/* Steel Force ELECTRONIC DEVICES 1994 Milano Italy ECOGAMES S.L. Barcelona, Spain driver by David Haywood inputs etc. by Stephane Humbert ---------------------------------------- 68000P12 processor 15mHZ cyrstal next to it 2 of these: TPC 1020AFN-084c 32MHz crystal colse to this. 1 GAL 5 PROMS (16S25H) 27c4001 u1, u27, u28, u29, u30 27c2001 u31,u32, u33, u34 27c010 u104, u105 ---------------------------------------- notes: lev 1 : 0x64 : 0000 0100 - just rte lev 2 : 0x68 : 0000 0100 - just rte lev 3 : 0x6c : 0000 0100 - just rte lev 4 : 0x70 : 0000 CBD6 - vblank lev 5 : 0x74 : 0000 0100 - just rte lev 6 : 0x78 : 0000 0100 - just rte lev 7 : 0x7c : 0000 0100 - just rte 2002.02.03 : There doesn't seem to be Dip Switches (you make the changes in the "test mode") Bits 8 to 15 of IN1 seem to be unused The 2nd part of the "test mode" ("sound and video") is in Spanish/Italian (I can't tell for the moment) Release date and manufacturers according to the title screen 2004.xx.10 - Pierpaolo Prazzoli - fixed bit 4 of IN1. it is vblank and it fixed scroll issue in attract mode - fixed sprite glitches with visible flag - added rows scroll - added eeprom - fixed sound banking TO DO : - unknown registers - clipping issues? - priority issues? - same sprites buffer used in Mighty Warriors - clocks don't match on the games? */ #include "driver.h" #include "cpu/m68000/m68000.h" #include "machine/eeprom.h" #include "sound/okim6295.h" UINT16 *stlforce_bg_videoram, *stlforce_mlow_videoram, *stlforce_mhigh_videoram, *stlforce_tx_videoram; UINT16 *stlforce_bg_scrollram, *stlforce_mlow_scrollram, *stlforce_mhigh_scrollram, *stlforce_vidattrram; UINT16 *stlforce_spriteram; static const UINT8 *default_eeprom; extern int stlforce_sprxoffs; VIDEO_START( stlforce ); VIDEO_UPDATE( stlforce ); WRITE16_HANDLER( stlforce_tx_videoram_w ); WRITE16_HANDLER( stlforce_mhigh_videoram_w ); WRITE16_HANDLER( stlforce_mlow_videoram_w ); WRITE16_HANDLER( stlforce_bg_videoram_w ); static WRITE16_HANDLER( eeprom_w ) { if( ACCESSING_BITS_0_7 ) { eeprom_write_bit(data & 0x01); eeprom_set_cs_line((data & 0x02) ? CLEAR_LINE : ASSERT_LINE ); eeprom_set_clock_line((data & 0x04) ? ASSERT_LINE : CLEAR_LINE ); } } static WRITE16_DEVICE_HANDLER( oki_bank_w ) { okim6295_set_bank_base(device, 0x40000 * ((data>>8) & 3)); } static ADDRESS_MAP_START( stlforce_map, ADDRESS_SPACE_PROGRAM, 16 ) AM_RANGE(0x000000, 0x03ffff) AM_ROM AM_RANGE(0x100000, 0x1007ff) AM_RAM_WRITE(stlforce_bg_videoram_w) AM_BASE(&stlforce_bg_videoram) AM_RANGE(0x100800, 0x100fff) AM_RAM_WRITE(stlforce_mlow_videoram_w) AM_BASE(&stlforce_mlow_videoram) AM_RANGE(0x101000, 0x1017ff) AM_RAM_WRITE(stlforce_mhigh_videoram_w) AM_BASE(&stlforce_mhigh_videoram) AM_RANGE(0x101800, 0x1027ff) AM_RAM_WRITE(stlforce_tx_videoram_w) AM_BASE(&stlforce_tx_videoram) AM_RANGE(0x102800, 0x102fff) AM_RAM /* unknown / ram */ AM_RANGE(0x103000, 0x1033ff) AM_RAM AM_BASE(&stlforce_bg_scrollram) AM_RANGE(0x103400, 0x1037ff) AM_RAM AM_BASE(&stlforce_mlow_scrollram) AM_RANGE(0x103800, 0x103bff) AM_RAM AM_BASE(&stlforce_mhigh_scrollram) AM_RANGE(0x103c00, 0x103fff) AM_RAM AM_BASE(&stlforce_vidattrram) AM_RANGE(0x104000, 0x104fff) AM_RAM_WRITE(paletteram16_xBBBBBGGGGGRRRRR_word_w) AM_BASE(&paletteram16) AM_RANGE(0x105000, 0x107fff) AM_RAM /* unknown / ram */ AM_RANGE(0x108000, 0x108fff) AM_RAM AM_BASE(&stlforce_spriteram) AM_RANGE(0x109000, 0x11ffff) AM_RAM AM_RANGE(0x400000, 0x400001) AM_READ_PORT("INPUT") AM_RANGE(0x400002, 0x400003) AM_READ_PORT("SYSTEM") AM_RANGE(0x400010, 0x400011) AM_WRITE(eeprom_w) AM_RANGE(0x400012, 0x400013) AM_DEVWRITE("oki", oki_bank_w) AM_RANGE(0x40001e, 0x40001f) AM_WRITENOP // sprites buffer commands AM_RANGE(0x410000, 0x410001) AM_DEVREADWRITE8("oki", okim6295_r, okim6295_w, 0x00ff) ADDRESS_MAP_END static INPUT_PORTS_START( stlforce ) PORT_START("INPUT") PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1) PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_START2 ) PORT_START("SYSTEM") PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_SERVICE_NO_TOGGLE( 0x0008, IP_ACTIVE_LOW ) PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_VBLANK ) PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(eeprom_bit_r, NULL) /* eeprom */ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END static const gfx_layout stlforce_bglayout = { 16,16, RGN_FRAC(1,1), 4, {0,1,2,3}, {12,8,4,0,28,24,20,16,16*32+12,16*32+8,16*32+4,16*32+0,16*32+28,16*32+24,16*32+20,16*32+16}, {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}, 32*32 }; static const gfx_layout stlforce_txlayout = { 8,8, RGN_FRAC(1,1), 4, {0,1,2,3}, {12,8,4,0,28,24,20,16}, {0*32,1*32,2*32,3*32,4*32,5*32,6*32,7*32 }, 8*32 }; static const gfx_layout stlforce_splayout = { 16,16, RGN_FRAC(1,4), 4, {0x040000*3*8,0x040000*2*8,0x040000*1*8,0x040000*0*8}, {16*8+7,16*8+6,16*8+5,16*8+4,16*8+3,16*8+2,16*8+1,16*8+0,7,6,5,4,3,2,1,0}, {0*8,1*8,2*8,3*8,4*8,5*8,6*8,7*8,8*8,9*8,10*8,11*8,12*8,13*8,14*8,15*8}, 32*8 }; static GFXDECODE_START( stlforce ) GFXDECODE_ENTRY( "gfx1", 0, stlforce_bglayout, 0, 256 ) GFXDECODE_ENTRY( "gfx1", 0, stlforce_txlayout, 0, 256 ) GFXDECODE_ENTRY( "gfx2", 0, stlforce_splayout, 0, 256 ) GFXDECODE_END static const UINT8 stlforce_default_eeprom[128] = { 0x7e, 0x01, 0x00, 0x00, 0x01, 0x03, 0x05, 0x01, 0x01, 0x00, 0x4e, 0x20, 0x00, 0x00, 0x4a, 0x4d, 0x42, 0x00, 0x02, 0x01, 0x4e, 0x20, 0x00, 0x00, 0x4d, 0x41, 0x43, 0x00, 0x02, 0x01, 0x00, 0x64, 0x00, 0x00, 0x41, 0x41, 0x41, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x41, 0x41, 0x41, 0x00, 0x00, 0x00, 0x00, 0x64, 0x00, 0x00, 0x41, 0x41, 0x41, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff }; static const UINT8 twinbrat_default_eeprom[128] = { 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x01, 0x00, 0x03, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x3d, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x6f }; static NVRAM_HANDLER( stlforce ) { if (read_or_write) eeprom_save(file); else { eeprom_init(machine, &eeprom_interface_93C46); if (file) { eeprom_load(file); } else { eeprom_set_data(default_eeprom,128); } } } static MACHINE_DRIVER_START( stlforce ) /* basic machine hardware */ MDRV_CPU_ADD("cpu", M68000, 15000000) MDRV_CPU_PROGRAM_MAP(stlforce_map,0) MDRV_CPU_VBLANK_INT("screen", irq4_line_hold) MDRV_NVRAM_HANDLER(stlforce) /* video hardware */ MDRV_SCREEN_ADD("screen", RASTER) MDRV_SCREEN_REFRESH_RATE(58) MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_SIZE(64*8, 32*8) MDRV_SCREEN_VISIBLE_AREA(1*8, 47*8-1, 0*8, 30*8-1) MDRV_GFXDECODE(stlforce) MDRV_PALETTE_LENGTH(0x800) MDRV_VIDEO_START(stlforce) MDRV_VIDEO_UPDATE(stlforce) /* sound hardware */ MDRV_SPEAKER_STANDARD_MONO("mono") MDRV_SOUND_ADD("oki", OKIM6295, 937500 ) MDRV_SOUND_CONFIG(okim6295_interface_pin7high) MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0) MACHINE_DRIVER_END static MACHINE_DRIVER_START( twinbrat ) /* basic machine hardware */ MDRV_IMPORT_FROM(stlforce) MDRV_CPU_REPLACE("cpu", M68000, 14745600) MDRV_SCREEN_MODIFY("screen") MDRV_SCREEN_VISIBLE_AREA(3*8, 45*8-1, 0*8, 30*8-1) MACHINE_DRIVER_END ROM_START( stlforce ) ROM_REGION( 0x80000, "cpu", 0 ) /* 68000 code */ ROM_LOAD16_BYTE( "stlforce.105", 0x00000, 0x20000, CRC(3ec804ca) SHA1(4efcf3321b7111644ac3ee0a83ad95d0571a4021) ) ROM_LOAD16_BYTE( "stlforce.104", 0x00001, 0x20000, CRC(69b5f429) SHA1(5bd20fad91a22f4d62f85a5190d72dd824ee26a5) ) ROM_REGION( 0x200000, "gfx1", ROMREGION_DISPOSE ) /* 16x16 bg tiles & 8x8 tx tiles merged */ ROM_LOAD16_BYTE( "stlforce.u27", 0x000001, 0x080000, CRC(c42ef365) SHA1(40e9ee29ea14b3bc2fbfa4e6acb7d680cf72f01a) ) ROM_LOAD16_BYTE( "stlforce.u28", 0x000000, 0x080000, CRC(6a4b7c98) SHA1(004d7f3c703c6abc79286fa58a4c6793d66fca39) ) ROM_LOAD16_BYTE( "stlforce.u29", 0x100001, 0x080000, CRC(30488f44) SHA1(af0d92d8952ce3cd893ab9569afdda12e17795e7) ) ROM_LOAD16_BYTE( "stlforce.u30", 0x100000, 0x080000, CRC(cf19d43a) SHA1(dc04930548ac5b7e2b74c6041325eac06e773ed5) ) ROM_REGION( 0x100000, "gfx2", ROMREGION_DISPOSE ) /* 16x16 sprites */ ROM_LOAD( "stlforce.u36", 0x00000, 0x40000, CRC(037dfa9f) SHA1(224f5cd1a95d55b065aef5c0bd03b50cabcb619b) ) ROM_LOAD( "stlforce.u31", 0x40000, 0x40000, CRC(305a8eb5) SHA1(3a8d26f8bc4ec2e8246d1c59115e21cad876630d) ) ROM_LOAD( "stlforce.u32", 0x80000, 0x40000, CRC(760e8601) SHA1(a61f1d8566e09ce811382c6e23f3881e6c438f15) ) ROM_LOAD( "stlforce.u33", 0xc0000, 0x40000, CRC(19415cf3) SHA1(31490a1f3321558f82667b63f3963b2ec3fa0c59) ) /* only one bank */ ROM_REGION( 0x80000, "oki", 0 ) /* samples */ ROM_LOAD( "stlforce.u1", 0x00000, 0x80000, CRC(0a55edf1) SHA1(091f12e8110c62df22b370a2e710c930ba06e8ca) ) ROM_END /* Twin Brats Elettronica Video-Games S.R.L, 1995 PCB Layout ---------- |----------------------------------------------| | 1.BIN | | M6295 PAL 6116 6116 | | 6116 6116 | | 62256 PAL | | 62256 | | 6116 | |J 6116 |---------| 6116 | |A 6116 |ACTEL | | |M |A1020A | | |M |PL84C | | |A PAL | | 30MHz 11.BIN| | |---------|6264 PAL 10.BIN| | 62256 62256 6264 |---------| 9.BIN | | 2.BIN 3.BIN |ACTEL | 8.BIN | | |-----------------| |A1020A | 7.BIN | | | MC68000P12 | |PL84C | 6.BIN | | * | | PAL | | 5.BIN | | |-----------------| PAL |---------| 4.BIN | | 93C46 14.7456MHz | |----------------------------------------------| Notes: 68000 clock : 14.7456MHz M6295 clock : 0.9375MHz (30/32). Sample Rate = 937500 / 132 VSync : 58Hz * : Push button test switch */ ROM_START( twinbrat ) ROM_REGION( 0x40000, "cpu", 0 ) /* 68000 Code */ ROM_LOAD16_BYTE( "2.u105", 0x00000, 0x20000, CRC(33a9bb82) SHA1(0f54239397c93e264b9b211f67bf626acf1246a9) ) ROM_LOAD16_BYTE( "3.u104", 0x00001, 0x20000, CRC(b1186a67) SHA1(502074063101885874db76ae707db1082313efcf) ) ROM_REGION( 0x200000, "gfx1", ROMREGION_DISPOSE ) ROM_LOAD16_BYTE( "6.bin", 0x000000, 0x80000, CRC(af10ddfd) SHA1(e5e83044f20d6cbbc1b4ef1812ac57b6dc958a8a) ) ROM_LOAD16_BYTE( "7.bin", 0x000001, 0x80000, CRC(3696345a) SHA1(ea38be3586757527b2a1aad2e22b83937f8602da) ) ROM_LOAD16_BYTE( "4.bin", 0x100000, 0x80000, CRC(1ae8a751) SHA1(5f30306580c6ab4af0ddbdc4519eb4e0ab9bd23a) ) ROM_LOAD16_BYTE( "5.bin", 0x100001, 0x80000, CRC(cf235eeb) SHA1(d067e2dd4f28a8986dd76ec0eba90e1adbf5787c) ) ROM_REGION( 0x100000, "gfx2", ROMREGION_DISPOSE ) ROM_LOAD( "11.bin", 0x000000, 0x40000, CRC(00eecb03) SHA1(5913da4d2ad97c1ce5e8e601a22b499cd93af744) ) ROM_LOAD( "10.bin", 0x040000, 0x40000, CRC(7556bee9) SHA1(3fe99c7e9378791b79c43b04f5d0a36404448beb) ) ROM_LOAD( "9.bin", 0x080000, 0x40000, CRC(13194d89) SHA1(95c35b6012f98a64630abb40fd55b24ff8a5e031) ) ROM_LOAD( "8.bin", 0x0c0000, 0x40000, CRC(79f14528) SHA1(9c07d9a9e59f69a525bbaec05d74eb8d21bb9563) ) ROM_REGION( 0x080000, "user1", 0 ) /* Samples */ ROM_LOAD( "1.bin", 0x00000, 0x80000, CRC(76296578) SHA1(04eca78abe60b283269464c0d12815579126ac08) ) /* $00000-$20000 stays the same in all sound banks, */ /* the second half of the bank is what gets switched */ ROM_REGION( 0x100000, "oki", 0 ) /* Samples */ ROM_COPY( "user1", 0x000000, 0x000000, 0x020000) ROM_COPY( "user1", 0x000000, 0x020000, 0x020000) ROM_COPY( "user1", 0x000000, 0x040000, 0x020000) ROM_COPY( "user1", 0x020000, 0x060000, 0x020000) ROM_COPY( "user1", 0x000000, 0x080000, 0x020000) ROM_COPY( "user1", 0x040000, 0x0a0000, 0x020000) ROM_COPY( "user1", 0x000000, 0x0c0000, 0x020000) ROM_COPY( "user1", 0x060000, 0x0e0000, 0x020000) ROM_END ROM_START( twinbrta ) ROM_REGION( 0x40000, "cpu", 0 ) /* 68000 Code */ ROM_LOAD16_BYTE( "2.bin", 0x00000, 0x20000, CRC(5e75f568) SHA1(f42d2a73d737e6b01dd049eea2a10fc8c8096d8f) ) ROM_LOAD16_BYTE( "3.bin", 0x00001, 0x20000, CRC(0e3fa9b0) SHA1(0148cc616eac84dc16415e1557ec6040d14392d4) ) ROM_REGION( 0x200000, "gfx1", ROMREGION_DISPOSE ) ROM_LOAD16_BYTE( "6.bin", 0x000000, 0x80000, CRC(af10ddfd) SHA1(e5e83044f20d6cbbc1b4ef1812ac57b6dc958a8a) ) ROM_LOAD16_BYTE( "7.bin", 0x000001, 0x80000, CRC(3696345a) SHA1(ea38be3586757527b2a1aad2e22b83937f8602da) ) ROM_LOAD16_BYTE( "4.bin", 0x100000, 0x80000, CRC(1ae8a751) SHA1(5f30306580c6ab4af0ddbdc4519eb4e0ab9bd23a) ) ROM_LOAD16_BYTE( "5.bin", 0x100001, 0x80000, CRC(cf235eeb) SHA1(d067e2dd4f28a8986dd76ec0eba90e1adbf5787c) ) ROM_REGION( 0x100000, "gfx2", ROMREGION_DISPOSE ) ROM_LOAD( "11.bin", 0x000000, 0x40000, CRC(00eecb03) SHA1(5913da4d2ad97c1ce5e8e601a22b499cd93af744) ) ROM_LOAD( "10.bin", 0x040000, 0x40000, CRC(7556bee9) SHA1(3fe99c7e9378791b79c43b04f5d0a36404448beb) ) ROM_LOAD( "9.bin", 0x080000, 0x40000, CRC(13194d89) SHA1(95c35b6012f98a64630abb40fd55b24ff8a5e031) ) ROM_LOAD( "8.bin", 0x0c0000, 0x40000, CRC(79f14528) SHA1(9c07d9a9e59f69a525bbaec05d74eb8d21bb9563) ) ROM_REGION( 0x080000, "user1", 0 ) /* Samples */ ROM_LOAD( "1.bin", 0x00000, 0x80000, CRC(76296578) SHA1(04eca78abe60b283269464c0d12815579126ac08) ) /* $00000-$20000 stays the same in all sound banks, */ /* the second half of the bank is what gets switched */ ROM_REGION( 0x100000, "oki", 0 ) /* Samples */ ROM_COPY( "user1", 0x000000, 0x000000, 0x020000) ROM_COPY( "user1", 0x000000, 0x020000, 0x020000) ROM_COPY( "user1", 0x000000, 0x040000, 0x020000) ROM_COPY( "user1", 0x020000, 0x060000, 0x020000) ROM_COPY( "user1", 0x000000, 0x080000, 0x020000) ROM_COPY( "user1", 0x040000, 0x0a0000, 0x020000) ROM_COPY( "user1", 0x000000, 0x0c0000, 0x020000) ROM_COPY( "user1", 0x060000, 0x0e0000, 0x020000) ROM_END static DRIVER_INIT(stlforce) { stlforce_sprxoffs = 0; default_eeprom = stlforce_default_eeprom; } static DRIVER_INIT(twinbrat) { stlforce_sprxoffs = 9; default_eeprom = twinbrat_default_eeprom; } GAME( 1994, stlforce, 0, stlforce, stlforce, stlforce, ROT0, "Electronic Devices Italy / Ecogames S.L. Spain", "Steel Force", 0 ) GAME( 1995, twinbrat, 0, twinbrat, stlforce, twinbrat, ROT0, "Elettronica Video-Games S.R.L.", "Twin Brats (set 1)", 0 ) GAME( 1995, twinbrta, twinbrat, twinbrat, stlforce, twinbrat, ROT0, "Elettronica Video-Games S.R.L.", "Twin Brats (set 2)", 0 )