| Most classic games are stored on game cartridges.
For example the Atari 2600, Nintendo NES and Sega Genesis (among
many others) use game cartridges. The games are stored on those
cartridges using ROM chips (Read Only Memory). Some people have
created special devices which can read the data from those ROM
chips and which can save that data on a PC in a ROM file. In
other words, a ROM file contains all data from a game cartridge.
Of course for systems which don't use game cartridges, such
as the Playstation, ROM files don't exist. In case of the Playstation
you can put the Playstation CD in your CD-ROM drive to play
games on a Playstation emulator. |