AFAIK Jeri Ellsworth did the same to the 6502. https://www.nytimes.com/2004/12/20/technology/a-toy-with-a-story.html https://www.nytimes.com/2004/12/20/technol

AFAIK Jeri Ellsworth did the same to the 6502. https://www.nytimes.com/2004/12/20/technology/a-toy-with-a-story.html https://www.nytimes.com/2004/12/20/technology/a-toy-with-a-s... Can't find it in that article, but IIRC she looked at scans of the silicon to figure out exactly what the chips in a C64 do.