An ATARI Joystick driver written in Verilog and Icestudio to use your ATARI like controllers in different projects.
The Atari Joystick is a vey simple controller where each direction is a button, having the following outputs:
- RIGHT
- UP
- DOWN
- LEFT
- FIRE BUTTON
All the buttons are normally closed, that means that the buttons are HIGH without pressing and LOW pressed.
You will need external pull-up resistors to receive the right values from the controller.
You can find more information at:
https://en.wikipedia.org/wiki/Atari_joystick_port
You can also follow how this project was made at the twitter thread (Spanish):