EXPLANATION OF WHAT THIS DOES:
This is a batch file I compiled to an EXE that can set the original monochrome Gameboy ROM's default color pallet to be greyscale upon being run in a Gameboy Color or Gameboy Advance. (You won't have to manually press DPAD-LEFT + B anymore.) It works by changing the header information of the ROM and internally identifying the game as "X", which tricks the Gameboy Color BIOS into thinking you're playing the Japan-exclusive game. "X" is the only game ROM known to use the greyscale pallet by default.
This uses an embedded and unmodified version of RGBFIX to achieve this. I simply made it idiot-proof for the sake of simplicity.
HOW TO USE IT:
Simply place all the monochrome game ROMs you want to convert into the same directory as the executable, and run it.
NOTE: This does NOT work for dual-mode games that come on black cartridges, or on Color games. (This only works for original gameboy games!)
CREDITS:
Jayro - For making the batch file and icon from scratch.
https://ko-fi.com/jayrojones
Jayro0783 on Discord
The gbdev team that maintains RGBFIX, one of the many amazing tools that are a part of the RGBDS toolkit:
https://rgbds.gbdev.io
https://github.com/gbdev/rgbds
- Change log
- v1.1 - Fixed a small bug.
v1.0 - Initial release.