ADDR_HIGH
bus_space_write_2(iot, ioh2, GUS_DATA_LOW, ADDR_HIGH(start));
bus_space_write_2(iot, ioh2, GUS_DATA_LOW, ADDR_HIGH(current));
bus_space_write_2(iot, ioh2, GUS_DATA_LOW, ADDR_HIGH(end));
bus_space_write_2(iot, ioh2, GUS_DATA_LOW, ADDR_HIGH(addr));
bus_space_write_2(iot, ioh2, GUS_DATA_LOW, ADDR_HIGH(addr));