Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!ut-emx!walt.cc.utexas.edu!greg
From: greg@walt.cc.utexas.edu (Greg Harp)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Some questions
Keywords: OS 2.0
Message-ID: <34898@ut-emx.UUCP>
Date: 1 Aug 90 17:04:52 GMT
References: <428@spader.UUCP> <139323@sun.Eng.Sun.COM> <1705@nyx.UUCP> <10578@crdgw1.crd.ge.com>
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Reply-To: greg@walt.cc.utexas.edu (Greg Harp)
Organization: The University of Texas at Austin, Austin, Texas
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In article <10578@crdgw1.crd.ge.com> perley@galaxy (Donald P Perley) writes:
>This is just speculation, but the big difference between an unexpanded
>500 and a 2000 is that the 2000 has a full megabyte of memory, while
>the 500 doesn't.  My guess is that the 2000 release will work
>on a 1 MB 500, but not (or not too well) on a 1/2 meg one.

That's about a 50% reliable way of telling, I guess.  They could also detect
1MB chip ram, which would be about 90% reliable.  Of course, that would also
tag early 2000s.

Anyway, the comment I made about detecting which machine 2.0 was running in
was more tongue-in-cheek than anything else.  If CBM _wanted_ to only upgrade
the 2000 and no the 500, they could merely print "2000 Upgrade" on the box,
and then only the informed people would buy it for their 500.

I believe it was Randall Jesup (sp?) that said there was at least one pin
difference that would require a different version of one chip, or at least
a kluged socket to go between the original socket and the chip.  

I assume that (being from CBM -- although not an official rep (ie. We can't
hold him to it. :-) ) he is correct.  If the difference is significant 
enough to require different pinouts on one chip, I would opt for a different
version of the chip, since an extra socket could possibly interfere with
an accelerator/memory/other board that is fitted inside a 500.

>-don perley
>perley@trub.crd.ge.com

I'm glad that this subject is finally getting some civil, useful responses.

greg...

        _ _  Disclaimer:  "What I _really_ meant was..."
AMIGA! //// 
      ////   "Run to the bedroom, in the suitcase on the left you'll find my
_ _  //// favorite axe." --Roger Waters, Pink Floyd's The Wall, One of My Turns
\\\\////        
 \\XX//           Greg Harp                greg@ccwf.cc.utexas.edu