DML_DTR
if (qvauxmctl(sc, line, DML_DTR, DMBIS) & DML_DCD)
(void) qvauxmctl(sc, line, DML_DTR, DMBIS);
(void) qvauxmctl(sc, line, DML_DTR, DMBIC);
mbits |= DML_DTR;
if (mbits & DML_DTR) {
qvauxmctl(sc, i, DML_DTR, DMSET);
if (dzmctl(sc, line, DML_DTR, DMBIS) & DML_DCD)
(void) dzmctl(sc, line, DML_DTR, DMBIS);
(void) dzmctl(sc, line, DML_DTR, DMBIC);
mbits |= DML_DTR;
if (mbits & DML_DTR) {
dzmctl(sc, i, DML_DTR, DMSET);
if (dhumctl(sc, line, DML_DTR|DML_RTS, DMBIS) & DML_DCD)
(void) dhumctl(sc, line, DML_DTR|DML_RTS, DMBIS);
(void) dhumctl(sc, line, DML_DTR|DML_RTS, DMBIC);
mbits |= DML_DTR;
if (mbits & DML_DTR)