STI_ROM_ENABLED
if (!ISSET(sc->sc_flags, STI_ROM_ENABLED)) {
SET(sc->sc_flags, STI_ROM_ENABLED);
if (ISSET(sc->sc_flags, STI_ROM_ENABLED)) {
CLR(sc->sc_flags, STI_ROM_ENABLED);
int enabled = sc->sc_flags & STI_ROM_ENABLED;
sc->sc_flags |= STI_ROM_ENABLED;