#ifndef _GAMEPOCK_H_
#define _GAMEPOCK_H_
#include "sound/speaker.h"

struct HD44102CH {
	UINT8   enabled;
	UINT8   start_page;
	UINT8   address;
	UINT8   y_inc;
	UINT8   ram[256];   /* There are actually 50 x 4 x 8 bits. This just makes addressing easier. */
};

class gamepock_state : public driver_device
{
public:
	gamepock_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_maincpu(*this, "maincpu"),
		m_speaker(*this, "speaker") { }

	virtual void machine_reset();

	UINT8 m_port_a;
	UINT8 m_port_b;
	HD44102CH m_hd44102ch[3];

	void hd44102ch_w( int which, int c_d, UINT8 data );
	void hd44102ch_init( int which );
	void lcd_update();

	DECLARE_WRITE8_MEMBER( port_a_w );
	DECLARE_READ8_MEMBER( port_b_r );
	DECLARE_WRITE8_MEMBER( port_b_w );
	DECLARE_READ8_MEMBER( port_c_r );
	UINT32 screen_update_gamepock(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
	DECLARE_DEVICE_IMAGE_LOAD_MEMBER(gamepock_cart);
	required_device<cpu_device> m_maincpu;
	required_device<speaker_sound_device> m_speaker;
};


/*----------- defined in machine/gamepock.c -----------*/

int gamepock_io_callback( device_t *device, int ioline, int state );

#endif
