ABL_IO_HI
bus_space_write_1(sc->sc_bt, sc->sc_bh, ABL_IO_HI, 0x03);
val = bus_space_read_1(sc->sc_bt, sc->sc_bh, ABL_IO_HI);
bus_space_write_1(sc->sc_bt, sc->sc_bh, ABL_IO_HI, 0x04 | (val << 4));