ICH_D0
*byte = bus_read_1(sc->io_res, ICH_D0);
bus_write_1(sc->io_res, ICH_D0, byte);
bus_write_1(sc->io_res, ICH_D0, word & 0xff);
*byte = bus_read_1(sc->io_res, ICH_D0);
ICH_D0) & 0xff)
bus_write_1(sc->io_res, ICH_D0, sdata & 0xff);
ICH_D0) & 0xff)
bus_write_1(sc->io_res, ICH_D0, count);
bus_write_1(sc->io_res, ICH_D0, *count); /* XXX? */
sc->io_res, ICH_D0);