Article View: comp.sys.atari.st
Article #40197Re: CO-Processors---MOTOROLA ARE NICE PEOPLE!
From: Dan Karbowsky;AtariEliteOfPghPa ...
Date: Sun, 07 Jan 1990 00:52
Date: Sun, 07 Jan 1990 00:52
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3230 bytes
In article <9001030805.AA24416@ucbvax.Berkeley.EDU>,
so01@dmarum8.BITNET (Thomas Neser) writes:
> Hello netters,
> does anyone know something about the use of coprocessors with PC-emu-
> lators? a) The co-processors in use with the atari 68000er
I was VERY INTERESTED in attempting to tack a mc68881 co-processor onto
my 1040.....I talked to ATARI-US and ATARI-UK: They couldn't tell me
ANYTHING and ATARI-US denied the '881s existance.
In a UK catalog, however ( Silica House ), I do see the co-pro listed as an
ATARI-manufactured item! Although this is most certainly NOT the case--unless
someone isn't telling me something.
* IMPORTANT INFO ... CUT HERE !!! ******************
I DID call Motorola in Illinois and explain my problem to them.
The end result was that in one week, they sent me:
"Motorola SEMICONDUCTOR Application Note : AN974 ;
'MC68881 Floating-Point Coprocessor as a
Peripheral in an M68000 System' "
[ the important part is the "AN974" ] :-)
Call them [sorry, don't have the number on hand]
via directory assistance...
OR WRITE TO THEM AT: Motorola
Semiconductor Products, Inc.
Suite 700
2300 North Barrington Road, Hoffman Estates
ILLINOIS 60195
They were VERY responsive; The "Applications note" is a 41-page
document CLEARLY WORDED and INCLUDES SAMPLE 68000-ASSEMBLY SOURCE
CODE DRIVERS!!!: EVERYTHING SOMEONE WITH A DECENT ELECTRONICS BACKGROUND
COULD EVER WANT TO KNOW ABOUT THE CHIP-- Charts, diagrams, pinouts,
etc... are given. My biggest problem is that I wish I had enough
time to get used to 68000 machine code {this VAX drives me nuts}.
The source code has about 15 pages!!!
This should keep someone busy for a while.
[----------lots deleted----------]
> Thanks in advance
> Thomas Neser
------------------Your welcome, retroactive,
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!uunet!aplcen!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!tut.cis.ohio-state.edu!pt.cs.cmu.edu!dsl.pitt.edu!pitt!cuphub!kar7481 From: kar7481@cuphub.cup.edu (Dan Karbowsky;AtariEliteOfPghPa bbs412-384-5609) Newsgroups: comp.sys.atari.st Subject: Re: CO-Processors---MOTOROLA ARE NICE PEOPLE! Message-ID: <2865@cuphub.cup.edu> Date: 7 Jan 90 00:52:30 GMT References: <9001030805.AA24416@ucbvax.Berkeley.EDU> Organization: California University of Pennsylvania, California, PA Lines: 57