home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
kermit.columbia.edu
/
kermit.columbia.edu.tar
/
kermit.columbia.edu
/
newsgroups
/
misc.19970929-19971216
/
000300_news@newsmaster….columbia.edu _Thu Nov 20 13:01:04 1997.msg
< prev
next >
Wrap
Internet Message Format
|
1997-12-15
|
2KB
Return-Path: <news@newsmaster.cc.columbia.edu>
Received: from newsmaster.cc.columbia.edu (newsmaster.cc.columbia.edu [128.59.35.30])
by watsun.cc.columbia.edu (8.8.5/8.8.5) with ESMTP id NAA01856
for <kermit.misc@watsun.cc.columbia.edu>; Thu, 20 Nov 1997 13:01:04 -0500 (EST)
Received: (from news@localhost)
by newsmaster.cc.columbia.edu (8.8.5/8.8.5) id NAA18006
for kermit.misc@watsun; Thu, 20 Nov 1997 13:01:03 -0500 (EST)
Newsgroups: comp.protocols.kermit.misc
Path: news.columbia.edu!panix!cam-news-hub1.bbnplanet.com!cpk-news-hub1.bbnplanet.com!news.bbnplanet.com!ix.netcom.com!jhurwit
From: jhurwit@netcom.com (Jeffrey Hurwit)
Subject: One-way null-modem cable?
Message-ID: <Y3Fd0w8Z727Q092yn@netcom.com>
Sender: jhurwit@netcom9.netcom.com
Organization: Organization? What organization?
Date: Thu, 20 Nov 1997 15:57:12 GMT
Lines: 28
Xref: news.columbia.edu comp.protocols.kermit.misc:8086
Following up on my last question about 16650 UARTs: Ok, so I got the
null-modem cable (DB25 to DB9) to connect between a desktop and notebook
(both running Windows 95 OSR2), put each in DOS mode, started MSK314 on
each, and set the comm parameters so that they could talk to each other
(at 115200 bps, to start). I put both in terminal (connect) mode, just
to test the connection-- characters typed on one machine should appear
on the other's terminal screen, right?
Wrong. Characters typed on the desktop machine appeared on the
notebook's screen, but not visa versa. A test file transfer showed the
same results: The notebook received the init packets from the desktop,
but the desktop didn't receive ACKs/NAKs from the notebook. I tried
slower speeds, xon/xoff (instead of rts/cts), and half duplex. Nothing
worked. 'Show comm' always indicated that the RTS, CTS, and CD signals
were on, on both machines (suggesting that the cable was connected and
functioning correctly?) I checked the serial ports on each machine with
Norton diagnostics (part of Norton Utilities for Win 95-- runs in DOS
mode) as far as I could (I don't have loop-back plugs), and both checked
out ok.
Suggestions?
Frank and Joe: Thanks again for your continued help and support.
Jeff
--
jhurwit@netcom.com Jeffrey Hurwit
"NETCOM: It's not just an ISP, it's a way of life."