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-rw-r--r--src/mame/drivers/backfire.c701
1 files changed, 701 insertions, 0 deletions
diff --git a/src/mame/drivers/backfire.c b/src/mame/drivers/backfire.c
new file mode 100644
index 00000000000..b5113ef7aef
--- /dev/null
+++ b/src/mame/drivers/backfire.c
@@ -0,0 +1,701 @@
+/* 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
+extern void decrypt156(void);
+
+#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 mame_bitmap * backfire_left;
+static mame_bitmap * 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(deco16_pf1_data, 0x2000/2);
+ state_save_register_global_pointer(deco16_pf2_data, 0x2000/2);
+ state_save_register_global_pointer(deco16_pf3_data, 0x2000/2);
+ state_save_register_global_pointer(deco16_pf4_data, 0x2000/2);
+ state_save_register_global_pointer(deco16_pf1_rowscroll, 0x800/2);
+ state_save_register_global_pointer(deco16_pf2_rowscroll, 0x800/2);
+ state_save_register_global_pointer(deco16_pf3_rowscroll, 0x800/2);
+ state_save_register_global_pointer(deco16_pf4_rowscroll, 0x800/2);
+ state_save_register_global_pointer(deco16_pf12_control, 0x10/2);
+ state_save_register_global_pointer(deco16_pf34_control, 0x10/2);
+
+ deco16_2_video_init(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,mame_bitmap *bitmap,const rectangle *cliprect, UINT32 *backfire_spriteram32, int region)
+{
+ int offs;
+
+ flip_screen = 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 && (cpu_getcurrentframe() & 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)
+ {
+ 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)
+{
+ /* 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==0)
+ {
+
+ fillbitmap(priority_bitmap,0,NULL);
+ fillbitmap(bitmap,machine->pens[0x100],cliprect);
+
+ if (backfire_left_priority[0] == 0)
+ {
+ deco16_tilemap_3_draw(bitmap,cliprect,0,1);
+ deco16_tilemap_1_draw(bitmap,cliprect,0,2);
+ draw_sprites(machine,bitmap,cliprect,backfire_spriteram32_1,3);
+ }
+ else if (backfire_left_priority[0] == 2)
+ {
+ deco16_tilemap_1_draw(bitmap,cliprect,0,2);
+ deco16_tilemap_3_draw(bitmap,cliprect,0,4);
+ draw_sprites(machine,bitmap,cliprect,backfire_spriteram32_1,3);
+ }
+ else
+ {
+ popmessage( "unknown left priority %08x", backfire_left_priority[0] );
+ }
+ }
+ else if (screen==1)
+ {
+ fillbitmap(priority_bitmap,0,NULL);
+ fillbitmap(bitmap,machine->pens[0x500],cliprect);
+
+ if (backfire_right_priority[0] == 0)
+ {
+ deco16_tilemap_4_draw(bitmap,cliprect,0,1);
+ deco16_tilemap_2_draw(bitmap,cliprect,0,2);
+ draw_sprites(machine,bitmap,cliprect,backfire_spriteram32_2,4);
+ }
+ else if (backfire_right_priority[0] == 2)
+ {
+ deco16_tilemap_2_draw(bitmap,cliprect,0,2);
+ deco16_tilemap_4_draw(bitmap,cliprect,0,4);
+ draw_sprites(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(Machine)&1;
+ return ((EEPROM_read_bit()<<24) | readinputport(0) | (readinputport(3)<<16)) ^ (backfire_screen << 26) ;
+}
+
+static READ32_HANDLER(backfire_control2_r)
+{
+// logerror("%08x:Read eprom %08x (%08x)\n",activecpu_get_pc(),offset<<1,mem_mask);
+ return (EEPROM_read_bit()<<24) | readinputport(1) | (readinputport(1)<<16);
+}
+
+#ifdef UNUSED_FUNCTION
+static READ32_HANDLER(backfire_control3_r)
+{
+// logerror("%08x:Read eprom %08x (%08x)\n",activecpu_get_pc(),offset<<1,mem_mask);
+ return (EEPROM_read_bit()<<24) | readinputport(2) | (readinputport(2)<<16);
+}
+#endif
+
+
+static WRITE32_HANDLER(backfire_eeprom_w)
+{
+ logerror("%08x:write eprom %08x (%08x) %08x\n",activecpu_get_pc(),offset<<1,mem_mask,data);
+ if (ACCESSING_LSB32) {
+ 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(Machine,offset,pal5bit(paletteram32[offset] >> 0),pal5bit(paletteram32[offset] >> 5),pal5bit(paletteram32[offset] >> 10));
+}
+
+
+static READ32_HANDLER( deco156_snd_r )
+{
+ return YMZ280B_status_0_r(0);
+}
+
+static WRITE32_HANDLER( deco156_snd_w )
+{
+ if (offset)
+ YMZ280B_data_0_w(0, data);
+ else
+ YMZ280B_register_0_w(0, data);
+}
+
+/* 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(offset,data,mem_mask); }
+static WRITE32_HANDLER( backfire_pf2_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf2_data_w(offset,data,mem_mask); }
+static WRITE32_HANDLER( backfire_pf3_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf3_data_w(offset,data,mem_mask); }
+static WRITE32_HANDLER( backfire_pf4_data_w ) { data &=0x0000ffff; mem_mask &=0x0000ffff; deco16_pf4_data_w(offset,data,mem_mask); }
+
+#ifdef UNUSED_FUNCTION
+READ32_HANDLER( backfire_unknown_wheel_r )
+{
+ return readinputport(4);
+}
+
+READ32_HANDLER( backfire_wheel1_r )
+{
+ return mame_rand(Machine);
+}
+
+READ32_HANDLER( backfire_wheel2_r )
+{
+ return mame_rand(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(MWA32_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_READ(deco156_snd_r) AM_WRITE(deco156_snd_w)
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( backfire )
+ PORT_START
+ 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
+ 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
+ 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_BIT( 0x0008, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME( DEF_STR( Service_Mode )) PORT_CODE(KEYCODE_F2)
+ 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
+ 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_BIT( 0x0008, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME( DEF_STR( Service_Mode )) PORT_CODE(KEYCODE_F2)
+ PORT_BIT( 0x0010, IP_ACTIVE_HIGH, IPT_VBLANK )
+ PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_UNUSED ) /* 'soundmask' */
+ PORT_BIT( 0x0040, IP_ACTIVE_HIGH, IPT_VBLANK )
+ PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START
+ PORT_BIT ( 0x00ff, 0x0080, IPT_PADDLE ) PORT_SENSITIVITY(30) PORT_KEYDELTA(1)
+
+ PORT_START
+ PORT_BIT ( 0x00ff, 0x0080, IPT_PADDLE ) PORT_SENSITIVITY(30) PORT_KEYDELTA(1)
+
+ PORT_START
+ /* ?? */
+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( REGION_GFX1, 0, charlayout, 0, 128 ) /* Characters 8x8 */
+ GFXDECODE_ENTRY( REGION_GFX1, 0, tilelayout, 0, 128 ) /* Tiles 16x16 */
+ GFXDECODE_ENTRY( REGION_GFX2, 0, tilelayout, 0, 128 ) /* Tiles 16x16 */
+ GFXDECODE_ENTRY( REGION_GFX3, 0, spritelayout, 0x200, 32 ) /* Sprites 16x16 (screen 1) */
+ GFXDECODE_ENTRY( REGION_GFX4, 0, spritelayout, 0x600, 32 ) /* Sprites 16x16 (screen 2) */
+GFXDECODE_END
+
+
+static void sound_irq_gen(int state)
+{
+ logerror("sound irq\n");
+}
+
+static struct YMZ280Binterface ymz280b_intf =
+{
+ REGION_SOUND1,
+ sound_irq_gen
+};
+
+static INTERRUPT_GEN( deco32_vbl_interrupt )
+{
+ cpunum_set_input_line(0, ARM_IRQ_LINE, HOLD_LINE);
+}
+
+
+
+static MACHINE_DRIVER_START( backfire )
+
+ /* basic machine hardware */
+ MDRV_CPU_ADD(ARM, 28000000/4) /* Unconfirmed */
+ MDRV_CPU_PROGRAM_MAP(backfire_map,0)
+ MDRV_CPU_VBLANK_INT(deco32_vbl_interrupt,1)
+
+ MDRV_SCREEN_REFRESH_RATE(58)
+ MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(529))
+ MDRV_NVRAM_HANDLER(93C46)
+
+ /* video hardware */
+ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
+ MDRV_PALETTE_LENGTH(2048)
+ MDRV_GFXDECODE(backfire)
+ MDRV_DEFAULT_LAYOUT(layout_dualhsxs)
+
+ MDRV_SCREEN_ADD("left", 0x000)
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
+ MDRV_SCREEN_SIZE(40*8, 32*8)
+ MDRV_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1)
+
+ MDRV_SCREEN_ADD("right", 0x000)
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
+ 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("left", "right")
+
+ MDRV_SOUND_ADD(YMZ280B, 28000000 / 2)
+ MDRV_SOUND_CONFIG(ymz280b_intf)
+ MDRV_SOUND_ROUTE(0, "left", 1.0)
+ MDRV_SOUND_ROUTE(1, "right", 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, REGION_CPU1, 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, REGION_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, REGION_GFX2, ROMREGION_DISPOSE ) /* Tiles 2 */
+ ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) )
+
+ ROM_REGION( 0x400000, REGION_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, REGION_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, REGION_SOUND1, 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, REGION_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, REGION_CPU1, 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, REGION_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, REGION_GFX2, ROMREGION_DISPOSE ) /* Tiles 2 */
+ ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) )
+
+ ROM_REGION( 0x400000, REGION_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, REGION_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, REGION_SOUND1, 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( void )
+{
+ UINT8 *rom = memory_region(REGION_SOUND1);
+ int length = 0x200000; // only the first rom is swapped on backfire!
+ UINT8 *buf1 = malloc_or_die(length);
+ UINT32 x;
+
+ for (x=0;x<length;x++)
+ {
+ UINT32 addr;
+
+ addr = BITSWAP24 (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,length);
+
+ free (buf1);
+}
+
+static READ32_HANDLER( backfire_speedup_r )
+{
+// mame_printf_debug( "%08x\n",activecpu_get_pc());
+
+ if (activecpu_get_pc()==0xce44) cpu_spinuntil_time(ATTOTIME_IN_USEC(400)); // backfire
+ if (activecpu_get_pc()==0xcee4) cpu_spinuntil_time(ATTOTIME_IN_USEC(400)); // backfira
+
+ return backfire_mainram[0x18/4];
+}
+
+
+static DRIVER_INIT( backfire )
+{
+ deco56_decrypt(REGION_GFX1); /* 141 */
+ deco56_decrypt(REGION_GFX2); /* 141 */
+ decrypt156();
+ cpunum_set_clockscale(0, 4.0f); /* core timings aren't accurate */
+ descramble_sound();
+ memory_install_read32_handler(0, ADDRESS_SPACE_PROGRAM, 0x0170018, 0x017001b, 0, 0, backfire_speedup_r );
+}
+
+GAME( 1995, backfire, 0, backfire, backfire, backfire, ROT0, "Data East Corporation", "Backfire!", 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
+
+