xref	_VBlankCnt
	xdef	_VBlankInterrupt


_VBlankInterrupt
	add.l	#1,_VBlankCnt	; increment counter
	move.l	#$DFF000,a0	; some interupts require this (custom chips adr in A0)
	move.l	#-1,d0		; clear Z-flag
	rts

.