ZX_BLANKED
*(int *)data = ((sc->sc_flags & ZX_BLANKED) != 0);
if ((sc->sc_flags & ZX_BLANKED) != 0)
sc->sc_flags |= ZX_BLANKED;
if ((sc->sc_flags & ZX_BLANKED) == 0)
sc->sc_flags &= ~ZX_BLANKED;