ROM or Read-only memory is a class of storage medium used in computers and other electronic devices. Data stored in ROM cannot be modified, or can be modified only slowly or with difficulty, so it is mainly used to distribute firmware (software that is very closely tied to specific hardware, and unlikely to need frequent updates).
In its strictest sense, ROM refers only to mask ROM (the oldest type of solid state ROM), which is fabricated with the desired data permanently stored in it, and thus can never be modified. Despite the simplicity of mask ROM, economies of scale and field-programmability often make reprogrammable technologies more flexible and inexpensive, so mask ROM is rarely used in new products as of 2007.
While the emulator, is a computer application that allows users to play games are usually played in accordance with the console such as Nintendo DS, Game Boy Advance, etc.. even emulator can play games on the playstation 1. The emulator can play many games-gamesnya (in accordance with what emulator)
to be able to play the game, first you have to have the emulator. You can get the emulator by downloading it. download link is on every game. Once you have the emulator, open the emulator and then enter the game you have downloaded.