diff --git a/src/mame/drivers/sprcros2.cpp b/src/mame/drivers/sprcros2.cpp
index 040b508ee5c..9ec331bcfe7 100644
--- a/src/mame/drivers/sprcros2.cpp
+++ b/src/mame/drivers/sprcros2.cpp
@@ -1,9 +1,15 @@
 // license:BSD-3-Clause
-// copyright-holders:David Haywood
+// copyright-holders:Angelo Salese
+/***************************************************************************
 
-// **** SKELETON DRIVER **** original removed due to unresolved licensing.
+TODO:
+- complete rewrite;
+- scanline renderer;
+- understand irq 0 source;
+- output bit 0 might be watchdog armed bit/sprite start DMA instead of irq enable;
+
+===================================
 
-/*
 Super Cross II (JPN Ver.)
 (c)1986 GM Shoji
 
@@ -39,47 +45,445 @@ SCM-23.5B
 SC-60.4K
 SC-61.5A
 
-*/
+***************************************************************************/
 
 #include "emu.h"
+#include "cpu/z80/z80.h"
+#include "sound/sn76496.h"
+
+#define MAIN_CLOCK XTAL_10MHz
 
 class sprcros2_state : public driver_device
 {
 public:
 	sprcros2_state(const machine_config &mconfig, device_type type, const char *tag)
-		: driver_device(mconfig, type, tag)
+		: driver_device(mconfig, type, tag),
+			m_master_cpu(*this, "master_cpu"),
+			m_slave_cpu(*this, "slave_cpu"),
+			m_gfxdecode(*this, "gfxdecode"),
+			m_fgvram(*this, "fgvram"),
+			m_fgattr(*this, "fgattr"),
+			m_bgvram(*this, "bgvram"),
+			m_bgattr(*this, "bgattr"),
+			m_sprram(*this, "sprram")
 	{ }
 
+	// devices
+	required_device<cpu_device> m_master_cpu;
+	required_device<cpu_device> m_slave_cpu;
+	required_device<gfxdecode_device> m_gfxdecode;
+
+	required_shared_ptr<UINT8> m_fgvram;
+	required_shared_ptr<UINT8> m_fgattr;
+	required_shared_ptr<UINT8> m_bgvram;
+	required_shared_ptr<UINT8> m_bgattr;
+	required_shared_ptr<UINT8> m_sprram;
+
+	
+	// screen updates
+	UINT32 screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
+	DECLARE_PALETTE_INIT(sprcros2);
+	DECLARE_WRITE8_MEMBER(master_output_w);
+	DECLARE_WRITE8_MEMBER(slave_output_w);
+	DECLARE_WRITE8_MEMBER(bg_scrollx_w);
+	DECLARE_WRITE8_MEMBER(bg_scrolly_w);
+	INTERRUPT_GEN_MEMBER(master_vblank_irq);
+	INTERRUPT_GEN_MEMBER(slave_vblank_irq);
+	TIMER_DEVICE_CALLBACK_MEMBER(master_scanline);
+
+	bool m_master_nmi_enable;
+	bool m_master_irq_enable;
+	bool m_slave_nmi_enable;
+	UINT8 m_bg_scrollx, m_bg_scrolly;
+protected:
+	// driver_device overrides
+	virtual void machine_start();
+	virtual void machine_reset();
+
+	virtual void video_start();
+	
+	
 };
 
+void sprcros2_state::video_start()
+{
+}
+
+UINT32 sprcros2_state::screen_update( screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect )
+{
+	gfx_element *gfx_0 = m_gfxdecode->gfx(0);
+	gfx_element *gfx_1 = m_gfxdecode->gfx(1);
+	gfx_element *gfx_2 = m_gfxdecode->gfx(2);
+	int y,x;
+	int count = 0;
+
+	for (y=0;y<32;y++)
+	{
+		for (x=0;x<32;x++)
+		{
+			UINT16 tile = m_bgvram[count];
+			tile |= (m_bgattr[count] & 7) << 8;
+			bool flipx = bool(m_bgattr[count] & 0x08);
+			UINT8 color = (m_bgattr[count] & 0xf0) >> 4;
+			
+			gfx_0->opaque(bitmap,cliprect,tile,color,flipx,0,x*8-m_bg_scrollx,y*8-m_bg_scrolly);
+			gfx_0->opaque(bitmap,cliprect,tile,color,flipx,0,x*8+256-m_bg_scrollx,y*8-m_bg_scrolly);
+			gfx_0->opaque(bitmap,cliprect,tile,color,flipx,0,x*8-m_bg_scrollx,y*8+256-m_bg_scrolly);
+			gfx_0->opaque(bitmap,cliprect,tile,color,flipx,0,x*8+256-m_bg_scrollx,y*8+256-m_bg_scrolly);
+
+			count++;
+		}
+	}
+	
+	for(count=0x40-4;count>-1;count-=4)
+	{
+		UINT8 x,y,tile,color;
+		bool flipx;
+		
+		y = m_sprram[count+2];
+		x = m_sprram[count+3];
+		tile = m_sprram[count+0];
+		flipx = bool(m_sprram[count+1] & 2);
+		color = (m_sprram[count+1] & 0x38) >> 3;
+		gfx_1->transpen(bitmap,cliprect,tile,color,flipx,0,x,y,0);
+	}
+	
+	
+	count = 0;
+	
+	//gfx = m_gfxdecode->gfx(2);
+
+	for (y=0;y<32;y++)
+	{
+		for (x=0;x<32;x++)
+		{
+			UINT16 tile = m_fgvram[count];
+			tile |= (m_fgattr[count] & 3) << 8;
+			UINT8 color = (m_fgattr[count] & 0xfc) >> 2;
+			
+			gfx_2->transpen(bitmap,cliprect,tile,color,0,0,x*8,y*8,0);
+
+			count++;
+		}
+	}
+	
+	
+	return 0;
+}
+
+WRITE8_MEMBER(sprcros2_state::master_output_w)
+{
+	popmessage("%02x",data);
+	if(data & 0xbe)
+		printf("master 07 -> %02x\n",data);
+
+	membank("master_rombank")->set_entry((data&0x40)>>6);
+	m_master_nmi_enable = bool(data & 1);
+	m_master_irq_enable = bool(data & 8);
+//	if(data & 0x80)
+//		m_master_cpu->set_input_line(0,HOLD_LINE);
+}
+
+WRITE8_MEMBER(sprcros2_state::slave_output_w)
+{
+	if(data & 0xf6)
+		printf("slave 03 -> %02x\n",data);
+	
+	m_slave_nmi_enable = bool(data & 1);
+	membank("slave_rombank")->set_entry((data&8)>>3);
+}
+
+WRITE8_MEMBER(sprcros2_state::bg_scrollx_w)
+{
+	m_bg_scrollx = data;
+}
+
+WRITE8_MEMBER(sprcros2_state::bg_scrolly_w)
+{
+	m_bg_scrolly = data;
+}
+
+static ADDRESS_MAP_START( master_map, AS_PROGRAM, 8, sprcros2_state )
+	AM_RANGE(0x0000, 0xbfff) AM_ROM AM_REGION("master", 0)
+	AM_RANGE(0xc000, 0xdfff) AM_ROMBANK("master_rombank")
+	AM_RANGE(0xe000, 0xe3ff) AM_RAM AM_SHARE("fgvram")
+	AM_RANGE(0xe400, 0xe7ff) AM_RAM AM_SHARE("fgattr")
+	AM_RANGE(0xe800, 0xe83f) AM_RAM AM_SHARE("sprram")
+	AM_RANGE(0xe840, 0xf7ff) AM_RAM
+	AM_RANGE(0xf800, 0xffff) AM_RAM AM_SHARE("shared_ram")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( master_io, AS_IO, 8, sprcros2_state )
+	ADDRESS_MAP_GLOBAL_MASK(0xff)
+	AM_RANGE(0x00, 0x00) AM_READ_PORT("P1") AM_DEVWRITE("sn1", sn76489_device, write)
+	AM_RANGE(0x01, 0x01) AM_READ_PORT("P2") AM_DEVWRITE("sn2", sn76489_device, write)
+	AM_RANGE(0x02, 0x02) AM_READ_PORT("EXTRA") AM_DEVWRITE("sn3", sn76489_device, write)
+	AM_RANGE(0x04, 0x04) AM_READ_PORT("DSW1")
+	AM_RANGE(0x05, 0x05) AM_READ_PORT("DSW2")
+	AM_RANGE(0x07, 0x07) AM_WRITE(master_output_w)
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( slave_map, AS_PROGRAM, 8, sprcros2_state )
+	AM_RANGE(0x0000, 0xbfff) AM_ROM AM_REGION("slave", 0)
+	AM_RANGE(0xc000, 0xdfff) AM_ROMBANK("slave_rombank")
+	AM_RANGE(0xe000, 0xe3ff) AM_RAM AM_SHARE("bgvram")
+	AM_RANGE(0xe400, 0xe7ff) AM_RAM AM_SHARE("bgattr")
+	AM_RANGE(0xe800, 0xf7ff) AM_RAM
+	AM_RANGE(0xf800, 0xffff) AM_RAM AM_SHARE("shared_ram")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( slave_io, AS_IO, 8, sprcros2_state )
+	ADDRESS_MAP_GLOBAL_MASK(0xff)
+	AM_RANGE(0x00, 0x00) AM_WRITE(bg_scrollx_w)
+	AM_RANGE(0x01, 0x01) AM_WRITE(bg_scrolly_w)
+	AM_RANGE(0x03, 0x03) AM_WRITE(slave_output_w)
+ADDRESS_MAP_END
 
 static INPUT_PORTS_START( sprcros2 )
+	PORT_START("P1")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_COIN1 )
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_COIN2 )
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("P2")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_START1 )
+	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 )
+	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("EXTRA")
+	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 )
+	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
+	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN3 )
+	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON2 )
+	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_COCKTAIL
+	PORT_BIT( 0xc0, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("DSW1")
+	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coinage ) )
+	PORT_DIPSETTING(    0x07, DEF_STR( 3C_1C ) )
+	PORT_DIPSETTING(    0x06, DEF_STR( 2C_1C ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
+	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
+	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
+	PORT_DIPSETTING(    0x03, DEF_STR( 1C_4C ) )
+	PORT_DIPSETTING(    0x04, DEF_STR( 1C_5C ) )
+	PORT_DIPSETTING(    0x05, DEF_STR( 1C_6C ) )
+	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+	PORT_START("DSW2")
+	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Cabinet ) )
+	PORT_DIPSETTING(    0x01, DEF_STR( Upright ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
+	PORT_BIT( 0x0e, IP_ACTIVE_HIGH, IPT_UNUSED )
+	PORT_BIT( 0x70, IP_ACTIVE_HIGH, IPT_UNUSED )            //unused coinage bits
+	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Flip_Screen ) )
+	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
+	PORT_DIPSETTING(    0x80, DEF_STR( On ) )
 INPUT_PORTS_END
 
+static const gfx_layout sprite_layout =
+{
+	32,32,
+	RGN_FRAC(1,3),
+	3,
+	{ RGN_FRAC(0,3), RGN_FRAC(1,3), RGN_FRAC(2,3) },
+	{ STEP8(0,1), STEP8(256,1), STEP8(512,1), STEP8(768,1) },
+	{ STEP16(0,8), STEP16(128,8) },
+	32*32
+};
+
+static const gfx_layout fg_layout =
+{
+	8,8,
+	RGN_FRAC(1,1),
+	2,
+	{ 0, 4 },
+	{ STEP4(64,1), STEP4(0,1) },
+	{ STEP8(0,8) },
+	8*8*2
+};
+
+static GFXDECODE_START( sprcros2 )
+	GFXDECODE_ENTRY( "gfx1", 0, gfx_8x8x3_planar, 0,   16 )
+	GFXDECODE_ENTRY( "gfx2", 0, sprite_layout, 256, 32 )
+	GFXDECODE_ENTRY( "gfx3", 0, fg_layout,     512, 64 )
+GFXDECODE_END
+
+
+
+void sprcros2_state::machine_start()
+{
+	membank("master_rombank")->configure_entries(0, 2, memregion("master_bank")->base(), 0x2000);
+	membank("slave_rombank")->configure_entries(0, 2, memregion("slave_bank")->base(), 0x2000);
+
+}
+
+void sprcros2_state::machine_reset()
+{
+	m_master_nmi_enable = false;
+	m_slave_nmi_enable = false;
+}
+
+
+PALETTE_INIT_MEMBER(sprcros2_state, sprcros2)
+{
+	const UINT8 *color_prom = memregion("proms")->base();
+	int i;
+
+	/* create a lookup table for the palette */
+	for (i = 0; i < 0x20; i++)
+	{
+		int bit0, bit1, bit2;
+		int r, g, b;
+
+		/* red component */
+		bit0 = (color_prom[i] >> 0) & 0x01;
+		bit1 = (color_prom[i] >> 1) & 0x01;
+		bit2 = (color_prom[i] >> 2) & 0x01;
+		r = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+		/* green component */
+		bit0 = (color_prom[i] >> 3) & 0x01;
+		bit1 = (color_prom[i] >> 4) & 0x01;
+		bit2 = (color_prom[i] >> 5) & 0x01;
+		g = 0x21 * bit0 + 0x47 * bit1 + 0x97 * bit2;
+
+		/* blue component */
+		bit0 = (color_prom[i] >> 6) & 0x01;
+		bit1 = (color_prom[i] >> 7) & 0x01;
+		b = 0x47 * bit0 + 0xb8 * bit1;
+		palette.set_pen_color(i,rgb_t(r,g,b));
+
+		palette.set_indirect_color(i, rgb_t(r, g, b));
+	}
+
+	/* color_prom now points to the beginning of the lookup table */
+	color_prom += 0x20;
+
+	/* bg */
+	for (i = 0; i < 0x100; i++)
+	{
+		UINT8 ctabentry = (color_prom[i] & 0x0f) | ((color_prom[i + 0x100] & 0x0f) << 4);
+		palette.set_pen_indirect(i, ctabentry);
+	}
+
+	/* sprites & fg */
+	for (i = 0x100; i < 0x300; i++)
+	{
+		UINT8 ctabentry = color_prom[i + 0x100];
+		palette.set_pen_indirect(i, ctabentry);
+	}
+}
+
+INTERRUPT_GEN_MEMBER(sprcros2_state::master_vblank_irq)
+{
+	if(m_master_nmi_enable == true)
+		device.execute().set_input_line(INPUT_LINE_NMI, PULSE_LINE);
+}
+
+INTERRUPT_GEN_MEMBER(sprcros2_state::slave_vblank_irq)
+{
+	if(m_slave_nmi_enable == true)
+		device.execute().set_input_line(INPUT_LINE_NMI, PULSE_LINE);
+}
+
+TIMER_DEVICE_CALLBACK_MEMBER(sprcros2_state::master_scanline)
+{
+	int scanline = param;
+
+
+	if(scanline == 0 && m_master_irq_enable == true)
+		m_master_cpu->set_input_line(0, HOLD_LINE);
+}
 
 static MACHINE_CONFIG_START( sprcros2, sprcros2_state )
+
+	/* basic machine hardware */
+	MCFG_CPU_ADD("master_cpu",Z80,MAIN_CLOCK/4)
+	MCFG_CPU_PROGRAM_MAP(master_map)
+	MCFG_CPU_IO_MAP(master_io)
+	MCFG_CPU_VBLANK_INT_DRIVER("screen", sprcros2_state,  master_vblank_irq)
+	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", sprcros2_state, master_scanline, "screen", 0, 1)
+
+	MCFG_CPU_ADD("slave_cpu",Z80,MAIN_CLOCK/4)
+	MCFG_CPU_PROGRAM_MAP(slave_map)
+	MCFG_CPU_IO_MAP(slave_io)
+	MCFG_CPU_VBLANK_INT_DRIVER("screen", sprcros2_state,  slave_vblank_irq)
+	
+	MCFG_QUANTUM_PERFECT_CPU("master_cpu")
+
+	/* video hardware */
+	MCFG_SCREEN_ADD("screen", RASTER)
+	MCFG_SCREEN_UPDATE_DRIVER(sprcros2_state, screen_update)
+	MCFG_SCREEN_REFRESH_RATE(60)
+	MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
+	MCFG_SCREEN_SIZE(32*8, 32*8)
+	MCFG_SCREEN_VISIBLE_AREA(1*8, 31*8-1, 2*8, 30*8-1)
+//	MCFG_SCREEN_RAW_PARAMS(MAIN_CLOCK/2, 343, 0, 256, 262, 0, 256) // TODO: Wrong screen parameters
+	MCFG_SCREEN_PALETTE("palette")
+
+	MCFG_GFXDECODE_ADD("gfxdecode", "palette", sprcros2)
+
+	MCFG_PALETTE_ADD("palette", 768)
+	MCFG_PALETTE_INDIRECT_ENTRIES(32)
+	MCFG_PALETTE_INIT_OWNER(sprcros2_state, sprcros2)
+
+	/* sound hardware */
+	MCFG_SPEAKER_STANDARD_MONO("mono")
+	MCFG_SOUND_ADD("sn1", SN76489, 10000000/4)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+
+	MCFG_SOUND_ADD("sn2", SN76489, 10000000/4)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+
+	MCFG_SOUND_ADD("sn3", SN76489, 10000000/4)
+	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
 MACHINE_CONFIG_END
 
+
+/***************************************************************************
+
+  Machine driver(s)
+
+***************************************************************************/
+
+
+
 ROM_START( sprcros2 )
-	ROM_REGION( 0x14000, "master", 0 )
+	ROM_REGION( 0x0c000, "master", 0 )
 	ROM_LOAD( "scm-03.10g", 0x00000, 0x4000, CRC(b9757908) SHA1(d59cb2aac1b6268fc766306850f5711d4a12d897) )
 	ROM_LOAD( "scm-02.10j", 0x04000, 0x4000, CRC(849c5c87) SHA1(0e02c4990e371d6a290efa53301818e769648945) )
 	ROM_LOAD( "scm-01.10k", 0x08000, 0x4000, CRC(385a62de) SHA1(847bf9d97ab3fa8949d9198e4e509948a940d6aa) )
-	ROM_LOAD( "scm-00.10l", 0x10000, 0x4000, CRC(13fa3684) SHA1(611b7a237e394f285dcc5beb027dacdbdd58a7a0) )
+	
+	ROM_REGION( 0x4000, "master_bank", 0)
+	ROM_LOAD( "scm-00.10l", 0x00000, 0x4000, CRC(13fa3684) SHA1(611b7a237e394f285dcc5beb027dacdbdd58a7a0) )
 
-	ROM_REGION( 0x14000, "slave", 0 )
+	ROM_REGION( 0xc000, "slave", 0 )
 	ROM_LOAD( "scs-30.5f",  0x00000, 0x4000, CRC(c0a40e41) SHA1(e74131b353855749258dffa45091c825ccdbf05a) )
 	ROM_LOAD( "scs-29.5h",  0x04000, 0x4000, CRC(83d49fa5) SHA1(7112110df2f382bbc0e651adcec975054a485b9b) )
 	ROM_LOAD( "scs-28.5j",  0x08000, 0x4000, CRC(480d351f) SHA1(d1b86f441ae0e58b30e0f089ab25de219d5f30e3) )
-	ROM_LOAD( "scs-27.5k",  0x10000, 0x4000, CRC(2cf720cb) SHA1(a95c5b8c88371cf597bb7d80afeca6a48c7b74e6) )
+
+	ROM_REGION( 0x4000, "slave_bank", 0)
+	ROM_LOAD( "scs-27.5k",  0x00000, 0x4000, CRC(2cf720cb) SHA1(a95c5b8c88371cf597bb7d80afeca6a48c7b74e6) )
 
 	ROM_REGION( 0xc000, "gfx1", 0 ) //bg
-	ROM_LOAD( "scs-26.4b",   0x0000, 0x4000, CRC(f958b56d) SHA1(a1973179d336d2ba57294155550515f2b8a33a09) )
+	ROM_LOAD( "scs-26.4b",   0x8000, 0x4000, CRC(f958b56d) SHA1(a1973179d336d2ba57294155550515f2b8a33a09) )
 	ROM_LOAD( "scs-25.4c",   0x4000, 0x4000, CRC(d6fd7ba5) SHA1(1c26c4c1655b2be9cb6103e75386cc2f0cf27fc5) )
-	ROM_LOAD( "scs-24.4e",   0x8000, 0x4000, CRC(87783c36) SHA1(7102be795afcddd76b4d41823e95c65fe1ffbca0) )
+	ROM_LOAD( "scs-24.4e",   0x0000, 0x4000, CRC(87783c36) SHA1(7102be795afcddd76b4d41823e95c65fe1ffbca0) )
 
 	ROM_REGION( 0xc000, "gfx2", 0 )
-	ROM_LOAD( "scm-23.5b",   0x0000, 0x4000, CRC(ab42f8e3) SHA1(8c2213b7c47a48e223fc3f7d323d16c0e4cd0457) )
+	ROM_LOAD( "scm-23.5b",   0x0000, 0x4000, CRC(ab42f8e3) SHA1(8c2213b7c47a48e223fc3f7d323d16c0e4cd0457) ) //sprites
 	ROM_LOAD( "scm-22.5e",   0x4000, 0x4000, CRC(0cad254c) SHA1(36e30e30b652b3a388a3c4a82251196f79368f59) )
 	ROM_LOAD( "scm-21.5g",   0x8000, 0x4000, CRC(b6b68998) SHA1(cc3c6d996beeedcc7e5199f10d65c5b1d3c6e666) )
 
@@ -87,33 +491,37 @@ ROM_START( sprcros2 )
 	ROM_LOAD( "scm-20.5k",   0x0000, 0x4000, CRC(67a099a6) SHA1(43981abdcaa0ff36183027a3c691ce2df7f06ec7) )
 
 	ROM_REGION( 0x0420, "proms", 0 )
-	ROM_LOAD( "sc-64.6a",    0x0000, 0x0020, CRC(336dd1c0) SHA1(f0a0d2c13617fd84ee55c0cb96643761a8735147) )
-	ROM_LOAD( "sc-63.3b",    0x0020, 0x0100, CRC(9034a059) SHA1(1801965b4f0f3e04ca4b3faf0ba3a27dbb008474) )
-	ROM_LOAD( "sc-62.3a",    0x0120, 0x0100, CRC(3c78a14f) SHA1(8f9c196a3e18bdce2d4855bc285bd5bde534bf09) )
-	ROM_LOAD( "sc-61.5a",    0x0220, 0x0100, CRC(2f71185d) SHA1(974fbb52285f01f4353e9acb1992dcd6fdefedcb) )
-	ROM_LOAD( "sc-60.4k",    0x0320, 0x0100, CRC(d7a4e57d) SHA1(6db02ec6aa55b05422cb505e63c71e36b4b11b4a) )
+	ROM_LOAD( "sc-64.6a",    0x0000, 0x0020, CRC(336dd1c0) SHA1(f0a0d2c13617fd84ee55c0cb96643761a8735147) ) //palette
+	ROM_LOAD( "sc-63.3b",    0x0020, 0x0100, CRC(9034a059) SHA1(1801965b4f0f3e04ca4b3faf0ba3a27dbb008474) ) //bg clut lo nibble
+	ROM_LOAD( "sc-62.3a",    0x0120, 0x0100, CRC(3c78a14f) SHA1(8f9c196a3e18bdce2d4855bc285bd5bde534bf09) ) //bg clut hi nibble
+	ROM_LOAD( "sc-61.5a",    0x0220, 0x0100, CRC(2f71185d) SHA1(974fbb52285f01f4353e9acb1992dcd6fdefedcb) ) //sprite clut
+	ROM_LOAD( "sc-60.4k",    0x0320, 0x0100, CRC(d7a4e57d) SHA1(6db02ec6aa55b05422cb505e63c71e36b4b11b4a) ) //fg clut
 ROM_END
 
 ROM_START( sprcros2a )
-	ROM_REGION( 0x14000, "master", 0 )
+	ROM_REGION( 0xc000, "master", 0 )
 	ROM_LOAD( "15.bin",     0x00000, 0x4000, CRC(b9d02558) SHA1(775404c6c7648d9dab02b496541739ea700cd481) )
 	ROM_LOAD( "scm-02.10j", 0x04000, 0x4000, CRC(849c5c87) SHA1(0e02c4990e371d6a290efa53301818e769648945) )
 	ROM_LOAD( "scm-01.10k", 0x08000, 0x4000, CRC(385a62de) SHA1(847bf9d97ab3fa8949d9198e4e509948a940d6aa) )
-	ROM_LOAD( "scm-00.10l", 0x10000, 0x4000, CRC(13fa3684) SHA1(611b7a237e394f285dcc5beb027dacdbdd58a7a0) )
 
-	ROM_REGION( 0x14000, "slave", 0 )
+	ROM_REGION( 0x4000, "master_bank", 0)
+	ROM_LOAD( "scm-00.10l", 0x00000, 0x4000, CRC(13fa3684) SHA1(611b7a237e394f285dcc5beb027dacdbdd58a7a0) ) 
+	
+	ROM_REGION( 0xc000, "slave", 0 )
 	ROM_LOAD( "scs-30.5f",  0x00000, 0x4000, CRC(c0a40e41) SHA1(e74131b353855749258dffa45091c825ccdbf05a) )
 	ROM_LOAD( "scs-29.5h",  0x04000, 0x4000, CRC(83d49fa5) SHA1(7112110df2f382bbc0e651adcec975054a485b9b) )
 	ROM_LOAD( "scs-28.5j",  0x08000, 0x4000, CRC(480d351f) SHA1(d1b86f441ae0e58b30e0f089ab25de219d5f30e3) )
-	ROM_LOAD( "scs-27.5k",  0x10000, 0x4000, CRC(2cf720cb) SHA1(a95c5b8c88371cf597bb7d80afeca6a48c7b74e6) )
+	
+	ROM_REGION( 0x4000, "slave_bank", 0)
+	ROM_LOAD( "scs-27.5k",  0x00000, 0x4000, CRC(2cf720cb) SHA1(a95c5b8c88371cf597bb7d80afeca6a48c7b74e6) ) //banked into c000-dfff
 
 	ROM_REGION( 0xc000, "gfx1", 0 ) //bg
-	ROM_LOAD( "scs-26.4b",   0x0000, 0x4000, CRC(f958b56d) SHA1(a1973179d336d2ba57294155550515f2b8a33a09) )
+	ROM_LOAD( "scs-26.4b",   0x8000, 0x4000, CRC(f958b56d) SHA1(a1973179d336d2ba57294155550515f2b8a33a09) )
 	ROM_LOAD( "scs-25.4c",   0x4000, 0x4000, CRC(d6fd7ba5) SHA1(1c26c4c1655b2be9cb6103e75386cc2f0cf27fc5) )
-	ROM_LOAD( "scs-24.4e",   0x8000, 0x4000, CRC(87783c36) SHA1(7102be795afcddd76b4d41823e95c65fe1ffbca0) )
+	ROM_LOAD( "scs-24.4e",   0x0000, 0x4000, CRC(87783c36) SHA1(7102be795afcddd76b4d41823e95c65fe1ffbca0) )
 
 	ROM_REGION( 0xc000, "gfx2", 0 )
-	ROM_LOAD( "scm-23.5b",   0x0000, 0x4000, CRC(ab42f8e3) SHA1(8c2213b7c47a48e223fc3f7d323d16c0e4cd0457) )
+	ROM_LOAD( "scm-23.5b",   0x0000, 0x4000, CRC(ab42f8e3) SHA1(8c2213b7c47a48e223fc3f7d323d16c0e4cd0457) ) //sprites
 	ROM_LOAD( "scm-22.5e",   0x4000, 0x4000, CRC(0cad254c) SHA1(36e30e30b652b3a388a3c4a82251196f79368f59) )
 	ROM_LOAD( "scm-21.5g",   0x8000, 0x4000, CRC(b6b68998) SHA1(cc3c6d996beeedcc7e5199f10d65c5b1d3c6e666) )
 
@@ -121,12 +529,12 @@ ROM_START( sprcros2a )
 	ROM_LOAD( "scm-20.5k",   0x0000, 0x4000, CRC(67a099a6) SHA1(43981abdcaa0ff36183027a3c691ce2df7f06ec7) )
 
 	ROM_REGION( 0x0420, "proms", 0 )
-	ROM_LOAD( "sc-64.6a",    0x0000, 0x0020, CRC(336dd1c0) SHA1(f0a0d2c13617fd84ee55c0cb96643761a8735147) )
-	ROM_LOAD( "sc-63.3b",    0x0020, 0x0100, CRC(9034a059) SHA1(1801965b4f0f3e04ca4b3faf0ba3a27dbb008474) )
-	ROM_LOAD( "sc-62.3a",    0x0120, 0x0100, CRC(3c78a14f) SHA1(8f9c196a3e18bdce2d4855bc285bd5bde534bf09) )
-	ROM_LOAD( "sc-61.5a",    0x0220, 0x0100, CRC(2f71185d) SHA1(974fbb52285f01f4353e9acb1992dcd6fdefedcb) )
-	ROM_LOAD( "sc-60.4k",    0x0320, 0x0100, CRC(d7a4e57d) SHA1(6db02ec6aa55b05422cb505e63c71e36b4b11b4a) )
+	ROM_LOAD( "sc-64.6a",    0x0000, 0x0020, CRC(336dd1c0) SHA1(f0a0d2c13617fd84ee55c0cb96643761a8735147) ) //palette
+	ROM_LOAD( "sc-63.3b",    0x0020, 0x0100, CRC(9034a059) SHA1(1801965b4f0f3e04ca4b3faf0ba3a27dbb008474) ) //bg clut lo nibble
+	ROM_LOAD( "sc-62.3a",    0x0120, 0x0100, CRC(3c78a14f) SHA1(8f9c196a3e18bdce2d4855bc285bd5bde534bf09) ) //bg clut hi nibble
+	ROM_LOAD( "sc-61.5a",    0x0220, 0x0100, CRC(2f71185d) SHA1(974fbb52285f01f4353e9acb1992dcd6fdefedcb) ) //sprite clut
+	ROM_LOAD( "sc-60.4k",    0x0320, 0x0100, CRC(d7a4e57d) SHA1(6db02ec6aa55b05422cb505e63c71e36b4b11b4a) ) //fg clut
 ROM_END
 
-GAME( 1986, sprcros2, 0,        sprcros2, sprcros2, driver_device, 0, ROT0, "GM Shoji", "Super Cross II (Japan, set 1)", MACHINE_IS_SKELETON )
-GAME( 1986, sprcros2a,sprcros2, sprcros2, sprcros2, driver_device, 0, ROT0, "GM Shoji", "Super Cross II (Japan, set 2)", MACHINE_IS_SKELETON )
+GAME( 1986, sprcros2, 0,        sprcros2, sprcros2, driver_device, 0, ROT0, "GM Shoji", "Super Cross II (Japan, set 1)", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING )
+GAME( 1986, sprcros2a,sprcros2, sprcros2, sprcros2, driver_device, 0, ROT0, "GM Shoji", "Super Cross II (Japan, set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING )