Int 2F Fn 118F  - LAN Manager Enhanced DOS - Doswriteasynchnmpipe          [N]

   AX = 118Fh
   DS:SI -> stack frame (see below)

Return: CF clear if successful
   CF set if error
       AX = error code

See Also: AX=1186h,AX=1191h,INT 21/AX=5F3Ah

Format of DosReadAsynchNmPipe stack frame:
Offset Size    Description
 00h   DWORD   -> number of bytes read
 04h   WORD    Size of buffer
 06h   DWORD   -> buffer
 0Ah   DWORD   -> return code
 0Eh   DWORD   function to call on completion as function( char far *buffer )
 12h   WORD    handle