PIIX_IDETIM
pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM)),
idetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM,
oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);
oidetim = pci_conf_read(sc->sc_pc, sc->sc_tag, PIIX_IDETIM);
pci_conf_write(sc->sc_pc, sc->sc_tag, PIIX_IDETIM, idetim);