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Thread: Announcing the Snark Barker MCA - finally, an open source Micro Channel Sound Blaster

  1. #1

    Default Announcing the Snark Barker MCA - finally, an open source Micro Channel Sound Blaster

    Yep, after months of work, I've finally managed to get it working!

    I'm happy to announce the release of my latest sound card, the Snark Barker MCA! This is a Sound Blaster compatible card designed for Micro Channel bus computers, including the IBM PS/2 family.

    The design files can be found here: https://github.com/schlae/snark-barker-mca.

    And you can also follow the Twitter thread https://twitter.com/TubeTimeUS/statu...23576346468352.

  2. #2

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    YESSSSSSSSSS I have been anxiously awaiting! that rocks dude!

  3. #3

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    Good work, man.
    -- Lee
    If you get super-bored, try muh crappy YouTube channel: Old Computer Fun!
    Looking to Buy/Trade For (non-working is fine): Tandy 1000 EX/HX power supply, Mac IIci hard drive sled and one bottom rubber foot, Multisync VGA CRTs, Decent NuBus video card, PC-era Tandy stuff, Weird Old Unix Stuff, Aesthetic Old Serial Terminals (HP and Data General in particular)

  4. #4
    Join Date
    Dec 2008
    Location
    libtard capital, California
    Posts
    1,123

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    surely you had more than one pcb board fabricated?

  5. #5

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    Quote Originally Posted by dorkbert View Post
    surely you had more than one pcb board fabricated?
    Yep! Those are going off to other beta testers. MCA machines are tricky beasts and I don't have too many representative examples.

  6. #6
    Join Date
    Sep 2016
    Location
    Shrewsbury, MA
    Posts
    1,379

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    Yes!!!!

  7. #7

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    "When ordering the board, you may want to specify a card edge bevel of 20 degrees (details of the bevel are included in the Dwgs.User layer). This is optional but makes the board much easier to insert in the bus slot. If you want to save money, you could order without the bevel and add a bevel yourself using a file."

    http://ps-2.kev009.com/ohlandl/RS600...-K.html#ECA265

    Folks, do not FUTZ with not having a card edge bevel!!!

    If there is no bevel, it is VERY likely you will bend an MCA slot contact, as the flat board edge catches the top of the slot contact, and crushes it downward, bowing the contact all to heck. Very fiddley in reforming that spring finger back into a useable shape...

    I had a 7012-397 that had one of those 9-K with the non-beveled edge installed. Luckily, there was only ONE turbo dorked contact, but it could be a LOT worse.

    You have been warned...

  8. #8
    Join Date
    Jan 2012
    Location
    Connecticut, USA
    Posts
    3,280

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    Im so glad i sold off my mca soundcards last year for top dollar (sealed in box) as these will brimg down the value!

    But so glad they were made! Keep up the good work.

  9. #9

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    Quote Originally Posted by ardent-blue View Post
    "When ordering the board, you may want to specify a card edge bevel of 20 degrees (details of the bevel are included in the Dwgs.User layer). This is optional but makes the board much easier to insert in the bus slot. If you want to save money, you could order without the bevel and add a bevel yourself using a file."

    http://ps-2.kev009.com/ohlandl/RS600...-K.html#ECA265

    Folks, do not FUTZ with not having a card edge bevel!!!

    If there is no bevel, it is VERY likely you will bend an MCA slot contact, as the flat board edge catches the top of the slot contact, and crushes it downward, bowing the contact all to heck. Very fiddley in reforming that spring finger back into a useable shape...

    I had a 7012-397 that had one of those 9-K with the non-beveled edge installed. Luckily, there was only ONE turbo dorked contact, but it could be a LOT worse.

    You have been warned...
    Ouch! This is good to know, thanks for bringing it up. I'll go update the instructions to warn about that.

  10. #10
    Join Date
    Jul 2009
    Location
    Central Florida
    Posts
    3,813

    Default

    Nice board! How much to order one? Now if we could get an MCA IDE made that would be great.
    *FrankG*

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