Path: 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

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, 
 +-----------------------------------------------------------------------------+
 | Dan Karbowsky      kar7481@pitt!cuphub /   S U P P O R T  T H E  S T ! ! !  |
 | 102 Lee Drive      ___________________/Call the ATARI ELITE of PITTSBURGH'S |
 | Belle Vernon, PA  / BBS (Forem-ST,fnet node 19)  at (412) 384-5609 at 300   |
 | 15012   U.S.A.   / thru 19.2k baud 24 hrs./day 7-days/week   Mention this   |
 |	           / message at logon.                                         |
 +-----------------------------------------------------------------------------+