HAVEBUS
if(lpt->sc_state & HAVEBUS) {
lpt->sc_state &= ~HAVEBUS;
lpt->sc_state |= HAVEBUS;
if(lpt->sc_state & HAVEBUS) {
lpt->sc_state &= ~HAVEBUS;
if(!(sc->sc_state & HAVEBUS)) {
if(!(sc->sc_state & HAVEBUS)) {
if(!(sc->sc_state & HAVEBUS)) {