ASC_IOP_REG_ID   1315 dev/ic/advlib.h #define ASC_READ_CHIP_DVC_ID(iot, ioh)				bus_space_read_1((iot), (ioh), ASC_IOP_REG_ID)
ASC_IOP_REG_ID   1316 dev/ic/advlib.h #define ASC_WRITE_CHIP_DVC_ID(iot, ioh, data)			bus_space_write_1((iot), (ioh), ASC_IOP_REG_ID, data)