Whenever I need to look up some code in the ROM of the Commodore 64, I have the choice of the commented disassembly by Marko Mäkelä, the one by Ninja/The Dreams, or the one by Lee Davison – or I can just use my paper copy of “Das neue Commodore-64-intern-Buch“, an excellent line-by-line commentary in German.
That’s why I scanned, OCRed, cleaned up and cross-referenced it.
The raw txt file is maintained at github.com/mist64/c64rom. Corrections, additions and translations welcome.
The cross-referenced HTML version is available here at pagetable.com/c64rom.