text: /***************************************************************************
  
  	Midway/Williams Audio Boards
  
  ****************************************************************************/
  
  MACHINE_DRIVER_EXTERN( williams_cvsd_sound );
  MACHINE_DRIVER_EXTERN( williams_adpcm_sound );
  MACHINE_DRIVER_EXTERN( williams_narc_sound );
  
  void williams_cvsd_init(int cpunum, int pianum);
  void williams_cvsd_data_w(int data);
  void williams_cvsd_reset_w(int state);
  
  void williams_adpcm_init(int cpunum);
  void williams_adpcm_data_w(int data);
  void williams_adpcm_reset_w(int state);
  
  void williams_narc_init(int cpunum);
  void williams_narc_data_w(int data);
  void williams_narc_reset_w(int state);
  
  bool	mk_playing_mortal_kombat; /* For Mortal Kombat music hack. For Midway Y-Unit versions.*/
  bool	mk_playing_mortal_kombat_t; /* For Mortal Kombat music hack. For Midway T-Unit versions.*/
  bool	nba_jam_playing; /* For NBA Jam music samples. For Midway T-Unit versions.*/
  bool	nba_jam_title_screen;
  bool	nba_jam_select_screen;
  bool	nba_jam_intermission;
  bool	nba_jam_in_game;
  bool	nba_jam_boot_up;
  bool	nba_jam_playing_title_music;
  
  int		m_nba_last_offset;
  int		m_nba_start_counter;
  