ASC_IOP_REG_IFC  1279 dev/ic/advlib.h #define ASC_GET_CHIP_IFC(iot, ioh)				bus_space_read_1((iot), (ioh), ASC_IOP_REG_IFC)
ASC_IOP_REG_IFC  1280 dev/ic/advlib.h #define ASC_SET_CHIP_IFC(iot, ioh, data)			bus_space_write_1((iot), (ioh), ASC_IOP_REG_IFC, data)