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Applerm-II
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Bug fix on adc condition flag updates

This commit is contained in:
Takashi Toyoshima 2014-12-07 14:29:14 +09:00
parent ff1f7b8b2f
commit ff26481127
1 changed files with 3 additions and 2 deletions
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5
6502.S
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@ -311,7 +311,7 @@
add r1, r1, r0
movs r2, #FLAG_C
tst SR, r2
bne 1f
beq 1f
adds r1, r1, #1
1:
movs r2, #FLAG_D
@ -359,6 +359,7 @@
lsrs r0, r0, #8
bcc 1f
__se FLAG_V
1:
mov RA, r2
adds PC, PC, #1
.endm
@ -563,7 +564,7 @@
subs r1, r1, r0
movs r2, #FLAG_C
tst SR, r2
beq 1f
bne 1f
subs r1, r1, #1
1:
movs r2, #FLAG_D