Only PCE.emu is currently available for the PS3. You'll need a jailbroken homebrew-capable console (tested on 3.55).
- D-pad : navigate menus (Up & Down), Left to go up a directory in file picker, Right to select highlighted entry
- Cross : confirm/select menu entry
- Circle : cancel menu entry/go back
- L2 : open/dismiss menu
- R2 : Fast-forward