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

    Taito Air System

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

enum { TAITOAIR_FRAC_SHIFT = 16, TAITOAIR_POLY_MAX_PT = 16 };

struct taitoair_spoint {
	INT32 x, y;
};

struct taitoair_poly {
	struct taitoair_spoint p[TAITOAIR_POLY_MAX_PT];
	int pcount;
	int col;
};


class taitoair_state : public driver_device
{
public:
	taitoair_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		  m_m68000_mainram(*this, "m68000_mainram"),
		  m_line_ram(*this, "line_ram"),
		  m_dsp_ram(*this, "dsp_ram"),
		  m_paletteram(*this, "paletteram"),
		  m_gradram(*this, "gradram"),
		  m_backregs(*this, "backregs") { }

	/* memory pointers */
	required_shared_ptr<UINT16> m_m68000_mainram;
	required_shared_ptr<UINT16> m_line_ram;
	required_shared_ptr<UINT16> m_dsp_ram;      	// Shared 68000/TMS32025 RAM
	required_shared_ptr<UINT16> m_paletteram;

	/* video-related */
	taitoair_poly  m_q;

	/* misc */
	int           m_dsp_hold_signal;
	INT32         m_banknum;

	/* devices */
	cpu_device *m_audiocpu;
	device_t *m_dsp;
	device_t *m_tc0080vco;

	required_shared_ptr<UINT16> m_gradram;
	required_shared_ptr<UINT16> m_backregs;

	bitmap_ind16 *m_framebuffer[2];

    /* 3d info */
    INT16 m_frustumLeft;
    INT16 m_frustumBottom;
    INT16 m_eyecoordBuffer[4];  /* homogeneous */

    //bitmap_ind16 *m_buffer3d;
	DECLARE_WRITE16_MEMBER(system_control_w);
	DECLARE_READ16_MEMBER(lineram_r);
	DECLARE_WRITE16_MEMBER(lineram_w);
	DECLARE_READ16_MEMBER(dspram_r);
	DECLARE_WRITE16_MEMBER(dspram_w);
	DECLARE_READ16_MEMBER(dsp_HOLD_signal_r);
	DECLARE_WRITE16_MEMBER(dsp_HOLDA_signal_w);
	DECLARE_WRITE16_MEMBER(airsys_paletteram16_w);
	DECLARE_WRITE16_MEMBER(airsys_gradram_w);
	DECLARE_READ16_MEMBER(stick_input_r);
	DECLARE_READ16_MEMBER(stick2_input_r);
	DECLARE_WRITE8_MEMBER(sound_bankswitch_w);
	DECLARE_WRITE16_MEMBER(dsp_flags_w);
	DECLARE_WRITE16_MEMBER(dsp_x_eyecoord_w);
	DECLARE_WRITE16_MEMBER(dsp_y_eyecoord_w);
	DECLARE_WRITE16_MEMBER(dsp_z_eyecoord_w);
	DECLARE_WRITE16_MEMBER(dsp_frustum_left_w);
	DECLARE_WRITE16_MEMBER(dsp_frustum_bottom_w);
	DECLARE_WRITE16_MEMBER(dsp_rasterize_w);
	DECLARE_READ16_MEMBER(dsp_x_return_r);
	DECLARE_READ16_MEMBER(dsp_y_return_r);
};


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

SCREEN_UPDATE_IND16( taitoair );
VIDEO_START( taitoair );