IXPDOG_COUNTS_PER_SEC
sc->sc_preset = IXPDOG_COUNTS_PER_SEC * hz * IXPDOG_DEFAULT_PERIOD;
sc->sc_preset = IXPDOG_COUNTS_PER_SEC * hz * smw->smw_period;
if (sc->sc_preset < (IXPDOG_COUNTS_PER_SEC * hz) ||