Int 14 Fn 56  U - Bwcom14 - Installation Check                             [S]

   AH = 56h

Return: CX = 0001h if installed
Program: BWCOM14 is a network serial port emulator (simulating a Hayes modem
     connected to the serial port) distributed as part of the
     Beame&Whiteside BW-NFS package

See Also: AH=57h,AH=58h