Changes
/* USB joystick */
=== USB joystick ===
Before learning final platform and its embedded controlers (USB joystick with a controler, is just 7 wires : left right up down buttonX buttonY buttonZ), and after having destroyed 12 collector original joysticks during tests... I did some research about simply connecting a modern USB joystick into FPGA. It was a part of my Agile Method run, I worked about two months on it.
==== Sniffing USB frames ====
USB uses two wires in order to transmit frames, green and white, each with two logical values: 0v and 5v.
