THC_MISC_VIDEN
confreg |= THC_MISC_VIDEN;
reg |= THC_MISC_VIDEN;
reg |= THC_MISC_VIDEN;
reg &= ~THC_MISC_VIDEN;
sc->sc_thc->thc_misc |= THC_MISC_VIDEN;
sc->sc_thc->thc_misc &= ~THC_MISC_VIDEN;
sc->sc_thc->thc_misc |= THC_MISC_VIDEN;