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

    Gyruss

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

#include "sound/discrete.h"

class gyruss_state : public driver_device
{
public:
	gyruss_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_subcpu(*this, "sub"),
		m_audiocpu(*this, "audiocpu"),
		m_audiocpu_2(*this, "audio2"),
		m_discrete(*this, "discrete"),
		m_colorram(*this, "colorram"),
		m_videoram(*this, "videoram"),
		m_flipscreen(*this, "flipscreen"),
		m_spriteram(*this, "spriteram")
	{ }

	/* devices/memory pointers */
	required_device<cpu_device> m_maincpu;
	required_device<cpu_device> m_subcpu;
	required_device<cpu_device> m_audiocpu;
	required_device<cpu_device> m_audiocpu_2;
	required_device<discrete_device> m_discrete;
	required_shared_ptr<UINT8> m_colorram;
	required_shared_ptr<UINT8> m_videoram;
	required_shared_ptr<UINT8> m_flipscreen;
	required_shared_ptr<UINT8> m_spriteram;

	tilemap_t *m_tilemap;
	UINT8 m_master_nmi_mask;
	UINT8 m_slave_irq_mask;

	DECLARE_WRITE8_MEMBER(gyruss_irq_clear_w);
	DECLARE_WRITE8_MEMBER(gyruss_sh_irqtrigger_w);
	DECLARE_WRITE8_MEMBER(gyruss_i8039_irq_w);
	DECLARE_WRITE8_MEMBER(master_nmi_mask_w);
	DECLARE_WRITE8_MEMBER(slave_irq_mask_w);
	DECLARE_WRITE8_MEMBER(gyruss_spriteram_w);
	DECLARE_READ8_MEMBER(gyruss_scanline_r);
	DECLARE_READ8_MEMBER(gyruss_portA_r);
	DECLARE_WRITE8_MEMBER(gyruss_dac_w);
	DECLARE_WRITE8_MEMBER(gyruss_filter0_w);
	DECLARE_WRITE8_MEMBER(gyruss_filter1_w);
	DECLARE_DRIVER_INIT(gyruss);
	TILE_GET_INFO_MEMBER(gyruss_get_tile_info);
	virtual void machine_start();
	virtual void video_start();
	virtual void palette_init();
	UINT32 screen_update_gyruss(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
};


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