INT 2F - SilverNET v2+ - INSTALLATION CHECK                                     
	AX = 4E53h ("NS")
	BL = 00h (function "installation check")
	BH = module ID (see #02826)
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.
SeeAlso: AX=4E53h/BL=01h,AX=4E53h/BL=02h,AX=B800h,AX=B809h


(Table 02826)
Values for SilverNET module ID:
 01h	SilverCACHE
 02h	Workstation
 03h	NetBIOSOne of a number of low-level device-independent network interfaces; the other major interfaces are Novell's IPX and the Internet's IP (Internet Protocol, the lower-level portion of TCP/IP).
 04h	Peer
 20h	NS Share
 80h	NetWare help TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user.  The name comes from the name of the DOS function call used to remain in memory after termination.