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

Dig Dug

driver by Aaron Giles


-----------+---+-----------------+-------------------------
   hex     |r/w| D D D D D D D D |
 location  |   | 7 6 5 4 3 2 1 0 | function
-----------+---+-----------------+-------------------------
0000-3FFF  | R | D D D D D D D D | CPU 1 rom (16k)
0000-1FFF  | R | D D D D D D D D | CPU 2 rom (8k)
0000-0FFF  | R | D D D D D D D D | CPU 3 rom (4k)
-----------+---+-----------------+-------------------------
6800-680F  | W | - - - - D D D D | Audio control
6810-681F  | W | - - - - D D D D | Audio control
-----------+---+-----------------+-------------------------
6820       | W | - - - - - - - D | 0 = Reset IRQ1(latched)
6821       | W | - - - - - - - D | 0 = Reset IRQ2(latched)
6822       | W | - - - - - - - D | 0 = Reset NMI3(latched)
6823       | W | - - - - - - - D | 0 = Reset #2,#3 CPU
6825       | W | - - - - - - - D | custom 53 mode1
6826       | W | - - - - - - - D | custom 53 mode2
6827       | W | - - - - - - - D | custom 53 mode3
-----------+---+-----------------+-------------------------
6830       | W |                 | watchdog reset
-----------+---+-----------------+-------------------------
7000       |R/W| D D D D D D D D | custom 06 Data
7100       |R/W| D D D D D D D D | custom 06 Command
-----------+---+-----------------+-------------------------
8000-87FF  |R/W| D D D D D D D D | 2k playfeild RAM
-----------+---+-----------------+-------------------------
8B80-8BFF  |R/W| D D D D D D D D | 1k sprite RAM (PIC,COL)
9380-93FF  |R/W| D D D D D D D D | 1k sprite RAM (VPOS,HPOS)
9B80-9BFF  |R/W| D D D D D D D D | 1k sprite RAM (FLIP)
-----------+---+-----------------+-------------------------
A000       | W | - - - - - - - D | playfield select
A001       | W | - - - - - - - D | playfield select
A002       | W | - - - - - - - D | Alpha color select
A003       | W | - - - - - - - D | playfield enable
A004       | W | - - - - - - - D | playfield color select
A005       | W | - - - - - - - D | playfield color select
A007       | W | - - - - - - - D | flip video
-----------+---+-----------------+-------------------------
B800-B83F  | W | D D D D D D D D | write EAROM addr,  data
B800       | R | D D D D D D D D | read  EAROM data
B840       | W |         D D D D | write EAROM control
-----------+---+-----------------+-------------------------

Dig Dug memory map (preliminary)

CPU #1:
0000-3fff ROM
CPU #2:
0000-1fff ROM
CPU #3:
0000-0fff ROM
ALL CPUS:
8000-83ff Video RAM
8400-87ff Color RAM
8b80-8bff sprite code/color
9380-93ff sprite position
9b80-9bff sprite control
8800-9fff RAM

read:
6800-6807 dip switches (only bits 0 and 1 are used - bit 0 is DSW1, bit 1 is DSW2)
          dsw1:
            bit 6-7 lives
            bit 3-5 bonus
            bit 0-2 coins per play
		  dsw2: (bootleg version, the original version is slightly different)
		    bit 7 cocktail/upright (1 = upright)
            bit 6 ?
            bit 5 RACK TEST
            bit 4 pause (0 = paused, 1 = not paused)
            bit 3 ?
            bit 2 ?
            bit 0-1 difficulty
7000-     custom IO chip return values
7100      custom IO chip status ($10 = command executed)

write:
6805      sound voice 1 waveform (nibble)
6811-6813 sound voice 1 frequency (nibble)
6815      sound voice 1 volume (nibble)
680a      sound voice 2 waveform (nibble)
6816-6818 sound voice 2 frequency (nibble)
681a      sound voice 2 volume (nibble)
680f      sound voice 3 waveform (nibble)
681b-681d sound voice 3 frequency (nibble)
681f      sound voice 3 volume (nibble)
6820      cpu #1 irq acknowledge/enable
6821      cpu #2 irq acknowledge/enable
6822      cpu #3 nmi acknowledge/enable
6823      if 0, halt CPU #2 and #3
6830      Watchdog reset?
7000-     custom IO chip parameters
7100      custom IO chip command (see machine/galaga.c for more details)
a000-a002 starfield scroll direction/speed (only bit 0 is significant)
a003-a005 starfield blink?
a007      flip screen

Interrupts:
CPU #1 IRQ mode 1
       NMI is triggered by the custom IO chip to signal the CPU to read/write
	       parameters
CPU #2 IRQ mode 1
CPU #3 NMI (@120Hz)

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

#include "driver.h"
#include "vidhrdw/generic.h"

extern unsigned char *digdug_sharedram;
READ_HANDLER( digdug_hiscore_print_r );
READ_HANDLER( digdug_sharedram_r );
WRITE_HANDLER( digdug_sharedram_w );
WRITE_HANDLER( digdug_interrupt_enable_1_w );
WRITE_HANDLER( digdug_interrupt_enable_2_w );
WRITE_HANDLER( digdug_interrupt_enable_3_w );
WRITE_HANDLER( digdug_halt_w );
READ_HANDLER( digdug_customio_r );
WRITE_HANDLER( digdug_customio_w );
READ_HANDLER( digdug_customio_data_r );
WRITE_HANDLER( digdug_customio_data_w );
INTERRUPT_GEN( digdug_interrupt_1 );
INTERRUPT_GEN( digdug_interrupt_2 );
INTERRUPT_GEN( digdug_interrupt_3 );
MACHINE_INIT( digdig );

WRITE_HANDLER( digdug_flipscreen_w );
extern unsigned char *digdug_vlatches;
WRITE_HANDLER( digdug_cpu_reset_w );
WRITE_HANDLER( digdug_vh_latch_w );
VIDEO_START( digdug );
VIDEO_UPDATE( digdug );
PALETTE_INIT( digdug );

WRITE_HANDLER( pengo_sound_w );
extern unsigned char *pengo_soundregs;



static MEMORY_READ_START( readmem_cpu1 )
	{ 0x0000, 0x3fff, MRA_ROM },
	{ 0x7000, 0x700f, digdug_customio_data_r },
	{ 0x7100, 0x7100, digdug_customio_r },
	{ 0x8000, 0x9fff, digdug_sharedram_r },
MEMORY_END

static MEMORY_READ_START( readmem_cpu2 )
	{ 0x0000, 0x1fff, MRA_ROM },
	{ 0x8000, 0x9fff, digdug_sharedram_r },
MEMORY_END

static MEMORY_READ_START( readmem_cpu3 )
	{ 0x0000, 0x0fff, MRA_ROM },
	{ 0x8000, 0x9fff, digdug_sharedram_r },
MEMORY_END

static MEMORY_WRITE_START( writemem_cpu1 )
	{ 0x0000, 0x3fff, MWA_ROM },
	{ 0x6820, 0x6820, digdug_interrupt_enable_1_w },
	{ 0x6821, 0x6821, digdug_interrupt_enable_2_w },
	{ 0x6822, 0x6822, digdug_interrupt_enable_3_w },
	{ 0x6823, 0x6823, digdug_halt_w },
        { 0xa007, 0xa007, digdug_flipscreen_w },
	{ 0x6825, 0x6827, MWA_NOP },
	{ 0x6830, 0x6830, watchdog_reset_w },
	{ 0x7000, 0x700f, digdug_customio_data_w },
	{ 0x7100, 0x7100, digdug_customio_w },
	{ 0x8000, 0x9fff, digdug_sharedram_w, &digdug_sharedram },
	{ 0x8000, 0x83ff, MWA_RAM, &videoram, &videoram_size },   /* dirtybuffer[] handling is not needed because */
	{ 0x8400, 0x87ff, MWA_RAM },	                          /* characters are redrawn every frame */
	{ 0x8b80, 0x8bff, MWA_RAM, &spriteram, &spriteram_size }, /* these three are here just to initialize */
	{ 0x9380, 0x93ff, MWA_RAM, &spriteram_2 },	          /* the pointers. The actual writes are */
	{ 0x9b80, 0x9bff, MWA_RAM, &spriteram_3 },                /* handled by digdug_sharedram_w() */
	{ 0xa000, 0xa00f, digdug_vh_latch_w, &digdug_vlatches },
MEMORY_END

static MEMORY_WRITE_START( writemem_cpu2 )
	{ 0x0000, 0x1fff, MWA_ROM },
	{ 0x6821, 0x6821, digdug_interrupt_enable_2_w },
	{ 0x6830, 0x6830, watchdog_reset_w },
	{ 0x8000, 0x9fff, digdug_sharedram_w },
	{ 0xa000, 0xa00f, digdug_vh_latch_w },
MEMORY_END

static MEMORY_WRITE_START( writemem_cpu3 )
	{ 0x0000, 0x0fff, MWA_ROM },
	{ 0x6800, 0x681f, pengo_sound_w, &pengo_soundregs },
	{ 0x6822, 0x6822, digdug_interrupt_enable_3_w },
	{ 0x8000, 0x9fff, digdug_sharedram_w },
MEMORY_END


/* input from the outside world */
INPUT_PORTS_START( digdug )
	PORT_START	/* DSW0 */
	PORT_DIPNAME( 0x07, 0x01, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_7C ) )
	/* TODO: bonus scores are different for 5 lives */
	PORT_DIPNAME( 0x38, 0x18, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x20, "10k 40k 40k" )
	PORT_DIPSETTING(    0x10, "10k 50k 50k" )
	PORT_DIPSETTING(    0x30, "20k 60k 60k" )
	PORT_DIPSETTING(    0x08, "20k 70k 70k" )
	PORT_DIPSETTING(    0x28, "10k 40k" )
	PORT_DIPSETTING(    0x18, "20k 60k" )
	PORT_DIPSETTING(    0x38, "10k" )
	PORT_DIPSETTING(    0x00, "None" )
	PORT_DIPNAME( 0xc0, 0x80, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "1" )
	PORT_DIPSETTING(    0x40, "2" )
	PORT_DIPSETTING(    0x80, "3" )
	PORT_DIPSETTING(    0xc0, "5" )

	PORT_START	/* DSW1 */
	PORT_DIPNAME( 0xc0, 0x00, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x20, 0x20, "Freeze" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, "Allow Continue" )
	PORT_DIPSETTING(    0x08, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, "Easy" )
	PORT_DIPSETTING(    0x02, "Medium" )
	PORT_DIPSETTING(    0x01, "Hard" )
	PORT_DIPSETTING(    0x03, "Hardest" )

	PORT_START	/* FAKE */
	/* The player inputs are not memory mapped, they are handled by an I/O chip. */
	/* These fake input ports are read by digdug_customio_data_r() */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT_IMPULSE( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1, 1 )
	PORT_BITX(0x20, IP_ACTIVE_LOW, IPT_BUTTON1, 0, IP_KEY_PREVIOUS, IP_JOY_PREVIOUS )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* FAKE */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT_IMPULSE( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL, 1 )
	PORT_BITX(0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL, 0, IP_KEY_PREVIOUS, IP_JOY_PREVIOUS )
	PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* FAKE */
	PORT_BIT_IMPULSE( 0x01, IP_ACTIVE_LOW, IPT_COIN1, 1 )
	PORT_BIT_IMPULSE( 0x02, IP_ACTIVE_LOW, IPT_COIN2, 1 )
	PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT_IMPULSE( 0x10, IP_ACTIVE_LOW, IPT_START1, 1 )
	PORT_BIT_IMPULSE( 0x20, IP_ACTIVE_LOW, IPT_START2, 1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
INPUT_PORTS_END

static struct GfxLayout charlayout1 =
{
	8,8,	/* 8*8 characters */
	128,	/* 128 characters */
	1,		/* 1 bit per pixel */
	{ 0 },	/* one bitplane */
	{ 7, 6, 5, 4, 3, 2, 1, 0 },
	{ 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 struct GfxLayout charlayout2 =
{
	8,8,	/* 8*8 characters */
	256,	/* 256 characters */
	2,	/* 2 bits per pixel */
	{ 0, 4 },      /* the two bitplanes for 4 pixels are packed into one byte */
	{ 8*8+0, 8*8+1, 8*8+2, 8*8+3, 0, 1, 2, 3 },   /* bits are packed in groups of four */
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },   /* characters are rotated 90 degrees */
	16*8	       /* every char takes 16 bytes */
};

static struct GfxLayout spritelayout =
{
	16,16,	        /* 16*16 sprites */
	256,	        /* 256 sprites */
	2,	        /* 2 bits per pixel */
	{ 0, 4 },	/* the two bitplanes for 4 pixels are packed into one byte */
	{ 0, 1, 2, 3, 8*8, 8*8+1, 8*8+2, 8*8+3, 16*8+0, 16*8+1, 16*8+2, 16*8+3,
			24*8+0, 24*8+1, 24*8+2, 24*8+3 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
			32*8, 33*8, 34*8, 35*8, 36*8, 37*8, 38*8, 39*8 },
	64*8	/* every sprite takes 64 bytes */
};


static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &charlayout1,            0,  8 },
	{ REGION_GFX2, 0, &spritelayout,         8*2, 64 },
	{ REGION_GFX3, 0, &charlayout2,   64*4 + 8*2, 64 },
	{ -1 } /* end of array */
};


static struct namco_interface namco_interface =
{
	3072000/32,	/* sample rate */
	3,			/* number of voices */
	100,		/* playback volume */
	REGION_SOUND1	/* memory region */
};



static MACHINE_DRIVER_START( digdug )

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, 3125000)	/* 3.125 MHz */
	MDRV_CPU_MEMORY(readmem_cpu1,writemem_cpu1)
	MDRV_CPU_VBLANK_INT(digdug_interrupt_1,1)

	MDRV_CPU_ADD(Z80, 3125000)	/* 3.125 MHz */
	MDRV_CPU_MEMORY(readmem_cpu2,writemem_cpu2)
	MDRV_CPU_VBLANK_INT(digdug_interrupt_2,1)

	MDRV_CPU_ADD(Z80, 3125000)	/* 3.125 MHz */
	MDRV_CPU_MEMORY(readmem_cpu3,writemem_cpu3)
	MDRV_CPU_VBLANK_INT(digdug_interrupt_3,2)

	MDRV_FRAMES_PER_SECOND( (18432000.0 / 2) / (576 * 264) )
	MDRV_VBLANK_DURATION(DEFAULT_60HZ_VBLANK_DURATION)
	MDRV_INTERLEAVE(100)	/* 100 CPU slices per frame - an high value to ensure proper */
							/* synchronization of the CPUs */
	MDRV_MACHINE_INIT(digdig)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(36*8, 28*8)
	MDRV_VISIBLE_AREA(0*8, 36*8-1, 0*8, 28*8-1)
	MDRV_GFXDECODE(gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(32)
	MDRV_COLORTABLE_LENGTH(8*2+64*4+64*4)

	MDRV_PALETTE_INIT(digdug)
	MDRV_VIDEO_START(digdug)
	MDRV_VIDEO_UPDATE(digdug)

	/* sound hardware */
	MDRV_SOUND_ADD(NAMCO, namco_interface)
MACHINE_DRIVER_END




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

  Game driver(s)

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

ROM_START( digdug )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code for the first CPU  */
	ROM_LOAD( "136007.101",   0x0000, 0x1000, 0xa80ec984 )
	ROM_LOAD( "136007.102",   0x1000, 0x1000, 0x559f00bd )
	ROM_LOAD( "136007.103",   0x2000, 0x1000, 0x8cbc6fe1 )
	ROM_LOAD( "dd1.4b",       0x3000, 0x1000, 0xd066f830 )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for the second CPU */
	ROM_LOAD( "dd1.5b",       0x0000, 0x1000, 0x6687933b )
	ROM_LOAD( "dd1.6b",       0x1000, 0x1000, 0x843d857f )

	ROM_REGION( 0x10000, REGION_CPU3, 0 )	/* 64k for the third CPU  */
	ROM_LOAD( "136007.107",   0x0000, 0x1000, 0xa41bce72 )

	ROM_REGION( 0x1000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "dd1.9",        0x0000, 0x0800, 0xf14a6fe1 )

	ROM_REGION( 0x4000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.116",   0x0000, 0x1000, 0xe22957c8 )
	ROM_LOAD( "dd1.14",       0x1000, 0x1000, 0x2829ec99 )
	ROM_LOAD( "136007.118",   0x2000, 0x1000, 0x458499e9 )
	ROM_LOAD( "136007.119",   0x3000, 0x1000, 0xc58252a0 )

	ROM_REGION( 0x1000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "dd1.11",       0x0000, 0x1000, 0x7b383983 )

	ROM_REGION( 0x1000, REGION_GFX4, 0 ) /* 4k for the playfield graphics */
	ROM_LOAD( "dd1.10b",      0x0000, 0x1000, 0x2cf399c2 )

	ROM_REGION( 0x0220, REGION_PROMS, 0 )
	ROM_LOAD( "digdug.5n",    0x0000, 0x0020, 0x4cb9da99 )
	ROM_LOAD( "digdug.1c",    0x0020, 0x0100, 0x00c7c419 )
	ROM_LOAD( "digdug.2n",    0x0120, 0x0100, 0xe9b3e08e )

	ROM_REGION( 0x0100, REGION_SOUND1, 0 )	/* sound prom */
	ROM_LOAD( "digdug.spr",   0x0000, 0x0100, 0x7a2815b4 )
ROM_END

ROM_START( digdugb )
	ROM_REGION( 0x10000, REGION_CPU1, 0 ) /* 64k for code for the first CPU  */
	ROM_LOAD( "dd1a.1",       0x0000, 0x1000, 0xb9198079 )
	ROM_LOAD( "dd1a.2",       0x1000, 0x1000, 0xb2acbe49 )
	ROM_LOAD( "dd1a.3",       0x2000, 0x1000, 0xd6407b49 )
	ROM_LOAD( "dd1a.4",       0x3000, 0x1000, 0xf4cebc16 )

	ROM_REGION( 0x10000, REGION_CPU2, 0 ) /* 64k for the second CPU */
	ROM_LOAD( "dd1a.5",       0x0000, 0x1000, 0x370ef9b4 )
	ROM_LOAD( "dd1a.6",       0x1000, 0x1000, 0x361eeb71 )

	ROM_REGION( 0x10000, REGION_CPU3, 0 ) /* 64k for the third CPU  */
	ROM_LOAD( "136007.107",   0x0000, 0x1000, 0xa41bce72 )

	ROM_REGION( 0x1000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "dd1.9",        0x0000, 0x0800, 0xf14a6fe1 )

	ROM_REGION( 0x4000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.116",   0x0000, 0x1000, 0xe22957c8 )
	ROM_LOAD( "dd1.14",       0x1000, 0x1000, 0x2829ec99 )
	ROM_LOAD( "136007.118",   0x2000, 0x1000, 0x458499e9 )
	ROM_LOAD( "136007.119",   0x3000, 0x1000, 0xc58252a0 )

	ROM_REGION( 0x1000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "dd1.11",       0x0000, 0x1000, 0x7b383983 )

	ROM_REGION( 0x1000, REGION_GFX4, 0 ) /* 4k for the playfield graphics */
	ROM_LOAD( "dd1.10b",      0x0000, 0x1000, 0x2cf399c2 )

	ROM_REGION( 0x0220, REGION_PROMS, 0 )
	ROM_LOAD( "digdug.5n",    0x0000, 0x0020, 0x4cb9da99 )
	ROM_LOAD( "digdug.1c",    0x0020, 0x0100, 0x00c7c419 )
	ROM_LOAD( "digdug.2n",    0x0120, 0x0100, 0xe9b3e08e )

	ROM_REGION( 0x0100, REGION_SOUND1, 0 )	/* sound prom */
	ROM_LOAD( "digdug.spr",   0x0000, 0x0100, 0x7a2815b4 )
ROM_END

ROM_START( digdugat )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code for the first CPU  */
	ROM_LOAD( "201.007",      0x0000, 0x1000, 0x23d0b1a4 )
	ROM_LOAD( "202.007",      0x1000, 0x1000, 0x5453dc1f )
	ROM_LOAD( "203.007",      0x2000, 0x1000, 0xc9077dfa )
	ROM_LOAD( "204.007",      0x3000, 0x1000, 0xa8fc8eac )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for the second CPU */
	ROM_LOAD( "205.007",      0x0000, 0x1000, 0x5ba385c5 )
	ROM_LOAD( "206.007",      0x1000, 0x1000, 0x382b4011 )

	ROM_REGION( 0x10000, REGION_CPU3, 0 )	/* 64k for the third CPU  */
	ROM_LOAD( "136007.107",   0x0000, 0x1000, 0xa41bce72 )

	ROM_REGION( 0x1000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.108",   0x0000, 0x0800, 0x3d24a3af )

	ROM_REGION( 0x4000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.116",   0x0000, 0x1000, 0xe22957c8 )
	ROM_LOAD( "136007.117",   0x1000, 0x1000, 0xa3bbfd85 )
	ROM_LOAD( "136007.118",   0x2000, 0x1000, 0x458499e9 )
	ROM_LOAD( "136007.119",   0x3000, 0x1000, 0xc58252a0 )

	ROM_REGION( 0x1000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.115",   0x0000, 0x1000, 0x754539be )

	ROM_REGION( 0x1000, REGION_GFX4, 0 )	/* 4k for the playfield graphics */
	ROM_LOAD( "136007.114",   0x0000, 0x1000, 0xd6822397 )

	ROM_REGION( 0x0220, REGION_PROMS, 0 )
	ROM_LOAD( "digdug.5n",    0x0000, 0x0020, 0x4cb9da99 )
	ROM_LOAD( "digdug.1c",    0x0020, 0x0100, 0x00c7c419 )
	ROM_LOAD( "digdug.2n",    0x0120, 0x0100, 0xe9b3e08e )

	ROM_REGION( 0x0100, REGION_SOUND1, 0 )	/* sound prom */
	ROM_LOAD( "digdug.spr",   0x0000, 0x0100, 0x7a2815b4 )
ROM_END

ROM_START( digduga1 )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code for the first CPU  */
	ROM_LOAD( "136007.101",   0x0000, 0x1000, 0xb9198079 )
	ROM_LOAD( "136007.102",   0x1000, 0x1000, 0xb2acbe49 )
	ROM_LOAD( "136007.103",   0x2000, 0x1000, 0xd6407b49 )
	ROM_LOAD( "136007.104",   0x3000, 0x1000, 0xb3ad42c3 )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for the second CPU */
	ROM_LOAD( "136007.105",   0x0000, 0x1000, 0x0a2aef4a )
	ROM_LOAD( "136007.106",   0x1000, 0x1000, 0xa2876d6e )

	ROM_REGION( 0x10000, REGION_CPU3, 0 )	/* 64k for the third CPU  */
	ROM_LOAD( "136007.107",   0x0000, 0x1000, 0xa41bce72 )

	ROM_REGION( 0x1000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.108",   0x0000, 0x0800, 0x3d24a3af )

	ROM_REGION( 0x4000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.116",   0x0000, 0x1000, 0xe22957c8 )
	ROM_LOAD( "136007.117",   0x1000, 0x1000, 0xa3bbfd85 )
	ROM_LOAD( "136007.118",   0x2000, 0x1000, 0x458499e9 )
	ROM_LOAD( "136007.119",   0x3000, 0x1000, 0xc58252a0 )

	ROM_REGION( 0x1000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.115",   0x0000, 0x1000, 0x754539be )

	ROM_REGION( 0x1000, REGION_GFX4, 0 )	/* 4k for the playfield graphics */
	ROM_LOAD( "136007.114",   0x0000, 0x1000, 0xd6822397 )

	ROM_REGION( 0x0220, REGION_PROMS, 0 )
	ROM_LOAD( "digdug.5n",    0x0000, 0x0020, 0x4cb9da99 )
	ROM_LOAD( "digdug.1c",    0x0020, 0x0100, 0x00c7c419 )
	ROM_LOAD( "digdug.2n",    0x0120, 0x0100, 0xe9b3e08e )

	ROM_REGION( 0x0100, REGION_SOUND1, 0 )	/* sound prom */
	ROM_LOAD( "digdug.spr",   0x0000, 0x0100, 0x7a2815b4 )
ROM_END

ROM_START( dzigzag )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code for the first CPU  */
	ROM_LOAD( "136007.101",   0x0000, 0x1000, 0xb9198079 )
	ROM_LOAD( "136007.102",   0x1000, 0x1000, 0xb2acbe49 )
	ROM_LOAD( "136007.103",   0x2000, 0x1000, 0xd6407b49 )
	ROM_LOAD( "zigzag4",      0x3000, 0x1000, 0xda20d2f6 )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for the second CPU */
	ROM_LOAD( "zigzag5",      0x0000, 0x2000, 0xf803c748 )

	ROM_REGION( 0x10000, REGION_CPU3, 0 )	/* 64k for the third CPU  */
	ROM_LOAD( "136007.107",   0x0000, 0x1000, 0xa41bce72 )

	ROM_REGION( 0x10000, REGION_CPU4, 0 )	/* 64k for a Z80 which emulates the custom I/O chip (not used) */
	ROM_LOAD( "zigzag7",      0x0000, 0x1000, 0x24c3510c )

	ROM_REGION( 0x1000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "zigzag8",      0x0000, 0x0800, 0x86120541 )

	ROM_REGION( 0x4000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "136007.116",   0x0000, 0x1000, 0xe22957c8 )
	ROM_LOAD( "zigzag12",     0x1000, 0x1000, 0x386a0956 )
	ROM_LOAD( "zigzag13",     0x2000, 0x1000, 0x69f6e395 )
	ROM_LOAD( "136007.119",   0x3000, 0x1000, 0xc58252a0 )

	ROM_REGION( 0x1000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "dd1.11",       0x0000, 0x1000, 0x7b383983 )

	ROM_REGION( 0x1000, REGION_GFX4, 0 ) /* 4k for the playfield graphics */
	ROM_LOAD( "dd1.10b",      0x0000, 0x1000, 0x2cf399c2 )

	ROM_REGION( 0x0220, REGION_PROMS, 0 )
	ROM_LOAD( "digdug.5n",    0x0000, 0x0020, 0x4cb9da99 )
	ROM_LOAD( "digdug.1c",    0x0020, 0x0100, 0x00c7c419 )
	ROM_LOAD( "digdug.2n",    0x0120, 0x0100, 0xe9b3e08e )

	ROM_REGION( 0x0100, REGION_SOUND1, 0 )	/* sound prom */
	ROM_LOAD( "digdug.spr",   0x0000, 0x0100, 0x7a2815b4 )
ROM_END



GAME( 1982, digdug,   0,      digdug, digdug, 0, ROT90, "Namco", "Dig Dug (set 1)" )
GAME( 1982, digdugb,  digdug, digdug, digdug, 0, ROT90, "Namco", "Dig Dug (set 2)" )
GAME( 1982, digdugat, digdug, digdug, digdug, 0, ROT90, "[Namco] (Atari license)", "Dig Dug (Atari, rev 2)" )
GAME( 1982, digduga1, digdug, digdug, digdug, 0, ROT90, "[Namco] (Atari license)", "Dig Dug (Atari, rev 1)" )
GAME( 1982, dzigzag,  digdug, digdug, digdug, 0, ROT90, "bootleg", "Zig Zag (Dig Dug hardware)" )
