@backstander @OreoLover Or you can use @meleu 's excellent tool that already do this without ever needing to go in to the Retroarch controller configuration.

You can find it here

@mediamogul I did this and worked great thanks for the direction to the right place. What I wanted to do for Mario 1,2,3 was set the controls the same as Super Mario World. It's a little difficult playing original NES Mario Bros with a SNES controller, since the buttons aren't horizontal.

@soonerdoc

I've just been playing 'Congo Bongo' with that control scheme and that game is still unreasonably hard due only to that odd isometric view. Fun fact; Ikegami Co. Ltd., the company that created 'Congo Bongo' was the same company subcontracted by Nintendo to shadow develop the original 'Donkey Kong'. Nintendo had what was to be an ongoing distribution deal with them, which Nintendo broke after they reverse engineered the DK hardware so that they could distribute 'Donkey Kong Jr.' on their own.

The whole thing was settled privately out of court, but it is strongly believed that the reason Nintendo has never since released the original arcade version of 'Donkey Kong' in any way is because they likely don't have the distribution rights to do so, Much like Disney/Lucasfilm Ltd. doesn't have the distribution rights to the original 'Star Wars' film. It's also funny when you think about it that Ikegami Co. Ltd. would turn around and sell 'Congo Bongo', a clone of Nintendo's most popular game at the time about a guy climbing platforms while dodging projectiles thrown by a giant gorilla, to what would ultimately become Nintendo's biggest rival throughout the 90s, SEGA.

That's great thank you! thanks for the info.

I remapped the buttons and it worked fine but like you say, it kinda screws up the other settings for up,down,left,right....so....I've reverted back to up and down on the games list! thanks for the heads up tho, really appreciate it.

Yea I was wracking my brain on it. I didn't DO anything to make it stop working. The only thing I can think of is maybe I somehow corrupted the settings when I was trying to get the Atari800 emulator working. Either that, or the Duke Nukem 3D port (which is awesome that it runs, but I can't get the mouse/keyboard combo to work right with it. It's either too sensitive or not enough). By replacing the new configs with working old ones, I think it just fixed itself, although erasing and recreate the various config files might have had something to do with it to.

@meleu I changed the emulator from Snes9x 2002 7.2.0 to Snes9x 2005 v1.36 and I do have core options now. Thanks

Any news on this? Same problem here. Any other controller that is working better?

in fact, config per core is depreciated in retroarch. it's not in the latest builds so i guess will be gone from later versions of retropie.