NAME
	IND_SETMTYPE -- Set the current mouse port controller type

   FUNCTION
	This command sets the type of device at the mouse port, so
	the signals at the port may be properly interpreted.

   IO REQUEST
	io_Message	mn_ReplyPort set if quick I/O is not possible
	io_Device	preset by the call to OpenDevice
	io_Unit		preset by the call to OpenDevice
	io_Command	IND_SETMTYPE
	io_Flags	IOB_QUICK set if quick I/O is possible
	io_Length	1
	io_Data		the address of the byte variable describing
			the controller type, as per the equates in
			the gameport include file