INT 61 - PCIBM PC/TCP(Transmission Control Protocol) A higher level (session layer) of the TCP/IP protocol suite.  See also IP, TCP/IP. kernel v2.05+ - "disable_async" - DISABLE ASYNCHRONOUS HANDLERS
	AH = 11h
Return: CF clear
	AX = previous state
	    0000h async calls were already disabled
	    else  async calls were enabled
SeeAlso: INT 61"FTP(File Transfer Protocol)  The standard protocol for copying files from one machine to another on a TCP/IP (Internet) network.  Also the program of the same name with which a user may transfer files. Software",INT 61/AH=12h