/* 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) (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" 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"){ } UINT8 m_nmi_enable; UINT8 m_start_lamp; UINT8 m_ldp_read_latch; UINT8 m_ldp_write_latch; UINT8 m_brake_gas; required_device m_laserdisc; required_shared_ptr m_sprite_ram; required_shared_ptr m_palette_ram; required_shared_ptr m_tile_ram; DECLARE_READ8_MEMBER(ldp_read); DECLARE_READ8_MEMBER(pedal_in); DECLARE_WRITE8_MEMBER(ldp_write); DECLARE_WRITE8_MEMBER(misc_io_write); DECLARE_WRITE8_MEMBER(brake_gas_write); DECLARE_WRITE8_MEMBER(palette_write); DECLARE_DRIVER_INIT(gpworld); virtual void machine_start(); UINT32 screen_update_gpworld(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect); INTERRUPT_GEN_MEMBER(vblank_callback_gpworld); TIMER_CALLBACK_MEMBER(irq_stop); }; /* Assumed to be the same as segald hardware */ #define GUESSED_CLOCK (5000000) /* VIDEO GOODS */ static void gpworld_draw_tiles(running_machine &machine, bitmap_rgb32 &bitmap,const rectangle &cliprect) { gpworld_state *state = machine.driver_data(); UINT8 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; drawgfx_transpen(bitmap, cliprect, machine.gfx[0], state->m_tile_ram[current_screen_character], characterY, 0, 0, characterX*8, characterY*8, 0); } } } INLINE void draw_pixel(running_machine &machine, 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.pix32(y, x) = machine.pens[color]; } static void gpworld_draw_sprites(running_machine &machine, bitmap_rgb32 &bitmap, const rectangle &cliprect) { gpworld_state *state = machine.driver_data(); 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 = state->flip_screen(); int i; UINT8 *GFX = state->memregion("gfx2")->base(); /* Heisted from Daphne which heisted it from MAME */ for (i = 0; i < 0x800; i += 8) { UINT8 *spr_reg = state->m_sprite_ram + i; if (spr_reg[SPR_Y_BOTTOM] && spr_reg[SPR_X_LO] != 0xff) { int row; 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 (row = 0; row < height; row++) { int x, y; int src2; src = src2 = src + skip; x = sx; y = sy+row; while (1) { int data_lo, data_high; UINT8 pixel1, pixel2, pixel3, pixel4; data_lo = GFX[(src2 & 0x7fff) | (sprite_bank << 16)]; data_high = GFX[(src2 & 0x7fff) | 0x8000 | (sprite_bank << 16)]; pixel1 = data_high >> 0x04; pixel2 = data_high & 0x0f; pixel3 = data_lo >> 0x04; pixel4 = data_lo & 0x0f; /* we'll see if this is still applicable */ if (src & 0x8000) { UINT8 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(machine, bitmap,cliprect,x+0,y,palette_get_color(machine, pixel1 + (sprite_color*0x10 + 0x200)),flip); draw_pixel(machine, bitmap,cliprect,x+1,y,palette_get_color(machine, pixel2 + (sprite_color*0x10 + 0x200)),flip); draw_pixel(machine, bitmap,cliprect,x+2,y,palette_get_color(machine, pixel3 + (sprite_color*0x10 + 0x200)),flip); draw_pixel(machine, bitmap,cliprect,x+3,y,palette_get_color(machine, 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 gpworld_state::screen_update_gpworld(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { bitmap.fill(0, cliprect); gpworld_draw_tiles(machine(), bitmap, cliprect); gpworld_draw_sprites(machine(), bitmap, cliprect); return 0; } void gpworld_state::machine_start() { } /* MEMORY HANDLERS */ /* READS */ READ8_MEMBER(gpworld_state::ldp_read) { return m_ldp_read_latch; } READ8_MEMBER(gpworld_state::pedal_in) { if (m_brake_gas) return ioport("INACCEL")->read(); return ioport("INBRAKE")->read(); } /* WRITES */ WRITE8_MEMBER(gpworld_state::ldp_write) { m_ldp_write_latch = data; } WRITE8_MEMBER(gpworld_state::misc_io_write) { 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); } WRITE8_MEMBER(gpworld_state::brake_gas_write) { m_brake_gas = data & 0x01; } WRITE8_MEMBER(gpworld_state::palette_write) { /* 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); */ palette_set_color(machine(), (pal_index & 0xffe) >> 1, MAKE_ARGB(a, r, g, b)); } /* PROGRAM MAP */ static ADDRESS_MAP_START( mainmem, AS_PROGRAM, 8, gpworld_state ) AM_RANGE(0x0000,0xbfff) AM_ROM AM_RANGE(0xc000,0xc7ff) AM_RAM AM_SHARE("sprite_ram") AM_RANGE(0xc800,0xcfff) AM_RAM_WRITE(palette_write) AM_SHARE("palette_ram") /* The memory test reads at 0xc800 */ AM_RANGE(0xd000,0xd7ff) AM_RAM AM_SHARE("tile_ram") AM_RANGE(0xd800,0xd800) AM_READWRITE(ldp_read,ldp_write) /* AM_RANGE(0xd801,0xd801) AM_READ_LEGACY(???) */ AM_RANGE(0xda00,0xda00) AM_READ_PORT("INWHEEL") //8255 here.... /* AM_RANGE(0xda01,0xda01) AM_WRITE_LEGACY(???) */ /* These inputs are interesting - there are writes and reads all over these addr's */ AM_RANGE(0xda02,0xda02) AM_WRITE(brake_gas_write) /*bit 0 select gas/brake input */ AM_RANGE(0xda20,0xda20) AM_READ(pedal_in) AM_RANGE(0xe000,0xffff) AM_RAM /* Potentially not all work RAM? */ ADDRESS_MAP_END /* I/O MAP */ static ADDRESS_MAP_START( mainport, AS_IO, 8, gpworld_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x01,0x01) AM_WRITE(misc_io_write) AM_RANGE(0x80,0x80) AM_READ_PORT("IN0") AM_RANGE(0x81,0x81) AM_READ_PORT("IN1") AM_RANGE(0x82,0x82) AM_READ_PORT("DSW1") AM_RANGE(0x83,0x83) AM_READ_PORT("DSW2") ADDRESS_MAP_END /* 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) { machine().device("maincpu")->execute().set_input_line(0, CLEAR_LINE); } INTERRUPT_GEN_MEMBER(gpworld_state::vblank_callback_gpworld) { /* 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->status_r(); device.execute().set_input_line(INPUT_LINE_NMI, PULSE_LINE); } /* 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); machine().scheduler().timer_set(attotime::from_usec(100), timer_expired_delegate(FUNC(gpworld_state::irq_stop),this)); } 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( gpworld ) GFXDECODE_ENTRY("gfx1", 0, gpworld_tile_layout, 0x0, 0x100) GFXDECODE_END /* DRIVER */ static MACHINE_CONFIG_START( gpworld, gpworld_state ) /* main cpu */ MCFG_CPU_ADD("maincpu", Z80, GUESSED_CLOCK) MCFG_CPU_PROGRAM_MAP(mainmem) MCFG_CPU_IO_MAP(mainport) MCFG_CPU_VBLANK_INT_DRIVER("screen", gpworld_state, vblank_callback_gpworld) MCFG_LASERDISC_LDV1000_ADD("laserdisc") MCFG_LASERDISC_OVERLAY_DRIVER(512, 256, gpworld_state, screen_update_gpworld) /* video hardware */ MCFG_LASERDISC_SCREEN_ADD_NTSC("screen", "laserdisc") MCFG_GFXDECODE(gpworld) MCFG_PALETTE_LENGTH(1024) /* sound hardware */ MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker") MCFG_SOUND_MODIFY("laserdisc") MCFG_SOUND_ROUTE(0, "lspeaker", 1.0) MCFG_SOUND_ROUTE(1, "rspeaker", 1.0) MACHINE_CONFIG_END 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 DRIVER_INIT_MEMBER(gpworld_state,gpworld) { m_nmi_enable = 0; m_start_lamp = 0; m_brake_gas = 0; m_ldp_write_latch = m_ldp_read_latch = 0; } /* YEAR NAME PARENT MACHINE INPUT INIT MONITOR COMPANY FULLNAME FLAGS) */ GAME( 1984, gpworld, 0, gpworld, gpworld, gpworld_state, gpworld, ROT0, "Sega", "GP World", GAME_NOT_WORKING|GAME_NO_SOUND)