// 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 */ #define DE156CPU ARM #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 "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_sprgen(*this, "spritegen"), m_sprgen2(*this, "spritegen2"), m_maincpu(*this, "maincpu"), m_deco_tilegen1(*this, "tilegen1"), m_deco_tilegen2(*this, "tilegen2"), 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); DECLARE_READ32_MEMBER(pf1_rowscroll_r); DECLARE_READ32_MEMBER(pf2_rowscroll_r); DECLARE_READ32_MEMBER(pf3_rowscroll_r); DECLARE_READ32_MEMBER(pf4_rowscroll_r); DECLARE_WRITE32_MEMBER(pf1_rowscroll_w); DECLARE_WRITE32_MEMBER(pf2_rowscroll_w); DECLARE_WRITE32_MEMBER(pf3_rowscroll_w); DECLARE_WRITE32_MEMBER(pf4_rowscroll_w); DECLARE_READ32_MEMBER(spriteram1_r); DECLARE_WRITE32_MEMBER(spriteram1_w); DECLARE_READ32_MEMBER(spriteram2_r); DECLARE_WRITE32_MEMBER(spriteram2_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(deco32_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_1; std::unique_ptr m_spriteram_2; required_shared_ptr m_mainram; required_shared_ptr m_left_priority; required_shared_ptr m_right_priority; optional_device m_sprgen; optional_device m_sprgen2; /* video related */ std::unique_ptr m_left; std::unique_ptr m_right; /* devices */ required_device m_maincpu; required_device m_deco_tilegen1; required_device m_deco_tilegen2; required_device m_eeprom; required_device m_adc; required_device m_palette; required_device m_lscreen; /* memory */ uint16_t m_pf1_rowscroll[0x0800/2]; uint16_t m_pf2_rowscroll[0x0800/2]; uint16_t m_pf3_rowscroll[0x0800/2]; uint16_t m_pf4_rowscroll[0x0800/2]; }; //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_1 = std::make_unique(0x2000/2); m_spriteram_2 = std::make_unique(0x2000/2); /* and register the allocated ram so that save states still work */ save_item(NAME(m_pf1_rowscroll)); save_item(NAME(m_pf2_rowscroll)); save_item(NAME(m_pf3_rowscroll)); save_item(NAME(m_pf4_rowscroll)); m_left = std::make_unique(80*8, 32*8); m_right = std::make_unique(80*8, 32*8); save_pointer(NAME(m_spriteram_1.get()), 0x2000/2); save_pointer(NAME(m_spriteram_2.get()), 0x2000/2); save_item(NAME(*m_left)); save_item(NAME(*m_right)); } uint32_t backfire_state::screen_update_left(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) { // sprites are flipped relative to tilemaps m_sprgen->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_tilegen1->pf_update(m_pf1_rowscroll, m_pf2_rowscroll); m_deco_tilegen2->pf_update(m_pf3_rowscroll, m_pf4_rowscroll); screen.priority().fill(0); bitmap.fill(0x100, cliprect); if (m_left_priority[0] == 0) { m_deco_tilegen2->tilemap_1_draw(screen, bitmap, cliprect, 0, 1); m_deco_tilegen1->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_sprgen->draw_sprites(bitmap, cliprect, m_spriteram_1.get(), 0x800); } else if (m_left_priority[0] == 2) { m_deco_tilegen1->tilemap_1_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen2->tilemap_1_draw(screen, bitmap, cliprect, 0, 4); m_sprgen->draw_sprites(bitmap, cliprect, m_spriteram_1.get(), 0x800); } 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_sprgen2->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_tilegen1->pf_update(m_pf1_rowscroll, m_pf2_rowscroll); m_deco_tilegen2->pf_update(m_pf3_rowscroll, m_pf4_rowscroll); screen.priority().fill(0); bitmap.fill(0x500, cliprect); if (m_right_priority[0] == 0) { m_deco_tilegen2->tilemap_2_draw(screen, bitmap, cliprect, 0, 1); m_deco_tilegen1->tilemap_2_draw(screen, bitmap, cliprect, 0, 2); m_sprgen2->draw_sprites(bitmap, cliprect, m_spriteram_2.get(), 0x800); } else if (m_right_priority[0] == 2) { m_deco_tilegen1->tilemap_2_draw(screen, bitmap, cliprect, 0, 2); m_deco_tilegen2->tilemap_2_draw(screen, bitmap, cliprect, 0, 4); m_sprgen2->draw_sprites(bitmap, cliprect, m_spriteram_2.get(), 0x800); } 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 */ READ32_MEMBER(backfire_state::pf1_rowscroll_r){ return m_pf1_rowscroll[offset] ^ 0xffff0000; } READ32_MEMBER(backfire_state::pf2_rowscroll_r){ return m_pf2_rowscroll[offset] ^ 0xffff0000; } READ32_MEMBER(backfire_state::pf3_rowscroll_r){ return m_pf3_rowscroll[offset] ^ 0xffff0000; } READ32_MEMBER(backfire_state::pf4_rowscroll_r){ return m_pf4_rowscroll[offset] ^ 0xffff0000; } WRITE32_MEMBER(backfire_state::pf1_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf1_rowscroll[offset]); } WRITE32_MEMBER(backfire_state::pf2_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf2_rowscroll[offset]); } WRITE32_MEMBER(backfire_state::pf3_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf3_rowscroll[offset]); } WRITE32_MEMBER(backfire_state::pf4_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf4_rowscroll[offset]); } READ32_MEMBER(backfire_state::pot_select_r) { if (!machine().side_effects_disabled()) m_adc->address_offset_start_w(space, offset, 0); return 0; } READ32_MEMBER(backfire_state::spriteram1_r) { return m_spriteram_1[offset] ^ 0xffff0000; } WRITE32_MEMBER(backfire_state::spriteram1_w) { data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_spriteram_1[offset]); } READ32_MEMBER(backfire_state::spriteram2_r) { return m_spriteram_2[offset] ^ 0xffff0000; } WRITE32_MEMBER(backfire_state::spriteram2_w) { data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_spriteram_2[offset]); } void backfire_state::backfire_map(address_map &map) { map(0x000000, 0x0fffff).rom(); map(0x100000, 0x10001f).rw(m_deco_tilegen1, FUNC(deco16ic_device::pf_control_dword_r), FUNC(deco16ic_device::pf_control_dword_w)); map(0x110000, 0x111fff).rw(m_deco_tilegen1, FUNC(deco16ic_device::pf1_data_dword_r), FUNC(deco16ic_device::pf1_data_dword_w)); map(0x114000, 0x115fff).rw(m_deco_tilegen1, FUNC(deco16ic_device::pf2_data_dword_r), FUNC(deco16ic_device::pf2_data_dword_w)); map(0x120000, 0x120fff).rw(this, FUNC(backfire_state::pf1_rowscroll_r), FUNC(backfire_state::pf1_rowscroll_w)); map(0x124000, 0x124fff).rw(this, FUNC(backfire_state::pf2_rowscroll_r), FUNC(backfire_state::pf2_rowscroll_w)); map(0x130000, 0x13001f).rw(m_deco_tilegen2, FUNC(deco16ic_device::pf_control_dword_r), FUNC(deco16ic_device::pf_control_dword_w)); map(0x140000, 0x141fff).rw(m_deco_tilegen2, FUNC(deco16ic_device::pf1_data_dword_r), FUNC(deco16ic_device::pf1_data_dword_w)); map(0x144000, 0x145fff).rw(m_deco_tilegen2, FUNC(deco16ic_device::pf2_data_dword_r), FUNC(deco16ic_device::pf2_data_dword_w)); map(0x150000, 0x150fff).rw(this, FUNC(backfire_state::pf3_rowscroll_r), FUNC(backfire_state::pf3_rowscroll_w)); map(0x154000, 0x154fff).rw(this, FUNC(backfire_state::pf4_rowscroll_r), FUNC(backfire_state::pf4_rowscroll_w)); 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(this, FUNC(backfire_state::spriteram1_r), FUNC(backfire_state::spriteram1_w)); map(0x188010, 0x188013).nopw(); // always 188010 ? map(0x18c000, 0x18dfff).rw(this, FUNC(backfire_state::spriteram2_r), FUNC(backfire_state::spriteram2_w)); map(0x190000, 0x190003).portr("IN0"); map(0x194000, 0x194003).portr("IN1"); map(0x1a4000, 0x1a4000).w(this, FUNC(backfire_state::eeprom_w)); map(0x1a8000, 0x1a8003).ram().share("left_priority"); map(0x1ac000, 0x1ac003).ram().share("right_priority"); map(0x1b0000, 0x1b0003).w(this, 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(this, 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 }, { 0, 1, 2, 3, 4, 5, 6, 7 }, { 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 }, 16*8 /* every char takes 8 consecutive bytes */ }; static const gfx_layout spritelayout = { 16,16, RGN_FRAC(1,1), 4, { 16, 0, 24, 8 }, { 64*8+0, 64*8+1, 64*8+2, 64*8+3, 64*8+4, 64*8+5, 64*8+6, 64*8+7, 0, 1, 2, 3, 4, 5, 6, 7 }, { 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32, 8*32, 9*32, 10*32, 11*32, 12*32, 13*32, 14*32, 15*32 }, 128*8 }; static const gfx_layout tilelayout = { 16,16, RGN_FRAC(1,2), 4, { RGN_FRAC(1,2)+8, RGN_FRAC(1,2), 8, 0 }, { 32*8+0, 32*8+1, 32*8+2, 32*8+3, 32*8+4, 32*8+5, 32*8+6, 32*8+7, 0, 1, 2, 3, 4, 5, 6, 7 }, { 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16, 8*16, 9*16, 10*16, 11*16, 12*16, 13*16, 14*16, 15*16 }, 64*8 }; 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, spritelayout, 0x200, 32 ) /* Sprites 16x16 (screen 1) */ GFXDECODE_ENTRY( "gfx4", 0, spritelayout, 0x600, 32 ) /* Sprites 16x16 (screen 2) */ GFXDECODE_END WRITE_LINE_MEMBER(backfire_state::deco32_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() { } MACHINE_CONFIG_START(backfire_state::backfire) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu", ARM, 28000000/4) /* Unconfirmed */ MCFG_DEVICE_PROGRAM_MAP(backfire_map) MCFG_EEPROM_SERIAL_93C46_ADD("eeprom") MCFG_DEVICE_ADD("adc", ADC0808, 1000000) // unknown clock MCFG_ADC0808_IN0_CB(IOPORT("PADDLE0")) MCFG_ADC0808_IN1_CB(IOPORT("PADDLE1")) /* video hardware */ MCFG_PALETTE_ADD("palette", 2048) MCFG_PALETTE_FORMAT(xBBBBBGGGGGRRRRR) MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_backfire) MCFG_DEFAULT_LAYOUT(layout_dualhsxs) MCFG_SCREEN_ADD("lscreen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MCFG_SCREEN_SIZE(40*8, 32*8) MCFG_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1) MCFG_SCREEN_UPDATE_DRIVER(backfire_state, screen_update_left) MCFG_SCREEN_PALETTE("palette") MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(*this, backfire_state, deco32_vbl_interrupt)) MCFG_SCREEN_ADD("rscreen", RASTER) MCFG_SCREEN_REFRESH_RATE(60) MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MCFG_SCREEN_SIZE(40*8, 32*8) MCFG_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1) MCFG_SCREEN_UPDATE_DRIVER(backfire_state, screen_update_right) MCFG_SCREEN_PALETTE("palette") MCFG_DEVICE_ADD("tilegen1", DECO16IC, 0) MCFG_DECO16IC_SET_SCREEN("lscreen") MCFG_DECO16IC_SPLIT(0) MCFG_DECO16IC_PF1_SIZE(DECO_64x32) MCFG_DECO16IC_PF2_SIZE(DECO_64x32) MCFG_DECO16IC_PF1_TRANS_MASK(0x0f) MCFG_DECO16IC_PF2_TRANS_MASK(0x0f) MCFG_DECO16IC_PF1_COL_BANK(0x00) MCFG_DECO16IC_PF2_COL_BANK(0x40) MCFG_DECO16IC_PF1_COL_MASK(0x0f) MCFG_DECO16IC_PF2_COL_MASK(0x0f) MCFG_DECO16IC_BANK1_CB(backfire_state, bank_callback) MCFG_DECO16IC_BANK2_CB(backfire_state, bank_callback) MCFG_DECO16IC_PF12_8X8_BANK(0) MCFG_DECO16IC_PF12_16X16_BANK(1) MCFG_DECO16IC_GFXDECODE("gfxdecode") MCFG_DEVICE_ADD("tilegen2", DECO16IC, 0) MCFG_DECO16IC_SET_SCREEN("lscreen") MCFG_DECO16IC_SPLIT(0) MCFG_DECO16IC_PF1_SIZE(DECO_64x32) MCFG_DECO16IC_PF2_SIZE(DECO_64x32) MCFG_DECO16IC_PF1_TRANS_MASK(0x0f) MCFG_DECO16IC_PF2_TRANS_MASK(0x0f) MCFG_DECO16IC_PF1_COL_BANK(0x10) MCFG_DECO16IC_PF2_COL_BANK(0x50) MCFG_DECO16IC_PF1_COL_MASK(0x0f) MCFG_DECO16IC_PF2_COL_MASK(0x0f) MCFG_DECO16IC_BANK1_CB(backfire_state, bank_callback) MCFG_DECO16IC_BANK2_CB(backfire_state, bank_callback) MCFG_DECO16IC_PF12_8X8_BANK(2) MCFG_DECO16IC_PF12_16X16_BANK(3) MCFG_DECO16IC_GFXDECODE("gfxdecode") MCFG_DEVICE_ADD("spritegen", DECO_SPRITE, 0) MCFG_VIDEO_SET_SCREEN("lscreen") MCFG_DECO_SPRITE_GFX_REGION(4) MCFG_DECO_SPRITE_PRIORITY_CB(backfire_state, pri_callback) MCFG_DECO_SPRITE_GFXDECODE("gfxdecode") MCFG_DEVICE_ADD("spritegen2", DECO_SPRITE, 0) MCFG_VIDEO_SET_SCREEN("rscreen") MCFG_DECO_SPRITE_GFX_REGION(5) MCFG_DECO_SPRITE_PRIORITY_CB(backfire_state, pri_callback) MCFG_DECO_SPRITE_GFXDECODE("gfxdecode") /* sound hardware */ SPEAKER(config, "lspeaker").front_left(); SPEAKER(config, "rspeaker").front_right(); MCFG_DEVICE_ADD("ymz", YMZ280B, 28000000 / 2) MCFG_SOUND_ROUTE(0, "lspeaker", 1.0) MCFG_SOUND_ROUTE(1, "rspeaker", 1.0) MACHINE_CONFIG_END /* 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_LOAD16_BYTE( "mbz-03.15a", 0x000001, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD16_BYTE( "mbz-04.16a", 0x000000, 0x200000, CRC(67bdafb1) SHA1(9729c18f3153e4bba703a6f46ad0b886c52d84e2) ) ROM_REGION( 0x400000, "gfx4", 0 ) /* Sprites 2 */ ROM_LOAD16_BYTE( "mbz-03.18a", 0x000001, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD16_BYTE( "mbz-04.19a", 0x000000, 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 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_LOAD16_BYTE( "mbz-03.15a", 0x000001, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD16_BYTE( "mbz-04.16a", 0x000000, 0x200000, CRC(67bdafb1) SHA1(9729c18f3153e4bba703a6f46ad0b886c52d84e2) ) ROM_REGION( 0x400000, "gfx4", 0 ) /* Sprites 2 */ ROM_LOAD16_BYTE( "mbz-03.18a", 0x000001, 0x200000, CRC(2e818569) SHA1(457c1cad25d9b21459262be8b5788969f566a996) ) ROM_LOAD16_BYTE( "mbz-04.19a", 0x000000, 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(FUNC(backfire_state::backfire_speedup_r), this)); } GAME( 1995, backfire, 0, backfire, backfire, backfire_state, init_backfire, ROT0, "Data East Corporation", "Backfire! (set 1)", MACHINE_SUPPORTS_SAVE ) GAME( 1995, backfirea, backfire, backfire, backfire, backfire_state, init_backfire, ROT0, "Data East Corporation", "Backfire! (set 2)", MACHINE_SUPPORTS_SAVE ) // defaults to wheel controls, must change to joystick to play