Emulator

Quick save and quick load keys are not usable under OSX using Apple keyboards.
To use the functions keys you have to press the "fn" key + the corresponding function key (F1, F2, etc...).
When pressing fn under OSX, dolphin brings an open box, preventing you from doing the hotkey.
It can be avoided for quick saving if you really quickly and simultaneously push fn+shit+F1, but this trick doesn't work at all for loading, forcing you to do it from the menu.

I suggest that the open dialog be triggered by an other key than fn which should be left as a switch key.