#include "driver.h"

int  retofinv_vh_start(void);
void retofinv_vh_stop(void);
void retofinv_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void retofinv_vh_screenrefresh(struct osd_bitmap *bitmap, int full_refresh);
int  retofinv_bg_videoram_r(int offset);
int  retofinv_fg_videoram_r(int offset);
int  retofinv_bg_colorram_r(int offset);
int  retofinv_fg_colorram_r(int offset);
void retofinv_bg_videoram_w(int offset, int data);
void retofinv_fg_videoram_w(int offset, int data);
void retofinv_bg_colorram_w(int offset, int data);
void retofinv_fg_colorram_w(int offset, int data);
void retofinv_flip_screen_w(int offset, int data);

extern int retofinv_videoram_size;
extern unsigned char *retofinv_sprite_ram1;
extern unsigned char *retofinv_sprite_ram2;
extern unsigned char *retofinv_sprite_ram3;
extern unsigned char *retofinv_fg_videoram;
extern unsigned char *retofinv_bg_videoram;
extern unsigned char *retofinv_fg_colorram;
extern unsigned char *retofinv_bg_colorram;
extern unsigned char *retofinv_fg_char_bank;
extern unsigned char *retofinv_bg_char_bank;

static unsigned char cpu0_me000=0,cpu0_me800_last=0,cpu2_m6000=0;

static void retofinv_init_machine(void)
{
	cpu0_me800_last = 0;
	cpu2_m6000 = 0;
}

static int  retofinv_shared_ram_r(int offset)
{
	unsigned char *RAM = memory_region(Machine->drv->cpu[0].memory_region);
	return RAM[0x8800+offset];
}

static void retofinv_shared_ram_w(int offset, int data)
{
	unsigned char *RAM = memory_region(Machine->drv->cpu[0].memory_region);
	RAM[0x8800+offset] = data;
}

static void retofinv_protection_w(int offset,int data)
{
	unsigned char *RAM = memory_region(Machine->drv->cpu[0].memory_region);

	if (cpu0_me800_last & 0x80)
	{
		cpu0_me000 = data;
		cpu0_me800_last = 0;
		return;
	}
	else if (data < 0x10)
	{
		switch(data)
		{
			case 0x01:
				cpu0_me000 = ((cpu0_me000 >> 3) & 3) + 1;
				break;
			case 0x02:
				cpu0_me000 = cpu0_me000 & 3;
				break;
			default:
				cpu0_me000 = cpu0_me000;
		}
	}
	else if (data > 0x0f)
	{
		switch(data)
		{
			case 0x30:
				cpu0_me000 = cpu0_me000;
				break;
			case 0x40:
				cpu0_me000 = RAM[0x9800];
				break;
			case 0x41:
				cpu0_me000 = RAM[0x9801];
				break;
			case 0x42:
				cpu0_me000 = RAM[0x9802];
				break;
			default:
				cpu0_me000 = 0x3b;
				break;
		}
	}
	cpu0_me800_last = data;
}

static int retofinv_protection_r(int offset)
{
	return cpu0_me000;
}

static void reset_cpu2_w(int offset,int data)
{
     if (data)
	    cpu_set_reset_line(2,PULSE_LINE);
}

static void reset_cpu1_w(int offset,int data)
{
    if (data)
	    cpu_set_reset_line(1,PULSE_LINE);
}

static void cpu1_halt_w(int offset,int data)
{
	if (data)
		cpu_halt(1,1);
	else
		cpu_halt(1,0);
}

static int protection_2_r(int offset)
{
	return 0;
}

static int protection_3_r(int offset)
{
	return 0x30;
}

static void cpu2_m6000_w(int offset,int data)
{
	cpu2_m6000 = data;
}

static int cpu0_mf800_r(int offset)
{
	return cpu2_m6000;
}

static void soundcommand_w(int offset,int data)
{
      soundlatch_w(0, data);
      cpu_set_irq_line(2, 0, HOLD_LINE);
}

static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0x5fff, MRA_ROM },
	{ 0x7b00, 0x7b00, protection_2_r },
	{ 0x8000, 0x83ff, retofinv_fg_videoram_r },
	{ 0x8400, 0x87ff, retofinv_fg_colorram_r },
	{ 0x8800, 0x9fff, retofinv_shared_ram_r },
	{ 0xa000, 0xa3ff, retofinv_bg_videoram_r },
	{ 0xa400, 0xa7ff, retofinv_bg_colorram_r },
	{ 0xc800, 0xc800, MRA_NOP },
	{ 0xc000, 0xc000, input_port_1_r },
	{ 0xc001, 0xc001, input_port_2_r },
	{ 0xc002, 0xc002, protection_2_r },
	{ 0xc003, 0xc003, protection_3_r },
	{ 0xc004, 0xc004, input_port_0_r },
	{ 0xc005, 0xc005, input_port_3_r },
	{ 0xc006, 0xc006, input_port_5_r },
	{ 0xc007, 0xc007, input_port_4_r },
	{ 0xe000, 0xe000, retofinv_protection_r },
	{ 0xf800, 0xf800, cpu0_mf800_r },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0x5fff, MWA_ROM },
	{ 0x7fff, 0x7fff, MWA_NOP },
	{ 0x8000, 0x83ff, retofinv_fg_videoram_w, &retofinv_fg_videoram, &retofinv_videoram_size },
	{ 0x8400, 0x87ff, retofinv_fg_colorram_w, &retofinv_fg_colorram },
	{ 0x8800, 0x9fff, retofinv_shared_ram_w },
	{ 0x8f00, 0x8f7f, MWA_RAM, &retofinv_sprite_ram1 },	/* covered by the above, */
	{ 0x9700, 0x977f, MWA_RAM, &retofinv_sprite_ram2 },	/* here only to */
	{ 0x9f00, 0x9f7f, MWA_RAM, &retofinv_sprite_ram3 },	/* initialize the pointers */
	{ 0xa000, 0xa3ff, retofinv_bg_videoram_w, &retofinv_bg_videoram },
	{ 0xa400, 0xa7ff, retofinv_bg_colorram_w, &retofinv_bg_colorram },
	{ 0xb800, 0xb800, retofinv_flip_screen_w },
	{ 0xb801, 0xb801, MWA_RAM, &retofinv_fg_char_bank },
	{ 0xb802, 0xb802, MWA_RAM, &retofinv_bg_char_bank },
	{ 0xc800, 0xc800, MWA_NOP },
	{ 0xc801, 0xc801, reset_cpu2_w },
	{ 0xc802, 0xc802, reset_cpu1_w },
	{ 0xc803, 0xc803, MWA_NOP },
	{ 0xc804, 0xc804, MWA_NOP },
	{ 0xc805, 0xc805, cpu1_halt_w },
	{ 0xd800, 0xd800, soundcommand_w },
	{ 0xd000, 0xd000, MWA_NOP },
	{ 0xe800, 0xe800, retofinv_protection_w },
	{ -1 }	/* end of table */
};

static struct MemoryReadAddress readmem_sub[] =
{
	{ 0x0000, 0x1fff, MRA_ROM },
	{ 0x8000, 0x83ff, retofinv_fg_videoram_r },
	{ 0x8400, 0x87ff, retofinv_fg_colorram_r },
	{ 0x8800, 0x9fff, retofinv_shared_ram_r },
	{ 0xa000, 0xa3ff, retofinv_bg_videoram_r },
	{ 0xa400, 0xa7ff, retofinv_bg_colorram_r },
	{ 0xc804, 0xc804, MRA_NOP },
	{ 0xe000, 0xe000, retofinv_protection_r },
	{ 0xe800, 0xe800, MRA_NOP },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem_sub[] =
{
	{ 0x0000, 0x1fff, MWA_ROM },
	{ 0x8000, 0x83ff, retofinv_fg_videoram_w },
	{ 0x8400, 0x87ff, retofinv_fg_colorram_w },
	{ 0x8800, 0x9fff, retofinv_shared_ram_w },
	{ 0xa000, 0xa3ff, retofinv_bg_videoram_w },
	{ 0xa400, 0xa7ff, retofinv_bg_colorram_w },
	{ 0xc804, 0xc804, MWA_NOP },
	{ -1 }	/* end of table */
};

static struct MemoryReadAddress readmem_sound[] =
{
	{ 0x0000, 0x1fff, MRA_ROM },
	{ 0x2000, 0x27ff, MRA_RAM },
	{ 0x4000, 0x4000, soundlatch_r },
	{ 0xe000, 0xe000, MRA_NOP },  		/* Rom version ? */
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem_sound[] =
{
	{ 0x0000, 0x1fff, MWA_ROM },
	{ 0x2000, 0x27ff, MWA_RAM },
	{ 0x6000, 0x6000, cpu2_m6000_w },
	{ 0x8000, 0x8000, SN76496_0_w },
	{ 0xa000, 0xa000, SN76496_1_w },
	{ -1 }	/* end of table */
};


INPUT_PORTS_START( retofinv )
	PORT_START      /* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_TILT )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH,IPT_COIN1 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH,IPT_COIN2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START      /* IN1 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT  | IPF_2WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_2WAY )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 )

	PORT_START      /* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT  | IPF_2WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT  | IPF_2WAY | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )

	PORT_START      /* DSW1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x03, "30k, 80k & every 80k" )
	PORT_DIPSETTING(    0x02, "30k, 80k" )
	PORT_DIPSETTING(    0x01, "30k" )
	PORT_DIPSETTING(    0x00, "None" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Free_Play ) )
	PORT_DIPSETTING(    0x04, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x18, 0x08, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x18, "1" )
	PORT_DIPSETTING(    0x10, "2" )
	PORT_DIPSETTING(    0x08, "3" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Cocktail ) )

	PORT_START      /* DSW3 modified by Shingo Suzuki 1999/11/03 */
	PORT_BITX(    0x01, 0x01, IPT_DIPSWITCH_NAME | IPF_CHEAT, "Push Start to Skip Stage", IP_KEY_NONE, IP_JOY_NONE )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Coin Per Play Display" )
	PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x20, 0x20, "Year Display" )
	PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Yes ) )
	PORT_BITX(    0x40, 0x40, IPT_DIPSWITCH_NAME | IPF_CHEAT, "Invulnerability", IP_KEY_NONE, IP_JOY_NONE )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x80, "A and B" )
	PORT_DIPSETTING(    0x00, "A only" )

        PORT_START      /* DSW2 */
	PORT_DIPNAME( 0x0f, 0x00, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x0f, DEF_STR( 9C_1C ) )
	PORT_DIPSETTING(    0x0e, DEF_STR( 8C_1C ) )
	PORT_DIPSETTING(    0x0d, DEF_STR( 7C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 6C_1C ) )
	PORT_DIPSETTING(    0x0b, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0x0a, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x09, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x08, 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_DIPSETTING(    0x06, DEF_STR( 1C_7C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 1C_8C ) )
	PORT_DIPNAME( 0xf0, 0x00, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0xf0, DEF_STR( 9C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 8C_1C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 7C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 6C_1C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x90, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x50, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 1C_7C ) )
	PORT_DIPSETTING(    0x70, DEF_STR( 1C_8C ) )
INPUT_PORTS_END


static struct GfxLayout charlayout =
{
	8,8,	/* 8*8 characters */
	512,	/* 512 characters */
	1,	/* 1 bits per pixel */
	{ 0 },
	{ 0, 1, 2, 3, 4, 5, 6, 7 },		/* x bit */
	{ 56, 48, 40, 32, 24, 16, 8, 0 },	/* y bit */
	8*8 	/* every char takes 8 consecutive bytes */
};

static struct GfxLayout bglayout =
{
	8,8,	/* 8*8 characters */
	512,	/* 512 characters */
	4,	/* 4 bits per pixel */
	{ 0, 0x2000*8+4, 0x2000*8, 4 },
	{ 8*8+3, 8*8+2, 8*8+1, 8*8+0, 3, 2, 1, 0 },
	{ 7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 },
	16*8	/* every char takes 16 consecutive bytes */
};

static struct GfxLayout spritelayout =
{
	16,16,	/* 16*16 characters */
	256,	/* 256 characters */
	4,	/* 4 bits per pixel */
	{ 0, 0x4000*8+4, 0x4000*8, 4 },
	{ 24*8+3, 24*8+2, 24*8+1, 24*8+0, 16*8+3, 16*8+2, 16*8+1, 16*8+0,
	  8*8+3, 8*8+2, 8*8+1, 8*8+0, 3, 2, 1, 0 },
	{ 39*8, 38*8, 37*8, 36*8, 35*8, 34*8, 33*8, 32*8,
	  7*8, 6*8, 5*8, 4*8, 3*8, 2*8, 1*8, 0*8 },
  	64*8	/* every char takes 64 consecutive bytes */
};

static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,             0, 256 },
	{ 1, 0x2000, &bglayout,           256*2,  64 },
	{ 1, 0x6000, &spritelayout, 64*16+256*2,  64 },
	{ -1 } /* end of array */
};

static struct SN76496interface sn76496_interface =
{
	2,		/* 2 chips */
	{ 3072000, 3072000 },	/* ??? */
	{ 80, 80 }
};

static struct MachineDriver machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			3072000,
			0,
			readmem, writemem,0,0,
			interrupt,1
		},
		{
			CPU_Z80,
			3072000,
			2,
			readmem_sub, writemem_sub,0,0,
			interrupt,1
		},
		{
			CPU_Z80,
			3072000,
			3,
			readmem_sound, writemem_sound,0,0,
			nmi_interrupt,2
		},
	},
	60,DEFAULT_REAL_60HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	100,					/* 100 CPU slices per frame - enough for the sound CPU to read all commands */
	0,
	/* video hardware */
	36*8, 32*8,
	{ 0*8, 36*8-1, 2*8, 30*8-1 },
	gfxdecodeinfo,
	256, 256*2+64*16+64*16,
	retofinv_vh_convert_color_prom,

	VIDEO_TYPE_RASTER,
	0,
	retofinv_vh_start,
	retofinv_vh_stop,
	retofinv_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_SN76496,
			&sn76496_interface
		}
	}
};

/***************************************************************************

  Game driver(s)

***************************************************************************/

ROM_START( retofinv )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "ic70.rom", 0x0000, 0x2000, 0xeae7459d )
	ROM_LOAD( "ic71.rom", 0x2000, 0x2000, 0x72895e37 )
	ROM_LOAD( "ic72.rom", 0x4000, 0x2000, 0x505dd20b )

	ROM_REGION(0x10000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "ic61.rom", 0x0000, 0x2000, 0x4e3f501c )
	ROM_LOAD( "ic55.rom", 0x2000, 0x2000, 0xef7f8651 )
	ROM_LOAD( "ic56.rom", 0x4000, 0x2000, 0x03b40905 )

	ROM_LOAD( "ic8.rom",  0x6000, 0x2000, 0x6afdeec8 )
	ROM_LOAD( "ic9.rom",  0x8000, 0x2000, 0xd3dc9da3 )
	ROM_LOAD( "ic10.rom", 0xa000, 0x2000, 0xd10b2eed )
	ROM_LOAD( "ic11.rom", 0xc000, 0x2000, 0x00ca6b3d )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "ic62.rom", 0x0000, 0x2000, 0xd2899cc1 )

	ROM_REGION(0x10000)	/* 64k for sound cpu */
	ROM_LOAD( "ic17.rom", 0x0000, 0x2000, 0x9025abea )

	ROM_REGIONX( 0x0b00, REGION_PROMS )
	ROM_LOAD( "74s287.p6", 0x0000, 0x0100, 0x50030af0 )	/* palette blue bits   */
	ROM_LOAD( "74s287.o6", 0x0100, 0x0100, 0xe8f34e11 )	/* palette green bits */
	ROM_LOAD( "74s287.q5", 0x0200, 0x0100, 0xe9643b8b )	/* palette red bits  */
	ROM_LOAD( "82s191n",   0x0300, 0x0800, 0x93c891e3 )	/* lookup table */
ROM_END

ROM_START( retofin1 )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "roi.02",  0x0000, 0x2000, 0xd98fd462 )
	ROM_LOAD( "roi.01b", 0x2000, 0x2000, 0x3379f930 )
	ROM_LOAD( "roi.01",  0x4000, 0x2000, 0x57679062 )

	ROM_REGION(0x10000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "ic61.rom", 0x0000, 0x2000, 0x4e3f501c )
	ROM_LOAD( "ic55.rom", 0x2000, 0x2000, 0xef7f8651 )
	ROM_LOAD( "ic56.rom", 0x4000, 0x2000, 0x03b40905 )

	ROM_LOAD( "ic8.rom",  0x6000, 0x2000, 0x6afdeec8 )
	ROM_LOAD( "ic9.rom",  0x8000, 0x2000, 0xd3dc9da3 )
	ROM_LOAD( "ic10.rom", 0xa000, 0x2000, 0xd10b2eed )
	ROM_LOAD( "ic11.rom", 0xc000, 0x2000, 0x00ca6b3d )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "ic62.rom", 0x0000, 0x2000, 0xd2899cc1 )

	ROM_REGION(0x10000)	/* 64k for sound cpu */
	ROM_LOAD( "ic17.rom", 0x0000, 0x2000, 0x9025abea )

	ROM_REGIONX( 0x0b00, REGION_PROMS )
	ROM_LOAD( "74s287.p6", 0x0000, 0x0100, 0x50030af0 )	/* palette blue bits   */
	ROM_LOAD( "74s287.o6", 0x0100, 0x0100, 0xe8f34e11 )	/* palette green bits */
	ROM_LOAD( "74s287.q5", 0x0200, 0x0100, 0xe9643b8b )	/* palette red bits  */
	ROM_LOAD( "82s191n",   0x0300, 0x0800, 0x93c891e3 )	/* lookup table */
ROM_END

ROM_START( retofin2 )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "ri-c.1e", 0x0000, 0x2000, 0xe3c31260 )
	ROM_LOAD( "roi.01b", 0x2000, 0x2000, 0x3379f930 )
	ROM_LOAD( "ri-a.1c", 0x4000, 0x2000, 0x3ae7c530 )

	ROM_REGION(0x10000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "ic61.rom", 0x0000, 0x2000, 0x4e3f501c )
	ROM_LOAD( "ic55.rom", 0x2000, 0x2000, 0xef7f8651 )
	ROM_LOAD( "ic56.rom", 0x4000, 0x2000, 0x03b40905 )

	ROM_LOAD( "ic8.rom",  0x6000, 0x2000, 0x6afdeec8 )
	ROM_LOAD( "ic9.rom",  0x8000, 0x2000, 0xd3dc9da3 )
	ROM_LOAD( "ic10.rom", 0xa000, 0x2000, 0xd10b2eed )
	ROM_LOAD( "ic11.rom", 0xc000, 0x2000, 0x00ca6b3d )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "ic62.rom", 0x0000, 0x2000, 0xd2899cc1 )

	ROM_REGION(0x10000)	/* 64k for sound cpu */
	ROM_LOAD( "ic17.rom", 0x0000, 0x2000, 0x9025abea )

	ROM_REGIONX( 0x0b00, REGION_PROMS )
	ROM_LOAD( "74s287.p6", 0x0000, 0x0100, 0x50030af0 )	/* palette blue bits   */
	ROM_LOAD( "74s287.o6", 0x0100, 0x0100, 0xe8f34e11 )	/* palette green bits */
	ROM_LOAD( "74s287.q5", 0x0200, 0x0100, 0xe9643b8b )	/* palette red bits  */
	ROM_LOAD( "82s191n",   0x0300, 0x0800, 0x93c891e3 )	/* lookup table */
ROM_END



static int hiload(void)
{
	unsigned char *RAM = memory_region(Machine->drv->cpu[0].memory_region);

	/* check if the hi score table has already been initialized */
        if (memcmp(&RAM[0x990F],"\x00\x20\x00",3) == 0)
	{
		void *f;

		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{

                        osd_fread(f,&RAM[0x9980], 0x23);
                        memcpy(&RAM[0x990F], &RAM[0x999C], 3);
                        osd_fclose(f);
		}
		return 1;
	}
	else return 0;	/* we can't load the hi scores yet */
}


static void hisave(void)
{
	void *f;
	unsigned char *RAM = memory_region(Machine->drv->cpu[0].memory_region);

       	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
        {
                 osd_fwrite(f,&RAM[0x9980], 0x23);
                 osd_fclose(f);
        }
}


struct GameDriver driver_retofinv =
{
	__FILE__,
	0,
	"retofinv",
	"Return of the Invaders",
	"1985",
	"Taito Corporation",
	"Jarek Parchanski (MAME driver)\nAndrea Mazzoleni (MAME driver)\nRicardo Fdez Vega (hardware info)\nLee Taylor (hardware info)\n",
	0,
	&machine_driver,
	0,
	rom_retofinv,
	0, 0,
	0,
	0,
	input_ports_retofinv,
	0, 0, 0,
	ORIENTATION_ROTATE_270,

	hiload, hisave
};

struct GameDriver driver_retofin1 =
{
	__FILE__,
	&driver_retofinv,
	"retofin1",
	"Return of the Invaders (bootleg set 1)",
	"1985",
	"bootleg",
	"Jarek Parchanski (MAME driver)\nAndrea Mazzoleni (MAME driver)\nRicardo Fdez Vega (hardware info)\nLee Taylor (hardware info)\n",
	0,
	&machine_driver,
	0,
	rom_retofin1,
	0, 0,
	0,
	0,
	input_ports_retofinv,
	0, 0, 0,
	ORIENTATION_ROTATE_270,

	hiload, hisave
};

struct GameDriver driver_retofin2 =
{
	__FILE__,
	&driver_retofinv,
	"retofin2",
	"Return of the Invaders (bootleg set 2)",
	"1985",
	"bootleg",
	"Jarek Parchanski (MAME driver)\nAndrea Mazzoleni (MAME driver)\nRicardo Fdez Vega (hardware info)\nLee Taylor (hardware info)\n",
	0,
	&machine_driver,
	0,
	rom_retofin2,
	0, 0,
	0,
	0,
	input_ports_retofinv,
	0, 0, 0,
	ORIENTATION_ROTATE_270,

	hiload, hisave
};
