USEFUL LINKS FOR NES CONTROLLER:
- NES Schematics
- Joy Sticks & other Game Controllers
- The Nintendo Joy Stick Controller
- Project: NES to Atari 2600 Controller Interface
- NES Technical Documents
- The Super NES Gamepad
- NES History
- COM Serial Port
- VGA schematics (shows ports and lists pins)
- Tutorial about VGA basics
- VGA Code in C++
- Video Standards
- VGA schematics (shows descriptions of pins)