I'm working on a controller board that connects to the PC via the serial port. We'd like to be able to reboot this board from the PC. I have another system at work that seems to accomplish this using the DTR line, e.g. pulses the line for a certain period to trigger a reboot. I would like to find information on what the standard state of the line is (e.g. is it usually logic high or low) and what happens to the line when the PC reboots (e.g. does it de-assert for a period).
Thanks to anyone who can help,
Fred