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======NR Disc======
======NR Disc======
NR Discs (possibly "Nintendo Recordable") are blank [[NROM]] discs with a special authentication key which makes them only compatible with NR Reader and NR Writer drives. They were used by game developers as blank discs (equivalent to a DVD-R) to burn disc images onto so that they could be tested on an NR Reader.
NR Discs (possibly "Nintendo Recordable") are blank [[NROM]] discs with a special authentication key which makes them only compatible with NR Reader and NR Writer drives. They were used by game developers as blank discs (equivalent to a DVD-R) to burn disc images onto so that they could be tested on an NR Reader.
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[[File:NR Disc.jpg|thumb|GameCube NR Disc.]]
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[[File:NPDPCartridge.jpg|alt=An NPDP Cartridge.|thumb|An NPDP Cartridge.]]
[[File:NPDPCartridge.jpg|alt=An NPDP Cartridge.|thumb|An NPDP Cartridge.]]