INT 21 - Novell NetWare - BINDERY SERVICES - CLOSE BINDERY
        AH = E3h subfn 44h
        DS:SI -> request buffer (see below)
        ES:DI -> reply buffer (see below)
Return: AL = status
            00h successful
Note:   this function is supported by Advanced NetWare 1.0+ and Alloy NTNX

Format of request buffer:
Offset  Size    Description
 00h    WORD    0001h (length of following data)
 02h    BYTE    44h (subfunction "Close Bindery")

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