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From: kent@swrinde.nde.swri.edu (Kent D. Polk)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: AT bus in 2000 and 3000
Message-ID: <2834@swrinde.nde.swri.edu>
Date: 11 May 91 21:26:53 GMT
References: <21393@cbmvax.commodore.com> <42181@cup.portal.com> <1991May10.213512.16629@lynx.CS.ORST.EDU>
Sender: news@swrinde.nde.swri.edu
Organization: Southwest Research Institute, San Antonio, Texas
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In article <1991May10.213512.16629@lynx.CS.ORST.EDU> brindley@ECE.ORST.EDU (Mike Brindley) writes:
>In article <42181@cup.portal.com> FelineGrace@cup.portal.com (Dana B Bourgeois) writes:
>>
>>One of the CBM Pet machines had more than one CPU in it.  I think it was 
>>the 2000 model but that one had a 6502 and a Z80 like the C128 so it may
>>not qualify.  Is it the earliest CBM machine to have multi-processors in
>>it?

Actually, I think the 4040 disk drive was the earliest CBM machine to
have multi-processors in it. Two 6502's - one for each drive.

>   In a summer job a couple of years ago, I had to modify some
>programs on a machine labelled "SuperPET".  It had a switch on
>the side which allowed you to switch between a 6502 running
>BASIC and a 6809 running a varity of things which had to be 

The 6809 mode stuff was from Waterloo if I remember correctly.  The
SuperPET was the hottest micro of it's day. I wrote lots of software
for the 8032's & SuperPETs, but didn't get a chance to work much with
the 6809 mode and don't really remember anything about it.

>loaded off of disk.  The floppy disk stored 512K on a 5.25
>inch floppy drive using double density disks!

Also, the 8052 (8250? whatever) was a dual drive which stored 1Meg on a
single double-sided, double-density floppy. 2 Meg. total.
Unfortunately, it was a flat file system, so this cut down a bit on
it's usability.

Kent Polk: Southwest Research Institute
Internet : kent@swrinde.nde.swri.edu
UUCP     : $ {cs.utexas.edu, gatech!petro, sun!texsun}!swrinde!kent