tlug: REPOST: IPC Serial Pinouts

[gaijin@example.com (John Little)]

Folks,

   Here are the pinouts for the serial ports on the IPC. Note that
   *synchronous* comms will only work on port A, but A & B are both
   fully functional in asynchronous mode.

                o        o        o
                8        7        6                1 - DTR
                                                   2 - CTS
                                                   3 - TD
        o                o        o                4 - GND
        5                4        3                5 - RD
                                                   6 - RTS
                                                   7 - DCD
                                                   8 - RC
                o        o
                2        1

   Note that if there is no keyboard plugged in, the system will
   automatically use port-A as the console device, with power-on
   selftest messages being re-directed there even before the OS
   comes up. It defaults to 9600, no-parity, 8-bits, 1-stop.

			-John-

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