mirror of
https://github.com/fadden/6502bench.git
synced 2024-09-10 13:54:52 +00:00
For nonzero values we were leaving Z=prev, which is wrong when Z=0 because the AND result might be zero. Now if Z=1 we leave it alone, but if Z=0 we now set it to Z=?. Test 1003-flags-and-branches was testing for the (incorrect) behavior, so we're now running into a BRK. This is fine.
270 lines
4.0 KiB
ArmAsm
270 lines
4.0 KiB
ArmAsm
!cpu 65816
|
|
* = $1000
|
|
!as
|
|
!rs
|
|
clc
|
|
xce
|
|
sep #$ff
|
|
clv
|
|
cld
|
|
cli
|
|
clc
|
|
lda #$80
|
|
lda #$01
|
|
sed
|
|
sei
|
|
sec
|
|
lda #$ff
|
|
adc #$00
|
|
sep #$ff
|
|
rep #$80
|
|
rep #$40
|
|
rep #$20
|
|
!al
|
|
rep #$10
|
|
!rl
|
|
rep #$08
|
|
rep #$04
|
|
rep #$02
|
|
rep #$01
|
|
sep #$00
|
|
sep #$ff
|
|
!as
|
|
!rs
|
|
rep #$00
|
|
rep #$ff
|
|
!al
|
|
!rl
|
|
lda #$feed
|
|
sec
|
|
xce
|
|
!as
|
|
!rs
|
|
lda #$ff
|
|
rep #$30
|
|
lda #$ff
|
|
clc
|
|
xce
|
|
lda #$ff
|
|
rep #$20
|
|
!al
|
|
sep #$10
|
|
lda #$0000
|
|
ldx #$01
|
|
ldy #$02
|
|
sep #$20
|
|
!as
|
|
rep #$10
|
|
!rl
|
|
lda #$01
|
|
ldx #$0000
|
|
ldy #$0000
|
|
sep #$30
|
|
!rs
|
|
lda #$00
|
|
pha
|
|
plp
|
|
rep #$80
|
|
bpl L105F
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
L105F sep #$80
|
|
bpl @L1065
|
|
bmi @L1067
|
|
|
|
@L1065 !byte $00
|
|
!byte $00
|
|
|
|
@L1067 rep #$40
|
|
bvc @L106D
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L106D sep #$40
|
|
bvs @L1073
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L1073 rep #$01
|
|
bcc @L1079
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L1079 sep #$01
|
|
bcs @L107F
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L107F rep #$02
|
|
bne @L1085
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L1085 sep #$02
|
|
beq @L108B
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L108B sep #$ff
|
|
lda #$01
|
|
bne @L1093
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L1093 lda #$00
|
|
beq @L1099
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L1099 bpl @L109D
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L109D lda #$80
|
|
bmi @L10A3
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10A3 lda #$ff
|
|
and #$00
|
|
beq @L10AB
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10AB lda #$00
|
|
and #$ff
|
|
beq @L10B3
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10B3 lda #$ff
|
|
and #$7f
|
|
bne @L10BB
|
|
brk
|
|
|
|
!byte $db
|
|
|
|
@L10BB bpl @L10BF
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10BF lda #$ff
|
|
and #$80
|
|
bmi @L10C7
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10C7 lda #$00
|
|
ora #$00
|
|
beq @L10CF
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10CF ora #$01
|
|
bne @L10D5
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10D5 lda #$00
|
|
ora #$7f
|
|
bpl @L10DD
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10DD ora #$80
|
|
bmi @L10E3
|
|
|
|
!byte $00
|
|
!byte $db
|
|
|
|
@L10E3 lda @L10E3
|
|
sec
|
|
ror
|
|
bmi @L10EC
|
|
|
|
!byte $00
|
|
!byte $dc
|
|
|
|
@L10EC clc
|
|
ror
|
|
bpl @L10F2
|
|
|
|
!byte $00
|
|
!byte $dc
|
|
|
|
@L10F2 lda #$00
|
|
sec
|
|
rol
|
|
bne @L10FA
|
|
|
|
!byte $00
|
|
!byte $dc
|
|
|
|
@L10FA clc
|
|
php
|
|
sec
|
|
plp
|
|
bcc @L1102
|
|
|
|
!byte $00
|
|
!byte $00
|
|
|
|
@L1102 sec
|
|
bcs @L1106
|
|
|
|
@L1105 clc
|
|
@L1106 lda $33
|
|
beq @L1105
|
|
bcs @L110E
|
|
lda $44
|
|
@L110E nop
|
|
rep #$20
|
|
!al
|
|
sep #$10
|
|
jsr @L112A
|
|
rep #$30
|
|
!rl
|
|
jsr @L1130
|
|
sep #$30
|
|
!as
|
|
!rs
|
|
jsr @L1130
|
|
rep #$20
|
|
!al
|
|
sep #$10
|
|
jsr @L112A
|
|
sep #$30
|
|
!as
|
|
rts
|
|
|
|
!al
|
|
@L112A lda #$1234
|
|
ldx #$ff
|
|
rts
|
|
|
|
!as
|
|
@L1130 lda #$ff
|
|
ldx #$ee
|
|
ldy #$dd
|
|
rts
|
|
|