Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!gem.mps.ohio-state.edu!ginosko!uunet!pdn!boake2!jc3b21!fgd3
From: fgd3@jc3b21.UUCP (Fabbian G. Dufoe)
Newsgroups: comp.sys.amiga.tech
Subject: Re: How to use Alternate Keymap in Program
Keywords: keymap, console device, alternate
Message-ID: <761@jc3b21.UUCP>
Date: 3 Oct 89 07:08:20 GMT
References: <1982.AA1982@americ>
Organization: St. Petersburg Jr. College, FL
Lines: 26


     I posted message <1982.AA1982@americ> from erk@americ.UUCP (Erick
Parsons) on a local BBS.  Brian Heyboer asked me to post the following
reply.  I tried mailing it but that bounced twice.

--Fabbian Dufoe
  350 Ling-A-Mor Terrace South
  St. Petersburg, Florida  33705
  813-823-2350

UUCP: ...uunet!pdn!jc3b21!fgd3
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Looks like a pretty comprehensive list there. 
I noticed one A500 fix isn't listed, though.  It affects 500's that have been
expanded with more than one item, especially if one of those is an internal
memory board or processor accelerator that plugs into the 68000 socket. In
location R103 (to the right of the 68000 on the Rev 5 boards) is a capacitor
between the main CPU clock and ground. The schematic shows it as a 120 ohm
resistor.  Things can get _really_ flaky (guru convention, floppy drive
read-write errors, etc.) when the bus gets loaded down unless this capacitor
is removed.  It is apparently there as a kludge to get the 500 through FCC
certification, it certainly has no place in a good design.  Since it is there
for FCC requirements, the legality of this mod, especially by a dealer, is
questionable. I've seen messages indicating that some cards don't seem to
"play together" very well on the Rev 6 A2000 boards, and I wonder if it is a
similar problem (the symptoms certainly sound similar).