MCR_DTR
outb(port + com_mcr, MCR_DTR | MCR_RTS);
outb(port + com_mcr, MCR_DTR | MCR_RTS);
COM_WRITE(sc, com_mcr, MCR_IENABLE | MCR_DTR | MCR_RTS);
COM_WRITE(sc, com_mcr, MCR_IENABLE | MCR_DTR | MCR_RTS);
bus_space_write_1(iot, ioh, com_mcr, MCR_DTR | MCR_RTS);
SET(sc->sc_mcr, MCR_DTR | MCR_RTS | MCR_IENABLE);
SET(sc->sc_mcr, MCR_DTR | MCR_RTS);
sc->sc_mcr = MCR_DTR | MCR_RTS;
CLR(sc->sc_mcr, MCR_DTR | MCR_RTS);
SET(sc->sc_mcr, MCR_DTR | MCR_RTS);
SET(m, MCR_DTR);
CLR(sc->sc_mcr, MCR_DTR | MCR_RTS);
if (ISSET(m, MCR_DTR))
CLR(sc->sc_mcr, MCR_DTR);
SET(sc->sc_mcr, MCR_DTR);
if (ISSET(sc->sc_mcr, MCR_DTR)) {
sc->sc_dtr = MCR_DTR | MCR_RTS;
sc->sc_dtr = MCR_DTR;
ls = (sc->sc_dtr ? MCR_DTR : 0) |