Sources:

• http://www.multigesture.net/articles/how-to-write-an-emulator-chip-8-interpreter/
• http://devernay.free.fr/hacks/chip8/C8TECH10.HTM#2.4
• https://github.com/AlexEne/rust-chip8
• https://en.wikipedia.org/wiki/CHIP-8
• https://github.com/dmatlack/chip8/tree/master/roms

related:

• https://news.ycombinator.com/item?id=13290362
• https://www.youtube.com/watch?v=Fsi9HPcyrU8
• http://imrannazar.com/GameBoy-Emulation-in-JavaScript:-The-CPU