kar7481@cuphub.cup.edu (Dan Karbowsky;AtariEliteOfPghPa bbs412-384-5609) (01/07/90)
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. | +-----------------------------------------------------------------------------+
Chris.Forker@newcastle.ac.uk (Chris Forker - Nav Arch-) (01/11/90)
In article <2865@cuphub.cup.edu> kar7481@cuphub.cup.edu (Dan Karbowsky;AtariEliteOfPghPa bbs412-384-5609) writes: >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. > [----------lots deleted----------] > > | Dan Karbowsky I have an Atari MC68881 board fitted to my Mega. The chip is rated at 16Mhz. I use Prospero Fortran & Pascal who also supply the 68881 drivers. It really makes the ST fly on the numeric intensive ops.. I am hoping to get a 16Mhz 68000 installed at some stage. This should make for a more interesting machine. I got the board from SDL which is the education arm of Silica Shop. The board cost 120 pounds sterling about a year ago. Address:- Silica Shop 1-4 Mews, Hatherley Road, Sidcup, Kent DA14 4DX. TEL: 01-309-1111 Hope this helps Chris +-=--=--=--=--=--=--=--=--=--=--=--=--=--+--=--=--=--=--=--=--=--=--=--=--=-+ | mail: Chris.Forker@newcastle.ac.uk | Dept. Marine Technology | | voice: +44 91 2226000 X 6750 | Newcastle University | | fax: +44 91 2611182 | Newcastle upon Tyne | | | NE1 7RU ENGLAND | +-=--=--=--=--=--=--=--=--=--=--=--=--=--+--=--=--=--=--=--=--=--=--=--=--=-+