- http://devernay.free.fr/hacks/chip8/C8TECH10.HTM
- http://www.cs.columbia.edu/~sedwards/classes/2016/4840-spring/designs/Chip8.pdf
- http://www.multigesture.net/wp-content/uploads/mirror/goldroad/chip8.shtml
- http://www.multigesture.net/wp-content/uploads/mirror/goldroad/chip8_instruction_set.shtml
- https://github.com/wernsey/chip8