/*****************************************************************************
 *
 * includes/advision.h
 *
 ****************************************************************************/

#ifndef __ADVISION__
#define __ADVISION__

#include "sound/dac.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"

#define SCREEN_TAG  "screen"
#define I8048_TAG   "i8048"
#define COP411_TAG  "cop411"

class advision_state : public driver_device
{
public:
	advision_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
			m_maincpu(*this, I8048_TAG),
			m_soundcpu(*this, COP411_TAG),
			m_dac(*this, "dac"),
			m_cart(*this, "cartslot"),
			m_bank1(*this, "bank1"),
			m_joy(*this, "joystick"),
			m_palette(*this, "palette")
	{ }

	required_device<cpu_device> m_maincpu;
	required_device<cpu_device> m_soundcpu;
	required_device<dac_device> m_dac;
	required_device<generic_slot_device> m_cart;
	required_memory_bank m_bank1;
	required_ioport m_joy;
	required_device<palette_device> m_palette;

	virtual void machine_start();
	virtual void machine_reset();

	virtual void video_start();
	UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);

	void update_dac();
	void vh_write(int data);
	void vh_update(int x);

	DECLARE_READ8_MEMBER( rom_r );
	DECLARE_READ8_MEMBER( ext_ram_r );
	DECLARE_WRITE8_MEMBER( ext_ram_w );
	DECLARE_READ8_MEMBER( controller_r );
	DECLARE_WRITE8_MEMBER( bankswitch_w );
	DECLARE_WRITE8_MEMBER( av_control_w );
	DECLARE_READ8_MEMBER( vsync_r );
	DECLARE_READ8_MEMBER( sound_cmd_r );
	DECLARE_WRITE8_MEMBER( sound_g_w );
	DECLARE_WRITE8_MEMBER( sound_d_w );

	memory_region *m_cart_rom;

	int m_ea_bank;

	/* external RAM state */
	dynamic_buffer m_ext_ram;
	int m_rambank;

	/* video state */
	int m_frame_count;
	int m_frame_start;
	int m_video_enable;
	int m_video_bank;
	int m_video_hpos;
	UINT8 m_led_latch[8];
	dynamic_buffer m_display;

	/* sound state */
	int m_sound_cmd;
	int m_sound_d;
	int m_sound_g;
	DECLARE_PALETTE_INIT(advision);
};

#endif
