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

    Glass

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

class glass_state : public driver_device
{
public:
	glass_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag) ,
		m_videoram(*this, "videoram"),
		m_vregs(*this, "vregs"),
		m_spriteram(*this, "spriteram"),
		m_mainram(*this, "mainram")
	{ }

	/* memory pointers */
	required_shared_ptr<UINT16> m_videoram;
	required_shared_ptr<UINT16> m_vregs;
	required_shared_ptr<UINT16> m_spriteram;
	required_shared_ptr<UINT16> m_mainram;
//      UINT16 *    m_paletteram;    // currently this uses generic palette handling

	/* video-related */
	tilemap_t     *m_pant[2];
	bitmap_ind16    *m_screen_bitmap;

	/* misc */
	int         m_current_bit;
	int         m_current_command;
	int         m_cause_interrupt;
	int         m_blitter_serial_buffer[5];
	DECLARE_WRITE16_MEMBER(clr_int_w);
	DECLARE_WRITE16_MEMBER(OKIM6295_bankswitch_w);
	DECLARE_WRITE16_MEMBER(glass_coin_w);
	DECLARE_WRITE16_MEMBER(glass_blitter_w);
	DECLARE_WRITE16_MEMBER(glass_vram_w);

	DECLARE_READ16_MEMBER( glass_mainram_r );
	DECLARE_WRITE16_MEMBER( glass_mainram_w );

	DECLARE_DRIVER_INIT(glass);
};


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


VIDEO_START( glass );
SCREEN_UPDATE_IND16( glass );