The system software of the Commodore 64 has been extensively reverse-engineered. Next to disassemblies of the ROM, several “memory maps” have been published: tables that document system variables in the first kilobyte of RAM, and how to tweak the system software with PEEK and POKE. Now, Michael Steil at pagetable.com has created the Ultimate C64 Memory Map: A C64 memory reference that shows eight sources side-by-side.
These are the references that have been adapted for this:
- Reference from Mapping the Commodore 64 by Sheldon Leemon, ISBN 0-942386-23-X.
- German-language reference from Memory Map mit Wandervorschlägen by Dr. H. Hauck, in 64’er Sonderheft 1986/07.
- German-language reference from Das neue Commodore-64-intern-Buch by Data Becker, ISBN 3890113079.
- Reference by Joe Forster/STA, with awsm’s changes applied.
- Comments from the original M6502 BASIC source by Microsoft and the original C64 KERNAL source by Commodore
- Reference from Commodore 64 Programmer’s Reference Guide.
- Reference as found in Commodore 64 Memory Maps.txt by anonymous.
- Reference by Jim Butterfield in COMPUTE! #29 (October 1982).
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