I got a Raspberry Pi Retropie kit with everything loaded and ready for me to just get ROMS and play.
I am having issues with saving though. I use USB SNES controllers and was told pressing select and the R button will save. This works while playing Mario on NES, but when I try to save an SNES game nothing happens.
Have tried on Donkey Kong, Theme Park and B.O.B so far.
don’t know if you got your issue fixed yet or not, I am new to the raspberry pi, I would venture to say that sounds like a config issue though. I would be searching how to edit the configuration file and map the save state function (maybe also the select and load state functions as well)
also, using a SNES controller leaves you limited in what games/systems you can play if you were to set up a newer controller like an xbox or playstation controller you could have more buttons for other functions