cfpleong@watrose.UUCP (Peter) (07/30/84)
Does anybody knows how to interface the Mac to Vax 11/780 (Unix 4.2BSD) without the use of a modem? Can I just connect the RS-232C from the Vax 11/780 to the Mac?
ward@hao.UUCP (Mike Ward) (08/06/84)
[]
You can connect the RS-232 port directly to the serial port of the Mac.
Of course you'll need a special cable (as if there were such a thing as
a standard RS-232 cable). Use the pinouts found in macTEP, but swap
pins 2 & 3 on the DB-25 side. You might also have to connect pin 2 (+5v)
on the DB-9 to pin 6 (Data Set Ready) on the DB-25. As in all cases when
connecting two devices for the first time, be prepared to experiment.
--
Michael Ward, NCAR/SCD
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BELL: 303-497-1252
USPS: POB 3000, Boulder, CO 80307mmt@dciem.UUCP (Martin Taylor) (08/07/84)
****************
You can connect the RS-232 port directly to the serial port of the Mac.
Of course you'll need a special cable (as if there were such a thing as
a standard RS-232 cable). Use the pinouts found in macTEP, but swap
pins 2 & 3 on the DB-25 side. You might also have to connect pin 2 (+5v)
on the DB-9 to pin 6 (Data Set Ready) on the DB-25. As in all cases when
connecting two devices for the first time, be prepared to experiment.
Michael Ward, NCAR/SCD
****************
I haven't found it necessary to alter the pin connections. The same cable
works fine. Maybe it is a question of selecting the right "Communication"
parameters out of the "Settings" menu in MacTerminal. Use "Other Computer"
rather than "Modem".
--
Martin Taylor
{allegra,linus,ihnp4,floyd,ubc-vision}!utzoo!dciem!mmt
{uw-beaver,qucis,watmath}!utcsrgv!dciem!mmt