Int 2F Fn 6284  U - Pc Tools V8 Datamon, V9+ Dprotect - ???                [v]

   AX = 6284h
   BX = 0004h
   CX = 0004h

Return: AX = 5555h
   BX = ??? (0800h)
   CX = ??? (FCCCh for v8, FCCBh for v9)