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8089 I/O processor — Parallax Forums

8089 I/O processor

SK8 4 USK8 4 U Posts: 39
edited 2005-05-27 06:53 in General Discussion
Hi All....

Here is my next silly question...Does anybody remember a rather obscure Intel microprocessor called the 8089 I/O co-processor?· It was a rather un-used device, long out of production...Computer designers tended to use memory mapped I/O rather than a dedicated co-processor.· DOes any body know where to find old and no-longer made chips?· How about documentation?

Any information or stories about using this device would me interesting to me.

All the best,

Joe
73

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Cats are the creator's method of demonstrating to mankind that man is not the supreme being.

Comments

  • PLJackPLJack Posts: 398
    edited 2005-04-27 06:10
    Obscure is an under statement.
    Aside from pictures, this is all I could find after 30 minutes of browsing.

    www.freepatentsonline.com/4811280.html
  • RickBRickB Posts: 395
    edited 2005-04-27 06:22
    I still have a databook with the 8089 data sheets. There is also a remote (very remote) chance that I remember seeing an 8089 on a surplus board that I might still have. It will be months before I will be unpacking the books and a while after that when I start sorting through the boxes of boards to prepare them for shippment to a precious metal recovery site. Hope you can wait.

    Rick
  • SK8 4 USK8 4 U Posts: 39
    edited 2005-04-27 23:09
    Hi Rick...

    Contact me using the PM feature of the forum when you find your 8089 and make me an offer (if you are interested in selling it)...I have been looking high and low for one...I would be interested in the whole board and photocopy of the data sheet...I will be willing to pay for this and any expenses with copying and shipping. Yes, I can wait as long as needed for this.

    All the best
    73
    Joe

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Cats are the creator's method of demonstrating to mankind that man is not the supreme being.
  • Robert KubichekRobert Kubichek Posts: 343
    edited 2005-04-27 23:36
    I found a bunch of hits for 80c89, is it the same as an 8089, but in C-Mos build?

    http://www.legendny.com/

    Plus I found 8089, and 80c89 on partsminer.com

    And also here;

    http://www.doom.com/

    And in stock here 8089A;

    http://www.cci-inc.com/stock.asp

    cool.gif
  • SK8 4 USK8 4 U Posts: 39
    edited 2005-05-27 06:53
    Hi all...

    Just a quick update...I found an old copy of the 8089 I/O processor handbook published by Osborne on amazon for 14 bucks...quite a bit less than the hundred plus I have seen it for on specialty used book sites! Yes, I have ordered one to go in my growing u-processor library. When I get it, if anybody want's a photocopy of a certain page, e-mail me.

    All the best,

    Joe

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Cats are the creator's method of demonstrating to mankind that man is not the supreme being.
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