INT 21 - Novell NetWare - DIRECTORY SERVICES - GET DIRECTORY PATH
        AH = E2h subfn 01h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status (00h,9Bh) (see AH=E2h/SF=00h)
Note:   this function is supported by NetWare 4.0+, Advanced NetWare 1.0+, and
          Alloy NTNX
SeeAlso: AH=E2h/SF=03h,AH=E2h/SF=1Ah,AH=E9h

Format of request buffer:
Offset  Size    Description
 00h    WORD    0002h (length of following data)
 02h    BYTE    01h (subfunction "Get Directory Path")
 03h    BYTE    directory handle

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) length of following data buffer
 02h    BYTE    length of directory path (01h-FFh)
 03h  N BYTEs   full directory path including volume