Your bible was the memory map, probably. This is a very basic one (this one is rather for POKE than SYS): http://www.c64-wiki.com/index.php/Memory_Map http://w

Your bible was the memory map, probably. This is a very basic one (this one is rather for POKE than SYS): http://www.c64-wiki.com/index.php/Memory_Map http://www.c64-wiki.com/index.php/Memory_Map You'd have to look for kernal memory map with entry points or BASIC memory map. Like, perhaps, this one here: http://unusedino.de/ec64/technical/aay/c64/krnromma.htm http://unusedino.de/ec64/technical/aay/c64/krnromma.htm