CHIP_REV_VAL
#define CHIP_REV_IS_SLOW(bp) (CHIP_REV_VAL(bp) > 0x00005000)
!(CHIP_REV_VAL(bp) & 0x00001000))
(CHIP_REV_VAL(bp) & 0x00001000))
#define CHIP_REV_SIM(bp) (((CHIP_REV_MASK - CHIP_REV_VAL(bp)) >>\
CHIP_REV_VAL(bp))