INT 21 u - Named Pipes - LOCAL DosQNmPHandState                                 
	AX = 5F33h
	BX = handle
Return: CF clear if successful
	    AH = pipe mode bit mask (see #01702)
	    AL = maximum number of instances
	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=5F32h,AX=5F34h


Bitfields for Named Pipes pipe mode:
Bit(s)	Description	(Table 01702)
 7	set if nonblocking, clear if blocking
 6	set if server end, clear if client end
 2	set if write in message mode, clear if write in byte mode
 0	set if read in message mode, clear if read in byte mode