INT D4 - PC-MOS/386 v5.01 - IDENTIFY LOAD ADDRESS OF DEVICE DRIVER LOCATION     
	AH = 25h
	DX = driver's CS value
Return: AX = segment address of driver in system memory pool
	    (0000h if the driver is not within the system memory pool)
Program: PC-MOS/386 is a multitasking/multiuser MS-DOS-compatible operating
	  system by The Software Link, Inc.