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

    Street Fighter

*************************************************************************/
#include "sound/msm5205.h"

class sf_state : public driver_device
{
public:
	sf_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_videoram(*this, "videoram"),
		m_objectram(*this, "objectram"),
		m_maincpu(*this, "maincpu"),
		m_audiocpu(*this, "audiocpu"),
		m_msm1(*this, "msm1"),
		m_msm2(*this, "msm2"),
		m_gfxdecode(*this, "gfxdecode"),
		m_palette(*this, "palette"){ }

	/* memory pointers */
	required_shared_ptr<UINT16> m_videoram;
	required_shared_ptr<UINT16> m_objectram;
//  UINT16 *    m_paletteram;    // currently this uses generic palette handling

	/* video-related */
	tilemap_t     *m_bg_tilemap;
	tilemap_t     *m_fg_tilemap;
	tilemap_t     *m_tx_tilemap;
	int         m_sf_active;
	UINT16      m_bgscroll;
	UINT16      m_fgscroll;

	/* devices */
	required_device<cpu_device> m_maincpu;
	required_device<cpu_device> m_audiocpu;
	DECLARE_READ16_MEMBER(dummy_r);
	DECLARE_WRITE16_MEMBER(sf_coin_w);
	DECLARE_WRITE16_MEMBER(soundcmd_w);
	DECLARE_WRITE16_MEMBER(protection_w);
	DECLARE_READ16_MEMBER(button1_r);
	DECLARE_READ16_MEMBER(button2_r);
	DECLARE_WRITE8_MEMBER(sound2_bank_w);
	DECLARE_WRITE16_MEMBER(sf_videoram_w);
	DECLARE_WRITE16_MEMBER(sf_bg_scroll_w);
	DECLARE_WRITE16_MEMBER(sf_fg_scroll_w);
	DECLARE_WRITE16_MEMBER(sf_gfxctrl_w);
	DECLARE_WRITE8_MEMBER(msm1_5205_w);
	DECLARE_WRITE8_MEMBER(msm2_5205_w);
	TILE_GET_INFO_MEMBER(get_bg_tile_info);
	TILE_GET_INFO_MEMBER(get_fg_tile_info);
	TILE_GET_INFO_MEMBER(get_tx_tile_info);
	virtual void machine_start();
	virtual void machine_reset();
	virtual void video_start();
	UINT32 screen_update_sf(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	inline int sf_invert( int nb );
	void draw_sprites( bitmap_ind16 &bitmap,const rectangle &cliprect );
	void write_dword( address_space &space, offs_t offset, UINT32 data );
	required_device<msm5205_device> m_msm1;
	required_device<msm5205_device> m_msm2;
	required_device<gfxdecode_device> m_gfxdecode;
	required_device<palette_device> m_palette;
};