protected AndXServerMessageBlock ( Configuration config, byte command, ServerMessageBlock andx ) {
        super(config, command);
        this.andx = andx;
        if ( andx != null ) {
            this.andxCommand = (byte) andx.getCommand();
        }
    }


    protected AndXServerMessageBlock ( Configuration config ) {
        this(config, null);
    }

    private int andxOffset          = 0;

    ServerMessageBlock andx = null;

    AndXServerMessageBlock() {
    }
    AndXServerMessageBlock( ServerMessageBlock andx ) {
        if (andx != null) {
            this.andx = andx;
            andxCommand = andx.command;
        }
    }

    int getBatchLimit( byte command ) {
        /* the default limit is 0 batched messages before this

            if (log.level >= 4) {
                do {
                    log.println( smb );
                } while (smb instanceof AndXServerMessageBlock &&
                        (smb = ((AndXServerMessageBlock)smb).andx) != null);
                if (log.level >= 6) {
                    Hexdump.hexdump( log, BUF, 4, n );
                }
            }

     * returns bytes read and not the number of words(but the
     * wordCount member DOES store the number of words)) we
     * actually read. Incedentally this is important to the
     * AndXServerMessageBlock class that needs to potentially
     * read in another smb's parameter words and bytes based on
     * information in it's andxCommand, andxOffset, ...etc.
     */ 

     * returns bytes read and not the number of words(but the
     * wordCount member DOES store the number of words)) we
     * actually read. Incedentally this is important to the
     * AndXServerMessageBlock class that needs to potentially
     * read in another smb's parameter words and bytes based on
     * information in it's andxCommand, andxOffset, ...etc.
     */