Amazing work by Ken Shirriff.
"I'm developing a microcode-level simulator for the IBM System/360 Model 50 [...]; this blog post provides background to understand the Model 50 and the simulator."
https://www.righto.com/2022/01/ibm360model50.html
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.