INT 2F - Novell ODI Link Support Layer (LSL.COM) - INSTALLATION CHECK
        AX = C000h
Return: AL = FFh
        ES:BX -> FAR entry point
        ES:SI -> signature string "LINKSUP$"
Note:   LSL.COM may use any multiplex number between C0h and FFh; it searches
          for itself in that range, and installs using the first free multiplex
          number in the range if not already loaded.

Call entry point with:
        BX = 0002h get entry points
                ES:SI -> buffer for entry point record (see below)
                Return: ES:SI buffer filled

Format of entry point record:
Offset  Size    Description
 00h    DWORD   pointer to ??? entry point in LSL
 04h    DWORD   pointer to ??? entry point in LSL