chip 8 emulator
- opcodes may need fixing
- return string in handle(opcode) for better debug
- implement sound for sound
- add more rendering windows (e.g. display opcodes)
- implement changes here https://www.youtube.com/watch?v=rpLoS7B6T94&ab_channel=Bisqwit
- https://en.wikipedia.org/wiki/CHIP-8#CHIP-8_applications
- http://devernay.free.fr/hacks/chip8/C8TECH10.HTM#0.1
- https://image.slidesharecdn.com/chip8j12017-171122001342/95/lets-write-our-own-chip8-interpreter-javaone-2017-con3584-34-638.jpg?cb=1511317073
- https://multigesture.net/wp-content/uploads/mirror/goldroad/chip8.shtml