/* Data East Backfire! Backfire! inputs are incomplete (p2 side.., alt control modes etc.) there may still be some problems with the 156 co-processor, but it seems to be mostly correct set 2 defaults to wheel controls, so until they're mapped you must change back to joystick in test mode */ #define DE156CPU ARM #include "driver.h" #include "decocrpt.h" #include "deco32.h" #include "machine/eeprom.h" #include "sound/okim6295.h" #include "sound/ymz280b.h" #include "cpu/arm/arm.h" #include "deco16ic.h" #include "rendlay.h" static UINT32 *backfire_spriteram32_1; static UINT32 *backfire_spriteram32_2; static UINT32 *backfire_mainram; static bitmap_t *backfire_left; static bitmap_t *backfire_right; //UINT32 *backfire_180010, *backfire_188010; static UINT32 *backfire_left_priority, *backfire_right_priority; /* I'm using the functions in deco16ic.c ... same chips, why duplicate code? */ static int backfire_bank_callback(int bank) { // mame_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; } static VIDEO_START(backfire) { /* allocate the ram as 16-bit (we do it here because the CPU is 32-bit) */ deco16_pf1_data = auto_malloc(0x2000); deco16_pf2_data = auto_malloc(0x2000); deco16_pf3_data = auto_malloc(0x2000); deco16_pf4_data = auto_malloc(0x2000); deco16_pf1_rowscroll = auto_malloc(0x0800); deco16_pf2_rowscroll = auto_malloc(0x0800); deco16_pf3_rowscroll = auto_malloc(0x0800); deco16_pf4_rowscroll = auto_malloc(0x0800); deco16_pf12_control = auto_malloc(0x10); deco16_pf34_control = auto_malloc(0x10); /* and register the allocated ram so that save states still work */ state_save_register_global_pointer(machine, deco16_pf1_data, 0x2000/2); state_save_register_global_pointer(machine, deco16_pf2_data, 0x2000/2); state_save_register_global_pointer(machine, deco16_pf3_data, 0x2000/2); state_save_register_global_pointer(machine, deco16_pf4_data, 0x2000/2); state_save_register_global_pointer(machine, deco16_pf1_rowscroll, 0x800/2); state_save_register_global_pointer(machine, deco16_pf2_rowscroll, 0x800/2); state_save_register_global_pointer(machine, deco16_pf3_rowscroll, 0x800/2); state_save_register_global_pointer(machine, deco16_pf4_rowscroll, 0x800/2); state_save_register_global_pointer(machine, deco16_pf12_control, 0x10/2); state_save_register_global_pointer(machine, deco16_pf34_control, 0x10/2); deco16_2_video_init(machine, 0); deco16_pf1_colour_bank = 0x00; deco16_pf2_colour_bank = 0x40; deco16_pf3_colour_bank = 0x10; deco16_pf4_colour_bank = 0x50; deco16_set_tilemap_bank_callback(0, backfire_bank_callback); deco16_set_tilemap_bank_callback(1, backfire_bank_callback); deco16_set_tilemap_bank_callback(2, backfire_bank_callback); deco16_set_tilemap_bank_callback(3, backfire_bank_callback); backfire_left = auto_bitmap_alloc(80*8, 32*8, BITMAP_FORMAT_INDEXED16); backfire_right = auto_bitmap_alloc(80*8, 32*8, BITMAP_FORMAT_INDEXED16); } static void draw_sprites(running_machine *machine,bitmap_t *bitmap,const rectangle *cliprect, UINT32 *backfire_spriteram32, int region) { int offs; flip_screen_set_no_update(machine, 1); for (offs = (0x1400/4)-4;offs >= 0;offs -= 4) // 0x1400 for charlien { int x,y,sprite,colour,multi,fx,fy,inc,flash,mult, pri; sprite = backfire_spriteram32[offs+1]&0xffff; y = backfire_spriteram32[offs]&0xffff; flash=y&0x1000; if (flash && (video_screen_get_frame_number(machine->primary_screen) & 1)) continue; x = backfire_spriteram32[offs+2]&0xffff; colour = (x >>9) & 0x1f; pri = (x&0xc000); // 2 bits or 1? switch (pri&0xc000) { case 0x0000: pri=0; break; // numbers, people, cars when in the air, status display.. case 0x4000: pri=0xf0;break; // cars most of the time case 0x8000: pri=0; break; // car wheels during jump? case 0xc000: pri=0xf0;break; /* car wheels in race? */ } // pri 0 = ontop of everything// // pri = 0; fx = y & 0x2000; fy = y & 0x4000; multi = (1 << ((y & 0x0600) >> 9)) - 1; /* 1x, 2x, 4x, 8x height */ x = x & 0x01ff; y = y & 0x01ff; if (x >= 320) x -= 512; if (y >= 256) y -= 512; y = 240 - y; x = 304 - x; if (x>320) continue; sprite &= ~multi; if (fy) inc = -1; else { sprite += multi; inc = 1; } if (flip_screen_x_get(machine)) { y=240-y; x=304-x; if (fx) fx=0; else fx=1; if (fy) fy=0; else fy=1; mult=16; } else mult=-16; while (multi >= 0) { pdrawgfx(bitmap,machine->gfx[region], sprite - multi * inc, colour, fx,fy, x,y + mult * multi, cliprect,TRANSPARENCY_PEN,0,pri); multi--; } } } static VIDEO_UPDATE(backfire) { const device_config *left_screen = devtag_get_device(screen->machine, "lscreen"); const device_config *right_screen = devtag_get_device(screen->machine, "rscreen"); /* screen 1 uses pf1 as the forground and pf3 as the background */ /* screen 2 uses pf2 as the foreground and pf4 as the background */ deco16_pf12_update(deco16_pf1_rowscroll,deco16_pf2_rowscroll); deco16_pf34_update(deco16_pf3_rowscroll,deco16_pf4_rowscroll); if (screen == left_screen) { bitmap_fill(priority_bitmap,NULL,0); bitmap_fill(bitmap,cliprect,0x100); if (backfire_left_priority[0] == 0) { deco16_tilemap_3_draw(screen,bitmap,cliprect,0,1); deco16_tilemap_1_draw(screen,bitmap,cliprect,0,2); draw_sprites(screen->machine,bitmap,cliprect,backfire_spriteram32_1,3); } else if (backfire_left_priority[0] == 2) { deco16_tilemap_1_draw(screen,bitmap,cliprect,0,2); deco16_tilemap_3_draw(screen,bitmap,cliprect,0,4); draw_sprites(screen->machine,bitmap,cliprect,backfire_spriteram32_1,3); } else popmessage( "unknown left priority %08x", backfire_left_priority[0] ); } else if (screen == right_screen) { bitmap_fill(priority_bitmap,NULL,0); bitmap_fill(bitmap,cliprect,0x500); if (backfire_right_priority[0] == 0) { deco16_tilemap_4_draw(screen,bitmap,cliprect,0,1); deco16_tilemap_2_draw(screen,bitmap,cliprect,0,2); draw_sprites(screen->machine,bitmap,cliprect,backfire_spriteram32_2,4); } else if (backfire_right_priority[0] == 2) { deco16_tilemap_2_draw(screen,bitmap,cliprect,0,2); deco16_tilemap_4_draw(screen,bitmap,cliprect,0,4); draw_sprites(screen->machine,bitmap,cliprect,backfire_spriteram32_2,4); } else popmessage( "unknown right priority %08x", backfire_right_priority[0] ); } return 0; } static READ32_HANDLER(backfire_eeprom_r) { /* some kind of screen indicator? checked by backfira set before it will boot */ int backfire_screen = mame_rand(space->machine)&1; return ((eeprom_read_bit()<<24) | input_port_read(space->machine, "IN0") | ((input_port_read(space->machine, "IN2") & ~0x40) <<16) | ((input_port_read(space->machine, "IN3") & 0x40) <<16)) ^ (backfire_screen << 26) ; } static READ32_HANDLER(backfire_control2_r) { // logerror("%08x:Read eprom %08x (%08x)\n",cpu_get_pc(space->cpu),offset<<1,mem_mask); return (eeprom_read_bit()<<24) | input_port_read(space->machine, "IN1") | (input_port_read(space->machine, "IN1")<<16); } #ifdef UNUSED_FUNCTION static READ32_HANDLER(backfire_control3_r) { // logerror("%08x:Read eprom %08x (%08x)\n",cpu_get_pc(space->cpu),offset<<1,mem_mask); return (eeprom_read_bit()<<24) | input_port_read(space->machine, "IN2") | (input_port_read(space->machine, "IN2")<<16); } #endif static WRITE32_HANDLER(backfire_eeprom_w) { logerror("%08x:write eprom %08x (%08x) %08x\n",cpu_get_pc(space->cpu),offset<<1,mem_mask,data); if (ACCESSING_BITS_0_7) { eeprom_set_clock_line((data & 0x2) ? ASSERT_LINE : CLEAR_LINE); eeprom_write_bit(data & 0x1); eeprom_set_cs_line((data & 0x4) ? CLEAR_LINE : ASSERT_LINE); } } static WRITE32_HANDLER(wcvol95_nonbuffered_palette_w) { COMBINE_DATA(&paletteram32[offset]); palette_set_color_rgb(space->machine,offset,pal5bit(paletteram32[offset] >> 0),pal5bit(paletteram32[offset] >> 5),pal5bit(paletteram32[offset] >> 10)); } /* map 32-bit writes to 16-bit */ static READ32_HANDLER( backfire_pf1_rowscroll_r ) { return deco16_pf1_rowscroll[offset]^0xffff0000; } static READ32_HANDLER( backfire_pf2_rowscroll_r ) { return deco16_pf2_rowscroll[offset]^0xffff0000; } static READ32_HANDLER( backfire_pf3_rowscroll_r ) { return deco16_pf3_rowscroll[offset]^0xffff0000; } static READ32_HANDLER( backfire_pf4_rowscroll_r ) { return deco16_pf4_rowscroll[offset]^0xffff0000; } static WRITE32_HANDLER( backfire_pf1_rowscroll_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; COMBINE_DATA(&deco16_pf1_rowscroll[offset]); } static WRITE32_HANDLER( backfire_pf2_rowscroll_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; COMBINE_DATA(&deco16_pf2_rowscroll[offset]); } static WRITE32_HANDLER( backfire_pf3_rowscroll_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; COMBINE_DATA(&deco16_pf3_rowscroll[offset]); } static WRITE32_HANDLER( backfire_pf4_rowscroll_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; COMBINE_DATA(&deco16_pf4_rowscroll[offset]); } static READ32_HANDLER ( backfire_pf12_control_r ) { return deco16_pf12_control[offset]^0xffff0000; } static READ32_HANDLER ( backfire_pf34_control_r ) { return deco16_pf34_control[offset]^0xffff0000; } static WRITE32_HANDLER( backfire_pf12_control_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; COMBINE_DATA(&deco16_pf12_control[offset]); } static WRITE32_HANDLER( backfire_pf34_control_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; COMBINE_DATA(&deco16_pf34_control[offset]); } static READ32_HANDLER( backfire_pf1_data_r ) { return deco16_pf1_data[offset]^0xffff0000; } static READ32_HANDLER( backfire_pf2_data_r ) { return deco16_pf2_data[offset]^0xffff0000; } static READ32_HANDLER( backfire_pf3_data_r ) { return deco16_pf3_data[offset]^0xffff0000; } static READ32_HANDLER( backfire_pf4_data_r ) { return deco16_pf4_data[offset]^0xffff0000; } static WRITE32_HANDLER( backfire_pf1_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf1_data_w(space,offset,data,mem_mask); } static WRITE32_HANDLER( backfire_pf2_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf2_data_w(space,offset,data,mem_mask); } static WRITE32_HANDLER( backfire_pf3_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf3_data_w(space,offset,data,mem_mask); } static WRITE32_HANDLER( backfire_pf4_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf4_data_w(space,offset,data,mem_mask); } #ifdef UNUSED_FUNCTION READ32_HANDLER( backfire_unknown_wheel_r ) { return input_port_read(space->machine, "PADDLE0"); } READ32_HANDLER( backfire_wheel1_r ) { return mame_rand(space->machine); } READ32_HANDLER( backfire_wheel2_r ) { return mame_rand(space->machine); } #endif static ADDRESS_MAP_START( backfire_map, ADDRESS_SPACE_PROGRAM, 32 ) AM_RANGE(0x000000, 0x0fffff) AM_ROM AM_RANGE(0x100000, 0x10001f) AM_READWRITE( backfire_pf12_control_r, backfire_pf12_control_w) AM_RANGE(0x110000, 0x111fff) AM_READWRITE( backfire_pf1_data_r, backfire_pf1_data_w) AM_RANGE(0x114000, 0x115fff) AM_READWRITE( backfire_pf2_data_r, backfire_pf2_data_w) AM_RANGE(0x120000, 0x120fff) AM_READWRITE( backfire_pf1_rowscroll_r, backfire_pf1_rowscroll_w) AM_RANGE(0x124000, 0x124fff) AM_READWRITE( backfire_pf2_rowscroll_r, backfire_pf2_rowscroll_w) AM_RANGE(0x130000, 0x13001f) AM_READWRITE( backfire_pf34_control_r, backfire_pf34_control_w) AM_RANGE(0x140000, 0x141fff) AM_READWRITE( backfire_pf3_data_r, backfire_pf3_data_w) AM_RANGE(0x144000, 0x145fff) AM_READWRITE( backfire_pf4_data_r, backfire_pf4_data_w) AM_RANGE(0x150000, 0x150fff) AM_READWRITE( backfire_pf3_rowscroll_r, backfire_pf3_rowscroll_w) AM_RANGE(0x154000, 0x154fff) AM_READWRITE( backfire_pf4_rowscroll_r, backfire_pf4_rowscroll_w) AM_RANGE(0x160000, 0x161fff) AM_WRITE(wcvol95_nonbuffered_palette_w) AM_BASE(&paletteram32) AM_RANGE(0x170000, 0x177fff) AM_RAM AM_BASE( &backfire_mainram )// main ram // AM_RANGE(0x180010, 0x180013) AM_RAM AM_BASE(&backfire_180010) // always 180010 ? // AM_RANGE(0x188010, 0x188013) AM_RAM AM_BASE(&backfire_188010) // always 188010 ? AM_RANGE(0x184000, 0x185fff) AM_RAM AM_BASE( &backfire_spriteram32_1 ) AM_RANGE(0x18c000, 0x18dfff) AM_RAM AM_BASE( &backfire_spriteram32_2 ) AM_RANGE(0x190000, 0x190003) AM_READ(backfire_eeprom_r) AM_RANGE(0x194000, 0x194003) AM_READ(backfire_control2_r) AM_RANGE(0x1a4000, 0x1a4003) AM_WRITE(backfire_eeprom_w) AM_RANGE(0x1a8000, 0x1a8003) AM_RAM AM_BASE(&backfire_left_priority) AM_RANGE(0x1ac000, 0x1ac003) AM_RAM AM_BASE(&backfire_right_priority) // AM_RANGE(0x1b0000, 0x1b0003) AM_WRITE(SMH_NOP) // always 1b0000 /* when set to pentometer in test mode */ // AM_RANGE(0x1e4000, 0x1e4003) AM_READ(backfire_unknown_wheel_r) // AM_RANGE(0x1e8000, 0x1e8003) AM_READ(backfire_wheel1_r) // AM_RANGE(0x1e8004, 0x1e8007) AM_READ(backfire_wheel2_r) AM_RANGE(0x1c0000, 0x1c0007) AM_DEVREADWRITE8("ymz", ymz280b_r, ymz280b_w, 0x000000ff) ADDRESS_MAP_END static INPUT_PORTS_START( backfire ) PORT_START("IN0") 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_START("IN1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 ) PORT_START("IN2") PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_SERVICE_NO_TOGGLE( 0x0008, IP_ACTIVE_LOW ) PORT_BIT( 0x0010, IP_ACTIVE_HIGH, IPT_VBLANK ) PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNUSED ) /* 'soundmask' */ PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x0100, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(1) PORT_BIT( 0x0200, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_PLAYER(1) PORT_BIT( 0x0400, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_PLAYER(1) PORT_BIT( 0x0800, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x1000, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_PLAYER(2) PORT_BIT( 0x2000, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_PLAYER(2) PORT_BIT( 0x4000, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_PLAYER(2) PORT_BIT( 0x8000, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("IN3") PORT_BIT( 0x003f, IP_ACTIVE_LOW, IPT_UNUSED ) /* all other bits like low IN2 */ PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_VBLANK ) PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("PADDLE0") PORT_BIT ( 0x00ff, 0x0080, IPT_PADDLE ) PORT_SENSITIVITY(30) PORT_KEYDELTA(1) PORT_START("PADDLE1") PORT_BIT ( 0x00ff, 0x0080, IPT_PADDLE ) PORT_SENSITIVITY(30) PORT_KEYDELTA(1) PORT_START("UNK") /* ?? */ 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( backfire ) GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 128 ) /* Characters 8x8 */ GFXDECODE_ENTRY( "gfx1", 0, tilelayout, 0, 128 ) /* Tiles 16x16 */ 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 static void sound_irq_gen(const device_config *device, int state) { logerror("sound irq\n"); } static const ymz280b_interface ymz280b_intf = { sound_irq_gen }; static INTERRUPT_GEN( deco32_vbl_interrupt ) { cpu_set_input_line(device, ARM_IRQ_LINE, HOLD_LINE); } static MACHINE_DRIVER_START( backfire ) /* basic machine hardware */ MDRV_CPU_ADD("maincpu", ARM, 28000000/4) /* Unconfirmed */ MDRV_CPU_PROGRAM_MAP(backfire_map,0) MDRV_CPU_VBLANK_INT("lscreen", deco32_vbl_interrupt) /* or is it "rscreen?" */ MDRV_NVRAM_HANDLER(93C46) /* video hardware */ MDRV_PALETTE_LENGTH(2048) MDRV_GFXDECODE(backfire) MDRV_DEFAULT_LAYOUT(layout_dualhsxs) MDRV_SCREEN_ADD("lscreen", RASTER) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MDRV_SCREEN_SIZE(40*8, 32*8) MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1) MDRV_SCREEN_ADD("rscreen", RASTER) MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) MDRV_SCREEN_REFRESH_RATE(60) MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */) MDRV_SCREEN_SIZE(40*8, 32*8) MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1) MDRV_VIDEO_START(backfire) MDRV_VIDEO_UPDATE(backfire) /* sound hardware */ MDRV_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker") MDRV_SOUND_ADD("ymz", YMZ280B, 28000000 / 2) MDRV_SOUND_CONFIG(ymz280b_intf) MDRV_SOUND_ROUTE(0, "lspeaker", 1.0) MDRV_SOUND_ROUTE(1, "rspeaker", 1.0) MACHINE_DRIVER_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", ROMREGION_DISPOSE ) /* 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", ROMREGION_DISPOSE ) /* Tiles 2 */ ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) ) ROM_REGION( 0x400000, "gfx3", ROMREGION_DISPOSE ) /* 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", ROMREGION_DISPOSE ) /* 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", ROMREGION_DISPOSE ) 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( backfira ) 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", ROMREGION_DISPOSE ) /* 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", ROMREGION_DISPOSE ) /* Tiles 2 */ ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) ) ROM_REGION( 0x400000, "gfx3", ROMREGION_DISPOSE ) /* 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", ROMREGION_DISPOSE ) /* 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 static void descramble_sound( running_machine *machine ) { UINT8 *rom = memory_region(machine, "ymz"); int length = 0x200000; // only the first rom is swapped on backfire! UINT8 *buf1 = malloc_or_die(length); UINT32 x; for (x=0;xcpu)); if (cpu_get_pc(space->cpu)==0xce44) cpu_spinuntil_time(space->cpu, ATTOTIME_IN_USEC(400)); // backfire if (cpu_get_pc(space->cpu)==0xcee4) cpu_spinuntil_time(space->cpu, ATTOTIME_IN_USEC(400)); // backfira return backfire_mainram[0x18/4]; } static DRIVER_INIT( backfire ) { deco56_decrypt_gfx(machine, "gfx1"); /* 141 */ deco56_decrypt_gfx(machine, "gfx2"); /* 141 */ deco156_decrypt(machine); cpu_set_clockscale(machine->cpu[0], 4.0f); /* core timings aren't accurate */ descramble_sound(machine); memory_install_read32_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0x0170018, 0x017001b, 0, 0, backfire_speedup_r ); } GAME( 1995, backfire, 0, backfire, backfire, backfire, ROT0, "Data East Corporation", "Backfire! (set 1)", 0 ) GAME( 1995, backfira, backfire, backfire, backfire, backfire, ROT0, "Data East Corporation", "Backfire! (set 2)", 0 ) // defaults to wheel controls, must change to joystick to play