On Nov 30, 3:25 pm, jack <j.jack.w...@gmail.com> wrote: > I tried the serial port on my B&B serial board and the 1PPS signal is > not detected. I don't how how serialpps.sys sees the signal and am > thinking the DCD signal is not sent over the PCI bus.
serialpps.sys is a very lightly modified serial.sys. DCD transitions trigger an interrupt and the driver looks at the "modem status register" bits from the UART to determine whether DCD is asserted or not. I doubt there's a custom driver involved, so serialpps.sys hijacking serial.sys's role should be handling it. I suppose it's possible the card doesn't wire the DCD pin through to the UART but I hope that's unlikely. Cheers, Dave Hart _______________________________________________ questions mailing list questions@lists.ntp.org https://lists.ntp.org/mailman/listinfo/questions
