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/*************************************************************************
Atari Tetris hardware
*************************************************************************/
class atetris_state : public driver_device
{
public:
atetris_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_nvram(*this, "nvram") ,
m_videoram(*this, "videoram"){ }
required_shared_ptr<UINT8> m_nvram;
required_shared_ptr<UINT8> m_videoram;
UINT8 *m_slapstic_source;
UINT8 *m_slapstic_base;
UINT8 m_current_bank;
UINT8 m_nvram_write_enable;
emu_timer *m_interrupt_timer;
tilemap_t *m_bg_tilemap;
DECLARE_WRITE8_MEMBER(irq_ack_w);
DECLARE_READ8_MEMBER(atetris_slapstic_r);
DECLARE_WRITE8_MEMBER(coincount_w);
DECLARE_WRITE8_MEMBER(nvram_w);
DECLARE_WRITE8_MEMBER(nvram_enable_w);
DECLARE_WRITE8_MEMBER(atetris_videoram_w);
DECLARE_DRIVER_INIT(atetris);
TILE_GET_INFO_MEMBER(get_tile_info);
virtual void machine_start();
virtual void machine_reset();
virtual void video_start();
UINT32 screen_update_atetris(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
};
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