Int 14 Fn AF00  - 3com Bapi Serial I/o - Installation Check                [S]

   AX = AF00h
   BX = AAAAh

Return: AX = AF01h if installed
       BH = protocol type (if BX=AAAAh on entry)
       01h NetManage TCP/IP
       BL = version for protocol type (if BX=AAAAh on entry)

Note:  early versions of the BAPI and the ROM BIOS simply destroy AX; this
     behavior is used to determine whether the newer functions (AH=B0h,
     AH=B1h,etc) are available

See Also: AH=A0h"BAPI"