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Thread: Looking to buy an 8087 confused about all the models

  1. #1

    Default Looking to buy an 8087 confused about all the models

    Hi all,

    I am looking at add a 8087 co-processor to my XT system. It currently has a NEC V20 in it running at 4.77mhz. I notice that there seems to be a huge variety of 8087's that were produced in various clock speeds and revisions. Is there like an ideal one to get for a system like this or it just doesn't matter they will all work similarly.

    Thank you.

  2. #2

    Cool

    Does not matter. A 10MHZ 8087 will run in step with the CPU @ CPU speed. Also: unless you have software that utilizes the FPU it is just socket filler.

  3. #3

    Default

    Quote Originally Posted by PeterNC View Post
    Also: unless you have software that utilizes the FPU it is just socket filler.
    I seem to recall there were only a few programs that actually used one of those.
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  4. #4
    Join Date
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    Default

    Quote Originally Posted by pagefault View Post
    I am looking at add a 8087 co-processor to my XT system.
    The information at [here] may assist.

  5. #5

    Default

    Quote Originally Posted by Ole Juul View Post
    I seem to recall there were only a few programs that actually used one of those.
    Turbo Pascal 2.0 being one of them (from 1984 onward). It was a big thing for them back then!

  6. #6

    Default

    I have a boxed 8087 with manual if that's of interest. It lists ~ 150 programs that can use this coprocessor.
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  7. #7

    Default

    Thanks for the replies all. I relise not a lot of software will use it I just wanted to add one for the sake of being able to, they are inexpensive and would be a decent addition to the system.

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