bitref_a1:
	.db	 0,  0,  0,  0,  0,  0,  0,  0, 16, 16, 16, 16, 16, 16, 16, 16
bitref_a2:
	.db	 0,  0,  0,  0, 16, 16, 16, 16, 16, 16, 16, 16, 32, 32, 32, 32
bitref_a3:
	.db	 0,  0, 16, 16,  0,  0, 16, 16, 16, 16, 32, 32, 16, 16, 32, 32
bitref_a4:
	.db	 0,  0, 16, 16, 16, 16, 32, 32, 16, 16, 32, 32, 32, 32, 48, 48
bitref_a:
	.db	0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 1, 0, 1, 1, 1
	.db	0, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1, 1, 1, 1, 0, 0
	.db	0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0
	.db	1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

bitref_b1:
	.db	 0,  0,  0,  0, 16, 16, 16, 16, 16, 16, 16, 16, 32, 32, 32, 32
bitref_b2:
	.db	 0,  0,  0,  0, 16, 16, 16, 16,  0,  0,  0,  0, 16, 16, 16, 16
bitref_b3:
	.db	 0, 16,  0, 16, 16, 32, 16, 32, 16, 32, 16, 32, 32, 48, 32, 48
bitref_b4:
	.db	 0, 16,  0, 16, 16, 32, 16, 32,  0, 16,  0, 16, 16, 32, 16, 32
bitref_b:
	.db	0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 2, 0, 2, 2, 2
	.db	0, 0, 0, 2, 0, 2, 2, 2, 0, 2, 2, 2, 2, 0, 2, 0
	.db	0, 2, 2, 2, 2, 0, 2, 0, 2, 0, 2, 0, 0, 0, 0, 0
	.db	2, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

bitref_c1:
	.db	 0,  0, 16, 16,  0,  0, 16, 16, 16, 16, 32, 32, 16, 16, 32, 32
bitref_c2:
	.db	 0, 16, 16, 32,  0, 16, 16, 32, 16, 32, 32, 48, 16, 32, 32, 48
bitref_c3:
	.db	 0,  0, 16, 16,  0,  0, 16, 16,  0,  0, 16, 16,  0,  0, 16, 16
bitref_c4:
	.db	 0, 16, 16, 32,  0, 16, 16, 32,  0, 16, 16, 32,  0, 16, 16, 32
bitref_c:
	.db	0, 0, 0, 0, 0, 0, 0, 4, 0, 0, 0, 4, 0, 4, 4, 4
	.db	0, 0, 0, 4, 0, 4, 4, 4, 0, 4, 4, 0, 4, 4, 4, 0
	.db	0, 4, 4, 0, 4, 4, 4, 0, 4, 0, 0, 0, 4, 0, 0, 0
	.db	4, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0

bitref_d1:
	.db	 0, 16, 16, 32, 16, 32, 32, 48,  0, 16, 16, 32, 16, 32, 32, 48
bitref_d2:
	.db	 0, 16,  0, 16, 16, 32, 16, 32,  0, 16,  0, 16, 16, 32, 16, 32
bitref_d3:
	.db	 0, 16, 16, 32,  0, 16, 16, 32,  0, 16, 16, 32,  0, 16, 16, 32
bitref_d4:
	.db	 0, 16,  0, 16,  0, 16,  0, 16,  0, 16,  0, 16,  0, 16,  0, 16
bitref_d:
	.db	0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 8, 0, 8, 8, 8
	.db	0, 0, 0, 8, 0, 8, 8, 0, 0, 8, 8, 8, 8, 8, 8, 0
	.db	0, 8, 8, 0, 8, 0, 0, 0, 8, 8, 8, 0, 8, 0, 0, 0
	.db	8, 0, 0, 0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
	.db	0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0