text: #ifndef DS2404_H
  #define DS2404_H
  
  void DS2404_init(int ref_year, int ref_month, int ref_day);
  void DS2404_load(mame_file *file);
  void DS2404_save(mame_file *file);
  
  /* 1-wire interface reset */
  WRITE8_HANDLER( DS2404_1W_reset_w );
  
  /* 3-wire interface reset  */
  WRITE8_HANDLER( DS2404_3W_reset_w );
  
  READ8_HANDLER( DS2404_data_r );
  WRITE8_HANDLER( DS2404_data_w );
  WRITE8_HANDLER( DS2404_clk_w );
  
  #endif
  