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

    Sun Electronics Kangaroo hardware

    driver by Ville Laitinen

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

class kangaroo_state : public driver_device
{
public:
	kangaroo_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_video_control(*this, "video_control"){ }

	/* memory pointers */
	required_shared_ptr<UINT8> m_video_control;

	/* video-related */
	UINT32       *m_videoram;

	/* misc */
	UINT8        m_mcu_clock;
	DECLARE_READ8_MEMBER(mcu_sim_r);
	DECLARE_WRITE8_MEMBER(mcu_sim_w);
	DECLARE_WRITE8_MEMBER(kangaroo_coin_counter_w);
	DECLARE_WRITE8_MEMBER(kangaroo_videoram_w);
	DECLARE_WRITE8_MEMBER(kangaroo_video_control_w);
	virtual void machine_start();
	virtual void machine_reset();
	virtual void video_start();
	DECLARE_MACHINE_START(kangaroo_mcu);
	UINT32 screen_update_kangaroo(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
};