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cc65/libsrc/runtime/staxspp.s

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;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Store a/x indirect into address at top of stack
;
.export staxspp
.import incsp2
.importzp sp, ptr1
.proc staxspp
.ifpc02
pha
lda (sp)
sta ptr1
ldy #1
lda (sp),y
sta ptr1+1
txa
sta (ptr1),y
pla
sta (ptr1)
.else
pha
ldy #0
lda (sp),y
sta ptr1
iny
lda (sp),y
sta ptr1+1
txa
sta (ptr1),y
pla
dey
sta (ptr1),y
.endif
jmp incsp2 ; Drop address
.endproc