Boytacean Boot ROMs

The source code for the Boot ROMs has been forked from the SameBoy boot Roms with some slight changes to adequate to the specific requirements of Boytacean.

Special thanks to the original creators and maintainers of SameBoy for their work and contributions to the open source community. Their work has been invaluable to the development of the Boytacean project.

2bpp file format

To convert a PNG into the 2BPP format, use the following command:

rgbgfx -Z -c embedded -t logo.tilemap -o logo.2bpp logo.png

To reverse the 2bpp files to PNG, use the following command:

rgbgfx -Z -r 16 -o logo.2bpp -t logo.tilemap logo.reverse.png

To run the complete process with compression and de-compression use the following command:

rgbgfx -Z -c embedded -t logo.tilemap -o logo.2bpp logo.png
python pb12.py compress logo.2bpp logo.pb12
python pb12.py decompress logo.pb12 logo.decompress.2bpp
rgbgfx -Z -r 16 -o logo.decompress.2bpp -t logo.tilemap logo.reverse.png

Resources

• Gameboy 2BPP Graphics Format
• rgbgfx(1) — Game Boy graphics converter