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author | Bert Lange <b.lange@hzdr.de> | 2015-04-15 13:36:55 +0200 |
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committer | Bert Lange <b.lange@hzdr.de> | 2015-04-15 13:36:55 +0200 |
commit | a1c964908b51599bf624bd2d253419c7e629f195 (patch) | |
tree | 06125d59e83b7dde82d1bb57bc0e09ca83451b98 /zpu/hdl/zy2000/zpupkg.vhd | |
parent | bbfe29a15f11548eb7c9fa71dcb4d2d18c164a53 (diff) | |
parent | 8679e4f91dcae05aef40f96629f33f0f4161f14a (diff) | |
download | zpu-a1c964908b51599bf624bd2d253419c7e629f195.zip zpu-a1c964908b51599bf624bd2d253419c7e629f195.tar.gz |
Merge branch 'master' of https://github.com/zylin/zpu
Diffstat (limited to 'zpu/hdl/zy2000/zpupkg.vhd')
-rw-r--r-- | zpu/hdl/zy2000/zpupkg.vhd | 168 |
1 files changed, 168 insertions, 0 deletions
diff --git a/zpu/hdl/zy2000/zpupkg.vhd b/zpu/hdl/zy2000/zpupkg.vhd new file mode 100644 index 0000000..a7e6cf1 --- /dev/null +++ b/zpu/hdl/zy2000/zpupkg.vhd @@ -0,0 +1,168 @@ +library IEEE; +use IEEE.STD_LOGIC_1164.all; +use IEEE.STD_LOGIC_ARITH.all; + +library work; +use work.zpu_config.all; + +package zpupkg is + + -- This bit is set for read/writes to IO + -- FIX!!! eventually this should be set to wordSize-1 so as to + -- to make the address of IO independent of amount of memory + -- reserved for CPU. Requires trivial tweaks in toolchain/runtime + -- libraries. + + constant byteBits : integer := wordPower-3; -- # of bits in a word that addresses bytes + constant maxAddrBit : integer := maxAddrBitIncIO-1; + constant ioBit : integer := maxAddrBit+1; + constant wordSize : integer := 2**wordPower; + constant wordBytes : integer := wordSize/8; + constant minAddrBit : integer := byteBits; + -- configurable internal stack size. Probably going to be 16 after toolchain is done + constant stack_bits : integer := 5; + constant stack_size : integer := 2**stack_bits; + + component dualport_ram is + port (clk : in std_logic; + memAWriteEnable : in std_logic; + memAAddr : in std_logic_vector(maxAddrBit downto minAddrBit); + memAWrite : in std_logic_vector(wordSize-1 downto 0); + memARead : out std_logic_vector(wordSize-1 downto 0); + memBWriteEnable : in std_logic; + memBAddr : in std_logic_vector(maxAddrBit downto minAddrBit); + memBWrite : in std_logic_vector(wordSize-1 downto 0); + memBRead : out std_logic_vector(wordSize-1 downto 0)); + end component; + + component dram is + port (clk : in std_logic; + areset : in std_logic; + mem_writeEnable : in std_logic; + mem_readEnable : in std_logic; + mem_addr : in std_logic_vector(maxAddrBit downto 0); + mem_write : in std_logic_vector(wordSize-1 downto 0); + mem_read : out std_logic_vector(wordSize-1 downto 0); + mem_busy : out std_logic; + mem_writeMask : in std_logic_vector(wordBytes-1 downto 0)); + end component; + + + component trace is + port( + clk : in std_logic; + begin_inst : in std_logic; + pc : in std_logic_vector(maxAddrBitIncIO downto 0); + opcode : in std_logic_vector(7 downto 0); + sp : in std_logic_vector(maxAddrBitIncIO downto minAddrBit); + memA : in std_logic_vector(wordSize-1 downto 0); + memB : in std_logic_vector(wordSize-1 downto 0); + busy : in std_logic; + intSp : in std_logic_vector(stack_bits-1 downto 0) + ); + end component; + + component zpu_core is + port ( clk : in std_logic; + areset : in std_logic; + enable : in std_logic; + mem_req : out std_logic; + mem_we : out std_logic; + mem_ack : in std_logic; + mem_read : in std_logic_vector(wordSize-1 downto 0); + mem_write : out std_logic_vector(wordSize-1 downto 0); + out_mem_addr : out std_logic_vector(maxAddrBitIncIO downto 0); + mem_writeMask: out std_logic_vector(wordBytes-1 downto 0); + interrupt : in std_logic; + break : out std_logic; + zpu_status : out std_logic_vector(63 downto 0)); + end component; + + + + component timer is + port( + clk : in std_logic; + areset : in std_logic; + sample : in std_logic; + reset : in std_logic; + counter : out std_logic_vector(63 downto 0)); + end component; + + component zpuio is + port ( areset : in std_logic; + cpu_clk : in std_logic; + clk_status : in std_logic_vector(2 downto 0); + cpu_din : in std_logic_vector(15 downto 0); + cpu_a : in std_logic_vector(20 downto 0); + cpu_we : in std_logic_vector(1 downto 0); + cpu_re : in std_logic; + cpu_dout : inout std_logic_vector(15 downto 0)); + end component; + + + + + -- opcode decode constants + constant OpCode_Im : std_logic_vector(7 downto 7) := "1"; + constant OpCode_StoreSP : std_logic_vector(7 downto 5) := "010"; + constant OpCode_LoadSP : std_logic_vector(7 downto 5) := "011"; + constant OpCode_Emulate : std_logic_vector(7 downto 5) := "001"; + constant OpCode_AddSP : std_logic_vector(7 downto 4) := "0001"; + constant OpCode_Short : std_logic_vector(7 downto 4) := "0000"; + + constant OpCode_Break : std_logic_vector(3 downto 0) := "0000"; + constant OpCode_Shiftleft: std_logic_vector(3 downto 0) := "0001"; + constant OpCode_PushSP : std_logic_vector(3 downto 0) := "0010"; + constant OpCode_PushInt : std_logic_vector(3 downto 0) := "0011"; + + constant OpCode_PopPC : std_logic_vector(3 downto 0) := "0100"; + constant OpCode_Add : std_logic_vector(3 downto 0) := "0101"; + constant OpCode_And : std_logic_vector(3 downto 0) := "0110"; + constant OpCode_Or : std_logic_vector(3 downto 0) := "0111"; + + constant OpCode_Load : std_logic_vector(3 downto 0) := "1000"; + constant OpCode_Not : std_logic_vector(3 downto 0) := "1001"; + constant OpCode_Flip : std_logic_vector(3 downto 0) := "1010"; + constant OpCode_Nop : std_logic_vector(3 downto 0) := "1011"; + + constant OpCode_Store : std_logic_vector(3 downto 0) := "1100"; + constant OpCode_PopSP : std_logic_vector(3 downto 0) := "1101"; + constant OpCode_Compare : std_logic_vector(3 downto 0) := "1110"; + constant OpCode_PopInt : std_logic_vector(3 downto 0) := "1111"; + + constant OpCode_Lessthan : std_logic_vector(5 downto 0) := conv_std_logic_vector(36, 6); + constant OpCode_Lessthanorequal : std_logic_vector(5 downto 0) := conv_std_logic_vector(37, 6); + constant OpCode_Ulessthan : std_logic_vector(5 downto 0) := conv_std_logic_vector(38, 6); + constant OpCode_Ulessthanorequal : std_logic_vector(5 downto 0) := conv_std_logic_vector(39, 6); + + constant OpCode_Swap : std_logic_vector(5 downto 0) := conv_std_logic_vector(40, 6); + constant OpCode_Mult : std_logic_vector(5 downto 0) := conv_std_logic_vector(41, 6); + + constant OpCode_Lshiftright : std_logic_vector(5 downto 0) := conv_std_logic_vector(42, 6); + constant OpCode_Ashiftleft : std_logic_vector(5 downto 0) := conv_std_logic_vector(43, 6); + constant OpCode_Ashiftright : std_logic_vector(5 downto 0) := conv_std_logic_vector(44, 6); + constant OpCode_Call : std_logic_vector(5 downto 0) := conv_std_logic_vector(45, 6); + + constant OpCode_Eq : std_logic_vector(5 downto 0) := conv_std_logic_vector(46, 6); + constant OpCode_Neq : std_logic_vector(5 downto 0) := conv_std_logic_vector(47, 6); + + constant OpCode_Sub : std_logic_vector(5 downto 0) := conv_std_logic_vector(49, 6); + constant OpCode_Loadb : std_logic_vector(5 downto 0) := conv_std_logic_vector(51, 6); + constant OpCode_Storeb : std_logic_vector(5 downto 0) := conv_std_logic_vector(52, 6); + + constant OpCode_Eqbranch : std_logic_vector(5 downto 0) := conv_std_logic_vector(55, 6); + constant OpCode_Neqbranch : std_logic_vector(5 downto 0) := conv_std_logic_vector(56, 6); + constant OpCode_Poppcrel : std_logic_vector(5 downto 0) := conv_std_logic_vector(57, 6); + + constant OpCode_Pushspadd : std_logic_vector(5 downto 0) := conv_std_logic_vector(61, 6); + constant OpCode_Mult16x16 : std_logic_vector(5 downto 0) := conv_std_logic_vector(62, 6); + constant OpCode_Callpcrel : std_logic_vector(5 downto 0) := conv_std_logic_vector(63, 6); + + + + constant OpCode_Size : integer := 8; + + + +end zpupkg; |