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#ColecoAdam

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New blog post! When you get a Coleco ADAM diagnostics cartridge, and it doesn't work, you have to diagnose the diagnostics. Then you end up writing your own diagnostics, and use those diagnostics to diagnose the diagnostics. Hoo boy. I gotta sit down for a second. #retrocomputing #colecovision #colecoadam leadedsolder.com/2024/11/05/co

Leaded Solder · Do I have a Bad Adam?Developing a memory tester for the Coleco ADAM home computer in Z80 assembly language, and debugging a faulty diagnostics cartridge.
I got passed an "ADAM Diagnostics" cartridge that froze up on my machine, so I've gone down this weird rabbit hole of trying to figure out if something is wrong with my ADAM, or if it's a bug with the diagnostics cart.

Latest part of this quest is writing *my own* diagnostics cart, which involves a relatively tricky set of jumps in order to test the upper 32K of RAM. It's working on real hardware, which is very cool. At least now I know my RAM is (trivially) ok.

#retrogaming #colecovision #colecoadam #retrocomputing

It's nice seeing #colecoadam users use Netcat to dial into BBSes.
I had started work on a comms program with a more complete UI, but had to pause because I had more pressing matters to attend to (finalizing Apple2, starting macintosh bring-up, starting the TRS-80 Color Computer bring-up), but as with all things, the source code to "FujiLink I" was posted into the fujinet-apps repo on FujiNetWiFi's GitHub.

It's written in #C and builds with #Z88DK. Does somebody want to pick it up and finish it?

GitHub: github.com/FujiNetWIFI/fujinet