- https://gbdev.io/pandocs/About.html
- https://rylev.github.io/DMG-01/public/book/introduction.html
- http://www.codeslinger.co.uk/pages/projects/gameboy/beginning.html
- https://meganesu.github.io/generate-gb-opcodes/
- https://gbdev.io/gb-opcodes/optables/
- http://www.codeslinger.co.uk/pages/projects/gameboy/graphics.html
- https://nightshade256.github.io/2021/03/27/gb-sound-emulation.html