class sauro_state : public driver_device
{
public:
	sauro_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_spriteram(*this, "spriteram"),
		m_videoram(*this, "videoram"),
		m_colorram(*this, "colorram"),
		m_videoram2(*this, "videoram2"),
		m_colorram2(*this, "colorram2"){ }

	required_shared_ptr<UINT8> m_spriteram;
	required_shared_ptr<UINT8> m_videoram;
	required_shared_ptr<UINT8> m_colorram;
	optional_shared_ptr<UINT8> m_videoram2;
	optional_shared_ptr<UINT8> m_colorram2;

	tilemap_t *m_bg_tilemap;
	tilemap_t *m_fg_tilemap;
	UINT8 m_palette_bank;
	DECLARE_WRITE8_MEMBER(sauro_sound_command_w);
	DECLARE_READ8_MEMBER(sauro_sound_command_r);
	DECLARE_WRITE8_MEMBER(sauro_coin1_w);
	DECLARE_WRITE8_MEMBER(sauro_coin2_w);
	DECLARE_WRITE8_MEMBER(flip_screen_w);
	DECLARE_WRITE8_MEMBER(tecfri_videoram_w);
	DECLARE_WRITE8_MEMBER(tecfri_colorram_w);
	DECLARE_WRITE8_MEMBER(tecfri_videoram2_w);
	DECLARE_WRITE8_MEMBER(tecfri_colorram2_w);
	DECLARE_WRITE8_MEMBER(tecfri_scroll_bg_w);
	DECLARE_WRITE8_MEMBER(sauro_palette_bank_w);
	DECLARE_WRITE8_MEMBER(sauro_scroll_fg_w);
};


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


VIDEO_START( sauro );
VIDEO_START( trckydoc );

SCREEN_UPDATE_IND16( sauro );
SCREEN_UPDATE_IND16( trckydoc );
