Is there a Genesis/MD VC injection method

Discussion in '3DS - ROM Hacking, Translations and Utilities' started by mqk9999, Nov 7, 2015.

  1. mqk9999
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    mqk9999 GBAtemp Regular

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    Just kind of wondering. I've heard snippets here and there about possibly injecting a ROM into the emulator they use for the 3D genesis/MD games
     
  2. Robz8

    Robz8 Coolest of TWL

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    Yes, it's possible, but unlike the nintendo VC roms, the Genesis/MD and GameGear roms are mdf compressed, and have to be decompressed via mdfDecompressor from mdfTools (by Normatt), and to be renamed for them to work. I think injection works best if it's on 3D Sonic 2.
     
    Last edited by Robz8, Nov 7, 2015
  3. mqk9999
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    mqk9999 GBAtemp Regular

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    Is there a guide and/or a tool to help with the injection? Or is it ye olde disassembling/reassembling the CIA?
     
  4. Robz8

    Robz8 Coolest of TWL

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    No CIA needed.
    The romfs of the game (3D Sonic 2, in this case) can be dumped through braindump, and then extracted with RomFS Extractor. Then go into "_romfs\system\roms", and place 2 files which is the same compressed rom in the folder, and call them "Sonic2.SGD.m" and "Sonic2_USA.SGD.m".
    Use RomFS Builder to build the romfs file, and call it "gameid.romfs", then copy it to "SDcard:\hans\". Open up Homebrew Launcher, then load 3D Sonic 2 through HANS, set romfs to "YES", then choose "OK".
     
  5. mqk9999
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    mqk9999 GBAtemp Regular

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    Heck yeah, thanks! Wanting to make a Warsong inject