Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!samsung!usc!apple!apple.com!esmith
From: esmith@apple.com (Eric Smith)
Newsgroups: sci.electronics
Subject: Re: MC68000 help needed
Message-ID: <9163@goofy.Apple.COM>
Date: 16 Jul 90 21:44:20 GMT
References: <1990Jul13.153003.13647@watcsc.waterloo.edu>
Sender: usenet@Apple.COM
Organization: Amalgamated Conglomerates
Lines: 34

In article <1990Jul13.153003.13647@watcsc.waterloo.edu> 
adf@watcsc.waterloo.edu (Andrew D. Fernandes) writes:
> I have a slight problem which I hope someone can help me with.  The 
computer
> science club here at Waterloo has a couple of HP9000 series computers 
with
> what we think are 68000 processors.  The only trouble is, when we open 
them
> up, the only thing that can be found that even vaugely resembles a 
> microprocessor is a 10x10 PGA (number of centre pins removed: unknown) 
labeled
> as follows:
> 
> (Motorola logo)
> 1820-3288
> GN78427
> 
> According to all the data books I have looked in, this is either a 
> 68000, 68010, or 68012.  What we think we have is a 68000.  We want 
either
> a 68010 or 68012.  I suppose that a quick software check should be able 
to 
> tell the difference appart between the 10 an 00, but not the 10 and 12.
> Besides... we'd like to know exactly what we have.

A 68012 comes in an 84 pin PGA (more pins for the added address lines
and the RMC line).

Also, I believe the GN7 mask code is for a 68000.

----
Eric Smith    esmith@apple.com
Opinions expressed herein are not necessarily those of my
employer, family, friends, computer, or even me!  :-)