INT 21 - Novell NetWare - CONNECTION SERVICES - ENTER LOGIN AREA
        AH = E3h subfn 0Ah
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
Desc:   change the login directory for the calling workstation
Note:   this function is supported by NetWare 4.0+, Advanced NetWare 1.0+, and
          Alloy NTNX
SeeAlso: AH=E3h/SF=14h

Format of request buffer:
Offset  Size    Description
 00h    WORD    length of following data (max 102h)
 02h    BYTE    0Ah (subfunction "Enter Login Area")
 03h    BYTE    number of local drives
 04h    BYTE    length of subdirectory name (00h-FFh)
 05h  N BYTEs   name of subdirectory under SYS:LOGIN where to find the login
                utility

Format of reply buffer:
Offset  Size    Description
 00h    WORD    (call) 0000h (no data returned)