Hacking a SNES & NES controller with a USB Keyboard Chip

I been wanting to buy Retrolink's SNES & NES controller but I would love the vintage feel of the REAL SNES Controller and my crazy idea was to hack up a USB Keyboard and mod the SNES & NES controller to be played on my Macbook using nestopia emulator, and my question is this (look at the next line for my question)

Is it possible to hack up a USB Keyboard's chip and then Solder the wire to the contact points of the controller without modding it in any way or just nab a converter that does the job? I wanna bring new life to a scrapped USB Keyboard's chip instead of getting Retrolink's SNES Controller to plug and play.

So how I can mod the controller without destorying the old chip inside?

Sure, using the same logic you want to use... Keep the traces to find out the buttons you want to use...


Simple search here would give you some options. Also a search on Google for NES Controller USB mod would give you several more projects.