Int 17 Fn 03  - Dmp Print Spooler V2.03 - Installation Check               [c]

   AH = 03h
   BX = 5A00h

Return: AX = 5ACBh
   DI = 0000h
   ES = DMP code segment (also data segment)
Program: DMP is a Printer driver/spooler, by DMP (USA), available on the
     PCTODAY disk, volume 10, March 1991