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cc65/libsrc/runtime/pushwsp.s

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;
; Ullrich von Bassewitz, 31.08.1998
;
; CC65 runtime: Load word from stack slot and push
;
.export pushwysp, pushw0sp
.import pushax
.importzp sp
pushw0sp:
ldy #1
pushwysp:
lda (sp),y ; get hi byte
tax
dey
lda (sp),y ; get lo byte
jmp pushax ; push that