    m_column = x;
    m_page = y;
    commandStart();
    this->send(0xB0 | y); // set page
    this->send( ((x + m_seg_offset)       & 0x0f )       ); // low column
    this->send((((x + m_seg_offset) >> 4) & 0x07 ) | 0x10); // high column
    if ( m_dc >= 0 )
    {
        setDataMode(1);
    }
    else
    {
        this->stop();
        this->start();
        this->send(0x40);
    }
