.globl _ubox_set_sprite_attr
.globl _ubox_write_vm

SP_ATTRS = 0x1b00

_ubox_set_sprite_attr::
	ld hl, #2
	add hl, sp

	ld e, (hl)
	inc hl
	ld d, (hl)
	inc hl

	ld l, (hl)
	sla l
	sla l
	ld h, #0
	ld bc, #SP_ATTRS
	add hl, bc

	push de
	ld bc, #4
	push bc
	push hl
	call _ubox_write_vm
	pop af
	pop af
	pop af
	ret