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class vball_state : public driver_device
{
public:
vball_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag) ,
m_vb_attribram(*this, "vb_attribram"),
m_vb_videoram(*this, "vb_videoram"),
m_vb_scrolly_lo(*this, "vb_scrolly_lo"),
m_spriteram(*this, "spriteram"){ }
required_shared_ptr<UINT8> m_vb_attribram;
required_shared_ptr<UINT8> m_vb_videoram;
required_shared_ptr<UINT8> m_vb_scrolly_lo;
int m_vb_scrollx_hi;
int m_vb_scrolly_hi;
int m_vb_scrollx_lo;
int m_gfxset;
int m_vb_scrollx[256];
int m_vb_bgprombank;
int m_vb_spprombank;
tilemap_t *m_bg_tilemap;
required_shared_ptr<UINT8> m_spriteram;
DECLARE_WRITE8_MEMBER(vball_irq_ack_w);
DECLARE_WRITE8_MEMBER(vb_bankswitch_w);
DECLARE_WRITE8_MEMBER(cpu_sound_command_w);
DECLARE_WRITE8_MEMBER(vb_scrollx_hi_w);
DECLARE_WRITE8_MEMBER(vb_scrollx_lo_w);
DECLARE_WRITE8_MEMBER(vb_videoram_w);
DECLARE_READ8_MEMBER(vb_attrib_r);
DECLARE_WRITE8_MEMBER(vb_attrib_w);
TILEMAP_MAPPER_MEMBER(background_scan);
TILE_GET_INFO_MEMBER(get_bg_tile_info);
virtual void video_start();
UINT32 screen_update_vb(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
TIMER_DEVICE_CALLBACK_MEMBER(vball_scanline);
};
/*----------- defined in video/vball.c -----------*/
void vb_bgprombank_w(running_machine &machine, int bank);
void vb_spprombank_w(running_machine &machine, int bank);
void vb_mark_all_dirty(running_machine &machine);
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