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

    Green Beret

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

#include "sound/sn76496.h"

class gberet_state : public driver_device
{
public:
	gberet_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_colorram(*this, "colorram"),
		m_videoram(*this, "videoram"),
		m_spriteram2(*this, "spriteram2"),
		m_spriteram(*this, "spriteram"),
		m_scrollram(*this, "scrollram"),
		m_soundlatch(*this, "soundlatch"),
		m_sn(*this, "snsnd") { }

	/* memory pointers */
	required_shared_ptr<UINT8> m_colorram;
	required_shared_ptr<UINT8> m_videoram;
	optional_shared_ptr<UINT8> m_spriteram2;
	required_shared_ptr<UINT8> m_spriteram;
	optional_shared_ptr<UINT8> m_scrollram;
	optional_shared_ptr<UINT8> m_soundlatch;

	/* devices */
	required_device<sn76489a_new_device> m_sn;

	/* video-related */
	tilemap_t * m_bg_tilemap;
	UINT8       m_spritebank;

	/* misc */
	UINT8       m_interrupt_mask;
	UINT8       m_interrupt_ticks;
	DECLARE_WRITE8_MEMBER(gberet_coin_counter_w);
	DECLARE_WRITE8_MEMBER(mrgoemon_coin_counter_w);
	DECLARE_WRITE8_MEMBER(gberet_flipscreen_w);
	DECLARE_WRITE8_MEMBER(gberet_sound_w);
	DECLARE_WRITE8_MEMBER(gberetb_flipscreen_w);
	DECLARE_READ8_MEMBER(gberetb_irq_ack_r);
	DECLARE_WRITE8_MEMBER(gberetb_nmi_ack_w);
	DECLARE_WRITE8_MEMBER(gberet_videoram_w);
	DECLARE_WRITE8_MEMBER(gberet_colorram_w);
	DECLARE_WRITE8_MEMBER(gberet_scroll_w);
	DECLARE_WRITE8_MEMBER(gberet_sprite_bank_w);
	DECLARE_WRITE8_MEMBER(gberetb_scroll_w);
	DECLARE_DRIVER_INIT(mrgoemon);
	TILE_GET_INFO_MEMBER(get_bg_tile_info);
	DECLARE_MACHINE_START(gberet);
	DECLARE_MACHINE_RESET(gberet);
	DECLARE_VIDEO_START(gberet);
	DECLARE_PALETTE_INIT(gberet);
};


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




SCREEN_UPDATE_IND16( gberet );
SCREEN_UPDATE_IND16( gberetb );