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path: root/src/mame/drivers/m52.cpp
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// license:BSD-3-Clause
// copyright-holders:Nicola Salmoria
/***************************************************************************

    Irem M52 hardware

****************************************************************************

    Moon Patrol memory map

    driver by Nicola Salmoria

    0000-3fff ROM
    8000-83ff Video RAM
    8400-87ff Color RAM
    e000-e7ff RAM


    read:
    8800      protection
    d000      IN0
    d001      IN1
    d002      IN2
    d003      DSW1
    d004      DSW2

    write:
    c800-c8ff sprites
    d000      sound command
    d001      flip screen

    I/O ports
    write:
    10-1f     scroll registers
    40        background #1 x position
    60        background #1 y position
    80        background #2 x position
    a0        background #2 y position
    c0        background control

*****************************************************************************

    Locations based on m58.c driver

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

#include "emu.h"
#include "cpu/z80/z80.h"
#include "audio/irem.h"
#include "includes/iremipt.h"
#include "includes/m52.h"

#define MASTER_CLOCK        XTAL(18'432'000)

/*************************************
 *
 *  Memory maps
 *
 *************************************/

void m52_state::main_map(address_map &map)
{
	map(0x0000, 0x3fff).rom();
	map(0x8000, 0x83ff).ram().w(FUNC(m52_state::m52_videoram_w)).share("videoram");
	map(0x8400, 0x87ff).ram().w(FUNC(m52_state::m52_colorram_w)).share("colorram");
	map(0x8800, 0x8800).mirror(0x07ff).r(FUNC(m52_state::m52_protection_r));
	map(0xc800, 0xcbff).mirror(0x0400).writeonly().share("spriteram"); // only 0x100 of this used by video code?
	map(0xd000, 0xd000).mirror(0x07fc).w("irem_audio", FUNC(irem_audio_device::cmd_w));
	map(0xd001, 0xd001).mirror(0x07fc).w(FUNC(m52_state::m52_flipscreen_w));   /* + coin counters */
	map(0xd000, 0xd000).mirror(0x07f8).portr("IN0");
	map(0xd001, 0xd001).mirror(0x07f8).portr("IN1");
	map(0xd002, 0xd002).mirror(0x07f8).portr("IN2");
	map(0xd003, 0xd003).mirror(0x07f8).portr("DSW1");
	map(0xd004, 0xd004).mirror(0x07f8).portr("DSW2");
	map(0xe000, 0xe7ff).ram();
}


void m52_alpha1v_state::alpha1v_map(address_map &map)
{
	map(0x0000, 0x6fff).rom();
	map(0x8000, 0x83ff).ram().w(FUNC(m52_state::m52_videoram_w)).share("videoram");
	map(0x8400, 0x87ff).ram().w(FUNC(m52_state::m52_colorram_w)).share("colorram");
	map(0x8800, 0x8800).mirror(0x07ff).r(FUNC(m52_state::m52_protection_r)); // result is ignored
	map(0xc800, 0xc9ff).writeonly().share("spriteram");
	map(0xd000, 0xd000).portr("IN0").w("irem_audio", FUNC(irem_audio_device::cmd_w));
	map(0xd001, 0xd001).portr("IN1").w(FUNC(m52_alpha1v_state::alpha1v_flipscreen_w));
	map(0xd002, 0xd002).portr("IN2");
	map(0xd003, 0xd003).portr("DSW1");
	map(0xd004, 0xd004).portr("DSW2");
	map(0xe000, 0xefff).ram(); // bigger or mirrored?
}


void m52_state::main_portmap(address_map &map)
{
	map.global_mask(0xff);
	map(0x00, 0x00).mirror(0x1f).w(FUNC(m52_state::m52_scroll_w));
	map(0x40, 0x40).mirror(0x1f).w(FUNC(m52_state::m52_bg1xpos_w));
	map(0x60, 0x60).mirror(0x1f).w(FUNC(m52_state::m52_bg1ypos_w));
	map(0x80, 0x80).mirror(0x1f).w(FUNC(m52_state::m52_bg2xpos_w));
	map(0xa0, 0xa0).mirror(0x1f).w(FUNC(m52_state::m52_bg2ypos_w));
	map(0xc0, 0xc0).mirror(0x1f).w(FUNC(m52_state::m52_bgcontrol_w));
}


/*************************************
 *
 *  Port definitions
 *
 *************************************/

/* Same as m57, m58 and m62 (IREM Z80 hardware) */
static INPUT_PORTS_START( m52 )
	PORT_START("IN0")
	/* Start 1 & 2 also restarts and freezes the game with stop mode on
	   and are used in test mode to enter and esc the various tests */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	/* coin input must be active for 19 frames to be consistently recognized */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_IMPULSE(19)
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("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_LOW, IPT_UNUSED )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 )
	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_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_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL

	/* DSW1 is so different from game to game that it isn't included here */

	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Flip_Screen ) ) PORT_DIPLOCATION("SW2:1")
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Cabinet ) ) PORT_DIPLOCATION("SW2:2")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x04, 0x04, "Coin Mode" ) PORT_DIPLOCATION("SW2:3")
	PORT_DIPSETTING(    0x04, "Mode 1" )
	PORT_DIPSETTING(    0x00, "Mode 2" )
	PORT_DIPUNKNOWN_DIPLOC( 0x08, IP_ACTIVE_LOW, "SW2:4" )
	PORT_DIPUNKNOWN_DIPLOC( 0x10, IP_ACTIVE_LOW, "SW2:5" )
	PORT_DIPUNKNOWN_DIPLOC( 0x20, IP_ACTIVE_LOW, "SW2:6" )
	PORT_DIPNAME( 0x40, 0x40, "Invulnerability (Cheat)") PORT_DIPLOCATION("SW2:7")
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_SERVICE_DIPLOC( 0x80, IP_ACTIVE_LOW, "SW2:8" )
INPUT_PORTS_END


static INPUT_PORTS_START( mpatrol )
	PORT_INCLUDE(m52)

	PORT_MODIFY("IN1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )             /* IPT_JOYSTICK_DOWN */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )             /* IPT_JOYSTICK_UP */

	PORT_MODIFY("IN2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )             /* IPT_JOYSTICK_DOWN PORT_COCKTAIL */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )             /* IPT_JOYSTICK_UP   PORT_COCKTAIL */

	PORT_MODIFY("DSW2")
	PORT_DIPUNUSED_DIPLOC( 0x08, IP_ACTIVE_LOW, "SW2:4" )   /* should have been "slow motion" but no conditional jump at 0x00c3 */
	/* In stop mode, press 2 to stop and 1 to restart */
	PORT_DIPNAME( 0x10, 0x10, "Stop Mode (Cheat)") PORT_DIPLOCATION("SW2:5")
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Sector Selection (Cheat)") PORT_DIPLOCATION("SW2:6")
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START("DSW1")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2")
	PORT_DIPSETTING(    0x00, "1" )
	PORT_DIPSETTING(    0x01, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x03, "5" )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Bonus_Life ) ) PORT_DIPLOCATION("SW1:3,4")
	PORT_DIPSETTING(    0x0c, "10000 30000 50000" )
	PORT_DIPSETTING(    0x08, "20000 40000 60000" )
	PORT_DIPSETTING(    0x04, "10000" )
	PORT_DIPSETTING(    0x00, DEF_STR( None ) )
	IREM_Z80_COINAGE_TYPE_1_LOC(SW1)
INPUT_PORTS_END


static INPUT_PORTS_START( mpatrolw )
	PORT_INCLUDE(mpatrol)

	PORT_MODIFY("DSW1")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) ) PORT_DIPLOCATION("SW1:1,2")
	PORT_DIPSETTING(    0x00, "2" )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x02, "4" )
	PORT_DIPSETTING(    0x03, "5" )
INPUT_PORTS_END


static INPUT_PORTS_START( alpha1v )
	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_COIN2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("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_LOW, IPT_BUTTON2 )
	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_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_BUTTON2 ) PORT_COCKTAIL
	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_COCKTAIL

	PORT_START("DSW1")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x00, "5" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
	PORT_DIPUNUSED( 0x08, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(    0x10, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )
	PORT_DIPUNUSED( 0x20, IP_ACTIVE_LOW )
	PORT_DIPUNUSED( 0x40, IP_ACTIVE_LOW )
	PORT_DIPUNUSED( 0x80, IP_ACTIVE_LOW )

	PORT_START("DSW2")
	PORT_DIPNAME( 0x0f, 0x00, DEF_STR( Coin_A ) )           /* table at 0x5ef4 - 16 bytes (coins) + 16 bytes (credits) */
	PORT_DIPSETTING(    0x0b, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 3C_1C ) )
//  PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x09, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0a, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x0d, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0e, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x0f, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x07, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x06, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x05, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x04, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x03, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x02, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x01, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPNAME( 0xf0, 0x00, DEF_STR( Coin_B ) )           /* table at 0x5f14 - 16 bytes (coins) + 16 bytes (credits) */
//  PORT_DIPSETTING(    0xf0, "1 Coin/0 Credit" )
//  PORT_DIPSETTING(    0x70, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x60, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x50, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x40, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x30, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x20, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0x10, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
//  PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x90, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_7C ) )
INPUT_PORTS_END


/*************************************
*
*  Graphics layouts
*
*************************************/

static const gfx_layout charlayout =
{
	8,8,
	RGN_FRAC(1,2),
	2,
	{ RGN_FRAC(0,2), RGN_FRAC(1,2) },
	{ STEP8(0,1) },
	{ STEP8(0,8) },
	8 * 8
};

static const gfx_layout spritelayout =
{
	16,16,
	RGN_FRAC(1,3),
	3,
	{ RGN_FRAC(2,3), RGN_FRAC(0,3), RGN_FRAC(1,3) },
	{ STEP8(0,1), STEP8(16 * 8,1) },
	{ STEP16(0,8) },
	32 * 8
};

static const uint32_t bgcharlayout_xoffset[256] =
{
	STEP4(0x000,1), STEP4(0x008,1), STEP4(0x010,1), STEP4(0x018,1),
	STEP4(0x020,1), STEP4(0x028,1), STEP4(0x030,1), STEP4(0x038,1),
	STEP4(0x040,1), STEP4(0x048,1), STEP4(0x050,1), STEP4(0x058,1),
	STEP4(0x060,1), STEP4(0x068,1), STEP4(0x070,1), STEP4(0x078,1),
	STEP4(0x080,1), STEP4(0x088,1), STEP4(0x090,1), STEP4(0x098,1),
	STEP4(0x0a0,1), STEP4(0x0a8,1), STEP4(0x0b0,1), STEP4(0x0b8,1),
	STEP4(0x0c0,1), STEP4(0x0c8,1), STEP4(0x0d0,1), STEP4(0x0d8,1),
	STEP4(0x0e0,1), STEP4(0x0e8,1), STEP4(0x0f0,1), STEP4(0x0f8,1),
	STEP4(0x100,1), STEP4(0x108,1), STEP4(0x110,1), STEP4(0x118,1),
	STEP4(0x120,1), STEP4(0x128,1), STEP4(0x130,1), STEP4(0x138,1),
	STEP4(0x140,1), STEP4(0x148,1), STEP4(0x150,1), STEP4(0x158,1),
	STEP4(0x160,1), STEP4(0x168,1), STEP4(0x170,1), STEP4(0x178,1),
	STEP4(0x180,1), STEP4(0x188,1), STEP4(0x190,1), STEP4(0x198,1),
	STEP4(0x1a0,1), STEP4(0x1a8,1), STEP4(0x1b0,1), STEP4(0x1b8,1),
	STEP4(0x1c0,1), STEP4(0x1c8,1), STEP4(0x1d0,1), STEP4(0x1d8,1),
	STEP4(0x1e0,1), STEP4(0x1e8,1), STEP4(0x1f0,1), STEP4(0x1f8,1)
};

static const uint32_t bgcharlayout_yoffset[128] =
{
	STEP32(0x0000,0x200), STEP32(0x4000,0x200), STEP32(0x8000,0x200), STEP32(0xc000,0x200)
};

static const gfx_layout bgcharlayout =
{
	256, 128, /* 256x64 image format */
	1,       /* 1 image */
	2,       /* 2 bits per pixel */
	{ 4, 0 },       /* the two bitplanes for 4 pixels are packed into one byte */
	EXTENDED_XOFFS,
	EXTENDED_YOFFS,
	0x8000,
	bgcharlayout_xoffset,
	bgcharlayout_yoffset
};


static GFXDECODE_START(gfx_m52_sp)
	GFXDECODE_ENTRY("sp", 0x0000, spritelayout, 0, 16)
GFXDECODE_END

static GFXDECODE_START(gfx_m52_tx)
	GFXDECODE_ENTRY("tx", 0x0000, charlayout, 0, 128)
GFXDECODE_END

static GFXDECODE_START(gfx_m52_bg)
	GFXDECODE_ENTRY("bg0", 0x0000, bgcharlayout, 0 * 4, 1)
	GFXDECODE_ENTRY("bg1", 0x0000, bgcharlayout, 1 * 4, 1)
	GFXDECODE_ENTRY("bg2", 0x0000, bgcharlayout, 2 * 4, 1)
GFXDECODE_END




/*************************************
*
*  Machine drivers
*
*************************************/

void m52_state::machine_reset()
{
	m_bg1xpos = 0;
	m_bg1ypos = 0;
	m_bg2xpos = 0;
	m_bg2ypos = 0;
	m_bgcontrol = 0;
}

MACHINE_CONFIG_START(m52_state::m52)

	/* basic machine hardware */
	MCFG_DEVICE_ADD("maincpu", Z80, MASTER_CLOCK / 6)
	MCFG_DEVICE_PROGRAM_MAP(main_map)
	MCFG_DEVICE_IO_MAP(main_portmap)
	MCFG_DEVICE_VBLANK_INT_DRIVER("screen", m52_state, irq0_line_hold)

	/* video hardware */
	MCFG_PALETTE_ADD("sp_palette", 256)
	MCFG_PALETTE_INDIRECT_ENTRIES(32)
	MCFG_DEVICE_ADD("sp_gfxdecode", GFXDECODE, "sp_palette", gfx_m52_sp)

	MCFG_PALETTE_ADD("tx_palette", 512)
	MCFG_DEVICE_ADD("tx_gfxdecode", GFXDECODE, "tx_palette", gfx_m52_tx)

	MCFG_PALETTE_ADD("bg_palette", 3 * 4)
	MCFG_PALETTE_INDIRECT_ENTRIES(32)
	MCFG_DEVICE_ADD("bg_gfxdecode", GFXDECODE, "bg_palette", gfx_m52_bg)

	MCFG_SCREEN_ADD("screen", RASTER)
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK / 3, 384, 136, 376, 282, 22, 274)
	MCFG_SCREEN_UPDATE_DRIVER(m52_state, screen_update_m52)

	/* sound hardware */
	//m52_sound_c_audio(config);
	MCFG_DEVICE_ADD("irem_audio", IREM_M52_SOUNDC_AUDIO, 0)

MACHINE_CONFIG_END


MACHINE_CONFIG_START(m52_alpha1v_state::alpha1v)
	m52(config);

	/* basic machine hardware */
	MCFG_DEVICE_MODIFY("maincpu")
	MCFG_DEVICE_PROGRAM_MAP(alpha1v_map)
	MCFG_SCREEN_MODIFY("screen")
	MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK / 3, 384, 136, 376, 282, 16, 272)

MACHINE_CONFIG_END



/*************************************
*
*  ROM definitions
*
*************************************/

ROM_START(mpatrol)
	ROM_REGION(0x10000, "maincpu", 0)
	ROM_LOAD("mpa-1.3m", 0x0000, 0x1000, CRC(5873a860) SHA1(8c03726d6e049c3edbc277440184e31679f78258))
	ROM_LOAD("mpa-2.3l", 0x1000, 0x1000, CRC(f4b85974) SHA1(dfb2efb57378a20af6f20569f4360cde95596f93))
	ROM_LOAD("mpa-3.3k", 0x2000, 0x1000, CRC(2e1a598c) SHA1(112c3c9678db8a8540a8df3708020c87fd10c91b))
	ROM_LOAD("mpa-4.3j", 0x3000, 0x1000, CRC(dd05b587) SHA1(727961b0dafa4a96b580d51013336db2a18aff1e))

	ROM_REGION(0x8000, "irem_audio:iremsound", 0)
	ROM_LOAD("mp-s1.1a", 0x7000, 0x1000, CRC(561d3108) SHA1(4998c68a9e9a8002251fa8f07aa1082444a9dc80))

	ROM_REGION(0x2000, "tx", 0)
	ROM_LOAD("mpe-5.3e", 0x0000, 0x1000, CRC(e3ee7f75) SHA1(b03d0d56150d3e9da4a4c871338097b4f450b649))
	ROM_LOAD("mpe-4.3f", 0x1000, 0x1000, CRC(cca6d023) SHA1(fecb3059fb09897a096add9452b50aec55c07545))

	/* 0x2000-0x2fff is intentionally left as 0x00 fill, unused bitplane */
	ROM_REGION(0x3000, "sp", ROMREGION_ERASE00)
	ROM_LOAD("mpb-2.3m", 0x0000, 0x1000, CRC(707ace5e) SHA1(93c682e13e74bce29ced3a87bffb29569c114c3b))
	ROM_LOAD("mpb-1.3n", 0x1000, 0x1000, CRC(9b72133a) SHA1(1393ef92ae1ad58a4b62ca1660c0793d30a8b5e2))

	/* 0x1000-01fff is intentionally left as 0xff fill for the bg regions */
	ROM_REGION(0x2000, "bg0", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-1.3l", 0x0000, 0x1000, CRC(c46a7f72) SHA1(8bb7c9acaf6833fb6c0575b015991b873a305a84))

	ROM_REGION(0x2000, "bg1", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-2.3k", 0x0000, 0x1000, CRC(c7aa1fb0) SHA1(14c6c76e1d0db2c0745e5d6d33ea6945fac8e9ee))

	ROM_REGION(0x2000, "bg2", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-3.3h", 0x0000, 0x1000, CRC(a0919392) SHA1(8a090cb8d483a3d67c7360058e3fdd70e151cd62))

	ROM_REGION(0x0200, "tx_pal", 0)
	ROM_LOAD("mpc-4.2a", 0x0000, 0x0200, CRC(07f99284) SHA1(dfc52958f2520e1ce4446dd4c84c91413bbacf76))

	ROM_REGION(0x0020, "bg_pal", 0)
	ROM_LOAD("mpc-3.1m", 0x0000, 0x0020, CRC(6a57eff2) SHA1(2d1c12dab5915da2ccd466e39436c88be434d634))

	ROM_REGION(0x0020, "spr_pal", 0)
	ROM_LOAD("mpc-1.1f", 0x0000, 0x0020, CRC(26979b13) SHA1(8c41a8cce4f3384c392a9f7a223a50d7be0e14a5))

	ROM_REGION(0x0100, "spr_clut", 0)
	ROM_LOAD("mpc-2.2h", 0x0000, 0x0100, CRC(7ae4cd97) SHA1(bc0662fac82ffe65f02092d912b2c2b0c7a8ac2b))
ROM_END

ROM_START(mpatrolw)
	ROM_REGION(0x10000, "maincpu", 0)
	ROM_LOAD("mpa-1w.3m", 0x0000, 0x1000, CRC(baa1a1d4) SHA1(7968a7f221e7f4c9c81ddc8de17f6568e17b9ea8))
	ROM_LOAD("mpa-2w.3l", 0x1000, 0x1000, CRC(52459e51) SHA1(ae685b7848baa1b87a3f2bce97356286171e16d4))
	ROM_LOAD("mpa-3w.3k", 0x2000, 0x1000, CRC(9b249fe5) SHA1(c01e0d572c4c163f3cf4b2aa9f4246427811b78d))
	ROM_LOAD("mpa-4w.3j", 0x3000, 0x1000, CRC(fee76972) SHA1(c3166b027f89f61964ead804d3c2da387454c4c2))

	ROM_REGION(0x8000, "irem_audio:iremsound", 0)
	ROM_LOAD("mp-s1.1a", 0x7000, 0x1000, CRC(561d3108) SHA1(4998c68a9e9a8002251fa8f07aa1082444a9dc80))

	ROM_REGION(0x2000, "tx", 0)
	ROM_LOAD("mpe-5w.3e", 0x0000, 0x1000, CRC(f56e01fe) SHA1(93f582d63b9cd5c6dca207aa57b213c939cdda1d))
	ROM_LOAD("mpe-4w.3f", 0x1000, 0x1000, CRC(caaba2d9) SHA1(7016a26c2d01e3209749598e993cd8ce91f12c88))

	/* 0x2000-0x2fff is intentionally left as 0x00 fill, unused bitplane */
	ROM_REGION(0x3000, "sp", ROMREGION_ERASE00)
	ROM_LOAD("mpb-2.3m", 0x0000, 0x1000, CRC(707ace5e) SHA1(93c682e13e74bce29ced3a87bffb29569c114c3b))
	ROM_LOAD("mpb-1.3n", 0x1000, 0x1000, CRC(9b72133a) SHA1(1393ef92ae1ad58a4b62ca1660c0793d30a8b5e2))

	/* 0x1000-01fff is intentionally left as 0xff fill for the bg regions */
	ROM_REGION(0x2000, "bg0", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-1.3l", 0x0000, 0x1000, CRC(c46a7f72) SHA1(8bb7c9acaf6833fb6c0575b015991b873a305a84))

	ROM_REGION(0x2000, "bg1", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-2.3k", 0x0000, 0x1000, CRC(c7aa1fb0) SHA1(14c6c76e1d0db2c0745e5d6d33ea6945fac8e9ee))

	ROM_REGION(0x2000, "bg2", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-3.3h", 0x0000, 0x1000, CRC(a0919392) SHA1(8a090cb8d483a3d67c7360058e3fdd70e151cd62))

	ROM_REGION(0x0200, "tx_pal", 0)
	ROM_LOAD("mpc-4a.2a", 0x0000, 0x0200, CRC(cb0a5ff3) SHA1(d3f88b4e0c4858abac8b52105656ecece0cf4df9))

	ROM_REGION(0x0020, "bg_pal", 0)
	ROM_LOAD("mpc-3.1m", 0x0000, 0x0020, CRC(6a57eff2) SHA1(2d1c12dab5915da2ccd466e39436c88be434d634))

	ROM_REGION(0x0020, "spr_pal", 0)
	ROM_LOAD("mpc-1.1f", 0x0000, 0x0020, CRC(26979b13) SHA1(8c41a8cce4f3384c392a9f7a223a50d7be0e14a5))

	ROM_REGION(0x0100, "spr_clut", 0)
	ROM_LOAD("mpc-2.2h", 0x0000, 0x0100, CRC(7ae4cd97) SHA1(bc0662fac82ffe65f02092d912b2c2b0c7a8ac2b))
ROM_END

ROM_START(mranger)
	ROM_REGION(0x10000, "maincpu", 0)
	ROM_LOAD("mpa-1.3m", 0x0000, 0x1000, CRC(5873a860) SHA1(8c03726d6e049c3edbc277440184e31679f78258))
	ROM_LOAD("mra-2.3l", 0x1000, 0x1000, CRC(217dd431) SHA1(7b81f854209afc1fd3df11b7375f36de6bc4a7c3))
	ROM_LOAD("mra-3.3k", 0x2000, 0x1000, CRC(9f0af7b2) SHA1(3daaec15b0d3bc30723ebb14b50f66f288f0d096))
	ROM_LOAD("mra-4.3j", 0x3000, 0x1000, CRC(7fe8e2cd) SHA1(4ffad9c7a9360999b213b790c6c76cc79c8e49d5))

	ROM_REGION(0x8000, "irem_audio:iremsound", 0)
	ROM_LOAD("mp-s1.1a", 0x7000, 0x1000, CRC(561d3108) SHA1(4998c68a9e9a8002251fa8f07aa1082444a9dc80))

	ROM_REGION(0x2000, "tx", 0)
	ROM_LOAD("mpe-5.3e", 0x0000, 0x1000, CRC(e3ee7f75) SHA1(b03d0d56150d3e9da4a4c871338097b4f450b649))
	ROM_LOAD("mpe-4.3f", 0x1000, 0x1000, CRC(cca6d023) SHA1(fecb3059fb09897a096add9452b50aec55c07545))

	/* 0x2000-0x2fff is intentionally left as 0x00 fill, unused bitplane */
	ROM_REGION(0x3000, "sp", ROMREGION_ERASE00)
	ROM_LOAD("mpb-2.3m", 0x0000, 0x1000, CRC(707ace5e) SHA1(93c682e13e74bce29ced3a87bffb29569c114c3b))
	ROM_LOAD("mpb-1.3n", 0x1000, 0x1000, CRC(9b72133a) SHA1(1393ef92ae1ad58a4b62ca1660c0793d30a8b5e2))

	/* 0x1000-01fff is intentionally left as 0xff fill for the bg regions */
	ROM_REGION(0x2000, "bg0", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-1.3l", 0x0000, 0x1000, CRC(c46a7f72) SHA1(8bb7c9acaf6833fb6c0575b015991b873a305a84))

	ROM_REGION(0x2000, "bg1", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-2.3k", 0x0000, 0x1000, CRC(c7aa1fb0) SHA1(14c6c76e1d0db2c0745e5d6d33ea6945fac8e9ee))

	ROM_REGION(0x2000, "bg2", ROMREGION_ERASEFF)
	ROM_LOAD("mpe-3.3h", 0x0000, 0x1000, CRC(a0919392) SHA1(8a090cb8d483a3d67c7360058e3fdd70e151cd62))

	ROM_REGION(0x0200, "tx_pal", 0)
	ROM_LOAD("mpc-4.2a", 0x0000, 0x0200, CRC(07f99284) SHA1(dfc52958f2520e1ce4446dd4c84c91413bbacf76))

	ROM_REGION(0x0020, "bg_pal", 0)
	ROM_LOAD("mpc-3.1m", 0x0000, 0x0020, CRC(6a57eff2) SHA1(2d1c12dab5915da2ccd466e39436c88be434d634))

	ROM_REGION(0x0020, "spr_pal", 0)
	ROM_LOAD("mpc-1.1f", 0x0000, 0x0020, CRC(26979b13) SHA1(8c41a8cce4f3384c392a9f7a223a50d7be0e14a5))

	ROM_REGION(0x0100, "spr_clut", 0)
	ROM_LOAD("mpc-2.2h", 0x0000, 0x0100, CRC(7ae4cd97) SHA1(bc0662fac82ffe65f02092d912b2c2b0c7a8ac2b))
ROM_END


ROM_START(alpha1v)
	ROM_REGION(0x10000, "maincpu", 0)
	ROM_LOAD("2-m3",  0x0000, 0x1000, CRC(3a679d34) SHA1(1a54a43070c56dc91d4d258f29e29613bb309f1c))
	ROM_LOAD("3-l3",  0x1000, 0x1000, CRC(2f09df64) SHA1(e91602e9e41ad24dd1d7f384ed81b9bdaadd03e1))
	ROM_LOAD("4-k3",  0x2000, 0x1000, CRC(64fb9c8a) SHA1(735fd00cc42193a417e6cde75f12b4cf2e804942))
	ROM_LOAD("5-j3",  0x3000, 0x1000, CRC(d1643d18) SHA1(7c794b82e17e2ba0a6237e3fc20d8314f6c2481c))
	ROM_LOAD("6-h3",  0x4000, 0x1000, CRC(cf34ab51) SHA1(3696da71e2bc7edd1ee7aeaac87be5386608c09e))
	ROM_LOAD("7-f3",  0x5000, 0x1000, CRC(99db9781) SHA1(a56a675cc4cbc9681bfe8052f51f19336eb2a0a6))
	ROM_LOAD("7a e3", 0x6000, 0x1000, CRC(3b0b4b0d) SHA1(0d8eea1e2db269943611289b3490a578ee347f85))

	ROM_REGION(0x8000, "irem_audio:iremsound", 0)
	ROM_LOAD("1-a1", 0x7000, 0x1000, CRC(9e07fdd5) SHA1(ed4f462fcfe91fa8e88bfeaaba0a0c11fa0b4601))

	ROM_REGION(0x2000, "tx", 0)
	ROM_LOAD("14-e3", 0x0000, 0x1000, CRC(cf00c737) SHA1(415e90289039cac4d04cb1d559f1378ca6a32132))
	ROM_LOAD("13-f3", 0x1000, 0x1000, CRC(4b799229) SHA1(42cbdcf787b08b041d30504d699a12c378224933))

	ROM_REGION(0x3000, "sp", 0) // 3bpp (mpatrol is 2bpp)
	ROM_LOAD("15-n3", 0x0000, 0x1000, CRC(dc26df76) SHA1(dd1cff7935f5559f9d1b440e02d5e5aa521b0054))
	ROM_LOAD("16-l3", 0x1000, 0x1000, CRC(39b9863b) SHA1(da9da9a1066188f050c422dfed1bbbd3ba612ccc))
	ROM_LOAD("17-k3", 0x2000, 0x1000, CRC(cfd90773) SHA1(052e126888b6de636db9c521a090699c282b620b))

	/* all the background roms just contain stars, looks like it wants 2x128 px high images, instead of 3x64, arrangement unclear */
	ROM_REGION(0x2000, "bg0", ROMREGION_ERASEFF)
	ROM_LOAD("11-k3",  0x0000, 0x1000, CRC(7659440a) SHA1(2efd27c82913513dd03e799f1ed3c10b0863677d)) // rom is duplicated
	ROM_LOAD("12-jh3", 0x1000, 0x1000, CRC(7659440a) SHA1(2efd27c82913513dd03e799f1ed3c10b0863677d))

	ROM_REGION(0x2000, "bg1", ROMREGION_ERASEFF)
	ROM_LOAD("9-n3",   0x0000, 0x1000, CRC(0fdb7d13) SHA1(e828254a4f94df633d338b5772719276d41c6b7f))
	ROM_LOAD("10-lm3", 0x1000, 0x1000, CRC(9dde3a75) SHA1(293d093485be19bfb20685d76a08ac78e24062bf))

	ROM_REGION(0x2000, "bg2", ROMREGION_ERASEFF)
	// unused layer

	ROM_REGION(0x0200, "tx_pal", 0)
	ROM_LOAD("63s481-a2", 0x0000, 0x0200, CRC(58678ea8) SHA1(b13a78a5bca8ad5bdec1293512b53654768a7a7a))

	ROM_REGION(0x0020, "bg_pal", 0)
	ROM_LOAD("18s030-m1", 0x0000, 0x0020, CRC(6a57eff2) SHA1(2d1c12dab5915da2ccd466e39436c88be434d634))

	ROM_REGION(0x0020, "spr_pal", 0)
	ROM_LOAD("mb7051-f1", 0x0000, 0x0020, CRC(d8bdd0df) SHA1(ca522428927911808214d319af314f601497ded4))

	ROM_REGION(0x0100, "spr_clut", 0)
	ROM_LOAD("mb7052-h2", 0x0000, 0x0100, CRC(ce9f0ef9) SHA1(3afb94ed033f272983bbed22a59856df7824ef8a))
ROM_END


/*************************************
*
*  Game drivers
*
*************************************/

GAME(1982, mpatrol,  0,       m52,     mpatrol,  m52_state,         empty_init, ROT0, "Irem",                    "Moon Patrol", MACHINE_SUPPORTS_SAVE)
GAME(1982, mpatrolw, mpatrol, m52,     mpatrolw, m52_state,         empty_init, ROT0, "Irem (Williams license)", "Moon Patrol (Williams)", MACHINE_SUPPORTS_SAVE) // USA
GAME(1982, mranger,  mpatrol, m52,     mpatrol,  m52_state,         empty_init, ROT0, "bootleg",                 "Moon Ranger (bootleg of Moon Patrol)", MACHINE_SUPPORTS_SAVE) // Italy

GAME(1988, alpha1v,  0,       alpha1v, alpha1v,  m52_alpha1v_state, empty_init, ROT0, "Vision Electronics",      "Alpha One (Vision Electronics)", MACHINE_SUPPORTS_SAVE)