There are some system related functions, such as quitting games, and resetting the console that require you to use key combinations on your gamepad. Here is a list of those, and a brief description.
Exit game - Select + Start
This combination will bring you back to the Nerdbox
main menu to choose a new game.
Reset game - Select + B
This combination will reset the game. This is like
hitting the reset button on the actual console.
Save state - Select + Right Shoulder
This combination will save the game state,
allowing you to come back to this exact moment in the game.
Load state - Select + Left Shoulder
This combination will load the previously
saved game state, allowing you to come back to this exact moment in the game.
Save slot increase - Select + Right
This combination will change which slot
the save states are being saved to. Use it to manage your save states.
Save slot decrease - Select + Left
This combination will change which slot
the save states are being saved to. Use it to manage your save states.
Switch side of Famicom Disk games - Left Shoulder
Most Famicom Disk System
games require you to flip the disk over. You can do this in Nerdbox by tapping the Left
Shoulder button when asked.