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cc65/libsrc/runtime/popa.s

30 lines
496 B
ArmAsm

;
; Ullrich von Bassewitz, 25.10.2000
;
; CC65 runtime: Pop a from stack
;
.export popa
.importzp sp
.macpack cpu
.proc popa
.if (.cpu .bitand ::CPU_ISET_65SC02)
lda (sp)
.else
ldy #0 ; (2)
lda (sp),y ; (7) Read byte
.endif
inc sp ; (12)
beq @L1 ; (14)
rts ; (20)
@L1: inc sp+1
rts
.endproc