BANK_SELECT_REG_W
BANK_SELECT_REG_W, (x))
tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 0);
tmp = bus_space_read_2(iot, ioh, BANK_SELECT_REG_W);
bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 1);
bus_space_write_2(iot, ioh, BANK_SELECT_REG_W, 3);