Int 4F Fn 8200  - Common Access Method Scsi Interface Rev 2.3 - Installat  [d]

   AX = 8200h
   CX = 8765h
   DX = CBA9h

Return: AH = 00h if installed
       CX = 9ABCh
       DX = 5678h
       ES:DI -> "SCSI_CAM"

See Also: AX=8100h,INT 4B"Common Access Method"