1. 1 COMP541 Joysticks Anselmo Lastra

2. 2 Atari 2600 Joystick http://www.atariarchives.org

3. 3 We Have Sega Joypad  Enhanced version with more buttons  Has mux  Select pin chooses first or second set of buttons http://pinouts.ru/data/genesiscontroller_pinout.shtml

4. 4Links  http://pinouts.ru/data/JoystickAtari2600_pinout.shtml http://pinouts.ru/data/JoystickAtari2600_pinout.shtml  http://pinouts.ru/data/genesiscontroller_pinout.shtml http://pinouts.ru/data/genesiscontroller_pinout.shtml  http://www.epanorama.net/documents/joystick/ataristick.html http://www.epanorama.net/documents/joystick/ataristick.html  http://www.epanorama.net/documents/joystick/tvgames.html http://www.epanorama.net/documents/joystick/tvgames.html