.text

#include "hwregs.h"

	.extern spr_shadow
	.extern spr_count
	.extern dma_systovram

	.globl spr_submit
spr_submit:
	move.w spr_count, %d0
	tst.w %d0
	bne.s 0f
	| if spr_count is zero, upload a single null sprite
	addq.w #1, %d0
0:	ext.l %d0
	lsl.w #2, %d0			| 4 words per sprite
	move.l %d0, -(%sp)
	pea spr_shadow
	pea 0xd000.w			| we placed the spirte table at d000
	jsr dma_systovram
	addq.l #8, %sp
	addq.l #4, %sp
	rts

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