Jisho

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Noun
1. game copier; backup devicefrom マジックコンピューター
Wikipedia definition
2. Game backup deviceA game backup device, formerly usually called a copier and more recently a flash cartridge, is a device for backing up ROM information from a video game cartridge to a computer file called a ROM image and playing them back on the real hardware. Recently flash cartridges, especially on the Game Boy Advance and Nintendo DS platforms, only support the latter function; they cannot be used for backing up ROM data.
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