private String getStatusMessage(final int status)
    {
    	switch (status)
    	{
    	case 0x00:  return "OK";
    	case 0x01:  return "invalid/unsupported command";
    	case 0x02:  return "no memory on target";
    	case 0x03:  return "malformed data in request";
    	case 0x64:  return "invalid session ID";
    	case 0x65:  return "invalid data length";
    	case 0x69:  return "unsupported protocol revision";
    	}
    	return "<unknown>";
    }