'
--- and dresult_not_zero then
--- result := resize (arg => r - dresult,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => overflow_style,
--- round_style => round_style);
--- elsif to_x01(l(l'high)) = '1' and to_x01(r(r'high)) = '1' then
--- result := resize (arg => -dresult,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => overflow_style,
--- round_style => round_style);
--- elsif to_x01(l(l'high)) = '0' and to_x01(r(r'high)) = '1'
--- and dresult_not_zero then
--- result := resize (arg => dresult + r,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => overflow_style,
--- round_style => round_style);
--- else
--- result := resize (arg => dresult,
--- left_index => result'high,
--- right_index => result'low,
--- overflow_style => overflow_style,
--- round_style => round_style);
--- end if;
--- return result;
--- end function modulo;
-
- -- Procedure for those who need an "accumulator" function
- procedure add_carry (
- L, R : in UNRESOLVED_ufixed;
- c_in : in STD_ULOGIC;
- result : out UNRESOLVED_ufixed;
- c_out : out STD_ULOGIC) is
- constant left_index : INTEGER := maximum(l'high, r'high)+1;
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (left_index-right_index
- downto 0);
- variable result_slv : UNSIGNED (left_index-right_index
- downto 0);
- variable cx : UNSIGNED (0 downto 0); -- Carry in
- begin
- if (l'length < 1 or r'length < 1) then
- result := NAUF;
- c_out := '0';
- else
- cx (0) := c_in;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- result_slv := lslv + rslv + cx;
- c_out := result_slv(left_index);
- result := to_fixed(result_slv (left_index-right_index-1 downto 0),
- left_index-1, right_index);
- end if;
- end procedure add_carry;
-
- procedure add_carry (
- L, R : in UNRESOLVED_sfixed;
- c_in : in STD_ULOGIC;
- result : out UNRESOLVED_sfixed;
- c_out : out STD_ULOGIC) is
- constant left_index : INTEGER := maximum(l'high, r'high)+1;
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (left_index-right_index
- downto 0);
- variable result_slv : SIGNED (left_index-right_index
- downto 0);
- variable cx : SIGNED (1 downto 0); -- Carry in
- begin
- if (l'length < 1 or r'length < 1) then
- result := NASF;
- c_out := '0';
- else
- cx (1) := '0';
- cx (0) := c_in;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- result_slv := lslv + rslv + cx;
- c_out := result_slv(left_index);
- result := to_fixed(result_slv (left_index-right_index-1 downto 0),
- left_index-1, right_index);
- end if;
- end procedure add_carry;
-
- -- Scales the result by a power of 2. Width of input = width of output with
- -- the decimal point moved.
- function scalb (y : UNRESOLVED_ufixed; N : INTEGER)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (y'high+N downto y'low+N);
- begin
- if y'length < 1 then
- return NAUF;
- else
- result := y;
- return result;
- end if;
- end function scalb;
-
- function scalb (y : UNRESOLVED_ufixed; N : SIGNED)
- return UNRESOLVED_ufixed is
- begin
- return scalb (y => y,
- N => to_integer(N));
- end function scalb;
-
- function scalb (y : UNRESOLVED_sfixed; N : INTEGER)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (y'high+N downto y'low+N);
- begin
- if y'length < 1 then
- return NASF;
- else
- result := y;
- return result;
- end if;
- end function scalb;
-
- function scalb (y : UNRESOLVED_sfixed; N : SIGNED)
- return UNRESOLVED_sfixed is
- begin
- return scalb (y => y,
- N => to_integer(N));
- end function scalb;
-
- function Is_Negative (arg : UNRESOLVED_sfixed) return BOOLEAN is
- begin
- if to_X01(arg(arg'high)) = '1' then
- return true;
- else
- return false;
- end if;
- end function Is_Negative;
-
- function find_rightmost (arg : UNRESOLVED_ufixed; y : STD_ULOGIC)
- return INTEGER is
- begin
- for_loop : for i in arg'reverse_range loop
- if \?=\ (arg(i), y) = '1' then
- return i;
- end if;
- end loop;
- return arg'high+1; -- return out of bounds 'high
- end function find_rightmost;
-
- function find_leftmost (arg : UNRESOLVED_ufixed; y : STD_ULOGIC)
- return INTEGER is
- begin
- for_loop : for i in arg'range loop
- if \?=\ (arg(i), y) = '1' then
- return i;
- end if;
- end loop;
- return arg'low-1; -- return out of bounds 'low
- end function find_leftmost;
-
- function find_rightmost (arg : UNRESOLVED_sfixed; y : STD_ULOGIC)
- return INTEGER is
- begin
- for_loop : for i in arg'reverse_range loop
- if \?=\ (arg(i), y) = '1' then
- return i;
- end if;
- end loop;
- return arg'high+1; -- return out of bounds 'high
- end function find_rightmost;
-
- function find_leftmost (arg : UNRESOLVED_sfixed; y : STD_ULOGIC)
- return INTEGER is
- begin
- for_loop : for i in arg'range loop
- if \?=\ (arg(i), y) = '1' then
- return i;
- end if;
- end loop;
- return arg'low-1; -- return out of bounds 'low
- end function find_leftmost;
-
- function "sll" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed is
- variable argslv : UNSIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- argslv := to_uns (arg);
- argslv := argslv sll COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "sll";
-
- function "srl" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed is
- variable argslv : UNSIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- argslv := to_uns (arg);
- argslv := argslv srl COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "srl";
-
- function "rol" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed is
- variable argslv : UNSIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- argslv := to_uns (arg);
- argslv := argslv rol COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "rol";
-
- function "ror" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed is
- variable argslv : UNSIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- argslv := to_uns (arg);
- argslv := argslv ror COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "ror";
-
- function "sla" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed is
- variable argslv : UNSIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- argslv := to_uns (arg);
- -- Arithmetic shift on an unsigned is a logical shift
- argslv := argslv sll COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "sla";
-
- function "sra" (ARG : UNRESOLVED_ufixed; COUNT : INTEGER)
- return UNRESOLVED_ufixed is
- variable argslv : UNSIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_ufixed (arg'range);
- begin
- argslv := to_uns (arg);
- -- Arithmetic shift on an unsigned is a logical shift
- argslv := argslv srl COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "sra";
-
- function "sll" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed is
- variable argslv : SIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- argslv := to_s (arg);
- argslv := argslv sll COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "sll";
-
- function "srl" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed is
- variable argslv : SIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- argslv := to_s (arg);
- argslv := argslv srl COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "srl";
-
- function "rol" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed is
- variable argslv : SIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- argslv := to_s (arg);
- argslv := argslv rol COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "rol";
-
- function "ror" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed is
- variable argslv : SIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- argslv := to_s (arg);
- argslv := argslv ror COUNT;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "ror";
-
- function "sla" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed is
- variable argslv : SIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- argslv := to_s (arg);
- if COUNT > 0 then
- -- Arithmetic shift left on a 2's complement number is a logic shift
- argslv := argslv sll COUNT;
- else
- argslv := argslv sra -COUNT;
- end if;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "sla";
-
- function "sra" (ARG : UNRESOLVED_sfixed; COUNT : INTEGER)
- return UNRESOLVED_sfixed is
- variable argslv : SIGNED (arg'length-1 downto 0);
- variable result : UNRESOLVED_sfixed (arg'range);
- begin
- argslv := to_s (arg);
- if COUNT > 0 then
- argslv := argslv sra COUNT;
- else
- -- Arithmetic shift left on a 2's complement number is a logic shift
- argslv := argslv sll -COUNT;
- end if;
- result := to_fixed (argslv, result'high, result'low);
- return result;
- end function "sra";
-
- -- Because some people want the older functions.
- function SHIFT_LEFT (ARG : UNRESOLVED_ufixed; COUNT : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- if (ARG'length < 1) then
- return NAUF;
- end if;
- return ARG sla COUNT;
- end function SHIFT_LEFT;
-
- function SHIFT_RIGHT (ARG : UNRESOLVED_ufixed; COUNT : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- if (ARG'length < 1) then
- return NAUF;
- end if;
- return ARG sra COUNT;
- end function SHIFT_RIGHT;
-
- function SHIFT_LEFT (ARG : UNRESOLVED_sfixed; COUNT : NATURAL)
- return UNRESOLVED_sfixed is
- begin
- if (ARG'length < 1) then
- return NASF;
- end if;
- return ARG sla COUNT;
- end function SHIFT_LEFT;
-
- function SHIFT_RIGHT (ARG : UNRESOLVED_sfixed; COUNT : NATURAL)
- return UNRESOLVED_sfixed is
- begin
- if (ARG'length < 1) then
- return NASF;
- end if;
- return ARG sra COUNT;
- end function SHIFT_RIGHT;
-
- ----------------------------------------------------------------------------
- -- logical functions
- ----------------------------------------------------------------------------
- function "not" (L : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- RESULT := not to_sulv(L);
- return to_ufixed(RESULT, L'high, L'low);
- end function "not";
-
- function "and" (L, R : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) and to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """and"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_ufixed(RESULT, L'high, L'low);
- end function "and";
-
- function "or" (L, R : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) or to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """or"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_ufixed(RESULT, L'high, L'low);
- end function "or";
-
- function "nand" (L, R : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) nand to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """nand"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_ufixed(RESULT, L'high, L'low);
- end function "nand";
-
- function "nor" (L, R : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) nor to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """nor"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_ufixed(RESULT, L'high, L'low);
- end function "nor";
-
- function "xor" (L, R : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) xor to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """xor"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_ufixed(RESULT, L'high, L'low);
- end function "xor";
-
- function "xnor" (L, R : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) xnor to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """xnor"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_ufixed(RESULT, L'high, L'low);
- end function "xnor";
-
- function "not" (L : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- RESULT := not to_sulv(L);
- return to_sfixed(RESULT, L'high, L'low);
- end function "not";
-
- function "and" (L, R : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) and to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """and"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_sfixed(RESULT, L'high, L'low);
- end function "and";
-
- function "or" (L, R : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) or to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """or"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_sfixed(RESULT, L'high, L'low);
- end function "or";
-
- function "nand" (L, R : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) nand to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """nand"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_sfixed(RESULT, L'high, L'low);
- end function "nand";
-
- function "nor" (L, R : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) nor to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """nor"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_sfixed(RESULT, L'high, L'low);
- end function "nor";
-
- function "xor" (L, R : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) xor to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """xor"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_sfixed(RESULT, L'high, L'low);
- end function "xor";
-
- function "xnor" (L, R : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- variable RESULT : STD_ULOGIC_VECTOR(L'length-1 downto 0); -- force downto
- begin
- if (L'high = R'high and L'low = R'low) then
- RESULT := to_sulv(L) xnor to_sulv(R);
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & """xnor"": Range error L'RANGE /= R'RANGE"
- severity warning;
- RESULT := (others => 'X');
- end if;
- return to_sfixed(RESULT, L'high, L'low);
- end function "xnor";
-
- -- Vector and std_ulogic functions, same as functions in numeric_std
- function "and" (L : STD_ULOGIC; R : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (R'range);
- begin
- for i in result'range loop
- result(i) := L and R(i);
- end loop;
- return result;
- end function "and";
-
- function "and" (L : UNRESOLVED_ufixed; R : STD_ULOGIC)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) and R;
- end loop;
- return result;
- end function "and";
-
- function "or" (L : STD_ULOGIC; R : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (R'range);
- begin
- for i in result'range loop
- result(i) := L or R(i);
- end loop;
- return result;
- end function "or";
-
- function "or" (L : UNRESOLVED_ufixed; R : STD_ULOGIC)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) or R;
- end loop;
- return result;
- end function "or";
-
- function "nand" (L : STD_ULOGIC; R : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (R'range);
- begin
- for i in result'range loop
- result(i) := L nand R(i);
- end loop;
- return result;
- end function "nand";
-
- function "nand" (L : UNRESOLVED_ufixed; R : STD_ULOGIC)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) nand R;
- end loop;
- return result;
- end function "nand";
-
- function "nor" (L : STD_ULOGIC; R : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (R'range);
- begin
- for i in result'range loop
- result(i) := L nor R(i);
- end loop;
- return result;
- end function "nor";
-
- function "nor" (L : UNRESOLVED_ufixed; R : STD_ULOGIC)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) nor R;
- end loop;
- return result;
- end function "nor";
-
- function "xor" (L : STD_ULOGIC; R : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (R'range);
- begin
- for i in result'range loop
- result(i) := L xor R(i);
- end loop;
- return result;
- end function "xor";
-
- function "xor" (L : UNRESOLVED_ufixed; R : STD_ULOGIC)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) xor R;
- end loop;
- return result;
- end function "xor";
-
- function "xnor" (L : STD_ULOGIC; R : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (R'range);
- begin
- for i in result'range loop
- result(i) := L xnor R(i);
- end loop;
- return result;
- end function "xnor";
-
- function "xnor" (L : UNRESOLVED_ufixed; R : STD_ULOGIC)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) xnor R;
- end loop;
- return result;
- end function "xnor";
-
- function "and" (L : STD_ULOGIC; R : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (R'range);
- begin
- for i in result'range loop
- result(i) := L and R(i);
- end loop;
- return result;
- end function "and";
-
- function "and" (L : UNRESOLVED_sfixed; R : STD_ULOGIC)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) and R;
- end loop;
- return result;
- end function "and";
-
- function "or" (L : STD_ULOGIC; R : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (R'range);
- begin
- for i in result'range loop
- result(i) := L or R(i);
- end loop;
- return result;
- end function "or";
-
- function "or" (L : UNRESOLVED_sfixed; R : STD_ULOGIC)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) or R;
- end loop;
- return result;
- end function "or";
-
- function "nand" (L : STD_ULOGIC; R : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (R'range);
- begin
- for i in result'range loop
- result(i) := L nand R(i);
- end loop;
- return result;
- end function "nand";
-
- function "nand" (L : UNRESOLVED_sfixed; R : STD_ULOGIC)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) nand R;
- end loop;
- return result;
- end function "nand";
-
- function "nor" (L : STD_ULOGIC; R : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (R'range);
- begin
- for i in result'range loop
- result(i) := L nor R(i);
- end loop;
- return result;
- end function "nor";
-
- function "nor" (L : UNRESOLVED_sfixed; R : STD_ULOGIC)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) nor R;
- end loop;
- return result;
- end function "nor";
-
- function "xor" (L : STD_ULOGIC; R : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (R'range);
- begin
- for i in result'range loop
- result(i) := L xor R(i);
- end loop;
- return result;
- end function "xor";
-
- function "xor" (L : UNRESOLVED_sfixed; R : STD_ULOGIC)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) xor R;
- end loop;
- return result;
- end function "xor";
-
- function "xnor" (L : STD_ULOGIC; R : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (R'range);
- begin
- for i in result'range loop
- result(i) := L xnor R(i);
- end loop;
- return result;
- end function "xnor";
-
- function "xnor" (L : UNRESOLVED_sfixed; R : STD_ULOGIC)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (L'range);
- begin
- for i in result'range loop
- result(i) := L(i) xnor R;
- end loop;
- return result;
- end function "xnor";
-
- -- Reduction operator_reduces
- function and_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC is
- begin
- return and_reduce (to_sulv(l));
- end function and_reduce;
-
- function nand_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC is
- begin
- return nand_reduce (to_sulv(l));
- end function nand_reduce;
-
- function or_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC is
- begin
- return or_reduce (to_sulv(l));
- end function or_reduce;
-
- function nor_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC is
- begin
- return nor_reduce (to_sulv(l));
- end function nor_reduce;
-
- function xor_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC is
- begin
- return xor_reduce (to_sulv(l));
- end function xor_reduce;
-
- function xnor_reduce (l : UNRESOLVED_ufixed) return STD_ULOGIC is
- begin
- return xnor_reduce (to_sulv(l));
- end function xnor_reduce;
-
- function and_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC is
- begin
- return and_reduce (to_sulv(l));
- end function and_reduce;
-
- function nand_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC is
- begin
- return nand_reduce (to_sulv(l));
- end function nand_reduce;
-
- function or_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC is
- begin
- return or_reduce (to_sulv(l));
- end function or_reduce;
-
- function nor_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC is
- begin
- return nor_reduce (to_sulv(l));
- end function nor_reduce;
-
- function xor_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC is
- begin
- return xor_reduce (to_sulv(l));
- end function xor_reduce;
-
- function xnor_reduce (l : UNRESOLVED_sfixed) return STD_ULOGIC is
- begin
- return xnor_reduce (to_sulv(l));
- end function xnor_reduce;
- -- End reduction operator_reduces
-
- function \?=\ (L, R : UNRESOLVED_ufixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin -- ?=
- if ((L'length < 1) or (R'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return \?=\ (lslv, rslv);
- end if;
- end function \?=\;
-
- function \?/=\ (L, R : UNRESOLVED_ufixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin -- ?/=
- if ((L'length < 1) or (R'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?/="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return \?/=\ (lslv, rslv);
- end if;
- end function \?/=\;
-
- function \?>\ (L, R : UNRESOLVED_ufixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin -- ?>
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?>"": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return \?>\ (lslv, rslv);
- end if;
- end function \?>\;
-
- function \?>=\ (L, R : UNRESOLVED_ufixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin -- ?>=
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?>="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return \?>=\ (lslv, rslv);
- end if;
- end function \?>=\;
-
- function \?<\ (L, R : UNRESOLVED_ufixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin -- ?<
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?<"": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return \?<\ (lslv, rslv);
- end if;
- end function \?<\;
-
- function \?<=\ (L, R : UNRESOLVED_ufixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin -- ?<=
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?<="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return \?<=\ (lslv, rslv);
- end if;
- end function \?<=\;
-
- function \?=\ (L, R : UNRESOLVED_sfixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin -- ?=
- if ((L'length < 1) or (R'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return \?=\ (lslv, rslv);
- end if;
- end function \?=\;
-
- function \?/=\ (L, R : UNRESOLVED_sfixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin -- ?/=
- if ((L'length < 1) or (R'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?/="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return \?/=\ (lslv, rslv);
- end if;
- end function \?/=\;
-
- function \?>\ (L, R : UNRESOLVED_sfixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin -- ?>
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?>"": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return \?>\ (lslv, rslv);
- end if;
- end function \?>\;
-
- function \?>=\ (L, R : UNRESOLVED_sfixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin -- ?>=
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?>="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return \?>=\ (lslv, rslv);
- end if;
- end function \?>=\;
-
- function \?<\ (L, R : UNRESOLVED_sfixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin -- ?<
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?<"": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return \?<\ (lslv, rslv);
- end if;
- end function \?<\;
-
- function \?<=\ (L, R : UNRESOLVED_sfixed) return STD_ULOGIC is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin -- ?<=
- if ((l'length < 1) or (r'length < 1)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """?<="": null detected, returning X"
- severity warning;
- return 'X';
- else
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return \?<=\ (lslv, rslv);
- end if;
- end function \?<=\;
-
- -- Match function, similar to "std_match" from numeric_std
- function std_match (L, R : UNRESOLVED_ufixed) return BOOLEAN is
- begin
- if (L'high = R'high and L'low = R'low) then
- return std_match(to_sulv(L), to_sulv(R));
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & "STD_MATCH: L'RANGE /= R'RANGE, returning FALSE"
- severity warning;
- return false;
- end if;
- end function std_match;
-
- function std_match (L, R : UNRESOLVED_sfixed) return BOOLEAN is
- begin
- if (L'high = R'high and L'low = R'low) then
- return std_match(to_sulv(L), to_sulv(R));
- else
- assert NO_WARNING
- report "fixed_pkg:"
- & "STD_MATCH: L'RANGE /= R'RANGE, returning FALSE"
- severity warning;
- return false;
- end if;
- end function std_match;
-
- -- compare functions
- function "=" (
- l, r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """="": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """="": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return lslv = rslv;
- end function "=";
-
- function "=" (
- l, r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """="": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """="": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return lslv = rslv;
- end function "=";
-
- function "/=" (
- l, r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """/="": null argument detected, returning TRUE"
- severity warning;
- return true;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """/="": metavalue detected, returning TRUE"
- severity warning;
- return true;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return lslv /= rslv;
- end function "/=";
-
- function "/=" (
- l, r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """/="": null argument detected, returning TRUE"
- severity warning;
- return true;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """/="": metavalue detected, returning TRUE"
- severity warning;
- return true;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return lslv /= rslv;
- end function "/=";
-
- function ">" (
- l, r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>"": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>"": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return lslv > rslv;
- end function ">";
-
- function ">" (
- l, r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>"": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>"": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return lslv > rslv;
- end function ">";
-
- function "<" (
- l, r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<"": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<"": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return lslv < rslv;
- end function "<";
-
- function "<" (
- l, r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<"": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<"": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return lslv < rslv;
- end function "<";
-
- function ">=" (
- l, r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>="": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>="": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return lslv >= rslv;
- end function ">=";
-
- function ">=" (
- l, r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>="": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """>="": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return lslv >= rslv;
- end function ">=";
-
- function "<=" (
- l, r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- variable lslv, rslv : UNSIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<="": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<="": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_uns (lresize);
- rslv := to_uns (rresize);
- return lslv <= rslv;
- end function "<=";
-
- function "<=" (
- l, r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- variable lslv, rslv : SIGNED (lresize'length-1 downto 0);
- begin
- if (l'length < 1 or r'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<="": null argument detected, returning FALSE"
- severity warning;
- return false;
- elsif (Is_X(l) or Is_X(r)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & """<="": metavalue detected, returning FALSE"
- severity warning;
- return false;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- lslv := to_s (lresize);
- rslv := to_s (rresize);
- return lslv <= rslv;
- end function "<=";
-
- -- overloads of the default maximum and minimum functions
- function maximum (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- begin
- if (l'length < 1 or r'length < 1) then
- return NAUF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- if lresize > rresize then return lresize;
- else return rresize;
- end if;
- end function maximum;
-
- function maximum (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- begin
- if (l'length < 1 or r'length < 1) then
- return NASF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- if lresize > rresize then return lresize;
- else return rresize;
- end if;
- end function maximum;
-
- function minimum (l, r : UNRESOLVED_ufixed) return UNRESOLVED_ufixed is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_ufixed (left_index downto right_index);
- begin
- if (l'length < 1 or r'length < 1) then
- return NAUF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- if lresize > rresize then return rresize;
- else return lresize;
- end if;
- end function minimum;
-
- function minimum (l, r : UNRESOLVED_sfixed) return UNRESOLVED_sfixed is
- constant left_index : INTEGER := maximum(l'high, r'high);
- constant right_index : INTEGER := mins(l'low, r'low);
- variable lresize, rresize : UNRESOLVED_sfixed (left_index downto right_index);
- begin
- if (l'length < 1 or r'length < 1) then
- return NASF;
- end if;
- lresize := resize (l, left_index, right_index);
- rresize := resize (r, left_index, right_index);
- if lresize > rresize then return rresize;
- else return lresize;
- end if;
- end function minimum;
-
- function to_ufixed (
- arg : NATURAL; -- integer
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mins (right_index, right_index); -- catch literals
- variable result : UNRESOLVED_ufixed (left_index downto fw);
- variable sresult : UNRESOLVED_ufixed (left_index downto 0) :=
- (others => '0'); -- integer portion
- variable argx : NATURAL; -- internal version of arg
- begin
- if (result'length < 1) then
- return NAUF;
- end if;
- if arg /= 0 then
- argx := arg;
- for I in 0 to sresult'left loop
- if (argx mod 2) = 0 then
- sresult(I) := '0';
- else
- sresult(I) := '1';
- end if;
- argx := argx/2;
- end loop;
- if argx /= 0 then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_UFIXED(NATURAL): vector truncated"
- severity warning;
- if overflow_style = fixed_saturate then
- return saturate (left_index, right_index);
- end if;
- end if;
- result := resize (arg => sresult,
- left_index => left_index,
- right_index => right_index,
- round_style => round_style,
- overflow_style => overflow_style);
- else
- result := (others => '0');
- end if;
- return result;
- end function to_ufixed;
-
- function to_sfixed (
- arg : INTEGER; -- integer
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mins (right_index, right_index); -- catch literals
- variable result : UNRESOLVED_sfixed (left_index downto fw);
- variable sresult : UNRESOLVED_sfixed (left_index downto 0) :=
- (others => '0'); -- integer portion
- variable argx : INTEGER; -- internal version of arg
- variable sign : STD_ULOGIC; -- sign of input
- begin
- if (result'length < 1) then -- null range
- return NASF;
- end if;
- if arg /= 0 then
- if (arg < 0) then
- sign := '1';
- argx := -(arg + 1);
- else
- sign := '0';
- argx := arg;
- end if;
- for I in 0 to sresult'left loop
- if (argx mod 2) = 0 then
- sresult(I) := sign;
- else
- sresult(I) := not sign;
- end if;
- argx := argx/2;
- end loop;
- if argx /= 0 or left_index < 0 or sign /= sresult(sresult'left) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_SFIXED(INTEGER): vector truncated"
- severity warning;
- if overflow_style = fixed_saturate then -- saturate
- if arg < 0 then
- result := not saturate (result'high, result'low); -- underflow
- else
- result := saturate (result'high, result'low); -- overflow
- end if;
- return result;
- end if;
- end if;
- result := resize (arg => sresult,
- left_index => left_index,
- right_index => right_index,
- round_style => round_style,
- overflow_style => overflow_style);
- else
- result := (others => '0');
- end if;
- return result;
- end function to_sfixed;
-
- function to_ufixed (
- arg : REAL; -- real
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits) -- # of guard bits
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mins (right_index, right_index); -- catch literals
- variable result : UNRESOLVED_ufixed (left_index downto fw) :=
- (others => '0');
- variable Xresult : UNRESOLVED_ufixed (left_index downto
- fw-guard_bits) :=
- (others => '0');
- variable presult : REAL;
--- variable overflow_needed : BOOLEAN;
- begin
- -- If negative or null range, return.
- if (left_index < fw) then
- return NAUF;
- end if;
- if (arg < 0.0) then
- report "fixed_pkg:"
- & "TO_UFIXED: Negative argument passed "
- & REAL'image(arg) severity error;
- return result;
- end if;
- presult := arg;
- if presult >= (2.0**(left_index+1)) then
- assert NO_WARNING report "fixed_pkg:"
- & "TO_UFIXED(REAL): vector truncated"
- severity warning;
- if overflow_style = fixed_wrap then
- presult := presult mod (2.0**(left_index+1)); -- wrap
- else
- return saturate (result'high, result'low);
- end if;
- end if;
- for i in Xresult'range loop
- if presult >= 2.0**i then
- Xresult(i) := '1';
- presult := presult - 2.0**i;
- else
- Xresult(i) := '0';
- end if;
- end loop;
- if guard_bits > 0 and round_style = fixed_round then
- result := round_fixed (arg => Xresult (left_index
- downto right_index),
- remainder => Xresult (right_index-1 downto
- right_index-guard_bits),
- overflow_style => overflow_style);
- else
- result := Xresult (result'range);
- end if;
- return result;
- end function to_ufixed;
-
- function to_sfixed (
- arg : REAL; -- real
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits) -- # of guard bits
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mins (right_index, right_index); -- catch literals
- variable result : UNRESOLVED_sfixed (left_index downto fw) :=
- (others => '0');
- variable Xresult : UNRESOLVED_sfixed (left_index+1 downto fw-guard_bits) :=
- (others => '0');
- variable presult : REAL;
- begin
- if (left_index < fw) then -- null range
- return NASF;
- end if;
- if (arg >= (2.0**left_index) or arg < -(2.0**left_index)) then
- assert NO_WARNING report "fixed_pkg:"
- & "TO_SFIXED(REAL): vector truncated"
- severity warning;
- if overflow_style = fixed_saturate then
- if arg < 0.0 then -- saturate
- result := not saturate (result'high, result'low); -- underflow
- else
- result := saturate (result'high, result'low); -- overflow
- end if;
- return result;
- else
- presult := abs(arg) mod (2.0**(left_index+1)); -- wrap
- end if;
- else
- presult := abs(arg);
- end if;
- for i in Xresult'range loop
- if presult >= 2.0**i then
- Xresult(i) := '1';
- presult := presult - 2.0**i;
- else
- Xresult(i) := '0';
- end if;
- end loop;
- if arg < 0.0 then
- Xresult := to_fixed(-to_s(Xresult), Xresult'high, Xresult'low);
- end if;
- if guard_bits > 0 and round_style = fixed_round then
- result := round_fixed (arg => Xresult (left_index
- downto right_index),
- remainder => Xresult (right_index-1 downto
- right_index-guard_bits),
- overflow_style => overflow_style);
- else
- result := Xresult (result'range);
- end if;
- return result;
- end function to_sfixed;
-
- function to_ufixed (
- arg : UNSIGNED; -- unsigned
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed is
- constant ARG_LEFT : INTEGER := ARG'length-1;
- alias XARG : UNSIGNED(ARG_LEFT downto 0) is ARG;
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- begin
- if arg'length < 1 or (left_index < right_index) then
- return NAUF;
- end if;
- result := resize (arg => UNRESOLVED_ufixed (XARG),
- left_index => left_index,
- right_index => right_index,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end function to_ufixed;
-
- -- converted version
- function to_ufixed (
- arg : UNSIGNED) -- unsigned
- return UNRESOLVED_ufixed is
- constant ARG_LEFT : INTEGER := ARG'length-1;
- alias XARG : UNSIGNED(ARG_LEFT downto 0) is ARG;
- begin
- if arg'length < 1 then
- return NAUF;
- end if;
- return UNRESOLVED_ufixed(xarg);
- end function to_ufixed;
-
- function to_sfixed (
- arg : SIGNED; -- signed
- constant left_index : INTEGER; -- left index (high index)
- constant right_index : INTEGER := 0; -- right index
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed is
- constant ARG_LEFT : INTEGER := ARG'length-1;
- alias XARG : SIGNED(ARG_LEFT downto 0) is ARG;
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- begin
- if arg'length < 1 or (left_index < right_index) then
- return NASF;
- end if;
- result := resize (arg => UNRESOLVED_sfixed (XARG),
- left_index => left_index,
- right_index => right_index,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end function to_sfixed;
-
- -- converted version
- function to_sfixed (
- arg : SIGNED) -- signed
- return UNRESOLVED_sfixed is
- constant ARG_LEFT : INTEGER := ARG'length-1;
- alias XARG : SIGNED(ARG_LEFT downto 0) is ARG;
- begin
- if arg'length < 1 then
- return NASF;
- end if;
- return UNRESOLVED_sfixed(xarg);
- end function to_sfixed;
-
- function to_sfixed (arg : UNRESOLVED_ufixed) return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (arg'high+1 downto arg'low);
- begin
- if arg'length < 1 then
- return NASF;
- end if;
- result (arg'high downto arg'low) := UNRESOLVED_sfixed(cleanvec(arg));
- result (arg'high+1) := '0';
- return result;
- end function to_sfixed;
-
- -- Because of the fairly complicated sizing rules in the fixed point
- -- packages these functions are provided to compute the result ranges
- -- Example:
- -- signal uf1 : ufixed (3 downto -3);
- -- signal uf2 : ufixed (4 downto -2);
- -- signal uf1multuf2 : ufixed (ufixed_high (3, -3, '*', 4, -2) downto
- -- ufixed_low (3, -3, '*', 4, -2));
- -- uf1multuf2 <= uf1 * uf2;
- -- Valid characters: '+', '-', '*', '/', 'r' or 'R' (rem), 'm' or 'M' (mod),
- -- '1' (reciprocal), 'A', 'a' (abs), 'N', 'n' (-sfixed)
- function ufixed_high (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER is
- begin
- case operation is
- when '+'| '-' => return maximum (left_index, left_index2) + 1;
- when '*' => return left_index + left_index2 + 1;
- when '/' => return left_index - right_index2;
- when '1' => return -right_index; -- reciprocal
- when 'R'|'r' => return mins (left_index, left_index2); -- "rem"
- when 'M'|'m' => return mins (left_index, left_index2); -- "mod"
- when others => return left_index; -- For abs and default
- end case;
- end function ufixed_high;
-
- function ufixed_low (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER is
- begin
- case operation is
- when '+'| '-' => return mins (right_index, right_index2);
- when '*' => return right_index + right_index2;
- when '/' => return right_index - left_index2 - 1;
- when '1' => return -left_index - 1; -- reciprocal
- when 'R'|'r' => return mins (right_index, right_index2); -- "rem"
- when 'M'|'m' => return mins (right_index, right_index2); -- "mod"
- when others => return right_index; -- for abs and default
- end case;
- end function ufixed_low;
-
- function sfixed_high (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER is
- begin
- case operation is
- when '+'| '-' => return maximum (left_index, left_index2) + 1;
- when '*' => return left_index + left_index2 + 1;
- when '/' => return left_index - right_index2 + 1;
- when '1' => return -right_index + 1; -- reciprocal
- when 'R'|'r' => return mins (left_index, left_index2); -- "rem"
- when 'M'|'m' => return left_index2; -- "mod"
- when 'A'|'a' => return left_index + 1; -- "abs"
- when 'N'|'n' => return left_index + 1; -- -sfixed
- when others => return left_index;
- end case;
- end function sfixed_high;
-
- function sfixed_low (left_index, right_index : INTEGER;
- operation : CHARACTER := 'X';
- left_index2, right_index2 : INTEGER := 0)
- return INTEGER is
- begin
- case operation is
- when '+'| '-' => return mins (right_index, right_index2);
- when '*' => return right_index + right_index2;
- when '/' => return right_index - left_index2;
- when '1' => return -left_index; -- reciprocal
- when 'R'|'r' => return mins (right_index, right_index2); -- "rem"
- when 'M'|'m' => return mins (right_index, right_index2); -- "mod"
- when others => return right_index; -- default for abs, neg and default
- end case;
- end function sfixed_low;
-
- -- Same as above, but using the "size_res" input only for their ranges:
- -- signal uf1multuf2 : ufixed (ufixed_high (uf1, '*', uf2) downto
- -- ufixed_low (uf1, '*', uf2));
- -- uf1multuf2 <= uf1 * uf2;
- function ufixed_high (size_res : UNRESOLVED_ufixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_ufixed)
- return INTEGER is
- begin
- return ufixed_high (left_index => size_res'high,
- right_index => size_res'low,
- operation => operation,
- left_index2 => size_res2'high,
- right_index2 => size_res2'low);
- end function ufixed_high;
-
- function ufixed_low (size_res : UNRESOLVED_ufixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_ufixed)
- return INTEGER is
- begin
- return ufixed_low (left_index => size_res'high,
- right_index => size_res'low,
- operation => operation,
- left_index2 => size_res2'high,
- right_index2 => size_res2'low);
- end function ufixed_low;
-
- function sfixed_high (size_res : UNRESOLVED_sfixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_sfixed)
- return INTEGER is
- begin
- return sfixed_high (left_index => size_res'high,
- right_index => size_res'low,
- operation => operation,
- left_index2 => size_res2'high,
- right_index2 => size_res2'low);
- end function sfixed_high;
-
- function sfixed_low (size_res : UNRESOLVED_sfixed;
- operation : CHARACTER := 'X';
- size_res2 : UNRESOLVED_sfixed)
- return INTEGER is
- begin
- return sfixed_low (left_index => size_res'high,
- right_index => size_res'low,
- operation => operation,
- left_index2 => size_res2'high,
- right_index2 => size_res2'low);
- end function sfixed_low;
-
- -- purpose: returns a saturated number
- function saturate (
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed is
- constant sat : UNRESOLVED_ufixed (left_index downto right_index) :=
- (others => '1');
- begin
- return sat;
- end function saturate;
-
- -- purpose: returns a saturated number
- function saturate (
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed is
- variable sat : UNRESOLVED_sfixed (left_index downto right_index) :=
- (others => '1');
- begin
- -- saturate positive, to saturate negative, just do "not saturate()"
- sat (left_index) := '0';
- return sat;
- end function saturate;
-
- function saturate (
- size_res : UNRESOLVED_ufixed) -- only the size of this is used
- return UNRESOLVED_ufixed is
- begin
- return saturate (size_res'high, size_res'low);
- end function saturate;
-
- function saturate (
- size_res : UNRESOLVED_sfixed) -- only the size of this is used
- return UNRESOLVED_sfixed is
- begin
- return saturate (size_res'high, size_res'low);
- end function saturate;
-
- -- As a concession to those who use a graphical DSP environment,
- -- these functions take parameters in those tools format and create
- -- fixed point numbers. These functions are designed to convert from
- -- a std_logic_vector to the VHDL fixed point format using the conventions
- -- of these packages. In a pure VHDL environment you should use the
- -- "to_ufixed" and "to_sfixed" routines.
- -- Unsigned fixed point
- function to_UFix (
- arg : STD_ULOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (width-fraction-1 downto -fraction);
- begin
- if (arg'length /= result'length) then
- report "fixed_pkg:"
- & "TO_UFIX (STD_ULOGIC_VECTOR) "
- & "Vector lengths do not match. Input length is "
- & INTEGER'image(arg'length) & " and output will be "
- & INTEGER'image(result'length) & " wide."
- severity error;
- return NAUF;
- else
- result := to_ufixed (arg, result'high, result'low);
- return result;
- end if;
- end function to_UFix;
-
- -- signed fixed point
- function to_SFix (
- arg : STD_ULOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (width-fraction-1 downto -fraction);
- begin
- if (arg'length /= result'length) then
- report "fixed_pkg:"
- & "TO_SFIX (STD_ULOGIC_VECTOR) "
- & "Vector lengths do not match. Input length is "
- & INTEGER'image(arg'length) & " and output will be "
- & INTEGER'image(result'length) & " wide."
- severity error;
- return NASF;
- else
- result := to_sfixed (arg, result'high, result'low);
- return result;
- end if;
- end function to_SFix;
-
- -- finding the bounds of a number. These functions can be used like this:
- -- signal xxx : ufixed (7 downto -3);
- -- -- Which is the same as "ufixed (UFix_high (11,3) downto UFix_low(11,3))"
- -- signal yyy : ufixed (UFix_high (11, 3, "+", 11, 3)
- -- downto UFix_low(11, 3, "+", 11, 3));
- -- Where "11" is the width of xxx (xxx'length),
- -- and 3 is the lower bound (abs (xxx'low))
- -- In a pure VHDL environment use "ufixed_high" and "ufixed_low"
- function ufix_high (
- width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER is
- begin
- return ufixed_high (left_index => width - 1 - fraction,
- right_index => -fraction,
- operation => operation,
- left_index2 => width2 - 1 - fraction2,
- right_index2 => -fraction2);
- end function ufix_high;
-
- function ufix_low (
- width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER is
- begin
- return ufixed_low (left_index => width - 1 - fraction,
- right_index => -fraction,
- operation => operation,
- left_index2 => width2 - 1 - fraction2,
- right_index2 => -fraction2);
- end function ufix_low;
-
- function sfix_high (
- width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER is
- begin
- return sfixed_high (left_index => width - fraction,
- right_index => -fraction,
- operation => operation,
- left_index2 => width2 - fraction2,
- right_index2 => -fraction2);
- end function sfix_high;
-
- function sfix_low (
- width, fraction : NATURAL;
- operation : CHARACTER := 'X';
- width2, fraction2 : NATURAL := 0)
- return INTEGER is
- begin
- return sfixed_low (left_index => width - fraction,
- right_index => -fraction,
- operation => operation,
- left_index2 => width2 - fraction2,
- right_index2 => -fraction2);
- end function sfix_low;
-
- function to_unsigned (
- arg : UNRESOLVED_ufixed; -- ufixed point input
- constant size : NATURAL; -- length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNSIGNED is
- begin
- return to_uns(resize (arg => arg,
- left_index => size-1,
- right_index => 0,
- round_style => round_style,
- overflow_style => overflow_style));
- end function to_unsigned;
-
- function to_unsigned (
- arg : UNRESOLVED_ufixed; -- ufixed point input
- size_res : UNSIGNED; -- length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNSIGNED is
- begin
- return to_unsigned (arg => arg,
- size => size_res'length,
- round_style => round_style,
- overflow_style => overflow_style);
- end function to_unsigned;
-
- function to_signed (
- arg : UNRESOLVED_sfixed; -- sfixed point input
- constant size : NATURAL; -- length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return SIGNED is
- begin
- return to_s(resize (arg => arg,
- left_index => size-1,
- right_index => 0,
- round_style => round_style,
- overflow_style => overflow_style));
- end function to_signed;
-
- function to_signed (
- arg : UNRESOLVED_sfixed; -- sfixed point input
- size_res : SIGNED; -- used for length of output
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return SIGNED is
- begin
- return to_signed (arg => arg,
- size => size_res'length,
- round_style => round_style,
- overflow_style => overflow_style);
- end function to_signed;
-
- function to_real (
- arg : UNRESOLVED_ufixed) -- ufixed point input
- return REAL is
- constant left_index : INTEGER := arg'high;
- constant right_index : INTEGER := arg'low;
- variable result : REAL; -- result
- variable arg_int : UNRESOLVED_ufixed (left_index downto right_index);
- begin
- if (arg'length < 1) then
- return 0.0;
- end if;
- arg_int := to_x01(cleanvec(arg));
- if (Is_X(arg_int)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_REAL (ufixed): metavalue detected, returning 0.0"
- severity warning;
- return 0.0;
- end if;
- result := 0.0;
- for i in arg_int'range loop
- if (arg_int(i) = '1') then
- result := result + (2.0**i);
- end if;
- end loop;
- return result;
- end function to_real;
-
- function to_real (
- arg : UNRESOLVED_sfixed) -- ufixed point input
- return REAL is
- constant left_index : INTEGER := arg'high;
- constant right_index : INTEGER := arg'low;
- variable result : REAL; -- result
- variable arg_int : UNRESOLVED_sfixed (left_index downto right_index);
- -- unsigned version of argument
- variable arg_uns : UNRESOLVED_ufixed (left_index downto right_index);
- -- absolute of argument
- begin
- if (arg'length < 1) then
- return 0.0;
- end if;
- arg_int := to_x01(cleanvec(arg));
- if (Is_X(arg_int)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_REAL (sfixed): metavalue detected, returning 0.0"
- severity warning;
- return 0.0;
- end if;
- arg_uns := to_ufixed (arg_int);
- result := to_real (arg_uns);
- if (arg_int(arg_int'high) = '1') then
- result := -result;
- end if;
- return result;
- end function to_real;
-
- function to_integer (
- arg : UNRESOLVED_ufixed; -- fixed point input
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return NATURAL is
- constant left_index : INTEGER := arg'high;
- variable arg_uns : UNSIGNED (left_index+1 downto 0)
- := (others => '0');
- begin
- if (arg'length < 1) then
- return 0;
- end if;
- if (Is_X (arg)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_INTEGER (ufixed): metavalue detected, returning 0"
- severity warning;
- return 0;
- end if;
- if (left_index < -1) then
- return 0;
- end if;
- arg_uns := to_uns(resize (arg => arg,
- left_index => arg_uns'high,
- right_index => 0,
- round_style => round_style,
- overflow_style => overflow_style));
- return to_integer (arg_uns);
- end function to_integer;
-
- function to_integer (
- arg : UNRESOLVED_sfixed; -- fixed point input
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return INTEGER is
- constant left_index : INTEGER := arg'high;
- constant right_index : INTEGER := arg'low;
- variable arg_s : SIGNED (left_index+1 downto 0);
- begin
- if (arg'length < 1) then
- return 0;
- end if;
- if (Is_X (arg)) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_INTEGER (sfixed): metavalue detected, returning 0"
- severity warning;
- return 0;
- end if;
- if (left_index < -1) then
- return 0;
- end if;
- arg_s := to_s(resize (arg => arg,
- left_index => arg_s'high,
- right_index => 0,
- round_style => round_style,
- overflow_style => overflow_style));
- return to_integer (arg_s);
- end function to_integer;
-
- function to_01 (
- s : UNRESOLVED_ufixed; -- ufixed point input
- constant XMAP : STD_ULOGIC := '0') -- Map x to
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (s'range); -- result
- begin
- if (s'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_01(ufixed): null detected, returning NULL"
- severity warning;
- return NAUF;
- end if;
- return to_fixed (to_01(to_uns(s), XMAP), s'high, s'low);
- end function to_01;
-
- function to_01 (
- s : UNRESOLVED_sfixed; -- sfixed point input
- constant XMAP : STD_ULOGIC := '0') -- Map x to
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (s'range);
- begin
- if (s'length < 1) then
- assert NO_WARNING
- report "fixed_pkg:"
- & "TO_01(sfixed): null detected, returning NULL"
- severity warning;
- return NASF;
- end if;
- return to_fixed (to_01(to_s(s), XMAP), s'high, s'low);
- end function to_01;
-
- function Is_X (
- arg : UNRESOLVED_ufixed)
- return BOOLEAN is
- variable argslv : STD_ULOGIC_VECTOR (arg'length-1 downto 0); -- slv
- begin
- argslv := to_sulv(arg);
- return Is_X (argslv);
- end function Is_X;
-
- function Is_X (
- arg : UNRESOLVED_sfixed)
- return BOOLEAN is
- variable argslv : STD_ULOGIC_VECTOR (arg'length-1 downto 0); -- slv
- begin
- argslv := to_sulv(arg);
- return Is_X (argslv);
- end function Is_X;
-
- function To_X01 (
- arg : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- begin
- return to_ufixed (To_X01(to_sulv(arg)), arg'high, arg'low);
- end function To_X01;
-
- function to_X01 (
- arg : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return to_sfixed (To_X01(to_sulv(arg)), arg'high, arg'low);
- end function To_X01;
-
- function To_X01Z (
- arg : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- begin
- return to_ufixed (To_X01Z(to_sulv(arg)), arg'high, arg'low);
- end function To_X01Z;
-
- function to_X01Z (
- arg : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return to_sfixed (To_X01Z(to_sulv(arg)), arg'high, arg'low);
- end function To_X01Z;
-
- function To_UX01 (
- arg : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- begin
- return to_ufixed (To_UX01(to_sulv(arg)), arg'high, arg'low);
- end function To_UX01;
-
- function to_UX01 (
- arg : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return to_sfixed (To_UX01(to_sulv(arg)), arg'high, arg'low);
- end function To_UX01;
-
- function resize (
- arg : UNRESOLVED_ufixed; -- input
- constant left_index : INTEGER; -- integer portion
- constant right_index : INTEGER; -- size of fraction
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed is
- constant arghigh : INTEGER := maximum (arg'high, arg'low);
- constant arglow : INTEGER := mine (arg'high, arg'low);
- variable invec : UNRESOLVED_ufixed (arghigh downto arglow);
- variable result : UNRESOLVED_ufixed(left_index downto right_index) :=
- (others => '0');
- variable needs_rounding : BOOLEAN := false;
- begin -- resize
- if (arg'length < 1) or (result'length < 1) then
- return NAUF;
- elsif (invec'length < 1) then
- return result; -- string literal value
- else
- invec := cleanvec(arg);
- if (right_index > arghigh) then -- return top zeros
- needs_rounding := (round_style = fixed_round) and
- (right_index = arghigh+1);
- elsif (left_index < arglow) then -- return overflow
- if (overflow_style = fixed_saturate) and
- (or_reduce(to_sulv(invec)) = '1') then
- result := saturate (result'high, result'low); -- saturate
- end if;
- elsif (arghigh > left_index) then
- -- wrap or saturate?
- if (overflow_style = fixed_saturate and
- or_reduce (to_sulv(invec(arghigh downto left_index+1))) = '1')
- then
- result := saturate (result'high, result'low); -- saturate
- else
- if (arglow >= right_index) then
- result (left_index downto arglow) :=
- invec(left_index downto arglow);
- else
- result (left_index downto right_index) :=
- invec (left_index downto right_index);
- needs_rounding := (round_style = fixed_round); -- round
- end if;
- end if;
- else -- arghigh <= integer width
- if (arglow >= right_index) then
- result (arghigh downto arglow) := invec;
- else
- result (arghigh downto right_index) :=
- invec (arghigh downto right_index);
- needs_rounding := (round_style = fixed_round); -- round
- end if;
- end if;
- -- Round result
- if needs_rounding then
- result := round_fixed (arg => result,
- remainder => invec (right_index-1
- downto arglow),
- overflow_style => overflow_style);
- end if;
- return result;
- end if;
- end function resize;
-
- function resize (
- arg : UNRESOLVED_sfixed; -- input
- constant left_index : INTEGER; -- integer portion
- constant right_index : INTEGER; -- size of fraction
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed is
- constant arghigh : INTEGER := maximum (arg'high, arg'low);
- constant arglow : INTEGER := mine (arg'high, arg'low);
- variable invec : UNRESOLVED_sfixed (arghigh downto arglow);
- variable result : UNRESOLVED_sfixed(left_index downto right_index) :=
- (others => '0');
- variable reduced : STD_ULOGIC;
- variable needs_rounding : BOOLEAN := false; -- rounding
- begin -- resize
- if (arg'length < 1) or (result'length < 1) then
- return NASF;
- elsif (invec'length < 1) then
- return result; -- string literal value
- else
- invec := cleanvec(arg);
- if (right_index > arghigh) then -- return top zeros
- if (arg'low /= INTEGER'low) then -- check for a literal
- result := (others => arg(arghigh)); -- sign extend
- end if;
- needs_rounding := (round_style = fixed_round) and
- (right_index = arghigh+1);
- elsif (left_index < arglow) then -- return overflow
- if (overflow_style = fixed_saturate) then
- reduced := or_reduce (to_sulv(invec));
- if (reduced = '1') then
- if (invec(arghigh) = '0') then
- -- saturate POSITIVE
- result := saturate (result'high, result'low);
- else
- -- saturate negative
- result := not saturate (result'high, result'low);
- end if;
- -- else return 0 (input was 0)
- end if;
- -- else return 0 (wrap)
- end if;
- elsif (arghigh > left_index) then
- if (invec(arghigh) = '0') then
- reduced := or_reduce (to_sulv(invec(arghigh-1 downto
- left_index)));
- if overflow_style = fixed_saturate and reduced = '1' then
- -- saturate positive
- result := saturate (result'high, result'low);
- else
- if (right_index > arglow) then
- result := invec (left_index downto right_index);
- needs_rounding := (round_style = fixed_round);
- else
- result (left_index downto arglow) :=
- invec (left_index downto arglow);
- end if;
- end if;
- else
- reduced := and_reduce (to_sulv(invec(arghigh-1 downto
- left_index)));
- if overflow_style = fixed_saturate and reduced = '0' then
- result := not saturate (result'high, result'low);
- else
- if (right_index > arglow) then
- result := invec (left_index downto right_index);
- needs_rounding := (round_style = fixed_round);
- else
- result (left_index downto arglow) :=
- invec (left_index downto arglow);
- end if;
- end if;
- end if;
- else -- arghigh <= integer width
- if (arglow >= right_index) then
- result (arghigh downto arglow) := invec;
- else
- result (arghigh downto right_index) :=
- invec (arghigh downto right_index);
- needs_rounding := (round_style = fixed_round); -- round
- end if;
- if (left_index > arghigh) then -- sign extend
- result(left_index downto arghigh+1) := (others => invec(arghigh));
- end if;
- end if;
- -- Round result
- if (needs_rounding) then
- result := round_fixed (arg => result,
- remainder => invec (right_index-1
- downto arglow),
- overflow_style => overflow_style);
- end if;
- return result;
- end if;
- end function resize;
-
- -- size_res functions
- -- These functions compute the size from a passed variable named "size_res"
- -- The only part of this variable used it it's size, it is never passed
- -- to a lower level routine.
- function to_ufixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_ufixed) -- for size only
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_ufixed (size_res'left downto fw);
- begin
- if (result'length < 1 or arg'length < 1) then
- return NAUF;
- else
- result := to_ufixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low);
- return result;
- end if;
- end function to_ufixed;
-
- function to_sfixed (
- arg : STD_ULOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_sfixed) -- for size only
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_sfixed (size_res'left downto fw);
- begin
- if (result'length < 1 or arg'length < 1) then
- return NASF;
- else
- result := to_sfixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low);
- return result;
- end if;
- end function to_sfixed;
-
- function to_ufixed (
- arg : NATURAL; -- integer
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_ufixed (size_res'left downto fw);
- begin
- if (result'length < 1) then
- return NAUF;
- else
- result := to_ufixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function to_ufixed;
-
- function to_sfixed (
- arg : INTEGER; -- integer
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_sfixed (size_res'left downto fw);
- begin
- if (result'length < 1) then
- return NASF;
- else
- result := to_sfixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function to_sfixed;
-
- function to_ufixed (
- arg : REAL; -- real
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits) -- # of guard bits
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_ufixed (size_res'left downto fw);
- begin
- if (result'length < 1) then
- return NAUF;
- else
- result := to_ufixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- guard_bits => guard_bits,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function to_ufixed;
-
- function to_sfixed (
- arg : REAL; -- real
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style;
- constant guard_bits : NATURAL := fixed_guard_bits) -- # of guard bits
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_sfixed (size_res'left downto fw);
- begin
- if (result'length < 1) then
- return NASF;
- else
- result := to_sfixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- guard_bits => guard_bits,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function to_sfixed;
-
- function to_ufixed (
- arg : UNSIGNED; -- unsigned
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_ufixed (size_res'left downto fw);
- begin
- if (result'length < 1 or arg'length < 1) then
- return NAUF;
- else
- result := to_ufixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function to_ufixed;
-
- function to_sfixed (
- arg : SIGNED; -- signed
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_sfixed (size_res'left downto fw);
- begin
- if (result'length < 1 or arg'length < 1) then
- return NASF;
- else
- result := to_sfixed (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function to_sfixed;
-
- function resize (
- arg : UNRESOLVED_ufixed; -- input
- size_res : UNRESOLVED_ufixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_ufixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_ufixed (size_res'high downto fw);
- begin
- if (result'length < 1 or arg'length < 1) then
- return NAUF;
- else
- result := resize (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function resize;
-
- function resize (
- arg : UNRESOLVED_sfixed; -- input
- size_res : UNRESOLVED_sfixed; -- for size only
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style;
- constant round_style : fixed_round_style_type := fixed_round_style)
- return UNRESOLVED_sfixed is
- constant fw : INTEGER := mine (size_res'low, size_res'low); -- catch literals
- variable result : UNRESOLVED_sfixed (size_res'high downto fw);
- begin
- if (result'length < 1 or arg'length < 1) then
- return NASF;
- else
- result := resize (arg => arg,
- left_index => size_res'high,
- right_index => size_res'low,
- round_style => round_style,
- overflow_style => overflow_style);
- return result;
- end if;
- end function resize;
-
- -- Overloaded math functions for real
- function "+" (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : REAL)
- return UNRESOLVED_ufixed is
- begin
- return (l + to_ufixed (r, l'high, l'low));
- end function "+";
-
- function "+" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return (to_ufixed (l, r'high, r'low) + r);
- end function "+";
-
- function "+" (
- l : UNRESOLVED_sfixed; -- fixed point input
- r : REAL)
- return UNRESOLVED_sfixed is
- begin
- return (l + to_sfixed (r, l'high, l'low));
- end function "+";
-
- function "+" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- begin
- return (to_sfixed (l, r'high, r'low) + r);
- end function "+";
-
- function "-" (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : REAL)
- return UNRESOLVED_ufixed is
- begin
- return (l - to_ufixed (r, l'high, l'low));
- end function "-";
-
- function "-" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return (to_ufixed (l, r'high, r'low) - r);
- end function "-";
-
- function "-" (
- l : UNRESOLVED_sfixed; -- fixed point input
- r : REAL)
- return UNRESOLVED_sfixed is
- begin
- return (l - to_sfixed (r, l'high, l'low));
- end function "-";
-
- function "-" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- begin
- return (to_sfixed (l, r'high, r'low) - r);
- end function "-";
-
- function "*" (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : REAL)
- return UNRESOLVED_ufixed is
- begin
- return (l * to_ufixed (r, l'high, l'low));
- end function "*";
-
- function "*" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return (to_ufixed (l, r'high, r'low) * r);
- end function "*";
-
- function "*" (
- l : UNRESOLVED_sfixed; -- fixed point input
- r : REAL)
- return UNRESOLVED_sfixed is
- begin
- return (l * to_sfixed (r, l'high, l'low));
- end function "*";
-
- function "*" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- begin
- return (to_sfixed (l, r'high, r'low) * r);
- end function "*";
-
--- function "/" (
--- l : UNRESOLVED_ufixed; -- fixed point input
--- r : REAL)
--- return UNRESOLVED_ufixed is
--- begin
--- return (l / to_ufixed (r, l'high, l'low));
--- end function "/";
-
--- function "/" (
--- l : REAL;
--- r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return (to_ufixed (l, r'high, r'low) / r);
--- end function "/";
-
--- function "/" (
--- l : UNRESOLVED_sfixed; -- fixed point input
--- r : REAL)
--- return UNRESOLVED_sfixed is
--- begin
--- return (l / to_sfixed (r, l'high, l'low));
--- end function "/";
-
--- function "/" (
--- l : REAL;
--- r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return (to_sfixed (l, r'high, r'low) / r);
--- end function "/";
-
--- function "rem" (
--- l : UNRESOLVED_ufixed; -- fixed point input
--- r : REAL)
--- return UNRESOLVED_ufixed is
--- begin
--- return (l rem to_ufixed (r, l'high, l'low));
--- end function "rem";
-
--- function "rem" (
--- l : REAL;
--- r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return (to_ufixed (l, r'high, r'low) rem r);
--- end function "rem";
-
--- function "rem" (
--- l : UNRESOLVED_sfixed; -- fixed point input
--- r : REAL)
--- return UNRESOLVED_sfixed is
--- begin
--- return (l rem to_sfixed (r, l'high, l'low));
--- end function "rem";
-
--- function "rem" (
--- l : REAL;
--- r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return (to_sfixed (l, r'high, r'low) rem r);
--- end function "rem";
-
--- function "mod" (
--- l : UNRESOLVED_ufixed; -- fixed point input
--- r : REAL)
--- return UNRESOLVED_ufixed is
--- begin
--- return (l mod to_ufixed (r, l'high, l'low));
--- end function "mod";
-
--- function "mod" (
--- l : REAL;
--- r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return (to_ufixed (l, r'high, r'low) mod r);
--- end function "mod";
-
--- function "mod" (
--- l : UNRESOLVED_sfixed; -- fixed point input
--- r : REAL)
--- return UNRESOLVED_sfixed is
--- begin
--- return (l mod to_sfixed (r, l'high, l'low));
--- end function "mod";
-
--- function "mod" (
--- l : REAL;
--- r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return (to_sfixed (l, r'high, r'low) mod r);
--- end function "mod";
-
- -- Overloaded math functions for integers
- function "+" (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- return (l + to_ufixed (r, l'high, 0));
- end function "+";
-
- function "+" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return (to_ufixed (l, r'high, 0) + r);
- end function "+";
-
- function "+" (
- l : UNRESOLVED_sfixed; -- fixed point input
- r : INTEGER)
- return UNRESOLVED_sfixed is
- begin
- return (l + to_sfixed (r, l'high, 0));
- end function "+";
-
- function "+" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- begin
- return (to_sfixed (l, r'high, 0) + r);
- end function "+";
-
- -- Overloaded functions
- function "-" (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- return (l - to_ufixed (r, l'high, 0));
- end function "-";
-
- function "-" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return (to_ufixed (l, r'high, 0) - r);
- end function "-";
-
- function "-" (
- l : UNRESOLVED_sfixed; -- fixed point input
- r : INTEGER)
- return UNRESOLVED_sfixed is
- begin
- return (l - to_sfixed (r, l'high, 0));
- end function "-";
-
- function "-" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- begin
- return (to_sfixed (l, r'high, 0) - r);
- end function "-";
-
- -- Overloaded functions
- function "*" (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- return (l * to_ufixed (r, l'high, 0));
- end function "*";
-
- function "*" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return (to_ufixed (l, r'high, 0) * r);
- end function "*";
-
- function "*" (
- l : UNRESOLVED_sfixed; -- fixed point input
- r : INTEGER)
- return UNRESOLVED_sfixed is
- begin
- return (l * to_sfixed (r, l'high, 0));
- end function "*";
-
- function "*" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return UNRESOLVED_sfixed is
- begin
- return (to_sfixed (l, r'high, 0) * r);
- end function "*";
-
- -- Overloaded functions
--- function "/" (
--- l : UNRESOLVED_ufixed; -- fixed point input
--- r : NATURAL)
--- return UNRESOLVED_ufixed is
--- begin
--- return (l / to_ufixed (r, l'high, 0));
--- end function "/";
-
--- function "/" (
--- l : NATURAL;
--- r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return (to_ufixed (l, r'high, 0) / r);
--- end function "/";
-
--- function "/" (
--- l : UNRESOLVED_sfixed; -- fixed point input
--- r : INTEGER)
--- return UNRESOLVED_sfixed is
--- begin
--- return (l / to_sfixed (r, l'high, 0));
--- end function "/";
-
--- function "/" (
--- l : INTEGER;
--- r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return (to_sfixed (l, r'high, 0) / r);
--- end function "/";
-
--- function "rem" (
--- l : UNRESOLVED_ufixed; -- fixed point input
--- r : NATURAL)
--- return UNRESOLVED_ufixed is
--- begin
--- return (l rem to_ufixed (r, l'high, 0));
--- end function "rem";
-
--- function "rem" (
--- l : NATURAL;
--- r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return (to_ufixed (l, r'high, 0) rem r);
--- end function "rem";
-
--- function "rem" (
--- l : UNRESOLVED_sfixed; -- fixed point input
--- r : INTEGER)
--- return UNRESOLVED_sfixed is
--- begin
--- return (l rem to_sfixed (r, l'high, 0));
--- end function "rem";
-
--- function "rem" (
--- l : INTEGER;
--- r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return (to_sfixed (l, r'high, 0) rem r);
--- end function "rem";
-
--- function "mod" (
--- l : UNRESOLVED_ufixed; -- fixed point input
--- r : NATURAL)
--- return UNRESOLVED_ufixed is
--- begin
--- return (l mod to_ufixed (r, l'high, 0));
--- end function "mod";
-
--- function "mod" (
--- l : NATURAL;
--- r : UNRESOLVED_ufixed) -- fixed point input
--- return UNRESOLVED_ufixed is
--- begin
--- return (to_ufixed (l, r'high, 0) mod r);
--- end function "mod";
-
--- function "mod" (
--- l : UNRESOLVED_sfixed; -- fixed point input
--- r : INTEGER)
--- return UNRESOLVED_sfixed is
--- begin
--- return (l mod to_sfixed (r, l'high, 0));
--- end function "mod";
-
--- function "mod" (
--- l : INTEGER;
--- r : UNRESOLVED_sfixed) -- fixed point input
--- return UNRESOLVED_sfixed is
--- begin
--- return (to_sfixed (l, r'high, 0) mod r);
--- end function "mod";
-
- -- overloaded ufixed compare functions with integer
- function "=" (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return BOOLEAN is
- begin
- return (l = to_ufixed (r, l'high, l'low));
- end function "=";
-
- function "/=" (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return BOOLEAN is
- begin
- return (l /= to_ufixed (r, l'high, l'low));
- end function "/=";
-
- function ">=" (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return BOOLEAN is
- begin
- return (l >= to_ufixed (r, l'high, l'low));
- end function ">=";
-
- function "<=" (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return BOOLEAN is
- begin
- return (l <= to_ufixed (r, l'high, l'low));
- end function "<=";
-
- function ">" (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return BOOLEAN is
- begin
- return (l > to_ufixed (r, l'high, l'low));
- end function ">";
-
- function "<" (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return BOOLEAN is
- begin
- return (l < to_ufixed (r, l'high, l'low));
- end function "<";
-
- function \?=\ (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?=\ (l, to_ufixed (r, l'high, l'low));
- end function \?=\;
-
- function \?/=\ (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?/=\ (l, to_ufixed (r, l'high, l'low));
- end function \?/=\;
-
- function \?>=\ (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>=\ (l, to_ufixed (r, l'high, l'low));
- end function \?>=\;
-
- function \?<=\ (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<=\ (l, to_ufixed (r, l'high, l'low));
- end function \?<=\;
-
- function \?>\ (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>\ (l, to_ufixed (r, l'high, l'low));
- end function \?>\;
-
- function \?<\ (
- l : UNRESOLVED_ufixed;
- r : NATURAL) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<\ (l, to_ufixed (r, l'high, l'low));
- end function \?<\;
-
- function maximum (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- return maximum (l, to_ufixed (r, l'high, l'low));
- end function maximum;
-
- function minimum (
- l : UNRESOLVED_ufixed; -- fixed point input
- r : NATURAL)
- return UNRESOLVED_ufixed is
- begin
- return minimum (l, to_ufixed (r, l'high, l'low));
- end function minimum;
-
- -- NATURAL to ufixed
- function "=" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) = r);
- end function "=";
-
- function "/=" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) /= r);
- end function "/=";
-
- function ">=" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) >= r);
- end function ">=";
-
- function "<=" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) <= r);
- end function "<=";
-
- function ">" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) > r);
- end function ">";
-
- function "<" (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) < r);
- end function "<";
-
- function \?=\ (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?=\ (to_ufixed (l, r'high, r'low), r);
- end function \?=\;
-
- function \?/=\ (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?/=\ (to_ufixed (l, r'high, r'low), r);
- end function \?/=\;
-
- function \?>=\ (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>=\ (to_ufixed (l, r'high, r'low), r);
- end function \?>=\;
-
- function \?<=\ (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<=\ (to_ufixed (l, r'high, r'low), r);
- end function \?<=\;
-
- function \?>\ (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>\ (to_ufixed (l, r'high, r'low), r);
- end function \?>\;
-
- function \?<\ (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<\ (to_ufixed (l, r'high, r'low), r);
- end function \?<\;
-
- function maximum (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return maximum (to_ufixed (l, r'high, r'low), r);
- end function maximum;
-
- function minimum (
- l : NATURAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return minimum (to_ufixed (l, r'high, r'low), r);
- end function minimum;
-
- -- overloaded ufixed compare functions with real
- function "=" (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l = to_ufixed (r, l'high, l'low));
- end function "=";
-
- function "/=" (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l /= to_ufixed (r, l'high, l'low));
- end function "/=";
-
- function ">=" (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l >= to_ufixed (r, l'high, l'low));
- end function ">=";
-
- function "<=" (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l <= to_ufixed (r, l'high, l'low));
- end function "<=";
-
- function ">" (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l > to_ufixed (r, l'high, l'low));
- end function ">";
-
- function "<" (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l < to_ufixed (r, l'high, l'low));
- end function "<";
-
- function \?=\ (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?=\ (l, to_ufixed (r, l'high, l'low));
- end function \?=\;
-
- function \?/=\ (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?/=\ (l, to_ufixed (r, l'high, l'low));
- end function \?/=\;
-
- function \?>=\ (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?>=\ (l, to_ufixed (r, l'high, l'low));
- end function \?>=\;
-
- function \?<=\ (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?<=\ (l, to_ufixed (r, l'high, l'low));
- end function \?<=\;
-
- function \?>\ (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?>\ (l, to_ufixed (r, l'high, l'low));
- end function \?>\;
-
- function \?<\ (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?<\ (l, to_ufixed (r, l'high, l'low));
- end function \?<\;
-
- function maximum (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return UNRESOLVED_ufixed is
- begin
- return maximum (l, to_ufixed (r, l'high, l'low));
- end function maximum;
-
- function minimum (
- l : UNRESOLVED_ufixed;
- r : REAL)
- return UNRESOLVED_ufixed is
- begin
- return minimum (l, to_ufixed (r, l'high, l'low));
- end function minimum;
-
- -- real and ufixed
- function "=" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) = r);
- end function "=";
-
- function "/=" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) /= r);
- end function "/=";
-
- function ">=" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) >= r);
- end function ">=";
-
- function "<=" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) <= r);
- end function "<=";
-
- function ">" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) > r);
- end function ">";
-
- function "<" (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_ufixed (l, r'high, r'low) < r);
- end function "<";
-
- function \?=\ (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?=\ (to_ufixed (l, r'high, r'low), r);
- end function \?=\;
-
- function \?/=\ (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?/=\ (to_ufixed (l, r'high, r'low), r);
- end function \?/=\;
-
- function \?>=\ (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>=\ (to_ufixed (l, r'high, r'low), r);
- end function \?>=\;
-
- function \?<=\ (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<=\ (to_ufixed (l, r'high, r'low), r);
- end function \?<=\;
-
- function \?>\ (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>\ (to_ufixed (l, r'high, r'low), r);
- end function \?>\;
-
- function \?<\ (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<\ (to_ufixed (l, r'high, r'low), r);
- end function \?<\;
-
- function maximum (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return maximum (to_ufixed (l, r'high, r'low), r);
- end function maximum;
-
- function minimum (
- l : REAL;
- r : UNRESOLVED_ufixed) -- fixed point input
- return UNRESOLVED_ufixed is
- begin
- return minimum (to_ufixed (l, r'high, r'low), r);
- end function minimum;
-
- -- overloaded sfixed compare functions with integer
- function "=" (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return BOOLEAN is
- begin
- return (l = to_sfixed (r, l'high, l'low));
- end function "=";
-
- function "/=" (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return BOOLEAN is
- begin
- return (l /= to_sfixed (r, l'high, l'low));
- end function "/=";
-
- function ">=" (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return BOOLEAN is
- begin
- return (l >= to_sfixed (r, l'high, l'low));
- end function ">=";
-
- function "<=" (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return BOOLEAN is
- begin
- return (l <= to_sfixed (r, l'high, l'low));
- end function "<=";
-
- function ">" (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return BOOLEAN is
- begin
- return (l > to_sfixed (r, l'high, l'low));
- end function ">";
-
- function "<" (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return BOOLEAN is
- begin
- return (l < to_sfixed (r, l'high, l'low));
- end function "<";
-
- function \?=\ (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return STD_ULOGIC is
- begin
- return \?=\ (l, to_sfixed (r, l'high, l'low));
- end function \?=\;
-
- function \?/=\ (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return STD_ULOGIC is
- begin
- return \?/=\ (l, to_sfixed (r, l'high, l'low));
- end function \?/=\;
-
- function \?>=\ (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return STD_ULOGIC is
- begin
- return \?>=\ (l, to_sfixed (r, l'high, l'low));
- end function \?>=\;
-
- function \?<=\ (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return STD_ULOGIC is
- begin
- return \?<=\ (l, to_sfixed (r, l'high, l'low));
- end function \?<=\;
-
- function \?>\ (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return STD_ULOGIC is
- begin
- return \?>\ (l, to_sfixed (r, l'high, l'low));
- end function \?>\;
-
- function \?<\ (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return STD_ULOGIC is
- begin
- return \?<\ (l, to_sfixed (r, l'high, l'low));
- end function \?<\;
-
- function maximum (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return UNRESOLVED_sfixed is
- begin
- return maximum (l, to_sfixed (r, l'high, l'low));
- end function maximum;
-
- function minimum (
- l : UNRESOLVED_sfixed;
- r : INTEGER)
- return UNRESOLVED_sfixed is
- begin
- return minimum (l, to_sfixed (r, l'high, l'low));
- end function minimum;
-
- -- integer and sfixed
- function "=" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) = r);
- end function "=";
-
- function "/=" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) /= r);
- end function "/=";
-
- function ">=" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) >= r);
- end function ">=";
-
- function "<=" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) <= r);
- end function "<=";
-
- function ">" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) > r);
- end function ">";
-
- function "<" (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) < r);
- end function "<";
-
- function \?=\ (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?=\ (to_sfixed (l, r'high, r'low), r);
- end function \?=\;
-
- function \?/=\ (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?/=\ (to_sfixed (l, r'high, r'low), r);
- end function \?/=\;
-
- function \?>=\ (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>=\ (to_sfixed (l, r'high, r'low), r);
- end function \?>=\;
-
- function \?<=\ (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<=\ (to_sfixed (l, r'high, r'low), r);
- end function \?<=\;
-
- function \?>\ (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>\ (to_sfixed (l, r'high, r'low), r);
- end function \?>\;
-
- function \?<\ (
- l : INTEGER;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<\ (to_sfixed (l, r'high, r'low), r);
- end function \?<\;
-
- function maximum (
- l : INTEGER;
- r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return maximum (to_sfixed (l, r'high, r'low), r);
- end function maximum;
-
- function minimum (
- l : INTEGER;
- r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return minimum (to_sfixed (l, r'high, r'low), r);
- end function minimum;
-
- -- overloaded sfixed compare functions with real
- function "=" (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l = to_sfixed (r, l'high, l'low));
- end function "=";
-
- function "/=" (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l /= to_sfixed (r, l'high, l'low));
- end function "/=";
-
- function ">=" (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l >= to_sfixed (r, l'high, l'low));
- end function ">=";
-
- function "<=" (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l <= to_sfixed (r, l'high, l'low));
- end function "<=";
-
- function ">" (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l > to_sfixed (r, l'high, l'low));
- end function ">";
-
- function "<" (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return BOOLEAN is
- begin
- return (l < to_sfixed (r, l'high, l'low));
- end function "<";
-
- function \?=\ (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?=\ (l, to_sfixed (r, l'high, l'low));
- end function \?=\;
-
- function \?/=\ (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?/=\ (l, to_sfixed (r, l'high, l'low));
- end function \?/=\;
-
- function \?>=\ (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?>=\ (l, to_sfixed (r, l'high, l'low));
- end function \?>=\;
-
- function \?<=\ (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?<=\ (l, to_sfixed (r, l'high, l'low));
- end function \?<=\;
-
- function \?>\ (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?>\ (l, to_sfixed (r, l'high, l'low));
- end function \?>\;
-
- function \?<\ (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return STD_ULOGIC is
- begin
- return \?<\ (l, to_sfixed (r, l'high, l'low));
- end function \?<\;
-
- function maximum (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return UNRESOLVED_sfixed is
- begin
- return maximum (l, to_sfixed (r, l'high, l'low));
- end function maximum;
-
- function minimum (
- l : UNRESOLVED_sfixed;
- r : REAL)
- return UNRESOLVED_sfixed is
- begin
- return minimum (l, to_sfixed (r, l'high, l'low));
- end function minimum;
-
- -- REAL and sfixed
- function "=" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) = r);
- end function "=";
-
- function "/=" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) /= r);
- end function "/=";
-
- function ">=" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) >= r);
- end function ">=";
-
- function "<=" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) <= r);
- end function "<=";
-
- function ">" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) > r);
- end function ">";
-
- function "<" (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return BOOLEAN is
- begin
- return (to_sfixed (l, r'high, r'low) < r);
- end function "<";
-
- function \?=\ (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?=\ (to_sfixed (l, r'high, r'low), r);
- end function \?=\;
-
- function \?/=\ (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?/=\ (to_sfixed (l, r'high, r'low), r);
- end function \?/=\;
-
- function \?>=\ (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>=\ (to_sfixed (l, r'high, r'low), r);
- end function \?>=\;
-
- function \?<=\ (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<=\ (to_sfixed (l, r'high, r'low), r);
- end function \?<=\;
-
- function \?>\ (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?>\ (to_sfixed (l, r'high, r'low), r);
- end function \?>\;
-
- function \?<\ (
- l : REAL;
- r : UNRESOLVED_sfixed) -- fixed point input
- return STD_ULOGIC is
- begin
- return \?<\ (to_sfixed (l, r'high, r'low), r);
- end function \?<\;
-
- function maximum (
- l : REAL;
- r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return maximum (to_sfixed (l, r'high, r'low), r);
- end function maximum;
-
- function minimum (
- l : REAL;
- r : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return minimum (to_sfixed (l, r'high, r'low), r);
- end function minimum;
--- rtl_synthesis off
--- pragma synthesis_off
- -- copied from std_logic_textio
- type MVL9plus is ('U', 'X', '0', '1', 'Z', 'W', 'L', 'H', '-', error);
- type char_indexed_by_MVL9 is array (STD_ULOGIC) of CHARACTER;
- type MVL9_indexed_by_char is array (CHARACTER) of STD_ULOGIC;
- type MVL9plus_indexed_by_char is array (CHARACTER) of MVL9plus;
-
- constant MVL9_to_char : char_indexed_by_MVL9 := "UX01ZWLH-";
- constant char_to_MVL9 : MVL9_indexed_by_char :=
- ('U' => 'U', 'X' => 'X', '0' => '0', '1' => '1', 'Z' => 'Z',
- 'W' => 'W', 'L' => 'L', 'H' => 'H', '-' => '-', others => 'U');
- constant char_to_MVL9plus : MVL9plus_indexed_by_char :=
- ('U' => 'U', 'X' => 'X', '0' => '0', '1' => '1', 'Z' => 'Z',
- 'W' => 'W', 'L' => 'L', 'H' => 'H', '-' => '-', others => error);
- constant NBSP : CHARACTER := CHARACTER'val(160); -- space character
- constant NUS : STRING(2 to 1) := (others => ' ');
-
- -- %%% Replicated Textio functions
- procedure Char2TriBits (C : CHARACTER;
- RESULT : out STD_ULOGIC_VECTOR(2 downto 0);
- GOOD : out BOOLEAN;
- ISSUE_ERROR : in BOOLEAN) is
- begin
- case c is
- when '0' => result := o"0"; good := true;
- when '1' => result := o"1"; good := true;
- when '2' => result := o"2"; good := true;
- when '3' => result := o"3"; good := true;
- when '4' => result := o"4"; good := true;
- when '5' => result := o"5"; good := true;
- when '6' => result := o"6"; good := true;
- when '7' => result := o"7"; good := true;
- when 'Z' => result := "ZZZ"; good := true;
- when 'X' => result := "XXX"; good := true;
- when others =>
- assert not ISSUE_ERROR
- report "fixed_pkg:"
- & "OREAD Error: Read a '" & c &
- "', expected an Octal character (0-7)."
- severity error;
- result := "UUU";
- good := false;
- end case;
- end procedure Char2TriBits;
- -- Hex Read and Write procedures for STD_ULOGIC_VECTOR.
- -- Modified from the original to be more forgiving.
-
- procedure Char2QuadBits (C : CHARACTER;
- RESULT : out STD_ULOGIC_VECTOR(3 downto 0);
- GOOD : out BOOLEAN;
- ISSUE_ERROR : in BOOLEAN) is
- begin
- case c is
- when '0' => result := x"0"; good := true;
- when '1' => result := x"1"; good := true;
- when '2' => result := x"2"; good := true;
- when '3' => result := x"3"; good := true;
- when '4' => result := x"4"; good := true;
- when '5' => result := x"5"; good := true;
- when '6' => result := x"6"; good := true;
- when '7' => result := x"7"; good := true;
- when '8' => result := x"8"; good := true;
- when '9' => result := x"9"; good := true;
- when 'A' | 'a' => result := x"A"; good := true;
- when 'B' | 'b' => result := x"B"; good := true;
- when 'C' | 'c' => result := x"C"; good := true;
- when 'D' | 'd' => result := x"D"; good := true;
- when 'E' | 'e' => result := x"E"; good := true;
- when 'F' | 'f' => result := x"F"; good := true;
- when 'Z' => result := "ZZZZ"; good := true;
- when 'X' => result := "XXXX"; good := true;
- when others =>
- assert not ISSUE_ERROR
- report "fixed_pkg:"
- & "HREAD Error: Read a '" & c &
- "', expected a Hex character (0-F)."
- severity error;
- result := "UUUU";
- good := false;
- end case;
- end procedure Char2QuadBits;
-
- -- purpose: Skips white space
- procedure skip_whitespace (
- L : inout LINE) is
- variable readOk : BOOLEAN;
- variable c : CHARACTER;
- begin
- while L /= null and L.all'length /= 0 loop
- if (L.all(1) = ' ' or L.all(1) = NBSP or L.all(1) = HT) then
- read (l, c, readOk);
- else
- exit;
- end if;
- end loop;
- end procedure skip_whitespace;
-
- function to_ostring (value : STD_ULOGIC_VECTOR) return STRING is
- constant ne : INTEGER := (value'length+2)/3;
- variable pad : STD_ULOGIC_VECTOR(0 to (ne*3 - value'length) - 1);
- variable ivalue : STD_ULOGIC_VECTOR(0 to ne*3 - 1);
- variable result : STRING(1 to ne);
- variable tri : STD_ULOGIC_VECTOR(0 to 2);
- begin
- if value'length < 1 then
- return NUS;
- else
- if value (value'left) = 'Z' then
- pad := (others => 'Z');
- else
- pad := (others => '0');
- end if;
- ivalue := pad & value;
- for i in 0 to ne-1 loop
- tri := To_X01Z(ivalue(3*i to 3*i+2));
- case tri is
- when o"0" => result(i+1) := '0';
- when o"1" => result(i+1) := '1';
- when o"2" => result(i+1) := '2';
- when o"3" => result(i+1) := '3';
- when o"4" => result(i+1) := '4';
- when o"5" => result(i+1) := '5';
- when o"6" => result(i+1) := '6';
- when o"7" => result(i+1) := '7';
- when "ZZZ" => result(i+1) := 'Z';
- when others => result(i+1) := 'X';
- end case;
- end loop;
- return result;
- end if;
- end function to_ostring;
- -------------------------------------------------------------------
- function to_hstring (value : STD_ULOGIC_VECTOR) return STRING is
- constant ne : INTEGER := (value'length+3)/4;
- variable pad : STD_ULOGIC_VECTOR(0 to (ne*4 - value'length) - 1);
- variable ivalue : STD_ULOGIC_VECTOR(0 to ne*4 - 1);
- variable result : STRING(1 to ne);
- variable quad : STD_ULOGIC_VECTOR(0 to 3);
- begin
- if value'length < 1 then
- return NUS;
- else
- if value (value'left) = 'Z' then
- pad := (others => 'Z');
- else
- pad := (others => '0');
- end if;
- ivalue := pad & value;
- for i in 0 to ne-1 loop
- quad := To_X01Z(ivalue(4*i to 4*i+3));
- case quad is
- when x"0" => result(i+1) := '0';
- when x"1" => result(i+1) := '1';
- when x"2" => result(i+1) := '2';
- when x"3" => result(i+1) := '3';
- when x"4" => result(i+1) := '4';
- when x"5" => result(i+1) := '5';
- when x"6" => result(i+1) := '6';
- when x"7" => result(i+1) := '7';
- when x"8" => result(i+1) := '8';
- when x"9" => result(i+1) := '9';
- when x"A" => result(i+1) := 'A';
- when x"B" => result(i+1) := 'B';
- when x"C" => result(i+1) := 'C';
- when x"D" => result(i+1) := 'D';
- when x"E" => result(i+1) := 'E';
- when x"F" => result(i+1) := 'F';
- when "ZZZZ" => result(i+1) := 'Z';
- when others => result(i+1) := 'X';
- end case;
- end loop;
- return result;
- end if;
- end function to_hstring;
-
-
--- %%% END replicated textio functions
-
- -- purpose: writes fixed point into a line
- procedure write (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_ufixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0) is
- variable s : STRING(1 to value'length +1) := (others => ' ');
- variable sindx : INTEGER;
- begin -- function write Example: 0011.1100
- sindx := 1;
- for i in value'high downto value'low loop
- if i = -1 then
- s(sindx) := '.';
- sindx := sindx + 1;
- end if;
- s(sindx) := MVL9_to_char(STD_ULOGIC(value(i)));
- sindx := sindx + 1;
- end loop;
- write(l, s, justified, field);
- end procedure write;
-
- -- purpose: writes fixed point into a line
- procedure write (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_sfixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0) is
- variable s : STRING(1 to value'length +1);
- variable sindx : INTEGER;
- begin -- function write Example: 0011.1100
- sindx := 1;
- for i in value'high downto value'low loop
- if i = -1 then
- s(sindx) := '.';
- sindx := sindx + 1;
- end if;
- s(sindx) := MVL9_to_char(STD_ULOGIC(value(i)));
- sindx := sindx + 1;
- end loop;
- write(l, s, justified, field);
- end procedure write;
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed) is
- -- Possible data: 00000.0000000
- -- 000000000000
- variable c : CHARACTER;
- variable readOk : BOOLEAN;
- variable i : INTEGER; -- index variable
- variable mv : ufixed (VALUE'range);
- variable lastu : BOOLEAN := false; -- last character was an "_"
- variable founddot : BOOLEAN := false; -- found a "."
- begin -- READ
- VALUE := (VALUE'range => 'U');
- Skip_whitespace (L);
- if VALUE'length > 0 then -- non Null input string
- read (l, c, readOk);
- i := value'high;
- while i >= VALUE'low loop
- if readOk = false then -- Bail out if there was a bad read
- report "fixed_pkg:" & "READ(ufixed) "
- & "End of string encountered"
- severity error;
- return;
- elsif c = '_' then
- if i = value'high then
- report "fixed_pkg:" & "READ(ufixed) "
- & "String begins with an ""_""" severity error;
- return;
- elsif lastu then
- report "fixed_pkg:" & "READ(ufixed) "
- & "Two underscores detected in input string ""__"""
- severity error;
- return;
- else
- lastu := true;
- end if;
- elsif c = '.' then -- binary point
- if founddot then
- report "fixed_pkg:" & "READ(ufixed) "
- & "Two binary points found in input string" severity error;
- return;
- elsif i /= -1 then -- Seperator in the wrong spot
- report "fixed_pkg:" & "READ(ufixed) "
- & "Decimal point does not match number format "
- severity error;
- return;
- end if;
- founddot := true;
- lastu := false;
- elsif c = ' ' or c = NBSP or c = HT then -- reading done.
- report "fixed_pkg:" & "READ(ufixed) "
- & "Short read, Space encounted in input string"
- severity error;
- return;
- elsif char_to_MVL9plus(c) = error then
- report "fixed_pkg:" & "READ(ufixed) "
- & "Character '" &
- c & "' read, expected STD_ULOGIC literal."
- severity error;
- return;
- else
- mv(i) := char_to_MVL9(c);
- i := i - 1;
- if i < mv'low then
- VALUE := mv;
- return;
- end if;
- lastu := false;
- end if;
- read(L, c, readOk);
- end loop;
- end if;
- end procedure READ;
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed;
- GOOD : out BOOLEAN) is
- -- Possible data: 00000.0000000
- -- 000000000000
- variable c : CHARACTER;
- variable readOk : BOOLEAN;
- variable mv : ufixed (VALUE'range);
- variable i : INTEGER; -- index variable
- variable lastu : BOOLEAN := false; -- last character was an "_"
- variable founddot : BOOLEAN := false; -- found a "."
- begin -- READ
- VALUE := (VALUE'range => 'U');
- Skip_whitespace (L);
- if VALUE'length > 0 then
- read (l, c, readOk);
- i := value'high;
- GOOD := false;
- while i >= VALUE'low loop
- if not readOk then -- Bail out if there was a bad read
- return;
- elsif c = '_' then
- if i = value'high then -- Begins with an "_"
- return;
- elsif lastu then -- "__" detected
- return;
- else
- lastu := true;
- end if;
- elsif c = '.' then -- binary point
- if founddot then
- return;
- elsif i /= -1 then -- Seperator in the wrong spot
- return;
- end if;
- founddot := true;
- lastu := false;
- elsif (char_to_MVL9plus(c) = error) then -- Illegal character/short read
- return;
- else
- mv(i) := char_to_MVL9(c);
- i := i - 1;
- if i < mv'low then -- reading done
- GOOD := true;
- VALUE := mv;
- return;
- end if;
- lastu := false;
- end if;
- read(L, c, readOk);
- end loop;
- else
- GOOD := true; -- read into a null array
- end if;
- end procedure READ;
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed) is
- variable c : CHARACTER;
- variable readOk : BOOLEAN;
- variable i : INTEGER; -- index variable
- variable mv : sfixed (VALUE'range);
- variable lastu : BOOLEAN := false; -- last character was an "_"
- variable founddot : BOOLEAN := false; -- found a "."
- begin -- READ
- VALUE := (VALUE'range => 'U');
- Skip_whitespace (L);
- if VALUE'length > 0 then -- non Null input string
- read (l, c, readOk);
- i := value'high;
- while i >= VALUE'low loop
- if readOk = false then -- Bail out if there was a bad read
- report "fixed_pkg:" & "READ(sfixed) "
- & "End of string encountered"
- severity error;
- return;
- elsif c = '_' then
- if i = value'high then
- report "fixed_pkg:" & "READ(sfixed) "
- & "String begins with an ""_""" severity error;
- return;
- elsif lastu then
- report "fixed_pkg:" & "READ(sfixed) "
- & "Two underscores detected in input string ""__"""
- severity error;
- return;
- else
- lastu := true;
- end if;
- elsif c = '.' then -- binary point
- if founddot then
- report "fixed_pkg:" & "READ(sfixed) "
- & "Two binary points found in input string" severity error;
- return;
- elsif i /= -1 then -- Seperator in the wrong spot
- report "fixed_pkg:" & "READ(sfixed) "
- & "Decimal point does not match number format "
- severity error;
- return;
- end if;
- founddot := true;
- lastu := false;
- elsif c = ' ' or c = NBSP or c = HT then -- reading done.
- report "fixed_pkg:" & "READ(sfixed) "
- & "Short read, Space encounted in input string"
- severity error;
- return;
- elsif char_to_MVL9plus(c) = error then
- report "fixed_pkg:" & "READ(sfixed) "
- & "Character '" &
- c & "' read, expected STD_ULOGIC literal."
- severity error;
- return;
- else
- mv(i) := char_to_MVL9(c);
- i := i - 1;
- if i < mv'low then
- VALUE := mv;
- return;
- end if;
- lastu := false;
- end if;
- read(L, c, readOk);
- end loop;
- end if;
- end procedure READ;
-
- procedure READ(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed;
- GOOD : out BOOLEAN) is
- variable value_ufixed : UNRESOLVED_ufixed (VALUE'range);
- begin -- READ
- READ (L => L, VALUE => value_ufixed, GOOD => GOOD);
- VALUE := UNRESOLVED_sfixed (value_ufixed);
- end procedure READ;
-
- -- octal read and write
- procedure owrite (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_ufixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0) is
- begin -- Example 03.30
- write (L => L,
- VALUE => to_ostring (VALUE),
- JUSTIFIED => JUSTIFIED,
- FIELD => FIELD);
- end procedure owrite;
-
- procedure owrite (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_sfixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0) is
- begin -- Example 03.30
- write (L => L,
- VALUE => to_ostring (VALUE),
- JUSTIFIED => JUSTIFIED,
- FIELD => FIELD);
- end procedure owrite;
-
- -- purpose: Routines common to the OREAD routines
- procedure OREAD_common (
- L : inout LINE;
- slv : out STD_ULOGIC_VECTOR;
- igood : out BOOLEAN;
- idex : out INTEGER;
- constant bpoint : in INTEGER; -- binary point
- constant message : in BOOLEAN;
- constant smath : in BOOLEAN) is
-
- -- purpose: error message routine
- procedure errmes (
- constant mess : in STRING) is -- error message
- begin
- if message then
- if smath then
- report "fixed_pkg:"
- & "OREAD(sfixed) "
- & mess
- severity error;
- else
- report "fixed_pkg:"
- & "OREAD(ufixed) "
- & mess
- severity error;
- end if;
- end if;
- end procedure errmes;
- variable xgood : BOOLEAN;
- variable nybble : STD_ULOGIC_VECTOR (2 downto 0); -- 3 bits
- variable c : CHARACTER;
- variable i : INTEGER;
- variable lastu : BOOLEAN := false; -- last character was an "_"
- variable founddot : BOOLEAN := false; -- found a dot.
- begin
- Skip_whitespace (L);
- if slv'length > 0 then
- i := slv'high;
- read (l, c, xgood);
- while i > 0 loop
- if xgood = false then
- errmes ("Error: end of string encountered");
- exit;
- elsif c = '_' then
- if i = slv'length then
- errmes ("Error: String begins with an ""_""");
- xgood := false;
- exit;
- elsif lastu then
- errmes ("Error: Two underscores detected in input string ""__""");
- xgood := false;
- exit;
- else
- lastu := true;
- end if;
- elsif (c = '.') then
- if (i + 1 /= bpoint) then
- errmes ("encountered ""."" at wrong index");
- xgood := false;
- exit;
- elsif i = slv'length then
- errmes ("encounted a ""."" at the beginning of the line");
- xgood := false;
- exit;
- elsif founddot then
- errmes ("Two ""."" encounted in input string");
- xgood := false;
- exit;
- end if;
- founddot := true;
- lastu := false;
- else
- Char2triBits(c, nybble, xgood, message);
- if not xgood then
- exit;
- end if;
- slv (i downto i-2) := nybble;
- i := i - 3;
- lastu := false;
- end if;
- if i > 0 then
- read (L, c, xgood);
- end if;
- end loop;
- idex := i;
- igood := xgood;
- else
- igood := true; -- read into a null array
- idex := -1;
- end if;
- end procedure OREAD_common;
-
- -- Note that for Octal and Hex read, you can not start with a ".",
- -- the read is for numbers formatted "A.BC". These routines go to
- -- the nearest bounds, so "F.E" will fit into an sfixed (2 downto -3).
- procedure OREAD (L : inout LINE;
- VALUE : out UNRESOLVED_ufixed) is
- constant hbv : INTEGER := (((maximum(3, (VALUE'high+1))+2)/3)*3)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-2)/3)*3;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_ufixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- OREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => true,
- smath => false);
- if igood then -- We did not get another error
- if not ((i = -1) and -- We read everything, and high bits 0
- (or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0')) then
- report "fixed_pkg:"
- & "OREAD(ufixed): Vector truncated."
- severity error;
- else
- if (or_reduce (slv(VALUE'low-lbv-1 downto 0)) = '1') then
- assert NO_WARNING
- report "fixed_pkg:"
- & "OREAD(ufixed): Vector truncated"
- severity warning;
- end if;
- valuex := to_ufixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- end if;
- end if;
- end procedure OREAD;
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed;
- GOOD : out BOOLEAN) is
- constant hbv : INTEGER := (((maximum(3, (VALUE'high+1))+2)/3)*3)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-2)/3)*3;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_ufixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- OREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => false,
- smath => false);
- if (igood and -- We did not get another error
- (i = -1) and -- We read everything, and high bits 0
- (or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0')) then
- valuex := to_ufixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- good := true;
- else
- good := false;
- end if;
- end procedure OREAD;
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed) is
- constant hbv : INTEGER := (((maximum(3, (VALUE'high+1))+2)/3)*3)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-2)/3)*3;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_sfixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- OREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => true,
- smath => true);
- if igood then -- We did not get another error
- if not ((i = -1) and -- We read everything
- ((slv(VALUE'high-lbv) = '0' and -- sign bits = extra bits
- or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0') or
- (slv(VALUE'high-lbv) = '1' and
- and_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '1'))) then
- report "fixed_pkg:"
- & "OREAD(sfixed): Vector truncated."
- severity error;
- else
- if (or_reduce (slv(VALUE'low-lbv-1 downto 0)) = '1') then
- assert NO_WARNING
- report "fixed_pkg:"
- & "OREAD(sfixed): Vector truncated"
- severity warning;
- end if;
- valuex := to_sfixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- end if;
- end if;
- end procedure OREAD;
-
- procedure OREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed;
- GOOD : out BOOLEAN) is
- constant hbv : INTEGER := (((maximum(3, (VALUE'high+1))+2)/3)*3)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-2)/3)*3;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_sfixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- OREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => false,
- smath => true);
- if (igood -- We did not get another error
- and (i = -1) -- We read everything
- and ((slv(VALUE'high-lbv) = '0' and -- sign bits = extra bits
- or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0') or
- (slv(VALUE'high-lbv) = '1' and
- and_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '1'))) then
- valuex := to_sfixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- good := true;
- else
- good := false;
- end if;
- end procedure OREAD;
-
- -- hex read and write
- procedure hwrite (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_ufixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0) is
- begin -- Example 03.30
- write (L => L,
- VALUE => to_hstring (VALUE),
- JUSTIFIED => JUSTIFIED,
- FIELD => FIELD);
- end procedure hwrite;
-
- -- purpose: writes fixed point into a line
- procedure hwrite (
- L : inout LINE; -- input line
- VALUE : in UNRESOLVED_sfixed; -- fixed point input
- JUSTIFIED : in SIDE := right;
- FIELD : in WIDTH := 0) is
- begin -- Example 03.30
- write (L => L,
- VALUE => to_hstring (VALUE),
- JUSTIFIED => JUSTIFIED,
- FIELD => FIELD);
- end procedure hwrite;
-
- -- purpose: Routines common to the OREAD routines
- procedure HREAD_common (
- L : inout LINE;
- slv : out STD_ULOGIC_VECTOR;
- igood : out BOOLEAN;
- idex : out INTEGER;
- constant bpoint : in INTEGER; -- binary point
- constant message : in BOOLEAN;
- constant smath : in BOOLEAN) is
-
- -- purpose: error message routine
- procedure errmes (
- constant mess : in STRING) is -- error message
- begin
- if message then
- if smath then
- report "fixed_pkg:"
- & "HREAD(sfixed) "
- & mess
- severity error;
- else
- report "fixed_pkg:"
- & "HREAD(ufixed) "
- & mess
- severity error;
- end if;
- end if;
- end procedure errmes;
- variable xgood : BOOLEAN;
- variable nybble : STD_ULOGIC_VECTOR (3 downto 0); -- 4 bits
- variable c : CHARACTER;
- variable i : INTEGER;
- variable lastu : BOOLEAN := false; -- last character was an "_"
- variable founddot : BOOLEAN := false; -- found a dot.
- begin
- Skip_whitespace (L);
- if slv'length > 0 then
- i := slv'high;
- read (l, c, xgood);
- while i > 0 loop
- if xgood = false then
- errmes ("Error: end of string encountered");
- exit;
- elsif c = '_' then
- if i = slv'length then
- errmes ("Error: String begins with an ""_""");
- xgood := false;
- exit;
- elsif lastu then
- errmes ("Error: Two underscores detected in input string ""__""");
- xgood := false;
- exit;
- else
- lastu := true;
- end if;
- elsif (c = '.') then
- if (i + 1 /= bpoint) then
- errmes ("encountered ""."" at wrong index");
- xgood := false;
- exit;
- elsif i = slv'length then
- errmes ("encounted a ""."" at the beginning of the line");
- xgood := false;
- exit;
- elsif founddot then
- errmes ("Two ""."" encounted in input string");
- xgood := false;
- exit;
- end if;
- founddot := true;
- lastu := false;
- else
- Char2QuadBits(c, nybble, xgood, message);
- if not xgood then
- exit;
- end if;
- slv (i downto i-3) := nybble;
- i := i - 4;
- lastu := false;
- end if;
- if i > 0 then
- read (L, c, xgood);
- end if;
- end loop;
- idex := i;
- igood := xgood;
- else
- idex := -1;
- igood := true; -- read null string
- end if;
- end procedure HREAD_common;
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed) is
- constant hbv : INTEGER := (((maximum(4, (VALUE'high+1))+3)/4)*4)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-3)/4)*4;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_ufixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- HREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => false,
- smath => false);
- if igood then
- if not ((i = -1) and -- We read everything, and high bits 0
- (or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0')) then
- report "fixed_pkg:"
- & "HREAD(ufixed): Vector truncated."
- severity error;
- else
- if (or_reduce (slv(VALUE'low-lbv-1 downto 0)) = '1') then
- assert NO_WARNING
- report "fixed_pkg:"
- & "HREAD(ufixed): Vector truncated"
- severity warning;
- end if;
- valuex := to_ufixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- end if;
- end if;
- end procedure HREAD;
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_ufixed;
- GOOD : out BOOLEAN) is
- constant hbv : INTEGER := (((maximum(4, (VALUE'high+1))+3)/4)*4)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-3)/4)*4;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_ufixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- HREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => false,
- smath => false);
- if (igood and -- We did not get another error
- (i = -1) and -- We read everything, and high bits 0
- (or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0')) then
- valuex := to_ufixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- good := true;
- else
- good := false;
- end if;
- end procedure HREAD;
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed) is
- constant hbv : INTEGER := (((maximum(4, (VALUE'high+1))+3)/4)*4)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-3)/4)*4;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_sfixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- HREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => true,
- smath => true);
- if igood then -- We did not get another error
- if not ((i = -1) -- We read everything
- and ((slv(VALUE'high-lbv) = '0' and -- sign bits = extra bits
- or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0') or
- (slv(VALUE'high-lbv) = '1' and
- and_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '1'))) then
- report "fixed_pkg:"
- & "HREAD(sfixed): Vector truncated."
- severity error;
- else
- if (or_reduce (slv(VALUE'low-lbv-1 downto 0)) = '1') then
- assert NO_WARNING
- report "fixed_pkg:"
- & "HREAD(sfixed): Vector truncated"
- severity warning;
- end if;
- valuex := to_sfixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- end if;
- end if;
- end procedure HREAD;
-
- procedure HREAD(L : inout LINE;
- VALUE : out UNRESOLVED_sfixed;
- GOOD : out BOOLEAN) is
- constant hbv : INTEGER := (((maximum(4, (VALUE'high+1))+3)/4)*4)-1;
- constant lbv : INTEGER := ((mine(0, VALUE'low)-3)/4)*4;
- variable slv : STD_ULOGIC_VECTOR (hbv-lbv downto 0); -- high bits
- variable valuex : UNRESOLVED_sfixed (hbv downto lbv);
- variable igood : BOOLEAN;
- variable i : INTEGER;
- begin
- VALUE := (VALUE'range => 'U');
- HREAD_common ( L => L,
- slv => slv,
- igood => igood,
- idex => i,
- bpoint => -lbv,
- message => false,
- smath => true);
- if (igood and -- We did not get another error
- (i = -1) and -- We read everything
- ((slv(VALUE'high-lbv) = '0' and -- sign bits = extra bits
- or_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '0') or
- (slv(VALUE'high-lbv) = '1' and
- and_reduce (slv(hbv-lbv downto VALUE'high+1-lbv)) = '1'))) then
- valuex := to_sfixed (slv, hbv, lbv);
- VALUE := valuex (VALUE'range);
- good := true;
- else
- good := false;
- end if;
- end procedure HREAD;
-
- function to_string (value : UNRESOLVED_ufixed) return STRING is
- variable s : STRING(1 to value'length +1) := (others => ' ');
- variable subval : UNRESOLVED_ufixed (value'high downto -1);
- variable sindx : INTEGER;
- begin
- if value'length < 1 then
- return NUS;
- else
- if value'high < 0 then
- if value(value'high) = 'Z' then
- return to_string (resize (sfixed(value), 0, value'low));
- else
- return to_string (resize (value, 0, value'low));
- end if;
- elsif value'low >= 0 then
- if Is_X (value(value'low)) then
- subval := (others => value(value'low));
- subval (value'range) := value;
- return to_string(subval);
- else
- return to_string (resize (value, value'high, -1));
- end if;
- else
- sindx := 1;
- for i in value'high downto value'low loop
- if i = -1 then
- s(sindx) := '.';
- sindx := sindx + 1;
- end if;
- s(sindx) := MVL9_to_char(STD_ULOGIC(value(i)));
- sindx := sindx + 1;
- end loop;
- return s;
- end if;
- end if;
- end function to_string;
-
- function to_string (value : UNRESOLVED_sfixed) return STRING is
- variable s : STRING(1 to value'length + 1) := (others => ' ');
- variable subval : UNRESOLVED_sfixed (value'high downto -1);
- variable sindx : INTEGER;
- begin
- if value'length < 1 then
- return NUS;
- else
- if value'high < 0 then
- return to_string (resize (value, 0, value'low));
- elsif value'low >= 0 then
- if Is_X (value(value'low)) then
- subval := (others => value(value'low));
- subval (value'range) := value;
- return to_string(subval);
- else
- return to_string (resize (value, value'high, -1));
- end if;
- else
- sindx := 1;
- for i in value'high downto value'low loop
- if i = -1 then
- s(sindx) := '.';
- sindx := sindx + 1;
- end if;
- s(sindx) := MVL9_to_char(STD_ULOGIC(value(i)));
- sindx := sindx + 1;
- end loop;
- return s;
- end if;
- end if;
- end function to_string;
-
- function to_ostring (value : UNRESOLVED_ufixed) return STRING is
- constant lne : INTEGER := (-VALUE'low+2)/3;
- variable subval : UNRESOLVED_ufixed (value'high downto -3);
- variable lpad : STD_ULOGIC_VECTOR (0 to (lne*3 + VALUE'low) -1);
- variable slv : STD_ULOGIC_VECTOR (value'length-1 downto 0);
- begin
- if value'length < 1 then
- return NUS;
- else
- if value'high < 0 then
- if value(value'high) = 'Z' then
- return to_ostring (resize (sfixed(value), 2, value'low));
- else
- return to_ostring (resize (value, 2, value'low));
- end if;
- elsif value'low >= 0 then
- if Is_X (value(value'low)) then
- subval := (others => value(value'low));
- subval (value'range) := value;
- return to_ostring(subval);
- else
- return to_ostring (resize (value, value'high, -3));
- end if;
- else
- slv := to_sulv (value);
- if Is_X (value (value'low)) then
- lpad := (others => value (value'low));
- else
- lpad := (others => '0');
- end if;
- return to_ostring(slv(slv'high downto slv'high-VALUE'high))
- & "."
- & to_ostring(slv(slv'high-VALUE'high-1 downto 0) & lpad);
- end if;
- end if;
- end function to_ostring;
-
- function to_hstring (value : UNRESOLVED_ufixed) return STRING is
- constant lne : INTEGER := (-VALUE'low+3)/4;
- variable subval : UNRESOLVED_ufixed (value'high downto -4);
- variable lpad : STD_ULOGIC_VECTOR (0 to (lne*4 + VALUE'low) -1);
- variable slv : STD_ULOGIC_VECTOR (value'length-1 downto 0);
- begin
- if value'length < 1 then
- return NUS;
- else
- if value'high < 0 then
- if value(value'high) = 'Z' then
- return to_hstring (resize (sfixed(value), 3, value'low));
- else
- return to_hstring (resize (value, 3, value'low));
- end if;
- elsif value'low >= 0 then
- if Is_X (value(value'low)) then
- subval := (others => value(value'low));
- subval (value'range) := value;
- return to_hstring(subval);
- else
- return to_hstring (resize (value, value'high, -4));
- end if;
- else
- slv := to_sulv (value);
- if Is_X (value (value'low)) then
- lpad := (others => value(value'low));
- else
- lpad := (others => '0');
- end if;
- return to_hstring(slv(slv'high downto slv'high-VALUE'high))
- & "."
- & to_hstring(slv(slv'high-VALUE'high-1 downto 0)&lpad);
- end if;
- end if;
- end function to_hstring;
-
- function to_ostring (value : UNRESOLVED_sfixed) return STRING is
- constant ne : INTEGER := ((value'high+1)+2)/3;
- variable pad : STD_ULOGIC_VECTOR(0 to (ne*3 - (value'high+1)) - 1);
- constant lne : INTEGER := (-VALUE'low+2)/3;
- variable subval : UNRESOLVED_sfixed (value'high downto -3);
- variable lpad : STD_ULOGIC_VECTOR (0 to (lne*3 + VALUE'low) -1);
- variable slv : STD_ULOGIC_VECTOR (VALUE'high - VALUE'low downto 0);
- begin
- if value'length < 1 then
- return NUS;
- else
- if value'high < 0 then
- return to_ostring (resize (value, 2, value'low));
- elsif value'low >= 0 then
- if Is_X (value(value'low)) then
- subval := (others => value(value'low));
- subval (value'range) := value;
- return to_ostring(subval);
- else
- return to_ostring (resize (value, value'high, -3));
- end if;
- else
- pad := (others => value(value'high));
- slv := to_sulv (value);
- if Is_X (value (value'low)) then
- lpad := (others => value(value'low));
- else
- lpad := (others => '0');
- end if;
- return to_ostring(pad & slv(slv'high downto slv'high-VALUE'high))
- & "."
- & to_ostring(slv(slv'high-VALUE'high-1 downto 0) & lpad);
- end if;
- end if;
- end function to_ostring;
-
- function to_hstring (value : UNRESOLVED_sfixed) return STRING is
- constant ne : INTEGER := ((value'high+1)+3)/4;
- variable pad : STD_ULOGIC_VECTOR(0 to (ne*4 - (value'high+1)) - 1);
- constant lne : INTEGER := (-VALUE'low+3)/4;
- variable subval : UNRESOLVED_sfixed (value'high downto -4);
- variable lpad : STD_ULOGIC_VECTOR (0 to (lne*4 + VALUE'low) -1);
- variable slv : STD_ULOGIC_VECTOR (value'length-1 downto 0);
- begin
- if value'length < 1 then
- return NUS;
- else
- if value'high < 0 then
- return to_hstring (resize (value, 3, value'low));
- elsif value'low >= 0 then
- if Is_X (value(value'low)) then
- subval := (others => value(value'low));
- subval (value'range) := value;
- return to_hstring(subval);
- else
- return to_hstring (resize (value, value'high, -4));
- end if;
- else
- slv := to_sulv (value);
- pad := (others => value(value'high));
- if Is_X (value (value'low)) then
- lpad := (others => value(value'low));
- else
- lpad := (others => '0');
- end if;
- return to_hstring(pad & slv(slv'high downto slv'high-VALUE'high))
- & "."
- & to_hstring(slv(slv'high-VALUE'high-1 downto 0) & lpad);
- end if;
- end if;
- end function to_hstring;
-
- -- From string functions allow you to convert a string into a fixed
- -- point number. Example:
- -- signal uf1 : ufixed (3 downto -3);
- -- uf1 <= from_string ("0110.100", uf1'high, uf1'low); -- 6.5
- -- The "." is optional in this syntax, however it exist and is
- -- in the wrong location an error is produced. Overflow will
- -- result in saturation.
-
- function from_string (
- bstring : STRING; -- binary string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- variable L : LINE;
- variable good : BOOLEAN;
- begin
- L := new STRING'(bstring);
- read (L, result, good);
- deallocate (L);
- assert (good)
- report "fixed_pkg:"
- & "from_string: Bad string "& bstring severity error;
- return result;
- end function from_string;
-
- -- Octal and hex conversions work as follows:
- -- uf1 <= from_hstring ("6.8", 3, -3); -- 6.5 (bottom zeros dropped)
- -- uf1 <= from_ostring ("06.4", 3, -3); -- 6.5 (top zeros dropped)
- function from_ostring (
- ostring : STRING; -- Octal string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- variable L : LINE;
- variable good : BOOLEAN;
- begin
- L := new STRING'(ostring);
- oread (L, result, good);
- deallocate (L);
- assert (good)
- report "fixed_pkg:"
- & "from_ostring: Bad string "& ostring severity error;
- return result;
- end function from_ostring;
-
- function from_hstring (
- hstring : STRING; -- hex string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed is
- variable result : UNRESOLVED_ufixed (left_index downto right_index);
- variable L : LINE;
- variable good : BOOLEAN;
- begin
- L := new STRING'(hstring);
- hread (L, result, good);
- deallocate (L);
- assert (good)
- report "fixed_pkg:"
- & "from_hstring: Bad string "& hstring severity error;
- return result;
- end function from_hstring;
-
- function from_string (
- bstring : STRING; -- binary string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- variable L : LINE;
- variable good : BOOLEAN;
- begin
- L := new STRING'(bstring);
- read (L, result, good);
- deallocate (L);
- assert (good)
- report "fixed_pkg:"
- & "from_string: Bad string "& bstring severity error;
- return result;
- end function from_string;
-
- function from_ostring (
- ostring : STRING; -- Octal string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- variable L : LINE;
- variable good : BOOLEAN;
- begin
- L := new STRING'(ostring);
- oread (L, result, good);
- deallocate (L);
- assert (good)
- report "fixed_pkg:"
- & "from_ostring: Bad string "& ostring severity error;
- return result;
- end function from_ostring;
-
- function from_hstring (
- hstring : STRING; -- hex string
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed is
- variable result : UNRESOLVED_sfixed (left_index downto right_index);
- variable L : LINE;
- variable good : BOOLEAN;
- begin
- L := new STRING'(hstring);
- hread (L, result, good);
- deallocate (L);
- assert (good)
- report "fixed_pkg:"
- & "from_hstring: Bad string "& hstring severity error;
- return result;
- end function from_hstring;
-
- -- Same as above, "size_res" is used for it's range only.
- function from_string (
- bstring : STRING; -- binary string
- size_res : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- begin
- return from_string (bstring, size_res'high, size_res'low);
- end function from_string;
-
- function from_ostring (
- ostring : STRING; -- Octal string
- size_res : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- begin
- return from_ostring (ostring, size_res'high, size_res'low);
- end function from_ostring;
-
- function from_hstring (
- hstring : STRING; -- hex string
- size_res : UNRESOLVED_ufixed)
- return UNRESOLVED_ufixed is
- begin
- return from_hstring(hstring, size_res'high, size_res'low);
- end function from_hstring;
-
- function from_string (
- bstring : STRING; -- binary string
- size_res : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return from_string (bstring, size_res'high, size_res'low);
- end function from_string;
-
- function from_ostring (
- ostring : STRING; -- Octal string
- size_res : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return from_ostring (ostring, size_res'high, size_res'low);
- end function from_ostring;
-
- function from_hstring (
- hstring : STRING; -- hex string
- size_res : UNRESOLVED_sfixed)
- return UNRESOLVED_sfixed is
- begin
- return from_hstring (hstring, size_res'high, size_res'low);
- end function from_hstring;
-
- -- purpose: Calculate the string boundaries
- procedure calculate_string_boundry (
- arg : in STRING; -- input string
- left_index : out INTEGER; -- left
- right_index : out INTEGER) is -- right
- -- examples "10001.111" would return +4, -3
- -- "07X.44" would return +2, -2 (then the octal routine would multiply)
- -- "A_B_._C" would return +1, -1 (then the hex routine would multiply)
- alias xarg : STRING (arg'length downto 1) is arg; -- make it downto range
- variable l, r : INTEGER; -- internal indexes
- variable founddot : BOOLEAN := false;
- begin
- if arg'length > 0 then
- l := xarg'high - 1;
- r := 0;
- for i in xarg'range loop
- if xarg(i) = '_' then
- if r = 0 then
- l := l - 1;
- else
- r := r + 1;
- end if;
- elsif xarg(i) = ' ' or xarg(i) = NBSP or xarg(i) = HT then
- report "fixed_pkg:"
- & "Found a space in the input STRING " & xarg
- severity error;
- elsif xarg(i) = '.' then
- if founddot then
- report "fixed_pkg:"
- & "Found two binary points in input string " & xarg
- severity error;
- else
- l := l - i;
- r := -i + 1;
- founddot := true;
- end if;
- end if;
- end loop;
- left_index := l;
- right_index := r;
- else
- left_index := 0;
- right_index := 0;
- end if;
- end procedure calculate_string_boundry;
-
- -- Direct conversion functions. Example:
- -- signal uf1 : ufixed (3 downto -3);
- -- uf1 <= from_string ("0110.100"); -- 6.5
- -- In this case the "." is not optional, and the size of
- -- the output must match exactly.
- function from_string (
- bstring : STRING) -- binary string
- return UNRESOLVED_ufixed is
- variable left_index, right_index : INTEGER;
- begin
- calculate_string_boundry (bstring, left_index, right_index);
- return from_string (bstring, left_index, right_index);
- end function from_string;
-
- -- Direct octal and hex conversion functions. In this case
- -- the string lengths must match. Example:
- -- signal sf1 := sfixed (5 downto -3);
- -- sf1 <= from_ostring ("71.4") -- -6.5
- function from_ostring (
- ostring : STRING) -- Octal string
- return UNRESOLVED_ufixed is
- variable left_index, right_index : INTEGER;
- begin
- calculate_string_boundry (ostring, left_index, right_index);
- return from_ostring (ostring, ((left_index+1)*3)-1, right_index*3);
- end function from_ostring;
-
- function from_hstring (
- hstring : STRING) -- hex string
- return UNRESOLVED_ufixed is
- variable left_index, right_index : INTEGER;
- begin
- calculate_string_boundry (hstring, left_index, right_index);
- return from_hstring (hstring, ((left_index+1)*4)-1, right_index*4);
- end function from_hstring;
-
- function from_string (
- bstring : STRING) -- binary string
- return UNRESOLVED_sfixed is
- variable left_index, right_index : INTEGER;
- begin
- calculate_string_boundry (bstring, left_index, right_index);
- return from_string (bstring, left_index, right_index);
- end function from_string;
-
- function from_ostring (
- ostring : STRING) -- Octal string
- return UNRESOLVED_sfixed is
- variable left_index, right_index : INTEGER;
- begin
- calculate_string_boundry (ostring, left_index, right_index);
- return from_ostring (ostring, ((left_index+1)*3)-1, right_index*3);
- end function from_ostring;
-
- function from_hstring (
- hstring : STRING) -- hex string
- return UNRESOLVED_sfixed is
- variable left_index, right_index : INTEGER;
- begin
- calculate_string_boundry (hstring, left_index, right_index);
- return from_hstring (hstring, ((left_index+1)*4)-1, right_index*4);
- end function from_hstring;
--- pragma synthesis_on
--- rtl_synthesis on
- -- IN VHDL-2006 std_logic_vector is a subtype of std_ulogic_vector, so these
- -- extra functions are needed for compatability.
- function to_ufixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_ufixed is
- begin
- return to_ufixed (
- arg => std_ulogic_vector (arg),
- left_index => left_index,
- right_index => right_index);
- end function to_ufixed;
-
- function to_ufixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_ufixed) -- for size only
- return UNRESOLVED_ufixed is
- begin
- return to_ufixed (
- arg => std_ulogic_vector (arg),
- size_res => size_res);
- end function to_ufixed;
-
- function to_sfixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- constant left_index : INTEGER;
- constant right_index : INTEGER)
- return UNRESOLVED_sfixed is
- begin
- return to_sfixed (
- arg => std_ulogic_vector (arg),
- left_index => left_index,
- right_index => right_index);
- end function to_sfixed;
-
- function to_sfixed (
- arg : STD_LOGIC_VECTOR; -- shifted vector
- size_res : UNRESOLVED_sfixed) -- for size only
- return UNRESOLVED_sfixed is
- begin
- return to_sfixed (
- arg => std_ulogic_vector (arg),
- size_res => size_res);
- end function to_sfixed;
-
- -- unsigned fixed point
- function to_UFix (
- arg : STD_LOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_ufixed is
- begin
- return to_UFix (
- arg => std_ulogic_vector (arg),
- width => width,
- fraction => fraction);
- end function to_UFix;
-
- -- signed fixed point
- function to_SFix (
- arg : STD_LOGIC_VECTOR;
- width : NATURAL; -- width of vector
- fraction : NATURAL) -- width of fraction
- return UNRESOLVED_sfixed is
- begin
- return to_SFix (
- arg => std_ulogic_vector (arg),
- width => width,
- fraction => fraction);
- end function to_SFix;
-
-end package body fixed_pkg;
diff --git a/ieee_proposed/rtl/float_pkg_c.vhd b/ieee_proposed/rtl/float_pkg_c.vhd
deleted file mode 100644
index 8abbff6..0000000
--- a/ieee_proposed/rtl/float_pkg_c.vhd
+++ /dev/null
@@ -1,7190 +0,0 @@
--- --------------------------------------------------------------------
--- "float_pkg" package contains functions for floating point math.
--- Please see the documentation for the floating point package.
--- This package should be compiled into "ieee_proposed" and used as follows:
--- use ieee.std_logic_1164.all;
--- use ieee.numeric_std.all;
--- use ieee_proposed.fixed_float_types.all;
--- use ieee_proposed.fixed_pkg.all;
--- use ieee_proposed.float_pkg.all;
---
--- This verison is designed to work with the VHDL-93 compilers. Please
--- note the "%%%" comments. These are where we diverge from the
--- VHDL-200X LRM.
---
--- --------------------------------------------------------------------
--- Version : $Revision: 2.0 $
--- Date : $Date: 2009/01/27 20:45:30 $
--- --------------------------------------------------------------------
-
-use STD.TEXTIO.all;
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-use IEEE.NUMERIC_STD.all;
-library ieee_proposed;
-use ieee_proposed.fixed_float_types.all;
-use ieee_proposed.fixed_pkg.all;
-
-package float_pkg is
--- generic (
- -- Defaults for sizing routines, when you do a "to_float" this will be
- -- the default size. Example float32 would be 8 and 23 (8 downto -23)
- constant float_exponent_width : NATURAL := 8;
- constant float_fraction_width : NATURAL := 23;
- -- Rounding algorithm, "round_nearest" is default, other valid values
- -- are "round_zero" (truncation), "round_inf" (round up), and
- -- "round_neginf" (round down)
- constant float_round_style : round_type := round_nearest;
- -- Denormal numbers (very small numbers near zero) true or false
- constant float_denormalize : BOOLEAN := true;
- -- Turns on NAN processing (invalid numbers and overflow) true of false
- constant float_check_error : BOOLEAN := true;
- -- Guard bits are added to the bottom of every operation for rounding.
- -- any natural number (including 0) are valid.
- constant float_guard_bits : NATURAL := 3;
- -- If TRUE, then turn off warnings on "X" propagation
- constant no_warning : BOOLEAN := (false
- );
-
- -- Author David Bishop (dbishop@vhdl.org)
-
- -- Note that the size of the vector is not defined here, but in
- -- the package which calls this one.
- type UNRESOLVED_float is array (INTEGER range <>) of STD_ULOGIC; -- main type
- subtype U_float is UNRESOLVED_float;
-
- subtype float is UNRESOLVED_float;
- -----------------------------------------------------------------------------
- -- Use the float type to define your own floating point numbers.
- -- There must be a negative index or the packages will error out.
- -- Minimum supported is "subtype float7 is float (3 downto -3);"
- -- "subtype float16 is float (6 downto -9);" is probably the smallest
- -- practical one to use.
- -----------------------------------------------------------------------------
-
- -- IEEE 754 single precision
- subtype UNRESOLVED_float32 is UNRESOLVED_float (8 downto -23);
--- alias U_float32 is UNRESOLVED_float32;
- subtype float32 is float (8 downto -23);
- -----------------------------------------------------------------------------
- -- IEEE-754 single precision floating point. This is a "float"
- -- in C, and a FLOAT in Fortran. The exponent is 8 bits wide, and
- -- the fraction is 23 bits wide. This format can hold roughly 7 decimal
- -- digits. Infinity is 2**127 = 1.7E38 in this number system.
- -- The bit representation is as follows:
- -- 1 09876543 21098765432109876543210
- -- 8 76543210 12345678901234567890123
- -- 0 00000000 00000000000000000000000
- -- 8 7 0 -1 -23
- -- +/- exp. fraction
- -----------------------------------------------------------------------------
-
- -- IEEE 754 double precision
- subtype UNRESOLVED_float64 is UNRESOLVED_float (11 downto -52);
--- alias U_float64 is UNRESOLVED_float64;
- subtype float64 is float (11 downto -52);
- -----------------------------------------------------------------------------
- -- IEEE-754 double precision floating point. This is a "double float"
- -- in C, and a FLOAT*8 in Fortran. The exponent is 11 bits wide, and
- -- the fraction is 52 bits wide. This format can hold roughly 15 decimal
- -- digits. Infinity is 2**2047 in this number system.
- -- The bit representation is as follows:
- -- 3 21098765432 1098765432109876543210987654321098765432109876543210
- -- 1 09876543210 1234567890123456789012345678901234567890123456789012
- -- S EEEEEEEEEEE FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
- -- 11 10 0 -1 -52
- -- +/- exponent fraction
- -----------------------------------------------------------------------------
-
- -- IEEE 854 & C extended precision
- subtype UNRESOLVED_float128 is UNRESOLVED_float (15 downto -112);
--- alias U_float128 is UNRESOLVED_float128;
- subtype float128 is float (15 downto -112);
- -----------------------------------------------------------------------------
- -- The 128 bit floating point number is "long double" in C (on
- -- some systems this is a 70 bit floating point number) and FLOAT*32
- -- in Fortran. The exponent is 15 bits wide and the fraction is 112
- -- bits wide. This number can handle approximately 33 decimal digits.
- -- Infinity is 2**32,767 in this number system.
- -----------------------------------------------------------------------------
-
- -- purpose: Checks for a valid floating point number
- type valid_fpstate is (nan, -- Signaling NaN (C FP_NAN)
- quiet_nan, -- Quiet NaN (C FP_NAN)
- neg_inf, -- Negative infinity (C FP_INFINITE)
- neg_normal, -- negative normalized nonzero
- neg_denormal, -- negative denormalized (FP_SUBNORMAL)
- neg_zero, -- -0 (C FP_ZERO)
- pos_zero, -- +0 (C FP_ZERO)
- pos_denormal, -- Positive denormalized (FP_SUBNORMAL)
- pos_normal, -- positive normalized nonzero
- pos_inf, -- positive infinity
- isx); -- at least one input is unknown
-
- -- This deferred constant will tell you if the package body is synthesizable
- -- or implemented as real numbers.
- constant fphdlsynth_or_real : BOOLEAN; -- deferred constant
-
- -- Returns the class which X falls into
- function Classfp (
- x : UNRESOLVED_float; -- floating point input
- check_error : BOOLEAN := float_check_error) -- check for errors
- return valid_fpstate;
-
- -- Arithmetic functions, these operators do not require parameters.
- function "abs" (arg : UNRESOLVED_float) return UNRESOLVED_float;
- function "-" (arg : UNRESOLVED_float) return UNRESOLVED_float;
-
- -- These allows the base math functions to use the default values
- -- of their parameters. Thus they do full IEEE floating point.
-
- function "+" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "-" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "*" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "/" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
--- function "rem" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
--- function "mod" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
-
- -- Basic parameter list
- -- round_style - Selects the rounding algorithm to use
- -- guard - extra bits added to the end if the operation to add precision
- -- check_error - When "false" turns off NAN and overflow checks
- -- denormalize - When "false" turns off denormal number processing
-
- function add (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- function subtract (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- function multiply (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- function divide (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
--- function remainder (
--- l, r : UNRESOLVED_float; -- floating point input
--- constant round_style : round_type := float_round_style; -- rounding option
--- constant guard : NATURAL := float_guard_bits; -- number of guard bits
--- constant check_error : BOOLEAN := float_check_error; -- check for errors
--- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
--- return UNRESOLVED_float;
-
--- function modulo (
--- l, r : UNRESOLVED_float; -- floating point input
--- constant round_style : round_type := float_round_style; -- rounding option
--- constant guard : NATURAL := float_guard_bits; -- number of guard bits
--- constant check_error : BOOLEAN := float_check_error; -- check for errors
--- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
--- return UNRESOLVED_float;
-
- -- reciprocal
- function reciprocal (
- arg : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- function dividebyp2 (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- -- Multiply accumulate result = l*r + c
- function mac (
- l, r, c : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- -- Square root (all 754 based implementations need this)
--- function sqrt (
--- arg : UNRESOLVED_float; -- floating point input
--- constant round_style : round_type := float_round_style;
--- constant guard : NATURAL := float_guard_bits;
--- constant check_error : BOOLEAN := float_check_error;
--- constant denormalize : BOOLEAN := float_denormalize)
--- return UNRESOLVED_float;
-
- function Is_Negative (arg : UNRESOLVED_float) return BOOLEAN;
-
- -----------------------------------------------------------------------------
- -- compare functions
- -- =, /=, >=, <=, <, >, maximum, minimum
-
- function eq ( -- equal =
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN;
-
- function ne ( -- not equal /=
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN;
-
- function lt ( -- less than <
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN;
-
- function gt ( -- greater than >
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN;
-
- function le ( -- less than or equal to <=
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN;
-
- function ge ( -- greater than or equal to >=
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN;
-
- -- Need to overload the default versions of these
- function "=" (l, r : UNRESOLVED_float) return BOOLEAN;
- function "/=" (l, r : UNRESOLVED_float) return BOOLEAN;
- function ">=" (l, r : UNRESOLVED_float) return BOOLEAN;
- function "<=" (l, r : UNRESOLVED_float) return BOOLEAN;
- function ">" (l, r : UNRESOLVED_float) return BOOLEAN;
- function "<" (l, r : UNRESOLVED_float) return BOOLEAN;
-
- function \?=\ (l, r : UNRESOLVED_float) return STD_ULOGIC;
- function \?/=\ (l, r : UNRESOLVED_float) return STD_ULOGIC;
- function \?>\ (l, r : UNRESOLVED_float) return STD_ULOGIC;
- function \?>=\ (l, r : UNRESOLVED_float) return STD_ULOGIC;
- function \?<\ (l, r : UNRESOLVED_float) return STD_ULOGIC;
- function \?<=\ (l, r : UNRESOLVED_float) return STD_ULOGIC;
-
- function std_match (l, r : UNRESOLVED_float) return BOOLEAN;
- function find_rightmost (arg : UNRESOLVED_float; y : STD_ULOGIC)
- return INTEGER;
- function find_leftmost (arg : UNRESOLVED_float; y : STD_ULOGIC)
- return INTEGER;
- function maximum (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function minimum (l, r : UNRESOLVED_float) return UNRESOLVED_float;
-
- -- conversion functions
- -- Converts one floating point number into another.
-
- function resize (
- arg : UNRESOLVED_float; -- Floating point input
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- length of FP output fraction
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize_in : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- function resize (
- arg : UNRESOLVED_float; -- Floating point input
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize_in : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- function to_float32 (
- arg : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize_in : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float32;
-
- function to_float64 (
- arg : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize_in : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float64;
-
- function to_float128 (
- arg : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize_in : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float128;
-
- -- Converts an fp into an SLV (needed for synthesis)
- function to_slv (arg : UNRESOLVED_float) return STD_LOGIC_VECTOR;
--- alias to_StdLogicVector is to_slv [UNRESOLVED_float return STD_LOGIC_VECTOR];
--- alias to_Std_Logic_Vector is to_slv [UNRESOLVED_float return STD_LOGIC_VECTOR];
-
- -- Converts an fp into an std_ulogic_vector (sulv)
- function to_sulv (arg : UNRESOLVED_float) return STD_ULOGIC_VECTOR;
--- alias to_StdULogicVector is to_sulv [UNRESOLVED_float return STD_ULOGIC_VECTOR];
--- alias to_Std_ULogic_Vector is to_sulv [UNRESOLVED_float return STD_ULOGIC_VECTOR];
-
- -- std_ulogic_vector to float
- function to_float (
- arg : STD_ULOGIC_VECTOR;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width) -- length of FP output fraction
- return UNRESOLVED_float;
-
- -- Integer to float
- function to_float (
- arg : INTEGER;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- length of FP output fraction
- constant round_style : round_type := float_round_style) -- rounding option
- return UNRESOLVED_float;
-
- -- real to float
- function to_float (
- arg : REAL;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- length of FP output fraction
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- -- unsigned to float
- function to_float (
- arg : UNSIGNED;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- length of FP output fraction
- constant round_style : round_type := float_round_style) -- rounding option
- return UNRESOLVED_float;
-
- -- signed to float
- function to_float (
- arg : SIGNED;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- length of FP output fraction
- constant round_style : round_type := float_round_style) -- rounding option
- return UNRESOLVED_float;
-
- -- unsigned fixed point to float
- function to_float (
- arg : UNRESOLVED_ufixed; -- unsigned fixed point input
- constant exponent_width : NATURAL := float_exponent_width; -- width of exponent
- constant fraction_width : NATURAL := float_fraction_width; -- width of fraction
- constant round_style : round_type := float_round_style; -- rounding
- constant denormalize : BOOLEAN := float_denormalize) -- use ieee extensions
- return UNRESOLVED_float;
-
- -- signed fixed point to float
- function to_float (
- arg : UNRESOLVED_sfixed;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- length of FP output fraction
- constant round_style : round_type := float_round_style; -- rounding
- constant denormalize : BOOLEAN := float_denormalize) -- rounding option
- return UNRESOLVED_float;
-
- -- size_res functions
- -- Integer to float
- function to_float (
- arg : INTEGER;
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style) -- rounding option
- return UNRESOLVED_float;
-
- -- real to float
- function to_float (
- arg : REAL;
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- -- unsigned to float
- function to_float (
- arg : UNSIGNED;
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style) -- rounding option
- return UNRESOLVED_float;
-
- -- signed to float
- function to_float (
- arg : SIGNED;
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style) -- rounding option
- return UNRESOLVED_float;
-
- -- sulv to float
- function to_float (
- arg : STD_ULOGIC_VECTOR;
- size_res : UNRESOLVED_float)
- return UNRESOLVED_float;
-
- -- unsigned fixed point to float
- function to_float (
- arg : UNRESOLVED_ufixed; -- unsigned fixed point input
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding
- constant denormalize : BOOLEAN := float_denormalize) -- use ieee extensions
- return UNRESOLVED_float;
-
- -- signed fixed point to float
- function to_float (
- arg : UNRESOLVED_sfixed;
- size_res : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding
- constant denormalize : BOOLEAN := float_denormalize) -- rounding option
- return UNRESOLVED_float;
-
- -- float to unsigned
- function to_unsigned (
- arg : UNRESOLVED_float; -- floating point input
- constant size : NATURAL; -- length of output
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error) -- check for errors
- return UNSIGNED;
-
- -- float to signed
- function to_signed (
- arg : UNRESOLVED_float; -- floating point input
- constant size : NATURAL; -- length of output
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error) -- check for errors
- return SIGNED;
-
- -- purpose: Converts a float to unsigned fixed point
- function to_ufixed (
- arg : UNRESOLVED_float; -- fp input
- constant left_index : INTEGER; -- integer part
- constant right_index : INTEGER; -- fraction part
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style; -- saturate
- constant round_style : fixed_round_style_type := fixed_round_style; -- rounding
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize)
- return UNRESOLVED_ufixed;
-
- -- float to signed fixed point
- function to_sfixed (
- arg : UNRESOLVED_float; -- fp input
- constant left_index : INTEGER; -- integer part
- constant right_index : INTEGER; -- fraction part
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style; -- saturate
- constant round_style : fixed_round_style_type := fixed_round_style; -- rounding
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize)
- return UNRESOLVED_sfixed;
-
- -- size_res versions
- -- float to unsigned
- function to_unsigned (
- arg : UNRESOLVED_float; -- floating point input
- size_res : UNSIGNED;
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error) -- check for errors
- return UNSIGNED;
-
- -- float to signed
- function to_signed (
- arg : UNRESOLVED_float; -- floating point input
- size_res : SIGNED;
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error) -- check for errors
- return SIGNED;
-
- -- purpose: Converts a float to unsigned fixed point
- function to_ufixed (
- arg : UNRESOLVED_float; -- fp input
- size_res : UNRESOLVED_ufixed;
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style; -- saturate
- constant round_style : fixed_round_style_type := fixed_round_style; -- rounding
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize)
- return UNRESOLVED_ufixed;
-
- -- float to signed fixed point
- function to_sfixed (
- arg : UNRESOLVED_float; -- fp input
- size_res : UNRESOLVED_sfixed;
- constant overflow_style : fixed_overflow_style_type := fixed_overflow_style; -- saturate
- constant round_style : fixed_round_style_type := fixed_round_style; -- rounding
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize)
- return UNRESOLVED_sfixed;
-
- -- float to real
- function to_real (
- arg : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return REAL;
-
- -- float to integer
- function to_integer (
- arg : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error) -- check for errors
- return INTEGER;
-
- -- For Verilog compatability
- function realtobits (arg : REAL) return STD_ULOGIC_VECTOR;
- function bitstoreal (arg : STD_ULOGIC_VECTOR) return REAL;
-
- -- Maps metalogical values
- function to_01 (
- arg : UNRESOLVED_float; -- floating point input
- XMAP : STD_LOGIC := '0')
- return UNRESOLVED_float;
-
- function Is_X (arg : UNRESOLVED_float) return BOOLEAN;
- function to_X01 (arg : UNRESOLVED_float) return UNRESOLVED_float;
- function to_X01Z (arg : UNRESOLVED_float) return UNRESOLVED_float;
- function to_UX01 (arg : UNRESOLVED_float) return UNRESOLVED_float;
-
- -- These two procedures were copied out of the body because they proved
- -- very useful for vendor specific algorithm development
- -- Break_number converts a floating point number into it's parts
- -- Exponent is biased by -1
-
- procedure break_number (
- arg : in UNRESOLVED_float;
- denormalize : in BOOLEAN := float_denormalize;
- check_error : in BOOLEAN := float_check_error;
- fract : out UNSIGNED;
- expon : out SIGNED; -- NOTE: Add 1 to get the real exponent!
- sign : out STD_ULOGIC);
-
- procedure break_number (
- arg : in UNRESOLVED_float;
- denormalize : in BOOLEAN := float_denormalize;
- check_error : in BOOLEAN := float_check_error;
- fract : out ufixed; -- a number between 1.0 and 2.0
- expon : out SIGNED; -- NOTE: Add 1 to get the real exponent!
- sign : out STD_ULOGIC);
-
- -- Normalize takes a fraction and and exponent and converts them into
- -- a floating point number. Does the shifting and the rounding.
- -- Exponent is assumed to be biased by -1
-
- function normalize (
- fract : UNSIGNED; -- fraction, unnormalized
- expon : SIGNED; -- exponent - 1, normalized
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- constant exponent_width : NATURAL := float_exponent_width; -- size of output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- size of output fraction
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float;
-
- -- Exponent is assumed to be biased by -1
- function normalize (
- fract : ufixed; -- unsigned fixed point
- expon : SIGNED; -- exponent - 1, normalized
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- constant exponent_width : NATURAL := float_exponent_width; -- size of output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- size of output fraction
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float;
-
- function normalize (
- fract : UNSIGNED; -- unsigned
- expon : SIGNED; -- exponent - 1, normalized
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- size_res : UNRESOLVED_float; -- used for sizing only
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float;
-
- -- Exponent is assumed to be biased by -1
- function normalize (
- fract : ufixed; -- unsigned fixed point
- expon : SIGNED; -- exponent - 1, normalized
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- size_res : UNRESOLVED_float; -- used for sizing only
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float;
-
- -- overloaded versions
- function "+" (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
- function "+" (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "+" (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
- function "+" (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "-" (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
- function "-" (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "-" (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
- function "-" (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "*" (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
- function "*" (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "*" (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
- function "*" (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "/" (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
- function "/" (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
- function "/" (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
- function "/" (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
--- function "rem" (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
--- function "rem" (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
--- function "rem" (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
--- function "rem" (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
--- function "mod" (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
--- function "mod" (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
--- function "mod" (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
--- function "mod" (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
-
- -- overloaded compare functions
- function "=" (l : UNRESOLVED_float; r : REAL) return BOOLEAN;
- function "/=" (l : UNRESOLVED_float; r : REAL) return BOOLEAN;
- function ">=" (l : UNRESOLVED_float; r : REAL) return BOOLEAN;
- function "<=" (l : UNRESOLVED_float; r : REAL) return BOOLEAN;
- function ">" (l : UNRESOLVED_float; r : REAL) return BOOLEAN;
- function "<" (l : UNRESOLVED_float; r : REAL) return BOOLEAN;
- function "=" (l : REAL; r : UNRESOLVED_float) return BOOLEAN;
- function "/=" (l : REAL; r : UNRESOLVED_float) return BOOLEAN;
- function ">=" (l : REAL; r : UNRESOLVED_float) return BOOLEAN;
- function "<=" (l : REAL; r : UNRESOLVED_float) return BOOLEAN;
- function ">" (l : REAL; r : UNRESOLVED_float) return BOOLEAN;
- function "<" (l : REAL; r : UNRESOLVED_float) return BOOLEAN;
- function "=" (l : UNRESOLVED_float; r : INTEGER) return BOOLEAN;
- function "/=" (l : UNRESOLVED_float; r : INTEGER) return BOOLEAN;
- function ">=" (l : UNRESOLVED_float; r : INTEGER) return BOOLEAN;
- function "<=" (l : UNRESOLVED_float; r : INTEGER) return BOOLEAN;
- function ">" (l : UNRESOLVED_float; r : INTEGER) return BOOLEAN;
- function "<" (l : UNRESOLVED_float; r : INTEGER) return BOOLEAN;
- function "=" (l : INTEGER; r : UNRESOLVED_float) return BOOLEAN;
- function "/=" (l : INTEGER; r : UNRESOLVED_float) return BOOLEAN;
- function ">=" (l : INTEGER; r : UNRESOLVED_float) return BOOLEAN;
- function "<=" (l : INTEGER; r : UNRESOLVED_float) return BOOLEAN;
- function ">" (l : INTEGER; r : UNRESOLVED_float) return BOOLEAN;
- function "<" (l : INTEGER; r : UNRESOLVED_float) return BOOLEAN;
- function \?=\ (l : UNRESOLVED_float; r : REAL) return STD_ULOGIC;
- function \?/=\ (l : UNRESOLVED_float; r : REAL) return STD_ULOGIC;
- function \?>\ (l : UNRESOLVED_float; r : REAL) return STD_ULOGIC;
- function \?>=\ (l : UNRESOLVED_float; r : REAL) return STD_ULOGIC;
- function \?<\ (l : UNRESOLVED_float; r : REAL) return STD_ULOGIC;
- function \?<=\ (l : UNRESOLVED_float; r : REAL) return STD_ULOGIC;
- function \?=\ (l : REAL; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?/=\ (l : REAL; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?>\ (l : REAL; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?>=\ (l : REAL; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?<\ (l : REAL; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?<=\ (l : REAL; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?=\ (l : UNRESOLVED_float; r : INTEGER) return STD_ULOGIC;
- function \?/=\ (l : UNRESOLVED_float; r : INTEGER) return STD_ULOGIC;
- function \?>\ (l : UNRESOLVED_float; r : INTEGER) return STD_ULOGIC;
- function \?>=\ (l : UNRESOLVED_float; r : INTEGER) return STD_ULOGIC;
- function \?<\ (l : UNRESOLVED_float; r : INTEGER) return STD_ULOGIC;
- function \?<=\ (l : UNRESOLVED_float; r : INTEGER) return STD_ULOGIC;
- function \?=\ (l : INTEGER; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?/=\ (l : INTEGER; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?>\ (l : INTEGER; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?>=\ (l : INTEGER; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?<\ (l : INTEGER; r : UNRESOLVED_float) return STD_ULOGIC;
- function \?<=\ (l : INTEGER; r : UNRESOLVED_float) return STD_ULOGIC;
- -- minimum and maximum overloads
- function maximum (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
- function minimum (l : UNRESOLVED_float; r : REAL) return UNRESOLVED_float;
- function maximum (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
- function minimum (l : REAL; r : UNRESOLVED_float) return UNRESOLVED_float;
- function maximum (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
- function minimum (l : UNRESOLVED_float; r : INTEGER) return UNRESOLVED_float;
- function maximum (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
- function minimum (l : INTEGER; r : UNRESOLVED_float) return UNRESOLVED_float;
-----------------------------------------------------------------------------
- -- logical functions
- ----------------------------------------------------------------------------
-
- function "not" (l : UNRESOLVED_float) return UNRESOLVED_float;
- function "and" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "or" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "nand" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "nor" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "xor" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- function "xnor" (l, r : UNRESOLVED_float) return UNRESOLVED_float;
- -- Vector and std_ulogic functions, same as functions in numeric_std
- function "and" (l : STD_ULOGIC; r : UNRESOLVED_float)
- return UNRESOLVED_float;
- function "and" (l : UNRESOLVED_float; r : STD_ULOGIC)
- return UNRESOLVED_float;
- function "or" (l : STD_ULOGIC; r : UNRESOLVED_float)
- return UNRESOLVED_float;
- function "or" (l : UNRESOLVED_float; r : STD_ULOGIC)
- return UNRESOLVED_float;
- function "nand" (l : STD_ULOGIC; r : UNRESOLVED_float)
- return UNRESOLVED_float;
- function "nand" (l : UNRESOLVED_float; r : STD_ULOGIC)
- return UNRESOLVED_float;
- function "nor" (l : STD_ULOGIC; r : UNRESOLVED_float)
- return UNRESOLVED_float;
- function "nor" (l : UNRESOLVED_float; r : STD_ULOGIC)
- return UNRESOLVED_float;
- function "xor" (l : STD_ULOGIC; r : UNRESOLVED_float)
- return UNRESOLVED_float;
- function "xor" (l : UNRESOLVED_float; r : STD_ULOGIC)
- return UNRESOLVED_float;
- function "xnor" (l : STD_ULOGIC; r : UNRESOLVED_float)
- return UNRESOLVED_float;
- function "xnor" (l : UNRESOLVED_float; r : STD_ULOGIC)
- return UNRESOLVED_float;
- -- Reduction operators, same as numeric_std functions
- function and_reduce (l : UNRESOLVED_float) return STD_ULOGIC;
- function nand_reduce (l : UNRESOLVED_float) return STD_ULOGIC;
- function or_reduce (l : UNRESOLVED_float) return STD_ULOGIC;
- function nor_reduce (l : UNRESOLVED_float) return STD_ULOGIC;
- function xor_reduce (l : UNRESOLVED_float) return STD_ULOGIC;
- function xnor_reduce (l : UNRESOLVED_float) return STD_ULOGIC;
-
- -- Note: "sla", "sra", "sll", "slr", "rol" and "ror" not implemented.
-
- -----------------------------------------------------------------------------
- -- Recommended Functions from the IEEE 754 Appendix
- -----------------------------------------------------------------------------
-
- -- returns x with the sign of y.
- function Copysign (x, y : UNRESOLVED_float) return UNRESOLVED_float;
-
- -- Returns y * 2**n for integral values of N without computing 2**n
- function Scalb (
- y : UNRESOLVED_float; -- floating point input
- N : INTEGER; -- exponent to add
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- -- Returns y * 2**n for integral values of N without computing 2**n
- function Scalb (
- y : UNRESOLVED_float; -- floating point input
- N : SIGNED; -- exponent to add
- constant round_style : round_type := float_round_style; -- rounding option
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float;
-
- -- returns the unbiased exponent of x
- function Logb (x : UNRESOLVED_float) return INTEGER;
- function Logb (x : UNRESOLVED_float) return SIGNED;
-
- -- returns the next representable neighbor of x in the direction toward y
--- function Nextafter (
--- x, y : UNRESOLVED_float; -- floating point input
--- constant check_error : BOOLEAN := float_check_error; -- check for errors
--- constant denormalize : BOOLEAN := float_denormalize)
--- return UNRESOLVED_float;
-
- -- Returns TRUE if X is unordered with Y.
- function Unordered (x, y : UNRESOLVED_float) return BOOLEAN;
- function Finite (x : UNRESOLVED_float) return BOOLEAN;
- function Isnan (x : UNRESOLVED_float) return BOOLEAN;
-
- -- Function to return constants.
- function zerofp (
- constant exponent_width : NATURAL := float_exponent_width; -- exponent
- constant fraction_width : NATURAL := float_fraction_width) -- fraction
- return UNRESOLVED_float;
- function nanfp (
- constant exponent_width : NATURAL := float_exponent_width; -- exponent
- constant fraction_width : NATURAL := float_fraction_width) -- fraction
- return UNRESOLVED_float;
- function qnanfp (
- constant exponent_width : NATURAL := float_exponent_width; -- exponent
- constant fraction_width : NATURAL := float_fraction_width) -- fraction
- return UNRESOLVED_float;
- function pos_inffp (
- constant exponent_width : NATURAL := float_exponent_width; -- exponent
- constant fraction_width : NATURAL := float_fraction_width) -- fraction
- return UNRESOLVED_float;
- function neg_inffp (
- constant exponent_width : NATURAL := float_exponent_width; -- exponent
- constant fraction_width : NATURAL := float_fraction_width) -- fraction
- return UNRESOLVED_float;
- function neg_zerofp (
- constant exponent_width : NATURAL := float_exponent_width; -- exponent
- constant fraction_width : NATURAL := float_fraction_width) -- fraction
- return UNRESOLVED_float;
- -- size_res versions
- function zerofp (
- size_res : UNRESOLVED_float) -- variable is only use for sizing
- return UNRESOLVED_float;
- function nanfp (
- size_res : UNRESOLVED_float) -- variable is only use for sizing
- return UNRESOLVED_float;
- function qnanfp (
- size_res : UNRESOLVED_float) -- variable is only use for sizing
- return UNRESOLVED_float;
- function pos_inffp (
- size_res : UNRESOLVED_float) -- variable is only use for sizing
- return UNRESOLVED_float;
- function neg_inffp (
- size_res : UNRESOLVED_float) -- variable is only use for sizing
- return UNRESOLVED_float;
- function neg_zerofp (
- size_res : UNRESOLVED_float) -- variable is only use for sizing
- return UNRESOLVED_float;
-
- -- ===========================================================================
- -- string and textio Functions
- -- ===========================================================================
--- rtl_synthesis off
--- pragma synthesis_off
- -- writes S:EEEE:FFFFFFFF
- procedure WRITE (
- L : inout LINE; -- access type (pointer)
- VALUE : in UNRESOLVED_float; -- value to write
- JUSTIFIED : in SIDE := right; -- which side to justify text
- FIELD : in WIDTH := 0); -- width of field
-
- -- Reads SEEEEFFFFFFFF, "." and ":" are ignored
- procedure READ (L : inout LINE; VALUE : out UNRESOLVED_float);
- procedure READ (L : inout LINE; VALUE : out UNRESOLVED_float;
- GOOD : out BOOLEAN);
-
- alias BREAD is READ [LINE, UNRESOLVED_float, BOOLEAN];
- alias BREAD is READ [LINE, UNRESOLVED_float];
- alias BWRITE is WRITE [LINE, UNRESOLVED_float, SIDE, WIDTH];
- alias BINARY_READ is READ [LINE, UNRESOLVED_FLOAT, BOOLEAN];
- alias BINARY_READ is READ [LINE, UNRESOLVED_FLOAT];
- alias BINARY_WRITE is WRITE [LINE, UNRESOLVED_float, SIDE, WIDTH];
-
- procedure OWRITE (
- L : inout LINE; -- access type (pointer)
- VALUE : in UNRESOLVED_float; -- value to write
- JUSTIFIED : in SIDE := right; -- which side to justify text
- FIELD : in WIDTH := 0); -- width of field
-
- -- Octal read with padding, no separators used
- procedure OREAD (L : inout LINE; VALUE : out UNRESOLVED_float);
- procedure OREAD (L : inout LINE; VALUE : out UNRESOLVED_float;
- GOOD : out BOOLEAN);
- alias OCTAL_READ is OREAD [LINE, UNRESOLVED_FLOAT, BOOLEAN];
- alias OCTAL_READ is OREAD [LINE, UNRESOLVED_FLOAT];
- alias OCTAL_WRITE is OWRITE [LINE, UNRESOLVED_FLOAT, SIDE, WIDTH];
-
- -- Hex write with padding, no separators
- procedure HWRITE (
- L : inout LINE; -- access type (pointer)
- VALUE : in UNRESOLVED_float; -- value to write
- JUSTIFIED : in SIDE := right; -- which side to justify text
- FIELD : in WIDTH := 0); -- width of field
-
- -- Hex read with padding, no separators used
- procedure HREAD (L : inout LINE; VALUE : out UNRESOLVED_float);
- procedure HREAD (L : inout LINE; VALUE : out UNRESOLVED_float;
- GOOD : out BOOLEAN);
- alias HEX_READ is HREAD [LINE, UNRESOLVED_FLOAT, BOOLEAN];
- alias HEX_READ is HREAD [LINE, UNRESOLVED_FLOAT];
- alias HEX_WRITE is HWRITE [LINE, UNRESOLVED_FLOAT, SIDE, WIDTH];
-
- -- returns "S:EEEE:FFFFFFFF"
- function to_string (value : UNRESOLVED_float) return STRING;
- alias TO_BSTRING is TO_STRING [UNRESOLVED_FLOAT return STRING];
- alias TO_BINARY_STRING is TO_STRING [UNRESOLVED_FLOAT return STRING];
-
- -- Returns a HEX string, with padding
- function to_hstring (value : UNRESOLVED_float) return STRING;
- alias TO_HEX_STRING is TO_HSTRING [UNRESOLVED_FLOAT return STRING];
-
- -- Returns and octal string, with padding
- function to_ostring (value : UNRESOLVED_float) return STRING;
- alias TO_OCTAL_STRING is TO_OSTRING [UNRESOLVED_FLOAT return STRING];
-
- function from_string (
- bstring : STRING; -- binary string
- constant exponent_width : NATURAL := float_exponent_width;
- constant fraction_width : NATURAL := float_fraction_width)
- return UNRESOLVED_float;
- alias from_bstring is from_string [STRING, NATURAL, NATURAL
- return UNRESOLVED_float];
- alias from_binary_string is from_string [STRING, NATURAL, NATURAL
- return UNRESOLVED_float];
- function from_ostring (
- ostring : STRING; -- Octal string
- constant exponent_width : NATURAL := float_exponent_width;
- constant fraction_width : NATURAL := float_fraction_width)
- return UNRESOLVED_float;
- alias from_octal_string is from_ostring [STRING, NATURAL, NATURAL
- return UNRESOLVED_float];
-
- function from_hstring (
- hstring : STRING; -- hex string
- constant exponent_width : NATURAL := float_exponent_width;
- constant fraction_width : NATURAL := float_fraction_width)
- return UNRESOLVED_float;
- alias from_hex_string is from_hstring [STRING, NATURAL, NATURAL
- return UNRESOLVED_float];
-
- function from_string (
- bstring : STRING; -- binary string
- size_res : UNRESOLVED_float) -- used for sizing only
- return UNRESOLVED_float;
- alias from_bstring is from_string [STRING, UNRESOLVED_float
- return UNRESOLVED_float];
- alias from_binary_string is from_string [STRING, UNRESOLVED_float
- return UNRESOLVED_float];
-
- function from_ostring (
- ostring : STRING; -- Octal string
- size_res : UNRESOLVED_float) -- used for sizing only
- return UNRESOLVED_float;
- alias from_octal_string is from_ostring [STRING, UNRESOLVED_float
- return UNRESOLVED_float];
-
- function from_hstring (
- hstring : STRING; -- hex string
- size_res : UNRESOLVED_float) -- used for sizing only
- return UNRESOLVED_float;
- alias from_hex_string is from_hstring [STRING, UNRESOLVED_float
- return UNRESOLVED_float];
--- rtl_synthesis on
--- pragma synthesis_on
- -- IN VHDL-2006 std_logic_vector is a subtype of std_ulogic_vector, so these
- -- extra functions are needed for compatability.
- function to_float (
- arg : STD_LOGIC_VECTOR;
- constant exponent_width : NATURAL := float_exponent_width; -- length of FP output exponent
- constant fraction_width : NATURAL := float_fraction_width) -- length of FP output fraction
- return UNRESOLVED_float;
-
- function to_float (
- arg : STD_LOGIC_VECTOR;
- size_res : UNRESOLVED_float)
- return UNRESOLVED_float;
-
- -- For Verilog compatability
- function realtobits (arg : REAL) return STD_LOGIC_VECTOR;
- function bitstoreal (arg : STD_LOGIC_VECTOR) return REAL;
-
-end package float_pkg;
--------------------------------------------------------------------------------
--- Proposed package body for the VHDL-200x-FT float_pkg package
--- This version is optimized for Synthesis, and not for simulation.
--- Note that there are functional differences between the synthesis and
--- simulation packages bodies. The Synthesis version is preferred.
--- This package body supplies a recommended implementation of these functions
--- Version : $Revision: 2.0 $
--- Date : $Date: 2009/01/27 20:45:30 $
---
--- Created for VHDL-200X par, David Bishop (dbishop@vhdl.org)
--------------------------------------------------------------------------------
-
-package body float_pkg is
-
- -- Author David Bishop (dbishop@vhdl.org)
- -----------------------------------------------------------------------------
- -- type declarations
- -----------------------------------------------------------------------------
-
- -- This deferred constant will tell you if the package body is synthesizable
- -- or implemented as real numbers, set to "true" if synthesizable.
- constant fphdlsynth_or_real : BOOLEAN := true; -- deferred constant
-
- -- types of boundary conditions
- type boundary_type is (normal, infinity, zero, denormal);
-
- -- null range array constant
- constant NAFP : UNRESOLVED_float (0 downto 1) := (others => '0');
- constant NSLV : STD_ULOGIC_VECTOR (0 downto 1) := (others => '0');
-
- -- %%% Replicated functions
- -- These functions are replicated so that we don't need to reference the new
- -- 2006 package std.standard, std_logic_1164 and numeric_std.
- function maximum (
- l, r : INTEGER) -- inputs
- return INTEGER is
- begin -- function max
- if l > r then return l;
- else return r;
- end if;
- end function maximum;
-
- function minimum (
- l, r : INTEGER) -- inputs
- return INTEGER is
- begin -- function min
- if l > r then return r;
- else return l;
- end if;
- end function minimum;
-
- function or_reduce (arg : STD_ULOGIC_VECTOR)
- return STD_LOGIC is
- variable Upper, Lower : STD_ULOGIC;
- variable Half : INTEGER;
- variable BUS_int : STD_ULOGIC_VECTOR (arg'length - 1 downto 0);
- variable Result : STD_ULOGIC;
- begin
- if (arg'length < 1) then -- In the case of a NULL range
- Result := '0';
- else
- BUS_int := to_ux01 (arg);
- if (BUS_int'length = 1) then
- Result := BUS_int (BUS_int'left);
- elsif (BUS_int'length = 2) then
- Result := BUS_int (BUS_int'right) or BUS_int (BUS_int'left);
- else
- Half := (BUS_int'length + 1) / 2 + BUS_int'right;
- Upper := or_reduce (BUS_int (BUS_int'left downto Half));
- Lower := or_reduce (BUS_int (Half - 1 downto BUS_int'right));
- Result := Upper or Lower;
- end if;
- end if;
- return Result;
- end function or_reduce;
-
- function or_reduce (arg : UNSIGNED)
- return STD_ULOGIC is
- begin
- return or_reduce (STD_ULOGIC_VECTOR (arg));
- end function or_reduce;
-
- function or_reduce (arg : SIGNED)
- return STD_ULOGIC is
- begin
- return or_reduce (STD_ULOGIC_VECTOR (arg));
- end function or_reduce;
-
- function or_reduce (arg : STD_LOGIC_VECTOR)
- return STD_ULOGIC is
- begin
- return or_reduce (STD_ULOGIC_VECTOR (arg));
- end function or_reduce;
-
- -- purpose: AND all of the bits in a vector together
- -- This is a copy of the proposed "and_reduce" from 1076.3
- function and_reduce (arg : STD_ULOGIC_VECTOR)
- return STD_LOGIC is
- variable Upper, Lower : STD_ULOGIC;
- variable Half : INTEGER;
- variable BUS_int : STD_ULOGIC_VECTOR (arg'length - 1 downto 0);
- variable Result : STD_ULOGIC;
- begin
- if (arg'length < 1) then -- In the case of a NULL range
- Result := '1';
- else
- BUS_int := to_ux01 (arg);
- if (BUS_int'length = 1) then
- Result := BUS_int (BUS_int'left);
- elsif (BUS_int'length = 2) then
- Result := BUS_int (BUS_int'right) and BUS_int (BUS_int'left);
- else
- Half := (BUS_int'length + 1) / 2 + BUS_int'right;
- Upper := and_reduce (BUS_int (BUS_int'left downto Half));
- Lower := and_reduce (BUS_int (Half - 1 downto BUS_int'right));
- Result := Upper and Lower;
- end if;
- end if;
- return Result;
- end function and_reduce;
-
- function and_reduce (arg : UNSIGNED)
- return STD_ULOGIC is
- begin
- return and_reduce (STD_ULOGIC_VECTOR (arg));
- end function and_reduce;
-
- function and_reduce (arg : SIGNED)
- return STD_ULOGIC is
- begin
- return and_reduce (STD_ULOGIC_VECTOR (arg));
- end function and_reduce;
-
- function xor_reduce (arg : STD_ULOGIC_VECTOR) return STD_ULOGIC is
- variable Upper, Lower : STD_ULOGIC;
- variable Half : INTEGER;
- variable BUS_int : STD_ULOGIC_VECTOR (arg'length - 1 downto 0);
- variable Result : STD_ULOGIC := '0'; -- In the case of a NULL range
- begin
- if (arg'length >= 1) then
- BUS_int := to_ux01 (arg);
- if (BUS_int'length = 1) then
- Result := BUS_int (BUS_int'left);
- elsif (BUS_int'length = 2) then
- Result := BUS_int(BUS_int'right) xor BUS_int(BUS_int'left);
- else
- Half := (BUS_int'length + 1) / 2 + BUS_int'right;
- Upper := xor_reduce (BUS_int (BUS_int'left downto Half));
- Lower := xor_reduce (BUS_int (Half - 1 downto BUS_int'right));
- Result := Upper xor Lower;
- end if;
- end if;
- return Result;
- end function xor_reduce;
-
- function nand_reduce(arg : STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return not and_reduce (arg);
- end function nand_reduce;
-
- function nor_reduce(arg : STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return not or_reduce (arg);
- end function nor_reduce;
-
- function xnor_reduce(arg : STD_ULOGIC_VECTOR) return STD_ULOGIC is
- begin
- return not xor_reduce (arg);
- end function xnor_reduce;
-
- function find_leftmost (ARG : UNSIGNED; Y : STD_ULOGIC)
- return INTEGER is
- begin
- for INDEX in ARG'range loop
- if ARG(INDEX) = Y then
- return INDEX;
- end if;
- end loop;
- return -1;
- end function find_leftmost;
-
- -- Match table, copied form new std_logic_1164
--- type stdlogic_table is array(STD_ULOGIC, STD_ULOGIC) of STD_ULOGIC;
--- constant match_logic_table : stdlogic_table := (
--- -----------------------------------------------------
--- -- U X 0 1 Z W L H - | |
--- -----------------------------------------------------
--- ('U', 'U', 'U', 'U', 'U', 'U', 'U', 'U', '1'), -- | U |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '1'), -- | X |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '1'), -- | 0 |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '1'), -- | 1 |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '1'), -- | Z |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '1'), -- | W |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '1'), -- | L |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '1'), -- | H |
--- ('1', '1', '1', '1', '1', '1', '1', '1', '1') -- | - |
--- );
-
--- constant no_match_logic_table : stdlogic_table := (
--- -----------------------------------------------------
--- -- U X 0 1 Z W L H - | |
--- -----------------------------------------------------
--- ('U', 'U', 'U', 'U', 'U', 'U', 'U', 'U', '0'), -- | U |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '0'), -- | X |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '0'), -- | 0 |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '0'), -- | 1 |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '0'), -- | Z |
--- ('U', 'X', 'X', 'X', 'X', 'X', 'X', 'X', '0'), -- | W |
--- ('U', 'X', '0', '1', 'X', 'X', '0', '1', '0'), -- | L |
--- ('U', 'X', '1', '0', 'X', 'X', '1', '0', '0'), -- | H |
--- ('0', '0', '0', '0', '0', '0', '0', '0', '0') -- | - |
--- );
-
- -------------------------------------------------------------------
- -- ?= functions, Similar to "std_match", but returns "std_ulogic".
- -------------------------------------------------------------------
- -- %%% FUNCTION "?=" ( l, r : std_ulogic ) RETURN std_ulogic IS
- function \?=\ (l, r : STD_ULOGIC) return STD_ULOGIC is
- variable lx, rx : STD_ULOGIC;
- begin
--- return match_logic_table (l, r);
- lx := to_x01(l);
- rx := to_x01(r);
- if lx = 'X' or rx = 'X' then
- return 'X';
- elsif lx = rx then
- return '1';
- else
- return '0';
- end if;
- end function \?=\;
- function \?/=\ (l, r : STD_ULOGIC) return STD_ULOGIC is
- begin
--- return no_match_logic_table (l, r);
- return not \?=\ (l, r);
- end function \?/=\;
-
--- -- %%% FUNCTION "?=" ( l, r : std_logic_vector ) RETURN std_ulogic IS
--- function \?=\ (l, r : STD_LOGIC_VECTOR) return STD_ULOGIC is
--- alias lv : STD_LOGIC_VECTOR(1 to l'length) is l;
--- alias rv : STD_LOGIC_VECTOR(1 to r'length) is r;
--- variable result, result1 : STD_ULOGIC; -- result
--- begin
--- -- Logically identical to an "=" operator.
--- if ((l'length < 1) or (r'length < 1)) then
--- report "STD_LOGIC_1164.""?="": null detected, returning X"
--- severity warning;
--- return 'X';
--- end if;
--- if lv'length /= rv'length then
--- report "STD_LOGIC_1164.""?="": L'LENGTH /= R'LENGTH, returning X"
--- severity warning;
--- return 'X';
--- else
--- result := '1';
--- for i in lv'low to lv'high loop
--- result1 := match_logic_table(lv(i), rv(i));
--- if result1 = 'U' then
--- return 'U';
--- elsif result1 = 'X' or result = 'X' then
--- result := 'X';
--- else
--- result := result and result1;
--- end if;
--- end loop;
--- return result;
--- end if;
--- end function \?=\;
--- -- %%% END FUNCTION "?=";
--- -------------------------------------------------------------------
--- -- %%% FUNCTION "?=" ( l, r : std_ulogic_vector ) RETURN std_ulogic IS
- function \?=\ (l, r : STD_ULOGIC_VECTOR) return STD_ULOGIC is
- alias lv : STD_ULOGIC_VECTOR(1 to l'length) is l;
- alias rv : STD_ULOGIC_VECTOR(1 to r'length) is r;
- variable result, result1 : STD_ULOGIC;
- begin
- if ((l'length < 1) or (r'length < 1)) then
- report "STD_LOGIC_1164.""?="": null detected, returning X"
- severity warning;
- return 'X';
- end if;
- if lv'length /= rv'length then
- report "STD_LOGIC_1164.""?="": L'LENGTH /= R'LENGTH, returning X"
- severity warning;
- return 'X';
- else
- result := '1';
- for i in lv'low to lv'high loop
- result1 := \?=\ (lv(i), rv(i));
- if result1 = 'U' then
- return 'U';
- elsif result1 = 'X' or result = 'X' then
- result := 'X';
- else
- result := result and result1;
- end if;
- end loop;
- return result;
- end if;
- end function \?=\;
-
- function Is_X (s : UNSIGNED) return BOOLEAN is
- begin
- return Is_X (STD_LOGIC_VECTOR (s));
- end function Is_X;
-
- function Is_X (s : SIGNED) return BOOLEAN is
- begin
- return Is_X (STD_LOGIC_VECTOR (s));
- end function Is_X;
--- %%% END replicated functions
-
- -- Special version of "minimum" to do some boundary checking
- function mine (L, R : INTEGER)
- return INTEGER is
- begin -- function minimum
- if (L = INTEGER'low or R = INTEGER'low) then
- report "float_pkg:"
- & " Unbounded number passed, was a literal used?"
- severity error;
- return 0;
- end if;
- return minimum (L, R);
- end function mine;
-
- -- Generates the base number for the exponent normalization offset.
- function gen_expon_base (
- constant exponent_width : NATURAL)
- return SIGNED is
- variable result : SIGNED (exponent_width-1 downto 0);
- begin
- result := (others => '1');
- result (exponent_width-1) := '0';
- return result;
- end function gen_expon_base;
-
- -- Integer version of the "log2" command (contributed by Peter Ashenden)
- function log2 (A : NATURAL) return NATURAL is
- variable quotient : NATURAL;
- variable result : NATURAL := 0;
- begin
- quotient := A / 2;
- while quotient > 0 loop
- quotient := quotient / 2;
- result := result + 1;
- end loop;
- return result;
- end function log2;
-
- -- Function similar to the ILOGB function in MATH_REAL
- function log2 (A : REAL) return INTEGER is
- variable Y : REAL;
- variable N : INTEGER := 0;
- begin
- if (A = 1.0 or A = 0.0) then
- return 0;
- end if;
- Y := A;
- if(A > 1.0) then
- while Y >= 2.0 loop
- Y := Y / 2.0;
- N := N + 1;
- end loop;
- return N;
- end if;
- -- O < Y < 1
- while Y < 1.0 loop
- Y := Y * 2.0;
- N := N - 1;
- end loop;
- return N;
- end function log2;
-
- -- purpose: Test the boundary conditions of a Real number
- procedure test_boundary (
- arg : in REAL; -- Input, converted to real
- constant fraction_width : in NATURAL; -- length of FP output fraction
- constant exponent_width : in NATURAL; -- length of FP exponent
- constant denormalize : in BOOLEAN := true; -- Use IEEE extended FP
- variable btype : out boundary_type;
- variable log2i : out INTEGER
- ) is
- constant expon_base : SIGNED (exponent_width-1 downto 0) :=
- gen_expon_base(exponent_width); -- exponent offset
- constant exp_min : SIGNED (12 downto 0) :=
- -(resize(expon_base, 13)) + 1; -- Minimum normal exponent
- constant exp_ext_min : SIGNED (12 downto 0) :=
- exp_min - fraction_width; -- Minimum for denormal exponent
- variable log2arg : INTEGER; -- log2 of argument
- begin -- function test_boundary
- -- Check to see if the exponent is big enough
- -- Note that the argument is always an absolute value at this point.
- log2arg := log2(arg);
- if arg = 0.0 then
- btype := zero;
- elsif exponent_width > 11 then -- Exponent for Real is 11 (64 bit)
- btype := normal;
- else
- if log2arg < to_integer(exp_min) then
- if denormalize then
- if log2arg < to_integer(exp_ext_min) then
- btype := zero;
- else
- btype := denormal;
- end if;
- else
- if log2arg < to_integer(exp_min)-1 then
- btype := zero;
- else
- btype := normal; -- Can still represent this number
- end if;
- end if;
- elsif exponent_width < 11 then
- if log2arg > to_integer(expon_base)+1 then
- btype := infinity;
- else
- btype := normal;
- end if;
- else
- btype := normal;
- end if;
- end if;
- log2i := log2arg;
- end procedure test_boundary;
-
- -- purpose: Rounds depending on the state of the "round_style"
- -- Logic taken from
- -- "What Every Computer Scientist Should Know About Floating Point Arithmetic"
- -- by David Goldberg (1991)
- function check_round (
- fract_in : STD_ULOGIC; -- input fraction
- sign : STD_ULOGIC; -- sign bit
- remainder : UNSIGNED; -- remainder to round from
- sticky : STD_ULOGIC := '0'; -- Sticky bit
- constant round_style : round_type) -- rounding type
- return BOOLEAN is
- variable result : BOOLEAN;
- variable or_reduced : STD_ULOGIC;
- begin -- function check_round
- result := false;
- if (remainder'length > 0) then -- if remainder in a null array
- or_reduced := or_reduce (remainder & sticky);
- rounding_case : case round_style is
- when round_nearest => -- Round Nearest, default mode
- if remainder(remainder'high) = '1' then -- round
- if (remainder'length > 1) then
- if ((or_reduce (remainder(remainder'high-1
- downto remainder'low)) = '1'
- or sticky = '1')
- or fract_in = '1') then
- -- Make the bottom bit zero if possible if we are at 1/2
- result := true;
- end if;
- else
- result := (fract_in = '1' or sticky = '1');
- end if;
- end if;
- when round_inf => -- round up if positive, else truncate.
- if or_reduced = '1' and sign = '0' then
- result := true;
- end if;
- when round_neginf => -- round down if negative, else truncate.
- if or_reduced = '1' and sign = '1' then
- result := true;
- end if;
- when round_zero => -- round toward 0 Truncate
- null;
- end case rounding_case;
- end if;
- return result;
- end function check_round;
-
- -- purpose: Rounds depending on the state of the "round_style"
- -- unsigned version
- procedure fp_round (
- fract_in : in UNSIGNED; -- input fraction
- expon_in : in SIGNED; -- input exponent
- fract_out : out UNSIGNED; -- output fraction
- expon_out : out SIGNED) is -- output exponent
- begin -- procedure fp_round
- if and_reduce (fract_in) = '1' then -- Fraction is all "1"
- expon_out := expon_in + 1;
- fract_out := to_unsigned(0, fract_out'high+1);
- else
- expon_out := expon_in;
- fract_out := fract_in + 1;
- end if;
- end procedure fp_round;
-
- -- This version of break_number doesn't call "classfp"
- procedure break_number ( -- internal version
- arg : in UNRESOLVED_float;
- fptyp : in valid_fpstate;
- denormalize : in BOOLEAN := true;
- fract : out UNSIGNED;
- expon : out SIGNED) is
- constant fraction_width : NATURAL := -arg'low; -- length of FP output fraction
- constant exponent_width : NATURAL := arg'high; -- length of FP output exponent
- constant expon_base : SIGNED (exponent_width-1 downto 0) :=
- gen_expon_base(exponent_width); -- exponent offset
- variable exp : SIGNED (expon'range);
- begin
- fract (fraction_width-1 downto 0) :=
- UNSIGNED (to_slv(arg(-1 downto -fraction_width)));
- breakcase : case fptyp is
- when pos_zero | neg_zero =>
- fract (fraction_width) := '0';
- exp := -expon_base;
- when pos_denormal | neg_denormal =>
- if denormalize then
- exp := -expon_base;
- fract (fraction_width) := '0';
- else
- exp := -expon_base - 1;
- fract (fraction_width) := '1';
- end if;
- when pos_normal | neg_normal | pos_inf | neg_inf =>
- fract (fraction_width) := '1';
- exp := SIGNED(arg(exponent_width-1 downto 0));
- exp (exponent_width-1) := not exp(exponent_width-1);
- when others =>
- assert NO_WARNING
- report "float_pkg:"
- & "BREAK_NUMBER: " &
- "Meta state detected in fp_break_number process"
- severity warning;
- -- complete the case, if a NAN goes in, a NAN comes out.
- exp := (others => '1');
- fract (fraction_width) := '1';
- end case breakcase;
- expon := exp;
- end procedure break_number;
-
- -- purpose: floating point to UNSIGNED
- -- Used by to_integer, to_unsigned, and to_signed functions
- procedure float_to_unsigned (
- arg : in UNRESOLVED_float; -- floating point input
- variable sign : out STD_ULOGIC; -- sign of output
- variable frac : out UNSIGNED; -- unsigned biased output
- constant denormalize : in BOOLEAN; -- turn on denormalization
- constant bias : in NATURAL; -- bias for fixed point
- constant round_style : in round_type) is -- rounding method
- constant fraction_width : INTEGER := -mine(arg'low, arg'low); -- length of FP output fraction
- constant exponent_width : INTEGER := arg'high; -- length of FP output exponent
- variable fract : UNSIGNED (frac'range); -- internal version of frac
- variable isign : STD_ULOGIC; -- internal version of sign
- variable exp : INTEGER; -- Exponent
- variable expon : SIGNED (exponent_width-1 downto 0); -- Vectorized exp
- -- Base to divide fraction by
- variable frac_shift : UNSIGNED (frac'high+3 downto 0); -- Fraction shifted
- variable shift : INTEGER;
- variable remainder : UNSIGNED (2 downto 0);
- variable round : STD_ULOGIC; -- round BIT
- begin
- isign := to_x01(arg(arg'high));
- -- exponent /= '0', normal floating point
- expon := to_01(SIGNED(arg (exponent_width-1 downto 0)), 'X');
- expon(exponent_width-1) := not expon(exponent_width-1);
- exp := to_integer (expon);
- -- Figure out the fraction
- fract := (others => '0'); -- fill with zero
- fract (fract'high) := '1'; -- Add the "1.0".
- shift := (fract'high-1) - exp;
- if fraction_width > fract'high then -- Can only use size-2 bits
- fract (fract'high-1 downto 0) := UNSIGNED (to_slv (arg(-1 downto
- -fract'high)));
- else -- can use all bits
- fract (fract'high-1 downto fract'high-fraction_width) :=
- UNSIGNED (to_slv (arg(-1 downto -fraction_width)));
- end if;
- frac_shift := fract & "000";
- if shift < 0 then -- Overflow
- fract := (others => '1');
- else
- frac_shift := shift_right (frac_shift, shift);
- fract := frac_shift (frac_shift'high downto 3);
- remainder := frac_shift (2 downto 0);
- -- round (round_zero will bypass this and truncate)
- case round_style is
- when round_nearest =>
- round := remainder(2) and
- (fract (0) or (or_reduce (remainder (1 downto 0))));
- when round_inf =>
- round := remainder(2) and not isign;
- when round_neginf =>
- round := remainder(2) and isign;
- when others =>
- round := '0';
- end case;
- if round = '1' then
- fract := fract + 1;
- end if;
- end if;
- frac := fract;
- sign := isign;
- end procedure float_to_unsigned;
-
- -- purpose: returns a part of a vector, this function is here because
- -- or (fractr (to_integer(shiftx) downto 0));
- -- can't be synthesized in some synthesis tools.
- function smallfract (
- arg : UNSIGNED;
- shift : NATURAL)
- return STD_ULOGIC is
- variable orx : STD_ULOGIC;
- begin
- orx := arg(shift);
- for i in arg'range loop
- if i < shift then
- orx := arg(i) or orx;
- end if;
- end loop;
- return orx;
- end function smallfract;
- ---------------------------------------------------------------------------
- -- Visible functions
- ---------------------------------------------------------------------------
-
- -- purpose: converts the negative index to a positive one
- -- negative indices are illegal in 1164 and 1076.3
- function to_sulv (
- arg : UNRESOLVED_float) -- fp vector
- return STD_ULOGIC_VECTOR is
- variable result : STD_ULOGIC_VECTOR (arg'length-1 downto 0);
- begin -- function to_std_ulogic_vector
- if arg'length < 1 then
- return NSLV;
- end if;
- result := STD_ULOGIC_VECTOR (arg);
- return result;
- end function to_sulv;
-
- -- Converts an fp into an SLV
- function to_slv (arg : UNRESOLVED_float) return STD_LOGIC_VECTOR is
- begin
- return std_logic_vector (to_sulv (arg));
- end function to_slv;
-
- -- purpose: normalizes a floating point number
- -- This version assumes an "unsigned" input with
- function normalize (
- fract : UNSIGNED; -- fraction, unnormalized
- expon : SIGNED; -- exponent, normalized by -1
- sign : STD_ULOGIC; -- sign BIT
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- constant exponent_width : NATURAL := float_exponent_width; -- size of output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- size of output fraction
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float is
- variable sfract : UNSIGNED (fract'high downto 0); -- shifted fraction
- variable rfract : UNSIGNED (fraction_width-1 downto 0); -- fraction
- variable exp : SIGNED (exponent_width+1 downto 0); -- exponent
- variable rexp : SIGNED (exponent_width+1 downto 0); -- result exponent
- variable rexpon : UNSIGNED (exponent_width-1 downto 0); -- exponent
- variable result : UNRESOLVED_float (exponent_width downto -fraction_width); -- result
- variable shiftr : INTEGER; -- shift amount
- variable stickyx : STD_ULOGIC; -- version of sticky
- constant expon_base : SIGNED (exponent_width-1 downto 0) :=
- gen_expon_base(exponent_width); -- exponent offset
- variable round, zerores, infres : BOOLEAN;
- begin -- function normalize
- zerores := false;
- infres := false;
- round := false;
- shiftr := find_leftmost (to_01(fract), '1') -- Find the first "1"
- - fraction_width - nguard; -- subtract the length we want
- exp := resize (expon, exp'length) + shiftr;
- if (or_reduce (fract) = '0') then -- Zero
- zerores := true;
- elsif ((exp <= -resize(expon_base, exp'length)-1) and denormalize)
- or ((exp < -resize(expon_base, exp'length)-1) and not denormalize) then
- if (exp >= -resize(expon_base, exp'length)-fraction_width-1)
- and denormalize then
- exp := -resize(expon_base, exp'length)-1;
- shiftr := -to_integer (expon + expon_base); -- new shift
- else -- return zero
- zerores := true;
- end if;
- elsif (exp > expon_base-1) then -- infinity
- infres := true;
- end if;
- if zerores then
- result := zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif infres then
- result := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- else
- sfract := fract srl shiftr; -- shift
- if shiftr > 0 then
--- stickyx := sticky or (or_reduce(fract (shiftr-1 downto 0)));
- stickyx := sticky or smallfract (fract, shiftr-1);
- else
- stickyx := sticky;
- end if;
- if nguard > 0 then
- round := check_round (
- fract_in => sfract (nguard),
- sign => sign,
- remainder => sfract(nguard-1 downto 0),
- sticky => stickyx,
- round_style => round_style);
- end if;
- if round then
- fp_round(fract_in => sfract (fraction_width-1+nguard downto nguard),
- expon_in => exp(rexp'range),
- fract_out => rfract,
- expon_out => rexp);
- else
- rfract := sfract (fraction_width-1+nguard downto nguard);
- rexp := exp(rexp'range);
- end if;
- -- result
- rexpon := UNSIGNED (rexp(exponent_width-1 downto 0));
- rexpon (exponent_width-1) := not rexpon(exponent_width-1);
- result (rexpon'range) := UNRESOLVED_float(rexpon);
- result (-1 downto -fraction_width) := UNRESOLVED_float(rfract);
- end if;
- result (exponent_width) := sign; -- sign BIT
- return result;
- end function normalize;
-
- -- purpose: normalizes a floating point number
- -- This version assumes a "ufixed" input
- function normalize (
- fract : ufixed; -- unsigned fixed point
- expon : SIGNED; -- exponent, normalized by -1
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- constant exponent_width : NATURAL := float_exponent_width; -- size of output exponent
- constant fraction_width : NATURAL := float_fraction_width; -- size of output fraction
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float is
- variable result : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable arguns : UNSIGNED (fract'high + fraction_width + nguard
- downto 0) := (others => '0');
- begin -- function normalize
- arguns (arguns'high downto maximum (arguns'high-fract'length+1, 0)) :=
- UNSIGNED (to_slv (fract));
- result := normalize (fract => arguns,
- expon => expon,
- sign => sign,
- sticky => sticky,
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => nguard);
- return result;
- end function normalize;
-
- -- purpose: normalizes a floating point number
- -- This version assumes a "ufixed" input with a "size_res" input
- function normalize (
- fract : ufixed; -- unsigned fixed point
- expon : SIGNED; -- exponent, normalized by -1
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- size_res : UNRESOLVED_float; -- used for sizing only
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float is
- constant fraction_width : NATURAL := -size_res'low;
- constant exponent_width : NATURAL := size_res'high;
- variable result : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable arguns : UNSIGNED (fract'high + fraction_width + nguard
- downto 0) := (others => '0');
- begin -- function normalize
- arguns (arguns'high downto maximum (arguns'high-fract'length+1, 0)) :=
- UNSIGNED (to_slv (fract));
- result := normalize (fract => arguns,
- expon => expon,
- sign => sign,
- sticky => sticky,
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => nguard);
- return result;
- end function normalize;
-
- -- Regular "normalize" function with a "size_res" input.
- function normalize (
- fract : UNSIGNED; -- unsigned
- expon : SIGNED; -- exponent - 1, normalized
- sign : STD_ULOGIC; -- sign bit
- sticky : STD_ULOGIC := '0'; -- Sticky bit (rounding)
- size_res : UNRESOLVED_float; -- used for sizing only
- constant round_style : round_type := float_round_style; -- rounding option
- constant denormalize : BOOLEAN := float_denormalize; -- Use IEEE extended FP
- constant nguard : NATURAL := float_guard_bits) -- guard bits
- return UNRESOLVED_float is
- begin
- return normalize (fract => fract,
- expon => expon,
- sign => sign,
- sticky => sticky,
- fraction_width => -size_res'low,
- exponent_width => size_res'high,
- round_style => round_style,
- denormalize => denormalize,
- nguard => nguard);
- end function normalize;
-
- -- Returns the class which X falls into
- function Classfp (
- x : UNRESOLVED_float; -- floating point input
- check_error : BOOLEAN := float_check_error) -- check for errors
- return valid_fpstate is
- constant fraction_width : INTEGER := -mine(x'low, x'low); -- length of FP output fraction
- constant exponent_width : INTEGER := x'high; -- length of FP output exponent
- variable arg : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- classfp
- if (arg'length < 1 or fraction_width < 3 or exponent_width < 3
- or x'left < x'right) then
- report "float_pkg:"
- & "CLASSFP: " &
- "Floating point number detected with a bad range"
- severity error;
- return isx;
- end if;
- -- Check for "X".
- arg := to_01 (x, 'X');
- if (arg(0) = 'X') then
- return isx; -- If there is an X in the number
- -- Special cases, check for illegal number
- elsif check_error and
- (and_reduce (STD_ULOGIC_VECTOR (arg (exponent_width-1 downto 0)))
- = '1') then -- Exponent is all "1".
- if or_reduce (to_slv (arg (-1 downto -fraction_width)))
- /= '0' then -- Fraction must be all "0" or this is not a number.
- if (arg(-1) = '1') then -- From "W. Khan - IEEE standard
- return nan; -- 754 binary FP Signaling nan (Not a number)
- else
- return quiet_nan;
- end if;
- -- Check for infinity
- elsif arg(exponent_width) = '0' then
- return pos_inf; -- Positive infinity
- else
- return neg_inf; -- Negative infinity
- end if;
- -- check for "0"
- elsif or_reduce (STD_LOGIC_VECTOR (arg (exponent_width-1 downto 0)))
- = '0' then -- Exponent is all "0"
- if or_reduce (to_slv (arg (-1 downto -fraction_width)))
- = '0' then -- Fraction is all "0"
- if arg(exponent_width) = '0' then
- return pos_zero; -- Zero
- else
- return neg_zero;
- end if;
- else
- if arg(exponent_width) = '0' then
- return pos_denormal; -- Denormal number (ieee extended fp)
- else
- return neg_denormal;
- end if;
- end if;
- else
- if arg(exponent_width) = '0' then
- return pos_normal; -- Normal FP number
- else
- return neg_normal;
- end if;
- end if;
- end function Classfp;
-
- procedure break_number (
- arg : in UNRESOLVED_float;
- denormalize : in BOOLEAN := float_denormalize;
- check_error : in BOOLEAN := float_check_error;
- fract : out UNSIGNED;
- expon : out SIGNED;
- sign : out STD_ULOGIC) is
- constant fraction_width : NATURAL := -mine(arg'low, arg'low); -- length of FP output fraction
- variable fptyp : valid_fpstate;
- begin
- fptyp := Classfp (arg, check_error);
- sign := to_x01(arg(arg'high));
- break_number (
- arg => arg,
- fptyp => fptyp,
- denormalize => denormalize,
- fract => fract,
- expon => expon);
- end procedure break_number;
-
- procedure break_number (
- arg : in UNRESOLVED_float;
- denormalize : in BOOLEAN := float_denormalize;
- check_error : in BOOLEAN := float_check_error;
- fract : out ufixed; -- 1 downto -fraction_width
- expon : out SIGNED; -- exponent_width-1 downto 0
- sign : out STD_ULOGIC) is
- constant fraction_width : NATURAL := -mine(arg'low, arg'low); -- length of FP output fraction
- variable fptyp : valid_fpstate;
- variable ufract : UNSIGNED (fraction_width downto 0); -- unsigned fraction
- begin
- fptyp := Classfp (arg, check_error);
- sign := to_x01(arg(arg'high));
- break_number (
- arg => arg,
- fptyp => fptyp,
- denormalize => denormalize,
- fract => ufract,
- expon => expon);
- fract (0 downto -fraction_width) := ufixed (ufract);
- end procedure break_number;
-
- -- Arithmetic functions
- function "abs" (
- arg : UNRESOLVED_float) -- floating point input
- return UNRESOLVED_float is
- variable result : UNRESOLVED_float (arg'range); -- result
- begin
- if (arg'length > 0) then
- result := to_01 (arg, 'X');
- result (arg'high) := '0'; -- set the sign bit to positive
- return result;
- else
- return NAFP;
- end if;
- end function "abs";
-
- -- IEEE 754 "negative" function
- function "-" (
- arg : UNRESOLVED_float) -- floating point input
- return UNRESOLVED_float is
- variable result : UNRESOLVED_float (arg'range); -- result
- begin
- if (arg'length > 0) then
- result := to_01 (arg, 'X');
- result (arg'high) := not result (arg'high); -- invert sign bit
- return result;
- else
- return NAFP;
- end if;
- end function "-";
-
- -- Addition, adds two floating point numbers
- function add (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- constant addguard : NATURAL := guard; -- add one guard bit
- variable lfptype, rfptype : valid_fpstate;
- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable fractl, fractr : UNSIGNED (fraction_width+1+addguard downto 0); -- fractions
- variable fractc, fracts : UNSIGNED (fractl'range); -- constant and shifted variables
- variable urfract, ulfract : UNSIGNED (fraction_width downto 0);
- variable ufract : UNSIGNED (fraction_width+1+addguard downto 0);
- variable exponl, exponr : SIGNED (exponent_width-1 downto 0); -- exponents
- variable rexpon : SIGNED (exponent_width downto 0); -- result exponent
- variable shiftx : SIGNED (exponent_width downto 0); -- shift fractions
- variable sign : STD_ULOGIC; -- sign of the output
- variable leftright : BOOLEAN; -- left or right used
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable sticky : STD_ULOGIC; -- Holds precision for rounding
- begin -- addition
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- lfptype := isx;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- end if;
- if (lfptype = isx or rfptype = isx) then
- fpresult := (others => 'X');
- elsif (lfptype = nan or lfptype = quiet_nan or
- rfptype = nan or rfptype = quiet_nan)
- -- Return quiet NAN, IEEE754-1985-7.1,1
- or (lfptype = pos_inf and rfptype = neg_inf)
- or (lfptype = neg_inf and rfptype = pos_inf) then
- -- Return quiet NAN, IEEE754-1985-7.1,2
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (lfptype = pos_inf or rfptype = pos_inf) then -- x + inf = inf
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (lfptype = neg_inf or rfptype = neg_inf) then -- x - inf = -inf
- fpresult := neg_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (lfptype = neg_zero and rfptype = neg_zero) then -- -0 + -0 = -0
- fpresult := neg_zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- else
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- lfptype := classfp (lresize, false); -- errors already checked
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rfptype := classfp (rresize, false); -- errors already checked
- break_number (
- arg => lresize,
- fptyp => lfptype,
- denormalize => denormalize,
- fract => ulfract,
- expon => exponl);
- fractl := (others => '0');
- fractl (fraction_width+addguard downto addguard) := ulfract;
- break_number (
- arg => rresize,
- fptyp => rfptype,
- denormalize => denormalize,
- fract => urfract,
- expon => exponr);
- fractr := (others => '0');
- fractr (fraction_width+addguard downto addguard) := urfract;
- shiftx := (exponl(exponent_width-1) & exponl) - exponr;
- if shiftx < -fractl'high then
- rexpon := exponr(exponent_width-1) & exponr;
- fractc := fractr;
- fracts := (others => '0'); -- add zero
- leftright := false;
- sticky := or_reduce (fractl);
- elsif shiftx < 0 then
- shiftx := - shiftx;
- fracts := shift_right (fractl, to_integer(shiftx));
- fractc := fractr;
- rexpon := exponr(exponent_width-1) & exponr;
- leftright := false;
--- sticky := or_reduce (fractl (to_integer(shiftx) downto 0));
- sticky := smallfract (fractl, to_integer(shiftx));
- elsif shiftx = 0 then
- rexpon := exponl(exponent_width-1) & exponl;
- sticky := '0';
- if fractr > fractl then
- fractc := fractr;
- fracts := fractl;
- leftright := false;
- else
- fractc := fractl;
- fracts := fractr;
- leftright := true;
- end if;
- elsif shiftx > fractr'high then
- rexpon := exponl(exponent_width-1) & exponl;
- fracts := (others => '0'); -- add zero
- fractc := fractl;
- leftright := true;
- sticky := or_reduce (fractr);
- elsif shiftx > 0 then
- fracts := shift_right (fractr, to_integer(shiftx));
- fractc := fractl;
- rexpon := exponl(exponent_width-1) & exponl;
- leftright := true;
--- sticky := or_reduce (fractr (to_integer(shiftx) downto 0));
- sticky := smallfract (fractr, to_integer(shiftx));
- end if;
- -- add
- fracts (0) := fracts (0) or sticky; -- Or the sticky bit into the LSB
- if l(l'high) = r(r'high) then
- ufract := fractc + fracts;
- sign := l(l'high);
- else -- signs are different
- ufract := fractc - fracts; -- always positive result
- if leftright then -- Figure out which sign to use
- sign := l(l'high);
- else
- sign := r(r'high);
- end if;
- end if;
- if or_reduce (ufract) = '0' then
- sign := '0'; -- IEEE 854, 6.3, paragraph 2.
- end if;
- -- normalize
- fpresult := normalize (fract => ufract,
- expon => rexpon,
- sign => sign,
- sticky => sticky,
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => addguard);
- end if;
- return fpresult;
- end function add;
-
- -- Subtraction, Calls "add".
- function subtract (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- variable negr : UNRESOLVED_float (r'range); -- negative version of r
- begin
- negr := -r;
- return add (l => l,
- r => negr,
- round_style => round_style,
- guard => guard,
- check_error => check_error,
- denormalize => denormalize);
- end function subtract;
-
- -- Floating point multiply
- function multiply (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- constant multguard : NATURAL := guard; -- guard bits
- variable lfptype, rfptype : valid_fpstate;
- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable fractl, fractr : UNSIGNED (fraction_width downto 0); -- fractions
- variable rfract : UNSIGNED ((2*(fraction_width))+1 downto 0); -- result fraction
- variable sfract : UNSIGNED (fraction_width+1+multguard downto 0); -- result fraction
- variable shifty : INTEGER; -- denormal shift
- variable exponl, exponr : SIGNED (exponent_width-1 downto 0); -- exponents
- variable rexpon : SIGNED (exponent_width+1 downto 0); -- result exponent
- variable fp_sign : STD_ULOGIC; -- sign of result
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable sticky : STD_ULOGIC; -- Holds precision for rounding
- begin -- multiply
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- lfptype := isx;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- end if;
- if (lfptype = isx or rfptype = isx) then
- fpresult := (others => 'X');
- elsif ((lfptype = nan or lfptype = quiet_nan or
- rfptype = nan or rfptype = quiet_nan)) then
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (((lfptype = pos_inf or lfptype = neg_inf) and
- (rfptype = pos_zero or rfptype = neg_zero)) or
- ((rfptype = pos_inf or rfptype = neg_inf) and
- (lfptype = pos_zero or lfptype = neg_zero))) then -- 0 * inf
- -- Return quiet NAN, IEEE754-1985-7.1,3
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (lfptype = pos_inf or rfptype = pos_inf
- or lfptype = neg_inf or rfptype = neg_inf) then -- x * inf = inf
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- -- figure out the sign
- fp_sign := l(l'high) xor r(r'high); -- figure out the sign
- fpresult (exponent_width) := fp_sign;
- else
- fp_sign := l(l'high) xor r(r'high); -- figure out the sign
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- lfptype := classfp (lresize, false); -- errors already checked
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rfptype := classfp (rresize, false); -- errors already checked
- break_number (
- arg => lresize,
- fptyp => lfptype,
- denormalize => denormalize,
- fract => fractl,
- expon => exponl);
- break_number (
- arg => rresize,
- fptyp => rfptype,
- denormalize => denormalize,
- fract => fractr,
- expon => exponr);
- if (rfptype = pos_denormal or rfptype = neg_denormal) then
- shifty := fraction_width - find_leftmost(fractr, '1');
- fractr := shift_left (fractr, shifty);
- elsif (lfptype = pos_denormal or lfptype = neg_denormal) then
- shifty := fraction_width - find_leftmost(fractl, '1');
- fractl := shift_left (fractl, shifty);
- else
- shifty := 0;
- -- Note that a denormal number * a denormal number is always zero.
- end if;
- -- multiply
- -- add the exponents
- rexpon := resize (exponl, rexpon'length) + exponr - shifty + 1;
- rfract := fractl * fractr; -- Multiply the fraction
- sfract := rfract (rfract'high downto
- rfract'high - (fraction_width+1+multguard));
- sticky := or_reduce (rfract (rfract'high-(fraction_width+1+multguard)
- downto 0));
- -- normalize
- fpresult := normalize (fract => sfract,
- expon => rexpon,
- sign => fp_sign,
- sticky => sticky,
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => multguard);
- end if;
- return fpresult;
- end function multiply;
-
- function short_divide (
- lx, rx : UNSIGNED)
- return UNSIGNED is
- -- This is a special divider for the floating point routines.
- -- For a true unsigned divider, "stages" needs to = lx'high
- constant stages : INTEGER := lx'high - rx'high; -- number of stages
- variable partial : UNSIGNED (lx'range);
- variable q : UNSIGNED (stages downto 0);
- variable partial_argl : SIGNED (rx'high + 2 downto 0);
- variable partial_arg : SIGNED (rx'high + 2 downto 0);
- begin
- partial := lx;
- for i in stages downto 0 loop
- partial_argl := resize ("0" & SIGNED (partial(lx'high downto i)),
- partial_argl'length);
- partial_arg := partial_argl - SIGNED ("0" & rx);
- if (partial_arg (partial_arg'high) = '1') then -- negative
- q(i) := '0';
- else
- q(i) := '1';
- partial (lx'high+i-stages downto lx'high+i-stages-rx'high) :=
- UNSIGNED (partial_arg(rx'range));
- end if;
- end loop;
- -- to make the output look like that of the unsigned IEEE divide.
- return resize (q, lx'length);
- end function short_divide;
-
- -- 1/X function. Needed for algorithm development.
- function reciprocal (
- arg : UNRESOLVED_float;
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- constant fraction_width : NATURAL := -mine(arg'low, arg'low); -- length of FP output fraction
- constant exponent_width : NATURAL := arg'high; -- length of FP output exponent
- constant divguard : NATURAL := guard; -- guard bits
- function onedivy (
- arg : UNSIGNED)
- return UNSIGNED is
- variable q : UNSIGNED((2*arg'high)+1 downto 0);
- variable one : UNSIGNED (q'range);
- begin
- one := (others => '0');
- one(one'high) := '1';
- q := short_divide (one, arg); -- Unsigned divide
- return resize (q, arg'length+1);
- end function onedivy;
- variable fptype : valid_fpstate;
- variable expon : SIGNED (exponent_width-1 downto 0); -- exponents
- variable denorm_offset : NATURAL range 0 to 2;
- variable fract : UNSIGNED (fraction_width downto 0);
- variable fractg : UNSIGNED (fraction_width+divguard downto 0);
- variable sfract : UNSIGNED (fraction_width+1+divguard downto 0); -- result fraction
- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- reciprocal
- fptype := classfp(arg, check_error);
- classcase : case fptype is
- when isx =>
- fpresult := (others => 'X');
- when nan | quiet_nan =>
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when pos_inf | neg_inf => -- 1/inf, return 0
- fpresult := zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when neg_zero | pos_zero => -- 1/0
- report "float_pkg:"
- & "RECIPROCAL: Floating Point divide by zero"
- severity error;
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when others =>
- if (fptype = pos_denormal or fptype = neg_denormal)
- and ((arg (-1) or arg(-2)) /= '1') then
- -- 1/denormal = infinity, with the exception of 2**-expon_base
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fpresult (exponent_width) := to_x01 (arg (exponent_width));
- else
- break_number (
- arg => arg,
- fptyp => fptype,
- denormalize => denormalize,
- fract => fract,
- expon => expon);
- fractg := (others => '0');
- if (fptype = pos_denormal or fptype = neg_denormal) then
- -- The reciprocal of a denormal number is typically zero,
- -- except for two special cases which are trapped here.
- if (to_x01(arg (-1)) = '1') then
- fractg (fractg'high downto divguard+1) :=
- fract (fract'high-1 downto 0); -- Shift to not denormal
- denorm_offset := 1; -- add 1 to exponent compensate
- else -- arg(-2) = '1'
- fractg (fractg'high downto divguard+2) :=
- fract (fract'high-2 downto 0); -- Shift to not denormal
- denorm_offset := 2; -- add 2 to exponent compensate
- end if;
- else
- fractg (fractg'high downto divguard) := fract;
- denorm_offset := 0;
- end if;
- expon := - expon - 3 + denorm_offset;
- sfract := onedivy (fractg);
- -- normalize
- fpresult := normalize (fract => sfract,
- expon => expon,
- sign => arg(exponent_width),
- sticky => '1',
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => divguard);
- end if;
- end case classcase;
- return fpresult;
- end function reciprocal;
-
- -- floating point division
- function divide (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- constant divguard : NATURAL := guard; -- division guard bits
- variable lfptype, rfptype : valid_fpstate;
- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable ulfract, urfract : UNSIGNED (fraction_width downto 0);
- variable fractl : UNSIGNED ((2*(fraction_width+divguard)+1) downto 0); -- left
- variable fractr : UNSIGNED (fraction_width+divguard downto 0); -- right
- variable rfract : UNSIGNED (fractl'range); -- result fraction
- variable sfract : UNSIGNED (fraction_width+1+divguard downto 0); -- result fraction
- variable exponl, exponr : SIGNED (exponent_width-1 downto 0); -- exponents
- variable rexpon : SIGNED (exponent_width+1 downto 0); -- result exponent
- variable fp_sign, sticky : STD_ULOGIC; -- sign of result
- variable shifty, shiftx : INTEGER; -- denormal number shift
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- divide
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- lfptype := isx;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- end if;
- classcase : case rfptype is
- when isx =>
- fpresult := (others => 'X');
- when nan | quiet_nan =>
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when pos_inf | neg_inf =>
- if lfptype = pos_inf or lfptype = neg_inf -- inf / inf
- or lfptype = quiet_nan or lfptype = nan then
- -- Return quiet NAN, IEEE754-1985-7.1,4
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- else -- x / inf = 0
- fpresult := zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult (fpresult'high) := fp_sign; -- sign
- end if;
- when pos_zero | neg_zero =>
- if lfptype = pos_zero or lfptype = neg_zero -- 0 / 0
- or lfptype = quiet_nan or lfptype = nan then
- -- Return quiet NAN, IEEE754-1985-7.1,4
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- else
- report "float_pkg:"
- & "DIVIDE: Floating Point divide by zero"
- severity error;
- -- Infinity, define in 754-1985-7.2
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult (fpresult'high) := fp_sign; -- sign
- end if;
- when others =>
- classcase2 : case lfptype is
- when isx =>
- fpresult := (others => 'X');
- when nan | quiet_nan =>
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when pos_inf | neg_inf => -- inf / x = inf
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult(exponent_width) := fp_sign;
- when pos_zero | neg_zero => -- 0 / X = 0
- fpresult := zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult(exponent_width) := fp_sign;
- when others =>
- fp_sign := l(l'high) xor r(r'high); -- sign
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- lfptype := classfp (lresize, false); -- errors already checked
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rfptype := classfp (rresize, false); -- errors already checked
- break_number (
- arg => lresize,
- fptyp => lfptype,
- denormalize => denormalize,
- fract => ulfract,
- expon => exponl);
- -- right side
- break_number (
- arg => rresize,
- fptyp => rfptype,
- denormalize => denormalize,
- fract => urfract,
- expon => exponr);
- -- Compute the exponent
- rexpon := resize (exponl, rexpon'length) - exponr - 2;
- if (rfptype = pos_denormal or rfptype = neg_denormal) then
- -- Do the shifting here not after. That way we have a smaller
- -- shifter, and need a smaller divider, because the top
- -- bit in the divisor will always be a "1".
- shifty := fraction_width - find_leftmost(urfract, '1');
- urfract := shift_left (urfract, shifty);
- rexpon := rexpon + shifty;
- end if;
- fractr := (others => '0');
- fractr (fraction_width+divguard downto divguard) := urfract;
- if (lfptype = pos_denormal or lfptype = neg_denormal) then
- shiftx := fraction_width - find_leftmost(ulfract, '1');
- ulfract := shift_left (ulfract, shiftx);
- rexpon := rexpon - shiftx;
- end if;
- fractl := (others => '0');
- fractl (fractl'high downto fractl'high-fraction_width) := ulfract;
- -- divide
- rfract := short_divide (fractl, fractr); -- unsigned divide
- sfract := rfract (sfract'range); -- lower bits
- sticky := '1';
- -- normalize
- fpresult := normalize (fract => sfract,
- expon => rexpon,
- sign => fp_sign,
- sticky => sticky,
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => divguard);
- end case classcase2;
- end case classcase;
- return fpresult;
- end function divide;
-
- -- division by a power of 2
- function dividebyp2 (
- l, r : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- variable lfptype, rfptype : valid_fpstate;
- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable ulfract, urfract : UNSIGNED (fraction_width downto 0);
- variable exponl, exponr : SIGNED(exponent_width-1 downto 0); -- exponents
- variable rexpon : SIGNED(exponent_width downto 0); -- result exponent
- variable fp_sign : STD_ULOGIC; -- sign of result
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- divisionbyp2
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- lfptype := isx;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- end if;
- classcase : case rfptype is
- when isx =>
- fpresult := (others => 'X');
- when nan | quiet_nan =>
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when pos_inf | neg_inf =>
- if lfptype = pos_inf or lfptype = neg_inf then -- inf / inf
- -- Return quiet NAN, IEEE754-1985-7.1,4
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- else -- x / inf = 0
- fpresult := zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult (fpresult'high) := fp_sign; -- sign
- end if;
- when pos_zero | neg_zero =>
- if lfptype = pos_zero or lfptype = neg_zero then -- 0 / 0
- -- Return quiet NAN, IEEE754-1985-7.1,4
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- else
- report "float_pkg:"
- & "DIVIDEBYP2: Floating Point divide by zero"
- severity error;
- -- Infinity, define in 754-1985-7.2
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult (fpresult'high) := fp_sign; -- sign
- end if;
- when others =>
- classcase2 : case lfptype is
- when isx =>
- fpresult := (others => 'X');
- when nan | quiet_nan =>
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- when pos_inf | neg_inf => -- inf / x = inf
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult (exponent_width) := fp_sign; -- sign
- when pos_zero | neg_zero => -- 0 / X = 0
- fpresult := zerofp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- fp_sign := l(l'high) xor r(r'high); -- sign
- fpresult (exponent_width) := fp_sign; -- sign
- when others =>
- fp_sign := l(l'high) xor r(r'high); -- sign
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- lfptype := classfp (lresize, false); -- errors already checked
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rfptype := classfp (rresize, false); -- errors already checked
- break_number (
- arg => lresize,
- fptyp => lfptype,
- denormalize => denormalize,
- fract => ulfract,
- expon => exponl);
- -- right side
- break_number (
- arg => rresize,
- fptyp => rfptype,
- denormalize => denormalize,
- fract => urfract,
- expon => exponr);
- assert (or_reduce (urfract (fraction_width-1 downto 0)) = '0')
- report "float_pkg:"
- & "DIVIDEBYP2: "
- & "Dividebyp2 called with a non power of two divisor"
- severity error;
- rexpon := (exponl(exponl'high)&exponl)
- - (exponr(exponr'high)&exponr) - 1;
- -- normalize
- fpresult := normalize (fract => ulfract,
- expon => rexpon,
- sign => fp_sign,
- sticky => '1',
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => 0);
- end case classcase2;
- end case classcase;
- return fpresult;
- end function dividebyp2;
-
- -- Multiply accumulate result = l*r + c
- function mac (
- l, r, c : UNRESOLVED_float; -- floating point input
- constant round_style : round_type := float_round_style; -- rounding option
- constant guard : NATURAL := float_guard_bits; -- number of guard bits
- constant check_error : BOOLEAN := float_check_error; -- check for errors
- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
- return UNRESOLVED_float is
- constant fraction_width : NATURAL :=
- -mine (mine(l'low, r'low), c'low); -- length of FP output fraction
- constant exponent_width : NATURAL :=
- maximum (maximum(l'high, r'high), c'high); -- length of FP output exponent
- variable lfptype, rfptype, cfptype : valid_fpstate;
- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable fractl, fractr : UNSIGNED (fraction_width downto 0); -- fractions
- variable fractx : UNSIGNED (fraction_width+guard downto 0);
- variable fractc, fracts : UNSIGNED (fraction_width+1+guard downto 0);
- variable rfract : UNSIGNED ((2*(fraction_width))+1 downto 0); -- result fraction
- variable sfract, ufract : UNSIGNED (fraction_width+1+guard downto 0); -- result fraction
- variable exponl, exponr, exponc : SIGNED (exponent_width-1 downto 0); -- exponents
- variable rexpon, rexpon2 : SIGNED (exponent_width+1 downto 0); -- result exponent
- variable shifty : INTEGER; -- denormal shift
- variable shiftx : SIGNED (rexpon'range); -- shift fractions
- variable fp_sign : STD_ULOGIC; -- sign of result
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- variable cresize : UNRESOLVED_float (exponent_width downto -fraction_width - guard);
- variable leftright : BOOLEAN; -- left or right used
- variable sticky : STD_ULOGIC; -- Holds precision for rounding
- begin -- multiply
- if (fraction_width = 0 or l'length < 7 or r'length < 7 or c'length < 7) then
- lfptype := isx;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- cfptype := classfp (c, check_error);
- end if;
- if (lfptype = isx or rfptype = isx or cfptype = isx) then
- fpresult := (others => 'X');
- elsif (lfptype = nan or lfptype = quiet_nan or
- rfptype = nan or rfptype = quiet_nan or
- cfptype = nan or cfptype = quiet_nan) then
- -- Return quiet NAN, IEEE754-1985-7.1,1
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (((lfptype = pos_inf or lfptype = neg_inf) and
- (rfptype = pos_zero or rfptype = neg_zero)) or
- ((rfptype = pos_inf or rfptype = neg_inf) and
- (lfptype = pos_zero or lfptype = neg_zero))) then -- 0 * inf
- -- Return quiet NAN, IEEE754-1985-7.1,3
- fpresult := qnanfp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- elsif (lfptype = pos_inf or rfptype = pos_inf
- or lfptype = neg_inf or rfptype = neg_inf -- x * inf = inf
- or cfptype = neg_inf or cfptype = pos_inf) then -- x + inf = inf
- fpresult := pos_inffp (fraction_width => fraction_width,
- exponent_width => exponent_width);
- -- figure out the sign
- fpresult (exponent_width) := l(l'high) xor r(r'high);
- else
- fp_sign := l(l'high) xor r(r'high); -- figure out the sign
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- lfptype := classfp (lresize, false); -- errors already checked
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rfptype := classfp (rresize, false); -- errors already checked
- cresize := resize (arg => to_x01(c),
- exponent_width => exponent_width,
- fraction_width => -cresize'low,
- denormalize_in => denormalize,
- denormalize => denormalize);
- cfptype := classfp (cresize, false); -- errors already checked
- break_number (
- arg => lresize,
- fptyp => lfptype,
- denormalize => denormalize,
- fract => fractl,
- expon => exponl);
- break_number (
- arg => rresize,
- fptyp => rfptype,
- denormalize => denormalize,
- fract => fractr,
- expon => exponr);
- break_number (
- arg => cresize,
- fptyp => cfptype,
- denormalize => denormalize,
- fract => fractx,
- expon => exponc);
- if (rfptype = pos_denormal or rfptype = neg_denormal) then
- shifty := fraction_width - find_leftmost(fractr, '1');
- fractr := shift_left (fractr, shifty);
- elsif (lfptype = pos_denormal or lfptype = neg_denormal) then
- shifty := fraction_width - find_leftmost(fractl, '1');
- fractl := shift_left (fractl, shifty);
- else
- shifty := 0;
- -- Note that a denormal number * a denormal number is always zero.
- end if;
- -- multiply
- rfract := fractl * fractr; -- Multiply the fraction
- -- add the exponents
- rexpon := resize (exponl, rexpon'length) + exponr - shifty + 1;
- shiftx := rexpon - exponc;
- if shiftx < -fractl'high then
- rexpon2 := resize (exponc, rexpon2'length);
- fractc := "0" & fractx;
- fracts := (others => '0');
- sticky := or_reduce (rfract);
- elsif shiftx < 0 then
- shiftx := - shiftx;
- fracts := shift_right (rfract (rfract'high downto rfract'high
- - fracts'length+1),
- to_integer(shiftx));
- fractc := "0" & fractx;
- rexpon2 := resize (exponc, rexpon2'length);
- leftright := false;
- sticky := or_reduce (rfract (to_integer(shiftx)+rfract'high
- - fracts'length downto 0));
- elsif shiftx = 0 then
- rexpon2 := resize (exponc, rexpon2'length);
- sticky := or_reduce (rfract (rfract'high - fractc'length downto 0));
- if rfract (rfract'high downto rfract'high - fractc'length+1) > fractx
- then
- fractc := "0" & fractx;
- fracts := rfract (rfract'high downto rfract'high
- - fracts'length+1);
- leftright := false;
- else
- fractc := rfract (rfract'high downto rfract'high
- - fractc'length+1);
- fracts := "0" & fractx;
- leftright := true;
- end if;
- elsif shiftx > fractx'high then
- rexpon2 := rexpon;
- fracts := (others => '0');
- fractc := rfract (rfract'high downto rfract'high - fractc'length+1);
- leftright := true;
- sticky := or_reduce (fractx & rfract (rfract'high - fractc'length
- downto 0));
- else -- fractx'high > shiftx > 0
- rexpon2 := rexpon;
- fracts := "0" & shift_right (fractx, to_integer (shiftx));
- fractc := rfract (rfract'high downto rfract'high - fractc'length+1);
- leftright := true;
- sticky := or_reduce (fractx (to_integer (shiftx) downto 0)
- & rfract (rfract'high - fractc'length downto 0));
- end if;
- fracts (0) := fracts (0) or sticky; -- Or the sticky bit into the LSB
- if fp_sign = to_X01(c(c'high)) then
- ufract := fractc + fracts;
- fp_sign := fp_sign;
- else -- signs are different
- ufract := fractc - fracts; -- always positive result
- if leftright then -- Figure out which sign to use
- fp_sign := fp_sign;
- else
- fp_sign := c(c'high);
- end if;
- end if;
- -- normalize
- fpresult := normalize (fract => ufract,
- expon => rexpon2,
- sign => fp_sign,
- sticky => sticky,
- fraction_width => fraction_width,
- exponent_width => exponent_width,
- round_style => round_style,
- denormalize => denormalize,
- nguard => guard);
- end if;
- return fpresult;
- end function mac;
-
- -- "rem" function
--- function remainder (
--- l, r : UNRESOLVED_float; -- floating point input
--- constant round_style : round_type := float_round_style; -- rounding option
--- constant guard : NATURAL := float_guard_bits; -- number of guard bits
--- constant check_error : BOOLEAN := float_check_error; -- check for errors
--- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
--- return UNRESOLVED_float is
--- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
--- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
--- constant divguard : NATURAL := guard; -- division guard bits
--- variable lfptype, rfptype : valid_fpstate;
--- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
--- variable ulfract, urfract : UNSIGNED (fraction_width downto 0);
--- variable fractr, fractl : UNSIGNED (fraction_width+divguard downto 0); -- right
--- variable rfract : UNSIGNED (fractr'range); -- result fraction
--- variable sfract : UNSIGNED (fraction_width+divguard downto 0); -- result fraction
--- variable exponl, exponr : SIGNED (exponent_width-1 downto 0); -- exponents
--- variable rexpon : SIGNED (exponent_width downto 0); -- result exponent
--- variable fp_sign : STD_ULOGIC; -- sign of result
--- variable shifty : INTEGER; -- denormal number shift
--- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
--- begin -- remainder
--- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
--- lfptype := isx;
--- else
--- lfptype := classfp (l, check_error);
--- rfptype := classfp (r, check_error);
--- end if;
--- if (lfptype = isx or rfptype = isx) then
--- fpresult := (others => 'X');
--- elsif (lfptype = nan or lfptype = quiet_nan)
--- or (rfptype = nan or rfptype = quiet_nan)
--- -- Return quiet NAN, IEEE754-1985-7.1,1
--- or (lfptype = pos_inf or lfptype = neg_inf) -- inf rem x
--- -- Return quiet NAN, IEEE754-1985-7.1,5
--- or (rfptype = pos_zero or rfptype = neg_zero) then -- x rem 0
--- -- Return quiet NAN, IEEE754-1985-7.1,5
--- fpresult := qnanfp (fraction_width => fraction_width,
--- exponent_width => exponent_width);
--- elsif (rfptype = pos_inf or rfptype = neg_inf) then -- x rem inf = 0
--- fpresult := zerofp (fraction_width => fraction_width,
--- exponent_width => exponent_width);
--- elsif (abs(l) < abs(r)) then
--- fpresult := l;
--- else
--- fp_sign := to_X01(l(l'high)); -- sign
--- lresize := resize (arg => to_x01(l),
--- exponent_width => exponent_width,
--- fraction_width => fraction_width,
--- denormalize_in => denormalize,
--- denormalize => denormalize);
--- lfptype := classfp (lresize, false); -- errors already checked
--- rresize := resize (arg => to_x01(r),
--- exponent_width => exponent_width,
--- fraction_width => fraction_width,
--- denormalize_in => denormalize,
--- denormalize => denormalize);
--- rfptype := classfp (rresize, false); -- errors already checked
--- fractl := (others => '0');
--- break_number (
--- arg => lresize,
--- fptyp => lfptype,
--- denormalize => denormalize,
--- fract => ulfract,
--- expon => exponl);
--- fractl (fraction_width+divguard downto divguard) := ulfract;
--- -- right side
--- fractr := (others => '0');
--- break_number (
--- arg => rresize,
--- fptyp => rfptype,
--- denormalize => denormalize,
--- fract => urfract,
--- expon => exponr);
--- fractr (fraction_width+divguard downto divguard) := urfract;
--- rexpon := (exponr(exponr'high)&exponr);
--- shifty := to_integer(exponl - rexpon);
--- if (shifty > 0) then
--- fractr := shift_right (fractr, shifty);
--- rexpon := rexpon + shifty;
--- end if;
--- if (fractr /= 0) then
--- -- rem
--- rfract := fractl rem fractr; -- unsigned rem
--- sfract := rfract (sfract'range); -- lower bits
--- -- normalize
--- fpresult := normalize (fract => sfract,
--- expon => rexpon,
--- sign => fp_sign,
--- fraction_width => fraction_width,
--- exponent_width => exponent_width,
--- round_style => round_style,
--- denormalize => denormalize,
--- nguard => divguard);
--- else
--- -- If we shift "fractr" so far that it becomes zero, return zero.
--- fpresult := zerofp (fraction_width => fraction_width,
--- exponent_width => exponent_width);
--- end if;
--- end if;
--- return fpresult;
--- end function remainder;
-
--- -- "mod" function
--- function modulo (
--- l, r : UNRESOLVED_float; -- floating point input
--- constant round_style : round_type := float_round_style; -- rounding option
--- constant guard : NATURAL := float_guard_bits; -- number of guard bits
--- constant check_error : BOOLEAN := float_check_error; -- check for errors
--- constant denormalize : BOOLEAN := float_denormalize) -- Use IEEE extended FP
--- return UNRESOLVED_float is
--- constant fraction_width : NATURAL := - mine(l'low, r'low); -- length of FP output fraction
--- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
--- variable lfptype, rfptype : valid_fpstate;
--- variable fpresult : UNRESOLVED_float (exponent_width downto -fraction_width);
--- variable remres : UNRESOLVED_float (exponent_width downto -fraction_width);
--- begin -- remainder
--- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
--- lfptype := isx;
--- else
--- lfptype := classfp (l, check_error);
--- rfptype := classfp (r, check_error);
--- end if;
--- if (lfptype = isx or rfptype = isx) then
--- fpresult := (others => 'X');
--- elsif (lfptype = nan or lfptype = quiet_nan)
--- or (rfptype = nan or rfptype = quiet_nan)
--- -- Return quiet NAN, IEEE754-1985-7.1,1
--- or (lfptype = pos_inf or lfptype = neg_inf) -- inf rem x
--- -- Return quiet NAN, IEEE754-1985-7.1,5
--- or (rfptype = pos_zero or rfptype = neg_zero) then -- x rem 0
--- -- Return quiet NAN, IEEE754-1985-7.1,5
--- fpresult := qnanfp (fraction_width => fraction_width,
--- exponent_width => exponent_width);
--- elsif (rfptype = pos_inf or rfptype = neg_inf) then -- x rem inf = 0
--- fpresult := zerofp (fraction_width => fraction_width,
--- exponent_width => exponent_width);
--- else
--- remres := remainder (l => abs(l),
--- r => abs(r),
--- round_style => round_style,
--- guard => guard,
--- check_error => false,
--- denormalize => denormalize);
--- -- MOD is the same as REM, but you do something different with
--- -- negative values
--- if (is_negative (l)) then
--- remres := - remres;
--- end if;
--- if (is_negative (l) = is_negative (r) or remres = 0) then
--- fpresult := remres;
--- else
--- fpresult := add (l => remres,
--- r => r,
--- round_style => round_style,
--- guard => guard,
--- check_error => false,
--- denormalize => denormalize);
--- end if;
--- end if;
--- return fpresult;
--- end function modulo;
-
- -- Square root of a floating point number. Done using Newton's Iteration.
--- function sqrt (
--- arg : UNRESOLVED_float; -- floating point input
--- constant round_style : round_type := float_round_style;
--- constant guard : NATURAL := float_guard_bits;
--- constant check_error : BOOLEAN := float_check_error;
--- constant denormalize : BOOLEAN := float_denormalize)
--- return UNRESOLVED_float is
--- constant fraction_width : NATURAL := guard-arg'low; -- length of FP output fraction
--- constant exponent_width : NATURAL := arg'high; -- length of FP output exponent
--- variable sign : STD_ULOGIC;
--- variable fpresult : float (arg'range);
--- variable fptype : valid_fpstate;
--- variable iexpon : SIGNED(exponent_width-1 downto 0); -- exponents
--- variable expon : SIGNED(exponent_width downto 0); -- exponents
--- variable ufact : ufixed (0 downto arg'low);
--- variable fact : ufixed (2 downto -fraction_width); -- fraction
--- variable resb : ufixed (fact'high+1 downto fact'low);
--- begin -- square root
--- fptype := Classfp (arg, check_error);
--- classcase : case fptype is
--- when isx =>
--- fpresult := (others => 'X');
--- when nan | quiet_nan |
--- -- Return quiet NAN, IEEE754-1985-7.1,1
--- neg_normal | neg_denormal | neg_inf => -- sqrt (neg)
--- -- Return quiet NAN, IEEE754-1985-7.1.6
--- fpresult := qnanfp (fraction_width => fraction_width-guard,
--- exponent_width => exponent_width);
--- when pos_inf => -- Sqrt (inf), return infinity
--- fpresult := pos_inffp (fraction_width => fraction_width-guard,
--- exponent_width => exponent_width);
--- when pos_zero => -- return 0
--- fpresult := zerofp (fraction_width => fraction_width-guard,
--- exponent_width => exponent_width);
--- when neg_zero => -- IEEE754-1985-6.3 return -0
--- fpresult := neg_zerofp (fraction_width => fraction_width-guard,
--- exponent_width => exponent_width);
--- when others =>
--- break_number (arg => arg,
--- denormalize => denormalize,
--- check_error => false,
--- fract => ufact,
--- expon => iexpon,
--- sign => sign);
--- expon := resize (iexpon+1, expon'length); -- get exponent
--- fact := resize (ufact, fact'high, fact'low);
--- if (expon(0) = '1') then
--- fact := fact sla 1; -- * 2.0
--- end if;
--- expon := shift_right (expon, 1); -- exponent/2
--- -- Newton's iteration - root := (1 + arg) / 2
--- resb := (fact + 1) sra 1;
--- for j in 0 to fraction_width/4 loop
--- -- root := (root + (arg/root))/2
--- resb := resize (arg => (resb + (fact/resb)) sra 1,
--- left_index => resb'high,
--- right_index => resb'low,
--- round_style => fixed_truncate,
--- overflow_style => fixed_wrap);
--- end loop;
--- fpresult := normalize (fract => resb,
--- expon => expon-1,
--- sign => '0',
--- exponent_width => arg'high,
--- fraction_width => -arg'low,
--- round_style => round_style,
--- denormalize => denormalize,
--- nguard => guard);
--- end case classcase;
--- return fpresult;
--- end function sqrt;
-
- function Is_Negative (arg : UNRESOLVED_float) return BOOLEAN is
- -- Technically -0 should return "false", but I'm leaving that case out.
- begin
- return (to_x01(arg(arg'high)) = '1');
- end function Is_Negative;
-
- -- compare functions
- -- =, /=, >=, <=, <, >
-
- function eq ( -- equal =
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN is
- variable lfptype, rfptype : valid_fpstate;
- variable is_equal, is_unordered : BOOLEAN;
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- equal
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- return false;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- end if;
- if (lfptype = neg_zero or lfptype = pos_zero) and
- (rfptype = neg_zero or rfptype = pos_zero) then
- is_equal := true;
- else
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- is_equal := (to_slv(lresize) = to_slv(rresize));
- end if;
- if (check_error) then
- is_unordered := Unordered (x => l,
- y => r);
- else
- is_unordered := false;
- end if;
- return is_equal and not is_unordered;
- end function eq;
-
- function lt ( -- less than <
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- variable lfptype, rfptype : valid_fpstate;
- variable expl, expr : UNSIGNED (exponent_width-1 downto 0);
- variable fractl, fractr : UNSIGNED (fraction_width-1 downto 0);
- variable is_less_than, is_unordered : BOOLEAN;
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- is_less_than := false;
- else
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- if to_x01(l(l'high)) = to_x01(r(r'high)) then -- sign bits
- expl := UNSIGNED(lresize(exponent_width-1 downto 0));
- expr := UNSIGNED(rresize(exponent_width-1 downto 0));
- if expl = expr then
- fractl := UNSIGNED (to_slv(lresize(-1 downto -fraction_width)));
- fractr := UNSIGNED (to_slv(rresize(-1 downto -fraction_width)));
- if to_x01(l(l'high)) = '0' then -- positive number
- is_less_than := (fractl < fractr);
- else
- is_less_than := (fractl > fractr); -- negative
- end if;
- else
- if to_x01(l(l'high)) = '0' then -- positive number
- is_less_than := (expl < expr);
- else
- is_less_than := (expl > expr); -- negative
- end if;
- end if;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- if (lfptype = neg_zero and rfptype = pos_zero) then
- is_less_than := false; -- -0 < 0 returns false.
- else
- is_less_than := (to_x01(l(l'high)) > to_x01(r(r'high)));
- end if;
- end if;
- end if;
- if check_error then
- is_unordered := Unordered (x => l,
- y => r);
- else
- is_unordered := false;
- end if;
- return is_less_than and not is_unordered;
- end function lt;
-
- function gt ( -- greater than >
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- variable lfptype, rfptype : valid_fpstate;
- variable expl, expr : UNSIGNED (exponent_width-1 downto 0);
- variable fractl, fractr : UNSIGNED (fraction_width-1 downto 0);
- variable is_greater_than : BOOLEAN;
- variable is_unordered : BOOLEAN;
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- greater_than
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- is_greater_than := false;
- else
- lresize := resize (arg => to_x01(l),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- rresize := resize (arg => to_x01(r),
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => denormalize,
- denormalize => denormalize);
- if to_x01(l(l'high)) = to_x01(r(r'high)) then -- sign bits
- expl := UNSIGNED(lresize(exponent_width-1 downto 0));
- expr := UNSIGNED(rresize(exponent_width-1 downto 0));
- if expl = expr then
- fractl := UNSIGNED (to_slv(lresize(-1 downto -fraction_width)));
- fractr := UNSIGNED (to_slv(rresize(-1 downto -fraction_width)));
- if to_x01(l(l'high)) = '0' then -- positive number
- is_greater_than := fractl > fractr;
- else
- is_greater_than := fractl < fractr; -- negative
- end if;
- else
- if to_x01(l(l'high)) = '0' then -- positive number
- is_greater_than := expl > expr;
- else
- is_greater_than := expl < expr; -- negative
- end if;
- end if;
- else
- lfptype := classfp (l, check_error);
- rfptype := classfp (r, check_error);
- if (lfptype = pos_zero and rfptype = neg_zero) then
- is_greater_than := false; -- 0 > -0 returns false.
- else
- is_greater_than := to_x01(l(l'high)) < to_x01(r(r'high));
- end if;
- end if;
- end if;
- if check_error then
- is_unordered := Unordered (x => l,
- y => r);
- else
- is_unordered := false;
- end if;
- return is_greater_than and not is_unordered;
- end function gt;
-
- -- purpose: /= function
- function ne ( -- not equal /=
- l, r : UNRESOLVED_float;
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN is
- variable is_equal, is_unordered : BOOLEAN;
- begin
- is_equal := eq (l => l,
- r => r,
- check_error => false,
- denormalize => denormalize);
- if check_error then
- is_unordered := Unordered (x => l,
- y => r);
- else
- is_unordered := false;
- end if;
- return not (is_equal and not is_unordered);
- end function ne;
-
- function le ( -- less than or equal to <=
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN is
- variable is_greater_than, is_unordered : BOOLEAN;
- begin
- is_greater_than := gt (l => l,
- r => r,
- check_error => false,
- denormalize => denormalize);
- if check_error then
- is_unordered := Unordered (x => l,
- y => r);
- else
- is_unordered := false;
- end if;
- return not is_greater_than and not is_unordered;
- end function le;
-
- function ge ( -- greater than or equal to >=
- l, r : UNRESOLVED_float; -- floating point input
- constant check_error : BOOLEAN := float_check_error;
- constant denormalize : BOOLEAN := float_denormalize)
- return BOOLEAN is
- variable is_less_than, is_unordered : BOOLEAN;
- begin
- is_less_than := lt (l => l,
- r => r,
- check_error => false,
- denormalize => denormalize);
- if check_error then
- is_unordered := Unordered (x => l,
- y => r);
- else
- is_unordered := false;
- end if;
- return not is_less_than and not is_unordered;
- end function ge;
-
- function \?=\ (L, R : UNRESOLVED_float) return STD_ULOGIC is
- constant fraction_width : NATURAL := -mine(l'low, r'low); -- length of FP output fraction
- constant exponent_width : NATURAL := maximum(l'high, r'high); -- length of FP output exponent
- variable lfptype, rfptype : valid_fpstate;
- variable is_equal, is_unordered : STD_ULOGIC;
- variable lresize, rresize : UNRESOLVED_float (exponent_width downto -fraction_width);
- begin -- ?=
- if (fraction_width = 0 or l'length < 7 or r'length < 7) then
- return 'X';
- else
- lfptype := classfp (l, float_check_error);
- rfptype := classfp (r, float_check_error);
- end if;
- if (lfptype = neg_zero or lfptype = pos_zero) and
- (rfptype = neg_zero or rfptype = pos_zero) then
- is_equal := '1';
- else
- lresize := resize (arg => l,
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => float_denormalize,
- denormalize => float_denormalize);
- rresize := resize (arg => r,
- exponent_width => exponent_width,
- fraction_width => fraction_width,
- denormalize_in => float_denormalize,
- denormalize