Path: utzoo!attcan!uunet!portal!cup.portal.com!Doug_B_Erdely
From: Doug_B_Erdely@cup.portal.com
Newsgroups: comp.sys.amiga
Subject: Re: Clarify Perry's AC "PAL Help" article
Message-ID: <7201@cup.portal.com>
Date: 8 Jul 88 05:24:39 GMT
References: <1666@vu-vlsi.Villanova.EDU>
Distribution: na
Organization: The Portal System (TM)
Lines: 24
XPortal-User-Id: 1.1001.2946

David,
I have a 30 Meg Supra drive that would get random read write errors..
I talked to someone here on the net who was VERY nice about helping me out
with the problem of HOW to ground the PAL Chips. !
I did as he had done... but I was STILL having trouble... I called Supra
and they told me a COMPLETLY different method to use... AND IT WORKED!!!!
This is what they told me....

1. Connect pin 10 (upper left pin when your looking at the daughter board
while it is STILL in the Amiga> of all 4 PAL chips together...
2. then from your four chips with their pin 10's all connected together, go
to the Electrolytic capacitor  about an inch or so away
from the PAL's....
3. From the Capacitor, go down to the mother board and connect to ground!
I found a nice ground pad right by the power connector from the power supply,
and soldered the wire right to the pad... Since I did this about 2 days ago
I have not had ONE read/write error or ANY bit of strangeness from the
hard drive. Including being told that a known program is not an object
module... All of this has gone away since I did the above mentioned
modification!

          - Doug -

 Doug_B_Erdely@Portal.Cup.Com