ASC_IOP_REG_IH   1297 dev/ic/advlib.h #define ASC_READ_CHIP_IH(iot, ioh)				bus_space_read_2((iot), (ioh), ASC_IOP_REG_IH)
ASC_IOP_REG_IH   1298 dev/ic/advlib.h #define ASC_WRITE_CHIP_IH(iot, ioh, data)			bus_space_write_2((iot), (ioh), ASC_IOP_REG_IH, data)