I've been playing about with SIMMs, making them do stupid things. No, not Sims, SIMMs.
After something of a hiatus, I've finished (for now) another Teensy-based project, to read and write to a 30-pin SIMM from the '90s. The background is that I'm interested in eventually building a 68K Mac compatible, but it's a project I've never found the time for. However, warm-up experiments, like playing with the SIMMs I'll use, are very doable. :)
All the code and notes are up on Github, but really what I've been doing is investigating how quickly SIMM data decays if you don't run the required refresh cycle. The summary of what I found was:
In any case, fun, fun, fun! Now to find the next toy microcontroller project - probably a good opportunity to get that RPi Pico doing something interesting....