diff options
| author | Duncan Smith | 2011-06-24 02:51:22 -0700 |
|---|---|---|
| committer | Duncan Smith | 2011-06-24 02:51:22 -0700 |
| commit | f9db14c865ee2585e65bbc20ad7fc5d35f5894f5 (patch) | |
| tree | acf4876fec24bfe8dc9d958ae9a20811a7c23f61 /opcodes.asm.m4 | |
| parent | 81ed0f397273503abf97daa6714383d5ab1d365f (diff) | |
HOLY CRAP IT PRINTED A STRINGv0.1
Diffstat (limited to 'opcodes.asm.m4')
| -rw-r--r-- | opcodes.asm.m4 | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/opcodes.asm.m4 b/opcodes.asm.m4 index 63ea0dc..31146c2 100644 --- a/opcodes.asm.m4 +++ b/opcodes.asm.m4 @@ -50,7 +50,7 @@ PUTW MACRO ; move.b d0,(a0) ENDM - ;; Push the word in \1 (register) using stack register a4. + ;; Push the word in \1 (register) using stack register esp. ;; Sadly, I can't trust the stack register to be aligned. ;; Destroys d2. @@ -60,11 +60,11 @@ PUTW MACRO ; PUSHW MACRO move.w \1,d2 LOHI d2 ;slow - move.b d2,-(a4) ; high byte - move.b \1,-(a4) ; low byte + move.b d2,-(esp) ; high byte + move.b \1,-(esp) ; low byte ENDM - ;; Pop the word at the top of stack a4 into \1. + ;; Pop the word at the top of stack esp into \1. ;; Destroys d0. ;; \1_h <- (SP+1) @@ -101,7 +101,7 @@ _align SET 0 START MACRO ORG emu_plain_op+_align _align SET _align+$40 ; opcode routine length - jmp do_interrupt ; for interrupt routines + bra.w do_interrupt ; for interrupt routines ENDM ;; LOHI/HILO are hideously slow for instructions used often. @@ -1710,6 +1710,7 @@ OPCODE(b7,« ;; COMPARE instruction + ;; Tests the argument against A F_CP_B MACRO ;; XXX deal with \2 or \1 being d1 or d0 move.b \2,d1 @@ -1797,7 +1798,7 @@ OPCODE(c1,« ; S10 T ;; PC <- immed.w OPCODE(c2,« bsr f_norm_z - bne.s emu_op_c3 + beq.s emu_op_c3 add.l #2,epc ») ;nok @@ -1809,7 +1810,6 @@ OPCODE(c3,« bsr deref movea.l a0,epc »,36,,12) - ;nok ;; CALL NZ,immed.w ;; If ~Z, CALL immed.w @@ -1871,7 +1871,7 @@ OPCODE(c9,« ;; If Z, jump OPCODE(ca,« bsr f_norm_z - beq emu_op_c3 + bne emu_op_c3 add.l #2,epc ») ;nok |