Bios is just for some games to play. My experience with FPse is that it has virtual memory cards as well as a quick save/load. Every game has its own virtual memory card and you just save in game like normal.
Quick save works by pulling up the menu mid-game and quick saving to a free slot. I believe the quick slots are limited to a certain number and contains like 20 total for all games
Sent from my Galaxy Nexus using xda premium