Path: utzoo!attcan!uunet!cs.utexas.edu!texbell!swpyr2!ammrk
From: ammrk@swpyr2.sbc.com (Mike R. Kraml)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Motherboard revision differences
Message-ID: <6@swpyr2.sbc.com>
Date: 2 Jul 90 18:13:10 GMT
References: <4060@uqcspe.cs.uq.oz.au> <12955@cbmvax.commodore.com> <[2688b902:593.2]comp.sys.amiga.hardware;1@wcbcs> <8439@uhccux.uhcc.Hawaii.Edu>
Reply-To: ammrk@swbatl.UUCP (Mike R. Kraml)
Organization: Southwestern Bell Tele. Co. - Advanced Technology Lab - St. Louis
Lines: 42

In article <8439@uhccux.uhcc.Hawaii.Edu> olson@donald.uhcc.Hawaii.Edu (Todd Olson) writes:
>In article <[2688b902:593.2]comp.sys.amiga.hardware;1@wcbcs> akcs.clemon@wcbcs (Craig Lemon) writes:
>>   I'm also interested in the question and answer previously stated.  I have
>>heard of the 2620 and 2630 not working on some 4.x motherboards due to some
>>sort of bus capacitors or some such thing.  I'm particularly interested in
>>4.2.  If the only difference is SUPPOSED to be the capacity of each DRAM,
>>why do the _Commodore Built_ accelerators fail to function (as I said, this
>>is what I've been told)?
>
>	My 4.3 with a 1-meg Agnus works with my 2630..sorta.
>Upon guru the screen will go blank, no guru message, just a blank screen,
>when I then three finger salute, I  get the guru, then one more three
>finger salute to get back to working order.  This is a slight pain at
>times, but I can live with it unless there is a quick easy fix.
>
>	So does anybody have any suggestions?
>						Todd
--> Nope: Sorry Todd, I have the same problem with my 4.2 rev motherboard.  
I have just lived with it for the last couple years or so.  Oh, by the way, 
mine does it with or without the 2630 or the super fat Agnus installed.  
    However, I would like to comment on the 2630 & 4.2.  I did have a strange
reboot problem. If I rebooted from the 2-button mouse screen, I would loose 
all my expansion cards.  The fix was to remove C909 over by the 8520s on the
mother board, (evidently it was causing noisy resets, preventing autoconfig
devices from autoconfiging), that did the trick.  All is fine now, except 
for the double 3-key from a guru to reboot syndrome.  

P.S. Thanks Dave Haynie for the info on C909, I was getting pretty desperate.

>
>--
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
>   olson@uhccux.uhcc.hawaii.edu     |   "Life SUCKS, but death doesn't    
>   olson@uhunix.uhcc.hawaii.edu     |   put out at all."                  
>=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

   Good luck guys, Mike...

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  Mike Kraml - Manager-Separations MECHANIZATION - SWBT - (The Techies)
  UUCP: {uunet, bellcore, texbell}...!swbatl.sbc.com!ammrk   
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