diff options
Diffstat (limited to 'src/mame/sega/gpworld.cpp')
-rw-r--r-- | src/mame/sega/gpworld.cpp | 560 |
1 files changed, 560 insertions, 0 deletions
diff --git a/src/mame/sega/gpworld.cpp b/src/mame/sega/gpworld.cpp new file mode 100644 index 00000000000..afd86580e52 --- /dev/null +++ b/src/mame/sega/gpworld.cpp @@ -0,0 +1,560 @@ +// license:BSD-3-Clause +// copyright-holders:Andrew Gardner +/* +Sega GP World hardware +Driver by Andrew Gardner with help from Daphne Source. + +Notes: + - GP World is a rare game that came in a huge cabinet with two monitors, side by side. + The image from the laserdisc was stretched to an 8x3 aspect and graphics were overlayed + on top. + - The hardware is similar to Astron Belt but somewhat more powerful. + + +ToDo: + - Hook up start lamp to mame lamp system + - Do the gear shifter right + - What's up with the pedals being tied together? + - Daphne says this game is dual monitor. Is it? + - Finish sprite drawing - looks awfully similar to system1 and suprloco. + - Palette! + - Still some undocumented reads and writes - likely dealing with I/O. + - Convert to tilemaps. + +Dumping Notes: + GP World by Sega - Dumped by Matteo Marioni on Dec, 21 2001 + + 834-5515-01 + GP WORLD P. + SEGA No. 123743 + + Chip Label + 82S123 PR6146, PR6147 + 27128 EPR-6162A (the "A" letter is handwritten), EPR-6163, EPR-6164, EPR-6157, EPR-6155, EPR-6153 + EPR-6151, EPR-6149, EPR-6158, EPR-6156, EPR-6154, EPR-6152, EPR-6150 + 2732 EPR-6148 + 82S129 PR-5501 (located on video overlay pcb [834-5175]) + + (not dumped) + DMPAL16R6JC 315-5072.ic9, 315-5071.ic10 + DMPAL12H6JC 315-5070.ic97 +*/ + + +#include "emu.h" +#include "cpu/z80/z80.h" +#include "machine/ldv1000.h" +#include "emupal.h" +#include "speaker.h" + + +namespace { + +class gpworld_state : public driver_device +{ +public: + gpworld_state(const machine_config &mconfig, device_type type, const char *tag) + : driver_device(mconfig, type, tag), + m_laserdisc(*this, "laserdisc"), + m_sprite_ram(*this, "sprite_ram"), + m_palette_ram(*this, "palette_ram"), + m_tile_ram(*this, "tile_ram"), + m_maincpu(*this, "maincpu"), + m_gfxdecode(*this, "gfxdecode"), + m_palette(*this, "palette") + { + } + + void gpworld(machine_config &config); + +private: + virtual void machine_start() override ATTR_COLD; + virtual void driver_start() override; + + void mainmem(address_map &map) ATTR_COLD; + void mainport(address_map &map) ATTR_COLD; + + TIMER_CALLBACK_MEMBER(irq_stop); + + void ldp_write(uint8_t data); + void misc_io_write(uint8_t data); + void brake_gas_write(uint8_t data); + void palette_write(offs_t offset, uint8_t data); + + uint32_t screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); + INTERRUPT_GEN_MEMBER(vblank_callback); + void draw_tiles(bitmap_rgb32 &bitmap, const rectangle &cliprect); + void draw_pixel(bitmap_rgb32 &bitmap, const rectangle &cliprect, int x, int y, int color, int flip); + void draw_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect); + + emu_timer *m_irq_stop_timer = nullptr; + + required_device<pioneer_ldv1000_device> m_laserdisc; + required_shared_ptr<uint8_t> m_sprite_ram; + required_shared_ptr<uint8_t> m_palette_ram; + required_shared_ptr<uint8_t> m_tile_ram; + required_device<cpu_device> m_maincpu; + required_device<gfxdecode_device> m_gfxdecode; + required_device<palette_device> m_palette; + + uint8_t m_nmi_enable = 0; + uint8_t m_start_lamp = 0; + uint8_t m_ldp_read_latch = 0; + uint8_t m_ldp_write_latch = 0; + uint8_t m_brake_gas = 0; + uint8_t ldp_read(); + uint8_t pedal_in(); +}; + + +/* Assumed to be the same as segald hardware */ +#define GUESSED_CLOCK (5000000) + + + + + +/* VIDEO GOODS */ +void gpworld_state::draw_tiles(bitmap_rgb32 &bitmap,const rectangle &cliprect) +{ + uint8_t characterX, characterY; + + /* Temporarily set to 64 wide to accommodate two screens */ + for (characterX = 0; characterX < 64; characterX++) + { + for (characterY = 0; characterY < 32; characterY++) + { + int current_screen_character = (characterY*64) + characterX; + + m_gfxdecode->gfx(0)->transpen(bitmap,cliprect, m_tile_ram[current_screen_character], + characterY, 0, 0, characterX*8, characterY*8, 0); + } + } +} + +void gpworld_state::draw_pixel(bitmap_rgb32 &bitmap, const rectangle &cliprect, int x, int y, int color, int flip) +{ + if (flip) + { + x = bitmap.width() - x - 1; + y = bitmap.height() - y - 1; + } + + if (cliprect.contains(x, y)) + bitmap.pix(y, x) = m_palette->pen(color); +} + +void gpworld_state::draw_sprites(bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + const int SPR_Y_TOP = 0; + const int SPR_Y_BOTTOM = 1; + const int SPR_X_LO = 2; + const int SPR_X_HI = 3; + const int SPR_SKIP_LO = 4; + const int SPR_SKIP_HI = 5; + const int SPR_GFXOFS_LO = 6; + const int SPR_GFXOFS_HI = 7; + int flip = flip_screen(); + + uint8_t *GFX = memregion("gfx2")->base(); + + /* Heisted from Daphne which heisted it from MAME */ + for (int i = 0; i < 0x800; i += 8) + { + uint8_t *spr_reg = m_sprite_ram + i; + + if (spr_reg[SPR_Y_BOTTOM] && spr_reg[SPR_X_LO] != 0xff) + { + int src = spr_reg[SPR_GFXOFS_LO] + (spr_reg[SPR_GFXOFS_HI] << 8); + int skip = spr_reg[SPR_SKIP_LO] + (spr_reg[SPR_SKIP_HI] << 8); + + int height = spr_reg[SPR_Y_BOTTOM] - spr_reg[SPR_Y_TOP]; + int sy = spr_reg[SPR_Y_TOP] + 1; + int sx = spr_reg[SPR_X_LO] + ((spr_reg[SPR_X_HI] & 0x01) << 8) ; + + int sprite_color = (spr_reg[SPR_X_HI] >> 4) & 0x0f; + int sprite_bank = (spr_reg[SPR_X_HI] >> 1) & 0x07; + +/* + logerror("%x - %x = %x\n", spr_reg[SPR_Y_BOTTOM], spr_reg[SPR_Y_TOP], height); + logerror("Draw Sprite #%x with src %x, skip %x, height %x, y %x, x %x\n", i/8, src, skip, height, sy, sx); + + logerror("%02x %02x %02x %02x %02x %02x %02x %02x\n", spr_reg[SPR_Y_TOP], spr_reg[SPR_Y_BOTTOM], spr_reg[SPR_X_LO], spr_reg[SPR_X_HI], + spr_reg[SPR_SKIP_LO], spr_reg[SPR_SKIP_HI], spr_reg[SPR_GFXOFS_LO], spr_reg[SPR_GFXOFS_HI]); + draw_pixel(bitmap,cliprect,sx,sy,0xffffffff,flip); +*/ + + for (int row = 0; row < height; row++) + { + int src2 = src + skip; + src = src2; + + int x = sx; + int y = sy+row; + + while (1) + { + uint8_t data_lo = GFX[(src2 & 0x7fff) | (sprite_bank << 16)]; + uint8_t data_high = GFX[(src2 & 0x7fff) | 0x8000 | (sprite_bank << 16)]; + + uint8_t pixel1 = data_high >> 0x04; + uint8_t pixel2 = data_high & 0x0f; + uint8_t pixel3 = data_lo >> 0x04; + uint8_t pixel4 = data_lo & 0x0f; + + /* we'll see if this is still applicable */ + if (src & 0x8000) + { + uint8_t temp_pixel; + temp_pixel = pixel1; + pixel1 = pixel4; + pixel4 = temp_pixel; + + temp_pixel = pixel2; + pixel2 = pixel3; + pixel3 = temp_pixel; + + src2--; + } + else + { + src2++; + } + + /* Daphne says "don't draw the pixel if it's black". */ + draw_pixel(bitmap, cliprect, x+0, y, m_palette->pen_color(pixel1 + sprite_color * 0x10 + 0x200), flip); + draw_pixel(bitmap, cliprect, x+1, y, m_palette->pen_color(pixel2 + sprite_color * 0x10 + 0x200), flip); + draw_pixel(bitmap, cliprect, x+2, y, m_palette->pen_color(pixel3 + sprite_color * 0x10 + 0x200), flip); + draw_pixel(bitmap, cliprect, x+3, y, m_palette->pen_color(pixel4 + sprite_color * 0x10 + 0x200), flip); + + x += 4; + + /* stop drawing when the sprite data is 0xf */ + if ((data_lo & 0x0f) == 0x0f && !(src & 0x8000)) + { + break; + } + else if ((src & 0x8000) && (data_high & 0xf0) == 0xf0) + { + break; + } + } + } + } + } +} + + +uint32_t gpworld_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + bitmap.fill(0, cliprect); + + draw_tiles(bitmap, cliprect); + draw_sprites(bitmap, cliprect); + + return 0; +} + + +void gpworld_state::machine_start() +{ + m_irq_stop_timer = timer_alloc(FUNC(gpworld_state::irq_stop), this); +} + + +/* MEMORY HANDLERS */ +/* READS */ +uint8_t gpworld_state::ldp_read() +{ + return m_ldp_read_latch; +} + +uint8_t gpworld_state::pedal_in() +{ + if (m_brake_gas) + return ioport("INACCEL")->read(); + + return ioport("INBRAKE")->read(); + +} + +/* WRITES */ +void gpworld_state::ldp_write(uint8_t data) +{ + m_ldp_write_latch = data; +} + +void gpworld_state::misc_io_write(uint8_t data) +{ + m_start_lamp = (data & 0x04) >> 1; + m_nmi_enable = (data & 0x40) >> 6; + /* dunno = (data & 0x80) >> 7; */ //coin counter??? + + logerror("NMI : %x (0x%x)\n", m_nmi_enable, data); +} + +void gpworld_state::brake_gas_write(uint8_t data) +{ + m_brake_gas = data & 0x01; +} + +void gpworld_state::palette_write(offs_t offset, uint8_t data) +{ + /* This is all just a (bad) guess */ + int pal_index, r, g, b, a; + + m_palette_ram[offset] = data; + + /* "Round down" to the nearest palette entry */ + pal_index = offset & 0xffe; + + g = (m_palette_ram[pal_index] & 0xf0) << 0; + b = (m_palette_ram[pal_index] & 0x0f) << 4; + r = (m_palette_ram[pal_index+1] & 0x0f) << 4; + a = (m_palette_ram[pal_index+1] & 0x80) ? 0 : 255; /* guess */ + + /* logerror("PAL WRITE index : %x rgb : %d %d %d (real %x) at %x\n", pal_index, r,g,b, data, offset); */ + + m_palette->set_pen_color((pal_index & 0xffe) >> 1, rgb_t(a, r, g, b)); +} + +/* PROGRAM MAP */ +void gpworld_state::mainmem(address_map &map) +{ + map(0x0000, 0xbfff).rom(); + map(0xc000, 0xc7ff).ram().share("sprite_ram"); + map(0xc800, 0xcfff).ram().w(FUNC(gpworld_state::palette_write)).share("palette_ram"); /* The memory test reads at 0xc800 */ + map(0xd000, 0xd7ff).ram().share("tile_ram"); + map(0xd800, 0xd800).rw(FUNC(gpworld_state::ldp_read), FUNC(gpworld_state::ldp_write)); +/* map(0xd801, 0xd801).r(FUNC(gpworld_state::???)); */ + map(0xda00, 0xda00).portr("INWHEEL"); //8255 here.... +/* map(0xda01, 0xda01).w(FUNC(gpworld_state::???)); */ /* These inputs are interesting - there are writes and reads all over these addr's */ + map(0xda02, 0xda02).w(FUNC(gpworld_state::brake_gas_write)); /*bit 0 select gas/brake input */ + map(0xda20, 0xda20).r(FUNC(gpworld_state::pedal_in)); + + map(0xe000, 0xffff).ram(); /* Potentially not all work RAM? */ +} + + +/* I/O MAP */ +void gpworld_state::mainport(address_map &map) +{ + map.global_mask(0xff); + map(0x01, 0x01).w(FUNC(gpworld_state::misc_io_write)); + map(0x80, 0x80).portr("IN0"); + map(0x81, 0x81).portr("IN1"); + map(0x82, 0x82).portr("DSW1"); + map(0x83, 0x83).portr("DSW2"); +} + + +/* PORTS */ +static INPUT_PORTS_START( gpworld ) + PORT_START("IN0") + PORT_BIT ( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x10, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "SHIFT" ) PORT_CODE( KEYCODE_Q ) + PORT_BIT ( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) + + PORT_START("IN1") + PORT_BIT ( 0x01, IP_ACTIVE_LOW, IPT_COIN1 ) + PORT_BIT ( 0x02, IP_ACTIVE_LOW, IPT_COIN2 ) /* maybe? it's not listed in the test screen. */ + PORT_BIT ( 0x04, IP_ACTIVE_LOW, IPT_SERVICE ) + PORT_BIT ( 0x08, IP_ACTIVE_LOW, IPT_SERVICE1 ) + PORT_BIT ( 0x10, IP_ACTIVE_LOW, IPT_START1 ) + PORT_BIT ( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN ) + PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN ) + + PORT_START("INWHEEL") + PORT_BIT ( 0x01, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "SLIGHT RIGHT" ) PORT_CODE( KEYCODE_Y ) + PORT_BIT ( 0x02, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "MEDIUM RIGHT" ) PORT_CODE( KEYCODE_U ) + PORT_BIT ( 0x04, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "STRONG RIGHT" ) PORT_CODE( KEYCODE_I ) + PORT_BIT ( 0x08, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "FIERCE RIGHT" ) PORT_CODE( KEYCODE_O ) + PORT_BIT ( 0x10, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "SLIGHT LEFT" ) PORT_CODE( KEYCODE_T ) + PORT_BIT ( 0x20, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "MEDIUM LEFT" ) PORT_CODE( KEYCODE_R ) + PORT_BIT ( 0x40, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "STRONG LEFT" ) PORT_CODE( KEYCODE_E ) + PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_OTHER ) PORT_NAME( "FIERCE LEFT" ) PORT_CODE( KEYCODE_W ) + + PORT_START("INACCEL") + PORT_BIT( 0xff, 0x00, IPT_PEDAL ) PORT_SENSITIVITY(30) PORT_KEYDELTA(10) PORT_PLAYER(1) + + PORT_START("INBRAKE") + PORT_BIT( 0xff, 0x00, IPT_PEDAL2 ) PORT_SENSITIVITY(30) PORT_KEYDELTA(10) PORT_PLAYER(1) + + PORT_START("DSW1") + PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coin_A ) ) PORT_DIPLOCATION("SW1:1,2,3,4") + PORT_DIPSETTING( 0x70, DEF_STR( 4C_1C ) ) + PORT_DIPSETTING( 0x80, DEF_STR( 3C_1C ) ) + PORT_DIPSETTING( 0x90, DEF_STR( 2C_1C ) ) + PORT_DIPSETTING( 0x40, DEF_STR( 4C_3C ) ) + PORT_DIPSETTING( 0x50, "6 Coins/4 Credits" ) + PORT_DIPSETTING( 0xf0, DEF_STR( 1C_1C ) ) + PORT_DIPSETTING( 0x00, "1 Coin/1 Credit (again)" ) + PORT_DIPSETTING( 0x30, "5 Coins/6 Credits" ) + PORT_DIPSETTING( 0x20, DEF_STR( 4C_5C ) ) + PORT_DIPSETTING( 0x10, DEF_STR( 2C_3C ) ) + PORT_DIPSETTING( 0x60, "2 Coins/3 Credits (again)" ) + PORT_DIPSETTING( 0xe0, DEF_STR( 1C_2C ) ) + PORT_DIPSETTING( 0xd0, DEF_STR( 1C_3C ) ) + PORT_DIPSETTING( 0xc0, DEF_STR( 1C_4C ) ) + PORT_DIPSETTING( 0xb0, DEF_STR( 1C_5C ) ) + PORT_DIPSETTING( 0xa0, DEF_STR( 1C_6C ) ) + PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_B ) ) PORT_DIPLOCATION("SW1:5,6,7,8") + PORT_DIPSETTING( 0x07, DEF_STR( 4C_1C ) ) + PORT_DIPSETTING( 0x08, DEF_STR( 3C_1C ) ) + PORT_DIPSETTING( 0x09, DEF_STR( 2C_1C ) ) + PORT_DIPSETTING( 0x04, DEF_STR( 4C_3C ) ) + PORT_DIPSETTING( 0x05, "6 Coins/4 Credits" ) + PORT_DIPSETTING( 0x0f, DEF_STR( 1C_1C ) ) + PORT_DIPSETTING( 0x00, "1 Coin/1 Credit (again)" ) + PORT_DIPSETTING( 0x03, "5 Coins/6 Credits" ) + PORT_DIPSETTING( 0x02, DEF_STR( 4C_5C ) ) + PORT_DIPSETTING( 0x01, DEF_STR( 2C_3C ) ) + PORT_DIPSETTING( 0x06, "2 Coins/3 Credits (again)" ) + PORT_DIPSETTING( 0x0e, DEF_STR( 1C_2C ) ) + PORT_DIPSETTING( 0x0d, DEF_STR( 1C_3C ) ) + PORT_DIPSETTING( 0x0c, DEF_STR( 1C_4C ) ) + PORT_DIPSETTING( 0x0b, DEF_STR( 1C_5C ) ) + PORT_DIPSETTING( 0x0a, DEF_STR( 1C_6C ) ) + + PORT_START("DSW2") + PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SW2:1") + PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x60, 0x60, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SW2:2,3") + PORT_DIPSETTING( 0x40, DEF_STR( Easy ) ) + PORT_DIPSETTING( 0x60, DEF_STR( Medium ) ) + PORT_DIPSETTING( 0x20, DEF_STR( Hard ) ) + PORT_DIPSETTING( 0x00, DEF_STR( Hardest ) ) + PORT_DIPNAME( 0x80, 0x80, "Start Year #" ) PORT_DIPLOCATION("SW2:4") + PORT_DIPSETTING( 0x80, "1984" ) + PORT_DIPSETTING( 0x00, "1985" ) + PORT_DIPNAME( 0x01, 0x01, "Steering Difficulty" ) PORT_DIPLOCATION("SW2:5") + PORT_DIPSETTING( 0x01, DEF_STR( Medium ) ) + PORT_DIPSETTING( 0x00, DEF_STR( Hard ) ) + PORT_DIPNAME( 0x02, 0x02, "Rank to advance" ) PORT_DIPLOCATION("SW2:6") + PORT_DIPSETTING( 0x02, "Fourth" ) + PORT_DIPSETTING( 0x00, "Third" ) + PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:7") + PORT_DIPSETTING( 0x04, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) + PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) ) PORT_DIPLOCATION("SW2:8") + PORT_DIPSETTING( 0x08, DEF_STR( Off ) ) + PORT_DIPSETTING( 0x00, DEF_STR( On ) ) +INPUT_PORTS_END + +TIMER_CALLBACK_MEMBER(gpworld_state::irq_stop) +{ + m_maincpu->set_input_line(0, CLEAR_LINE); +} + +INTERRUPT_GEN_MEMBER(gpworld_state::vblank_callback) +{ + /* Do an NMI if the enabled bit is set */ + if (m_nmi_enable) + { + m_laserdisc->data_w(m_ldp_write_latch); + m_ldp_read_latch = m_laserdisc->data_r(); + device.execute().pulse_input_line(INPUT_LINE_NMI, attotime::zero); + } + + /* The time the IRQ line stays high is set just long enough to happen after the NMI - hacky? */ + device.execute().set_input_line(0, ASSERT_LINE); + m_irq_stop_timer->adjust(attotime::from_usec(100)); +} + +static const gfx_layout gpworld_tile_layout = +{ + 8,8, + 0x800/8, + 2, + { 0x800*8, 0 }, + { 0,1,2,3,4,5,6,7 }, + { 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 }, + 8*8 +}; + +static GFXDECODE_START( gfx_gpworld ) + GFXDECODE_ENTRY("gfx1", 0, gpworld_tile_layout, 0x0, 0x100) +GFXDECODE_END + +/* DRIVER */ +void gpworld_state::gpworld(machine_config &config) +{ + /* main cpu */ + Z80(config, m_maincpu, GUESSED_CLOCK); + m_maincpu->set_addrmap(AS_PROGRAM, &gpworld_state::mainmem); + m_maincpu->set_addrmap(AS_IO, &gpworld_state::mainport); + m_maincpu->set_vblank_int("screen", FUNC(gpworld_state::vblank_callback)); + + + PIONEER_LDV1000(config, m_laserdisc, 0); + m_laserdisc->set_overlay(512, 256, FUNC(gpworld_state::screen_update)); + m_laserdisc->add_route(0, "speaker", 1.0, 0); + m_laserdisc->add_route(1, "speaker", 1.0, 1); + + /* video hardware */ + m_laserdisc->add_ntsc_screen(config, "screen"); + + GFXDECODE(config, m_gfxdecode, m_palette, gfx_gpworld); + PALETTE(config, m_palette).set_entries(1024); + + /* sound hardware */ + SPEAKER(config, "speaker", 2).front(); +} + + +ROM_START( gpworld ) + ROM_REGION( 0xc000, "maincpu", 0 ) + ROM_LOAD( "epr6162a.ic51", 0x0000, 0x4000, CRC(70e42574) SHA1(2fa50c7a67a2efb6b2c313850ace40e42d18b0a8) ) + ROM_LOAD( "epr6163.ic67", 0x4000, 0x4000, CRC(49539e46) SHA1(7cfd5b6b356c3fa5439e6fe3ac2e6a097b722a2c) ) + ROM_LOAD( "epr6164.ic83", 0x8000, 0x4000, CRC(7f0e6853) SHA1(c255ac6e4b61faa8da9b5aa70f12c868b81acfe1) ) + + /* Tiles */ + ROM_REGION( 0x1000, "gfx1", 0 ) + ROM_LOAD( "epr6148.ic18", 0x0000, 0x1000, CRC(a4b11cf5) SHA1(9697494335089b13071d773812eec373ef5b358c) ) + + /* Sprites */ + ROM_REGION( 0x30000, "gfx2", 0 ) + ROM_LOAD( "epr6149.ic111", 0x00000, 0x4000, CRC(7e6c4797) SHA1(acf934e1f3f55a0d1cd1630f6a78f9954f1ec53f) ) + ROM_LOAD( "epr6151.ic110", 0x04000, 0x4000, CRC(26d72b96) SHA1(759ef85877edfc37f2a1a242bf1c9b0e8d5e9a88) ) + ROM_LOAD( "epr6150.ic128", 0x08000, 0x4000, CRC(6837e095) SHA1(b2ac8341fcf0037d186b0759227597643ca0336d) ) + ROM_LOAD( "epr6152.ic127", 0x0c000, 0x4000, CRC(86939fe2) SHA1(07527297262297562e052672976fd6f7124f5c7b) ) + ROM_LOAD( "epr6153.ic109", 0x10000, 0x4000, CRC(f52b7c1b) SHA1(326c6b46e85ab12b43ae2b6b7a49055fe5c31431) ) + ROM_LOAD( "epr6155.ic108", 0x14000, 0x4000, CRC(a020bd03) SHA1(13cd81dc2df185d9ec989e69261d275b46e44075) ) + ROM_LOAD( "epr6154.ic126", 0x18000, 0x4000, CRC(bbf5d7db) SHA1(3dc50fa0dfe285cc741d9d6b9bac4a0ff6e3877f) ) + ROM_LOAD( "epr6156.ic125", 0x1c000, 0x4000, CRC(2c03c64c) SHA1(fa31e49385e004b6fb81c8d54cc6b64dfe1358d2) ) + ROM_LOAD( "epr6157.ic107", 0x20000, 0x4000, CRC(cdd31036) SHA1(722d843a1c524b0a689ab73bb7367c4ca33fc983) ) + /* ic106 Unpopulated? */ + ROM_LOAD( "epr6158.ic124", 0x28000, 0x4000, CRC(d15ac707) SHA1(170e0a851c3e845330f776a53ca619d16d025dd7) ) + /* ic123 Unpopulated? */ + + /* Misc PROMs */ + ROM_REGION( 0x0220, "proms", 0 ) + ROM_LOAD( "pr6146.ic2", 0x000, 0x020, CRC(d10801a0) SHA1(89e9ac0d9c9eee6efd5455a3416c436ceda8f632) ) + ROM_LOAD( "pr6147.ic28", 0x020, 0x100, CRC(b7173df9) SHA1(044beda43cb1793033021a08b3ee3441d5ffe6c3) ) + ROM_LOAD( "pr5501.ic14", 0x120, 0x100, CRC(1bdf71d4) SHA1(ac52e948cce6df4abb7543c08e2c6454efd63e79) ) + + DISK_REGION( "laserdisc" ) + DISK_IMAGE_READONLY( "gpworld", 0, NO_DUMP ) +ROM_END + + +void gpworld_state::driver_start() +{ + m_nmi_enable = 0; + m_start_lamp = 0; + m_brake_gas = 0; + m_ldp_write_latch = m_ldp_read_latch = 0; +} + +} // anonymous namespace + + +/* YEAR NAME PARENT MACHINE INPUT STATE INIT MONITOR COMPANY FULLNAME FLAGS) */ +GAME( 1984, gpworld, 0, gpworld, gpworld, gpworld_state, empty_init, ROT0, "Sega", "GP World", MACHINE_NOT_WORKING|MACHINE_NO_SOUND) |