Int 2F Fn C000  U - Wang_er.com - Installation Check                       [U]

   AX = C000h

Return: AL = FFh if installed
       ES = segment of resident code
Program: WANG_ER is a TSR from Compaq which permits Compaq systems equipped
     with 3-mode floppy drives to read Wang document diskettes
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number

Note:  The installation check is completed by comparing the resident code
     with the copy in the transient program