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31 lines
636 B
ArmAsm
31 lines
636 B
ArmAsm
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; Ullrich von Bassewitz, 31.08.1998
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; CC65 runtime: Push word from stack
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;
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.export pushb, pushbidx
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.import pushax
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.importzp ptr1
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.macpack cpu
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pushbidx:
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sty ptr1
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clc
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adc ptr1
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bcc pushb
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inx
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pushb: sta ptr1
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stx ptr1+1
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ldx #0 ; Load index/high byte
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.if (.cpu .bitand CPU_ISET_65SC02)
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lda (ptr1) ; Save one cycle for the C02
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.else
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lda (ptr1,x)
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.endif
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bpl L1
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dex ; Make high byte FF
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L1: jmp pushax
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