;
; Ullrich von Bassewitz, 08.10.1998
;
; CC65 runtime: += operator for ints on the stack
;

       	.export		addeq0sp, addeqysp
	.importzp	sp

addeq0sp:
	ldy	#0
addeqysp:
	clc
	adc	(sp),y
	sta	(sp),y
	pha
	iny
	txa
	adc	(sp),y
	sta	(sp),y
	tax
	pla
	rts