flashcart

A flash cartridge is one of several cartridges containing flash memory that have been developed for use in video game consoles. These cartridges enable homebrew applications and games to be used. Flash cartridges offer a means of storage for keeping the games until a user decides to run a game, which then it is copied to the cartridge's game ROM for the console to run the game as if it were a normal ROM cartridge. The game storage can be in the form of onboard flash memory on the cartridge, although more recent cartridges use external memory cards as storage in place of onboard memory, such as Compact Flash or Secure Digital memory cards. Recent flash cartridges may also use RAM instead of ROM for flashing games to run on the console as a way to offer faster loading times than what is possible on reprogrammable ROM.
These cartridges remain the best-known way to create and distribute homebrew games for many consoles, such as the Game Boy Advance. (another option in this case being the GBA Movie Player, which can run specially designed homebrew programs but cannot run illicit copies of commercial GBA Game cartridges due to the lack of onboard RAM for fast data access).

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