MBG_FREERUN
if (tframe.status & MBG_FREERUN) {
sc->sc_signal.status = status & MBG_FREERUN ?
if (!(status & MBG_FREERUN)) {
if (tframe.status & MBG_FREERUN) {
!(letoh16(tframe.status) & MBG_FREERUN)) {
sc->sc_signal.status = letoh16(tframe.status) & MBG_FREERUN ?