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From: SYSTEM@V1.ESP.SOTON.AC.UK
Newsgroups: comp.os.vms
Subject: Re: lines 0 and 1 on a dmf32
Message-ID: <8710211425.AA04185@ucbvax.Berkeley.EDU>
Date: Wed, 21-Oct-87 10:27:14 EDT
Article-I.D.: ucbvax.8710211425.AA04185
Posted: Wed Oct 21 10:27:14 1987
Date-Received: Fri, 23-Oct-87 07:24:37 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
Reply-To: system%uk.ac.soton.esp.v1@UK.AC
Organization: The ARPA Internet
Lines: 25

Anthony A. Datri writes:

> We've got two dmf32's on a 785 running vms 4.4 or so, and we've been
> having trouble making them work as terminals.  Is there some unobvious
> magic to this?

I too had this problem, when trying to connect a VT220 to our 11/750, via
a DEC cable we had lying around.  Basically, it turns out that lines 0 and 1
respect more of the modem control lines etc. than the others (have a close
look at the sockets - they actually have more pins than the others!).  Most
of the cables we use to connect terminals to serial lines are made by us, and
have 9 wires.  However, it turned out that the DEC cable we tried to use had
only 3 wires (hard to check, as it had moulded plugs), and so was not able to
satisfy ports 0 or 1.  Hope this helps,
   Ian

+-----------------------------------------------------------------------------+
|  Ian Glendinning                 JANET:  ian@UK.AC.soton.esp.v1             |
|                                  BITNET: ian%UK.AC.soton.esp.v1@AC.UK       |
|  Concurrent Computation Group    ARPA:   ian%UK.AC.soton.esp.v1@ucl-cs.ARPA |
|  Dept of Electronics & Comp.Sci  UUCP:   ...!mcvax!sot-cm!igl               |
|  University of Southampton       Other:  ian@v1.esp.soton.AC.UK             |
|  SOUTHAMPTON SO9 5NH                                                        |
|  United Kingdom                  Phone:  +44 703 559122 extn 3368           |
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