text: /***************************************************************************
  
      Bally/Sente SAC-1 system
  
      driver by Aaron Giles
  
  ***************************************************************************/
  
  
  #define BALSENTE_MASTER_CLOCK	(20000000)
  #define BALSENTE_CPU_CLOCK		(BALSENTE_MASTER_CLOCK / 16)
  #define BALSENTE_PIXEL_CLOCK	(BALSENTE_MASTER_CLOCK / 4)
  #define BALSENTE_HTOTAL			(0x140)
  #define BALSENTE_HBEND			(0x000)
  #define BALSENTE_HBSTART		(0x100)
  #define BALSENTE_VTOTAL			(0x108)
  #define BALSENTE_VBEND			(0x010)
  #define BALSENTE_VBSTART		(0x100)
  
  
  /*----------- defined in machine/balsente.c -----------*/
  
  extern UINT8 balsente_shooter;
  extern UINT8 balsente_shooter_x;
  extern UINT8 balsente_shooter_y;
  extern UINT8 balsente_adc_shift;
  extern UINT16 *shrike_shared;
  extern UINT16 *shrike_io;
  
  MACHINE_RESET( balsente );
  
  void balsente_noise_gen(int chip, int count, short *buffer);
  
  WRITE8_HANDLER( balsente_random_reset_w );
  READ8_HANDLER( balsente_random_num_r );
  
  WRITE8_HANDLER( balsente_rombank_select_w );
  WRITE8_HANDLER( balsente_rombank2_select_w );
  
  WRITE8_HANDLER( balsente_misc_output_w );
  
  READ8_HANDLER( balsente_m6850_r );
  WRITE8_HANDLER( balsente_m6850_w );
  
  READ8_HANDLER( balsente_m6850_sound_r );
  WRITE8_HANDLER( balsente_m6850_sound_w );
  
  INTERRUPT_GEN( balsente_update_analog_inputs );
  READ8_HANDLER( balsente_adc_data_r );
  WRITE8_HANDLER( balsente_adc_select_w );
  
  READ8_HANDLER( balsente_counter_8253_r );
  WRITE8_HANDLER( balsente_counter_8253_w );
  
  READ8_HANDLER( balsente_counter_state_r );
  WRITE8_HANDLER( balsente_counter_control_w );
  
  WRITE8_HANDLER( balsente_chip_select_w );
  WRITE8_HANDLER( balsente_dac_data_w );
  WRITE8_HANDLER( balsente_register_addr_w );
  
  READ8_HANDLER( nstocker_port2_r );
  WRITE8_HANDLER( spiker_expand_w );
  READ8_HANDLER( spiker_expand_r );
  READ8_HANDLER( grudge_steering_r );
  
  READ8_HANDLER( shrike_shared_6809_r );
  WRITE8_HANDLER( shrike_shared_6809_w );
  
  READ16_HANDLER( shrike_io_68k_r );
  WRITE16_HANDLER( shrike_io_68k_w );
  
  /*----------- defined in video/balsente.c -----------*/
  
  VIDEO_START( balsente );
  VIDEO_UPDATE( balsente );
  
  WRITE8_HANDLER( balsente_videoram_w );
  WRITE8_HANDLER( balsente_paletteram_w );
  WRITE8_HANDLER( balsente_palette_select_w );
  WRITE8_HANDLER( shrike_sprite_select_w );
  