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Thread: Gary Kaufman's IMSAI MPU-A Reproduction Board

  1. #11
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    Jun 2014
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    I would be interested in one of each.

    Len
    Spread the joy of Vintage Addiction

    -->www.chronworks.com/<--->www.i8008.net/<--

  2. #12
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    Jan 2010
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    Quote Originally Posted by snuci View Post
    I thought that was on purpose because they are so close It is an excellent reproduction.
    It says it's a reproduction on the back, with Gary's site's URL. They do look nearly identical to the originals from the front, especially the IMSAI board!

  3. #13

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    Well done Gary. This is excellent.

    I'd like to register my interest for 2 x kits (including 2 x PCBs), when available.

    Are you able to post a few notes documenting the steps taken (tools used etc) to get from a scan of the old board, to a clean set of Gerbers and drill file? I recently finished an unrelated reproduction project. It took several hundred hours to accurately measure the placement of tracks and vias, while redrawing the lot in KiCAD. I'd say I did it in about the least efficient way possible!

    Malcolm.

  4. #14
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    You send the boards to Mile High Test/Gardien Services, pay the fee, and get Gerbers back. They'll digitize all of the layers you'd like (silkscreen, solder mask, etc.). A two-layer S-100 sized board costs around $250. The board has to be stripped of all components. They can do multilayer (4+ layer) boards, but the board is destroyed in the process. Well worth the cost IMO -- as you discovered, there's a *lot* of time in it, and I wouldn't be able to get nearly as much done if I were doing the conversion to Gerbers myself.

  5. #15
    Join Date
    Jul 2014
    Location
    New Hampshire, USA
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    IMSAI and Altair CPU Boards are now available, please see the posting in the marketplace for-sale section.



    http://www.vcfed.org/forum/forumdisp...-Sale-or-Trade

  6. #16

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    6/6/2018

    SUBJECT- IMSAI 8080 PARTS LIST

    If anyone has purchased one of Gary Kaufman's IMSAI 8080 reproduction boards and is in need of a parts list, I have enclosed one if it would be useful to anyone.

    > Charles

    IMSAI_8080_Model.jpg
    Parts.jpg
    IMSAI_Parts.zip

    6/6/18

    UPDATE-
    Just an Update to the parts list. As I am currently building the board I noticed the 1/2 watt resistors are really too big to fit
    when mounted side by side as in R25-R32, R12-R11, and R8-R7. It would be better to use 1/4 watt resistors throughout.
    You might try...

    ( 1) 291-470-RC
    (19) 291-1K-RC
    (10) 291-4.7K-RC

    These are still carbon film brown body resistors.

    >Charles
    Last edited by Dawsoca; June 6th, 2018 at 02:28 PM. Reason: Parts List Error

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