.C64

.C64

Commodore 64 emulator freeze/saved-state file (CCS64).
Commodore 64 graphical image file. Given how many formats are unique to the Commodore 64, the file is likely to be one of the more popular types such as Doodle, Koala, etc. (Many applications, many formats).
Commodore 64 image file (Andreas R Kleinert's SView5).
Commodore 64 program file (Many Commodore 64 emulator applications).
Commodore 64 SID chip audio file (SIDplay).
Documentation specific to the Commodore 64 operating system, Commodore 64 programs or programming, etcetera.