INT 21 - Novell NetWare - DIRECTORY SERVICES - ALLOC PERMANENT DIRECTORY HANDLE
        AH = E2h subfn 12h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status (00h,98h,9Ch) (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=00h,AH=E2h/SF=13h,AH=E2h/SF=14h

Format of request buffer:
Offset  Size    Description
 00h    WORD    length of following data (max 103h)
 02h    BYTE    12h (subfunction "Alloc Permanent Directory Handle")
 03h    BYTE    directory handle
 04h    BYTE    drive ('A'-'Z')
 05h    BYTE    length of directory path
 06h  N BYTEs   directory path

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 0002h (size of following results buffer)
 02h    BYTE    new directory handle
 03h    BYTE    effective directory rights (see AH=E2h/SF=01h)

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