1 // license:BSD-3-Clause 2 // copyright-holders:Paul Hampson 3 4 #include "machine/gen_latch.h" 5 #include "machine/timer.h" 6 #include "emupal.h" 7 #include "screen.h" 8 #include "tilemap.h" 9 10 class vball_state : public driver_device 11 { 12 public: vball_state(const machine_config & mconfig,device_type type,const char * tag)13 vball_state(const machine_config &mconfig, device_type type, const char *tag) 14 : driver_device(mconfig, type, tag), 15 m_maincpu(*this, "maincpu"), 16 m_audiocpu(*this, "audiocpu"), 17 m_gfxdecode(*this, "gfxdecode"), 18 m_screen(*this, "screen"), 19 m_palette(*this, "palette"), 20 m_soundlatch(*this, "soundlatch"), 21 m_attribram(*this, "attribram"), 22 m_videoram(*this, "videoram"), 23 m_scrolly_lo(*this, "scrolly_lo"), 24 m_spriteram(*this, "spriteram") { } 25 26 void vball(machine_config &config); 27 28 private: 29 required_device<cpu_device> m_maincpu; 30 required_device<cpu_device> m_audiocpu; 31 required_device<gfxdecode_device> m_gfxdecode; 32 required_device<screen_device> m_screen; 33 required_device<palette_device> m_palette; 34 required_device<generic_latch_8_device> m_soundlatch; 35 36 required_shared_ptr<uint8_t> m_attribram; 37 required_shared_ptr<uint8_t> m_videoram; 38 required_shared_ptr<uint8_t> m_scrolly_lo; 39 required_shared_ptr<uint8_t> m_spriteram; 40 41 int m_scrollx_hi; 42 int m_scrolly_hi; 43 int m_scrollx_lo; 44 int m_gfxset; 45 int m_scrollx[256]; 46 int m_bgprombank; 47 int m_spprombank; 48 tilemap_t *m_bg_tilemap; 49 50 void irq_ack_w(offs_t offset, uint8_t data); 51 void bankswitch_w(uint8_t data); 52 void scrollx_hi_w(uint8_t data); 53 void scrollx_lo_w(uint8_t data); 54 void videoram_w(offs_t offset, uint8_t data); 55 void attrib_w(offs_t offset, uint8_t data); 56 57 TILEMAP_MAPPER_MEMBER(background_scan); 58 TILE_GET_INFO_MEMBER(get_bg_tile_info); 59 60 virtual void machine_start() override; 61 virtual void video_start() override; 62 63 uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); 64 TIMER_DEVICE_CALLBACK_MEMBER(vball_scanline); 65 void bgprombank_w(int bank); 66 void spprombank_w(int bank); 67 void draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect); 68 inline int scanline_to_vcount(int scanline); 69 70 void main_map(address_map &map); 71 void sound_map(address_map &map); 72 }; 73