Int 2F Fn 4E53  - Silvernet V2+ - Installation Check                       [N]

   AX = 4E53h ("NS")
   BL = 00h (function "installation check")
   BH = module ID (see below)

Return: AX = 0000h if specified module installed
   BX = 4E53h if installed
Program: SilverNET is an SMB-compatible peer-to-peer NOS for DOS or
     Windows systems, by Net-Source, Inc. of Santa Clara, CA.

See Also: AX=4E53h/BL=01h,AX=4E53h/BL=02h,AX=B800h,AX=B809h

Values for module ID:
 01h   SilverCACHE
 02h   Workstation
 03h   NetBIOS
 04h   Peer
 20h   NS Share
 80h   NetWare help TSR