text: /*
         Disco Boy
  
  Similar to mitchell.c / egghunt.c .. clearly derived from that hardware
  
  PCB Layout
  ----------
  
  SOFT ART CO. 1993 NO - 1021
  PROGRAM NO-93-01-14-0024
  +------------------------------------------+
  | YM3014 YM3812 10MHz            5.u94     |
  |       6116                    6.u124     |
  |       1.u45                    7.u95     |
  | M5205 2.u28                   8.u125     |
  |J     Z8400B                          6116|
  |A          6116          6116 TPC1020AFN  |
  |M          6116                       6116|
  |M    DSW2                                 |
  |A DSW1                          6264      |
  |      6264                       u80  u81 |
  |12MHz  u2                       u50  u5   |
  |      u18                        u78  u79 |
  |    Z0840004PSC                 u46  u49  |
  +------------------------------------------+
  
  Notes:
    Zilog Z0840004PSC (Z80 cpu, main program CPU)
    Goldstar Z8400B PS (Z80 cpu, sound CPU)
    Yamaha YM3014/YM3812 (rebadged as 83142/5A12)
    OKI M5205
    TI TPC1020AFN-084C
    10.000MHz & 12.000MHz OSCs
  
  */
  
  
  #include "driver.h"
  #include "cpu/z80/z80.h"
  #include "deprecat.h"
  #include "sound/msm5205.h"
  #include "sound/3812intf.h"
  
  static UINT8* discoboy_ram_part1;
  static UINT8* discoboy_ram_part2;
  static UINT8* discoboy_ram_part3;
  static UINT8* discoboy_ram_part4;
  static UINT8* discoboy_ram_att;
  
  static UINT8 discoboy_ram_bank;
  static UINT8 port_00;
  static UINT8 discoboy_gfxbank;
  static int adpcm_data;
  
  static VIDEO_START( discoboy )
  {
  }
  
  static void draw_sprites(running_machine *machine, bitmap_t *bitmap,const rectangle *cliprect)
  {
  	int flipscreen = 0;
  	int offs,sx,sy;
  
  	for (offs = 0x1000-0x40;offs >= 0;offs -= 0x20)
  	{
  		int code = discoboy_ram_part4[offs];
  		int attr = discoboy_ram_part4[offs+1];
  		int color = attr & 0x0f;
  		sx = discoboy_ram_part4[offs+3] + ((attr & 0x10) << 4);
  		sy = ((discoboy_ram_part4[offs+2] + 8) & 0xff) - 8;
  		code += (attr & 0xe0) << 3;
  
  		if (code>=0x400)
  		{
  			if ((discoboy_gfxbank&0x30) == 0x00)
  			{
  				code = 0x400 + (code & 0x3ff);
  			}
  			else if ((discoboy_gfxbank&0x30) == 0x10)
  			{
  				code = 0x400 + (code & 0x3ff) + 0x400;
  			}
  			else if ((discoboy_gfxbank&0x30) == 0x20)
  			{
  				code = 0x400 + (code & 0x3ff) + 0x800;
  			}
  			else if ((discoboy_gfxbank&0x30) == 0x30)
  			{
  				code = 0x400 + (code & 0x3ff) + 0xc00;
  			}
  			else
  			{
  				code = mame_rand(machine);
  			}
  		}
  
  		drawgfx_transpen(bitmap,cliprect,machine->gfx[0],
  				 code,
  				 color,
  				 flipscreen,0,
  				 sx,sy,15);
  	}
  }
  
  
  
  static VIDEO_UPDATE( discoboy )
  {
  	UINT16 x,y;
  	int i;
  	int count;
  	count = 0;
  
  	for (i=0;i<0x800;i+=2)
  	{
  		UINT16 pal;
  		int r,g,b;
  		pal = discoboy_ram_part1[i] | (discoboy_ram_part1[i+1] << 8);
  
  		b = ((pal >> 0) & 0xf) << 4;
  		g = ((pal >> 4) & 0xf) << 4;
  		r = ((pal >> 8) & 0xf) << 4;
  
  		palette_set_color(screen->machine, i/2, MAKE_RGB(r, g, b));
  	}
  
  	for (i=0;i<0x800;i+=2)
  	{
  		UINT16 pal;
  		int r,g,b;
  		pal = discoboy_ram_part2[i] | (discoboy_ram_part2[i+1] << 8);
  
  		b = ((pal >> 0) & 0xf) << 4;
  		g = ((pal >> 4) & 0xf) << 4;
  		r = ((pal >> 8) & 0xf) << 4;
  
  		palette_set_color(screen->machine, (i/2)+0x400, MAKE_RGB(r, g, b));
  	}
  
  	bitmap_fill(bitmap, cliprect, 0x3ff);
  
  	for (y=0;y<32;y++)
  	{
  		for (x=0;x<64;x++)
  		{
  			UINT16 tileno = discoboy_ram_part3[count]|(discoboy_ram_part3[count+1]<<8);
  
  			if (tileno>0x2000)
  			{
  				if ((discoboy_gfxbank & 0x40) == 0x40)
  					tileno = 0x2000 + (tileno&0x1fff) + 0x2000;
  				else
  					tileno = 0x2000 + (tileno&0x1fff) + 0x0000;
  
  
  			}
  
  			drawgfx_opaque(bitmap,cliprect,screen->machine->gfx[1], tileno ,discoboy_ram_att[count/2],0,0,x*8,y*8);
  			count+=2;
  		}
  	}
  
  	draw_sprites(screen->machine,bitmap,cliprect);
  
  	return 0;
  }
  
  #ifdef UNUSED_FUNCTION
  void discoboy_setrombank(UINT8 data)
  {
  	UINT8 *ROM = memory_region(machine, "maincpu");
  	data &=0x2f;
  	memory_set_bankptr(space->machine, 1, &ROM[0x6000+(data*0x1000)] );
  }
  #endif
  
  static WRITE8_HANDLER( rambank_select_w )
  {
  	discoboy_ram_bank = data;
  	if (data&=0x83) logerror("rambank_select_w !!!!!");
  }
  
  static WRITE8_HANDLER( discoboy_port_00_w )
  {
  	if (data & 0xfe) logerror("unk discoboy_port_00_w %02x\n",data);
  	port_00 = data;
  }
  
  static WRITE8_HANDLER( discoboy_port_01_w )
  {
  	UINT8 *ROM = memory_region(space->machine, "maincpu");
  	int rombank;
  
  	// 00 10 20 30 during gameplay  1,2,3 other times?? title screen bit 0x40 toggle
   	//printf("unk discoboy_port_01_w %02x\n",data);
  	// discoboy gfxbank
  	discoboy_gfxbank = data&0xf0;
  	rombank = data&0x07;
  
  	memory_set_bankptr(space->machine, 1, &ROM[0x10000 + rombank * 0x4000] );
  }
  
  static WRITE8_HANDLER( discoboy_port_03_w ) // sfx? (to sound cpu)
  {
  //  printf("unk discoboy_port_03_w %02x\n", data);
  //  cputag_set_input_line(space->machine, "audiocpu", INPUT_LINE_NMI, HOLD_LINE);
  	soundlatch_w(space, 0, data);
  	cputag_set_input_line(space->machine, "audiocpu", 0, HOLD_LINE);
  }
  
  static WRITE8_HANDLER( discoboy_port_06_w )
  {
  	//printf("unk discoboy_port_06_w %02x\n",data);
  	if (data!=0) logerror("port 06!!!! %02x\n",data);
  }
  
  
  static WRITE8_HANDLER( rambank_w )
  {
  	if (discoboy_ram_bank&0x20)
  	{
  		discoboy_ram_part2[offset] = data;
  	}
  	else
  	{
  		discoboy_ram_part1[offset] = data;
  	}
  }
  
  static READ8_HANDLER( rambank_r )
  {
  	if (discoboy_ram_bank&0x20)
  	{
  		return discoboy_ram_part2[offset];
  	}
  	else
  	{
  		return discoboy_ram_part1[offset];
  	}
  }
  
  static READ8_HANDLER( rambank2_r )
  {
  	if (port_00 == 0x00)
  	{
  		return discoboy_ram_part3[offset];
  	}
  	else if (port_00 == 0x01)
  	{
  		return discoboy_ram_part4[offset];
  	}
  	else
  	{
  		printf( "unk rb2_r\n");
  	}
  
  	return mame_rand(space->machine);
  }
  
  static WRITE8_HANDLER( rambank2_w )
  {
  
  	if (port_00 == 0x00)
  	{
  		discoboy_ram_part3[offset] = data;
  	}
  	else if (port_00 == 0x01)
  	{
  		discoboy_ram_part4[offset] = data;
  	}
  	else
  	{
  		printf( "unk rb2_w\n");
  	}
  }
  
  static READ8_HANDLER( discoboy_ram_att_r )
  {
  	return discoboy_ram_att[offset];
  }
  
  static WRITE8_HANDLER( discoboy_ram_att_w )
  {
  	discoboy_ram_att[offset] = data;
  }
  
  static ADDRESS_MAP_START( discoboy_map, ADDRESS_SPACE_PROGRAM, 8 )
  	AM_RANGE(0x0000, 0x7fff) AM_ROM
  	AM_RANGE(0x8000, 0xbfff) AM_ROMBANK(1)
  	AM_RANGE(0xc000, 0xc7ff) AM_READWRITE(rambank_r, rambank_w)
  	AM_RANGE(0xc800, 0xcfff) AM_READWRITE(discoboy_ram_att_r, discoboy_ram_att_w)
  	AM_RANGE(0xd000, 0xdfff) AM_READWRITE(rambank2_r, rambank2_w)
  	AM_RANGE(0xe000, 0xefff) AM_RAM
  	AM_RANGE(0xf000, 0xffff) AM_RAM
  ADDRESS_MAP_END
  
  
  static READ8_HANDLER( discoboy_port_06_r )
  {
  	return 0x00;
  }
  
  static ADDRESS_MAP_START( io_map, ADDRESS_SPACE_IO, 8 )
  	ADDRESS_MAP_GLOBAL_MASK(0xff)
  	AM_RANGE(0x00, 0x00) AM_READ_PORT("DSWA") AM_WRITE(discoboy_port_00_w)
  	AM_RANGE(0x01, 0x01) AM_READ_PORT("SYSTEM") AM_WRITE(discoboy_port_01_w)
  	AM_RANGE(0x02, 0x02) AM_READ_PORT("P1")
  	AM_RANGE(0x03, 0x03) AM_READ_PORT("P2") AM_WRITE(discoboy_port_03_w)
  	AM_RANGE(0x04, 0x04) AM_READ_PORT("DSWB")
  	AM_RANGE(0x06, 0x06) AM_READWRITE(discoboy_port_06_r, discoboy_port_06_w) // ???
  	AM_RANGE(0x07, 0x07) AM_WRITE(rambank_select_w) // 0x20 is palette bank bit.. others?
  ADDRESS_MAP_END
  
  /* Sound */
  
  //static WRITE8_HANDLER( splash_adpcm_data_w ){
  //  adpcm_data = data;
  //}
  
  static void splash_msm5205_int(const device_config *device)
  {
  	msm5205_data_w(device,adpcm_data >> 4);
  //  adpcm_data = (adpcm_data << 4) & 0xf0;
  }
  
  static ADDRESS_MAP_START( sound_map, ADDRESS_SPACE_PROGRAM, 8 )
  	AM_RANGE(0x0000, 0x7fff) AM_ROM
  	AM_RANGE(0xf000, 0xf7ff) AM_RAM
  	AM_RANGE(0xec00, 0xec01) AM_DEVWRITE("ym", ym3812_w)
  	AM_RANGE(0xf800, 0xf800) AM_READ(soundlatch_r)
  ADDRESS_MAP_END
  
  
  static INPUT_PORTS_START( discoboy )
  	PORT_START("DSWA")
  	PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SWA:6,7,8")
  	PORT_DIPSETTING(	0x00, DEF_STR( 4C_1C ) )
  	PORT_DIPSETTING(	0x01, DEF_STR( 3C_1C ) )
  	PORT_DIPSETTING(	0x03, DEF_STR( 2C_1C ) )
  	PORT_DIPSETTING(	0x07, DEF_STR( 1C_1C ) )
  	PORT_DIPSETTING(	0x02, DEF_STR( 2C_3C ) )
  	PORT_DIPSETTING(	0x06, DEF_STR( 1C_2C ) )
  	PORT_DIPSETTING(	0x05, DEF_STR( 1C_3C ) )
  	PORT_DIPSETTING(	0x04, DEF_STR( 1C_4C ) )
  	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SWA:5")
  	PORT_DIPSETTING(	0x08, "Every 150000" )
  	PORT_DIPSETTING(	0x00, "Every 300000" )
  	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Lives ) ) PORT_DIPLOCATION("SWA:4")
  	PORT_DIPSETTING(	0x10, "3" )
  	PORT_DIPSETTING(	0x00, "4" )
  	PORT_DIPNAME( 0x60, 0x60, DEF_STR( Difficulty ) ) PORT_DIPLOCATION("SWA:2,3")
  	PORT_DIPSETTING(	0x00, DEF_STR( Easy ) )
  	PORT_DIPSETTING(	0x60, DEF_STR( Normal ) )
  	PORT_DIPSETTING(	0x40, DEF_STR( Hard ) )
  	PORT_DIPSETTING(	0x20, DEF_STR( Hardest ) )
  	PORT_SERVICE_DIPLOC( 0x80, IP_ACTIVE_LOW, "SWA:1" )
  
  	PORT_START("SYSTEM")
  	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
  	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
  	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 )
  	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )
  
  	PORT_START("P1")
  	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
  	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
  	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
  	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
  	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
  	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
  
  	PORT_START("P2")
  	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
  	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
  	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
  	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
  	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
  	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
  	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
  
  	PORT_START("DSWB")
  	PORT_DIPUNUSED_DIPLOC( 0x01, IP_ACTIVE_LOW, "SWB:8" )
  	PORT_DIPUNUSED_DIPLOC( 0x02, IP_ACTIVE_LOW, "SWB:7" )
  	PORT_DIPUNUSED_DIPLOC( 0x04, IP_ACTIVE_LOW, "SWB:6" )
  	PORT_DIPUNUSED_DIPLOC( 0x08, IP_ACTIVE_LOW, "SWB:5" )
  	PORT_DIPUNUSED_DIPLOC( 0x10, IP_ACTIVE_LOW, "SWB:4" )
  	PORT_DIPUNUSED_DIPLOC( 0x20, IP_ACTIVE_LOW, "SWB:3" )
  	PORT_DIPUNUSED_DIPLOC( 0x40, IP_ACTIVE_LOW, "SWB:2" )
  	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPLOCATION("SWB:1")
  	PORT_DIPSETTING(	0x80, DEF_STR( Off ) )
  	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
  INPUT_PORTS_END
  
  
  static const gfx_layout tiles8x8_layout =
  {
  	16,16,
  	RGN_FRAC(1,2),
  	4,
  	{ RGN_FRAC(1,2)+4,RGN_FRAC(1,2),  RGN_FRAC(0,2)+4,RGN_FRAC(0,2) },
  	{ 0, 1, 2, 3, 8, 9, 10, 11, 256, 257, 258, 259, 264,265,266,267  },
  	{ 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 },
  	16*32
  };
  
  static const gfx_layout tiles8x8_layout2 =
  {
  	8,8,
  	RGN_FRAC(1,4),
  	4,
  	{ RGN_FRAC(1,4), RGN_FRAC(0,4),RGN_FRAC(3,4),RGN_FRAC(2,4) },
  	{ 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
  };
  
  static GFXDECODE_START( discoboy )
  	GFXDECODE_ENTRY( "gfx1", 0, tiles8x8_layout, 0x000, 128 )
  	GFXDECODE_ENTRY( "gfx2", 0, tiles8x8_layout2, 0x000, 128 )
  GFXDECODE_END
  
  
  
  static const msm5205_interface discoboy_msm5205_interface =
  {
  	splash_msm5205_int,	/* IRQ handler */
  	MSM5205_S48_4B		/* ??? unknown hz */
  };
  
  static MACHINE_RESET( discoboy )
  {
  	discoboy_ram_bank = 0;
  	port_00 = 0;
  	discoboy_gfxbank = 0;
  	adpcm_data = 0x80;
  }
  
  static MACHINE_DRIVER_START( discoboy )
  	/* basic machine hardware */
  	MDRV_CPU_ADD("maincpu", Z80,12000000/2)		 /* 6 MHz? */
  	MDRV_CPU_PROGRAM_MAP(discoboy_map)
  	MDRV_CPU_IO_MAP(io_map)
  	MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
  
  	MDRV_CPU_ADD("audiocpu", Z80,10000000/2)		 /* 5 MHz? */
  	MDRV_CPU_PROGRAM_MAP(sound_map)
  //  MDRV_CPU_IO_MAP(sound_io_map)
  //  MDRV_CPU_VBLANK_INT("screen", irq0_line_hold)
  	MDRV_CPU_VBLANK_INT_HACK(nmi_line_pulse,32)
  
  	/* video hardware */
  	MDRV_SCREEN_ADD("screen", RASTER)
  	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
  	MDRV_SCREEN_REFRESH_RATE(60)
  	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
  	MDRV_SCREEN_SIZE(512, 256)
  	MDRV_SCREEN_VISIBLE_AREA(8*8, 512-1-8*8, 0+8, 256-1-8)
  
  	MDRV_GFXDECODE(discoboy)
  	MDRV_PALETTE_LENGTH(0x1000)
  
  	MDRV_VIDEO_START(discoboy)
  	MDRV_VIDEO_UPDATE(discoboy)
  
  	MDRV_MACHINE_RESET( discoboy )
  
  	/* sound hardware */
  	MDRV_SPEAKER_STANDARD_MONO("mono")
  
  	MDRV_SOUND_ADD("ym", YM3812, 2500000)
  	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.60)
  
  
  	MDRV_SOUND_ADD("msm", MSM5205, 384000) // ???? unknown
  	MDRV_SOUND_CONFIG(discoboy_msm5205_interface)
  	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80)
  
  MACHINE_DRIVER_END
  
  static DRIVER_INIT( discoboy )
  {
  	UINT8 *ROM = memory_region(machine, "maincpu");
  
  	discoboy_ram_part1 = auto_alloc_array(machine, UINT8, 0x800);
  	discoboy_ram_part2 = auto_alloc_array(machine, UINT8, 0x800);
  	discoboy_ram_att = auto_alloc_array(machine, UINT8, 0x800);
  
  	discoboy_ram_part3 = auto_alloc_array(machine, UINT8, 0x1000);
  	discoboy_ram_part4 = auto_alloc_array(machine, UINT8, 0x1000);
  
  	memset(discoboy_ram_part1,0,0x800);
  	memset(discoboy_ram_part2,0,0x800);
  	memset(discoboy_ram_att,0,0x800);
  	memset(discoboy_ram_part3,0,0x1000);
  	memset(discoboy_ram_part4,0,0x1000);
  
  
  	state_save_register_global_pointer(machine, discoboy_ram_part1, 0x800);
  	state_save_register_global_pointer(machine, discoboy_ram_part2, 0x800);
  	state_save_register_global_pointer(machine, discoboy_ram_att, 0x800);
  	state_save_register_global_pointer(machine, discoboy_ram_part3, 0x1000);
  	state_save_register_global_pointer(machine, discoboy_ram_part4, 0x1000);
  
  	discoboy_ram_bank = 0;
  
  	memory_set_bankptr(machine, 1, &ROM[0x10000] );
  }
  
  ROM_START( discoboy )
  	ROM_REGION( 0x30000, "maincpu", 0 )
  	ROM_LOAD( "u2",  0x00000, 0x10000, CRC(44a4fefa) SHA1(29b74bb739afffb7baefb5ed4da09cdb1559b011) )
  	ROM_LOAD( "u18", 0x10000, 0x20000, CRC(88d1282d) SHA1(1f11dad0f577198c54a1dc182ba7502e398b998f) )
  
  	ROM_REGION( 0x20000, "audiocpu", 0 )
  	ROM_LOAD( "2.u28",  0x00000, 0x10000, CRC(7c2ed174) SHA1(ace209dc4cc7a4ffca062842defd84cefc5b10d2))
  	ROM_LOAD( "1.u45",  0x10000, 0x10000, CRC(c266c6df) SHA1(f76e38ded43f56a486cf6569c679ddb57a4165fb) )
  
  	ROM_REGION( 0x100000, "gfx1", ROMREGION_INVERT )
  	ROM_LOAD( "5.u94",   0x00000, 0x10000, CRC(dbd20836) SHA1(d97651626b1dc16b93f8aed28bac19fd177e626f) )
  	ROM_LOAD( "6.u124",  0x10000, 0x40000, CRC(e20d41f8) SHA1(792294a34840867072bc484d6f3cae3502c8bc28) )
  	ROM_LOAD( "7.u95",   0x80000, 0x10000, CRC(1d5617a2) SHA1(6b6bd50c1984748dc8bf6600431d9bb6fe443873) )
  	ROM_LOAD( "8.u125",  0x90000, 0x40000, CRC(30be1340) SHA1(e4765b75c8f774c6f7f7b5496a50c33ee3950550) )
  
  	ROM_REGION( 0x100000, "gfx2", ROMREGION_INVERT )
  	ROM_LOAD( "u80",   0x00000, 0x10000, CRC(4cc642ae) SHA1(2a59ebc8ab27bf7c3c1aa389ea32fb01d5cfdce8) )
  	ROM_LOAD( "u50",   0x10000, 0x20000, CRC(1557ca92) SHA1(5a0afbeede6f0ae1c75bdec446132c673aeb0fe7) )
  	ROM_LOAD( "u81",   0x40000, 0x10000, CRC(9e04274e) SHA1(70c28212b242335353e6dd48b7eb176146bec457) )
  	ROM_LOAD( "u5",    0x50000, 0x20000, CRC(a07df669) SHA1(7f09b2508b9bffed7a4cd191f707af3c0c2a1de2) )
  	ROM_LOAD( "u78",   0x80000, 0x10000, CRC(04571f70) SHA1(afdc7d84f7804c2ced413d13e6985a05f841e79e) )
  	ROM_LOAD( "u46",   0x90000, 0x20000, CRC(764ffde4) SHA1(637df403a6ac73456892add3f2403a92afb67f19) )
  	ROM_LOAD( "u79",   0xc0000, 0x10000, CRC(646f0f83) SHA1(d5cd050872d4b8c2fc89c3c0f434b1d66e5f1c59) )
  	ROM_LOAD( "u49",   0xd0000, 0x20000, CRC(0b6c0d8d) SHA1(820a12c84af4fd5a04e1eca3cbace0002d3024b6) )
  ROM_END
  
  
  GAME( 1993, discoboy,  0,    discoboy, discoboy, discoboy, ROT270, "Soft Art Co.", "Disco Boy", 0 )
  