A few years ago, I discussed a piece of homebrew software called Game Boy Interface (GBI). GBI was written and is maintained by a GameCube enthusiast who goes by the handle Extrems. Extrems intended to replace the official Game Boy Player (GBP) Start-Up disc for the GameCube which, when combined with the attachment that is fitted underneath your GameCube, allows you to play Game Boy, Game Boy Color and Game Boy Advance cartridges using genuine GBA hardware. Before GBI, if you did not have the official disc, your GBP attachment was useless. GBI quickly made the official disc essentially obsolete, but the software has been radically revised since I first profiled it. Let's return and see what's changed and I will give my own personal take on how I like to use the software. This will not be a fully comprehensive guide because there are features geared toward hardware I do not own and uses I do not put GBI, but if you are new to GBI you may find something here instructive.
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