LRControl:
STZ $1411
LDA $17
AND #$30
CMP #$10 : BEQ .right
CMP #$20 : BEQ .left
RTL
.left
REP #$20
LDA $1462
SEC : SBC #$0003
STA $1462
SEP #$20
RTL
.right
REP #$20
LDA $1462
CLC : ADC #$0003
STA $1462
SEP #$20
RTL

back to listings