The following is an introduction to the simulator:
Simulator has a long history, almost accompanied by the history of computer development. In many countries, it is illegal to own and use simulators. In addition, in the United States, it is illegal to collect rom if the collector himself does not have the original electronic board of the game or the original carrier of the game such as cassette and CD. Emulator (EMU) is a kind of program, whose original meaning is "emulator". Computers or other multimedia platforms (PDA, mobile phone) can run programs on other platforms, mainly video games and arcade simulators, as well as some palmtop simulators.
Simulators generally need rom to execute. The original source of rom is some rom chips of the original platform. Copy the original program by some means, generally called "dump", and then load these Roms by the simulator to realize the simulation process.
Refer to Baidu Encyclopedia-Game Simulator for the above information.