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