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

                          -= Fuuki 32 Bit Games (FG-3) =-

                driver by Paul Priest and David Haywood
                based on fuukifg2 by Luca Elia

Hardware is similar to FG-2 used for :
"Go Go! Mile Smile", "Susume! Mile Smile (Japan)" & "Gyakuten!! Puzzle Bancho (Japan)"
See fuukifg2.c

Main  CPU   :   M68020

---------------------------------------------------------------------------
Year + Game
---------------------------------------------------------------------------
98  Asura Blade - Sword of Dynasty
    Asura Buster - Eternal Warriors
---------------------------------------------------------------------------

--
Notes so far:

- Dips, need DIP sheet.

- Raster Effects are imperfect, bad frames when lots of new sprites.

- The scroll values are generally wrong when flip screen is on and rasters are often incorrect

Asura Blade
Fuuki Co. Ltd., 1998

PCB Layout
----------

Top Board

FG-3J MAIN-J Revision:1.1
|-----------------------------------------------------|
|  YAC516  YMF278 N341256(x4) N341028 (x4)    FI-002K |
|  33.8688MHz                 N341512(x4)             |
|   PAL N341256                                       |
|   Z80                     N341256                   |
|                           N341256                   |
|J DSW1                                               |
|A                                                    |
|M       12MHz                   FI-003K  N341256(x2) |
|M DSW2                N341256(x3)                    |
|A               PAL                                  |
|         40MHz  PAL                                  |
|  DSW3          PAL  N341256                         |
|         68020  PAL  N341256                         |
|        N341256      28.432MHz    M60067-0901FP      |
|  DSW4  N341256 PAL                                  |
|-----------------------------------------------------|

Notes:
      68020 clock: 20.000MHz
        Z80 clock: 6.000MHz
      YM278 clock: 33.8688MHz
            VSync: 60Hz
            Hsync: 15.81kHz


Bottom Board

FG-3J ROM-J 507KA0301P04       Rev:1.3
|--------------------------------|
|                          SROM  |
|                                |
|  SP01*      SP89         PCM   |
|                                |
|  SP23       SPAB               |
|                                |
|  SP45       SPCD         MAP   |
|                                |
|  SP67       SPEF*        PGM3  |
|                                |
|                          PGM2  |
|                                |
|  BG2123     BG1113       PGM1  |
|                                |
|  BG2022     BG1012       PGM0  |
|--------------------------------|

* = Not populated

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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "sound/262intf.h"
#include "sound/ymf278b.h"

static int fuuki32_raster_enable = 1; /* Enabled by default */
static UINT8 fuuki32_shared_ram[16];

/* Described in src/vidhrdw/fuuki32.c */
extern UINT32 *fuuki32_vram_0, *fuuki32_vram_1;
extern UINT32 *fuuki32_vram_2, *fuuki32_vram_3;
extern UINT32 *fuuki32_vregs, *fuuki32_priority, *fuuki32_tilebank;


/* Functions defined in vidhrdw: */

WRITE32_HANDLER( fuuki32_vram_0_w );
WRITE32_HANDLER( fuuki32_vram_1_w );
WRITE32_HANDLER( fuuki32_vram_2_w );
WRITE32_HANDLER( fuuki32_vram_3_w );

VIDEO_START( fuuki32 );
VIDEO_UPDATE( fuuki32 );
VIDEO_EOF( fuuki32 );

/*UINT32 *fuuki32_shared_ram; */

static WRITE32_HANDLER( paletteram32_xRRRRRGGGGGBBBBB_dword_w )
{
	if(ACCESSING_MSW32)
	{
		int r,g,b;
		COMBINE_DATA(&paletteram32[offset]);

		r = (paletteram32[offset] & 0x7c000000) >> (10+16);
		g = (paletteram32[offset] & 0x03e00000) >> (5+16);
		b = (paletteram32[offset] & 0x001f0000) >> (0+16);

		b = b << 3;
		r = r << 3;
		g = g << 3;

		palette_set_color(offset*2,r,g,b);
	}

	if(ACCESSING_LSW32)
	{
		int r,g,b;
		COMBINE_DATA(&paletteram32[offset]);

		r = (paletteram32[offset] & 0x00007c00) >> (10);
		g = (paletteram32[offset] & 0x000003e0) >> (5);
		b = (paletteram32[offset] & 0x0000001f) >> (0);

		b = b << 3;
		r = r << 3;
		g = g << 3;

		palette_set_color(offset*2+1,r,g,b);
	}
}

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


                            Memory Maps - Main CPU


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


#define FUUKI32_INPUT( _N_ ) \
\
static READ32_HANDLER( io32_##_N_##_r ) \
{ \
	return (readinputport( _N_ ) << 16) | readinputport( _N_ ); \
}

FUUKI32_INPUT( 0 ) /* $800000.l Coins Inputs */
FUUKI32_INPUT( 1 ) /* $810000.l Player Inputs */
FUUKI32_INPUT( 2 ) /* $880000.l Dipswitches + Service */
FUUKI32_INPUT( 3 ) /* $890000.l More Dipswitches */

/* Sound comms */
static READ32_HANDLER( snd_020_r )
{
	return fuuki32_shared_ram[offset*2]<<16 | fuuki32_shared_ram[(offset*2)+1];
}

static WRITE32_HANDLER( snd_020_w )
{
	if (!(mem_mask & 0x00ff0000))
	{
		fuuki32_shared_ram[offset*2] = data>>16;
	}

	if (!(mem_mask & 0x000000ff))
	{
		fuuki32_shared_ram[(offset*2)+1] = data & 0xff;
	}
}

/* Lines with empty comment are for debug only */

static ADDRESS_MAP_START( fuuki32_readmem, ADDRESS_SPACE_PROGRAM, 32 )
	AM_RANGE(0x000000, 0x1fffff) AM_READ(MRA32_ROM)
	AM_RANGE(0x400000, 0x40ffff) AM_READ(MRA32_RAM) /* Work RAM */
	AM_RANGE(0x500000, 0x501fff) AM_READ(MRA32_RAM) /* Tilemap 1 */
	AM_RANGE(0x502000, 0x503fff) AM_READ(MRA32_RAM) /* Tilemap 2 */
	AM_RANGE(0x504000, 0x505fff) AM_READ(MRA32_RAM) /* Tilemap bg */
	AM_RANGE(0x506000, 0x507fff) AM_READ(MRA32_RAM) /* Tilemap bg2 */
	AM_RANGE(0x508000, 0x517fff) AM_READ(MRA32_RAM) /* More tilemap, or linescroll? Seems to be empty all of the time */
	AM_RANGE(0x600000, 0x601fff) AM_READ(MRA32_RAM) /* Sprites */

	AM_RANGE(0x700000, 0x703fff) AM_READ(MRA32_RAM) /* Palette */

	AM_RANGE(0x800000, 0x800003) AM_READ(io32_0_r) /* Coin */
	AM_RANGE(0x810000, 0x810003) AM_READ(io32_1_r) /* Player Inputs */
	AM_RANGE(0x880000, 0x880003) AM_READ(io32_2_r) /* Service + DIPS */
	AM_RANGE(0x890000, 0x890003) AM_READ(io32_3_r) /* More DIPS */

	AM_RANGE(0x8c0000, 0x8c001f) AM_READ(MRA32_RAM)/* Video Registers */

/**/AM_RANGE(0x8d0000, 0x8d0003) AM_READ(MRA32_RAM) /* Flipscreen Related */
/**/AM_RANGE(0x8e0000, 0x8e0003) AM_READ(MRA32_RAM) /* Controls layer order */

	AM_RANGE(0x903fe0, 0x903fff) AM_READ(snd_020_r) /* Shared with Z80 */
/*  AM_RANGE(0x903fe0, 0x903fe3) AM_READ(fuuki32_sound_command_r) // Shared with Z80 */
/*  AM_RANGE(0x903fe4, 0x903fff) AM_READ(MRA32_RAM) // ?? */
ADDRESS_MAP_END

static ADDRESS_MAP_START( fuuki32_writemem, ADDRESS_SPACE_PROGRAM, 32 )
	AM_RANGE(0x000000, 0x1fffff) AM_WRITE(MWA32_ROM)
	AM_RANGE(0x400000, 0x40ffff) AM_WRITE(MWA32_RAM) /* Work RAM */
	AM_RANGE(0x500000, 0x501fff) AM_WRITE(fuuki32_vram_0_w) AM_BASE(&fuuki32_vram_0) /* Tilemap 1 */
	AM_RANGE(0x502000, 0x503fff) AM_WRITE(fuuki32_vram_1_w) AM_BASE(&fuuki32_vram_1) /* Tilemap 2 */
	AM_RANGE(0x504000, 0x505fff) AM_WRITE(fuuki32_vram_2_w) AM_BASE(&fuuki32_vram_2) /* Tilemap bg */
	AM_RANGE(0x506000, 0x507fff) AM_WRITE(fuuki32_vram_3_w) AM_BASE(&fuuki32_vram_3) /* Tilemap bg2 */
	AM_RANGE(0x508000, 0x517fff) AM_WRITE(MWA32_RAM) /* More tilemap, or linescroll? Seems to be empty all of the time */

	AM_RANGE(0x600000, 0x601fff) AM_WRITE(MWA32_RAM) AM_BASE(&spriteram32) AM_SIZE(&spriteram_size	)	/* Sprites */
	AM_RANGE(0x700000, 0x703fff) AM_WRITE(paletteram32_xRRRRRGGGGGBBBBB_dword_w) AM_BASE(&paletteram32) /* Palette */

	AM_RANGE(0x800000, 0x800003) AM_WRITE(MWA32_NOP) /* Clear buffered inputs */
	AM_RANGE(0x810000, 0x810003) AM_WRITE(MWA32_NOP) /* Clear buffered inputs */

	AM_RANGE(0x8c0000, 0x8c001f) AM_WRITE(MWA32_RAM) AM_BASE(&fuuki32_vregs)	/* Video Registers */

	AM_RANGE(0x8d0000, 0x8d0003) AM_WRITE(MWA32_RAM) /* Flipscreen Related */
	AM_RANGE(0x8e0000, 0x8e0003) AM_WRITE(MWA32_RAM) AM_BASE(&fuuki32_priority) /* Controls layer order */

	AM_RANGE(0x903fe0, 0x903fff) AM_WRITE(snd_020_w) /* z80 comms */

	AM_RANGE(0xa00000, 0xa00003) AM_WRITE(MWA32_RAM) AM_BASE(&fuuki32_tilebank)
ADDRESS_MAP_END


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

                            Memory Maps - Sound CPU

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

static WRITE8_HANDLER ( fuuki32_sound_bw_w )
{
	UINT8 *rom = memory_region(REGION_CPU2);

	memory_set_bankptr(1, rom + 0x10000 + (data * 0x8000));
}

static READ8_HANDLER( snd_z80_r )
{
	return fuuki32_shared_ram[offset];
}

static WRITE8_HANDLER( snd_z80_w )
{
	fuuki32_shared_ram[offset] = data;
}

static ADDRESS_MAP_START( fuuki32_sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x5fff) AM_READ(MRA8_ROM		)	/* ROM */
	AM_RANGE(0x6000, 0x6fff) AM_READ(MRA8_RAM		)	/* RAM */
	AM_RANGE(0x7ff0, 0x7fff) AM_READ(snd_z80_r)
	AM_RANGE(0x8000, 0xffff) AM_READ(MRA8_BANK1		)	/* ROM */
ADDRESS_MAP_END

static ADDRESS_MAP_START( fuuki32_sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x5fff) AM_WRITE(MWA8_ROM		)	/* ROM */
	AM_RANGE(0x6000, 0x6fff) AM_WRITE(MWA8_RAM		)	/* RAM */
	AM_RANGE(0x7ff0, 0x7fff) AM_WRITE(snd_z80_w)
	AM_RANGE(0x8000, 0xffff) AM_WRITE(MWA8_ROM		)	/* ROM */
ADDRESS_MAP_END

static ADDRESS_MAP_START( fuuki32_sound_readport, ADDRESS_SPACE_IO, 8 )
	ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
	AM_RANGE(0x40, 0x40) AM_READ(YMF262_status_0_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START( fuuki32_sound_writeport, ADDRESS_SPACE_IO, 8 )
	ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
	AM_RANGE(0x00, 0x00) AM_WRITE(fuuki32_sound_bw_w)
	AM_RANGE(0x30, 0x30) AM_WRITE(MWA8_NOP)
	AM_RANGE(0x40, 0x40) AM_WRITE(YMF262_register_A_0_w)
	AM_RANGE(0x41, 0x41) AM_WRITE(YMF262_data_A_0_w)
	AM_RANGE(0x42, 0x42) AM_WRITE(YMF262_register_B_0_w)
	AM_RANGE(0x43, 0x43) AM_WRITE(YMF262_data_B_0_w)
	AM_RANGE(0x44, 0x44) AM_WRITE(YMF278B_control_port_0_C_w)
	AM_RANGE(0x45, 0x45) AM_WRITE(YMF278B_data_port_0_C_w)
ADDRESS_MAP_END


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


                                Input Ports


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

INPUT_PORTS_START( asurabld )
	PORT_START	/* IN0 - $800000.w/$800002.w */
	PORT_BIT(  0x0001, IP_ACTIVE_LOW, IPT_COIN1    )
	PORT_BIT(  0x0002, IP_ACTIVE_LOW, IPT_COIN2    )
	PORT_BIT(  0x0004, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x0008, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x0010, IP_ACTIVE_LOW, IPT_START1   )
	PORT_BIT(  0x0020, IP_ACTIVE_LOW, IPT_START2   )
	PORT_BIT(  0x0040, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x0100, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT(  0xfe00, IP_ACTIVE_LOW, IPT_UNKNOWN  )

	PORT_START	/* IN1 - $810000.w/$810002.w */
	PORT_BIT(  0x0001, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)
	PORT_BIT(  0x0002, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x0004, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x0008, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x0010, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x0020, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT(  0x0040, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
	PORT_BIT(  0x0080, IP_ACTIVE_LOW, IPT_UNKNOWN                      )
	PORT_BIT(  0x0100, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)
	PORT_BIT(  0x0200, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x0400, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x0800, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x1000, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x2000, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT(  0x4000, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT(  0x8000, IP_ACTIVE_LOW, IPT_UNKNOWN                      )

	PORT_START	/* IN2 - $880000.w/$880002.w */
	PORT_SERVICE( 0x0001, 0x0001 )
	PORT_DIPNAME( 0x0002, 0x0002, "Blood Colour" ) /* Any other censorship? (Tested in 3 locations) */
	PORT_DIPSETTING(      0x0002, "Red" )
	PORT_DIPSETTING(      0x0000, "Green" )
	PORT_DIPNAME( 0x0004, 0x0004, DEF_STR( Unknown ) ) /* Tested @ 0917AC */
	PORT_DIPSETTING(      0x0004, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0008, 0x0008, DEF_STR( Unknown ) ) /* Tested @ 0917AC */
	PORT_DIPSETTING(      0x0008, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x0030, 0x0030, "Timer" )
	PORT_DIPSETTING(      0x0000, "Slow" )
	PORT_DIPSETTING(      0x0030, DEF_STR( Medium ) )
	PORT_DIPSETTING(      0x0010, "Fast" )
	PORT_DIPSETTING(      0x0020, "Very Fast" )
	PORT_DIPNAME( 0x00c0, 0x0000, "Coinage Mode" )
	PORT_DIPSETTING(      0x00c0, "Split" )
	PORT_DIPSETTING(      0x0000, "Joint" )
	PORT_BIT( 0xff00, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START	/* IN3 - $890000.w/$890002.w */
	PORT_DIPNAME( 0x0001, 0x0001, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(      0x0001, DEF_STR( Off ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( On ) )
	PORT_DIPNAME( 0x000e, 0x0000, "Computer Level" ) /* See @ 0917CC */
	PORT_DIPSETTING(      0x0000, "0" )
	PORT_DIPSETTING(      0x0008, "1" )
	PORT_DIPSETTING(      0x0004, "2" )
	PORT_DIPSETTING(      0x000c, "3" )
	PORT_DIPSETTING(      0x000e, "4" )
	PORT_DIPSETTING(      0x0002, "5" )
	PORT_DIPSETTING(      0x000a, "6" )
	PORT_DIPSETTING(      0x0006, "7" )
	PORT_DIPNAME( 0x0030, 0x0010, "Damage" )
	PORT_DIPSETTING(      0x0020, "Lowest" )
	PORT_DIPSETTING(      0x0030, DEF_STR( Low ) )
	PORT_DIPSETTING(      0x0010, DEF_STR( Medium ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( High ) )
	PORT_DIPNAME( 0x00c0, 0x0040, "Max Rounds" )
	PORT_DIPSETTING(      0x0000, "1" )
	PORT_DIPSETTING(      0x0040, "3" )
	PORT_DIPSETTING(      0x0080, "5" )
	PORT_DIPNAME( 0xf000, 0xf000, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(      0x8000, DEF_STR( 8C_1C ) )
	PORT_DIPSETTING(      0x9000, DEF_STR( 7C_1C ) )
	PORT_DIPSETTING(      0xa000, DEF_STR( 6C_1C ) )
	PORT_DIPSETTING(      0xb000, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(      0xc000, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(      0xd000, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(      0xe000, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(      0xf000, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( Free_Play ) ) /* Set both for Free Play */
	PORT_DIPNAME( 0x0f00, 0x0f00, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(      0x0800, DEF_STR( 8C_1C ) )
	PORT_DIPSETTING(      0x0900, DEF_STR( 7C_1C ) )
	PORT_DIPSETTING(      0x0a00, DEF_STR( 6C_1C ) )
	PORT_DIPSETTING(      0x0b00, DEF_STR( 5C_1C ) )
	PORT_DIPSETTING(      0x0c00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(      0x0d00, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(      0x0e00, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(      0x0f00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(      0x0000, DEF_STR( Free_Play ) ) /* Set both for Free Play */

INPUT_PORTS_END


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


                            Graphics Layouts


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

/* 8x8x4 */
static gfx_layout layout_8x8x4 =
{
	8,8,
	RGN_FRAC(1,1),
	4,
	{ STEP4(0,1) },
	{ 2*4,3*4,   0*4,1*4,   6*4,7*4, 4*4,5*4 },
	{ STEP8(0,8*4) },
	8*8*4
};

/* 16x16x4 */
static gfx_layout layout_16x16x4 =
{
	16,16,
	RGN_FRAC(1,1),
	4,
	{ STEP4(0,1) },
	{	2*4,3*4,   0*4,1*4,   6*4,7*4, 4*4,5*4,
		10*4,11*4, 8*4,9*4, 14*4,15*4, 12*4,13*4	},
	{ STEP16(0,16*4) },
	16*16*4
};

/* 16x16x8 */
static gfx_layout layout_16x16x8 =
{
	16,16,
	RGN_FRAC(1,2),
	8,
	{ STEP4(RGN_FRAC(1,2),1), STEP4(0,1) },
	{	2*4,3*4,   0*4,1*4,   6*4,7*4, 4*4,5*4,
		10*4,11*4, 8*4,9*4, 14*4,15*4, 12*4,13*4	},
	{ STEP16(0,16*4) },
	16*16*4
};

static gfx_decode fuuki32_gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &layout_16x16x4, 0x400*2, 0x40 }, /* [0] Sprites */
	{ REGION_GFX2, 0, &layout_16x16x8, 0x400*0, 0x40 }, /* [1] Layer 1 */
	{ REGION_GFX3, 0, &layout_16x16x8, 0x400*1, 0x40 }, /* [2] Layer 2 */
	{ REGION_GFX4, 0, &layout_8x8x4,   0x400*3, 0x40 }, /* [3] BG Layer */
	{ REGION_GFX4, 0, &layout_8x8x4,   0x400*3, 0x40 }, /* [4] BG Layer 2 (GFX4!) */
	{ -1 }
};


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


                                Machine Drivers


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

#define INTERRUPTS_NUM	(256-1) /* Give much better results than 256.. */
static INTERRUPT_GEN( fuuki32_interrupt )
{
	if ( cpu_getiloops() == 1 )
		cpunum_set_input_line(0, 1, PULSE_LINE);

	if ( cpu_getiloops() == 0 )
	{
		cpunum_set_input_line(0, 3, PULSE_LINE);	/* VBlank IRQ */

		if (code_pressed_memory(KEYCODE_F1))
		{
			fuuki32_raster_enable ^= 1;
			ui_popup("raster effects %sabled",fuuki32_raster_enable ? "en" : "dis");
		}
	}

	if ( ((fuuki32_vregs[0x1c/4]>>16) & 0xff) == (INTERRUPTS_NUM-1 - cpu_getiloops()) )
	{
		cpunum_set_input_line(0, 5, PULSE_LINE);	/* Raster Line IRQ */
		if(fuuki32_raster_enable) force_partial_update(cpu_getscanline());
	}
}

static void irqhandler(int irq)
{
	cpunum_set_input_line(1, 0, irq ? ASSERT_LINE : CLEAR_LINE);
}

static struct YMF278B_interface ymf278b_interface =
{
	REGION_SOUND1
};

static struct YMF262interface ymf262_interface =
{
	irqhandler		/* irq */
};

static MACHINE_DRIVER_START( fuuki32 )

	/* basic machine hardware */
	MDRV_CPU_ADD(M68EC020, 20000000) /* verified */
	MDRV_CPU_PROGRAM_MAP(fuuki32_readmem,fuuki32_writemem)
	MDRV_CPU_VBLANK_INT(fuuki32_interrupt,INTERRUPTS_NUM)

	MDRV_CPU_ADD_TAG("sound", Z80, 6000000) /* verified */
	MDRV_CPU_PROGRAM_MAP(fuuki32_sound_readmem,fuuki32_sound_writemem)
	MDRV_CPU_IO_MAP(fuuki32_sound_readport,fuuki32_sound_writeport)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(DEFAULT_60HZ_VBLANK_DURATION)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER) /* | VIDEO_BUFFERS_SPRITERAM ) // Buffered by 2 frames */
	MDRV_SCREEN_SIZE(64*8, 32*8)
	MDRV_VISIBLE_AREA(0, 40*8-1, 0, 30*8-1)
	MDRV_GFXDECODE(fuuki32_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(0x4000/2)

	MDRV_VIDEO_START(fuuki32)
	MDRV_VIDEO_UPDATE(fuuki32)
	MDRV_VIDEO_EOF(fuuki32)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_STEREO("left", "right")

	MDRV_SOUND_ADD(YMF262, 14318180)
	MDRV_SOUND_CONFIG(ymf262_interface)
	MDRV_SOUND_ROUTE(0, "left", 0.50)
	MDRV_SOUND_ROUTE(1, "right", 0.50)
	MDRV_SOUND_ROUTE(2, "left", 0.50)
	MDRV_SOUND_ROUTE(3, "right", 0.50)

	MDRV_SOUND_ADD(YMF278B, YMF278B_STD_CLOCK)
	MDRV_SOUND_CONFIG(ymf278b_interface)
	MDRV_SOUND_ROUTE(0, "left", 0.50)
	MDRV_SOUND_ROUTE(1, "right", 0.50)
MACHINE_DRIVER_END

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


                                ROMs Loading


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

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

                                Asura Blade
Fuuki, 1999

This dump is taken from a ROM board with number FG-3J ROM-J
There's nothing on the board except some 4M EPROMs and several
surface mounted MASK ROMs.

The connectors on the board and the size of the board is similar
to Jaleco Megasys32, however it's not compatible with it due to the
connector spacing being different. The physical size of the board
is too large to fit an SSV board.
So, I have no idea what the main hardware is, the game probably
runs on a custom Fuuki system board named 'FG-3'?

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

ROM_START( asurabld )
	ROM_REGION( 0x200000, REGION_CPU1, 0 ) /* M68020 */
	ROM_LOAD32_BYTE( "pgm3.u1", 0x000000, 0x80000, CRC(053e9758) SHA1(c2754d3f0c607c81c8fa33b667b576eb0474fd0b) )
	ROM_LOAD32_BYTE( "pgm2.u2", 0x000001, 0x80000, CRC(16b656ca) SHA1(5ffb551ce7dec462d3896f0fed693454496894bc) )
	ROM_LOAD32_BYTE( "pgm1.u3", 0x000002, 0x80000, CRC(35104452) SHA1(03cfd81429f8a945d5419c9750925bfa997d0607) )
	ROM_LOAD32_BYTE( "pgm0.u4", 0x000003, 0x80000, CRC(68615497) SHA1(de93751f151f195a863dc6fe83b6e7ed8f99430a) )

	ROM_REGION( 0x090000, REGION_CPU2, 0 ) /* Z80 */
	ROM_LOAD( "srom.u7", 0x00000, 0x80000, CRC(bb1deb89) SHA1(b1c70abddc0b9a88beb69a592376ff69a7e091eb) )
	ROM_RELOAD(          0x10000, 0x80000) /* for banks */

	ROM_REGION( 0x2000000, REGION_GFX1, ROMREGION_DISPOSE )
	/* 0x0000000 - 0x03fffff empty */ /* spXX.uYY - XX is the bank number! */
	ROM_LOAD( "sp23.u14", 0x0400000, 0x400000, CRC(7df492eb) SHA1(30b88a3cd025ffc8c28fef06e0784755be37ef8e) )
	ROM_LOAD( "sp45.u15", 0x0800000, 0x400000, CRC(1890f42a) SHA1(22254fe38fd83f4602a25e1ccba32df16edaf3f9) )
	ROM_LOAD( "sp67.u16", 0x0c00000, 0x400000, CRC(a48f1ef0) SHA1(bf8787f293793291a503af662d3738c007654726) )
	ROM_LOAD( "sp89.u17", 0x1000000, 0x400000, CRC(6b024362) SHA1(8be5cc3c7306d28b75acd970bb3be6d3c9825367) )
	ROM_LOAD( "spab.u18", 0x1400000, 0x400000, CRC(803d2d8c) SHA1(25df30689e576a0620656c721d92bcc3fbd84844) )
	ROM_LOAD( "spcd.u19", 0x1800000, 0x400000, CRC(42e5c26e) SHA1(b68875d353bdc5d49113bbac02fd83508bce66a5) )

	ROM_REGION( 0x0800000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "bg1012.u22", 0x0000000, 0x400000, CRC(d717a0a1) SHA1(007df309dc0650ca07e077b983a2b05730349d0b) )
	ROM_LOAD( "bg1113.u23", 0x0400000, 0x400000, CRC(94338267) SHA1(7848bc57cb0eac216100a508763451eb57a0a082) )

	ROM_REGION( 0x0800000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "bg2022.u25", 0x0000000, 0x400000, CRC(ee312cd3) SHA1(2ef9d51928d80375daf8e6b204bb66a8b9cbaee7) )
	ROM_LOAD( "bg2123.u24", 0x0400000, 0x400000, CRC(4acfc469) SHA1(a98d06b967ebb3fa3b4c8aa3d7a05063ec981fb2) )

	ROM_REGION( 0x200000, REGION_GFX4, ROMREGION_DISPOSE ) /* background tiles */
	ROM_LOAD( "map.u5", 0x00000, 0x200000, CRC(e681155e) SHA1(458845b9c86df72685d92d0d4052aacc2fa7d1bd) )

	ROM_REGION( 0x400000, REGION_SOUND1, 0 ) /* OPL4 samples */
	ROM_LOAD( "pcm.u6", 0x00000, 0x400000, CRC(ac72225a) SHA1(8d16399ed34ac5bd69dbf43b2de2b0db9ac1c610) )
ROM_END


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


                                Game Drivers


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

GAME( 1998, asurabld,	0, fuuki32, asurabld, 0, ROT0, "Fuuki", "Asura Blade - Sword of Dynasty (Japan)", GAME_IMPERFECT_GRAPHICS )
