Path: utzoo!attcan!uunet!lll-winken!csd4.milw.wisc.edu!dogie.macc.wisc.edu!uwvax!tank!eecae!cps3xx!usenet
From: usenet@cps3xx.UUCP (Usenet file owner)
Newsgroups: comp.sys.zenith.z100
Subject: Re: Z-100 memory problems
Keywords: parity errors
Message-ID: <3105@cps3xx.UUCP>
Date: 23 May 89 18:45:03 GMT
References: <808@unocss.UUCP>
Reply-To: urban@frith.UUCP (Mark Urban-Lurain)
Organization: Engineering, Michigan State University, E. Lansing
Lines: 18

In article <808@unocss.UUCP> mlewis@unocss.UUCP (Marcus S. Lewis) writes:
>I can't believe I am having these problems!  I just upgraded my old-MB
>Z using the Wideman method to 768K.  This was to free up my UCI board
>for another system, and I went from 704K to 768K in about 3 hours.
>No problem.  When I was using the UCI board, I had very occasional 
>parity/buss errors that shut the system down.  Very annoying, but 

Do you have a UCI Eazy87 8087 kit installed?  I had a similar 
problem when I put one in my 100.  A call to UCI resulted in a 
suggestion to solder a small cap across two terminals of the Eazy87
board.  That cleared it up and all's been fine ever since.  Unfortunately,
I don't remember which terminals and what cap size.  If you need
that info, I can pull the machine apart and look.

Mark Urban-Lurain
Computer Science Department
Michigan State University
urban@cpswh.cps.msu.edu