Mine are extremely weird, partially due to the fact that my laptop is very picky when it comes to what keys can be pressed at the same time, and partially due to that my keyboard layout is different (I'm from Belgium).
For FCEUX
←↑→↓ = Arrow Keys
A = Left Shift
B = [<] (which is just right of left shift on AZERTY keyboards, in QWERTY it's "\" I think)
Sel = Ctrl
Start = Space
Autofire A W (left of X on AZERTY)
Autofire B X
Save State 1 C
Save State 2 B
Load State 1 V
Load State 2 N
Speed up R
Speed down F
Frame Advance Numpad 0
I think that's it. I don't really use Frame Advance a lot because I can't do Shift + [<] + Arrow keys + 0 >_>
EDIT I now have a USB controller, yay! Does anyone know how I can set my buttons to do stuff like load and save states in FCEU?
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www.youtube.com/noooodl (That's right, 4 o's)