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Also what I just describing is a form (a very simple form) of Finite state machine. They're very handy if you know how to use them when solving problems with enable and disable logic blocks in code.

While that code will work you should be able to do it quicker with pointers and copying the block of memory all in one go and not reading each pixel individually Pseudo code: LineLength = Width * Pixel Size; for &#40;x=0; x < Height; x ++&#41; for &#40;i=0; i < LineLength; i++&#41; C...

So you already know about: http://www.usb.org/developers/hidpage/

It's just now about manipulating the USB port on the PSP that's the problem?

You should check out this topic:

http://forums.ps2dev.org/viewtopic.php?t=4197