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/***************************************************************************

    Exidy Car Polo hardware

    driver by Zsolt Vasvari

****************************************************************************/

#include "machine/6821pia.h"
#include "machine/7474.h"

class carpolo_state : public driver_device
{
public:
	carpolo_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_alpharam(*this, "alpharam"),
		m_spriteram(*this, "spriteram"){ }

	required_shared_ptr<UINT8> m_alpharam;
	required_shared_ptr<UINT8> m_spriteram;
	UINT8 m_ball_screen_collision_cause;
	UINT8 m_car_ball_collision_x;
	UINT8 m_car_ball_collision_y;
	UINT8 m_car_car_collision_cause;
	UINT8 m_car_goal_collision_cause;
	UINT8 m_car_ball_collision_cause;
	UINT8 m_car_border_collision_cause;
	UINT8 m_priority_0_extension;
	UINT8 m_last_wheel_value[4];
	device_t *m_ttl74148_3s;
	device_t *m_ttl74153_1k;
	ttl7474_device *m_ttl7474_2s_1;
	ttl7474_device *m_ttl7474_2s_2;
	ttl7474_device *m_ttl7474_2u_1;
	ttl7474_device *m_ttl7474_2u_2;
	ttl7474_device *m_ttl7474_1f_1;
	ttl7474_device *m_ttl7474_1f_2;
	ttl7474_device *m_ttl7474_1d_1;
	ttl7474_device *m_ttl7474_1d_2;
	ttl7474_device *m_ttl7474_1c_1;
	ttl7474_device *m_ttl7474_1c_2;
	ttl7474_device *m_ttl7474_1a_1;
	ttl7474_device *m_ttl7474_1a_2;
	bitmap_ind16 *m_sprite_sprite_collision_bitmap1;
	bitmap_ind16 *m_sprite_sprite_collision_bitmap2;
	bitmap_ind16 *m_sprite_goal_collision_bitmap1;
	bitmap_ind16 *m_sprite_goal_collision_bitmap2;
	bitmap_ind16 *m_sprite_border_collision_bitmap;
	DECLARE_READ8_MEMBER(carpolo_ball_screen_collision_cause_r);
	DECLARE_READ8_MEMBER(carpolo_car_ball_collision_x_r);
	DECLARE_READ8_MEMBER(carpolo_car_ball_collision_y_r);
	DECLARE_READ8_MEMBER(carpolo_car_car_collision_cause_r);
	DECLARE_READ8_MEMBER(carpolo_car_goal_collision_cause_r);
	DECLARE_READ8_MEMBER(carpolo_car_ball_collision_cause_r);
	DECLARE_READ8_MEMBER(carpolo_car_border_collision_cause_r);
	DECLARE_READ8_MEMBER(carpolo_interrupt_cause_r);
	DECLARE_WRITE8_MEMBER(carpolo_ball_screen_interrupt_clear_w);
	DECLARE_WRITE8_MEMBER(carpolo_car_car_interrupt_clear_w);
	DECLARE_WRITE8_MEMBER(carpolo_car_goal_interrupt_clear_w);
	DECLARE_WRITE8_MEMBER(carpolo_car_ball_interrupt_clear_w);
	DECLARE_WRITE8_MEMBER(carpolo_car_border_interrupt_clear_w);
	DECLARE_WRITE8_MEMBER(carpolo_timer_interrupt_clear_w);
	DECLARE_DRIVER_INIT(carpolo);
};


/*----------- defined in machine/carpolo.c -----------*/

extern const pia6821_interface carpolo_pia0_intf;
extern const pia6821_interface carpolo_pia1_intf;

void carpolo_74148_3s_cb(device_t *device);

WRITE_LINE_DEVICE_HANDLER( carpolo_7474_2s_1_q_cb );
WRITE_LINE_DEVICE_HANDLER( carpolo_7474_2s_2_q_cb );
WRITE_LINE_DEVICE_HANDLER( carpolo_7474_2u_1_q_cb );
WRITE_LINE_DEVICE_HANDLER( carpolo_7474_2u_2_q_cb );

MACHINE_START( carpolo );
MACHINE_RESET( carpolo );



INTERRUPT_GEN( carpolo_timer_interrupt );


void carpolo_generate_car_car_interrupt(running_machine &machine, int car1, int car2);
void carpolo_generate_ball_screen_interrupt(running_machine &machine, UINT8 cause);
void carpolo_generate_car_goal_interrupt(running_machine &machine, int car, int right_goal);
void carpolo_generate_car_ball_interrupt(running_machine &machine, int car, int car_x, int car_y);
void carpolo_generate_car_border_interrupt(running_machine &machine, int car, int horizontal_border);


/*----------- defined in video/carpolo.c -----------*/

PALETTE_INIT( carpolo );
VIDEO_START( carpolo );
SCREEN_UPDATE_IND16( carpolo );
SCREEN_VBLANK( carpolo );