/****************************************************************************
10 Yard Fight Driver.

L Taylor
J Clegg

Loosely based on the Kung Fu Master driver.

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

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

extern UINT8 *yard_scroll_x_low;
extern UINT8 *yard_scroll_x_high;
extern UINT8 *yard_scroll_y_low;
extern UINT8 *yard_score_panel_disabled;

extern WRITE8_HANDLER( yard_videoram_w );
extern WRITE8_HANDLER( yard_scroll_panel_w );

extern PALETTE_INIT( yard );
extern VIDEO_START( yard );
extern VIDEO_UPDATE( yard );

/* Read/Write Handlers */

static WRITE8_HANDLER( yard_flipscreen_w )
{
	flip_screen_set((data & 0x01) ^ (~readinputport(4) & 0x01));

	coin_counter_w(0, data & 0x02);
	coin_counter_w(1, data & 0x20);
}

/* Memory Map */

static ADDRESS_MAP_START( yard_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x5fff) AM_ROM
	AM_RANGE(0x8000, 0x8fff) AM_RAM AM_WRITE(yard_videoram_w) AM_BASE(&videoram)
	AM_RANGE(0x9000, 0x9fff) AM_WRITE(yard_scroll_panel_w)
	AM_RANGE(0xc820, 0xc87f) AM_RAM AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0xa000, 0xa000) AM_RAM AM_BASE(&yard_scroll_x_low)
	AM_RANGE(0xa200, 0xa200) AM_RAM AM_BASE(&yard_scroll_x_high)
	AM_RANGE(0xa400, 0xa400) AM_RAM AM_BASE(&yard_scroll_y_low)
	AM_RANGE(0xa800, 0xa800) AM_RAM AM_BASE(&yard_score_panel_disabled)
	AM_RANGE(0xd000, 0xd000) AM_READWRITE(input_port_0_r, irem_sound_cmd_w)
	AM_RANGE(0xd001, 0xd001) AM_READWRITE(input_port_1_r, yard_flipscreen_w)
	AM_RANGE(0xd002, 0xd002) AM_READ(input_port_2_r)
	AM_RANGE(0xd003, 0xd003) AM_READ(input_port_3_r)
	AM_RANGE(0xd004, 0xd004) AM_READ(input_port_4_r)
	AM_RANGE(0xe000, 0xefff) AM_RAM
ADDRESS_MAP_END

/* Input Ports */

INPUT_PORTS_START( yard )
	PORT_START_TAG("IN0")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_IMPULSE(19) /* coin input must be active for 19 frames to be consistently recognized */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START_TAG("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT  ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN  ) PORT_8WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP    ) PORT_8WAY
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 )

	PORT_START_TAG("IN2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT  ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN  ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP    ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_COCKTAIL

	PORT_START_TAG("DSW1")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(	0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Defensive Man Pause" )
	PORT_DIPSETTING(	0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(	0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x0c, 0x0c, "Time Reduced by Ball Dead" )
	PORT_DIPSETTING(    0x0c, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x08, "x1.3" )
	PORT_DIPSETTING(    0x04, "x1.5" )
	PORT_DIPSETTING(    0x00, "x1.8" )
	PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 6C_1C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x70, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x50, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Free_Play ) )
/*

    Coin Mode setting doesn't work, because PORT_DIPCONDITION can't be used on PORT_DIPNAME...

    // coin mode 1
    PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coinage ) )      PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0xa0, DEF_STR( 6C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0xb0, DEF_STR( 5C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0xc0, DEF_STR( 4C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0xd0, DEF_STR( 3C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0xe0, DEF_STR( 2C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0x70, DEF_STR( 1C_2C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0x60, DEF_STR( 1C_3C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0x50, DEF_STR( 1C_4C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0x40, DEF_STR( 1C_5C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0x30, DEF_STR( 1C_6C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    PORT_DIPSETTING(    0x00, DEF_STR( Free_Play ) )    PORT_DIPCONDITION(4, 0x04, PORTCOND_NOTEQUALS, 0x00)
    // coin mode 2
    PORT_DIPNAME( 0x30, 0x30, DEF_STR( Coin_A ) )       PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x10, DEF_STR( 3C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x20, DEF_STR( 2C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x30, DEF_STR( 1C_1C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x00, DEF_STR( Free_Play ) )    PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPNAME( 0xc0, 0xc0, DEF_STR( Coin_B ) )       PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x80, DEF_STR( 1C_3C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x40, DEF_STR( 1C_5C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
    PORT_DIPSETTING(    0x00, DEF_STR( 1C_6C ) )        PORT_DIPCONDITION(4, 0x04, PORTCOND_EQUALS, 0x00)
*/

	PORT_START_TAG("DSW2")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x04, 0x04, "Coin Mode" )
	PORT_DIPSETTING(    0x04, "Mode 1" )
	PORT_DIPSETTING(    0x00, "Mode 2" )
	PORT_DIPNAME( 0x08, 0x08, "Slow Motion" )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Stop Mode" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Level_Select ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Invulnerability" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_SERVICE( 0x80, IP_ACTIVE_LOW )
INPUT_PORTS_END

INPUT_PORTS_START( vsyard )
	PORT_INCLUDE(yard)

	PORT_MODIFY("DSW1")
	PORT_DIPNAME( 0x01, 0x00, "Allow Continue (Vs. Mode)" )
	PORT_DIPSETTING( 0x01, DEF_STR( No ) )
	PORT_DIPSETTING( 0x00, DEF_STR( Yes ) )
INPUT_PORTS_END

/* Graphics Layouts */

static struct GfxLayout charlayout =
{
	8, 8,
	RGN_FRAC(1,3),
	3,
	{ RGN_FRAC(2,3), RGN_FRAC(1,3), RGN_FRAC(0,3) },
	{ 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 struct GfxLayout spritelayout =
{
	16, 16,
	RGN_FRAC(1,3),
	3,
	{ RGN_FRAC(2,3), RGN_FRAC(1,3), RGN_FRAC(0,3) },
	{ 0, 1, 2, 3, 4, 5, 6, 7,
	  16*8+0, 16*8+1, 16*8+2, 16*8+3, 16*8+4, 16*8+5, 16*8+6, 16*8+7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
	  8*8, 9*8, 10*8, 11*8, 12*8, 13*8, 14*8, 15*8 },
	32*8
};

/* Graphics Decode Information */

static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &charlayout,      0, 32 },	/* use colors 0-255 */
	{ REGION_GFX2, 0, &spritelayout, 32*8, 32 },	/* use colors 256-271 with lookup table */
	{ -1 }											/* bitmapped radar uses colors 272-527 */
};

/* Machine Driver */

static MACHINE_DRIVER_START( yard )
	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, 4000000)	/* ??? */
	MDRV_CPU_PROGRAM_MAP(yard_map, 0)
	MDRV_CPU_VBLANK_INT(irq0_line_hold, 1)

	MDRV_FRAMES_PER_SECOND(57)
	MDRV_VBLANK_DURATION(1790)
	/* accurate frequency, measured on a Moon Patrol board, is 56.75Hz.
       the Lode Runner manual (similar but different hardware)
       talks about 55Hz and 1790ms vblank duration. */

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_VISIBLE_AREA(0*8, 32*8-1, 1*8, 31*8-1)
	MDRV_GFXDECODE(gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(256+16+256)
	MDRV_COLORTABLE_LENGTH(32*8+32*8)

	MDRV_PALETTE_INIT(yard)
	MDRV_VIDEO_START(yard)
	MDRV_VIDEO_UPDATE(yard)

	/* sound hardware */
	MDRV_IMPORT_FROM(irem_audio)
MACHINE_DRIVER_END

/* ROMs */

ROM_START( yard )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code */
	ROM_LOAD( "yf-a.3p",      0x0000, 0x2000, CRC(4586114f) SHA1(a31c68770e7a7eed805c5ba46af302c2895e3cee) )
	ROM_LOAD( "yf-a.3n",      0x2000, 0x2000, CRC(947fa760) SHA1(bd6c2ee6e6800b063b81dbdd9fc929120019439d) )
	ROM_LOAD( "yf-a.3m",      0x4000, 0x2000, CRC(d4975633) SHA1(84a506ae680a9dd26ef6f33880400e965ccf8260) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for sound cpu */
	ROM_LOAD( "yf-s.3b",      0x8000, 0x2000, CRC(0392a60c) SHA1(68030504eafc58db250099edd3c3323bdb9eff6b) )
	ROM_LOAD( "yf-s.1b",      0xa000, 0x2000, CRC(6588f41a) SHA1(209305efc68171886427216b9a0b37333f40daa8) )
	ROM_LOAD( "yf-s.3a",      0xc000, 0x2000, CRC(bd054e44) SHA1(f10c32c70d60680229fc0891d0e1308015fa69d6) )
	ROM_LOAD( "yf-s.1a",      0xe000, 0x2000, CRC(2490d4c3) SHA1(e4da7b01e8ad075b7e3c8beb6668faff72db9aa2) )

	ROM_REGION( 0x06000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "yf-a.3e",      0x00000, 0x2000, CRC(77e9e9cc) SHA1(90b0226fc125713dbee2804aeceeb5aa2c8e275e) )	/* chars */
	ROM_LOAD( "yf-a.3d",      0x02000, 0x2000, CRC(854d5ff4) SHA1(9ba09bfabf159facb57faecfe73a6258fa48d152) )
	ROM_LOAD( "yf-a.3c",      0x04000, 0x2000, CRC(0cd8ffad) SHA1(bd1262de3823c34f7394b718477fb5bc58a6e293) )

	ROM_REGION( 0x0c000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "yf-b.5b",      0x00000, 0x2000, CRC(1299ae30) SHA1(07d47f827d8bc78a41011ec02ab64036fb8a7a18) )	/* sprites */
	ROM_LOAD( "yf-b.5c",      0x02000, 0x2000, CRC(8708b888) SHA1(8c4f305a339f23ec8ed40dfd72fac0f62ee65378) )
	ROM_LOAD( "yf-b.5f",      0x04000, 0x2000, CRC(d9bb8ab8) SHA1(1325308b4c85355298fec4aa3e5fec1b4b13ad86) )
	ROM_LOAD( "yf-b.5e",      0x06000, 0x2000, CRC(47077e8d) SHA1(5f78b15fb360e9926ef11841d5d86f2bd9af04d1) )
	ROM_LOAD( "yf-b.5j",      0x08000, 0x2000, CRC(713ef31f) SHA1(b48df9ed4f26fded3c7eaac3a52b580b2dd60477) )
	ROM_LOAD( "yf-b.5k",      0x0a000, 0x2000, CRC(f49651cc) SHA1(5b87d7360bcd5883ec265b2a01a3e02e10a85345) )

	ROM_REGION( 0x0520, REGION_PROMS, 0 )
	ROM_LOAD( "yard.1c",      0x0000, 0x0100, CRC(08fa5103) SHA1(98af48dafbbaa42f58232bf74ccbf5da41723e71) ) /* chars palette low 4 bits */
	ROM_LOAD( "yard.1d",      0x0100, 0x0100, CRC(7c04994c) SHA1(790bf1616335b9df4943cffcafa48d8e8aee009e) ) /* chars palette high 4 bits */
	ROM_LOAD( "yard.1f",      0x0200, 0x0020, CRC(b8554da5) SHA1(963ca815b5f791b8a7b0937a5d392d5203049eb3) ) /* sprites palette */
	ROM_LOAD( "yard.2h",      0x0220, 0x0100, CRC(e1cdfb06) SHA1(a8cc3456cfc272e3faac80370b2298d8e1f8c2fe) ) /* sprites lookup table */
	ROM_LOAD( "yard.2n",      0x0320, 0x0100, CRC(cd85b646) SHA1(5268db705006058eec308afe474f4df3c15465bb) ) /* radar palette low 4 bits */
	ROM_LOAD( "yard.2m",      0x0420, 0x0100, CRC(45384397) SHA1(e4c662ee81aef63efd8b4a45f85c4a78dc2d419e) ) /* radar palette high 4 bits */
ROM_END

ROM_START( vsyard )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code */
	ROM_LOAD( "a.3p",         0x0000, 0x2000, CRC(1edac08f) SHA1(c6a3290e9dba663dccf0613853abfab8e912477d) )
	ROM_LOAD( "vyf-a.3m",     0x2000, 0x2000, CRC(3b9330f8) SHA1(b35fe72cf724cfb887906060bbcf40b0c896ccf0) )
	ROM_LOAD( "a.3m",         0x4000, 0x2000, CRC(cf783dad) SHA1(0b1b875ac65ba90c92ca06d0aa01c477b7427322) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for sound cpu */
	ROM_LOAD( "yf-s.3b",      0x8000, 0x2000, CRC(0392a60c) SHA1(68030504eafc58db250099edd3c3323bdb9eff6b) )
	ROM_LOAD( "yf-s.1b",      0xa000, 0x2000, CRC(6588f41a) SHA1(209305efc68171886427216b9a0b37333f40daa8) )
	ROM_LOAD( "yf-s.3a",      0xc000, 0x2000, CRC(bd054e44) SHA1(f10c32c70d60680229fc0891d0e1308015fa69d6) )
	ROM_LOAD( "yf-s.1a",      0xe000, 0x2000, CRC(2490d4c3) SHA1(e4da7b01e8ad075b7e3c8beb6668faff72db9aa2) )

	ROM_REGION( 0x06000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "vyf-a.3a",     0x00000, 0x2000, CRC(354d7330) SHA1(0dac87e502d5e9089c4e5ca87c7626940a17e9b2) )	/* chars */
	ROM_LOAD( "vyf-a.3c",     0x02000, 0x2000, CRC(f48eedca) SHA1(6aef3208de8b1dd4078de20c0b5ce96219c79d40) )
	ROM_LOAD( "vyf-a.3d",     0x04000, 0x2000, CRC(7d1b4d93) SHA1(9389de1230b93f529c492af6fb911c00280cae8a) )

	ROM_REGION( 0x0c000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "yf-b.5b",      0x00000, 0x2000, CRC(1299ae30) SHA1(07d47f827d8bc78a41011ec02ab64036fb8a7a18) )	/* sprites */
	ROM_LOAD( "yf-b.5c",      0x02000, 0x2000, CRC(8708b888) SHA1(8c4f305a339f23ec8ed40dfd72fac0f62ee65378) )
	ROM_LOAD( "yf-b.5f",      0x04000, 0x2000, CRC(d9bb8ab8) SHA1(1325308b4c85355298fec4aa3e5fec1b4b13ad86) )
	ROM_LOAD( "yf-b.5e",      0x06000, 0x2000, CRC(47077e8d) SHA1(5f78b15fb360e9926ef11841d5d86f2bd9af04d1) )
	ROM_LOAD( "yf-b.5j",      0x08000, 0x2000, CRC(713ef31f) SHA1(b48df9ed4f26fded3c7eaac3a52b580b2dd60477) )
	ROM_LOAD( "yf-b.5k",      0x0a000, 0x2000, CRC(f49651cc) SHA1(5b87d7360bcd5883ec265b2a01a3e02e10a85345) )

	ROM_REGION( 0x0520, REGION_PROMS, 0 )
	ROM_LOAD( "yard.1c",      0x0000, 0x0100, CRC(08fa5103) SHA1(98af48dafbbaa42f58232bf74ccbf5da41723e71) ) /* chars palette low 4 bits */
	ROM_LOAD( "yard.1d",      0x0100, 0x0100, CRC(7c04994c) SHA1(790bf1616335b9df4943cffcafa48d8e8aee009e) ) /* chars palette high 4 bits */
	ROM_LOAD( "yard.1f",      0x0200, 0x0020, CRC(b8554da5) SHA1(963ca815b5f791b8a7b0937a5d392d5203049eb3) ) /* sprites palette */
	ROM_LOAD( "yard.2h",      0x0220, 0x0100, CRC(e1cdfb06) SHA1(a8cc3456cfc272e3faac80370b2298d8e1f8c2fe) ) /* sprites lookup table */
	ROM_LOAD( "yard.2n",      0x0320, 0x0100, CRC(cd85b646) SHA1(5268db705006058eec308afe474f4df3c15465bb) ) /* radar palette low 4 bits */
	ROM_LOAD( "yard.2m",      0x0420, 0x0100, CRC(45384397) SHA1(e4c662ee81aef63efd8b4a45f85c4a78dc2d419e) ) /* radar palette high 4 bits */
ROM_END

ROM_START( vsyard2 )
	ROM_REGION( 0x10000, REGION_CPU1, 0 )	/* 64k for code */
	ROM_LOAD( "vyf-a.3n",     0x0000, 0x2000, CRC(418e01fc) SHA1(56a6515735cd88ec803e24574a28aef823a5d36b) )
	ROM_LOAD( "vyf-a.3m",     0x2000, 0x2000, CRC(3b9330f8) SHA1(b35fe72cf724cfb887906060bbcf40b0c896ccf0) )
	ROM_LOAD( "vyf-a.3k",     0x4000, 0x2000, CRC(a0ec15bb) SHA1(a5ce9341e9d05e33c025ac62a27faf738c88326e) )

	ROM_REGION( 0x10000, REGION_CPU2, 0 )	/* 64k for sound cpu */
	ROM_LOAD( "yf-s.3b",      0x8000, 0x2000, CRC(0392a60c) SHA1(68030504eafc58db250099edd3c3323bdb9eff6b) )
	ROM_LOAD( "yf-s.1b",      0xa000, 0x2000, CRC(6588f41a) SHA1(209305efc68171886427216b9a0b37333f40daa8) )
	ROM_LOAD( "yf-s.3a",      0xc000, 0x2000, CRC(bd054e44) SHA1(f10c32c70d60680229fc0891d0e1308015fa69d6) )
	ROM_LOAD( "yf-s.1a",      0xe000, 0x2000, CRC(2490d4c3) SHA1(e4da7b01e8ad075b7e3c8beb6668faff72db9aa2) )

	ROM_REGION( 0x06000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "vyf-a.3a",     0x00000, 0x2000, CRC(354d7330) SHA1(0dac87e502d5e9089c4e5ca87c7626940a17e9b2) )	/* chars */
	ROM_LOAD( "vyf-a.3c",     0x02000, 0x2000, CRC(f48eedca) SHA1(6aef3208de8b1dd4078de20c0b5ce96219c79d40) )
	ROM_LOAD( "vyf-a.3d",     0x04000, 0x2000, CRC(7d1b4d93) SHA1(9389de1230b93f529c492af6fb911c00280cae8a) )

	ROM_REGION( 0x0c000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "yf-b.5b",      0x00000, 0x2000, CRC(1299ae30) SHA1(07d47f827d8bc78a41011ec02ab64036fb8a7a18) )	/* sprites */
	ROM_LOAD( "yf-b.5c",      0x02000, 0x2000, CRC(8708b888) SHA1(8c4f305a339f23ec8ed40dfd72fac0f62ee65378) )
	ROM_LOAD( "yf-b.5f",      0x04000, 0x2000, CRC(d9bb8ab8) SHA1(1325308b4c85355298fec4aa3e5fec1b4b13ad86) )
	ROM_LOAD( "yf-b.5e",      0x06000, 0x2000, CRC(47077e8d) SHA1(5f78b15fb360e9926ef11841d5d86f2bd9af04d1) )
	ROM_LOAD( "yf-b.5j",      0x08000, 0x2000, CRC(713ef31f) SHA1(b48df9ed4f26fded3c7eaac3a52b580b2dd60477) )
	ROM_LOAD( "yf-b.5k",      0x0a000, 0x2000, CRC(f49651cc) SHA1(5b87d7360bcd5883ec265b2a01a3e02e10a85345) )

	ROM_REGION( 0x0520, REGION_PROMS, 0 )
	ROM_LOAD( "yard.1c",      0x0000, 0x0100, CRC(08fa5103) SHA1(98af48dafbbaa42f58232bf74ccbf5da41723e71) ) /* chars palette low 4 bits */
	ROM_LOAD( "yard.1d",      0x0100, 0x0100, CRC(7c04994c) SHA1(790bf1616335b9df4943cffcafa48d8e8aee009e) ) /* chars palette high 4 bits */
	ROM_LOAD( "yard.1f",      0x0200, 0x0020, CRC(b8554da5) SHA1(963ca815b5f791b8a7b0937a5d392d5203049eb3) ) /* sprites palette */
	ROM_LOAD( "yard.2h",      0x0220, 0x0100, CRC(e1cdfb06) SHA1(a8cc3456cfc272e3faac80370b2298d8e1f8c2fe) ) /* sprites lookup table */
	ROM_LOAD( "yard.2n",      0x0320, 0x0100, CRC(cd85b646) SHA1(5268db705006058eec308afe474f4df3c15465bb) ) /* radar palette low 4 bits */
	ROM_LOAD( "yard.2m",      0x0420, 0x0100, CRC(45384397) SHA1(e4c662ee81aef63efd8b4a45f85c4a78dc2d419e) ) /* radar palette high 4 bits */
ROM_END

/* Game Drivers */

GAME( 1983, yard,    0,    yard, yard,   0, ROT0, "Irem", "10-Yard Fight (Japan)" )
GAME( 1984, vsyard,  yard, yard, vsyard, 0, ROT0, "Irem", "Vs 10-Yard Fight (World, 11/05/84)" )
GAME( 1984, vsyard2, yard, yard, vsyard, 0, ROT0, "Irem", "Vs 10-Yard Fight (Japan)" )
