i use nestopia to emulate super mario bros and i need to know if there are any limits to what controller i can use. for example: i have a ps1 controller hooked up to my computer, am i allowed to use it?

a ps1 controller is completly fine as long as you dont do Turbo/Autofire and left+right/up+down which is not allowed for any controller.

You can use a Dance Dance Revolution controller if you want (and you definitely should)

The only thing you CAN'T do is

• turbo (or other multi-functions from a single button)
• left+right simultaneously... Although most emulators disable that by default, even if you were to press both together on a capable controller

I can't remember who... But there are a few runners that use an Xbox controller

And probably almost half of runners on the leaderboard use a computer keyboard.