bootrom-gen

A program for generating custom Game Boy boot ROMs

How it works

The program looks for two images in the current directory:

• A 48x8 pixel png called logo.png
• An 8x8 pixel png called notice.png

It modifies the standard Game Boy boot procedure to display your custom images in place of the Nintendo logo. Currently the patched ROM is outputted in binary format, so it is recommended that you pipe the output to a file.