diff options
Diffstat (limited to 'firmware/dsp56k')
| -rw-r--r-- | firmware/dsp56k/bootstrap.asm | 98 | ||||
| -rw-r--r-- | firmware/dsp56k/bootstrap.bin.ihex | 26 |
2 files changed, 124 insertions, 0 deletions
diff --git a/firmware/dsp56k/bootstrap.asm b/firmware/dsp56k/bootstrap.asm new file mode 100644 index 0000000..10d8919 --- /dev/null +++ b/firmware/dsp56k/bootstrap.asm @@ -0,0 +1,98 @@ +; Author: Frederik Noring <noring@nocrew.org> +; +; This file is subject to the terms and conditions of the GNU General Public +; License. See the file COPYING in the main directory of this archive +; for more details. + +; DSP56k loader + +; Host Interface +M_BCR EQU $FFFE ; Port A Bus Control Register +M_PBC EQU $FFE0 ; Port B Control Register +M_PBDDR EQU $FFE2 ; Port B Data Direction Register +M_PBD EQU $FFE4 ; Port B Data Register +M_PCC EQU $FFE1 ; Port C Control Register +M_PCDDR EQU $FFE3 ; Port C Data Direction Register +M_PCD EQU $FFE5 ; Port C Data Register + +M_HCR EQU $FFE8 ; Host Control Register +M_HSR EQU $FFE9 ; Host Status Register +M_HRX EQU $FFEB ; Host Receive Data Register +M_HTX EQU $FFEB ; Host Transmit Data Register + +; SSI, Synchronous Serial Interface +M_RX EQU $FFEF ; Serial Receive Data Register +M_TX EQU $FFEF ; Serial Transmit Data Register +M_CRA EQU $FFEC ; SSI Control Register A +M_CRB EQU $FFED ; SSI Control Register B +M_SR EQU $FFEE ; SSI Status Register +M_TSR EQU $FFEE ; SSI Time Slot Register + +; Exception Processing +M_IPR EQU $FFFF ; Interrupt Priority Register + + org P:$0 +start jmp <$40 + + org P:$40 +; ; Zero 16384 DSP X and Y words +; clr A #0,r0 +; clr B #0,r4 +; do #64,<_block1 +; rep #256 +; move A,X:(r0)+ B,Y:(r4)+ +;_block1 ; Zero (32768-512) Program words +; clr A #512,r0 +; do #126,<_block2 +; rep #256 +; move A,P:(r0)+ +;_block2 + + ; Copy DSP program control + move #real,r0 + move #upload,r1 + do #upload_end-upload,<_copy + move P:(r0)+,x0 + move x0,P:(r1)+ +_copy movep #>4,X:<<M_HCR + movep #>$c00,X:<<M_IPR + and #<$fe,mr + jmp upload + +real + org P:$7ea9 +upload + movep #>1,X:<<M_PBC + movep #>0,X:<<M_BCR + +next jclr #0,X:<<M_HSR,* + movep X:<<M_HRX,A + move #>3,x0 + cmp x0,A #>1,x0 + jeq <$0 +_get_address + jclr #0,X:<<M_HSR,_get_address + movep X:<<M_HRX,r0 +_get_length + jclr #0,X:<<M_HSR,_get_length + movep X:<<M_HRX,y0 + cmp x0,A #>2,x0 + jeq load_X + cmp x0,A + jeq load_Y + +load_P do y0,_load + jclr #0,X:<<M_HSR,* + movep X:<<M_HRX,P:(r0)+ +_load jmp next +load_X do y0,_load + jclr #0,X:<<M_HSR,* + movep X:<<M_HRX,X:(r0)+ +_load jmp next +load_Y do y0,_load + jclr #0,X:<<M_HSR,* + movep X:<<M_HRX,Y:(r0)+ +_load jmp next + +upload_end + end diff --git a/firmware/dsp56k/bootstrap.bin.ihex b/firmware/dsp56k/bootstrap.bin.ihex new file mode 100644 index 0000000..233f21f --- /dev/null +++ b/firmware/dsp56k/bootstrap.bin.ihex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bootstrap code */ |
