ld h,0
	ld a,l
	and 7
	ld b,a
	xor l
	rrca
	rrca
	rrca
	ld l,a
	add hl,de
	ld de,12
	cp e
	ret nc
	inc b
	ld a,1
_
	rrca
	djnz -_
	ld c,a
	ld b,64
_
	ld a,(hl)
	or c
	ld (hl),a
	add hl,de
	djnz -_
	ret