Space Invaders emulation on various modern microcontrollers.
For more information, see this thread.
Kudos to MoleskiCoder for pointers to sound emulation.
- 1: 1-player start
- 2: 2-player start
- 3: add coin
- L-CTRL: player-1 left
- L-ALT: player-1 right
- R-SHIFT: player-1 shoot
- R-GUI: player-2 left
- APPS: player-2 right
- L-SHIFT: player-2 shoot
- SPACE: pause
- F1: machine reset
- F6: save machine state to serial
- F7: restore machine state from serial