INT 63 - BW-TCP - TCPIP.SYS - SET DEFAULT ??? HANDLER AH = 08h DS:BX -> DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. containing IP(Internet Protocol) The lower level (transport layer) of the TCP/IP protocol suite. See also TCP, TCP/IP. address Return: CF clear if successful CF set on error ???