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06/23/11: ProCoCo Cart: A Propeller-based Tandy/Radio Shack Color Computer 2 cartridge by plainsteve, | Tags: , , , | Category: General, Projects | 6 comments - (Comments are closed)

ProCoCo Cart: A Propeller-based Tandy/Radio Shack Color Computer 2 cartridge

I made a custom cartridge for the CoCo2 last fall. Here’s a write up on my web page:

http://www.plainsteve.com/electronics/?p=17

6 comments to ProCoCo Cart: A Propeller-based Tandy/Radio Shack Color Computer 2 cartridge

  • DarrenA

    How many of those cartridge port breakout boards did you make? I can see how that would be very useful for hardware development on the CoCo. Do you have any to sell?

  • JasonL

    That’s a really neat project, nice work 🙂

  • pilot352

    plainsteve,

    If you decide to resurrect the project, might I suggest a part like this…

    http://www.nxp.com/documents/application_note/AN240.pdf

    Level shifting would, in my opinion, be a safer approach then just using current limiting resistors.

    Just an opinion and suggestion.

    -Pilot

    • pilot352

      Ooops, I forgot to note the part number from the Application Note…

      74LVT4245 or the 74LVC4245… This part is bi-directional and will buffer the data, address support signal pins.

      -Again, just a suggestion

  • NickM

    What can you do with it? Can it act as a co-processor?

    Can it be made to play sound while the CoCo keeps working?

  • linville

    Cool project! I’ve thought of playing with an idea like that myself. 🙂

    NickM, it looks to me as if the cart disables the 6809 completely (by holding ^HALT low all the time). So, this is more like a brain transplant than a co-processor. I’m not sure how appealing that is to the average CoCo users, but it is a neat way to add CoCo system hardware to a new processor.

    BTW, I’d like a few (or at least one) of those cartridge port breakout boards as well… 🙂