Int 2F Fn 7AFF  - Novell Netware - Tbmi V1.1+ - Installation Check / Wind  [N]

   AX = 7AFFh
   BX = 0000h
   CX = 4E65h ("Ne")
   DX = 7457h ("tW")
   ES:DI -> Windows support procedure (see #2612)

Return: AL = FFh if installed
       CX = configured sockets (14h)
       DS:SI -> data table ???
       ES:DI -> IPX far call handler

Notes: for IPX/SPX this call reportedly returns DS:SI pointing to the table
     of pointers to service events queue head and tail
   this function is also supported by IPXODI; v2.12 does not change DS,
     but does set SI to an internal address

See Also: AX=7AFFh/BX=0001h

(Table 2612)
Values Windows support procedure called with:
   BP = function
       0001h Get ECB
       BX = socket number

       Return: ES:SI -> ECB or 0000h:0000h if none available
       0002h Count Listen ECBs
       AX = BX = socket

       Return: CX = number of listen ECBs for socket
               (must be >= 2 for SPX to work)
       0003h ???
       0004h Inform task switcher of ECB locations

       Note:   registers other than those listed above are equal
             to the values when IPX was called

Note:  the support function will not be called if IPX is called with BX
     bit 15 set