/* bit definitions */
#define B0  (0x000000001)
#define B1  (0x000000002)
#define B2  (0x000000004)
#define B3  (0x000000008)
#define B4  (0x000000010)
#define B5  (0x000000020)
#define B6  (0x000000040)
#define B7  (0x000000080)
#define B8  (0x000000100)
#define B9  (0x000000200)
#define B10 (0x000000400)
#define B11 (0x000000800)
#define B12 (0x000001000)
#define B13 (0x000002000)
#define B14 (0x000004000)
#define B15 (0x000008000)
#define B16 (0x000010000)
#define B17 (0x000020000)
#define B18 (0x000040000)
#define B19 (0x000080000)
#define B20 (0x000100000)
#define B21 (0x000200000)
#define B22 (0x000400000)
#define B23 (0x000800000)
#define B24 (0x001000000)
#define B25 (0x002000000)
#define B26 (0x004000000)
#define B27 (0x008000000)
#define B28 (0x010000000)
#define B29 (0x020000000)
#define B30 (0x040000000)
#define B31 (0x080000000)