How MOS 6502 Illegal Opcodes Work – Michael Steil

I really enjoy how popular retro tech of the 6502 era has become (and thus how much content is created about the subject) from ~= 2017ish to now. For me it started on YouTube with 8-bit-guy and Adrian, but clearly it's in the zeitgeist in general, in a way that I don't feel like it was in the '00s or early '10s.

Those of you who are Gen X and grew up with parents who bought you computers at a young age, you are so fortunate. Reading those manuals and learning to code in assembly gave that cohort an amazing fundamental understanding of computing. It's similar to the understanding of the Internet's underpinnings that we Millennial geeks gained by experimenting with HTML and the Web, before everything was sealed up and packaged for consumption.

But I sure would love to experience some long summers as a kid in the early 80s with nothing but time and a Commodore 64 and its manual.

Michael’s blog is one of my favorites. His “Ultimate Guide” talks are great and I rewatch them at least once a year.

Ultimate Guide to the C64: https://youtu.be/ZsRRCnque2E?si=v4qQ9mCx3MafEwAq

Ultimate Guide to the Game Boy: https://youtu.be/HyzD8pNlpwI?si=gn-F8yuRPJKoXmC7

Ultimate Guide to the Apollo Guidance Computer: https://youtu.be/xx7Lfh5SKUQ?si=3qbvMohcGo6mBLrJ

(2008)