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

  The Main Event, (c) 1988 Konami
  Devastators, (c) 1988 Konami

Emulation by Bryan McPhail, mish@tendril.co.uk

Notes:
- Schematics show a palette/work RAM bank selector, but this doesn't seem
  to be used?

- In Devastators, shadows don't work. Bit 7 of the sprite attribute is always 0,
  could there be a global enable flag in the 051960?
  This is particularly evident in level 2 where plane shadows cover other sprites.
  The priority/shadow encoder PROM is quite complex, however bits 5-7 of the sprite
  attribute don't seem to be used, at least not in the first two levels, so the
  PROM just maps to the fixed priority order currently implemented.

- In Devastators, sprite zooming for the planes in level 2 is particularly bad.

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

#include "driver.h"
#include "cpu/z80/z80.h"
#include "cpu/hd6309/hd6309.h"
#include "deprecat.h"
#include "video/konamiic.h"
#include "cpu/m6809/m6809.h"
#include "sound/2151intf.h"
#include "sound/k007232.h"
#include "sound/upd7759.h"
#include "konamipt.h"

VIDEO_UPDATE( mainevt );
VIDEO_UPDATE( dv );
VIDEO_START( mainevt );
VIDEO_START( dv );



static INTERRUPT_GEN( mainevt_interrupt )
{
	if (K052109_is_IRQ_enabled())
		irq0_line_hold(device);
}


static int nmi_enable;

static WRITE8_HANDLER( dv_nmienable_w )
{
	nmi_enable = data;
}

static INTERRUPT_GEN( dv_interrupt )
{
	if (nmi_enable)
		nmi_line_pulse(device);
}


static WRITE8_HANDLER( mainevt_bankswitch_w )
{
	UINT8 *RAM = memory_region(space->machine, "maincpu");
	int bankaddress;

	/* bit 0-1 ROM bank select */
	bankaddress = 0x10000 + (data & 0x03) * 0x2000;
	memory_set_bankptr(space->machine, 1,&RAM[bankaddress]);

	/* TODO: bit 5 = select work RAM or palette? */
//  palette_selected = data & 0x20;

	/* bit 6 = enable char ROM reading through the video RAM */
	K052109_set_RMRD_line((data & 0x40) ? ASSERT_LINE : CLEAR_LINE);

	/* bit 7 = NINITSET (unknown) */

	/* other bits unused */
}

static WRITE8_HANDLER( mainevt_coin_w )
{
	coin_counter_w(0,data & 0x10);
	coin_counter_w(1,data & 0x20);
	set_led_status(0,data & 0x01);
	set_led_status(1,data & 0x02);
	set_led_status(2,data & 0x04);
	set_led_status(3,data & 0x08);
}

static WRITE8_HANDLER( mainevt_sh_irqtrigger_w )
{
	cpu_set_input_line_and_vector(space->machine->cpu[1],0,HOLD_LINE,0xff);
}

static READ8_DEVICE_HANDLER( mainevt_sh_busy_r )
{
	return upd7759_busy_r(device);
}

static WRITE8_HANDLER( mainevt_sh_irqcontrol_w )
{
	const device_config *upd = devtag_get_device(space->machine, "upd");
	upd7759_reset_w(upd, data & 2);
	upd7759_start_w(upd, data & 1);

	interrupt_enable_w(space,0,data & 4);
}

static WRITE8_HANDLER( devstor_sh_irqcontrol_w )
{
	interrupt_enable_w(space,0,data & 4);
}

static WRITE8_HANDLER( mainevt_sh_bankswitch_w )
{
	int bank_A,bank_B;

//logerror("CPU #1 PC: %04x bank switch = %02x\n",cpu_get_pc(space->cpu),data);

	/* bits 0-3 select the 007232 banks */
	bank_A=(data&0x3);
	bank_B=((data>>2)&0x3);
	k007232_set_bank( devtag_get_device(space->machine, "konami"), bank_A, bank_B );

	/* bits 4-5 select the UPD7759 bank */
	upd7759_set_bank_base(devtag_get_device(space->machine, "upd"), ((data >> 4) & 0x03) * 0x20000);
}

static WRITE8_DEVICE_HANDLER( dv_sh_bankswitch_w )
{
	int bank_A,bank_B;

//logerror("CPU #1 PC: %04x bank switch = %02x\n",cpu_get_pc(space->cpu),data);

	/* bits 0-3 select the 007232 banks */
	bank_A=(data&0x3);
	bank_B=((data>>2)&0x3);
	k007232_set_bank( device, bank_A, bank_B );
}


static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x1f94, 0x1f94) AM_READ_PORT("SYSTEM")
	AM_RANGE(0x1f95, 0x1f95) AM_READ_PORT("P1")
	AM_RANGE(0x1f96, 0x1f96) AM_READ_PORT("P2")
	AM_RANGE(0x1f97, 0x1f97) AM_READ_PORT("DSW1")
	AM_RANGE(0x1f98, 0x1f98) AM_READ_PORT("DSW3")
	AM_RANGE(0x1f99, 0x1f99) AM_READ_PORT("P3")
	AM_RANGE(0x1f9a, 0x1f9a) AM_READ_PORT("P4")
	AM_RANGE(0x1f9b, 0x1f9b) AM_READ_PORT("DSW2")

	AM_RANGE(0x0000, 0x3fff) AM_READ(K052109_051960_r)
	AM_RANGE(0x4000, 0x5fff) AM_READ(SMH_RAM)
	AM_RANGE(0x6000, 0x7fff) AM_READ(SMH_BANK1)
	AM_RANGE(0x8000, 0xffff) AM_READ(SMH_ROM)
ADDRESS_MAP_END

static ADDRESS_MAP_START( writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x1f80, 0x1f80) AM_WRITE(mainevt_bankswitch_w)
	AM_RANGE(0x1f84, 0x1f84) AM_WRITE(soundlatch_w)				/* probably */
	AM_RANGE(0x1f88, 0x1f88) AM_WRITE(mainevt_sh_irqtrigger_w)	/* probably */
	AM_RANGE(0x1f8c, 0x1f8d) AM_WRITENOP	/* ??? */
	AM_RANGE(0x1f90, 0x1f90) AM_WRITE(mainevt_coin_w)	/* coin counters + lamps */

	AM_RANGE(0x0000, 0x3fff) AM_WRITE(K052109_051960_w)
	AM_RANGE(0x4000, 0x5dff) AM_WRITE(SMH_RAM)
	AM_RANGE(0x5e00, 0x5fff) AM_WRITE(paletteram_xBBBBBGGGGGRRRRR_be_w) AM_BASE(&paletteram)
 	AM_RANGE(0x6000, 0xffff) AM_WRITE(SMH_ROM)
ADDRESS_MAP_END


static ADDRESS_MAP_START( dv_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x1f94, 0x1f94) AM_READ_PORT("SYSTEM")
	AM_RANGE(0x1f95, 0x1f95) AM_READ_PORT("P1")
	AM_RANGE(0x1f96, 0x1f96) AM_READ_PORT("P2")
	AM_RANGE(0x1f97, 0x1f97) AM_READ_PORT("DSW1")
	AM_RANGE(0x1f98, 0x1f98) AM_READ_PORT("DSW3")
	AM_RANGE(0x1f9b, 0x1f9b) AM_READ_PORT("DSW2")
	AM_RANGE(0x1fa0, 0x1fbf) AM_READ(K051733_r)

	AM_RANGE(0x0000, 0x3fff) AM_READ(K052109_051960_r)
	AM_RANGE(0x4000, 0x5fff) AM_READ(SMH_RAM)
	AM_RANGE(0x6000, 0x7fff) AM_READ(SMH_BANK1)
	AM_RANGE(0x8000, 0xffff) AM_READ(SMH_ROM)
ADDRESS_MAP_END

static ADDRESS_MAP_START( dv_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x1f80, 0x1f80) AM_WRITE(mainevt_bankswitch_w)
	AM_RANGE(0x1f84, 0x1f84) AM_WRITE(soundlatch_w)				/* probably */
	AM_RANGE(0x1f88, 0x1f88) AM_WRITE(mainevt_sh_irqtrigger_w)	/* probably */
	AM_RANGE(0x1f90, 0x1f90) AM_WRITE(mainevt_coin_w)	/* coin counters + lamps */
	AM_RANGE(0x1fb2, 0x1fb2) AM_WRITE(dv_nmienable_w)
	AM_RANGE(0x1fa0, 0x1fbf) AM_WRITE(K051733_w)

	AM_RANGE(0x0000, 0x3fff) AM_WRITE(K052109_051960_w)
	AM_RANGE(0x4000, 0x5dff) AM_WRITE(SMH_RAM)
	AM_RANGE(0x5e00, 0x5fff) AM_WRITE(paletteram_xBBBBBGGGGGRRRRR_be_w) AM_BASE(&paletteram)
	AM_RANGE(0x6000, 0xffff) AM_WRITE(SMH_ROM)
ADDRESS_MAP_END


static ADDRESS_MAP_START( sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_READ(SMH_ROM)
	AM_RANGE(0x8000, 0x83ff) AM_READ(SMH_RAM)
	AM_RANGE(0xa000, 0xa000) AM_READ(soundlatch_r)
	AM_RANGE(0xb000, 0xb00d) AM_DEVREAD("konami", k007232_r)
	AM_RANGE(0xd000, 0xd000) AM_DEVREAD("upd", mainevt_sh_busy_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START( sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_WRITE(SMH_ROM)
	AM_RANGE(0x8000, 0x83ff) AM_WRITE(SMH_RAM)
	AM_RANGE(0xb000, 0xb00d) AM_DEVWRITE("konami", k007232_w)
	AM_RANGE(0x9000, 0x9000) AM_DEVWRITE("upd", upd7759_port_w)
	AM_RANGE(0xe000, 0xe000) AM_WRITE(mainevt_sh_irqcontrol_w)
	AM_RANGE(0xf000, 0xf000) AM_WRITE(mainevt_sh_bankswitch_w)
ADDRESS_MAP_END

static ADDRESS_MAP_START( dv_sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_READ(SMH_ROM)
	AM_RANGE(0x8000, 0x83ff) AM_READ(SMH_RAM)
	AM_RANGE(0xa000, 0xa000) AM_READ(soundlatch_r)
	AM_RANGE(0xb000, 0xb00d) AM_DEVREAD("konami", k007232_r)
	AM_RANGE(0xc000, 0xc001) AM_DEVREAD("ym", ym2151_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START( dv_sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_WRITE(SMH_ROM)
	AM_RANGE(0x8000, 0x83ff) AM_WRITE(SMH_RAM)
	AM_RANGE(0xb000, 0xb00d) AM_DEVWRITE("konami", k007232_w)
	AM_RANGE(0xc000, 0xc001) AM_DEVWRITE("ym", ym2151_w)
	AM_RANGE(0xe000, 0xe000) AM_WRITE(devstor_sh_irqcontrol_w)
	AM_RANGE(0xf000, 0xf000) AM_DEVWRITE("konami", dv_sh_bankswitch_w)
ADDRESS_MAP_END



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

static INPUT_PORTS_START( mainevt )
	PORT_START("SYSTEM")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_COIN4 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_SERVICE3 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_SERVICE4 )

	PORT_START("P1")
	KONAMI8_B21_UNK(1)

	PORT_START("P2")
	KONAMI8_B21_UNK(2)

	PORT_START("P3")
	KONAMI8_B21_UNK(3)

	PORT_START("P4")
	KONAMI8_B21_UNK(4)

	PORT_START("DSW1")
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0x0f, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_5C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x0e, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0x0d, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x0b, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x0a, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x09, DEF_STR( 1C_7C ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

 	PORT_START("DSW2")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x18, 0x10, "Bonus Energy" )
	PORT_DIPSETTING(    0x00, "60" )
	PORT_DIPSETTING(    0x08, "70" )
	PORT_DIPSETTING(    0x10, "80" )
	PORT_DIPSETTING(    0x18, "90" )
	PORT_DIPNAME( 0x60, 0x40, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x60, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Very_Hard ) )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START("DSW3")
	PORT_DIPNAME( 0x01, 0x01, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_SERVICE( 0x04, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED )
INPUT_PORTS_END

static INPUT_PORTS_START( mainev2p )
	PORT_INCLUDE( mainevt )

	PORT_MODIFY("SYSTEM")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* no keys for P3 & P4 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_MODIFY("P1")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_MODIFY("P2")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )

	PORT_MODIFY("P3")
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_MODIFY("P4")
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_MODIFY("DSW1")
	KONAMI_COINAGE_ALT
INPUT_PORTS_END

static INPUT_PORTS_START( devstors )
	PORT_INCLUDE( mainev2p )

	PORT_MODIFY("SYSTEM")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* no service2 */

	PORT_MODIFY("P1")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* no 3rd button */

	PORT_MODIFY("P2")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* no 3rd button */

	PORT_MODIFY("P3")
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_MODIFY("P4")
	PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_MODIFY("DSW1")		/* like mainevt, but different 0x00 settings */
	KONAMI_COINAGE(DEF_STR( Free_Play ), "Invalid")
	/* "Invalid" = both coin slots disabled */

	PORT_MODIFY("DSW2")
	PORT_DIPNAME( 0x03, 0x02, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x02, "3" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_DIPSETTING(    0x00, "7" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x18, 0x18, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x18, "150 and every 200" )
	PORT_DIPSETTING(    0x10, "150 and every 250" )
	PORT_DIPSETTING(    0x08, "150 Only" )
	PORT_DIPSETTING(    0x00, "200 Only" )
INPUT_PORTS_END

/* Same as 'devstors', but additional "Cocktail" Dip Switch (even if I don't see the use) */
static INPUT_PORTS_START( devstor2 )
	PORT_INCLUDE( devstors )

 	PORT_MODIFY("DSW2")
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Cocktail ) )
INPUT_PORTS_END

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

static void volume_callback(const device_config *device, int v)
{
	k007232_set_volume(device,0,(v >> 4) * 0x11,0);
	k007232_set_volume(device,1,0,(v & 0x0f) * 0x11);
}

static const k007232_interface k007232_config =
{
	volume_callback	/* external port callback */
};

static MACHINE_DRIVER_START( mainevt )

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", HD6309, 3000000*4)	/* ?? */
	MDRV_CPU_PROGRAM_MAP(readmem,writemem)
	MDRV_CPU_VBLANK_INT("screen", mainevt_interrupt)

	MDRV_CPU_ADD("audiocpu", Z80, 3579545)	/* 3.579545 MHz */
	MDRV_CPU_PROGRAM_MAP(sound_readmem,sound_writemem)
	MDRV_CPU_VBLANK_INT_HACK(nmi_line_pulse,8)	/* ??? */

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_HAS_SHADOWS)

	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(64*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(14*8, (64-14)*8-1, 2*8, 30*8-1 )

	MDRV_PALETTE_LENGTH(256)

	MDRV_VIDEO_START(mainevt)
	MDRV_VIDEO_UPDATE(mainevt)

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

	MDRV_SOUND_ADD("konami", K007232, 3579545)
	MDRV_SOUND_CONFIG(k007232_config)
	MDRV_SOUND_ROUTE(0, "mono", 0.20)
	MDRV_SOUND_ROUTE(1, "mono", 0.20)

	MDRV_SOUND_ADD("upd", UPD7759, UPD7759_STANDARD_CLOCK)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( devstors )

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", HD6309, 3000000*4)	/* ?? */
	MDRV_CPU_PROGRAM_MAP(dv_readmem,dv_writemem)
	MDRV_CPU_VBLANK_INT("screen", dv_interrupt)

	MDRV_CPU_ADD("audiocpu", Z80, 3579545)	/* 3.579545 MHz */
	MDRV_CPU_PROGRAM_MAP(dv_sound_readmem,dv_sound_writemem)
	MDRV_CPU_VBLANK_INT_HACK(irq0_line_hold,4)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_HAS_SHADOWS)

	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0))
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(64*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(13*8, (64-13)*8-1, 2*8, 30*8-1 )

	MDRV_PALETTE_LENGTH(256)

	MDRV_VIDEO_START(dv)
	MDRV_VIDEO_UPDATE(dv)

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

	MDRV_SOUND_ADD("ym", YM2151, 3579545)
	MDRV_SOUND_ROUTE(0, "mono", 0.30)
	MDRV_SOUND_ROUTE(1, "mono", 0.30)

	MDRV_SOUND_ADD("konami", K007232, 3579545)
	MDRV_SOUND_CONFIG(k007232_config)
	MDRV_SOUND_ROUTE(0, "mono", 0.20)
	MDRV_SOUND_ROUTE(1, "mono", 0.20)
MACHINE_DRIVER_END



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

  Game driver(s)

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

/* 4 players - English title screen - No "Warning" message in the ROM */

ROM_START( mainevt )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "799c02.k11",   0x10000, 0x08000, CRC(e2e7dbd5) SHA1(80314cd42a9f47f7bb82a2160fb5ef2ddc6dff30) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "799c01.f7",    0x00000, 0x08000, CRC(447c4c5c) SHA1(86e42132793c59cc6feece143516f7ecd4ed14e8) )

	ROM_REGION( 0x20000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "799c06.f22",   0x00000, 0x08000, CRC(f839cb58) SHA1(b36202ca2b68b6249c3f972ad09501e28a0162f7) )
	ROM_LOAD16_BYTE( "799c07.h22",   0x00001, 0x08000, CRC(176df538) SHA1(379e1de81afb85b1559de170cd2ab9f4af2b137e) )
	ROM_LOAD16_BYTE( "799c08.j22",   0x10000, 0x08000, CRC(d01e0078) SHA1(7ac242eb24271ac2783ec4d9e97ae051f1f3363a) )
	ROM_LOAD16_BYTE( "799c09.k22",   0x10001, 0x08000, CRC(9baec75e) SHA1(a8f6102c8fd46f18678f336bc44be31458ca9256) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "799b04.h4",    0x00000, 0x80000, CRC(323e0c2b) SHA1(c108d656b6ceff13c910739e4ca760acbb640de3) )
	ROM_LOAD( "799b05.k4",    0x80000, 0x80000, CRC(571c5831) SHA1(2a18f0bcf6946ada6e0bde7edbd11afd4db1c170) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14",  0x0000, 0x0100, CRC(61f6c8d1) SHA1(c70f1f8e434aaaffb89e30e2230a08374ef324ad) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
	ROM_LOAD( "799b03.d4",    0x00000, 0x80000, CRC(f1cfd342) SHA1(079afc5c631de7f5b652d0ce6fd44b3aacd14a1b) )

	ROM_REGION( 0x80000, "upd", 0 )	/* 512k for the UPD7759C samples */
	ROM_LOAD( "799b06.c22",   0x00000, 0x80000, CRC(2c8c47d7) SHA1(18a899767177ddfd870df9ed156d8bbc04b58a19) )
ROM_END


/* 4 players - English title screen - No "Warning" message in the ROM */

ROM_START( mainevto )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "799_02.k11",   0x10000, 0x08000, CRC(c143596b) SHA1(5da7efaf0f7c7a493cc242eae115f278bc9c134b) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "799c01.f7",    0x00000, 0x08000, CRC(447c4c5c) SHA1(86e42132793c59cc6feece143516f7ecd4ed14e8) )

	ROM_REGION( 0x20000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "799c06.f22",   0x00000, 0x08000, CRC(f839cb58) SHA1(b36202ca2b68b6249c3f972ad09501e28a0162f7) )
	ROM_LOAD16_BYTE( "799c07.h22",   0x00001, 0x08000, CRC(176df538) SHA1(379e1de81afb85b1559de170cd2ab9f4af2b137e) )
	ROM_LOAD16_BYTE( "799c08.j22",   0x10000, 0x08000, CRC(d01e0078) SHA1(7ac242eb24271ac2783ec4d9e97ae051f1f3363a) )
	ROM_LOAD16_BYTE( "799c09.k22",   0x10001, 0x08000, CRC(9baec75e) SHA1(a8f6102c8fd46f18678f336bc44be31458ca9256) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "799b04.h4",    0x00000, 0x80000, CRC(323e0c2b) SHA1(c108d656b6ceff13c910739e4ca760acbb640de3) )
	ROM_LOAD( "799b05.k4",    0x80000, 0x80000, CRC(571c5831) SHA1(2a18f0bcf6946ada6e0bde7edbd11afd4db1c170) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14",  0x0000, 0x0100, CRC(61f6c8d1) SHA1(c70f1f8e434aaaffb89e30e2230a08374ef324ad) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
	ROM_LOAD( "799b03.d4",    0x00000, 0x80000, CRC(f1cfd342) SHA1(079afc5c631de7f5b652d0ce6fd44b3aacd14a1b) )

	ROM_REGION( 0x80000, "upd", 0 )	/* 512k for the UPD7759C samples */
	ROM_LOAD( "799b06.c22",   0x00000, 0x80000, CRC(2c8c47d7) SHA1(18a899767177ddfd870df9ed156d8bbc04b58a19) )
ROM_END


/* 2 players - English title screen - "Warning" message in the ROM (not displayed) */

ROM_START( mainev2p )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "799x02.k11",   0x10000, 0x08000, CRC(42cfc650) SHA1(2d1918ebc0d93a2356ad995a6854dbde7c3b8daf) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "799c01.f7",    0x00000, 0x08000, CRC(447c4c5c) SHA1(86e42132793c59cc6feece143516f7ecd4ed14e8) )

	ROM_REGION( 0x20000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "799c06.f22",   0x00000, 0x08000, CRC(f839cb58) SHA1(b36202ca2b68b6249c3f972ad09501e28a0162f7) )
	ROM_LOAD16_BYTE( "799c07.h22",   0x00001, 0x08000, CRC(176df538) SHA1(379e1de81afb85b1559de170cd2ab9f4af2b137e) )
	ROM_LOAD16_BYTE( "799c08.j22",   0x10000, 0x08000, CRC(d01e0078) SHA1(7ac242eb24271ac2783ec4d9e97ae051f1f3363a) )
	ROM_LOAD16_BYTE( "799c09.k22",   0x10001, 0x08000, CRC(9baec75e) SHA1(a8f6102c8fd46f18678f336bc44be31458ca9256) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "799b04.h4",    0x00000, 0x80000, CRC(323e0c2b) SHA1(c108d656b6ceff13c910739e4ca760acbb640de3) )
	ROM_LOAD( "799b05.k4",    0x80000, 0x80000, CRC(571c5831) SHA1(2a18f0bcf6946ada6e0bde7edbd11afd4db1c170) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14",  0x0000, 0x0100, CRC(61f6c8d1) SHA1(c70f1f8e434aaaffb89e30e2230a08374ef324ad) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
	ROM_LOAD( "799b03.d4",    0x00000, 0x80000, CRC(f1cfd342) SHA1(079afc5c631de7f5b652d0ce6fd44b3aacd14a1b) )

	ROM_REGION( 0x80000, "upd", 0 )	/* 512k for the UPD7759C samples */
	ROM_LOAD( "799b06.c22",   0x00000, 0x80000, CRC(2c8c47d7) SHA1(18a899767177ddfd870df9ed156d8bbc04b58a19) )
ROM_END


/* 2 players - Japan title screen - "Warning" message in the ROM (displayed) */

ROM_START( ringohja )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "799n02.k11",   0x10000, 0x08000, CRC(f9305dd0) SHA1(7135053be9d46ac9c09ab63eca1eb71825a71a13) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "799c01.f7",    0x00000, 0x08000, CRC(447c4c5c) SHA1(86e42132793c59cc6feece143516f7ecd4ed14e8) )

	ROM_REGION( 0x20000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "799c06.f22",   0x00000, 0x08000, CRC(f839cb58) SHA1(b36202ca2b68b6249c3f972ad09501e28a0162f7) )
	ROM_LOAD16_BYTE( "799c07.h22",   0x00001, 0x08000, CRC(176df538) SHA1(379e1de81afb85b1559de170cd2ab9f4af2b137e) )
	ROM_LOAD16_BYTE( "799c08.j22",   0x10000, 0x08000, CRC(d01e0078) SHA1(7ac242eb24271ac2783ec4d9e97ae051f1f3363a) )
	ROM_LOAD16_BYTE( "799c09.k22",   0x10001, 0x08000, CRC(9baec75e) SHA1(a8f6102c8fd46f18678f336bc44be31458ca9256) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "799b04.h4",    0x00000, 0x80000, CRC(323e0c2b) SHA1(c108d656b6ceff13c910739e4ca760acbb640de3) )
	ROM_LOAD( "799b05.k4",    0x80000, 0x80000, CRC(571c5831) SHA1(2a18f0bcf6946ada6e0bde7edbd11afd4db1c170) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14",  0x0000, 0x0100, CRC(61f6c8d1) SHA1(c70f1f8e434aaaffb89e30e2230a08374ef324ad) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
	ROM_LOAD( "799b03.d4",    0x00000, 0x80000, CRC(f1cfd342) SHA1(079afc5c631de7f5b652d0ce6fd44b3aacd14a1b) )

	ROM_REGION( 0x80000, "upd", 0 )	/* 512k for the UPD7759C samples */
	ROM_LOAD( "799b06.c22",   0x00000, 0x80000, CRC(2c8c47d7) SHA1(18a899767177ddfd870df9ed156d8bbc04b58a19) )
ROM_END

ROM_START( devstors )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "890z02.k11",  0x10000, 0x08000, CRC(ebeb306f) SHA1(838fcfe95dfedd61f21f34301d48e337db765ab2) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "890k01.f7",  0x00000, 0x08000, CRC(d44b3eb0) SHA1(26109fc56668b65f1a5aa6d8ec2c08fd70ca7c51) )

	ROM_REGION( 0x40000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "890f06.f22",  0x00000, 0x10000, CRC(26592155) SHA1(aa1f8662f091ca1eb495223e41a35edd861ae9e9) )
	ROM_LOAD16_BYTE( "890f07.h22",  0x00001, 0x10000, CRC(6c74fa2e) SHA1(419a2ad31d269fafe4c474bf512e935d5e018846) )
	ROM_LOAD16_BYTE( "890f08.j22",  0x20000, 0x10000, CRC(29e12e80) SHA1(6d09e190055218e2dfd07838f1446dfb5f801206) )
	ROM_LOAD16_BYTE( "890f09.k22",  0x20001, 0x10000, CRC(67ca40d5) SHA1(ff719f55d2534ff076fbdd2bcb7d12c683bfe958) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "890f04.h4",  0x00000, 0x80000, CRC(f16cd1fa) SHA1(60ea19c19918a71aded3c9ea398c956908e217f1) )
	ROM_LOAD( "890f05.k4",  0x80000, 0x80000, CRC(da37db05) SHA1(0b48d1021cf0dec78dae0ef183b4c61fea783533) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14", 0x0000, 0x0100, CRC(d3620106) SHA1(528a0a34754902d0f262a9619c6105da6de99354) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
 	ROM_LOAD( "890f03.d4",  0x00000, 0x80000, CRC(19065031) SHA1(12c47fbe28f85fa2f901fe52601188a5e9633f22) )
ROM_END

ROM_START( devstor2 )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "890x02.k11",  0x10000, 0x08000, CRC(e58ebb35) SHA1(4253b6a7128534cc0866bc910a271d91ac8b40fd) )
	ROM_CONTINUE(            0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "890k01.f7",  0x00000, 0x08000, CRC(d44b3eb0) SHA1(26109fc56668b65f1a5aa6d8ec2c08fd70ca7c51) )

	ROM_REGION( 0x40000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "890f06.f22",  0x00000, 0x10000, CRC(26592155) SHA1(aa1f8662f091ca1eb495223e41a35edd861ae9e9) )
	ROM_LOAD16_BYTE( "890f07.h22",  0x00001, 0x10000, CRC(6c74fa2e) SHA1(419a2ad31d269fafe4c474bf512e935d5e018846) )
	ROM_LOAD16_BYTE( "890f08.j22",  0x20000, 0x10000, CRC(29e12e80) SHA1(6d09e190055218e2dfd07838f1446dfb5f801206) )
	ROM_LOAD16_BYTE( "890f09.k22",  0x20001, 0x10000, CRC(67ca40d5) SHA1(ff719f55d2534ff076fbdd2bcb7d12c683bfe958) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "890f04.h4",  0x00000, 0x80000, CRC(f16cd1fa) SHA1(60ea19c19918a71aded3c9ea398c956908e217f1) )
	ROM_LOAD( "890f05.k4",  0x80000, 0x80000, CRC(da37db05) SHA1(0b48d1021cf0dec78dae0ef183b4c61fea783533) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14", 0x0000, 0x0100, CRC(d3620106) SHA1(528a0a34754902d0f262a9619c6105da6de99354) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
 	ROM_LOAD( "890f03.d4",  0x00000, 0x80000, CRC(19065031) SHA1(12c47fbe28f85fa2f901fe52601188a5e9633f22) )
ROM_END

ROM_START( devstor3 )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "890k02.k11",   0x10000, 0x08000, CRC(52f4ccdd) SHA1(074e526ed170a5f2083c8c0808734291a2ea7403) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "890k01.f7",  0x00000, 0x08000, CRC(d44b3eb0) SHA1(26109fc56668b65f1a5aa6d8ec2c08fd70ca7c51) )

	ROM_REGION( 0x40000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "890f06.f22",  0x00000, 0x10000, CRC(26592155) SHA1(aa1f8662f091ca1eb495223e41a35edd861ae9e9) )
	ROM_LOAD16_BYTE( "890f07.h22",  0x00001, 0x10000, CRC(6c74fa2e) SHA1(419a2ad31d269fafe4c474bf512e935d5e018846) )
	ROM_LOAD16_BYTE( "890f08.j22",  0x20000, 0x10000, CRC(29e12e80) SHA1(6d09e190055218e2dfd07838f1446dfb5f801206) )
	ROM_LOAD16_BYTE( "890f09.k22",  0x20001, 0x10000, CRC(67ca40d5) SHA1(ff719f55d2534ff076fbdd2bcb7d12c683bfe958) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "890f04.h4",  0x00000, 0x80000, CRC(f16cd1fa) SHA1(60ea19c19918a71aded3c9ea398c956908e217f1) )
	ROM_LOAD( "890f05.k4",  0x80000, 0x80000, CRC(da37db05) SHA1(0b48d1021cf0dec78dae0ef183b4c61fea783533) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14", 0x0000, 0x0100, CRC(d3620106) SHA1(528a0a34754902d0f262a9619c6105da6de99354) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
 	ROM_LOAD( "890f03.d4",  0x00000, 0x80000, CRC(19065031) SHA1(12c47fbe28f85fa2f901fe52601188a5e9633f22) )
ROM_END

ROM_START( garuka )
	ROM_REGION( 0x40000, "maincpu", 0 )
	ROM_LOAD( "890w02.k11",   0x10000, 0x08000, CRC(b2f6f538) SHA1(95dad3258a2e4c5648d0fc22c06fa3e2da3b5ed1) )
	ROM_CONTINUE(             0x08000, 0x08000 )

	ROM_REGION( 0x10000, "audiocpu", 0 )
	ROM_LOAD( "890k01.f7",  0x00000, 0x08000, CRC(d44b3eb0) SHA1(26109fc56668b65f1a5aa6d8ec2c08fd70ca7c51) )

	ROM_REGION( 0x40000, "gfx1", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD16_BYTE( "890f06.f22",  0x00000, 0x10000, CRC(26592155) SHA1(aa1f8662f091ca1eb495223e41a35edd861ae9e9) )
	ROM_LOAD16_BYTE( "890f07.h22",  0x00001, 0x10000, CRC(6c74fa2e) SHA1(419a2ad31d269fafe4c474bf512e935d5e018846) )
	ROM_LOAD16_BYTE( "890f08.j22",  0x20000, 0x10000, CRC(29e12e80) SHA1(6d09e190055218e2dfd07838f1446dfb5f801206) )
	ROM_LOAD16_BYTE( "890f09.k22",  0x20001, 0x10000, CRC(67ca40d5) SHA1(ff719f55d2534ff076fbdd2bcb7d12c683bfe958) )

	ROM_REGION( 0x100000, "gfx2", 0 )	/* graphics (addressable by the main CPU) */
	ROM_LOAD( "890f04.h4",  0x00000, 0x80000, CRC(f16cd1fa) SHA1(60ea19c19918a71aded3c9ea398c956908e217f1) )
	ROM_LOAD( "890f05.k4",  0x80000, 0x80000, CRC(da37db05) SHA1(0b48d1021cf0dec78dae0ef183b4c61fea783533) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "63s141n.k14", 0x0000, 0x0100, CRC(d3620106) SHA1(528a0a34754902d0f262a9619c6105da6de99354) )	/* priority encoder (not used) */

	ROM_REGION( 0x80000, "konami", 0 )	/* 512k for 007232 samples */
 	ROM_LOAD( "890f03.d4",  0x00000, 0x80000, CRC(19065031) SHA1(12c47fbe28f85fa2f901fe52601188a5e9633f22) )
ROM_END



static DRIVER_INIT( mainevt )
{
	konami_rom_deinterleave_2(machine, "gfx1");
	konami_rom_deinterleave_2(machine, "gfx2");
}



GAME( 1988, mainevt,  0,        mainevt,  mainevt,  mainevt, ROT0,  "Konami", "The Main Event (4 Players ver. Y)", 0 )
GAME( 1988, mainevto, mainevt,  mainevt,  mainevt,  mainevt, ROT0,  "Konami", "The Main Event (4 Players ver. F)", 0 )
GAME( 1988, mainev2p, mainevt,  mainevt,  mainev2p, mainevt, ROT0,  "Konami", "The Main Event (2 Players ver. X)", 0 )
GAME( 1988, ringohja, mainevt,  mainevt,  mainev2p, mainevt, ROT0,  "Konami", "Ring no Ohja (Japan 2 Players ver. N)", 0 )
GAME( 1988, devstors, 0,        devstors, devstors, mainevt, ROT90, "Konami", "Devastators (ver. Z)", 0 )
GAME( 1988, devstor2, devstors, devstors, devstor2, mainevt, ROT90, "Konami", "Devastators (ver. X)", 0 )
GAME( 1988, devstor3, devstors, devstors, devstors, mainevt, ROT90, "Konami", "Devastators (ver. V)", 0 )
GAME( 1988, garuka,   devstors, devstors, devstor2, mainevt, ROT90, "Konami", "Garuka (Japan ver. W)", 0 )
