// license:BSD-3-Clause
// copyright-holders:Mirko Buffoni, Couriersud
/***************************************************************************

    IronHorse

    driver by Mirko Buffoni

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

#include "emu.h"
#include "includes/ironhors.h"
#include "includes/konamipt.h"

#include "cpu/m6809/m6809.h"
#include "cpu/z80/z80.h"
#include "sound/2203intf.h"
#include "screen.h"
#include "speaker.h"


/*************************************
 *
 *  Memory handlers
 *
 *************************************/

/* straight copied from gberet.c  and adapted */
TIMER_DEVICE_CALLBACK_MEMBER(ironhors_state::interrupt_tick)
{
	uint8_t ticks_mask = ~m_interrupt_ticks & (m_interrupt_ticks + 1); // 0->1
	m_interrupt_ticks++;

	// NMI on d0
	if (ticks_mask & m_interrupt_mask & 1)
		m_maincpu->set_input_line(INPUT_LINE_NMI, ASSERT_LINE);

	// IRQ on d4
	if (ticks_mask & m_interrupt_mask<<2 & 16)
		m_maincpu->set_input_line(M6809_FIRQ_LINE, ASSERT_LINE);
}

WRITE8_MEMBER(ironhors_state::irq_ctrl_w)
{
	/* bits 0/1/2 = interrupt enable */
	uint8_t ack_mask = ~data & m_interrupt_mask; // 1->0

	if (ack_mask & 1)
		m_maincpu->set_input_line(INPUT_LINE_NMI, CLEAR_LINE);

	if (ack_mask & 6)
		m_maincpu->set_input_line(M6809_FIRQ_LINE, CLEAR_LINE);

	m_interrupt_mask = data & 7;
}

WRITE8_MEMBER(ironhors_state::sh_irqtrigger_w)
{
	m_soundcpu->set_input_line_and_vector(0, HOLD_LINE, 0xff);
}

WRITE8_MEMBER(ironhors_state::filter_w)
{
	m_disc_ih->write(space, NODE_11, (data & 0x04) >> 2);
	m_disc_ih->write(space, NODE_12, (data & 0x02) >> 1);
	m_disc_ih->write(space, NODE_13, (data & 0x01) >> 0);
}

/*************************************
 *
 *  Address maps
 *
 *************************************/

ADDRESS_MAP_START(ironhors_state::master_map)
	AM_RANGE(0x0000, 0x0002) AM_RAM
	AM_RANGE(0x0003, 0x0003) AM_RAM_WRITE(charbank_w)
	AM_RANGE(0x0004, 0x0004) AM_WRITE(irq_ctrl_w)
	AM_RANGE(0x0005, 0x001f) AM_RAM
	AM_RANGE(0x0020, 0x003f) AM_RAM AM_SHARE("scroll")
	AM_RANGE(0x0040, 0x005f) AM_RAM
	AM_RANGE(0x0060, 0x00df) AM_RAM
	AM_RANGE(0x0800, 0x0800) AM_DEVWRITE("soundlatch", generic_latch_8_device, write)
	AM_RANGE(0x0900, 0x0900) AM_READ_PORT("DSW3") AM_WRITE(sh_irqtrigger_w)
	AM_RANGE(0x0a00, 0x0a00) AM_READ_PORT("DSW2") AM_WRITE(palettebank_w)
	AM_RANGE(0x0b00, 0x0b00) AM_READ_PORT("DSW1") AM_WRITE(flipscreen_w)
	AM_RANGE(0x0b01, 0x0b01) AM_READ_PORT("P2")
	AM_RANGE(0x0b02, 0x0b02) AM_READ_PORT("P1")
	AM_RANGE(0x0b03, 0x0b03) AM_READ_PORT("SYSTEM")
	AM_RANGE(0x1800, 0x1800) AM_WRITENOP // ???
	AM_RANGE(0x1a00, 0x1a01) AM_WRITENOP // ???
	AM_RANGE(0x1c00, 0x1dff) AM_WRITENOP // ???
	AM_RANGE(0x2000, 0x23ff) AM_RAM_WRITE(colorram_w) AM_SHARE("colorram")
	AM_RANGE(0x2400, 0x27ff) AM_RAM_WRITE(videoram_w) AM_SHARE("videoram")
	AM_RANGE(0x2800, 0x2fff) AM_RAM
	AM_RANGE(0x3000, 0x30ff) AM_RAM AM_SHARE("spriteram2")
	AM_RANGE(0x3100, 0x37ff) AM_RAM
	AM_RANGE(0x3800, 0x38ff) AM_RAM AM_SHARE("spriteram")
	AM_RANGE(0x3900, 0x3fff) AM_RAM
	AM_RANGE(0x4000, 0xffff) AM_ROM
ADDRESS_MAP_END

ADDRESS_MAP_START(ironhors_state::slave_map)
	AM_RANGE(0x0000, 0x3fff) AM_ROM
	AM_RANGE(0x4000, 0x43ff) AM_RAM
	AM_RANGE(0x8000, 0x8000) AM_DEVREAD("soundlatch", generic_latch_8_device, read)
ADDRESS_MAP_END

ADDRESS_MAP_START(ironhors_state::slave_io_map)
	ADDRESS_MAP_GLOBAL_MASK(0xff)
	AM_RANGE(0x00, 0x01) AM_DEVREADWRITE("ym2203", ym2203_device, read, write)
ADDRESS_MAP_END

ADDRESS_MAP_START(ironhors_state::farwest_master_map)
	AM_RANGE(0x0000, 0x1bff) AM_ROM

	AM_RANGE(0x0000, 0x0002) AM_RAM
	//20=31db

	AM_RANGE(0x0005, 0x001f) AM_RAM
	AM_RANGE(0x0040, 0x005f) AM_RAM
	AM_RANGE(0x0060, 0x00ff) AM_RAM
	AM_RANGE(0x0800, 0x0800) AM_DEVWRITE("soundlatch", generic_latch_8_device, write)
	AM_RANGE(0x0900, 0x0900) /*AM_READ_PORT("DSW3") */AM_WRITE(sh_irqtrigger_w)
	AM_RANGE(0x0a00, 0x0a00) AM_READ_PORT("DSW2") //AM_WRITE(palettebank_w)
	AM_RANGE(0x0b00, 0x0b00) AM_READ_PORT("DSW1") AM_WRITE(flipscreen_w)
	AM_RANGE(0x0b01, 0x0b01) AM_READ_PORT("DSW2") //AM_WRITE(palettebank_w)
	AM_RANGE(0x0b02, 0x0b02) AM_READ_PORT("P1")
	AM_RANGE(0x0b03, 0x0b03) AM_READ_PORT("SYSTEM")



	AM_RANGE(0x1800, 0x1800) AM_WRITE(sh_irqtrigger_w)
	AM_RANGE(0x1a00, 0x1a00) AM_WRITE(irq_enable_w)
	AM_RANGE(0x1a01, 0x1a01) AM_RAM_WRITE(charbank_w)
	AM_RANGE(0x1a02, 0x1a02) AM_WRITE(palettebank_w)
//  AM_RANGE(0x1c00, 0x1fff) AM_RAM
	AM_RANGE(0x2000, 0x23ff) AM_RAM_WRITE(colorram_w) AM_SHARE("colorram")
	AM_RANGE(0x2400, 0x27ff) AM_RAM_WRITE(videoram_w) AM_SHARE("videoram")
	AM_RANGE(0x2800, 0x2fff) AM_RAM
	AM_RANGE(0x1c00, 0x1dff) AM_RAM AM_SHARE("spriteram2")
	AM_RANGE(0x3000, 0x38ff) AM_RAM
	AM_RANGE(0x31db, 0x31fa) AM_RAM AM_SHARE("scroll")
	AM_RANGE(0x1e00, 0x1eff) AM_RAM AM_SHARE("spriteram")
	AM_RANGE(0x3900, 0x3fff) AM_RAM
	AM_RANGE(0x4000, 0xffff) AM_ROM
ADDRESS_MAP_END

ADDRESS_MAP_START(ironhors_state::farwest_slave_map)
	AM_RANGE(0x0000, 0x3fff) AM_ROM
	AM_RANGE(0x4000, 0x43ff) AM_RAM
	AM_RANGE(0x8000, 0x8001) AM_DEVREADWRITE("ym2203", ym2203_device, read, write)
ADDRESS_MAP_END


/*************************************
 *
 *  Input ports
 *
 *************************************/

static INPUT_PORTS_START( dairesya )
	PORT_START("SYSTEM")
	KONAMI8_SYSTEM_UNK

	PORT_START("P1")
	KONAMI8_MONO_4WAY_B123_UNK

	PORT_START("P2")
	KONAMI8_COCKTAIL_4WAY_B123_UNK

	PORT_START("DSW1")
	KONAMI_COINAGE_LOC(DEF_STR( Free_Play ), "No Coin B", SW1)
	/* "No Coin B" = coins produce sound, but no effect on coin counter */

	PORT_START("DSW2")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) )        PORT_DIPLOCATION("SW2:1,2")
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_DIPSETTING(    0x00, "7" )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Cabinet ) )      PORT_DIPLOCATION("SW2:3")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x18, 0x18, DEF_STR( Bonus_Life ) )   PORT_DIPLOCATION("SW2:4,5")
	PORT_DIPSETTING(    0x18, "30K 70K+" )
	PORT_DIPSETTING(    0x10, "40K 80K+" )
	PORT_DIPSETTING(    0x08, "40K" )
	PORT_DIPSETTING(    0x00, "50K" )
	PORT_DIPNAME( 0x60, 0x40, DEF_STR( Difficulty ) )   PORT_DIPLOCATION("SW2:6,7")
	PORT_DIPSETTING(    0x60, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Normal ) )       // factory default (JP)
	PORT_DIPSETTING(    0x20, DEF_STR( Hard ) )         // factory default (US)
	PORT_DIPSETTING(    0x00, DEF_STR( Very_Hard ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) )  PORT_DIPLOCATION("SW2:8")
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START("DSW3")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Flip_Screen ) )  PORT_DIPLOCATION("SW3:1")
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x01, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Upright Controls" )      PORT_DIPLOCATION("SW3:2")
	PORT_DIPSETTING(    0x02, DEF_STR( Single ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Dual ) )
	PORT_DIPNAME( 0x04, 0x04, "Button Layout" )         PORT_DIPLOCATION("SW3:3") // though US manual says unused
	PORT_DIPSETTING(    0x04, "Power Attack Squat" )
	PORT_DIPSETTING(    0x00, "Squat Attack Power" )
	PORT_BIT( 0xf8, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

static INPUT_PORTS_START( ironhors )
	PORT_INCLUDE( dairesya )

	/* here button 3 for player 1 and 2 are exchanged */
	PORT_MODIFY("P1")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_COCKTAIL

	PORT_MODIFY("P2")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 )
INPUT_PORTS_END



/*************************************
 *
 *  Graphics definitions
 *
 *************************************/

static const gfx_layout ironhors_charlayout =
{
	8,8,
	RGN_FRAC(1,1),
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8
};

static const gfx_layout ironhors_spritelayout =
{
	16,16,
	512,
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4,
			32*8+0*4, 32*8+1*4, 32*8+2*4, 32*8+3*4, 32*8+4*4, 32*8+5*4, 32*8+6*4, 32*8+7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
			16*32, 17*32, 18*32, 19*32, 20*32, 21*32, 22*32, 23*32 },
	32*32
};

static GFXDECODE_START( ironhors )
	GFXDECODE_ENTRY( "gfx1", 0, ironhors_charlayout,         0, 16*8 )
	GFXDECODE_ENTRY( "gfx1", 0, ironhors_spritelayout, 16*8*16, 16*8 )
	GFXDECODE_ENTRY( "gfx1", 0, ironhors_charlayout,   16*8*16, 16*8 )  /* to handle 8x8 sprites */
GFXDECODE_END


static const gfx_layout farwest_charlayout =
{
	8,8,    /* 8*8 characters */
	2048,   /* 2048 characters */
	4,  /* 4 bits per pixel */
	{ 0, 2, 4, 6 }, /* the four bitplanes are packed in one byte */
	{ 3*8+1, 3*8+0, 0*8+1, 0*8+0, 1*8+1, 1*8+0, 2*8+1, 2*8+0 },
	{ 0*4*8, 1*4*8, 2*4*8, 3*4*8, 4*4*8, 5*4*8, 6*4*8, 7*4*8 },
	32*8    /* every char takes 32 consecutive bytes */
};

static const gfx_layout farwest_spritelayout =
{
	16,16,  /* 16*16 sprites */
	512,    /* 512 sprites */
	4,  /* 4 bits per pixel */
	{ 0, 512*32*8, 2*512*32*8, 3*512*32*8 },    /* the four bitplanes are separated */
	{ 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    /* every sprite takes 32 consecutive bytes */
};

static const gfx_layout farwest_spritelayout2 =
{
	8,8,    /* 8*8 characters */
	2048,   /* 2048 characters */
	4,  /* 4 bits per pixel */
	{ 0, 2048*8*8, 2*2048*8*8, 3*2048*8*8 },    /* the four bitplanes are separated */
	{ 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 /* every char takes 8 consecutive bytes */
};

static GFXDECODE_START( farwest )
	GFXDECODE_ENTRY( "gfx1", 0, farwest_charlayout,         0, 16*8 )
	GFXDECODE_ENTRY( "gfx2", 0, farwest_spritelayout, 16*8*16, 16*8 )
	GFXDECODE_ENTRY( "gfx2", 0, farwest_spritelayout2,16*8*16, 16*8 )  /* to handle 8x8 sprites */
GFXDECODE_END


/*************************************
 *
 *  Discrete sound
 *
 *************************************/

static const discrete_mixer_desc ironhors_mixer_desc =
	{DISC_MIXER_IS_RESISTOR,
		{RES_K(2.2), RES_K(2.2), RES_K(2.2)},
		{0,0,0,0,0,0},  /* no variable resistors   */
		{0,0,0,0,0,0},  /* no node capacitors      */
		0, RES_K(1),   /* RF */
		0,
		0,
		0, 1};

static const discrete_mixer_desc ironhors_mixer_desc_final =
	{DISC_MIXER_IS_RESISTOR,
		{RES_K(0.5), RES_K(1)},
		{0,0,0,0,0,0},  /* no variable resistors   */
		{CAP_U(4.7), CAP_U(4.7)},  /* node capacitors         */
		0, RES_K(1),   /* RF */
		0,
		0,
		0, 1};

static DISCRETE_SOUND_START( ironhors )

	DISCRETE_INPUTX_STREAM(NODE_01, 0, 5.0, 0)
	DISCRETE_INPUTX_STREAM(NODE_02, 1, 5.0, 0)
	DISCRETE_INPUTX_STREAM(NODE_03, 2, 5.0, 0)

	DISCRETE_INPUTX_STREAM(NODE_04, 3, 1.0, 0)

	DISCRETE_INPUT_DATA(NODE_11)
	DISCRETE_INPUT_DATA(NODE_12)
	DISCRETE_INPUT_DATA(NODE_13)

	DISCRETE_RCFILTER_SW(NODE_21, 1, NODE_01, NODE_11, 1000, CAP_U(0.22), 0, 0, 0)
	DISCRETE_RCFILTER_SW(NODE_22, 1, NODE_02, NODE_12, 1000, CAP_U(0.22), 0, 0, 0)
	DISCRETE_RCFILTER_SW(NODE_23, 1, NODE_03, NODE_13, 1000, CAP_U(0.22), 0, 0, 0)

	DISCRETE_MIXER3(NODE_30, 1, NODE_21, NODE_22, NODE_23, &ironhors_mixer_desc)

	DISCRETE_RCFILTER(NODE_31,NODE_04, RES_K(1), CAP_N(33) )
	DISCRETE_MIXER2(NODE_33, 1, NODE_30, NODE_31, &ironhors_mixer_desc_final)

	DISCRETE_OUTPUT(NODE_33, 5.0 )

DISCRETE_SOUND_END

/*************************************
 *
 *  Machine driver
 *
 *************************************/

void ironhors_state::machine_start()
{
	save_item(NAME(m_palettebank));
	save_item(NAME(m_charbank));
	save_item(NAME(m_spriterambank));
	save_item(NAME(m_interrupt_mask));
	save_item(NAME(m_interrupt_ticks));
	save_item(NAME(m_irq_enable));
	save_item(NAME(m_nmi_enable));
}

void ironhors_state::machine_reset()
{
	m_palettebank = 0;
	m_charbank = 0;
	m_spriterambank = 0;
	m_interrupt_mask = 0;
	m_interrupt_ticks = 0;
	m_irq_enable = 0;
	m_nmi_enable = 0;
}

/*
clock measurements:
main Xtal is 18.432mhz

Z80 runs at 3.072mhz

M6809E runs at 1.532mhz ( NOT 3.072mhz)

Vsync is 61hz

Hsync is 15,56khz

These clocks make the emulation run too fast.
*/

MACHINE_CONFIG_START(ironhors_state::ironhors)

	/* basic machine hardware */
	MCFG_CPU_ADD("maincpu", MC6809E, MASTER_CLOCK/6)        /* 3.072 MHz??? mod by Shingo Suzuki 1999/10/15 */
	MCFG_CPU_PROGRAM_MAP(master_map)
	MCFG_TIMER_DRIVER_ADD_SCANLINE("scantimer", ironhors_state, interrupt_tick, "screen", 0, 16)

	MCFG_CPU_ADD("soundcpu", Z80, MASTER_CLOCK/6)      /* 3.072 MHz */
	MCFG_CPU_PROGRAM_MAP(slave_map)
	MCFG_CPU_IO_MAP(slave_io_map)


	/* video hardware */
	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK/3, 396, 8, 248, 256, 16, 240)
	MCFG_SCREEN_UPDATE_DRIVER(ironhors_state, screen_update)
	MCFG_SCREEN_PALETTE("palette")

	MCFG_GFXDECODE_ADD("gfxdecode", "palette", ironhors)
	MCFG_PALETTE_ADD("palette", 16*8*16+16*8*16)
	MCFG_PALETTE_INDIRECT_ENTRIES(256)
	MCFG_PALETTE_INIT_OWNER(ironhors_state, ironhors)

	/* sound hardware */
	MCFG_SPEAKER_STANDARD_MONO("mono")

	MCFG_GENERIC_LATCH_8_ADD("soundlatch")

	MCFG_SOUND_ADD("ym2203", YM2203, MASTER_CLOCK/6)
	MCFG_AY8910_PORT_A_WRITE_CB(WRITE8(ironhors_state, filter_w))

	MCFG_SOUND_ROUTE_EX(0, "disc_ih", 1.0, 0)
	MCFG_SOUND_ROUTE_EX(1, "disc_ih", 1.0, 1)
	MCFG_SOUND_ROUTE_EX(2, "disc_ih", 1.0, 2)
	MCFG_SOUND_ROUTE_EX(3, "disc_ih", 1.0, 3)

	MCFG_SOUND_ADD("disc_ih", DISCRETE, 0)
	MCFG_DISCRETE_INTF(ironhors)
	MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)

MACHINE_CONFIG_END

WRITE8_MEMBER(ironhors_state::irq_enable_w)
{
	uint8_t mask = data & 0x07;		// check only bits 0,1,2

	m_nmi_enable = mask & 0x01;		// bit 0 NMI
	m_irq_enable = mask & 0x05;		// bit 2 IRQ
	
	// bit 4 is also used....
}

INTERRUPT_GEN_MEMBER(ironhors_state::farwest_irq)
{
	if (m_irq_enable)
		m_maincpu->set_input_line(M6809_FIRQ_LINE, HOLD_LINE);
}

INTERRUPT_GEN_MEMBER(ironhors_state::farwest_irq_nmi)
{
	if (m_nmi_enable)
		m_maincpu->set_input_line(INPUT_LINE_NMI, PULSE_LINE);
}

READ8_MEMBER(ironhors_state::farwest_soundlatch_r)
{
	return m_soundlatch->read(m_soundcpu->space(AS_PROGRAM), 0);
}

MACHINE_CONFIG_START(ironhors_state::farwest)
	ironhors(config);

	MCFG_CPU_MODIFY("maincpu")
	MCFG_CPU_PROGRAM_MAP(farwest_master_map)
	MCFG_CPU_VBLANK_INT_DRIVER("screen", ironhors_state, farwest_irq)
	MCFG_CPU_PERIODIC_INT_DRIVER(ironhors_state, farwest_irq_nmi, 480)		/* 8*60, seems ok */
	MCFG_DEVICE_REMOVE("scantimer")

	MCFG_CPU_MODIFY("soundcpu")
	MCFG_CPU_PROGRAM_MAP(farwest_slave_map)
	MCFG_DEVICE_REMOVE_ADDRESS_MAP(AS_IO)

	MCFG_GFXDECODE_MODIFY("gfxdecode", farwest)
	MCFG_VIDEO_START_OVERRIDE(ironhors_state,farwest)
	MCFG_SCREEN_MODIFY("screen")
	MCFG_SCREEN_UPDATE_DRIVER(ironhors_state, screen_update_farwest)

	MCFG_SOUND_MODIFY("ym2203")
	MCFG_AY8910_PORT_B_READ_CB(READ8(ironhors_state, farwest_soundlatch_r))
	MCFG_AY8910_PORT_A_WRITE_CB(WRITE8(ironhors_state, filter_w))
MACHINE_CONFIG_END



/*************************************
 *
 *  ROM definition(s)
 *
 *************************************/

ROM_START( ironhors )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "560_k03.13c",  0x4000, 0x8000, CRC(395351b4) SHA1(21cf2f39a208571d06f20ca8ca346999541e870a) )
	ROM_LOAD( "560_k02.12c",  0xc000, 0x4000, CRC(1cff3d59) SHA1(9194f31ec1e9a90850f2f44aef10b5b32a28ef1d) )

	ROM_REGION( 0x10000, "soundcpu", 0 )
	ROM_LOAD( "560_h01.10c",  0x0000, 0x4000, CRC(2b17930f) SHA1(be7b21f050f6b74c75a33c9284455bbed5b03c63) )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD16_BYTE( "560_h06.08f",  0x00000, 0x8000, CRC(f21d8c93) SHA1(4245fff5360e10441e11d0d207d510e5c317bb0e) )
	ROM_LOAD16_BYTE( "560_h05.07f",  0x00001, 0x8000, CRC(60107859) SHA1(ab59b6be155d36811a37dc873abbd97cd0a4120d) )
	ROM_LOAD16_BYTE( "560_h07.09f",  0x10000, 0x8000, CRC(c761ec73) SHA1(78266c9ff3ea74a59fd3ce84afb4f8a1164c8bba) )
	ROM_LOAD16_BYTE( "560_h04.06f",  0x10001, 0x8000, CRC(c1486f61) SHA1(4b96aebe5d35fd1d73bde8576689addbb1ff66ed) )

	ROM_REGION( 0x0500, "proms", 0 )
	ROM_LOAD( "03f_h08.bin",  0x0000, 0x0100, CRC(9f6ddf83) SHA1(08a37182a974c5448156637f10fe60bfe5f225ad) ) /* palette red */
	ROM_LOAD( "04f_h09.bin",  0x0100, 0x0100, CRC(e6773825) SHA1(7523e7fa090d850fe79ff0069d3260c76645d65a) ) /* palette green */
	ROM_LOAD( "05f_h10.bin",  0x0200, 0x0100, CRC(30a57860) SHA1(3ec7535286c8bc65e203320f47e4ed6f1d3d61c9) ) /* palette blue */
	ROM_LOAD( "10f_h12.bin",  0x0300, 0x0100, CRC(5eb33e73) SHA1(f34916dc4617b0c48e0a7ac6ace97b35dfcf1c40) ) /* character lookup table */
	ROM_LOAD( "10f_h11.bin",  0x0400, 0x0100, CRC(a63e37d8) SHA1(1a0a76ecd14310125bdf41a8431d562ed498eb27) ) /* sprite lookup table */
ROM_END

ROM_START( ironhorsh )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "13c_h03.bin",  0x4000, 0x8000, CRC(24539af1) SHA1(1eb96a2cb03007665587d6ec114894ab4cafdb23) )
	ROM_LOAD( "12c_h02.bin",  0xc000, 0x4000, CRC(fab07f86) SHA1(9f599d32d473d873113b89f2b24a54a435dbcbe5) )

	ROM_REGION( 0x10000, "soundcpu", 0 )
	ROM_LOAD( "10c_h01.bin",  0x0000, 0x4000, CRC(2b17930f) SHA1(be7b21f050f6b74c75a33c9284455bbed5b03c63) )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD16_BYTE( "08f_h06.bin",  0x00000, 0x8000, CRC(f21d8c93) SHA1(4245fff5360e10441e11d0d207d510e5c317bb0e) )
	ROM_LOAD16_BYTE( "07f_h05.bin",  0x00001, 0x8000, CRC(60107859) SHA1(ab59b6be155d36811a37dc873abbd97cd0a4120d) )
	ROM_LOAD16_BYTE( "09f_h07.bin",  0x10000, 0x8000, CRC(c761ec73) SHA1(78266c9ff3ea74a59fd3ce84afb4f8a1164c8bba) )
	ROM_LOAD16_BYTE( "06f_h04.bin",  0x10001, 0x8000, CRC(c1486f61) SHA1(4b96aebe5d35fd1d73bde8576689addbb1ff66ed) )

	ROM_REGION( 0x0500, "proms", 0 )
	ROM_LOAD( "03f_h08.bin",  0x0000, 0x0100, CRC(9f6ddf83) SHA1(08a37182a974c5448156637f10fe60bfe5f225ad) ) /* palette red */
	ROM_LOAD( "04f_h09.bin",  0x0100, 0x0100, CRC(e6773825) SHA1(7523e7fa090d850fe79ff0069d3260c76645d65a) ) /* palette green */
	ROM_LOAD( "05f_h10.bin",  0x0200, 0x0100, CRC(30a57860) SHA1(3ec7535286c8bc65e203320f47e4ed6f1d3d61c9) ) /* palette blue */
	ROM_LOAD( "10f_h12.bin",  0x0300, 0x0100, CRC(5eb33e73) SHA1(f34916dc4617b0c48e0a7ac6ace97b35dfcf1c40) ) /* character lookup table */
	ROM_LOAD( "10f_h11.bin",  0x0400, 0x0100, CRC(a63e37d8) SHA1(1a0a76ecd14310125bdf41a8431d562ed498eb27) ) /* sprite lookup table */
ROM_END

ROM_START( dairesya )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "560-k03.13c",  0x4000, 0x8000, CRC(2ac6103b) SHA1(331e1be3f29df85d65081831c215743354d76778) ) // sldh
	ROM_LOAD( "560-k02.12c",  0xc000, 0x4000, CRC(07bc13a9) SHA1(1d3a44ad41799f89bfa84cc05fbe0792e57305af) ) // sldh

	ROM_REGION( 0x10000, "soundcpu", 0 )
	ROM_LOAD( "560-j01.10c",  0x0000, 0x4000, CRC(a203b223) SHA1(fd19ae55bda467a09151539be6dce3791c28f18a) )

	ROM_REGION( 0x20000, "gfx1", 0 )
	ROM_LOAD16_BYTE( "560-j06.8f",   0x00000, 0x8000, CRC(a6e8248d) SHA1(7df653bb3a2257c249c3cf2c3f4f324d687a6b39) )
	ROM_LOAD16_BYTE( "560-j05.7f",   0x00001, 0x8000, CRC(f75893d4) SHA1(dc71b912d9bf5104dc633f687c52043df37852f0) )
	ROM_LOAD16_BYTE( "560-k07.9f",   0x10000, 0x8000, CRC(c8a1b840) SHA1(753b6fcbb4b28bbb63a392cdef90568734eac9bd) )
	ROM_LOAD16_BYTE( "560-k04.6f",   0x10001, 0x8000, CRC(c883d856) SHA1(4c4f91b72dab841ec15ca62121ed0c0878dfff23) )

	ROM_REGION( 0x0500, "proms", 0 )
	ROM_LOAD( "03f_h08.bin",  0x0000, 0x0100, CRC(9f6ddf83) SHA1(08a37182a974c5448156637f10fe60bfe5f225ad) ) /* palette red */
	ROM_LOAD( "04f_h09.bin",  0x0100, 0x0100, CRC(e6773825) SHA1(7523e7fa090d850fe79ff0069d3260c76645d65a) ) /* palette green */
	ROM_LOAD( "05f_h10.bin",  0x0200, 0x0100, CRC(30a57860) SHA1(3ec7535286c8bc65e203320f47e4ed6f1d3d61c9) ) /* palette blue */
	ROM_LOAD( "10f_h12.bin",  0x0300, 0x0100, CRC(5eb33e73) SHA1(f34916dc4617b0c48e0a7ac6ace97b35dfcf1c40) ) /* character lookup table */
	ROM_LOAD( "10f_h11.bin",  0x0400, 0x0100, CRC(a63e37d8) SHA1(1a0a76ecd14310125bdf41a8431d562ed498eb27) ) /* sprite lookup table */
ROM_END

ROM_START( farwest )
	ROM_REGION( 0x12000, "maincpu", 0 ) /* 64k for code + 8k for extra ROM */
	ROM_LOAD( "ironhors.008", 0x04000, 0x4000, CRC(b1c8246c) SHA1(4ceb098bb0b4efcbe50bb4b23bd27a60dabf2b3e) )
	ROM_LOAD( "ironhors.009", 0x08000, 0x8000, CRC(ea34ecfc) SHA1(8c7f12e76d2b9eb592ebf1bfd3e16a6b130da8e5) )
	ROM_LOAD( "ironhors.007", 0x00000, 0x2000, CRC(471182b7) SHA1(48ff58cbbf971b257e8099ec331397cf73dc8325) )   /* don't know what this is for */

	ROM_REGION( 0x10000, "soundcpu", 0 )
	ROM_LOAD( "ironhors.010", 0x0000, 0x4000, CRC(a28231a6) SHA1(617e8fdf8129081c6a1bbbf140837a375a51da72) )

	ROM_REGION( 0x10000, "gfx1", 0 )
	ROM_LOAD( "ironhors.005", 0x00000, 0x8000, CRC(f77e5b83) SHA1(6c72732dc96c1652713b2aba6f0a2410f9457818) )
	ROM_LOAD( "ironhors.006", 0x08000, 0x8000, CRC(7bbc0b51) SHA1(9b4890f2d20a8ddf5ba3f4325df070509252e06e) )

	ROM_REGION( 0x10000, "gfx2", 0 )
	ROM_LOAD( "ironhors.001", 0x00000, 0x4000, CRC(a8fc21d3) SHA1(1e898aaccad1919bbacf8d7957f5a0761df20767) )
	ROM_LOAD( "ironhors.002", 0x04000, 0x4000, CRC(9c1e5593) SHA1(7d41d2224f0653e09d8728ccdec2df60f549e36e) )
	ROM_LOAD( "ironhors.003", 0x08000, 0x4000, CRC(3a0bf799) SHA1(b34d5c7edda06b8a579d6d390511781a43ffce83) )
	ROM_LOAD( "ironhors.004", 0x0c000, 0x4000, CRC(1fab18a3) SHA1(cc7ddf60b719e7c5a689f716ebee9bc04ade406a) )

	ROM_REGION( 0x0500, "proms", 0 )
	ROM_LOAD( "ironcol.003",  0x0000, 0x0100, CRC(3e3fca11) SHA1(c92737659f063889a2b210cfe5c294b8a4864489) ) /* palette red */
	ROM_LOAD( "ironcol.001",  0x0100, 0x0100, CRC(dfb13014) SHA1(d9f9a5bed1300faf7c3864d5c5ae07087de25824) ) /* palette green */
	ROM_LOAD( "ironcol.002",  0x0200, 0x0100, CRC(77c88430) SHA1(e3041945b14955de109a505d9aa9f79046bed6a8) ) /* palette blue */
	ROM_LOAD( "10f_h12.bin",  0x0300, 0x0100, CRC(5eb33e73) SHA1(f34916dc4617b0c48e0a7ac6ace97b35dfcf1c40) ) /* character lookup table */
	ROM_LOAD( "ironcol.005",  0x0400, 0x0100, CRC(15077b9c) SHA1(c7fe24e3d481150452ff774f3908510db9e28367) ) /* sprite lookup table */
ROM_END


/*************************************
 *
 *  Game driver(s)
 *
 *************************************/
// versions are taken from the letters on the program ROMs' labels
GAME( 1986, ironhors,  0,        ironhors, ironhors, ironhors_state, 0, ROT0, "Konami", "Iron Horse (version K)", MACHINE_SUPPORTS_SAVE )
GAME( 1986, ironhorsh, ironhors, ironhors, ironhors, ironhors_state, 0, ROT0, "Konami", "Iron Horse (version H)", MACHINE_SUPPORTS_SAVE )
GAME( 1986, dairesya,  ironhors, ironhors, dairesya, ironhors_state, 0, ROT0, "Konami (Kawakusu license)", "Dai Ressya Goutou (Japan, version K)", MACHINE_SUPPORTS_SAVE )
GAME( 1986, farwest,   ironhors, farwest,  ironhors, ironhors_state, 0, ROT0, "bootleg?", "Far West", MACHINE_NOT_WORKING | MACHINE_SUPPORTS_SAVE )
