Forum etiquette

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This forum is part of our mission to promote the preservation of vintage computers through education and outreach. (In real life we also run events and have a museum.) We encourage you to join us, participate, share your knowledge, and enjoy.

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What uses a 287 co processor.

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    What uses a 287 co processor.

    I've aquired a 287 co processor. not sure if it is the original or later models. Just curious what actually uses that? I just like hardware, so whatever fits on my boards goes on my boards.

    Anything with a 80286 as its primary CPU.


      Some early 386 motherboards had 287 sockets as well.
      "Good engineers keep thick authoritative books on their shelf. Not for their own reference, but to throw at people who ask stupid questions; hoping a small fragment of knowledge will osmotically transfer with each cranial impact." - Me


        Originally posted by eeguru View Post
        Some early 386 motherboards had 287 sockets as well.
        Yup, got one of those myself. 20MHz 80386.


          I was thinking what kind of software that utilized them. anything.. fun?

          but anyway. it is a 10mhz one. does it matter what kind of 286 I use it with? I got 8, 10 and 12mhz models. Maybe other speeds too, I take what I'm given or what is available at a cheap price locally


            If you mean software, it's mostly CAD stuff, math packages, spreadsheets.
            Hardly ever vintage games - Mobygames only finds 7 pre-1995 games with FPU support.


              The only game I ever found that used the x87 floating point was a shareware game called Begins. Fun game - based on the old Trek73 but a lot more fun.


                Most notably, AutoCAD. It runs painfully slow with an 80287 emulator.
                Be polite and I may let you live.



                  Earlier thread on the subject:



                    I'm not sure about the 287 specifically but I heard SimCity classic uses the fpu, I dissasembled it and sure enough it uses a bunch of FPU instructions, not sure exactly why yet though.

                    EDIT: after a little research it seems the 80287 didn't add that many extra features over the 8087, So I doubt much software supported it specifically.
                    Last edited by PgrAm; April 22, 2017, 02:44 PM.
                    Currently working on new DOS game, Chuck Jones: Space Cop of the Future, Check out my Dev Blog. WARNING: contains rocket powered El Caminos

                    Vintage Computers:
                    Unitron Apple II clone, 2x Commodore Vic-20, Commodore 64, Commodore 128, Amiga 500, Macintosh Plus, Macintosh SE, AST Premium 286, 3 386sx PCs, Atari TT030


                      BTW, I think the most interesting game which took advantage of FPU was Scorched Earth.
                      Its trajectory calculations were very realistic, and included many variables: gravity, wind, air viscosity, etc., so a coprocessor was very useful indeed.


                        Interesting that nobody mentioned Lotus 1-2-3 or SuperCalc, etc.

                        For many users, these were the primary reason to buy an NDP. I guess that tastes change.


                          Originally posted by Chuck(G) View Post
                          Interesting that nobody mentioned Lotus 1-2-3 or SuperCalc, etc.
                          Lotus 1-2-3 is quoted in the thread that I referred to.


                            Originally posted by Chuck(G) View Post
                            Interesting that nobody mentioned Lotus 1-2-3 or SuperCalc, etc.
                            Hey, I did mention "spreadsheets".
                            For me, the primary spreadsheet in the 286 era was Quattro Pro.


                              It seemed to me at that time that the most popular was AppleWorks because early //es were going cheap, there was no copy protection, and then everyone that wanted a spreadsheet had one.
                              Be polite and I may let you live.