diff --git a/scripts/target/mame/arcade.lua b/scripts/target/mame/arcade.lua
index 6f1e9df711e..da5856f7be6 100644
--- a/scripts/target/mame/arcade.lua
+++ b/scripts/target/mame/arcade.lua
@@ -3941,6 +3941,8 @@ files {
 	MAME_DIR .. "src/mame/drivers/slapshot.cpp",
 	MAME_DIR .. "src/mame/includes/slapshot.h",
 	MAME_DIR .. "src/mame/video/slapshot.cpp",
+	MAME_DIR .. "src/mame/drivers/spdheat.cpp",
+	MAME_DIR .. "src/mame/includes/spdheat.h",
 	MAME_DIR .. "src/mame/drivers/ssrj.cpp",
 	MAME_DIR .. "src/mame/includes/ssrj.h",
 	MAME_DIR .. "src/mame/video/ssrj.cpp",
diff --git a/src/mame/drivers/spdheat.cpp b/src/mame/drivers/spdheat.cpp
new file mode 100644
index 00000000000..a61dc5a3359
--- /dev/null
+++ b/src/mame/drivers/spdheat.cpp
@@ -0,0 +1,752 @@
+// license:BSD-3-Clause
+// copyright-holders:Philip Bennett
+/***************************************************************************
+
+    Super Dead Heat hardware
+
+    driver by Phil Bennett
+ 
+    TODO:
+      * Waiting to receive manual and schematics
+      * DIP switches (see above)
+      * Sound filtering
+
+***************************************************************************/
+
+#include "emu.h"
+#include "includes/spdheat.h"
+#include "spdheat.lh"
+
+#include "speaker.h"
+#include "cpu/m68000/m68000.h"
+#include "cpu/z80/z80.h"
+#include "machine/watchdog.h"
+#include "sound/2203intf.h"
+#include "sound/flt_vol.h"
+#include "sound/volt_reg.h"
+
+
+
+/*************************************
+ *
+ *  Machine initialization
+ *
+ *************************************/
+
+void spdheat_state::machine_start()
+{
+	save_pointer(NAME(m_sound_data), sizeof(m_sound_data));
+	save_item(NAME(m_sound_status));
+	save_item(NAME(m_sub_data));
+	save_item(NAME(m_sub_status));
+}
+
+void spdheat_state::machine_reset()
+{
+	m_sound_status = 0x000f;
+	m_sub_data = 0;
+}
+
+
+/*************************************
+ *
+ *  Video reset
+ *
+ *************************************/
+
+void spdheat_state::video_start()
+{
+	m_fg_tilemap[0] = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(spdheat_state::get_fg_tile_info<0>), this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
+	m_fg_tilemap[1] = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(spdheat_state::get_fg_tile_info<1>), this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
+	m_fg_tilemap[2] = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(spdheat_state::get_fg_tile_info<2>), this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
+	m_fg_tilemap[3] = &machine().tilemap().create(*m_gfxdecode, tilemap_get_info_delegate(FUNC(spdheat_state::get_fg_tile_info<3>), this), TILEMAP_SCAN_ROWS, 8, 8, 32, 32);
+}
+
+
+/*************************************
+ *
+ *  Video memory access
+ *
+ *************************************/
+
+template<int screen>
+WRITE16_MEMBER(spdheat_state::text_w)
+{
+	COMBINE_DATA(&m_fg_ram[screen][offset]);
+	m_fg_tilemap[screen]->mark_tile_dirty(offset);
+}
+
+
+template<int screen>
+TILE_GET_INFO_MEMBER(spdheat_state::get_fg_tile_info)
+{
+	uint16_t data = m_fg_ram[screen][tile_index];
+	uint16_t code = data & 0x07ff;
+	uint16_t color = (data & 0x3800) >> 12;
+	SET_TILE_INFO_MEMBER(0, code, color, TILE_FLIPYX((data & 0xc000) >> 14));
+}
+
+
+/*************************************
+ *
+ *  Drawing routines
+ *
+ *************************************/
+
+void spdheat_state::draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect, uint32_t xo, uint32_t yo)
+{
+	gfx_element *gfx = m_gfxdecode->gfx(1);
+	
+	/*
+	 Sprite RAM format:
+	 
+	 0:  .... .... .... .... = ?
+	 
+	 1:  .... .... xxxx xxxx = Y position
+	 .... ..x. .... .... = Y position
+	 x... .... .... .... = 0 = 16x16, 1 = 16x32
+	 
+	 2:  .... ..xx xxxx xxxx = Code
+	 ..xx xx.. .... .... = Color
+	 .x.. .... .... .... = X flip
+	 x... .... .... .... = Y flip
+	 
+	 3:  .... .xxx xxxx xxxx = X position
+	 */
+	
+	for (int offs = (0x800 / 2) - 4; offs >= 0; offs -= 4)
+	{
+		int code = (m_spriteram[offs + 2] & 0x3ff) ^ 0x200;
+		int color = (m_spriteram[offs + 2] >> 10) & 0x0f;
+		
+		int y = 256 - ((m_spriteram[offs + 1] & 0x0ff));
+		int x = (int16_t)(m_spriteram[offs + 3] & 0xffff);
+		
+		int flipx = BIT(m_spriteram[offs + 2], 14);
+		int flipy = BIT(m_spriteram[offs + 2], 15);
+		
+		// TODO: revisit
+		if (xo == 0 && x >= 0)
+			x &= 0x3ff;
+		
+		if (xo == 1)
+		{
+			if (x < 384)
+				continue;
+			
+			x -= 512;
+		}
+		
+		if (yo != BIT(m_spriteram[offs + 1], 9))
+			continue;
+		
+		if ((m_spriteram[offs + 1] & 0x8000) == 0)
+		{
+			if (flipy)
+			{
+				// 16 x 32 mode
+				gfx->transpen(bitmap, cliprect, code, color, flipx, flipy, x, y, 0);
+				gfx->transpen(bitmap, cliprect, code+1, color, flipx, flipy, x, y - 16, 0);
+			}
+			else
+			{
+				// 16 x 16 mode
+				gfx->transpen(bitmap, cliprect, code, color, flipx, flipy, x, y - 16, 0);
+				gfx->transpen(bitmap, cliprect, code + 1, color, flipx, flipy, x, y, 0);
+			}
+		}
+		else
+		{
+			gfx->transpen(bitmap, cliprect, code, color, flipx, flipy, x, y, 0);
+		}
+	}
+}
+
+
+template<int which>
+uint32_t spdheat_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
+{
+	m_fg_tilemap[which]->draw(screen, bitmap, cliprect, 0, 0);
+	draw_sprites(bitmap, cliprect, which & 1, (which & 2) >> 1);
+	return 0;
+}
+
+
+/*************************************
+ *
+ *  Main memory map
+ *
+ *************************************/
+
+void spdheat_state::main_map(address_map &map)
+{
+	map(0x000000, 0x02ffff).rom();
+	map(0x080000, 0x083fff).ram();
+	map(0x088000, 0x0887ff).ram().w(FUNC(spdheat_state::text_w<0>)).share("fg_ram0"); // IC11?
+	map(0x088800, 0x088fff).ram().w(FUNC(spdheat_state::text_w<1>)).share("fg_ram1"); // IC27?
+	map(0x08c000, 0x08c7ff).ram().w(FUNC(spdheat_state::text_w<2>)).share("fg_ram2"); // IC16?
+	map(0x08c800, 0x08cfff).ram().w(FUNC(spdheat_state::text_w<3>)).share("fg_ram3"); // IC32?
+	map(0x094000, 0x094001).rw(FUNC(spdheat_state::sound_status_r), FUNC(spdheat_state::sound_w<0>));
+	map(0x094002, 0x094003).w(FUNC(spdheat_state::sound_w<1>));
+	map(0x094004, 0x094005).w(FUNC(spdheat_state::sound_w<2>));
+	map(0x094006, 0x094007).w(FUNC(spdheat_state::sound_w<3>));
+	map(0x090000, 0x0907ff).ram().share("spriteram");
+	map(0x098000, 0x0987ff).ram().w(m_palette0, FUNC(palette_device::write16)).share("palette0");
+	map(0x099000, 0x0997ff).ram().w(m_palette1, FUNC(palette_device::write16)).share("palette1");
+	map(0x09a000, 0x09a7ff).ram().w(m_palette2, FUNC(palette_device::write16)).share("palette2");
+	map(0x09b000, 0x09b7ff).ram().w(m_palette3, FUNC(palette_device::write16)).share("palette3");
+	map(0x09c000, 0x09c001).portr("HANDLE1");
+	map(0x09c002, 0x09c003).portr("ACCEL1");
+	map(0x09c004, 0x09c005).portr("HANDLE2");
+	map(0x09c006, 0x09c007).portr("ACCEL2");
+	map(0x09c008, 0x09c009).portr("HANDLE3");
+	map(0x09c00a, 0x09c00b).portr("ACCEL3");
+	map(0x09c00c, 0x09c00d).portr("HANDLE4");
+	map(0x09c00e, 0x09c00f).portr("ACCEL4");
+	map(0x09c010, 0x09c011).portr("IN0");
+	map(0x09c012, 0x09c013).portr("IN1");
+	map(0x09c014, 0x09c015).portr("SYSTEM");
+	map(0x09c016, 0x09c017).portr("IN2");
+	map(0x09c018, 0x09c019).portr("DSWA");
+	map(0x09c01a, 0x09c01b).portr("DSWB");
+	map(0x09c01c, 0x09c01d).portr("DSWC");
+	map(0x09c01e, 0x09c01f).portr("DSWD");
+	map(0x09c020, 0x09c021).nopw();
+	map(0x09c022, 0x09c023).nopw();
+	map(0x09c024, 0x09c025).nopw();
+	map(0x09c026, 0x09c027).nopw();
+}
+
+
+/*************************************
+ *
+ *  Sound CPU memory map
+ *
+ *************************************/
+
+void spdheat_state::sound_map(address_map &map)
+{
+	map(0x0000, 0x7fff).rom();
+	map(0xc000, 0xc7ff).ram();
+	map(0xd000, 0xd001).rw("ym1", FUNC(ym2203_device::read), FUNC(ym2203_device::write));
+	map(0xd100, 0xd101).rw("ym2", FUNC(ym2203_device::read), FUNC(ym2203_device::write));
+	map(0xd200, 0xd200).w("ym3", FUNC(ay8910_device::address_w));
+	map(0xd201, 0xd201).rw("ym3", FUNC(ay8910_device::data_r), FUNC(ay8910_device::data_w));
+	map(0xd300, 0xd300).w("ym4", FUNC(ay8910_device::address_w));
+	map(0xd301, 0xd301).rw("ym4", FUNC(ay8910_device::data_r), FUNC(ay8910_device::data_w));
+	map(0xd400, 0xd400).nopw(); // Filter?
+	map(0xd420, 0xd420).nopw(); // Filter?
+	map(0xd440, 0xd440).nopw(); // Filter?
+	map(0xd460, 0xd460).nopw(); // Filter?
+	map(0xd480, 0xd480).nopw(); // Filter?
+	map(0xd4a0, 0xd4a0).nopw(); // Filter?
+	map(0xd4e0, 0xd4e0).nopw(); // Filter?
+	map(0xd500, 0xd500).nopw(); // Filter?
+	map(0xd520, 0xd520).nopw(); // Filter?
+	map(0xd540, 0xd540).nopw(); // Filter?
+	map(0xd560, 0xd560).nopw(); // Filter?
+	map(0xd580, 0xd580).nopw(); // Filter?
+	map(0xd5a0, 0xd5a0).nopw(); // Filter?
+	map(0xd5e0, 0xd5e0).nopw(); // Filter?
+	map(0xd600, 0xd600).r(FUNC(spdheat_state::soundstatus_r));
+	map(0xd700, 0xd700).ram(); // ? Read lots
+	map(0xd800, 0xd800).rw(FUNC(spdheat_state::sndcpu_sound_r<0>), FUNC(spdheat_state::sub_nmi_w));
+	map(0xd801, 0xd801).r(FUNC(spdheat_state::sndcpu_sound_r<1>));
+	map(0xd802, 0xd802).r(FUNC(spdheat_state::sndcpu_sound_r<2>));
+	map(0xd803, 0xd803).r(FUNC(spdheat_state::sndcpu_sound_r<3>));
+	map(0xd807, 0xd807).r(FUNC(spdheat_state::sub_status_r));
+	map(0xe000, 0xffff).rom(); // Diagnostic ROM
+}
+
+
+/*************************************
+ *
+ *  ADPCM CPU memory map
+ *
+ *************************************/
+
+void spdheat_state::sub_map(address_map &map)
+{
+	map(0x0000, 0xffff).rom();
+	map(0x8000, 0x8000).w(FUNC(spdheat_state::sub_dac_w));
+	map(0xf800, 0xffff).ram();
+}
+
+void spdheat_state::sub_io_map(address_map &map)
+{
+	map.global_mask(0xff);
+	map(0xff, 0xff).rw(FUNC(spdheat_state::sub_snd_r), FUNC(spdheat_state::sub_status_w));
+}
+
+
+/*************************************
+ *
+ *  Sound communications
+ *
+ *************************************/
+
+READ16_MEMBER(spdheat_state::sound_status_r)
+{
+	// 1s mean not busy?
+	return m_sound_status;
+}
+
+template<int screen>
+WRITE16_MEMBER(spdheat_state::sound_w)
+{
+	m_sound_data[screen] = data;
+	m_sound_status &= ~(1 << screen);
+}
+
+READ8_MEMBER(spdheat_state::sub_r)
+{
+	return 0; // TODO
+}
+
+WRITE8_MEMBER(spdheat_state::sub_dac_w)
+{
+	m_dac->write(data);
+}
+
+READ8_MEMBER(spdheat_state::soundstatus_r)
+{
+	return m_sound_status ^ 0xf;
+}
+
+template<int screen>
+READ8_MEMBER(spdheat_state::sndcpu_sound_r)
+{
+	m_sound_status |= 1 << screen;
+	return m_sound_data[screen];
+}
+
+READ8_MEMBER(spdheat_state::sub_status_r)
+{
+	return m_sub_status ? 0x80 : 0;
+}
+
+READ8_MEMBER(spdheat_state::sub_snd_r)
+{
+	return m_sub_data;
+}
+
+WRITE8_MEMBER(spdheat_state::sub_status_w)
+{
+	m_sub_status = 0;
+}
+
+// Write command to sub CPU
+WRITE8_MEMBER(spdheat_state::sub_nmi_w)
+{
+	// Sub data is cleared by /NMI?
+	m_sub_data = data;
+	m_subcpu->pulse_input_line(INPUT_LINE_NMI, attotime::zero);
+	// It is busy
+	m_sub_status = 1;
+}
+
+
+/*************************************
+ *
+ *  Sound I/O
+ *
+ *************************************/
+
+WRITE8_MEMBER(spdheat_state::ym1_port_a_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym1_port_b_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym2_port_a_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym2_port_b_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym3_port_a_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym3_port_b_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym4_port_a_w)
+{
+	
+}
+
+WRITE8_MEMBER(spdheat_state::ym4_port_b_w)
+{
+	
+}
+
+
+/*************************************
+ *
+ *  Input ports
+ *
+ *************************************/
+
+static INPUT_PORTS_START( spdheat )
+	PORT_START("SYSTEM")
+	PORT_BIT( 0x0001, IP_ACTIVE_HIGH, IPT_COIN1 )
+	PORT_BIT( 0x0002, IP_ACTIVE_HIGH, IPT_COIN2 )
+	PORT_BIT( 0x0004, IP_ACTIVE_HIGH, IPT_COIN4 )
+	PORT_BIT( 0x0008, IP_ACTIVE_HIGH, IPT_COIN3 )
+	PORT_BIT( 0x0010, IP_ACTIVE_LOW, IPT_SERVICE1 )
+	PORT_BIT( 0x0020, IP_ACTIVE_LOW, IPT_SERVICE3 )
+	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_TILT )
+	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+
+	PORT_START("DSWA")
+	PORT_DIPNAME( 0x0001, 0x0001, "Freeze" )
+	PORT_DIPSETTING(      0x0001, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0002, 0x0002, "Stop Timer (Cheat)" )
+	PORT_DIPSETTING(      0x0002, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0004, 0x0004, DEF_STR( Free_Play ) )
+	PORT_DIPSETTING(      0x0004, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0008, 0x0008, DEF_STR( Test ) )
+	PORT_DIPSETTING(      0x0008, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0010, 0x0010, DEF_STR( Demo_Sounds ) )
+	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0020, 0x0020, "Test Pattern" )
+	PORT_DIPSETTING(      0x0020, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0040, 0x0040, "Finish Lap (Cheat)" ) // CHECKME
+	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0080, 0x0080, "UNK7" )
+	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+
+	PORT_START("DSWB")
+	PORT_DIPNAME( 0x000F, 0x0000, DEF_STR( Coinage ) )
+	PORT_DIPSETTING(      0x000F, DEF_STR( 9C_1C ) )
+	PORT_DIPSETTING(      0x000E, DEF_STR( 8C_1C ) )
+	PORT_DIPSETTING(      0x000D, DEF_STR( 7C_1C ) )
+	PORT_DIPSETTING(      0x000C, DEF_STR( 6C_1C ) )
+	PORT_DIPSETTING(      0x000B, DEF_STR( 5C_1C ) )
+	PORT_DIPSETTING(      0x000A, DEF_STR( 4C_1C ) )
+	PORT_DIPSETTING(      0x0009, DEF_STR( 3C_1C ) )
+	PORT_DIPSETTING(      0x0008, DEF_STR( 2C_1C ) )
+	PORT_DIPSETTING(      0x0007, DEF_STR( 1C_8C ) )
+	PORT_DIPSETTING(      0x0006, DEF_STR( 1C_7C ) )
+	PORT_DIPSETTING(      0x0005, DEF_STR( 1C_6C ) )
+	PORT_DIPSETTING(      0x0004, DEF_STR( 1C_5C ) )
+	PORT_DIPSETTING(      0x0003, DEF_STR( 1C_4C ) )
+	PORT_DIPSETTING(      0x0002, DEF_STR( 1C_3C ) )
+	PORT_DIPSETTING(      0x0001, DEF_STR( 1C_2C ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( 1C_1C ) )
+
+	PORT_DIPNAME( 0x0010, 0x0010, "B_UNK4" )
+	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0020, 0x0020, "B_UNK5" )
+	PORT_DIPSETTING(      0x0020, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0040, 0x0040, "B_UNK6" )
+	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0080, 0x0080, "B_UNK7" )
+	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+
+	PORT_START("DSWC")
+	PORT_DIPNAME( 0x0001, 0x0001, "Allow customizations" )
+	PORT_DIPSETTING(      0x0000, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0001, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0002, 0x0002, "C_UNK1" )
+	PORT_DIPSETTING(      0x0002, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x000C, 0x0004, "Timer Setting" )
+	PORT_DIPSETTING(      0x0000, DEF_STR( Easy ) )
+	PORT_DIPSETTING(      0x0004, DEF_STR( Normal ) )
+	PORT_DIPSETTING(      0x0008, DEF_STR( Hard ) )
+	PORT_DIPSETTING(      0x000C, DEF_STR( Hardest ) )
+	PORT_DIPNAME( 0x0010, 0x0010, "Coin Display" )
+	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0020, 0x0000, DEF_STR( Language ) )
+	PORT_DIPSETTING(      0x0020, DEF_STR( Japanese ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( English ) )
+	PORT_DIPNAME( 0x0040, 0x0040, DEF_STR( Unused ) )
+	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0080, 0x0080, "Coin System" )
+	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+
+	PORT_START("DSWD")
+	PORT_DIPNAME( 0x0001, 0x0001, "D_UNK0" )
+	PORT_DIPSETTING(      0x0001, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0002, 0x0002, "Drag Race" )
+	PORT_DIPSETTING(      0x0002, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0004, 0x0004, "D_UNK2" )
+	PORT_DIPSETTING(      0x0004, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0008, 0x0008, "D_UNK3" )
+	PORT_DIPSETTING(      0x0008, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0010, 0x0010, "D_UNK4" )
+	PORT_DIPSETTING(      0x0010, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0020, 0x0020, "D_UNK5" )
+	PORT_DIPSETTING(      0x0020, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0040, 0x0040, "D_UNK6" )
+	PORT_DIPSETTING(      0x0040, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+	PORT_DIPNAME( 0x0080, 0x0080, "D_UNK7" )
+	PORT_DIPSETTING(      0x0080, DEF_STR( Off ) )
+	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
+
+	PORT_START("IN0")
+	PORT_BIT( 0x0003, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_TOGGLE PORT_NAME("P1 Shift") PORT_PLAYER(1)
+	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_NAME("Reserved 2")
+	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_NAME("Reserved 1")
+	PORT_BIT( 0x0030, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_TOGGLE PORT_NAME("P2 Shift") PORT_PLAYER(2)
+	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_SERVICE2 )
+	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+
+	PORT_START("IN1")
+	PORT_BIT( 0x0003, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_TOGGLE PORT_NAME("P3 Shift") PORT_PLAYER(3)
+	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_NAME("Reserved 3")
+	PORT_BIT( 0x0030, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_TOGGLE PORT_NAME("P4 Shift") PORT_PLAYER(4)
+	PORT_BIT( 0x0040, IP_ACTIVE_LOW, IPT_SERVICE4 )
+	PORT_BIT( 0x0080, IP_ACTIVE_LOW, IPT_UNUSED )
+
+	PORT_START("IN2")
+	PORT_BIT( 0x0001, IP_ACTIVE_LOW, IPT_START1 )
+	PORT_BIT( 0x0002, IP_ACTIVE_LOW, IPT_START2 )
+	PORT_BIT( 0x0004, IP_ACTIVE_LOW, IPT_START3 )
+	PORT_BIT( 0x0008, IP_ACTIVE_LOW, IPT_START4 )
+
+	PORT_START("HANDLE1")
+	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(1)
+
+	PORT_START("ACCEL1")
+	PORT_BIT( 0xff, 0x40, IPT_PEDAL ) PORT_MINMAX(0x40,0xFF) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)  PORT_PLAYER(1)
+
+	PORT_START("HANDLE2")
+	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(2)
+
+	PORT_START("ACCEL2")
+	PORT_BIT( 0xff, 0x40, IPT_PEDAL ) PORT_MINMAX(0x40,0xFF) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)  PORT_PLAYER(2)
+
+	PORT_START("HANDLE3")
+	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(3)
+
+	PORT_START("ACCEL3")
+	PORT_BIT( 0xff, 0x40, IPT_PEDAL ) PORT_MINMAX(0x40,0xFF) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)  PORT_PLAYER(3)
+
+	PORT_START("HANDLE4")
+	PORT_BIT( 0xff, 0x00, IPT_DIAL ) PORT_SENSITIVITY(25) PORT_KEYDELTA(10) PORT_REVERSE PORT_PLAYER(4)
+
+	PORT_START("ACCEL4")
+	PORT_BIT( 0xff, 0x40, IPT_PEDAL ) PORT_MINMAX(0x40,0xFF) PORT_SENSITIVITY(25) PORT_KEYDELTA(10)  PORT_PLAYER(4)
+
+INPUT_PORTS_END
+
+
+/*************************************
+ *
+ *  GFX decoding
+ *
+ *************************************/
+
+static const gfx_layout sprite_layout =
+{
+	16,16,    /* 16*16 characters */
+	1024,   /* 1024 characters */
+	4,      /* 4 bits per pixel */
+	{ 3*1024*16*16, 2*1024*16*16, 1024*16*16, 0 },
+	{ 0, 1, 2, 3, 4, 5, 6, 7,
+		8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7 },
+	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
+		16*8, 17*8, 18*8, 19*8, 20*8, 21*8, 22*8, 23*8 },
+	8*8*4 /* every char takes 32 consecutive bytes */
+};
+
+static const gfx_layout char_layout =
+{
+	8,8,    /* 8*8 characters */
+	2048,   /* 2048 characters */
+	4,      /* 4 bits per pixel */
+	{ 3*2048*8*8, 2*2048*8*8, 2048*8*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 /* every char takes 8 consecutive bytes */
+};
+
+
+static GFXDECODE_START( gfx_spdheat )
+	GFXDECODE_ENTRY( "gfx1", 0, char_layout, 256, 4 )
+	GFXDECODE_ENTRY( "gfx2", 0, sprite_layout, 0, 16 )
+GFXDECODE_END
+
+
+/*************************************
+ *
+ *  Machine driver
+ *
+ *************************************/
+
+void spdheat_state::spdheat(machine_config &config)
+{
+	/* basic machine hardware */
+	M68000(config, m_maincpu, XTAL(16'000'000)/2); // 8 MHz?
+	m_maincpu->set_addrmap(AS_PROGRAM, &spdheat_state::main_map);
+	m_maincpu->set_vblank_int("screen0", FUNC(spdheat_state::irq1_line_hold)); // What is IRQ7?
+
+	Z80(config, m_audiocpu, XTAL(8'000'000)/2); // 4 MHz?
+	m_audiocpu->set_addrmap(AS_PROGRAM, &spdheat_state::sound_map);
+	
+	Z80(config, m_subcpu, XTAL(8'000'000)/2); // 4 MHz?
+	m_subcpu->set_addrmap(AS_PROGRAM, &spdheat_state::sub_map);
+	m_subcpu->set_addrmap(AS_IO, &spdheat_state::sub_io_map);
+
+	config.m_minimum_quantum = attotime::from_hz(600);
+
+	/* video hardware */
+	GFXDECODE(config, m_gfxdecode, m_palette0, gfx_spdheat); // TODO?
+	PALETTE(config, m_palette0).set_format(palette_device::xBGR_555, 1024);
+	PALETTE(config, m_palette1).set_format(palette_device::xBGR_555, 1024);
+	PALETTE(config, m_palette2).set_format(palette_device::xBGR_555, 1024);
+	PALETTE(config, m_palette3).set_format(palette_device::xBGR_555, 1024);
+	config.set_default_layout(layout_spdheat);
+
+	screen_device &screen0(SCREEN(config, "screen0", SCREEN_TYPE_RASTER));
+	screen0.set_refresh_hz(60);
+	screen0.set_vblank_time(ATTOSECONDS_IN_USEC(0));
+	screen0.set_size(256, 256);
+	screen0.set_visarea(0, 256-1, 16, 256-16-1);
+	screen0.set_screen_update(FUNC(spdheat_state::screen_update<0>));
+	screen0.set_palette(m_palette0);
+
+	screen_device &screen1(SCREEN(config, "screen1", SCREEN_TYPE_RASTER));
+	screen1.set_refresh_hz(60);
+	screen1.set_vblank_time(ATTOSECONDS_IN_USEC(0));
+	screen1.set_size(256, 256);
+	screen1.set_visarea(0, 256-1, 16, 256-16-1);
+	screen1.set_screen_update(FUNC(spdheat_state::screen_update<1>));
+	screen1.set_palette(m_palette1);
+
+	screen_device &screen2(SCREEN(config, "screen2", SCREEN_TYPE_RASTER));
+	screen2.set_refresh_hz(60);
+	screen2.set_vblank_time(ATTOSECONDS_IN_USEC(0));
+	screen2.set_size(256, 256);
+	screen2.set_visarea(0, 256-1, 16, 256-16-1);
+	screen2.set_screen_update(FUNC(spdheat_state::screen_update<2>));
+	screen2.set_palette(m_palette2);
+
+	screen_device &screen3(SCREEN(config, "screen3", SCREEN_TYPE_RASTER));
+	screen3.set_refresh_hz(60);
+	screen3.set_vblank_time(ATTOSECONDS_IN_USEC(0));
+	screen3.set_size(256, 256);
+	screen3.set_visarea(0, 256-1, 16, 256-16-1);
+	screen3.set_screen_update(FUNC(spdheat_state::screen_update<3>));
+	screen3.set_palette(m_palette3);
+
+	/* sound hardware */
+	// TODO: there are multiple speakers
+	SPEAKER(config, "mono").front_center();
+	
+	INPUT_MERGER_ANY_HIGH(config, m_audio_irq).output_handler().set_inputline(m_audiocpu, INPUT_LINE_IRQ0);
+	
+	ym2203_device &ym1(YM2203(config, "ym1", XTAL(4'000'000)/2));
+	ym1.irq_handler().set(m_audio_irq, FUNC(input_merger_any_high_device::in_w<0>));
+	ym1.port_a_write_callback().set(FUNC(spdheat_state::ym1_port_a_w));
+	ym1.port_b_write_callback().set(FUNC(spdheat_state::ym1_port_b_w));
+	ym1.add_route(0, "mono", 0.3);
+	ym1.add_route(1, "mono", 0.3);
+	ym1.add_route(2, "mono", 0.3);
+	ym1.add_route(3, "mono", 0.3);
+	
+	ym2203_device &ym2(YM2203(config, "ym2", XTAL(4'000'000)/2));
+	ym2.irq_handler().set(m_audio_irq, FUNC(input_merger_any_high_device::in_w<1>));
+	ym2.port_a_write_callback().set(FUNC(spdheat_state::ym2_port_a_w));
+	ym2.port_b_write_callback().set(FUNC(spdheat_state::ym2_port_b_w));
+	ym2.add_route(0, "mono", 0.3);
+	ym2.add_route(1, "mono", 0.3);
+	ym2.add_route(2, "mono", 0.3);
+	ym2.add_route(3, "mono", 0.3);
+	
+	ym2149_device &ym3(YM2149(config, "ym3", XTAL(4'000'000)/2));
+	ym3.port_a_write_callback().set(FUNC(spdheat_state::ym3_port_a_w));
+	ym3.port_b_write_callback().set(FUNC(spdheat_state::ym3_port_b_w));
+	ym3.add_route(ALL_OUTPUTS, "mono", 0.3);
+
+	ym2149_device &ym4(YM2149(config, "ym4", XTAL(4'000'000)/2));
+	ym4.port_a_write_callback().set(FUNC(spdheat_state::ym4_port_a_w));
+	ym4.port_b_write_callback().set(FUNC(spdheat_state::ym4_port_b_w));
+	ym4.add_route(ALL_OUTPUTS, "mono", 0.3);
+	
+	DAC_8BIT_R2R(config, m_dac, 0).add_route(ALL_OUTPUTS, "mono", 0.3);
+	voltage_regulator_device &vref(VOLTAGE_REGULATOR(config, "vref"));
+	vref.add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT);
+	vref.add_route(0, "dac", -1.0, DAC_VREF_NEG_INPUT);
+}
+
+
+/*************************************
+ *
+ *  ROM definitions
+ *
+ *************************************/
+
+ROM_START( spdheat ) // TODO: Find correct labelling
+	ROM_REGION( 0x30000, "maincpu", 0 )
+	ROM_LOAD16_BYTE( "4-1-ic37.cpu", 0x00000, 0x08000, CRC(bb1dd6b2) SHA1(f0d45f82e643fbc5cf6ec75fd8d7ae4c4b7d8b23) )
+	ROM_LOAD16_BYTE( "1-1-ic26.cpu", 0x00001, 0x08000, CRC(7ee12547) SHA1(79395cc622a315c3b3c3000224e150311da8073d) )
+	ROM_LOAD16_BYTE( "5-1-ic36.cpu", 0x10000, 0x08000, CRC(b396ef0b) SHA1(7a7f59faf4478c417f0928b22fb81462cb2628c2) )
+	ROM_LOAD16_BYTE( "2-1-ic25.cpu", 0x10001, 0x08000, CRC(4b76870a) SHA1(6bc1a594e37e2e3f2f0b4f23ba9bd7c87c3a27d9) )
+	ROM_LOAD16_BYTE( "6-ic34.cpu",   0x20000, 0x08000, CRC(900ecd44) SHA1(352b196bfe3b61cfbcdde72a03d3064be05be41e) )
+	ROM_LOAD16_BYTE( "3-ic23.cpu",   0x20001, 0x08000, CRC(6a5d2fe5) SHA1(595cc6028dbd0ceaf519b9a5eddfeffa74e2d27c) )
+
+	ROM_REGION( 0x10000, "audiocpu", 0 )
+	ROM_LOAD( "ic11.snd", 0x00000, 0x08000, CRC(43c2318f) SHA1(472e9cc68bb8ff3c5c3d4ec475491ad1a97261e7) )
+
+	ROM_REGION( 0x10000, "subcpu", 0 )
+	ROM_LOAD( "ic5.snd", 0x00000, 0x08000, CRC(c43b85ee) SHA1(7d7ed6b5f3e48a38b3e387f2dbc2f2bb0662db94) )
+	ROM_LOAD( "ic6.snd", 0x08000, 0x08000, CRC(8f45edbd) SHA1(29a696691bd199b6fff0fe0e9fd9241cec9f3fbe) )
+
+	ROM_REGION( 0x10000, "gfx1", 0 )
+	ROM_LOAD( "7-ic6.vid",    0x00000, 0x04000, CRC(cf85d3a0) SHA1(8ad330fd33b94b7bc0eb49edc4e5eafd2df54010) )
+	ROM_LOAD( "8-ic5.vid",    0x04000, 0x04000, CRC(9ce4214d) SHA1(ea461d00af87bb0618604a02bd72338bcfb31f5b) )
+	ROM_LOAD( "9-ic22.vid",   0x08000, 0x04000, CRC(00d7fba1) SHA1(ff0418856f469aa0b570c7a9c9af6cd3442e9b97) )
+	ROM_LOAD( "10-ic21.vid",  0x0c000, 0x04000, CRC(743a04c5) SHA1(b878f4cdf1585eedddb8d18453474996a10b0804) )
+
+	ROM_REGION( 0x20000, "gfx2", 0 )
+	ROM_LOAD( "11-ic55.vid",  0x00000, 0x08000, CRC(db979542) SHA1(a857e2ad12b07ccedd4453819fcb8f946893eedf) )
+	ROM_LOAD( "12-ic53.vid",  0x08000, 0x08000, CRC(3d8211c2) SHA1(587caaf5775001a9aa2f266b3d084bd93fa0d575) )
+	ROM_LOAD( "13-ic52.vid",  0x10000, 0x08000, CRC(38085e40) SHA1(5e4d6f9ce39a95bdddf5b2f4504fe3c34b5a8585) )
+	ROM_LOAD( "14-ic36.vid",  0x18000, 0x08000, CRC(31c38779) SHA1(42ce3441a540644d17f27e84f8c5693cbee3e9f1) )
+ROM_END
+
+
+/*************************************
+ *
+ *  Game drivers
+ *
+ *************************************/
+
+GAME( 1985, spdheat, 0, spdheat,  spdheat,  spdheat_state, empty_init, ROT0, "Taito Corporation", "Super Dead Heat", 0 )
diff --git a/src/mame/includes/spdheat.h b/src/mame/includes/spdheat.h
new file mode 100644
index 00000000000..5c6a752f399
--- /dev/null
+++ b/src/mame/includes/spdheat.h
@@ -0,0 +1,104 @@
+// license:BSD-3-Clause
+// copyright-holders:Philip Bennett
+/*************************************************************************
+
+    Super Dead Heat hardware
+
+*************************************************************************/
+#ifndef MAME_INCLUDES_SPDHEAT_H
+#define MAME_INCLUDES_SPDHEAT_H
+
+#pragma once
+
+#include "emupal.h"
+#include "screen.h"
+#include "tilemap.h"
+#include "machine/input_merger.h"
+#include "sound/dac.h"
+
+
+/*************************************
+ *
+ *  Machine class
+ *
+ *************************************/
+
+class spdheat_state : public driver_device
+{
+public:
+	spdheat_state(const machine_config &mconfig, device_type type, const char *tag) :
+	driver_device(mconfig, type, tag),
+	m_maincpu(*this, "maincpu"),
+	m_subcpu(*this, "subcpu"),
+	m_audiocpu(*this, "audiocpu"),
+	m_audio_irq(*this, "audio_irq"),
+	m_fg_ram(*this, "fg_ram%u", 0U),
+	m_spriteram(*this, "spriteram"),
+	m_gfxdecode(*this, "gfxdecode"),
+	m_palette0(*this, "palette0"),
+	m_palette1(*this, "palette1"),
+	m_palette2(*this, "palette2"),
+	m_palette3(*this, "palette3"),
+	m_dac(*this, "dac")
+	{ }
+	
+	void spdheat(machine_config &config);
+	
+protected:
+	virtual void machine_start() override;
+	virtual void machine_reset() override;
+	virtual void video_start() override;
+	
+private:
+	required_device<cpu_device> m_maincpu;
+	required_device<cpu_device> m_subcpu;
+	required_device<cpu_device> m_audiocpu;
+	required_device<input_merger_any_high_device> m_audio_irq;
+	required_shared_ptr_array<uint16_t, 4> m_fg_ram;
+	required_shared_ptr<uint16_t> m_spriteram;
+	tilemap_t *m_fg_tilemap[4];
+	
+	required_device<gfxdecode_device> m_gfxdecode;
+	required_device<palette_device> m_palette0;
+	required_device<palette_device> m_palette1;
+	required_device<palette_device> m_palette2;
+	required_device<palette_device> m_palette3;
+	required_device<dac_byte_interface> m_dac;
+	
+	uint32_t m_sound_data[4];
+	uint32_t m_sound_status;
+	uint32_t m_sub_data;
+	uint32_t m_sub_status;
+	
+	void main_map(address_map &map);
+	void sub_map(address_map &map);
+	void sub_io_map(address_map &map);
+	void sound_map(address_map &map);
+	
+	DECLARE_READ8_MEMBER(sub_r);
+	DECLARE_WRITE8_MEMBER(sub_dac_w);
+	DECLARE_WRITE8_MEMBER(sub_nmi_w);
+	DECLARE_WRITE8_MEMBER(sub_status_w);
+	DECLARE_READ8_MEMBER(sub_snd_r);
+	DECLARE_READ8_MEMBER(soundstatus_r);
+	template<int screen> DECLARE_READ8_MEMBER(soundcpu_r);
+	DECLARE_READ8_MEMBER(sub_status_r);
+	DECLARE_READ16_MEMBER(sound_status_r);
+	template<int screen> DECLARE_WRITE16_MEMBER(sound_w);
+	template<int screen> DECLARE_READ8_MEMBER(sndcpu_sound_r);
+	DECLARE_WRITE8_MEMBER(ym1_port_a_w);
+	DECLARE_WRITE8_MEMBER(ym1_port_b_w);
+	DECLARE_WRITE8_MEMBER(ym2_port_a_w);
+	DECLARE_WRITE8_MEMBER(ym2_port_b_w);
+	DECLARE_WRITE8_MEMBER(ym3_port_a_w);
+	DECLARE_WRITE8_MEMBER(ym3_port_b_w);
+	DECLARE_WRITE8_MEMBER(ym4_port_a_w);
+	DECLARE_WRITE8_MEMBER(ym4_port_b_w);
+	
+	template<int screen> DECLARE_WRITE16_MEMBER(text_w);
+	template<int screen> TILE_GET_INFO_MEMBER(get_fg_tile_info);
+	void draw_sprites(bitmap_ind16 &bitmap, const rectangle &cliprect, uint32_t xo, uint32_t yo);
+	template<int which> uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+};
+
+#endif // MAME_INCLUDES_SPDHEAT_H
diff --git a/src/mame/layout/spdheat.lay b/src/mame/layout/spdheat.lay
new file mode 100644
index 00000000000..7668e667f04
--- /dev/null
+++ b/src/mame/layout/spdheat.lay
@@ -0,0 +1,17 @@
+<?xml version="1.0"?>
+<mamelayout version="2">
+	<view name="Quadruple">
+		<screen index="0">
+			<bounds x="0" y="3.25" width="4" height="3" />
+		</screen>
+		<screen index="1">
+			<bounds x="4.25" y="3.25" width="4" height="3" />
+		</screen>
+		<screen index="2">
+			<bounds x="0" y="0" width="4" height="3" />
+		</screen>
+		<screen index="3">
+			<bounds x="4.25" y="0" width="4" height="3" />
+		</screen>
+	</view>
+</mamelayout>
diff --git a/src/mame/mame.lst b/src/mame/mame.lst
index 29e1f1f0745..3f94f268fc1 100644
--- a/src/mame/mame.lst
+++ b/src/mame/mame.lst
@@ -36362,6 +36362,9 @@ meteors                         // (c) 1981 Amusement World
 spcforc2                        // bootleg
 spcforce                        // (c) 1980 Venture Line
 
+@source:spdheat.cpp
+spdheat                         // (c) 1985 Taito
+
 @source:spdodgeb.cpp
 nkdodge                         // TA-0022 (c) 1987 (Japan)
 nkdodgeb                        // TA-0022 (c) 1987 (Japan)