mirror of
https://github.com/fadden/6502bench.git
synced 2024-11-30 01:50:10 +00:00
98914e9f80
The 65816 definition makes it a two-byte instruction, like COP. On the 6502 it acted like a two-byte instruction, but in practice very few assemblers treat it that way. Very few humans, for that matter. So it's now treated as a single byte instruction, with the following byte encoded as a data value.
298 lines
6.1 KiB
ArmAsm
298 lines
6.1 KiB
ArmAsm
.setcpu "6502X"
|
|
; .segment "SEG000"
|
|
.org $1000
|
|
jsr L1035
|
|
jsr L1038
|
|
jsr L1059
|
|
jsr L107D
|
|
jsr L109E
|
|
jsr L10BD
|
|
jsr L10C0
|
|
jsr L10E1
|
|
jsr L1100
|
|
jsr L1103
|
|
jsr L1116
|
|
jsr L1124
|
|
jsr L1169
|
|
jsr L11AE
|
|
jsr L11F3
|
|
jsr L1238
|
|
nop
|
|
nop
|
|
nop
|
|
brk
|
|
|
|
.byte $ff
|
|
|
|
L1035: ora ($ff,x)
|
|
jam
|
|
|
|
L1038: slo ($ff,x)
|
|
.byte $04,$ff
|
|
ora $ff
|
|
asl $ff
|
|
slo $ff
|
|
php
|
|
ora #$ff
|
|
asl A
|
|
anc #$ff
|
|
.byte $0c,$ff,$fe
|
|
ora $feff
|
|
asl $feff
|
|
slo $feff
|
|
bpl L1056
|
|
L1056: ora ($ff),y
|
|
.byte $12
|
|
|
|
L1059: slo ($ff),y
|
|
.byte $14,$ff
|
|
ora $ff,x
|
|
asl $ff,x
|
|
slo $ff,x
|
|
clc
|
|
ora $feff,y
|
|
.byte $1a
|
|
slo $feff,y
|
|
.byte $1c,$ff,$fe
|
|
ora $feff,x
|
|
asl $feff,x
|
|
slo $feff,x
|
|
jsr $feff
|
|
and ($ff,x)
|
|
.byte $22
|
|
|
|
L107D: rla ($ff,x)
|
|
bit $ff
|
|
and $ff
|
|
rol $ff
|
|
rla $ff
|
|
plp
|
|
and #$ff
|
|
rol A
|
|
.byte $2b,$ff
|
|
bit $feff
|
|
and $feff
|
|
rol $feff
|
|
rla $feff
|
|
bmi L109B
|
|
L109B: and ($ff),y
|
|
.byte $32
|
|
|
|
L109E: rla ($ff),y
|
|
.byte $34,$ff
|
|
and $ff,x
|
|
rol $ff,x
|
|
rla $ff,x
|
|
sec
|
|
and $feff,y
|
|
.byte $3a
|
|
rla $feff,y
|
|
.byte $3c,$ff,$fe
|
|
and $feff,x
|
|
rol $feff,x
|
|
rla $feff,x
|
|
rti
|
|
|
|
L10BD: eor ($ff,x)
|
|
.byte $42
|
|
|
|
L10C0: sre ($ff,x)
|
|
.byte $44,$ff
|
|
eor $ff
|
|
lsr $ff
|
|
sre $ff
|
|
pha
|
|
eor #$ff
|
|
lsr A
|
|
alr #$ff
|
|
jmp L10D3
|
|
|
|
L10D3: eor $feff
|
|
lsr $feff
|
|
sre $feff
|
|
bvc L10DE
|
|
L10DE: eor ($ff),y
|
|
.byte $52
|
|
|
|
L10E1: sre ($ff),y
|
|
.byte $54,$ff
|
|
eor $ff,x
|
|
lsr $ff,x
|
|
sre $ff,x
|
|
cli
|
|
eor $feff,y
|
|
.byte $5a
|
|
sre $feff,y
|
|
.byte $5c,$ff,$fe
|
|
eor $feff,x
|
|
lsr $feff,x
|
|
sre $feff,x
|
|
rts
|
|
|
|
L1100: adc ($ff,x)
|
|
.byte $62
|
|
|
|
L1103: rra ($ff,x)
|
|
.byte $64,$ff
|
|
adc $ff
|
|
ror $ff
|
|
rra $ff
|
|
pla
|
|
adc #$ff
|
|
ror A
|
|
arr #$ff
|
|
jmp ($feff)
|
|
|
|
L1116: adc $feff
|
|
ror $feff
|
|
rra $feff
|
|
bvs L1121
|
|
L1121: adc ($ff),y
|
|
.byte $72
|
|
|
|
L1124: rra ($ff),y
|
|
.byte $74,$ff
|
|
adc $ff,x
|
|
ror $ff,x
|
|
rra $ff,x
|
|
sei
|
|
adc $feff,y
|
|
.byte $7a
|
|
rra $feff,y
|
|
.byte $7c,$ff,$fe
|
|
adc $feff,x
|
|
ror $feff,x
|
|
rra $feff,x
|
|
.byte $80,$ff
|
|
sta ($ff,x)
|
|
.byte $82,$ff
|
|
sax ($ff,x)
|
|
sty $ff
|
|
sta $ff
|
|
stx $ff
|
|
sax $ff
|
|
dey
|
|
.byte $89,$ff
|
|
txa
|
|
ane #$ff
|
|
sty $feff
|
|
sta $feff
|
|
stx $feff
|
|
sax $feff
|
|
bcc L1166
|
|
L1166: sta ($ff),y
|
|
.byte $92
|
|
|
|
L1169: sha ($ff),y
|
|
sty $ff,x
|
|
sta $ff,x
|
|
stx $ff,y
|
|
sax $ff,y
|
|
tya
|
|
sta $feff,y
|
|
txs
|
|
tas $feff,y
|
|
shy $feff,x
|
|
sta $feff,x
|
|
shx $feff,y
|
|
sha $feff,y
|
|
ldy #$ff
|
|
lda ($ff,x)
|
|
ldx #$ff
|
|
lax ($ff,x)
|
|
ldy $ff
|
|
lda $ff
|
|
ldx $ff
|
|
lax $ff
|
|
tay
|
|
lda #$ff
|
|
tax
|
|
lax #$ff
|
|
ldy $feff
|
|
lda $feff
|
|
ldx $feff
|
|
lax $feff
|
|
bcs L11AB
|
|
L11AB: lda ($ff),y
|
|
.byte $b2
|
|
|
|
L11AE: lax ($ff),y
|
|
ldy $ff,x
|
|
lda $ff,x
|
|
ldx $ff,y
|
|
lax $ff,y
|
|
clv
|
|
lda $feff,y
|
|
tsx
|
|
las $feff,y
|
|
ldy $feff,x
|
|
lda $feff,x
|
|
ldx $feff,y
|
|
lax $feff,y
|
|
cpy #$ff
|
|
cmp ($ff,x)
|
|
.byte $c2,$ff
|
|
dcp ($ff,x)
|
|
cpy $ff
|
|
cmp $ff
|
|
dec $ff
|
|
dcp $ff
|
|
iny
|
|
cmp #$ff
|
|
dex
|
|
axs #$ff
|
|
cpy $feff
|
|
cmp $feff
|
|
dec $feff
|
|
dcp $feff
|
|
bne L11F0
|
|
L11F0: cmp ($ff),y
|
|
.byte $d2
|
|
|
|
L11F3: dcp ($ff),y
|
|
.byte $d4,$ff
|
|
cmp $ff,x
|
|
dec $ff,x
|
|
dcp $ff,x
|
|
cld
|
|
cmp $feff,y
|
|
.byte $da
|
|
dcp $feff,y
|
|
.byte $dc,$ff,$fe
|
|
cmp $feff,x
|
|
dec $feff,x
|
|
dcp $feff,x
|
|
cpx #$ff
|
|
sbc ($ff,x)
|
|
.byte $e2,$ff
|
|
isc ($ff,x)
|
|
cpx $ff
|
|
sbc $ff
|
|
inc $ff
|
|
isc $ff
|
|
inx
|
|
sbc #$ff
|
|
nop
|
|
.byte $eb,$ff
|
|
cpx $feff
|
|
sbc $feff
|
|
inc $feff
|
|
isc $feff
|
|
beq L1235
|
|
L1235: sbc ($ff),y
|
|
.byte $f2
|
|
|
|
L1238: isc ($ff),y
|
|
.byte $f4,$ff
|
|
sbc $ff,x
|
|
inc $ff,x
|
|
isc $ff,x
|
|
sed
|
|
sbc $feff,y
|
|
.byte $fa
|
|
isc $feff,y
|
|
.byte $fc,$ff,$fe
|
|
sbc $feff,x
|
|
inc $feff,x
|
|
isc $feff,x
|