DCDIE
new_reg = up->curregs[R15] | (DCDIE | SYNCIE | CTSIE);
uap->curregs[R15] |= DCDIE | SYNCIE | CTSIE;
uap->curregs[R15] &= ~(DCDIE | SYNCIE | CTSIE);
new_reg = uap->curregs[R15] | (DCDIE | SYNCIE | CTSIE);
new_reg = up->curregs[R15] | (DCDIE | SYNCIE | CTSIE);
((mask_b & DCDIE) ? TIOCM_CAR : 0) |
((mask_a & DCDIE) ? TIOCM_RNG : 0) |
zport_a->regs[15] &= ~(DCDIE | SYNCIE);
zport->regs[15] &= ~(DCDIE | CTSIE);
if (!(zport->regs[15] & (DCDIE | SYNCIE)))
zport_a->regs[15] |= DCDIE | SYNCIE;
zport->regs[15] |= DCDIE | CTSIE;
zport->regs[15] |= DCDIE;
zport->regs[15] &= ~DCDIE;