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28 lines
235 B
ArmAsm

;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Decrement the stackpointer by 4
;
.export decsp4
.importzp sp
.proc decsp4
lda sp
sec
sbc #4
sta sp
bcc @L1
rts
@L1: dec sp+1
rts
.endproc