#: 11838 S15/Hot Topics
    19-Aug-91  00:42:01
Sb: #11825-#MM1 & unknown pins
Fm: Scott t. Griepentrog 72427,335
To: William Phelps 75100,265 (X)

The pinout of /t0 is as follows:
 1 - CD
 2 - RX
 3 - TX
 4 - DTR
 5 - GND
 6 - n/c
 7 - n/c
 8 - n/c
 9 - n/c

(I hope that's right).  Note that normal PC/AT style DB9->DB25 adapters do have
the correct pinout, but since CTS/RTS are N/C on the MM1 T0 port, some modems
will not want to talk to it.  The solution is to tell the modem to ignore
CTS/RTS handshaking if it can, otherwise get a break out box and tie pins 4-5-6
together (on DB25 to modem that is).

StG

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