SER_RTS
return ((control & SER_RTS) ? TIOCM_RTS : 0)
info->MCR |= SER_RTS;
info->MCR &= ~SER_RTS;
info->MCR &= ~(SER_DTR|SER_RTS);
info->MCR |= SER_RTS;
ciab.pra = ((bits & (SER_RTS | SER_DTR)) ^ (SER_RTS | SER_DTR)) | (ciab.pra & ~(SER_RTS | SER_DTR));
if(!(control & SER_RTS))
info->MCR |= SER_DTR|SER_RTS;
info->MCR &= ~(SER_DTR|SER_RTS);
ciab.ddra |= (SER_DTR | SER_RTS); /* outputs */
info->MCR = SER_DTR | SER_RTS;
info->MCR &= ~(SER_DTR|SER_RTS);
info->MCR &= ~SER_RTS;
info->MCR |= SER_RTS;