From owner-freebsd-bugs  Tue Jun  2 05:50:34 1998
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Date: Tue, 2 Jun 1998 05:50:01 -0700 (PDT)
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To: freebsd-bugs@FreeBSD.ORG
From: Stacy Millions <stacy@Millions.CA>
Subject: Re: kern/6800
Reply-To: Stacy Millions <stacy@Millions.CA>
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The following reply was made to PR kern/6800; it has been noted by GNATS.

From: Stacy Millions <stacy@Millions.CA>
To: Poul-Henning Kamp <phk@FreeBSD.ORG>
Cc: freebsd-gnats-submit@FreeBSD.ORG
Subject: Re: kern/6800
Date: Tue, 02 Jun 1998 08:45:50 -0400

 Poul-Henning Kamp wrote:
 > 
 > Synopsis: Cyclom 8yo problem
 > 
 > State-Changed-From-To: open-feedback
 > State-Changed-By: phk
 > State-Changed-When: Tue Jun 2 04:15:05 PDT 1998
 > State-Changed-Why:
 > Can you talk with the same cable to another device/port/something ?
 > It is important that you be systematic in isolating the troubled
 > part.
 
 I did that. I used my NT box for the standard. From the NT, I was able to
 communicate with the com1 port of the FreeBSD, but not any of the cyclom
 ports.
 
 >       Cabeling is suspect #1.
 
 Nope. I have a good breakout box and a set of trusted cables that I use for
 testing.
 
 >                               Look out for ground-loops which can
 > induce serious amounts of noise.
 
 My multimeter shows a potential of 1.1 mV between the signal grounds of the
 two boxes.
 
 I looked on the Cyclades support web page and found a driver for FreeBSD
 2.2.6 that was different from the one in my source directory. I installed
 it and every thing is fine now.
 
 cy.c:
      $Id: cy.c,v 1.41.3.1 1998/05/01 18:23:46 ivan Exp $
 
 cy.c.orig:
      $Id: cy.c,v 1.41.2.3 1998/03/18 21:05:19 dg Exp $
 
 Thanks for the help.
 
 -stacy

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