Nintendo DS

Nintendo DS games run on a bundled Drastic emulator. Put your ROMs in Roms/Nintendo DS (NDS)/.

Controls

The face buttons, D-pad, shoulders, START and SELECT map to the DS as you would expect. They follow the device-wide Button Layout setting. Under the Xbox layout the bottom button is the DS A, in games and in the Drastic menu alike.

On top of that:

Button	Action
MENU	Open the Drastic menu (save states, options, controls, cheats).
L2	Turn stylus mode on or off (see below).
R2	Swap which DS screen is the large one.
SELECT + Left / Right	Cycle the screen layout (how the two DS screens are arranged on the device's single screen).
SELECT + Y	Cycle the theme, or the stylus image while stylus mode is on.

Stylus mode

Many DS games need the touch screen. Press L2 to turn stylus mode on. A pen appears over the touch screen, and the D-pad drives it instead of the game.

Button	Action
D-pad or left stick	Move the pen. It speeds up the longer you hold a direction.
A	Tap at the pen's position. Hold A while moving to drag.
SELECT + Y	Cycle the pen image.
L2	Turn stylus mode off again.

The other buttons keep going to the game, so you can play with the pen out.

Turn stylus mode off before opening the Drastic menu

While stylus mode is on, MENU does nothing. Press L2 first to leave stylus mode, then MENU to open the Drastic menu.

Can't see the pen?

Nudge the D-pad. The pen hides itself after a moment of stillness.

More detail

The pen is only drawn when it moves. The pen image is the same on every device and is remembered across launches.