Description
Lets you set what input device is to be used as a positional controller. This will override the commands -mouse, -joystick etc...
Example
mame <gamename> -positional_device joystick
Command Format
<gamename> -positional_device <device>. The device can be keyboard, mouse, joystick, lightgun or none.. The example will set the default device if a game uses a positional controller to your joystick.
MAME's Default Setting
keyboard