News

  • Keyfix - mylar keyboard replacement

    by patrick ulland
    We don’t sell the Keyfix board preinstalled in a keyboard. I’d like to, maybe some kind of core exchange. But I need cores! If you have an electric...

  • CoCoIO Concentrated Errata

    by patrick ulland
    This is the 'live' version of the pack in errata sheet that came with your CoCoIO. It's updated periodically, this is the 12/8/21 version. compatib...

  • CoCoIO Buffer math outline

    by patrick ulland
    No matter what you do with CoCoIO, you'll be managing buffer addresses, based on a few hints from the WizNet chip. This includes starting and endin...

  • CoCoIO_net

    by patrick ulland
    CoCoIO Networking This post summarizes parts of the W5100s datasheet and the Uthernet manual after translation to CoCo/6x09. You’ll want to grab th...

  • Multipak upgrade

    by patrick ulland
    What does an MPI do, and why does it have to be upgraded? Back in the day, small computer systems addressed everything as RAM. Great theory, but si...