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cc65/libsrc/runtime/ldauisp.s

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;
; Ullrich von Bassewitz, 11.04.1999
;
; CC65 runtime: Load an unsigned char indirect from pointer somewhere in stack
;
.export ldaui0sp, ldauiysp
.importzp sp, ptr1
ldaui0sp:
ldy #1
ldauiysp:
lda (sp),y
sta ptr1+1
dey
lda (sp),y
sta ptr1
txa
tay
ldx #0
lda (ptr1),y
rts