Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!rutgers!bellcore!tness7!ninja!doug
From: doug@ninja.UUCP (Doug Davis)
Newsgroups: comp.sys.tandy
Subject: Re: wanted: info on 6000 modem adapter
Summary: NO A NULL MODEM WILL NOT WORK!!!
Keywords: null modem adaptor
Message-ID: <13355@ninja.UUCP>
Date: 6 Sep 88 04:31:04 GMT
References: <7842@petro.UUCP> <12349@ncoast.UUCP>
Reply-To: doug@ninja.UUCP (Doug Davis)
Organization: Lawnet, borrowing an account from, db Systems, Fort Worth, Texas
Lines: 27

In article <12349@ncoast.UUCP> mikes@ncoast.UUCP (Mike Squires) writes:
>The 3-port card is a DCE device, unlike the tty01/02 ports that are DTE.
>A standard null modem should work. 
*********************** NO IT WON'T ******************************

The 3 port card is not a true DCE device, First of all the CD line is tied
second of all so is the DTR line.  The modem adaptor makes use of DSR and 
on other line to work the modems hand shake signals, a standard NULL modem
JUST WILL NOT CUT IT. WHEN USING A 3 PORT CARD AND A MODEM USE THE MODEM
ADAPTOR, THATS WHAT IT WAS MADE FOR.  Believe ME, I KNOW, I WAS THERE!

If you really want to know send mail and I will blow the dust off of my
3 port board schmatics and tell you which lines..


___
 Sign seen on a local parts wearhouse....
 "BEWARE: Our guard dog has AIDS!"

Now I wonder, Who gave it to him?
---
doug davis                                        \ | /
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