A better way to snif USB could be generation of TCP/IP packets encapsuling USB packets, and to record them directly on PC from a RJ45 plug, using this way I could save more than 10 seconds of information transmission (RAM size is limited on FPGA platfoms)
[[File:Usb-paf.png|thumbnail]]
http://www.ulule.com/usb-paf (unfunded) => but MiST-board final platform does offer USB pro competition Joystick compatibility <3 <3 <3