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000177_news@watsun.cc.columbia.edu _Fri Jan 29 19:48:49 1999.msg
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From: fdc@watsun.cc.columbia.edu (Frank da Cruz)
Subject: Re: More questions on Data Acquisition / RS-232
Date: 30 Jan 1999 00:22:44 GMT
Organization: Columbia University
Message-ID: <78tjck$4bi$1@newsmaster.cc.columbia.edu>
To: kermit.misc@mailrelay2.cc.columbia.edu
In article <36B24F12.A1CEC3EF@uh.edu>, Jagan Annamalai <jagan@uh.edu> wrote:
:
:
: Frank da Cruz wrote:
: > If the device's DB-25 connector is a parallel interface and not a serial
: > one, then you're out of luck. You can't plug it into the PC's serial
: > interface, but MS-DOS Kermit does not support the parallel port as a
: > communications device. Parallel and serial interfaces are entirely
: > different; no amount of rewiring can make one communicate with the other.
: >
: > Have you ever seen the output from this device under any circumstances?
:
: There was another student here who had used Kermit to access data from the
: same device. So I know that it did work before. I remember him saying that
: he used the printer port on the computer. Are the different versions of
: kermit different? Could the older versions use the parallel port? I am
: indeed trying to get in touch with him. Don't know how long that's gonna
: take though.
:
MS-DOS Kermit does not contain any code to let it read from a printer port.
In fact, up until a few years ago, most parallel ports were output-only.
The hardware interface contained only the logic to send data, not to receive
it. Still, we don't know for sure it *is* a parallel port. If the
documentation says anything like "EIA", "RS-232", or "V.24", then it's a
serial port, and we're back the original problem of finding the right
communication settings and wiring.
Please follow up by email to kermit-support@columbia.edu, as I think at this
point we are straining the interest of the general public.
- Frank