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cc65/libsrc/runtime/decsp6.s

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;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Decrement the stackpointer by 6
;
.export decsp6
.importzp sp
.proc decsp6
lda sp
sec
sbc #6
sta sp
bcc @L1
rts
@L1: dec sp+1
rts
.endproc