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kickc/src/main/fragment/mos6502-common/pwsc1_derefidx_vbuyy=pwsc1_derefidx_vbuyy_plus_pbsc2_derefidx_vbuxx.asm
2023-04-24 05:27:26 +00:00

13 lines
108 B
NASM

lda {c2},x
sta $ff
clc
adc {c1},y
sta {c1},y
iny
lda $ff
ora #$7f
bmi !+
lda #0
!:
adc {c1}+1,y
sta {c1}+1,y