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#include "sound/okiadpcm.h"

#define MCU_BUFFER_MAX 6

class renegade_adpcm_device;

class renegade_state : public driver_device
{
public:
	renegade_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_videoram(*this, "videoram"),
		m_videoram2(*this, "videoram2"),
		m_spriteram(*this, "spriteram"),
		m_maincpu(*this,"maincpu"),
		m_audiocpu(*this, "audiocpu"),
		m_mcu(*this, "mcu"),
		m_gfxdecode(*this, "gfxdecode"),
		m_palette(*this, "palette") { }

	UINT8 m_bank;
	int m_mcu_sim;
	int m_from_main;
	int m_from_mcu;
	int m_main_sent;
	int m_mcu_sent;
	UINT8 m_ddr_a;
	UINT8 m_ddr_b;
	UINT8 m_ddr_c;
	UINT8 m_port_a_out;
	UINT8 m_port_b_out;
	UINT8 m_port_c_out;
	UINT8 m_port_a_in;
	UINT8 m_port_b_in;
	UINT8 m_port_c_in;
	UINT8 m_mcu_buffer[MCU_BUFFER_MAX];
	UINT8 m_mcu_input_size;
	UINT8 m_mcu_output_byte;
	INT8 m_mcu_key;
	int m_mcu_checksum;
	const UINT8 *m_mcu_encrypt_table;
	int m_mcu_encrypt_table_len;
	int m_coin;
	required_shared_ptr<UINT8> m_videoram;
	required_shared_ptr<UINT8> m_videoram2;
	INT32 m_scrollx;
	tilemap_t *m_bg_tilemap;
	tilemap_t *m_fg_tilemap;
	required_shared_ptr<UINT8> m_spriteram;

	required_device<cpu_device> m_maincpu;
	DECLARE_WRITE8_MEMBER(sound_w);
	DECLARE_READ8_MEMBER(mcu_reset_r);
	DECLARE_WRITE8_MEMBER(mcu_w);
	DECLARE_READ8_MEMBER(mcu_r);
	DECLARE_WRITE8_MEMBER(bankswitch_w);
	DECLARE_WRITE8_MEMBER(renegade_coin_counter_w);
	void mcu_process_command();
	DECLARE_READ8_MEMBER(renegade_68705_port_a_r);
	DECLARE_WRITE8_MEMBER(renegade_68705_port_a_w);
	DECLARE_WRITE8_MEMBER(renegade_68705_ddr_a_w);
	DECLARE_READ8_MEMBER(renegade_68705_port_b_r);
	DECLARE_WRITE8_MEMBER(renegade_68705_port_b_w);
	DECLARE_WRITE8_MEMBER(renegade_68705_ddr_b_w);
	DECLARE_READ8_MEMBER(renegade_68705_port_c_r);
	DECLARE_WRITE8_MEMBER(renegade_68705_port_c_w);
	DECLARE_WRITE8_MEMBER(renegade_68705_ddr_c_w);
	DECLARE_WRITE8_MEMBER(renegade_videoram_w);
	DECLARE_WRITE8_MEMBER(renegade_videoram2_w);
	DECLARE_WRITE8_MEMBER(renegade_flipscreen_w);
	DECLARE_WRITE8_MEMBER(renegade_scroll0_w);
	DECLARE_WRITE8_MEMBER(renegade_scroll1_w);
	DECLARE_CUSTOM_INPUT_MEMBER(mcu_status_r);
	DECLARE_WRITE8_MEMBER(adpcm_play_w);
	DECLARE_DRIVER_INIT(kuniokun);
	DECLARE_DRIVER_INIT(kuniokunb);
	DECLARE_DRIVER_INIT(renegade);
	TILE_GET_INFO_MEMBER(get_bg_tilemap_info);
	TILE_GET_INFO_MEMBER(get_fg_tilemap_info);
	virtual void machine_start();
	virtual void machine_reset();
	virtual void video_start();
	UINT32 screen_update_renegade(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	TIMER_DEVICE_CALLBACK_MEMBER(renegade_interrupt);
	void setbank();
	void draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect);
	required_device<cpu_device> m_audiocpu;
	optional_device<cpu_device> m_mcu;
	required_device<gfxdecode_device> m_gfxdecode;
	required_device<palette_device> m_palette;
};

class renegade_adpcm_device : public device_t,
									public device_sound_interface
{
public:
	renegade_adpcm_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
	~renegade_adpcm_device() {}

	DECLARE_WRITE8_MEMBER(play_w);

protected:
	// device-level overrides
	virtual void device_config_complete();
	virtual void device_start();

	// sound stream update overrides
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);

private:
	// internal state
	oki_adpcm_state m_adpcm;
	sound_stream *m_stream;
	UINT32 m_current;
	UINT32 m_end;
	UINT8 m_nibble;
	UINT8 m_playing;
	UINT8 *m_base;
};

extern const device_type RENEGADE_ADPCM;