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LagoLunatic / GCFT

GameCube File Tools, a GUI tool for modifying some common file formats used by GameCube games
MIT License
94 stars 5 forks source link

Where is the gamecube's game file format documented? #16

Closed badasahog closed 1 year ago

badasahog commented 1 year ago

I know this isn't directly related to this project in particular, but I'm working on something that uses GameCube iso files, and was hoping to inquire about their format.

If you would be willing to link me to the resource you used when developing this project I would greatly appreciate it.

LagoLunatic commented 1 year ago

Can't remember the exact details as it was over 5 years ago that I first coded my GCM implementation, but I think this is the main page I referenced: http://hitmen.c02.at/files/yagcd/yagcd/chap13.html#sec13

I also seem to recall that some of the more nitty-gritty practical details weren't documented anywhere I could find, so I dug into Dolphin's source code to learn how they read the format.

Neither of those explain how to write arbitrarily modified files back to a GCM, so I pretty much just figured that out myself.