INT 21 u - Named Pipes - DosCallNmPipe                                          
	AX = 5F37h
	DS:SI -> DosCallNmPipe stack frame (see #01704)
Return: CF clear if successful
	    CX = bytes read
	CF set on error
	    AX = error code
Note:	this function was introduced by LAN Manager but is also supported by
	  the Novell DOS Named Pipe Extender, Banyan VINES, OS/2 Virtual DOS
	  Machines, and others
SeeAlso: AX=5F36h,AX=5F38h


Format of Named Pipes DosCallNmPipe stack frame:
Offset	Size	Description	(Table 01704)
 00h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	timeout
 04h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	-> bytes read WORD (not used!)
 08h	WORD	out buffer length
 0Ah	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	address of out buffer
 0Eh	WORD	in buffer length
 10h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	address of in buffer
 14h	DWORDDoubleword; four bytes.	 Commonly used to hold a 32-bit segment:offset or selector:offset address.	address of pipe name