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From: bilbo@pnet02.cts.com (Bill Daggett)
Newsgroups: comp.sys.amiga
Subject: PAL Chip Mod Questions
Message-ID: <2282@gryphon.CTS.COM>
Date: Fri, 13-Nov-87 21:31:23 EST
Article-I.D.: gryphon.2282
Posted: Fri Nov 13 21:31:23 1987
Date-Received: Sun, 15-Nov-87 16:42:16 EST
Sender: root@gryphon.CTS.COM
Organization: People-Net [pnet02], Redondo Beach, CA
Lines: 26

Can we work this out?  There seems to be disagreement among the "hacker"
Commodore ranks.

I believe I have been experiencing gurus resulting from a PAL chip problem.  I
replaced the two affected PALs with their faster "better" variety when I
installed Kickstart in ROM.  After that I continued to experience gurus -
though I was running Word Imperfect at least some of the time.  There are two
methods now developed to "ground" pin 10 of the PAL chips:
 
1. "Hacker" method:  Ground all pin 10s to the daughterboard capacitor and
then down to the motherboard.
2. Commodore:  You don't really need to because the PALs are already grounded
in the fashion they were designed to be grounded BUT if you really want to
jumper between U6J and U6K; and a second jumper between U6L and U6N.

I'd really like to KNOW what the heck is going on here.  I think there is
still some mystery going on here that has been untold.  But I really don't
want to experiment if facts can prove one method correct.  Can anyone help?

 Bill  Daggett -- a.k.a.
*Bilbo Baggins*  Recombinant Hobbit
* Sometimes The Dragon Wins! *

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