Int 21 Fn B4  U - Novell Netware - "attachhandle"                          [N]

   AH = B4h
   DS:SI -> input buffer (see #1490)

Return: AX = DOS file handle or return code

Note:  this is an interface provided by NetWare to give DOS file access to
     NetWare files on non-DOS systems such as Macintosh, OS/2, and Unix

See Also: AX=E909h

Format of Novell NetWare input buffer:
Offset Size    Description (Table 1490)
 00h   BYTE    "WorkFileServer"
 01h   BYTE    access code
 02h   DWORD   "OpenHandle"
 06h   WORD    "OpenHandleCount"
 08h   DWORD   "OpenFileSize"

Note:  the six bytes at 02h-07h appear to be the six-byte NetWare handle
     returned by AX=E909h