I’m trying to get atari 2600 to use the analog stick on the ps3 controller, I’m just not sure what to put in /opt/retropie/configs/atari2600

I did figure out how to get into the retroarch menu during a game and change the mapping there. If I do that it lets me use either the dpad or the stick for directions in the game, but it doesn’t save the settings so I have to remap the up, down, left, and right to the analog stick everytime.

Any help would be appreciated!