// license:BSD-3-Clause // copyright-holders:David Haywood /* Data East Backfire! Backfire! Note that the alternate "Potentiometer" controls (which set 2 has as the default) must first be calibrated by holding 1P Button 2 + Start on the "I/O Check" screen. The alternate "Optical Sensor" controls are not currently emulated. there may still be some problems with the 156 co-processor, but it seems to be mostly correct */ #include "emu.h" #include "machine/adc0808.h" #include "machine/decocrpt.h" #include "machine/deco156.h" #include "machine/eepromser.h" #include "sound/okim6295.h" #include "sound/ymz280b.h" #include "cpu/arm/arm.h" #include "video/deco16ic.h" #include "video/decospr.h" #include "emupal.h" #include "rendlay.h" #include "screen.h" #include "speaker.h" class backfire_state : public driver_device { public: backfire_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_mainram(*this, "mainram"), m_left_priority(*this, "left_priority"), m_right_priority(*this, "right_priority"), m_maincpu(*this, "maincpu"), m_sprgen(*this, "spritegen%u", 1U), m_deco_tilegen(*this, "tilegen%u", 1U), m_eeprom(*this, "eeprom"), m_adc(*this, "adc"), m_palette(*this, "palette"), m_lscreen(*this, "lscreen") { } void backfire(machine_config &config); void init_backfire(); private: DECLARE_READ32_MEMBER(control2_r); template DECLARE_READ32_MEMBER(pf_rowscroll_r); template DECLARE_WRITE32_MEMBER(pf_rowscroll_w); template DECLARE_READ32_MEMBER(spriteram_r); template DECLARE_WRITE32_MEMBER(spriteram_w); DECLARE_READ32_MEMBER(backfire_speedup_r); DECLARE_WRITE8_MEMBER(eeprom_w); DECLARE_READ32_MEMBER(pot_select_r); virtual void machine_start() override; virtual void video_start() override; uint32_t screen_update_left(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); uint32_t screen_update_right(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); DECLARE_WRITE_LINE_MEMBER(vbl_interrupt); DECLARE_WRITE32_MEMBER(irq_ack_w); void descramble_sound(); DECO16IC_BANK_CB_MEMBER(bank_callback); DECOSPR_PRIORITY_CB_MEMBER(pri_callback); void backfire_map(address_map &map); /* memory pointers */ std::unique_ptr m_spriteram[2]; std::unique_ptr m_pf_rowscroll[4]; required_shared_ptr m_mainram; required_shared_ptr m_left_priority; required_shared_ptr m_right_priority; /* devices */ required_device m_maincpu; required_device_array m_sprgen; required_device_array m_deco_tilegen; required_device m_eeprom; required_device m_adc; required_device m_palette; required_device m_lscreen; }; //uint32_t *backfire_180010, *backfire_188010; /* I'm using the functions in deco16ic.c ... same chips, why duplicate code? */ void backfire_state::video_start() { m_spriteram[0] = std::make_unique(0x2000/4); m_spriteram[1] = std::make_unique(0x2000/4); /* and register the allocated ram so that save states still work */ m_pf_rowscroll[0] = std::make_unique(0x1000/4); m_pf_rowscroll[1] = std::make_unique(0x1000/4); m_pf_rowscroll[2] = std::make_unique(0x1000/4); m_pf_rowscroll[3] = std::make_unique(0x1000/4); save_pointer(NAME(m_spriteram[0]), 0x2000/4); save_pointer(NAME(m_spriteram[1]), 0x2000/4); save_pointer(NAME(m_pf_rowscroll[0]), 0x1000/4); save_pointer(NAME(m_pf_rowscroll[1]), 0x1000/4); save_pointer(NAME(m_pf_rowscroll[2]), 0x1000/4); save_pointer(NAME(m_pf_rowscroll[3]), 0x1000/4); } uint32_t backfire_state::screen_update_left(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { // sprites are flipped relative to tilemaps m_sprgen[0]->set_flip_screen(true); /* screen 1 uses pf1 as the forground and pf3 as the background */ /* screen 2 uses pf2 as the foreground and pf4 as the background */ m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0].get(), m_pf_rowscroll[1].get()); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2].get(), m_pf_rowscroll[3].get()); screen.priority().fill(0); bitmap.fill(0x100, cliprect); if (m_left_priority[0] == 0) { m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 1); m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_sprgen[0]->draw_sprites(bitmap, cliprect, m_spriteram[0].get(), 0x2000/4); } else if (m_left_priority[0] == 2) { m_deco_tilegen[0]->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[1]->tilemap_1_draw(screen, bitmap, cliprect, 0, 4); m_sprgen[0]->draw_sprites(bitmap, cliprect, m_spriteram[0].get(), 0x2000/4); } else popmessage( "unknown left priority %08x", m_left_priority[0]); return 0; } uint32_t backfire_state::screen_update_right(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { // sprites are flipped relative to tilemaps m_sprgen[1]->set_flip_screen(true); /* screen 1 uses pf1 as the forground and pf3 as the background */ /* screen 2 uses pf2 as the foreground and pf4 as the background */ m_deco_tilegen[0]->pf_update(m_pf_rowscroll[0].get(), m_pf_rowscroll[1].get()); m_deco_tilegen[1]->pf_update(m_pf_rowscroll[2].get(), m_pf_rowscroll[3].get()); screen.priority().fill(0); bitmap.fill(0x500, cliprect); if (m_right_priority[0] == 0) { m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, 0, 1); m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, 0, 2); m_sprgen[1]->draw_sprites(bitmap, cliprect, m_spriteram[1].get(), 0x2000/4); } else if (m_right_priority[0] == 2) { m_deco_tilegen[0]->tilemap_2_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen[1]->tilemap_2_draw(screen, bitmap, cliprect, 0, 4); m_sprgen[1]->draw_sprites(bitmap, cliprect, m_spriteram[1].get(), 0x2000/4); } else popmessage( "unknown right priority %08x", m_right_priority[0]); return 0; } WRITE8_MEMBER(backfire_state::eeprom_w) { m_eeprom->clk_write(BIT(data, 1) ? ASSERT_LINE : CLEAR_LINE); m_eeprom->di_write(BIT(data, 0)); m_eeprom->cs_write(BIT(data, 2) ? ASSERT_LINE : CLEAR_LINE); } /* map 32-bit writes to 16-bit */ template READ32_MEMBER(backfire_state::pf_rowscroll_r){ return m_pf_rowscroll[Layer][offset] ^ 0xffff0000; } template WRITE32_MEMBER(backfire_state::pf_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf_rowscroll[Layer][offset]); } READ32_MEMBER(backfire_state::pot_select_r) { if (!machine().side_effects_disabled()) m_adc->address_offset_start_w(offset, 0); return 0; } template READ32_MEMBER(backfire_state::spriteram_r) { return m_spriteram[Chip][offset] ^ 0xffff0000; } template WRITE32_MEMBER(backfire_state::spriteram_w) { data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_spriteram[Chip][offset]); } void backfire_state::backfire_map(address_map &map) { map(0x000000, 0x0fffff).rom(); map(0x100000, 0x10001f).rw(m_deco_tilegen[0], FUNC(deco16ic_device::pf_control_dword_r), FUNC(deco16ic_device::pf_control_dword_w)); map(0x110000, 0x111fff).rw(m_deco_tilegen[0], FUNC(deco16ic_device::pf1_data_dword_r), FUNC(deco16ic_device::pf1_data_dword_w)); map(0x114000, 0x115fff).rw(m_deco_tilegen[0], FUNC(deco16ic_device::pf2_data_dword_r), FUNC(deco16ic_device::pf2_data_dword_w)); map(0x120000, 0x120fff).rw(FUNC(backfire_state::pf_rowscroll_r<0>), FUNC(backfire_state::pf_rowscroll_w<0>)); map(0x124000, 0x124fff).rw(FUNC(backfire_state::pf_rowscroll_r<1>), FUNC(backfire_state::pf_rowscroll_w<1>)); map(0x130000, 0x13001f).rw(m_deco_tilegen[1], FUNC(deco16ic_device::pf_control_dword_r), FUNC(deco16ic_device::pf_control_dword_w)); map(0x140000, 0x141fff).rw(m_deco_tilegen[1], FUNC(deco16ic_device::pf1_data_dword_r), FUNC(deco16ic_device::pf1_data_dword_w)); map(0x144000, 0x145fff).rw(m_deco_tilegen[1], FUNC(deco16ic_device::pf2_data_dword_r), FUNC(deco16ic_device::pf2_data_dword_w)); map(0x150000, 0x150fff).rw(FUNC(backfire_state::pf_rowscroll_r<2>), FUNC(backfire_state::pf_rowscroll_w<2>)); map(0x154000, 0x154fff).rw(FUNC(backfire_state::pf_rowscroll_r<3>), FUNC(backfire_state::pf_rowscroll_w<3>)); map(0x160000, 0x161fff).rw(m_palette, FUNC(palette_device::read16), FUNC(palette_device::write16)).umask32(0x0000ffff).share("palette"); map(0x170000, 0x177fff).ram().share("mainram");// main ram map(0x180010, 0x180013).nopw(); // always 180010 ? map(0x184000, 0x185fff).rw(FUNC(backfire_state::spriteram_r<0>), FUNC(backfire_state::spriteram_w<0>)); map(0x188010, 0x188013).nopw(); // always 188010 ? map(0x18c000, 0x18dfff).rw(FUNC(backfire_state::spriteram_r<1>), FUNC(backfire_state::spriteram_w<1>)); map(0x190000, 0x190003).portr("IN0"); map(0x194000, 0x194003).portr("IN1"); map(0x1a4000, 0x1a4000).w(FUNC(backfire_state::eeprom_w)); map(0x1a8000, 0x1a8003).ram().share("left_priority"); map(0x1ac000, 0x1ac003).ram().share("right_priority"); map(0x1b0000, 0x1b0003).w(FUNC(backfire_state::irq_ack_w)); map(0x1c0000, 0x1c0007).rw("ymz", FUNC(ymz280b_device::read), FUNC(ymz280b_device::write)).umask32(0x000000ff); map(0x1e4000, 0x1e4000).r("adc", FUNC(adc0808_device::data_r)); map(0x1e8000, 0x1e8007).r(FUNC(backfire_state::pot_select_r)); } static INPUT_PORTS_START( backfire ) PORT_START("IN0") PORT_BIT( 0x00000001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x00000002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x00000004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x00000008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x00000010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT( 0x00000020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_BIT( 0x00000040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1) PORT_BIT( 0x00000080, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x0000ff00, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x00010000, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x00020000, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x00040000, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_SERVICE_NO_TOGGLE( 0x00080000, IP_ACTIVE_LOW ) PORT_BIT( 0x00100000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("lscreen") PORT_BIT( 0x00200000, IP_ACTIVE_LOW, IPT_UNUSED ) /* 'soundmask' */ PORT_BIT( 0x00400000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("lscreen") PORT_BIT( 0x00800000, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x01000000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_93cxx_device, do_read) PORT_BIT( 0x02000000, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_BIT( 0x04000000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("adc", adc0808_device, eoc_r) PORT_BIT( 0xf8000000, IP_ACTIVE_LOW, IPT_UNKNOWN ) PORT_START("IN1") PORT_BIT( 0x00000001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x00000002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x00000004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x00000008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x00000010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x00000020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x00000040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_BIT( 0x00000080, IP_ACTIVE_LOW, IPT_START2 ) PORT_BIT( 0x0000ff00, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x00010000, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x00020000, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x00040000, IP_ACTIVE_LOW, IPT_SERVICE2 ) PORT_BIT( 0xfff80000, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("PADDLE0") PORT_BIT ( 0xff, 0x80, IPT_PADDLE ) PORT_PLAYER(1) PORT_MINMAX(0x20, 0xe0) PORT_SENSITIVITY(100) PORT_KEYDELTA(4) PORT_REVERSE PORT_START("PADDLE1") PORT_BIT ( 0xff, 0x80, IPT_PADDLE ) PORT_PLAYER(2) PORT_MINMAX(0x20, 0xe0) PORT_SENSITIVITY(100) PORT_KEYDELTA(4) PORT_REVERSE INPUT_PORTS_END static const gfx_layout charlayout = { 8,8, RGN_FRAC(1,2), 4, { RGN_FRAC(1,2)+8, RGN_FRAC(1,2), 8, 0 }, { STEP8(0,1) }, { STEP8(0,8*2) }, 8*8*2 /* every char takes 8 consecutive bytes */ }; static const gfx_layout tilelayout = { 16,16, RGN_FRAC(1,2), 4, { RGN_FRAC(1,2)+8, RGN_FRAC(1,2), 8, 0 }, { STEP8(16*8*2,1), STEP8(0,1) }, { STEP16(0,8*2) }, 16*16*2 }; static GFXDECODE_START( gfx_backfire ) GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 128 ) /* Characters 8x8 */ GFXDECODE_ENTRY( "gfx1", 0, tilelayout, 0, 128 ) /* Tiles 16x16 */ GFXDECODE_ENTRY( "gfx2", 0, charlayout, 0, 128 ) /* Characters 8x8 */ GFXDECODE_ENTRY( "gfx2", 0, tilelayout, 0, 128 ) /* Tiles 16x16 */ GFXDECODE_ENTRY( "gfx3", 0, tilelayout, 0x200, 32 ) /* Sprites 16x16 (screen 1) */ GFXDECODE_ENTRY( "gfx4", 0, tilelayout, 0x600, 32 ) /* Sprites 16x16 (screen 2) */ GFXDECODE_END WRITE_LINE_MEMBER(backfire_state::vbl_interrupt) { if (state) m_maincpu->set_input_line(ARM_IRQ_LINE, ASSERT_LINE); } WRITE32_MEMBER(backfire_state::irq_ack_w) { m_maincpu->set_input_line(ARM_IRQ_LINE, CLEAR_LINE); } DECO16IC_BANK_CB_MEMBER(backfire_state::bank_callback) { // osd_printf_debug("bank callback %04x\n",bank); // bit 1 gets set too? bank = bank >> 4; bank = (bank & 1) | ((bank & 4) >> 1) | ((bank & 2) << 1); return bank * 0x1000; } DECOSPR_PRIORITY_CB_MEMBER(backfire_state::pri_callback) { switch (pri & 0xc000) { case 0x0000: return 0; // numbers, people, cars when in the air, status display.. case 0x4000: return 0xf0; // cars most of the time case 0x8000: return 0; // car wheels during jump? case 0xc000: return 0xf0; // car wheels in race? } return 0; } void backfire_state::machine_start() { } void backfire_state::backfire(machine_config &config) { /* basic machine hardware */ ARM(config, m_maincpu, 28000000/4); /* Unconfirmed */ m_maincpu->set_addrmap(AS_PROGRAM, &backfire_state::backfire_map); EEPROM_93C46_16BIT(config, "eeprom"); ADC0808(config, m_adc, 1000000); // unknown clock m_adc->in_callback<0>().set_ioport("PADDLE0"); m_adc->in_callback<1>().set_ioport("PADDLE1"); /* video hardware */ PALETTE(config, m_palette).set_format(palette_device::xBGR_555, 2048); GFXDECODE(config, "gfxdecode", m_palette, gfx_backfire); config.set_default_layout(layout_dualhsxs); SCREEN(config, m_lscreen, SCREEN_TYPE_RASTER); m_lscreen->set_refresh_hz(60); m_lscreen->set_vblank_time(ATTOSECONDS_IN_USEC(2500) /* not accurate */); m_lscreen->set_size(40*8, 32*8); m_lscreen->set_visarea(0*8, 40*8-1, 1*8, 31*8-1); m_lscreen->set_screen_update(FUNC(backfire_state::screen_update_left)); m_lscreen->set_palette(m_palette); m_lscreen->screen_vblank().set(FUNC(backfire_state::vbl_interrupt)); screen_device &rscreen(SCREEN(config, "rscreen", SCREEN_TYPE_RASTER)); rscreen.set_refresh_hz(60); rscreen.set_vblank_time(ATTOSECONDS_IN_USEC(2500) /* not accurate */); rscreen.set_size(40*8, 32*8); rscreen.set_visarea(0*8, 40*8-1, 1*8, 31*8-1); rscreen.set_screen_update(FUNC(backfire_state::screen_update_right)); rscreen.set_palette(m_palette); DECO16IC(config, m_deco_tilegen[0], 0); m_deco_tilegen[0]->set_screen(m_lscreen); m_deco_tilegen[0]->set_pf1_size(DECO_64x32); m_deco_tilegen[0]->set_pf2_size(DECO_64x32); m_deco_tilegen[0]->set_pf1_trans_mask(0x0f); m_deco_tilegen[0]->set_pf2_trans_mask(0x0f); m_deco_tilegen[0]->set_pf1_col_bank(0x00); m_deco_tilegen[0]->set_pf2_col_bank(0x40); m_deco_tilegen[0]->set_pf1_col_mask(0x0f); m_deco_tilegen[0]->set_pf2_col_mask(0x0f); m_deco_tilegen[0]->set_bank1_callback(FUNC(backfire_state::bank_callback)); m_deco_tilegen[0]->set_bank2_callback(FUNC(backfire_state::bank_callback)); m_deco_tilegen[0]->set_pf12_8x8_bank(0); m_deco_tilegen[0]->set_pf12_16x16_bank(1); m_deco_tilegen[0]->set_gfxdecode_tag("gfxdecode"); DECO16IC(config, m_deco_tilegen[1], 0); m_deco_tilegen[1]->set_screen(m_lscreen); m_deco_tilegen[1]->set_pf1_size(DECO_64x32); m_deco_tilegen[1]->set_pf2_size(DECO_64x32); m_deco_tilegen[1]->set_pf1_trans_mask(0x0f); m_deco_tilegen[1]->set_pf2_trans_mask(0x0f); m_deco_tilegen[1]->set_pf1_col_bank(0x10); m_deco_tilegen[1]->set_pf2_col_bank(0x50); m_deco_tilegen[1]->set_pf1_col_mask(0x0f); m_deco_tilegen[1]->set_pf2_col_mask(0x0f); m_deco_tilegen[1]->set_bank1_callback(FUNC(backfire_state::bank_callback)); m_deco_tilegen[1]->set_bank2_callback(FUNC(backfire_state::bank_callback)); m_deco_tilegen[1]->set_pf12_8x8_bank(2); m_deco_tilegen[1]->set_pf12_16x16_bank(3); m_deco_tilegen[1]->set_gfxdecode_tag("gfxdecode"); DECO_SPRITE(config, m_sprgen[0], 0); m_sprgen[0]->set_screen(m_lscreen); m_sprgen[0]->set_gfx_region(4); m_sprgen[0]->set_pri_callback(FUNC(backfire_state::pri_callback)); m_sprgen[0]->set_gfxdecode_tag("gfxdecode"); DECO_SPRITE(config, m_sprgen[1], 0); m_sprgen[1]->set_screen("rscreen"); m_sprgen[1]->set_gfx_region(5); m_sprgen[1]->set_pri_callback(FUNC(backfire_state::pri_callback)); m_sprgen[1]->set_gfxdecode_tag("gfxdecode"); /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); ymz280b_device &ymz(YMZ280B(config, "ymz", 28000000 / 2)); ymz.add_route(0, "lspeaker", 1.0); ymz.add_route(1, "rspeaker", 1.0); } /* Backfire! Data East, 1995 This game is similar to World Rally, Blomby Car, Drift Out'94 etc PCB Layout ---------- DE-0432-2 --------------------------------------------------------------------- | MBZ-06.19L 28.000MHz MBZ-04.19A * | | 52 | | 153 MBZ-03.18A + | | MBZ-05.17L | | | --| LC7881 YMZ280B-F 153 52 MBZ-04.16A * | | | --| MBZ-03.15A + | | CY7C185 (x2) | |J 141 | | MBZ-02.12A | |A | | MBZ-01.10A | |M 223 | | MBZ-00.9A | |M 93C45.8M CY7C185 (x2) 141 | | | |A | | | --| | | | --| TSW1 | | CY7C185 (x4) | | 156 | | ADC0808 RA01-0.3J | | RA00-0.2J | |CONN2 CONN1 D4701 | | | --------------------------------------------------------------------- Notes: CONN1 & CONN2: For connection of potentiometer or opto steering wheel. Joystick (via JAMMA) can also be used for controls. TSW1: Push Button TEST switch to access options menu (coins/lives etc). * : These ROMs have identical contents AND identical halves. + : These ROMs have identical contents AND identical halves. */ ROM_START( backfire ) ROM_REGION( 0x100000, "maincpu", 0 ) /* DE156 code (encrypted) */ ROM_LOAD32_WORD( "ra00-0.2j", 0x000002, 0x080000, CRC(790da069) SHA1(84fd90fb1833b97459cb337fdb92f7b6e93b5936) ) ROM_LOAD32_WORD( "ra01-0.3j", 0x000000, 0x080000, CRC(447cb57b) SHA1(1d503b9cf1cadd3fdd7c9d6d59d4c40a59fa25ab)) ROM_REGION( 0x400000, "gfx1", 0 ) /* Tiles 1 */ ROM_LOAD( "mbz-00.9a", 0x000000, 0x080000, CRC(1098d504) SHA1(1fecd26b92faffce0b59a8a9646bfd457c17c87c) ) ROM_CONTINUE( 0x200000, 0x080000) ROM_CONTINUE( 0x100000, 0x080000) ROM_CONTINUE( 0x300000, 0x080000) ROM_LOAD( "mbz-01.10a", 0x080000, 0x080000, CRC(19b81e5c) SHA1(4c8204a6a4ad30b23fbfdd79c6e39581e23de6ae) ) ROM_CONTINUE( 0x280000, 0x080000) ROM_CONTINUE( 0x180000, 0x080000) ROM_CONTINUE( 0x380000, 0x080000) ROM_REGION( 0x100000, "gfx2", 0 ) /* Tiles 2 */ ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) ) ROM_REGION( 0x400000, "gfx3", 0 ) /* Sprites 1 */ ROM_LOAD( "mbz-03.15a", 0x000000, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD( "mbz-04.16a", 0x200000, 0x200000, CRC(67bdafb1) SHA1(9729c18f3153e4bba703a6f46ad0b886c52d84e2) ) ROM_REGION( 0x400000, "gfx4", 0 ) /* Sprites 2 */ ROM_LOAD( "mbz-03.18a", 0x000000, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD( "mbz-04.19a", 0x200000, 0x200000, CRC(67bdafb1) SHA1(9729c18f3153e4bba703a6f46ad0b886c52d84e2) ) ROM_REGION( 0x400000, "ymz", ROMREGION_ERASEFF ) /* samples */ ROM_LOAD( "mbz-05.17l", 0x000000, 0x200000, CRC(947c1da6) SHA1(ac36006e04dc5e3990f76539763cc76facd08376) ) ROM_LOAD( "mbz-06.19l", 0x200000, 0x080000, CRC(4a38c635) SHA1(7f0fb6a7a4aa6774c04fa38e53ceff8744fe1e9f) ) ROM_REGION( 0x0600, "plds", 0 ) ROM_LOAD( "gal16v8b.6b", 0x0000, 0x0117, NO_DUMP ) /* PAL is read protected */ ROM_LOAD( "gal16v8b.6d", 0x0200, 0x0117, NO_DUMP ) /* PAL is read protected */ ROM_LOAD( "gal16v8b.12n", 0x0400, 0x0117, NO_DUMP ) /* PAL is read protected */ ROM_END // different test mode font color ROM_START( backfirea ) ROM_REGION( 0x100000, "maincpu", 0 ) /* DE156 code (encrypted) */ ROM_LOAD32_WORD( "rb-00h.h2", 0x000002, 0x080000, CRC(60973046) SHA1(e70d9be9cb172920da2a2ac9d317768b1438c59d) ) ROM_LOAD32_WORD( "rb-01l.h3", 0x000000, 0x080000, CRC(27472f60) SHA1(d73b1e68dc51e28b1148db39ce22bd2e93f6fd0a) ) ROM_REGION( 0x400000, "gfx1", 0 ) /* Tiles 1 */ ROM_LOAD( "mbz-00.9a", 0x000000, 0x080000, CRC(1098d504) SHA1(1fecd26b92faffce0b59a8a9646bfd457c17c87c) ) ROM_CONTINUE( 0x200000, 0x080000) ROM_CONTINUE( 0x100000, 0x080000) ROM_CONTINUE( 0x300000, 0x080000) ROM_LOAD( "mbz-01.10a", 0x080000, 0x080000, CRC(19b81e5c) SHA1(4c8204a6a4ad30b23fbfdd79c6e39581e23de6ae) ) ROM_CONTINUE( 0x280000, 0x080000) ROM_CONTINUE( 0x180000, 0x080000) ROM_CONTINUE( 0x380000, 0x080000) ROM_REGION( 0x100000, "gfx2", 0 ) /* Tiles 2 */ ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) ) ROM_REGION( 0x400000, "gfx3", 0 ) /* Sprites 1 */ ROM_LOAD( "mbz-03.15a", 0x000000, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD( "mbz-04.16a", 0x200000, 0x200000, CRC(67bdafb1) SHA1(9729c18f3153e4bba703a6f46ad0b886c52d84e2) ) ROM_REGION( 0x400000, "gfx4", 0 ) /* Sprites 2 */ ROM_LOAD( "mbz-03.18a", 0x000000, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD( "mbz-04.19a", 0x200000, 0x200000, CRC(67bdafb1) SHA1(9729c18f3153e4bba703a6f46ad0b886c52d84e2) ) ROM_REGION( 0x400000, "ymz", ROMREGION_ERASEFF ) /* samples */ ROM_LOAD( "mbz-05.17l", 0x000000, 0x200000, CRC(947c1da6) SHA1(ac36006e04dc5e3990f76539763cc76facd08376) ) ROM_LOAD( "mbz-06.19l", 0x200000, 0x080000, CRC(4a38c635) SHA1(7f0fb6a7a4aa6774c04fa38e53ceff8744fe1e9f) ) ROM_END void backfire_state::descramble_sound() { uint8_t *rom = memregion("ymz")->base(); int length = 0x200000; // only the first rom is swapped on backfire! std::vector buf1(length); uint32_t x; for (x = 0; x < length; x++) { uint32_t addr; addr = bitswap<24> (x,23,22,21,0, 20, 19,18,17,16, 15,14,13,12, 11,10,9, 8, 7, 6, 5, 4, 3, 2, 1 ); buf1[addr] = rom[x]; } memcpy(rom, &buf1[0], length); } READ32_MEMBER(backfire_state::backfire_speedup_r) { //osd_printf_debug( "%08x\n",m_maincpu->pc()); if (m_maincpu->pc() == 0xce44) m_maincpu->spin_until_time(attotime::from_usec(400)); // backfire if (m_maincpu->pc() == 0xcee4) m_maincpu->spin_until_time(attotime::from_usec(400)); // backfirea return m_mainram[0x18/4]; } void backfire_state::init_backfire() { deco56_decrypt_gfx(machine(), "gfx1"); /* 141 */ deco56_decrypt_gfx(machine(), "gfx2"); /* 141 */ deco156_decrypt(machine()); m_maincpu->set_clock_scale(4.0f); /* core timings aren't accurate */ descramble_sound(); m_maincpu->space(AS_PROGRAM).install_read_handler(0x0170018, 0x017001b, read32_delegate(*this, FUNC(backfire_state::backfire_speedup_r))); } GAME( 1995, backfire, 0, backfire, backfire, backfire_state, init_backfire, ROT0, "Data East Corporation", "Backfire! (Japan, set 1)", MACHINE_SUPPORTS_SAVE ) GAME( 1995, backfirea, backfire, backfire, backfire, backfire_state, init_backfire, ROT0, "Data East Corporation", "Backfire! (Japan, set 2)", MACHINE_SUPPORTS_SAVE ) // defaults to wheel controls, must change to joystick to play