Conference hydra::amiga_v1

3238.0. "Maybe I already have a Fat Agnus!!!" by SHARE::DOYLE () Tue Dec 19 1989 12:41

	The following was extracted from "Comp.sys.Amiga", can anybody
    shed more light on this? My own serial # is CA 1060000....
    	Think I'll open it up tonight and check the chip part #..
    
    
            <<< FRSOLD::IS$NOTES:[NOTES$LIBRARY]AMIGA_SYS.NOTE;2 >>>
                         -< comp.sys.amiga - postings >-
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Note 4186.1               A500 1M AGNUS, SIDECAR specs.                   1 of 1
FRSOLD::ZIMMERMANN "heimat!sneakers"                 53 lines  18-DEC-1989 04:00
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Path: shlump.nac.dec.com!decwrl!wuarchive!uunet!cbmvax!heimat!sneakers
From: sneakers@heimat.UUCP (Dan "Sneakers" Schein)
Newsgroups: comp.sys.amiga
Subject: Re: A500 1M AGNUS, SIDECAR specs.
Message-ID: <10248.AA10248@heimat>
Date: 16 Dec 89 05:23:03 GMT
Followup-To: comp.sys.amiga
Organization: Sneakers Computing
Lines: 43
 
In Message <345@poppy.warwick.ac.uk>, phupp@warwick.ac.uk (S Millington) writes:
 
>     According to a report in "New Computer Express", a UK weekly magazine,
>all A500's with serial numbers of 520,000 and over already have a 1M agnus
>fitted, and room for an extra 512K on the main board. The agnus is limited to
>512K mode due to problems when only 512K is fitted to the computer, ie no
>A501. Granada, Comodore's official service company are supposed to
>undisable the agnus for a small fee. Needless to say they know nothing at all
>about this! Anyone out there know any more - is it a nasty untrue rumour,
>or is Comodore just not telling us what we've bought?
 
  Ive said before.... When CBM ran out of 512K fat Agnus chips, they started
  using the 1Meg fat Agnus chips in the A500. This happened -before- the 1Meg
  Agnus was released. For that reason no markings on the box or cpu were
  used to show the chip change. Also no directions were included for changing
  it from a 512K to 1Meg Agnus.
 
  So your being told the truth about the chip. The best way to check if yours
  has it or not is simply to open the case and look at the chips part number.
  If you have the 1Meg chip and 1Meg (or greater) of ram, the conversion is
  a simple jumper and cut, so don't pay a service center big $$$ for doing it.
 
>    Any recomendations for a book with the sidecar expansion bus specs. I'm
>thinking of adding some more RAM, but I'm not prepared to guess the specs from
>the users guide! Oh how simple and forgiving the BBC B was. Thanks.
 
   Try to find someone who has/had a -GERMAN- 2000. These babys only had 512k
   of ram on the mother board and then had a short card plugged in the cpu
   (co-processor) slot that held another 512k of ram. The wonder of that
   card was that it could hold up to 1Meg and that it alreay had holes in it
   for mounting inside a Sidecar!!! Ive done it and it works great. The
   memory of this card is $C00000.
 
   Sneakers
 
--
                                       ___
     Dan "Sneakers" Schein            ////            BERKS AMIGA BBS
     Sneakers Computing              ////     You've tried the rest,  now try
     2455 McKinley Ave.      ___    ////      the BEST! 80 Megs of 100% AMIGA
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