INT 7C - SK-UPPS Data Link Interface API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running.  Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. - DISABLE PROTOCOL
	AX = 0008h
	BX = protocol ID (see #03849)
Return: AX = completion code (see #03846)
Note:	the DLI will handle any Mbufs given to TRANSMIT FRAME (AX=0006h) as if
	  they had been given to TRANSMIT FRAME RELEASE (AX=0013h).
	all multicast addresses registered for this protocol will be disabled.
	after this function returns, the protocol's Upcall routines will no
	  longer be called.
SeeAlso: AX=0007h,AX=000Bh