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000250_news@newsmaster….columbia.edu _Wed Aug 27 13:12:40 1997.msg
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From: geest3+@pitt.edu (Gregg E Economou)
Newsgroups: comp.protocols.kermit.misc,comp.unix.questions,comp.unix.admin,comp.unix.misc,comp.unix.ultrix,comp.unix.shell
Subject: Re: Do not get connected at 33.6K
Date: 27 Aug 1997 17:06:55 GMT
Organization: University of Pittsburgh
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References: <5tsn5b$o9q@newslink.runet.edu> <5tupoe$gra$1@apakabar.cc.columbia.edu> <5u0g7d$f6o@newslink.runet.edu> <5u1fh6$n39$1@apakabar.cc.columbia.edu>
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In article <5u1fh6$n39$1@apakabar.cc.columbia.edu>,
Frank da Cruz <fdc@watsun.cc.columbia.edu> wrote:
>RTS/CTS is the only kind of flow control that really works on a high-speed
>modem connection, but Ultrix does not support it. Therefore you have to use
what version of ultrix are you talking about?
the hardware doesent support it on a DS2100-3100 but afaik ultrix supports
it. Now, depending on the hardware, you dont have support for 38400
baud connections. Also, if this is on a DS5000/xxx then you should check
the 19200-38400 high speed external clock generation setting,
because speeds above 9600 are supported by an external clock supplying
timing to the two "serial" lines going out of the DZ.
(the other two, kb and mouse, are fixed at the proper settings for their
uses) Anwyays, the garbage is probably data at the wrong baud rate,
if you dont see anything at all intelligible. Errors in the flow
control would give you garbled pieces of data, not complete garbled
data. At any rate, try the same connection at 19200 and 9600 because
you might not have the serial line configured properly.
Also, if youre suing a serial console, you cannot apply different external
clocks to the two serial lines ( e.g. one cannto be at 38400 and the
other at 19200) because there is only one external clock generator for the DZ.
(and the pulses are shared by both lines, if the bit is set to turn on the
higher speed external clocks)
To change the settings, fire the machine up and type help at the chevron.
Its one of the environment variables avaiable from there. (not owning
a '5000 myself, i dont rmember what the exact name is. On the 3100-2100
it is bauda but its probly different on the 5000's)
isildur