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// license:BSD-3-Clause
// copyright-holders:David Haywood
/* Data East Backfire!
Backfire!
Note that the alternate "Potentiometer" controls (which set 2 has as the default) must first be calibrated by holding 1P Button 2 + Start on the "I/O Check" screen.
The alternate "Optical Sensor" controls are not currently emulated.
there may still be some problems with the 156 co-processor, but it seems to be mostly correct
*/
#define DE156CPU ARM
#include "emu.h"
#include "machine/adc0808.h"
#include "machine/decocrpt.h"
#include "machine/deco156.h"
#include "machine/eepromser.h"
#include "sound/okim6295.h"
#include "sound/ymz280b.h"
#include "cpu/arm/arm.h"
#include "video/deco16ic.h"
#include "video/decospr.h"
#include "emupal.h"
#include "rendlay.h"
#include "screen.h"
#include "speaker.h"
class backfire_state : public driver_device
{
public:
backfire_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag),
m_mainram(*this, "mainram"),
m_left_priority(*this, "left_priority"),
m_right_priority(*this, "right_priority"),
m_sprgen(*this, "spritegen"),
m_sprgen2(*this, "spritegen2"),
m_maincpu(*this, "maincpu"),
m_deco_tilegen1(*this, "tilegen1"),
m_deco_tilegen2(*this, "tilegen2"),
m_eeprom(*this, "eeprom"),
m_adc(*this, "adc"),
m_palette(*this, "palette"),
m_lscreen(*this, "lscreen")
{ }
void backfire(machine_config &config);
void init_backfire();
private:
DECLARE_READ32_MEMBER(control2_r);
DECLARE_READ32_MEMBER(pf1_rowscroll_r);
DECLARE_READ32_MEMBER(pf2_rowscroll_r);
DECLARE_READ32_MEMBER(pf3_rowscroll_r);
DECLARE_READ32_MEMBER(pf4_rowscroll_r);
DECLARE_WRITE32_MEMBER(pf1_rowscroll_w);
DECLARE_WRITE32_MEMBER(pf2_rowscroll_w);
DECLARE_WRITE32_MEMBER(pf3_rowscroll_w);
DECLARE_WRITE32_MEMBER(pf4_rowscroll_w);
DECLARE_READ32_MEMBER(spriteram1_r);
DECLARE_WRITE32_MEMBER(spriteram1_w);
DECLARE_READ32_MEMBER(spriteram2_r);
DECLARE_WRITE32_MEMBER(spriteram2_w);
DECLARE_READ32_MEMBER(backfire_speedup_r);
DECLARE_WRITE8_MEMBER(eeprom_w);
DECLARE_READ32_MEMBER(pot_select_r);
virtual void machine_start() override;
virtual void video_start() override;
uint32_t screen_update_left(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
uint32_t screen_update_right(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
DECLARE_WRITE_LINE_MEMBER(deco32_vbl_interrupt);
DECLARE_WRITE32_MEMBER(irq_ack_w);
void descramble_sound();
DECO16IC_BANK_CB_MEMBER(bank_callback);
DECOSPR_PRIORITY_CB_MEMBER(pri_callback);
void backfire_map(address_map &map);
/* memory pointers */
std::unique_ptr<uint16_t[]> m_spriteram_1;
std::unique_ptr<uint16_t[]> m_spriteram_2;
required_shared_ptr<uint32_t> m_mainram;
required_shared_ptr<uint32_t> m_left_priority;
required_shared_ptr<uint32_t> m_right_priority;
optional_device<decospr_device> m_sprgen;
optional_device<decospr_device> m_sprgen2;
/* video related */
std::unique_ptr<bitmap_ind16> m_left;
std::unique_ptr<bitmap_ind16> m_right;
/* devices */
required_device<cpu_device> m_maincpu;
required_device<deco16ic_device> m_deco_tilegen1;
required_device<deco16ic_device> m_deco_tilegen2;
required_device<eeprom_serial_93cxx_device> m_eeprom;
required_device<adc0808_device> m_adc;
required_device<palette_device> m_palette;
required_device<screen_device> m_lscreen;
/* memory */
uint16_t m_pf1_rowscroll[0x0800/2];
uint16_t m_pf2_rowscroll[0x0800/2];
uint16_t m_pf3_rowscroll[0x0800/2];
uint16_t m_pf4_rowscroll[0x0800/2];
};
//uint32_t *backfire_180010, *backfire_188010;
/* I'm using the functions in deco16ic.c ... same chips, why duplicate code? */
void backfire_state::video_start()
{
m_spriteram_1 = std::make_unique<uint16_t[]>(0x2000/2);
m_spriteram_2 = std::make_unique<uint16_t[]>(0x2000/2);
/* and register the allocated ram so that save states still work */
save_item(NAME(m_pf1_rowscroll));
save_item(NAME(m_pf2_rowscroll));
save_item(NAME(m_pf3_rowscroll));
save_item(NAME(m_pf4_rowscroll));
m_left = std::make_unique<bitmap_ind16>(80*8, 32*8);
m_right = std::make_unique<bitmap_ind16>(80*8, 32*8);
save_pointer(NAME(m_spriteram_1), 0x2000/2);
save_pointer(NAME(m_spriteram_2), 0x2000/2);
save_item(NAME(*m_left));
save_item(NAME(*m_right));
}
uint32_t backfire_state::screen_update_left(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// sprites are flipped relative to tilemaps
m_sprgen->set_flip_screen(true);
/* screen 1 uses pf1 as the forground and pf3 as the background */
/* screen 2 uses pf2 as the foreground and pf4 as the background */
m_deco_tilegen1->pf_update(m_pf1_rowscroll, m_pf2_rowscroll);
m_deco_tilegen2->pf_update(m_pf3_rowscroll, m_pf4_rowscroll);
screen.priority().fill(0);
bitmap.fill(0x100, cliprect);
if (m_left_priority[0] == 0)
{
m_deco_tilegen2->tilemap_1_draw(screen, bitmap, cliprect, 0, 1);
m_deco_tilegen1->tilemap_1_draw(screen, bitmap, cliprect, 0, 2);
m_sprgen->draw_sprites(bitmap, cliprect, m_spriteram_1.get(), 0x800);
}
else if (m_left_priority[0] == 2)
{
m_deco_tilegen1->tilemap_1_draw(screen, bitmap, cliprect, 0, 2);
m_deco_tilegen2->tilemap_1_draw(screen, bitmap, cliprect, 0, 4);
m_sprgen->draw_sprites(bitmap, cliprect, m_spriteram_1.get(), 0x800);
}
else
popmessage( "unknown left priority %08x", m_left_priority[0]);
return 0;
}
uint32_t backfire_state::screen_update_right(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
// sprites are flipped relative to tilemaps
m_sprgen2->set_flip_screen(true);
/* screen 1 uses pf1 as the forground and pf3 as the background */
/* screen 2 uses pf2 as the foreground and pf4 as the background */
m_deco_tilegen1->pf_update(m_pf1_rowscroll, m_pf2_rowscroll);
m_deco_tilegen2->pf_update(m_pf3_rowscroll, m_pf4_rowscroll);
screen.priority().fill(0);
bitmap.fill(0x500, cliprect);
if (m_right_priority[0] == 0)
{
m_deco_tilegen2->tilemap_2_draw(screen, bitmap, cliprect, 0, 1);
m_deco_tilegen1->tilemap_2_draw(screen, bitmap, cliprect, 0, 2);
m_sprgen2->draw_sprites(bitmap, cliprect, m_spriteram_2.get(), 0x800);
}
else if (m_right_priority[0] == 2)
{
m_deco_tilegen1->tilemap_2_draw(screen, bitmap, cliprect, 0, 2);
m_deco_tilegen2->tilemap_2_draw(screen, bitmap, cliprect, 0, 4);
m_sprgen2->draw_sprites(bitmap, cliprect, m_spriteram_2.get(), 0x800);
}
else
popmessage( "unknown right priority %08x", m_right_priority[0]);
return 0;
}
WRITE8_MEMBER(backfire_state::eeprom_w)
{
m_eeprom->clk_write(BIT(data, 1) ? ASSERT_LINE : CLEAR_LINE);
m_eeprom->di_write(BIT(data, 0));
m_eeprom->cs_write(BIT(data, 2) ? ASSERT_LINE : CLEAR_LINE);
}
/* map 32-bit writes to 16-bit */
READ32_MEMBER(backfire_state::pf1_rowscroll_r){ return m_pf1_rowscroll[offset] ^ 0xffff0000; }
READ32_MEMBER(backfire_state::pf2_rowscroll_r){ return m_pf2_rowscroll[offset] ^ 0xffff0000; }
READ32_MEMBER(backfire_state::pf3_rowscroll_r){ return m_pf3_rowscroll[offset] ^ 0xffff0000; }
READ32_MEMBER(backfire_state::pf4_rowscroll_r){ return m_pf4_rowscroll[offset] ^ 0xffff0000; }
WRITE32_MEMBER(backfire_state::pf1_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf1_rowscroll[offset]); }
WRITE32_MEMBER(backfire_state::pf2_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf2_rowscroll[offset]); }
WRITE32_MEMBER(backfire_state::pf3_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf3_rowscroll[offset]); }
WRITE32_MEMBER(backfire_state::pf4_rowscroll_w){ data &= 0x0000ffff; mem_mask &= 0x0000ffff; COMBINE_DATA(&m_pf4_rowscroll[offset]); }
READ32_MEMBER(backfire_state::pot_select_r)
{
if (!machine().side_effects_disabled())
m_adc->address_offset_start_w(space, offset, 0);
return 0;
}
READ32_MEMBER(backfire_state::spriteram1_r)
{
return m_spriteram_1[offset] ^ 0xffff0000;
}
WRITE32_MEMBER(backfire_state::spriteram1_w)
{
data &= 0x0000ffff;
mem_mask &= 0x0000ffff;
COMBINE_DATA(&m_spriteram_1[offset]);
}
READ32_MEMBER(backfire_state::spriteram2_r)
{
return m_spriteram_2[offset] ^ 0xffff0000;
}
WRITE32_MEMBER(backfire_state::spriteram2_w)
{
data &= 0x0000ffff;
mem_mask &= 0x0000ffff;
COMBINE_DATA(&m_spriteram_2[offset]);
}
void backfire_state::backfire_map(address_map &map)
{
map(0x000000, 0x0fffff).rom();
map(0x100000, 0x10001f).rw(m_deco_tilegen1, FUNC(deco16ic_device::pf_control_dword_r), FUNC(deco16ic_device::pf_control_dword_w));
map(0x110000, 0x111fff).rw(m_deco_tilegen1, FUNC(deco16ic_device::pf1_data_dword_r), FUNC(deco16ic_device::pf1_data_dword_w));
map(0x114000, 0x115fff).rw(m_deco_tilegen1, FUNC(deco16ic_device::pf2_data_dword_r), FUNC(deco16ic_device::pf2_data_dword_w));
map(0x120000, 0x120fff).rw(FUNC(backfire_state::pf1_rowscroll_r), FUNC(backfire_state::pf1_rowscroll_w));
map(0x124000, 0x124fff).rw(FUNC(backfire_state::pf2_rowscroll_r), FUNC(backfire_state::pf2_rowscroll_w));
map(0x130000, 0x13001f).rw(m_deco_tilegen2, FUNC(deco16ic_device::pf_control_dword_r), FUNC(deco16ic_device::pf_control_dword_w));
map(0x140000, 0x141fff).rw(m_deco_tilegen2, FUNC(deco16ic_device::pf1_data_dword_r), FUNC(deco16ic_device::pf1_data_dword_w));
map(0x144000, 0x145fff).rw(m_deco_tilegen2, FUNC(deco16ic_device::pf2_data_dword_r), FUNC(deco16ic_device::pf2_data_dword_w));
map(0x150000, 0x150fff).rw(FUNC(backfire_state::pf3_rowscroll_r), FUNC(backfire_state::pf3_rowscroll_w));
map(0x154000, 0x154fff).rw(FUNC(backfire_state::pf4_rowscroll_r), FUNC(backfire_state::pf4_rowscroll_w));
map(0x160000, 0x161fff).rw(m_palette, FUNC(palette_device::read16), FUNC(palette_device::write16)).umask32(0x0000ffff).share("palette");
map(0x170000, 0x177fff).ram().share("mainram");// main ram
map(0x180010, 0x180013).nopw(); // always 180010 ?
map(0x184000, 0x185fff).rw(FUNC(backfire_state::spriteram1_r), FUNC(backfire_state::spriteram1_w));
map(0x188010, 0x188013).nopw(); // always 188010 ?
map(0x18c000, 0x18dfff).rw(FUNC(backfire_state::spriteram2_r), FUNC(backfire_state::spriteram2_w));
map(0x190000, 0x190003).portr("IN0");
map(0x194000, 0x194003).portr("IN1");
map(0x1a4000, 0x1a4000).w(FUNC(backfire_state::eeprom_w));
map(0x1a8000, 0x1a8003).ram().share("left_priority");
map(0x1ac000, 0x1ac003).ram().share("right_priority");
map(0x1b0000, 0x1b0003).w(FUNC(backfire_state::irq_ack_w));
map(0x1c0000, 0x1c0007).rw("ymz", FUNC(ymz280b_device::read), FUNC(ymz280b_device::write)).umask32(0x000000ff);
map(0x1e4000, 0x1e4000).r("adc", FUNC(adc0808_device::data_r));
map(0x1e8000, 0x1e8007).r(FUNC(backfire_state::pot_select_r));
}
static INPUT_PORTS_START( backfire )
PORT_START("IN0")
PORT_BIT( 0x00000001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
PORT_BIT( 0x00000002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
PORT_BIT( 0x00000004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
PORT_BIT( 0x00000008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
PORT_BIT( 0x00000010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
PORT_BIT( 0x00000020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
PORT_BIT( 0x00000040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
PORT_BIT( 0x00000080, IP_ACTIVE_LOW, IPT_START1 )
PORT_BIT( 0x0000ff00, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x00010000, IP_ACTIVE_LOW, IPT_COIN1 )
PORT_BIT( 0x00020000, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x00040000, IP_ACTIVE_LOW, IPT_SERVICE1 )
PORT_SERVICE_NO_TOGGLE( 0x00080000, IP_ACTIVE_LOW )
PORT_BIT( 0x00100000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("lscreen")
PORT_BIT( 0x00200000, IP_ACTIVE_LOW, IPT_UNUSED ) /* 'soundmask' */
PORT_BIT( 0x00400000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("lscreen")
PORT_BIT( 0x00800000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x01000000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("eeprom", eeprom_serial_93cxx_device, do_read)
PORT_BIT( 0x02000000, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_BIT( 0x04000000, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_DEVICE_MEMBER("adc", adc0808_device, eoc_r)
PORT_BIT( 0xf8000000, IP_ACTIVE_LOW, IPT_UNKNOWN )
PORT_START("IN1")
PORT_BIT( 0x00000001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x00000002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x00000004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x00000008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
PORT_BIT( 0x00000010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
PORT_BIT( 0x00000020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
PORT_BIT( 0x00000040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
PORT_BIT( 0x00000080, IP_ACTIVE_LOW, IPT_START2 )
PORT_BIT( 0x0000ff00, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x00010000, IP_ACTIVE_LOW, IPT_COIN2 )
PORT_BIT( 0x00020000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_BIT( 0x00040000, IP_ACTIVE_LOW, IPT_SERVICE2 )
PORT_BIT( 0xfff80000, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("PADDLE0")
PORT_BIT ( 0xff, 0x80, IPT_PADDLE ) PORT_PLAYER(1) PORT_MINMAX(0x20, 0xe0) PORT_SENSITIVITY(100) PORT_KEYDELTA(4) PORT_REVERSE
PORT_START("PADDLE1")
PORT_BIT ( 0xff, 0x80, IPT_PADDLE ) PORT_PLAYER(2) PORT_MINMAX(0x20, 0xe0) PORT_SENSITIVITY(100) PORT_KEYDELTA(4) PORT_REVERSE
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( gfx_backfire )
GFXDECODE_ENTRY( "gfx1", 0, charlayout, 0, 128 ) /* Characters 8x8 */
GFXDECODE_ENTRY( "gfx1", 0, tilelayout, 0, 128 ) /* Tiles 16x16 */
GFXDECODE_ENTRY( "gfx2", 0, charlayout, 0, 128 ) /* Characters 8x8 */
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
WRITE_LINE_MEMBER(backfire_state::deco32_vbl_interrupt)
{
if (state)
m_maincpu->set_input_line(ARM_IRQ_LINE, ASSERT_LINE);
}
WRITE32_MEMBER(backfire_state::irq_ack_w)
{
m_maincpu->set_input_line(ARM_IRQ_LINE, CLEAR_LINE);
}
DECO16IC_BANK_CB_MEMBER(backfire_state::bank_callback)
{
// osd_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;
}
DECOSPR_PRIORITY_CB_MEMBER(backfire_state::pri_callback)
{
switch (pri & 0xc000)
{
case 0x0000: return 0; // numbers, people, cars when in the air, status display..
case 0x4000: return 0xf0; // cars most of the time
case 0x8000: return 0; // car wheels during jump?
case 0xc000: return 0xf0; // car wheels in race?
}
return 0;
}
void backfire_state::machine_start()
{
}
MACHINE_CONFIG_START(backfire_state::backfire)
/* basic machine hardware */
MCFG_DEVICE_ADD("maincpu", ARM, 28000000/4) /* Unconfirmed */
MCFG_DEVICE_PROGRAM_MAP(backfire_map)
EEPROM_93C46_16BIT(config, "eeprom");
ADC0808(config, m_adc, 1000000); // unknown clock
m_adc->in_callback<0>().set_ioport("PADDLE0");
m_adc->in_callback<1>().set_ioport("PADDLE1");
/* video hardware */
MCFG_PALETTE_ADD("palette", 2048)
MCFG_PALETTE_FORMAT(xBBBBBGGGGGRRRRR)
MCFG_DEVICE_ADD("gfxdecode", GFXDECODE, "palette", gfx_backfire)
config.set_default_layout(layout_dualhsxs);
MCFG_SCREEN_ADD("lscreen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
MCFG_SCREEN_SIZE(40*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1)
MCFG_SCREEN_UPDATE_DRIVER(backfire_state, screen_update_left)
MCFG_SCREEN_PALETTE("palette")
MCFG_SCREEN_VBLANK_CALLBACK(WRITELINE(*this, backfire_state, deco32_vbl_interrupt))
MCFG_SCREEN_ADD("rscreen", RASTER)
MCFG_SCREEN_REFRESH_RATE(60)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500) /* not accurate */)
MCFG_SCREEN_SIZE(40*8, 32*8)
MCFG_SCREEN_VISIBLE_AREA(0*8, 40*8-1, 1*8, 31*8-1)
MCFG_SCREEN_UPDATE_DRIVER(backfire_state, screen_update_right)
MCFG_SCREEN_PALETTE("palette")
MCFG_DEVICE_ADD("tilegen1", DECO16IC, 0)
MCFG_DECO16IC_SET_SCREEN("lscreen")
MCFG_DECO16IC_SPLIT(0)
MCFG_DECO16IC_PF1_SIZE(DECO_64x32)
MCFG_DECO16IC_PF2_SIZE(DECO_64x32)
MCFG_DECO16IC_PF1_TRANS_MASK(0x0f)
MCFG_DECO16IC_PF2_TRANS_MASK(0x0f)
MCFG_DECO16IC_PF1_COL_BANK(0x00)
MCFG_DECO16IC_PF2_COL_BANK(0x40)
MCFG_DECO16IC_PF1_COL_MASK(0x0f)
MCFG_DECO16IC_PF2_COL_MASK(0x0f)
MCFG_DECO16IC_BANK1_CB(backfire_state, bank_callback)
MCFG_DECO16IC_BANK2_CB(backfire_state, bank_callback)
MCFG_DECO16IC_PF12_8X8_BANK(0)
MCFG_DECO16IC_PF12_16X16_BANK(1)
MCFG_DECO16IC_GFXDECODE("gfxdecode")
MCFG_DEVICE_ADD("tilegen2", DECO16IC, 0)
MCFG_DECO16IC_SET_SCREEN("lscreen")
MCFG_DECO16IC_SPLIT(0)
MCFG_DECO16IC_PF1_SIZE(DECO_64x32)
MCFG_DECO16IC_PF2_SIZE(DECO_64x32)
MCFG_DECO16IC_PF1_TRANS_MASK(0x0f)
MCFG_DECO16IC_PF2_TRANS_MASK(0x0f)
MCFG_DECO16IC_PF1_COL_BANK(0x10)
MCFG_DECO16IC_PF2_COL_BANK(0x50)
MCFG_DECO16IC_PF1_COL_MASK(0x0f)
MCFG_DECO16IC_PF2_COL_MASK(0x0f)
MCFG_DECO16IC_BANK1_CB(backfire_state, bank_callback)
MCFG_DECO16IC_BANK2_CB(backfire_state, bank_callback)
MCFG_DECO16IC_PF12_8X8_BANK(2)
MCFG_DECO16IC_PF12_16X16_BANK(3)
MCFG_DECO16IC_GFXDECODE("gfxdecode")
MCFG_DEVICE_ADD("spritegen", DECO_SPRITE, 0)
MCFG_VIDEO_SET_SCREEN("lscreen")
MCFG_DECO_SPRITE_GFX_REGION(4)
MCFG_DECO_SPRITE_PRIORITY_CB(backfire_state, pri_callback)
MCFG_DECO_SPRITE_GFXDECODE("gfxdecode")
MCFG_DEVICE_ADD("spritegen2", DECO_SPRITE, 0)
MCFG_VIDEO_SET_SCREEN("rscreen")
MCFG_DECO_SPRITE_GFX_REGION(5)
MCFG_DECO_SPRITE_PRIORITY_CB(backfire_state, pri_callback)
MCFG_DECO_SPRITE_GFXDECODE("gfxdecode")
/* sound hardware */
SPEAKER(config, "lspeaker").front_left();
SPEAKER(config, "rspeaker").front_right();
MCFG_DEVICE_ADD("ymz", YMZ280B, 28000000 / 2)
MCFG_SOUND_ROUTE(0, "lspeaker", 1.0)
MCFG_SOUND_ROUTE(1, "rspeaker", 1.0)
MACHINE_CONFIG_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", 0 ) /* 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", 0 ) /* Tiles 2 */
ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) )
ROM_REGION( 0x400000, "gfx3", 0 ) /* 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", 0 ) /* 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", 0 )
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( backfirea )
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", 0 ) /* 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", 0 ) /* Tiles 2 */
ROM_LOAD( "mbz-02.12a", 0x000000, 0x100000, CRC(2bd2b0a1) SHA1(8fcb37728f3248ad55e48f2d398b014b36c9ec05) )
ROM_REGION( 0x400000, "gfx3", 0 ) /* 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", 0 ) /* 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
void backfire_state::descramble_sound()
{
uint8_t *rom = memregion("ymz")->base();
int length = 0x200000; // only the first rom is swapped on backfire!
std::vector<uint8_t> buf1(length);
uint32_t x;
for (x = 0; x < length; x++)
{
uint32_t addr;
addr = bitswap<24> (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[0], length);
}
READ32_MEMBER(backfire_state::backfire_speedup_r)
{
//osd_printf_debug( "%08x\n",m_maincpu->pc());
if (m_maincpu->pc() == 0xce44) m_maincpu->spin_until_time(attotime::from_usec(400)); // backfire
if (m_maincpu->pc() == 0xcee4) m_maincpu->spin_until_time(attotime::from_usec(400)); // backfirea
return m_mainram[0x18/4];
}
void backfire_state::init_backfire()
{
deco56_decrypt_gfx(machine(), "gfx1"); /* 141 */
deco56_decrypt_gfx(machine(), "gfx2"); /* 141 */
deco156_decrypt(machine());
m_maincpu->set_clock_scale(4.0f); /* core timings aren't accurate */
descramble_sound();
m_maincpu->space(AS_PROGRAM).install_read_handler(0x0170018, 0x017001b, read32_delegate(FUNC(backfire_state::backfire_speedup_r), this));
}
GAME( 1995, backfire, 0, backfire, backfire, backfire_state, init_backfire, ROT0, "Data East Corporation", "Backfire! (set 1)", MACHINE_SUPPORTS_SAVE )
GAME( 1995, backfirea, backfire, backfire, backfire, backfire_state, init_backfire, ROT0, "Data East Corporation", "Backfire! (set 2)", MACHINE_SUPPORTS_SAVE ) // defaults to wheel controls, must change to joystick to play