class xorworld_state : public driver_device { public: xorworld_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) { } UINT16 *m_videoram; tilemap_t *m_bg_tilemap; UINT16 *m_spriteram; }; /*----------- defined in video/xorworld.c -----------*/ WRITE16_HANDLER( xorworld_videoram16_w ); PALETTE_INIT( xorworld ); VIDEO_START( xorworld ); SCREEN_UPDATE( xorworld );