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/*************************************************************************
Double Dragon & Double Dragon II (but also China Gate)
*************************************************************************/
class ddragon_state : public driver_device
{
public:
ddragon_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) { }
/* memory pointers */
UINT8 * m_rambase;
UINT8 * m_bgvideoram;
UINT8 * m_fgvideoram;
UINT8 * m_spriteram;
UINT8 * m_scrollx_lo;
UINT8 * m_scrolly_lo;
UINT8 * m_darktowr_mcu_ports;
// UINT8 * m_paletteram; // currently this uses generic palette handling
// UINT8 * m_paletteram_2; // currently this uses generic palette handling
size_t m_spriteram_size; // FIXME: this appears in chinagat.c, but is it really used?
/* video-related */
tilemap_t *m_fg_tilemap;
tilemap_t *m_bg_tilemap;
UINT8 m_technos_video_hw;
UINT8 m_scrollx_hi;
UINT8 m_scrolly_hi;
/* misc */
UINT8 m_dd_sub_cpu_busy;
UINT8 m_sprite_irq;
UINT8 m_sound_irq;
UINT8 m_ym_irq;
UINT8 m_adpcm_sound_irq;
UINT32 m_adpcm_pos[2];
UINT32 m_adpcm_end[2];
UINT8 m_adpcm_idle[2];
int m_adpcm_data[2];
/* for Sai Yu Gou Ma Roku */
int m_adpcm_addr;
int m_i8748_P1;
int m_i8748_P2;
int m_pcm_shift;
int m_pcm_nibble;
int m_mcu_command;
#if 0
int m_m5205_clk;
#endif
/* devices */
device_t *m_maincpu;
device_t *m_snd_cpu;
device_t *m_sub_cpu;
device_t *m_adpcm_1;
device_t *m_adpcm_2;
};
/*----------- defined in video/ddragon.c -----------*/
WRITE8_HANDLER( ddragon_bgvideoram_w );
WRITE8_HANDLER( ddragon_fgvideoram_w );
VIDEO_START( chinagat );
VIDEO_START( ddragon );
SCREEN_UPDATE( ddragon );
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