diff options
Diffstat (limited to 'src/mame/seibu/metlfrzr.cpp')
-rw-r--r-- | src/mame/seibu/metlfrzr.cpp | 165 |
1 files changed, 82 insertions, 83 deletions
diff --git a/src/mame/seibu/metlfrzr.cpp b/src/mame/seibu/metlfrzr.cpp index 8ca2c880143..04b79f1aa6e 100644 --- a/src/mame/seibu/metlfrzr.cpp +++ b/src/mame/seibu/metlfrzr.cpp @@ -43,7 +43,8 @@ public: m_vram(*this, "vram"), m_video_regs(*this, "vregs"), m_palette(*this, "palette"), - m_gfxdecode(*this, "gfxdecode") + m_gfxdecode(*this, "gfxdecode"), + m_mainbank(*this, "mainbank") { } void metlfrzr(machine_config &config); @@ -51,15 +52,20 @@ public: void init_metlfrzr(); protected: - virtual void machine_start() override; - virtual void machine_reset() override; - virtual void video_start() override; + virtual void machine_start() override ATTR_COLD; + virtual void machine_reset() override ATTR_COLD; + virtual void video_start() override ATTR_COLD; private: void legacy_bg_draw(bitmap_ind16 &bitmap, const rectangle &cliprect); void legacy_obj_draw(bitmap_ind16 &bitmap, const rectangle &cliprect); uint32_t screen_update_metlfrzr(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); + void output_w(uint8_t data); + TIMER_DEVICE_CALLBACK_MEMBER(scanline); + void decrypted_opcodes_map(address_map &map) ATTR_COLD; + void metlfrzr_map(address_map &map) ATTR_COLD; + required_device<cpu_device> m_maincpu; required_shared_ptr<uint8_t> m_decrypted_opcodes; required_shared_ptr<uint8_t> m_work_ram; @@ -68,12 +74,10 @@ private: required_device<palette_device> m_palette; required_device<gfxdecode_device> m_gfxdecode; - void output_w(uint8_t data); - TIMER_DEVICE_CALLBACK_MEMBER(scanline); + required_memory_bank m_mainbank; + uint8_t m_fg_tilebank = 0; bool m_rowscroll_enable = false; - void decrypted_opcodes_map(address_map &map); - void metlfrzr_map(address_map &map); }; @@ -102,34 +106,29 @@ void metlfrzr_state::legacy_bg_draw(bitmap_ind16 &bitmap,const rectangle &clipre { gfx_element *gfx = m_gfxdecode->gfx(m_fg_tilebank); const uint16_t vram_mask = (m_vram.length() - 1) >> 1; - int count; - int x_scroll_base; - int x_scroll_shift; - uint16_t x_scroll_value; - x_scroll_value = m_video_regs[0x17] + ((m_video_regs[0x06] & 1) << 8); - x_scroll_base = (x_scroll_value >> 3) * 32; - - for (count=0;count<32*33;count++) + uint16_t x_scroll_value = m_video_regs[0x17] + ((m_video_regs[0x06] & 1) << 8); + int x_scroll_base = (x_scroll_value >> 3) * 32; + + for (int count = 0; count< 32 * 33; count++) { int tile_base = count; - int y = (count % 32); - if(y > 7 || m_rowscroll_enable == false) + int y = (count & 0x1f); + int x_scroll_shift; + if (y > 7 || m_rowscroll_enable == false) { - tile_base+= x_scroll_base; + tile_base += x_scroll_base; x_scroll_shift = (x_scroll_value & 7); } else x_scroll_shift = 0; tile_base &= vram_mask; - int x = (count / 32); - + int x = (count >> 5); - uint16_t tile = m_vram[tile_base*2+0] + ((m_vram[tile_base*2+1] & 0xf0) << 4); - uint8_t color = m_vram[tile_base*2+1] & 0xf; + const uint16_t tile = m_vram[tile_base * 2 + 0] + ((m_vram[tile_base * 2 + 1] & 0xf0) << 4); + const uint8_t color = m_vram[tile_base * 2 + 1] & 0xf; - gfx->transpen(bitmap,cliprect,tile,color,0,0,x*8-x_scroll_shift,y*8,0xf); + gfx->transpen(bitmap, cliprect, tile, color, 0, 0, x * 8 - x_scroll_shift, y * 8, 0xf); } - } /* @@ -149,21 +148,20 @@ void metlfrzr_state::legacy_obj_draw(bitmap_ind16 &bitmap,const rectangle &clipr { gfx_element *gfx_2 = m_gfxdecode->gfx(2); gfx_element *gfx_3 = m_gfxdecode->gfx(3); - int count; - uint8_t *base_spriteram = m_work_ram + 0xe00; + uint8_t const *const base_spriteram = m_work_ram + 0xe00; - for(count=0x200-4;count>-1;count-=4) + for (int count = 0x200 - 4; count > -1; count -= 4) { - gfx_element *cur_gfx = base_spriteram[count+1] & 0x40 ? gfx_3 : gfx_2; - uint8_t tile_bank = (base_spriteram[count+1] & 0x30) >> 4; - uint16_t tile = base_spriteram[count] | (tile_bank << 8); - uint8_t color = base_spriteram[count+1] & 0xf; - int y = base_spriteram[count+2]; - int x = base_spriteram[count+3]; - if(base_spriteram[count+1] & 0x80) - x-=256; - - cur_gfx->transpen(bitmap,cliprect,tile,color,0,0,x,y,0xf); + gfx_element *cur_gfx = base_spriteram[count + 1] & 0x40 ? gfx_3 : gfx_2; + const uint8_t tile_bank = (base_spriteram[count + 1] & 0x30) >> 4; + const uint16_t tile = base_spriteram[count] | (tile_bank << 8); + const uint8_t color = base_spriteram[count + 1] & 0xf; + int y = base_spriteram[count + 2]; + int x = base_spriteram[count + 3]; + if (BIT(base_spriteram[count + 1], 7)) + x -= 256; + + cur_gfx->transpen(bitmap, cliprect, tile, color, 0, 0, x, y, 0xf); } } @@ -171,8 +169,8 @@ uint32_t metlfrzr_state::screen_update_metlfrzr(screen_device &screen, bitmap_in { bitmap.fill(m_palette->black_pen(), cliprect); - legacy_bg_draw(bitmap,cliprect); - legacy_obj_draw(bitmap,cliprect); + legacy_bg_draw(bitmap, cliprect); + legacy_obj_draw(bitmap, cliprect); return 0; } @@ -185,11 +183,11 @@ void metlfrzr_state::output_w(uint8_t data) // bit 1: enabled during gameplay, rowscroll enable? // bit 0: enabled , unknown purpose (lamp?) // TODO: bits 1-0 might actually be sprite DMA enable mask/request - machine().bookkeeping().coin_lockout_w(1, BIT(data,6) ); - machine().bookkeeping().coin_lockout_w(0, BIT(data,5) ); + machine().bookkeeping().coin_lockout_w(1, BIT(data, 6)); + machine().bookkeeping().coin_lockout_w(0, BIT(data, 5)); m_fg_tilebank = (data & 0x10) >> 4; - membank("bank1")->set_entry((data & 0xc) >> 2); - m_rowscroll_enable = bool(BIT(data,1)); + m_mainbank->set_entry((data & 0xc) >> 2); + m_rowscroll_enable = bool(BIT(data, 1)); // popmessage("%02x %02x",m_fg_tilebank,data & 3); } @@ -197,7 +195,7 @@ void metlfrzr_state::output_w(uint8_t data) void metlfrzr_state::metlfrzr_map(address_map &map) { map(0x0000, 0x7fff).rom(); - map(0x8000, 0xbfff).bankr("bank1"); + map(0x8000, 0xbfff).bankr(m_mainbank); map(0xc000, 0xcfff).ram().share(m_vram); map(0xd000, 0xd1ff).ram().w(m_palette, FUNC(palette_device::write_indirect)).share("palette"); map(0xd200, 0xd3ff).ram().w(m_palette, FUNC(palette_device::write_indirect_ext)).share("palette_ext"); @@ -209,7 +207,7 @@ void metlfrzr_state::metlfrzr_map(address_map &map) map(0xd602, 0xd602).portr("START"); map(0xd603, 0xd603).portr("DSW1"); map(0xd604, 0xd604).portr("DSW2"); - map(0xd600, 0xd61f).writeonly().share("vregs"); + map(0xd600, 0xd61f).writeonly().share(m_video_regs); map(0xd700, 0xd700).w(FUNC(metlfrzr_state::output_w)); map(0xd710, 0xd710).w("t5182", FUNC(t5182_device::sound_irq_w)); @@ -220,14 +218,14 @@ void metlfrzr_state::metlfrzr_map(address_map &map) map(0xd800, 0xdfff).ram(); map(0xe000, 0xefff).ram(); - map(0xf000, 0xffff).ram().share("wram"); + map(0xf000, 0xffff).ram().share(m_work_ram); } void metlfrzr_state::decrypted_opcodes_map(address_map &map) { - map(0x0000, 0x7fff).rom().share("decrypted_opcodes"); - map(0x8000, 0xbfff).bankr("bank1"); - map(0xf000, 0xffff).ram().share("wram"); // executes code at 0xf5d5 + map(0x0000, 0x7fff).rom().share(m_decrypted_opcodes); + map(0x8000, 0xbfff).bankr(m_mainbank); + map(0xf000, 0xffff).ram().share(m_work_ram); // executes code at 0xf5d5 } @@ -326,13 +324,12 @@ INPUT_PORTS_END void metlfrzr_state::machine_start() { - membank("bank1")->configure_entries(0, 4, memregion("maincpu")->base() + 0x10000, 0x4000); + m_mainbank->configure_entries(0, 4, memregion("maincpu")->base() + 0x10000, 0x4000); } void metlfrzr_state::machine_reset() { - membank("bank1")->set_entry(0); - + m_mainbank->set_entry(0); } @@ -360,39 +357,41 @@ static const gfx_layout sprite_layout = static GFXDECODE_START(gfx_metlfrzr) - GFXDECODE_ENTRY("gfx1", 0, tile_layout, 0x100, 16) - GFXDECODE_ENTRY("gfx2", 0, tile_layout, 0x100, 16) - GFXDECODE_ENTRY("gfx3", 0, sprite_layout, 0, 16) - GFXDECODE_ENTRY("gfx4", 0, sprite_layout, 0, 16) + GFXDECODE_ENTRY("tiles1", 0, tile_layout, 0x100, 16) + GFXDECODE_ENTRY("tiles2", 0, tile_layout, 0x100, 16) + GFXDECODE_ENTRY("sprites1", 0, sprite_layout, 0, 16) + GFXDECODE_ENTRY("sprites2", 0, sprite_layout, 0, 16) GFXDECODE_END TIMER_DEVICE_CALLBACK_MEMBER(metlfrzr_state::scanline) { int scanline = param; - if(scanline == 240) // vblank-out irq - m_maincpu->set_input_line_and_vector(0, HOLD_LINE,0xd7); /* Z80 - RST 10h */ + if (scanline == 240) // vblank-out irq + m_maincpu->set_input_line_and_vector(0, HOLD_LINE, 0xd7); // Z80 - RST 10h // TODO: check this irq. - if(scanline == 0) // vblank-in irq - m_maincpu->set_input_line_and_vector(0, HOLD_LINE,0xcf); /* Z80 - RST 08h */ + if (scanline == 0) // vblank-in irq + m_maincpu->set_input_line_and_vector(0, HOLD_LINE, 0xcf); // Z80 - RST 08h } void metlfrzr_state::metlfrzr(machine_config &config) { - /* basic machine hardware */ + // basic machine hardware Z80(config, m_maincpu, XTAL(12'000'000) / 2); m_maincpu->set_addrmap(AS_PROGRAM, &metlfrzr_state::metlfrzr_map); m_maincpu->set_addrmap(AS_OPCODES, &metlfrzr_state::decrypted_opcodes_map); TIMER(config, "scantimer").configure_scanline(FUNC(metlfrzr_state::scanline), "screen", 0, 1); - T5182(config, "t5182", 0); + t5182_device &t5182(T5182(config, "t5182", XTAL(14'318'181)/4)); + t5182.ym_read_callback().set("ymsnd", FUNC(ym2151_device::read)); + t5182.ym_write_callback().set("ymsnd", FUNC(ym2151_device::write)); PALETTE(config, m_palette).set_format(palette_device::xBGR_444, 0x200).set_indirect_entries(256 * 2); GFXDECODE(config, m_gfxdecode, m_palette, gfx_metlfrzr); - /* video hardware */ + // video hardware screen_device &screen(SCREEN(config, "screen", SCREEN_TYPE_RASTER)); screen.set_refresh_hz(60); screen.set_vblank_time(ATTOSECONDS_IN_USEC(0)); @@ -401,10 +400,10 @@ void metlfrzr_state::metlfrzr(machine_config &config) screen.set_screen_update(FUNC(metlfrzr_state::screen_update_metlfrzr)); screen.set_palette(m_palette); - /* sound hardware */ + // sound hardware SPEAKER(config, "mono").front_center(); - ym2151_device &ymsnd(YM2151(config, "ymsnd", XTAL(14'318'181) / 4)); /* 3.579545 MHz */ + ym2151_device &ymsnd(YM2151(config, "ymsnd", XTAL(14'318'181) / 4)); // 3.579545 MHz ymsnd.irq_handler().set("t5182", FUNC(t5182_device::ym2151_irq_handler)); ymsnd.add_route(0, "mono", 0.5); ymsnd.add_route(1, "mono", 0.5); @@ -417,22 +416,22 @@ ROM_START(metlfrzr) ROM_LOAD("1.15j", 0x00000, 0x08000, CRC(f59b5fa2) SHA1(6033967dad5e64f45afbcb1b45c8eb79e0787afb)) ROM_LOAD("2.14j", 0x10000, 0x10000, CRC(21ecc248) SHA1(2fccf7db73890faf7c489bfc43c88ded54d5052d)) - ROM_REGION(0x8000, "t5182_z80", 0) /* Toshiba T5182 external data ROM */ + ROM_REGION(0x8000, "t5182:external", 0) // Toshiba T5182 external data ROM ROM_LOAD("3.4h", 0x0000, 0x8000, CRC(36f88e54) SHA1(5cbea56c7e547c353ae2f9256caaceb20e5e8503)) - ROM_REGION(0x20000, "gfx1", 0) + ROM_REGION(0x20000, "tiles1", 0) ROM_LOAD16_BYTE("10.5a", 0x00001, 0x10000, CRC(3313e74a) SHA1(8622dfb5c013173d5bb037254f4c23b1282404e1)) ROM_LOAD16_BYTE("12.7a", 0x00000, 0x10000, CRC(6da5fda9) SHA1(9d7b0b26598f31da589fece3535a4d1405b03fc2)) - ROM_REGION(0x20000, "gfx2", 0) + ROM_REGION(0x20000, "tiles2", 0) ROM_LOAD16_BYTE("11.6a", 0x00001, 0x10000, CRC(fa6490b8) SHA1(9a4c1e09b9e8fb256fec0a5ed120fece8a12e1c8)) ROM_LOAD16_BYTE("13.9a", 0x00000, 0x10000, CRC(a4f689ec) SHA1(e58bfede3fabf4cfca76c20aafb3e9fb604777c9)) - ROM_REGION(0x20000, "gfx3", 0) + ROM_REGION(0x20000, "sprites1", 0) ROM_LOAD16_BYTE("14.13a", 0x00001, 0x10000, CRC(a9cd5225) SHA1(f3d5e29ee08fb563fdc1af3c64128f2cd2feb987)) ROM_LOAD16_BYTE("16.11a", 0x00000, 0x10000, CRC(92f2cb49) SHA1(498021d94b0fde216207076491702af2324a2dcc)) - ROM_REGION(0x20000, "gfx4", 0) + ROM_REGION(0x20000, "sprites2", 0) ROM_LOAD16_BYTE("15.12a", 0x00001, 0x10000, CRC(ce5c4c8b) SHA1(2351d66ba51e80097ce53bfd448ac24901844cda)) ROM_LOAD16_BYTE("17.10a", 0x00000, 0x10000, CRC(3fec33f7) SHA1(af086ba30fc4521a0114da2824f5baa04d225a89)) @@ -449,32 +448,32 @@ ROM_END void metlfrzr_state::init_metlfrzr() { - // same as cshooter.cpp + // same as seibu/airraid.cpp uint8_t *rom = memregion("maincpu")->base(); - for (int A = 0x0000;A < 0x8000;A++) + for (int A = 0x0000; A < 0x8000; A++) { - /* decode the opcodes */ + // decode the opcodes m_decrypted_opcodes[A] = rom[A]; - if (BIT(A,5) && !BIT(A,3)) + if (BIT(A, 5) && !BIT(A, 3)) m_decrypted_opcodes[A] ^= 0x40; - if (BIT(A,10) && !BIT(A,9) && BIT(A,3)) + if (BIT(A, 10) && !BIT(A, 9) && BIT(A, 3)) m_decrypted_opcodes[A] ^= 0x20; - if ((BIT(A,10) ^ BIT(A,9)) && BIT(A,1)) + if ((BIT(A, 10) ^ BIT(A, 9)) && BIT(A, 1)) m_decrypted_opcodes[A] ^= 0x02; - if (BIT(A,9) || !BIT(A,5) || BIT(A,3)) - m_decrypted_opcodes[A] = bitswap<8>(m_decrypted_opcodes[A],7,6,1,4,3,2,5,0); + if (BIT(A, 9) || !BIT(A, 5) || BIT(A, 3)) + m_decrypted_opcodes[A] = bitswap<8>(m_decrypted_opcodes[A], 7, 6, 1, 4, 3, 2, 5, 0); - /* decode the data */ - if (BIT(A,5)) + // decode the data + if (BIT(A, 5)) rom[A] ^= 0x40; - if (BIT(A,9) || !BIT(A,5)) - rom[A] = bitswap<8>(rom[A],7,6,1,4,3,2,5,0); + if (BIT(A, 9) || !BIT(A, 5)) + rom[A] = bitswap<8>(rom[A], 7, 6, 1, 4, 3, 2, 5, 0); } } |