RetroPie: Saving Games in Retroarch - In Game - Part 1

This shows how to use 'save game' files within RetroPie using RetroArch emulators. This is emulating exactly how the original hardware would deal with save game files.

Part 2 is here:
http://dai.ly/x2hupx2

Some more details here:
http://blog.petrockblock.com/forums/topic/how-to-save-games-in-retropie-retroarch/