INT 64 U - BW-NFS - BWRPC - ???                                                 
	AH = 01h
	ES:BX -> ??? (at least 8 bytes)
	ES:BP -> DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address. ???
	???
Return: CF clear if successful
	    ???
	CF set on error
	    CX = 0000h
Range:	INT 4E to INT FD, selected by configuration
Notes:	the Beame&Whiteside TCP/IPThe protocol suite originally developed by DARPA for use on its ARPAnet network, which is now known as the Internet.  See also IP, TCP. protocol stack uses two consecutive
	  interrupts (62h and 63h by default); the BW-NFS client uses a third
	  consecutive interrupt (64h by default) if it is loaded
	the BWRPC installation check consists of determining the interrupt
	  vector assigned to it (two more than the value returned by reading
	  the ETHDEV27 device), and testing whether the word immediately
	  preceding the interrupt handler is 4257h ('BW')
SeeAlso: INT 62/AH=00h"ETHDEV",INT 63/AH=03h"BW-TCP",INT 63/AH=24h
Index:	installation checks;BWRPC