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Thread: HEXTIr - The TI HexBus SD Drive

  1. #1

    Default HEXTIr - The TI HexBus SD Drive

    For those not on other forums, I am working on a TI HexBus-based SD card drive, and I have it working (well, loading and saving programs, other stuff being added as time goes on)

    GitHub source code is here: https://github.com/go4retro/HEXTIr

    Video of unit operating: https://www.youtube.com/watch?v=LX5ahVCRdvM

    Jim

  2. #2
    Join Date
    Apr 2003
    Location
    Amarillo, TX
    Posts
    1,132

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    Holy smokes!

    What a beautiful design.

    Thanks for keep the hexbus and dockbus systems alive!
    Outside a dog, a book is a man's best friend. Inside a dog it's too dark to read! Groucho Marx

    Curtis McCain

    http://pages.suddenlink.net/curtismc/

  3. #3

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    Neat! Think it would work with a CC-40? I have the wacky wafertape drive but this would clearly be a better idea.
    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
    Machine room: http://www.floodgap.com/etc/machines.html

  4. #4

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    Quote Originally Posted by ClassicHasClass View Post
    Neat! Think it would work with a CC-40? I have the wacky wafertape drive but this would clearly be a better idea.
    I am testing it with a cc40

    Jim

  5. #5

    Default

    Excellent! You can pencil me in for purchasing one.
    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
    Machine room: http://www.floodgap.com/etc/machines.html

  6. #6
    Join Date
    Apr 2003
    Location
    Amarillo, TX
    Posts
    1,132

    Default

    BTW, CC-40 or TI-74 if you look at the dockbus and hexbus, they're essentially the same. Just a different configuration. There's supposedly some protocol differences, but nothing too serious. . It's fairly easy to build an adapter from one to the other. Just need some perf board, soldering iron, wire wrap wire, a power source for the dockbus side of the world, and the pins.

    I've actually done a couple and boxed them in an old Travan tape container. Here's the pictures: http://pages.suddenlink.net/curtismc/7495.htm

    Oh, and @brain, I want one too! My fine soldering days are pretty much in the past. What sort of pricing do you think they'd run?
    Outside a dog, a book is a man's best friend. Inside a dog it's too dark to read! Groucho Marx

    Curtis McCain

    http://pages.suddenlink.net/curtismc/

  7. #7
    Join Date
    Oct 2011
    Location
    Bedford, NH, USA
    Posts
    1,348

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    I definitely want one of these! Please sign me up for one.

    smp

  8. #8

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    Prototype unit, assembled and working:

    IMG_8178.jpg

    Next steps:

    • Add code to support sequential files
    • Add relative file support
    • Test 3v3 operation at 8MHz
    • Create cost reduced production PCB

  9. #9

    Default

    Jim, will you take my money?

    I'm amused by the prospect of PRG, SEQ and REL files on a CC-40. What about USR? WHAT ABOUT DEL???!?!!?
    Tens of VLIR users want to know!
    I use my C128 because I am an ornery, stubborn, retro grouch. -- Bob Masse
    Machine room: http://www.floodgap.com/etc/machines.html

  10. #10
    Join Date
    Oct 2011
    Location
    Bedford, NH, USA
    Posts
    1,348

    Default

    Quote Originally Posted by ClassicHasClass View Post
    Jim, will you take my money?
    Yes, indeed! Please take my money, too! I'm having a hard time typing this, as I'm drooling all over myself.

    smp

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