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cc65/libsrc/runtime/ldau0sp.s

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;
; Ullrich von Bassewitz, 11.04.1999
;
; CC65 runtime: Load an unsigned char indirect from pointer somewhere in stack
;
.export ldau00sp, ldau0ysp
.importzp sp, ptr1
ldau00sp:
ldy #1
ldau0ysp:
lda (sp),y
sta ptr1+1
dey
lda (sp),y
sta ptr1
ldx #0
lda (ptr1,x)
rts