--- /dev/null
+#define b0000 0
+#define b0001 1
+#define b0010 2
+#define b0011 3
+#define b0100 4
+#define b0101 5
+#define b0110 6
+#define b0111 7
+#define b1000 8
+#define b1001 9
+#define b1010 10
+#define b1011 11
+#define b1100 12
+#define b1101 13
+#define b1110 14
+#define b1111 15
+
+#define b00000000 0x00
+#define b00000001 0x01
+#define b00000010 0x02
+#define b00000011 0x03
+#define b00000100 0x04
+#define b00000111 0x07
+#define b00001000 0x08
+#define b00001111 0x0f
+#define b00010000 0x10
+#define b00011111 0x1f
+#define b00100000 0x20
+#define b00111111 0x3f
+#define b01000000 0x40
+#define b01111111 0x7f
+#define b10000000 0x80
+#define b10111111 0xbf
+#define b11000000 0xc0
+#define b11011111 0xdf
+#define b11100000 0xe0
+#define b11101111 0xef
+#define b11110000 0xf0
+#define b11110111 0xf7
+#define b11111000 0xf8
+#define b11111011 0xfb
+#define b11111100 0xfc
+#define b11111101 0xfd
+#define b11111110 0xfe
+#define b11111111 0xff