/*  Konami NWK-TR System

    Driver by Ville Linde
*/

#include "driver.h"
#include "cpu/powerpc/ppc.h"
#include "cpu/sharc/sharc.h"
#include "machine/konppc.h"
#include "vidhrdw/voodoo.h"
#include "machine/timekpr.h"

static UINT8 led_reg0 = 0x7f, led_reg1 = 0x7f;

/* defined in hornet.c */
READ32_HANDLER(pci_3dfx_r);
WRITE32_HANDLER(pci_3dfx_w);

static WRITE32_HANDLER( paletteram32_w )
{
	int r,g,b;

	COMBINE_DATA(&paletteram32[offset]);
	data = paletteram32[offset];

	b = ((data >> 0) & 0x1f);
	g = ((data >> 5) & 0x1f);
	r = ((data >> 10) & 0x1f);

	b = (b << 3) | (b >> 2);
	g = (g << 3) | (g >> 2);
	r = (r << 3) | (r >> 2);

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



/* K001604 Tilemap chip (move to konamiic.c ?) */

static UINT32 *K001604_tile_ram;
static UINT32 *K001604_char_ram;
static UINT8 *K001604_dirty_map;
static int K001604_gfx_index, K001604_char_dirty;
static tilemap *K001604_layer[1];

#define K001604_NUM_TILES		16384

static gfx_layout K001604_char_layout =
{
	8, 8,
	K001604_NUM_TILES,
	8,
	{ 8,9,10,11,12,13,14,15 },
	{ 1*16, 0*16, 3*16, 2*16, 5*16, 4*16, 7*16, 6*16 },
	{ 0*128, 1*128, 2*128, 3*128, 4*128, 5*128, 6*128, 7*128 },
	8*128
};

static void K001604_tile_info(int tile_index)
{
	UINT32 val = K001604_tile_ram[tile_index];
	int color = val >> 16;
	int tile = val & 0xffff;
	SET_TILE_INFO(K001604_gfx_index, tile, color/2, 0);
}

int K001604_vh_start(void)
{
	int width;
	const char *gamename = Machine->gamedrv->name;

	/* HACK !!! To be removed */
	if( stricmp(gamename, "thrilld") == 0 || stricmp(gamename, "gticlub") == 0
		|| stricmp(gamename, "gticlubj") == 0 )
		width = 256;
	else
		width = 128;

	for(K001604_gfx_index = 0; K001604_gfx_index < MAX_GFX_ELEMENTS; K001604_gfx_index++)
		if (Machine->gfx[K001604_gfx_index] == 0)
			break;
	if(K001604_gfx_index == MAX_GFX_ELEMENTS)
		return 1;

	K001604_char_ram = auto_malloc(0x400000);
	if( !K001604_char_ram )
		return 1;

	K001604_tile_ram = auto_malloc(0x20000);
	if( !K001604_tile_ram )
		return 1;

	K001604_dirty_map = auto_malloc(K001604_NUM_TILES);
	if( !K001604_dirty_map ) {
		free(K001604_char_ram);
		free(K001604_tile_ram);
		return 1;
	}

	K001604_layer[0] = tilemap_create(K001604_tile_info, tilemap_scan_rows, TILEMAP_TRANSPARENT, 8, 8, width, 64);

	if( !K001604_layer[0] ) {
		free(K001604_dirty_map);
		free(K001604_tile_ram);
		free(K001604_char_ram);
	}

	tilemap_set_transparent_pen(K001604_layer[0], 0);

	memset(K001604_char_ram, 0, 0x400000);
	memset(K001604_tile_ram, 0, 0x10000);
	memset(K001604_dirty_map, 0, K001604_NUM_TILES);

	Machine->gfx[K001604_gfx_index] = decodegfx((UINT8*)K001604_char_ram, &K001604_char_layout);
	if( !Machine->gfx[K001604_gfx_index] ) {
		free(K001604_dirty_map);
		free(K001604_tile_ram);
		free(K001604_char_ram);
	}

	if (Machine->drv->color_table_len)
	{
		Machine->gfx[K001604_gfx_index]->colortable = Machine->remapped_colortable;
		Machine->gfx[K001604_gfx_index]->total_colors = Machine->drv->color_table_len / 16;
	}
	else
	{
		Machine->gfx[K001604_gfx_index]->colortable = Machine->pens;
		Machine->gfx[K001604_gfx_index]->total_colors = Machine->drv->total_colors / 16;
	}

	return 0;
}

void K001604_tile_update(void)
{
	if(K001604_char_dirty) {
		int i;
		for(i=0; i<K001604_NUM_TILES; i++) {
			if(K001604_dirty_map[i]) {
				K001604_dirty_map[i] = 0;
				decodechar(Machine->gfx[K001604_gfx_index], i, (UINT8 *)K001604_char_ram, &K001604_char_layout);
			}
		}
		tilemap_mark_all_tiles_dirty(K001604_layer[0]);
		K001604_char_dirty = 0;
	}
}

void K001604_tile_draw(mame_bitmap *bitmap, const rectangle *cliprect)
{
	tilemap_draw(bitmap, cliprect, K001604_layer[0], 0,0);
}

static UINT32 K001604_reg[256];

READ32_HANDLER(K001604_tile_r)
{
	return K001604_tile_ram[offset];
}

READ32_HANDLER(K001604_char_r)
{
	int set, bank;
	UINT32 addr;

	set = (K001604_reg[0x60/4] & 0x1000000) ? 0x100000 : 0;

	if( set ) {
		bank = (K001604_reg[0x60/4] >> 8) & 0x3;
	} else {
		bank = (K001604_reg[0x60/4] & 0x3);
	}

	addr = offset + ((set + (bank * 0x40000)) / 4);

	return K001604_char_ram[addr];
}

WRITE32_HANDLER(K001604_tile_w)
{
	COMBINE_DATA(K001604_tile_ram + offset);
	tilemap_mark_tile_dirty(K001604_layer[0], offset);
}

WRITE32_HANDLER(K001604_char_w)
{
	int set, bank;
	UINT32 addr;

	set = (K001604_reg[0x60/4] & 0x1000000) ? 0x100000 : 0;

	if( set ) {
		bank = (K001604_reg[0x60/4] >> 8) & 0x3;
	} else {
		bank = (K001604_reg[0x60/4] & 0x3);
	}

	addr = offset + ((set + (bank * 0x40000)) / 4);

	COMBINE_DATA(K001604_char_ram + addr);
	K001604_dirty_map[addr / 32] = 1;
	K001604_char_dirty = 1;
}



WRITE32_HANDLER(K001604_reg_w)
{
	COMBINE_DATA(K001604_reg + offset);
}

READ32_HANDLER(K001604_reg_r)
{
	return K001604_reg[offset];
}






VIDEO_START( nwktr )
{
	video_start_voodoo_2x4mb();
	voodoo_reset();

	return K001604_vh_start();
}


VIDEO_UPDATE( nwktr )
{
	fillbitmap(bitmap, Machine->remapped_colortable[0], cliprect);

	video_update_voodoo(screen, bitmap, cliprect);

	K001604_tile_update();
	K001604_tile_draw(bitmap, cliprect);

	draw_7segment_led(bitmap, 3, 3, led_reg0);
	draw_7segment_led(bitmap, 9, 3, led_reg1);
}

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

static READ32_HANDLER( sysreg_r )
{
	UINT32 r = 0;
	if (offset == 0)
	{
		if (!(mem_mask & 0xff000000))
		{
			r |= readinputport(0) << 24;
	}
		if (!(mem_mask & 0x00ff0000))
		{
			r |= readinputport(1) << 16;
	}
		if (!(mem_mask & 0x0000ff00))
		{
			r |= readinputport(2) << 8;
		}
		if (!(mem_mask & 0x000000ff))
		{
			r |= 0xff;
		}
	}
	else if (offset == 1)
	{
		if (!(mem_mask & 0xff000000))
		{
			r |= readinputport(3) << 24;
		}
	}
	return r;
}

static WRITE32_HANDLER( sysreg_w )
{
	if( offset == 0 ) {
		if( mem_mask == 0x00ffffff )
			led_reg0 = (data >> 24) & 0xff;
		if( mem_mask == 0xff00ffff )
			led_reg1 = (data >> 16) & 0xff;
		return;
	}
	if( offset == 1 )
{
		if (!(mem_mask & 0x000000ff))
{
			if (data & 0x80)	/* CG Board 1 IRQ Ack */
			{
				cpunum_set_input_line(0, INPUT_LINE_IRQ1, CLEAR_LINE);
}
			if (data & 0x40)	/* CG Board 0 IRQ Ack */
{
				cpunum_set_input_line(0, INPUT_LINE_IRQ0, CLEAR_LINE);
			}
		}
		return;
	}
}

static UINT8 sndto68k[16], sndtoppc[16];	/* read/write split mapping */

static READ32_HANDLER( sound_r )
{
	return 0x005f0000;
}

static READ32_HANDLER( lanc1_r )
{
	return 0xffffffff;
}

static WRITE32_HANDLER( lanc1_w )
{

}

static READ32_HANDLER( lanc2_r )
{
	return 0xffffffff;
}

static WRITE32_HANDLER( lanc2_w )
{

}

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

static ADDRESS_MAP_START( nwktr_map, ADDRESS_SPACE_PROGRAM, 32 )
	AM_RANGE(0x00000000, 0x003fffff) AM_RAM AM_SHARE(3)
	AM_RANGE(0x74000000, 0x740000ff) AM_READWRITE(K001604_reg_r, K001604_reg_w)
	AM_RANGE(0x74010000, 0x74017fff) AM_READWRITE(paletteram32_r, paletteram32_w) AM_BASE(&paletteram32)
	AM_RANGE(0x74020000, 0x7403ffff) AM_READWRITE(K001604_tile_r, K001604_tile_w)
	AM_RANGE(0x74040000, 0x7407ffff) AM_READWRITE(K001604_char_r, K001604_char_w)
	AM_RANGE(0x78000000, 0x7800ffff) AM_READWRITE(cgboard_dsp_shared_r_ppc, cgboard_dsp_shared_w_ppc)
	AM_RANGE(0x780c0000, 0x780c0003) AM_READWRITE(cgboard_dsp_comm_r_ppc, cgboard_dsp_comm_w_ppc)
	AM_RANGE(0x7d000000, 0x7d00ffff) AM_READ(sysreg_r)
	AM_RANGE(0x7d010000, 0x7d01ffff) AM_WRITE(sysreg_w)
	AM_RANGE(0x7d020000, 0x7d021fff) AM_READWRITE(timekeeper_0_32be_r, timekeeper_0_32be_w)	/* M48T58Y RTC/NVRAM */
	AM_RANGE(0x7d030000, 0x7d030003) AM_READ(sound_r)
	AM_RANGE(0x7d040000, 0x7d04ffff) AM_READWRITE(lanc1_r, lanc1_w)
	AM_RANGE(0x7d050000, 0x7d05ffff) AM_READWRITE(lanc2_r, lanc2_w)
	AM_RANGE(0x7e000000, 0x7e7fffff) AM_ROM AM_REGION(REGION_USER2, 0) AM_SHARE(4)
	AM_RANGE(0x7f000000, 0x7f1fffff) AM_ROM AM_SHARE(2)
	AM_RANGE(0x80000000, 0x803fffff) AM_RAM	AM_SHARE(3)	/* Work RAM */
	AM_RANGE(0xfe000000, 0xfe7fffff) AM_ROM AM_SHARE(4)
	AM_RANGE(0xff000000, 0xff1fffff) AM_ROM AM_SHARE(2)
	AM_RANGE(0xffe00000, 0xffffffff) AM_ROM AM_REGION(REGION_USER1, 0) AM_SHARE(2)
ADDRESS_MAP_END

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

static READ16_HANDLER( sndcomm68k_r )
{
	return sndto68k[offset];
}

static WRITE16_HANDLER( sndcomm68k_w )
{
/*  logerror("68K: write %x to %x\n", data, offset); */
	sndtoppc[offset] = data;
}

static ADDRESS_MAP_START( sound_memmap, ADDRESS_SPACE_PROGRAM, 16 )
	AM_RANGE(0x000000, 0x07ffff) AM_ROM
	AM_RANGE(0x100000, 0x10ffff) AM_RAM		/* Work RAM */
	AM_RANGE(0x200000, 0x20ffff) AM_RAM
	AM_RANGE(0x400000, 0x40000f) AM_WRITE(sndcomm68k_w)
	AM_RANGE(0x400010, 0x40001f) AM_READ(sndcomm68k_r)
	AM_RANGE(0x400020, 0x4fffff) AM_RAM
	AM_RANGE(0x580000, 0x580001) AM_WRITENOP
ADDRESS_MAP_END

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

static UINT32 *sharc_dataram;

static READ32_HANDLER( dsp_dataram_r )
{
	return sharc_dataram[offset] & 0xffff;
}

static WRITE32_HANDLER( dsp_dataram_w )
{
	sharc_dataram[offset] = data;
}

static ADDRESS_MAP_START( sharc_map, ADDRESS_SPACE_DATA, 32 )
	AM_RANGE(0x0400000, 0x041ffff) AM_READWRITE(cgboard_dsp_shared_r_sharc, cgboard_dsp_shared_w_sharc)
	AM_RANGE(0x0500000, 0x05fffff) AM_READWRITE(dsp_dataram_r, dsp_dataram_w)
	AM_RANGE(0x1400000, 0x14fffff) AM_RAM
	AM_RANGE(0x2400000, 0x24fffff) AM_READWRITE(voodoo_regs_r, voodoo_regs_w)
	AM_RANGE(0x2500000, 0x25fffff) AM_READWRITE(voodoo_framebuf_r, voodoo_framebuf_w)
	AM_RANGE(0x2600000, 0x27fffff) AM_WRITE(voodoo_textureram_w)
	AM_RANGE(0x3400000, 0x34000ff) AM_READWRITE(cgboard_dsp_comm_r_sharc, cgboard_dsp_comm_w_sharc)
	AM_RANGE(0x3500000, 0x35000ff) AM_READWRITE(pci_3dfx_r, pci_3dfx_w)
ADDRESS_MAP_END

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

INPUT_PORTS_START( nwktr )
	PORT_START
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_PLAYER(1)

	PORT_START
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_PLAYER(2)

	PORT_START
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_SERVICE ) PORT_NAME("Service Button") PORT_CODE(KEYCODE_7)
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_SERVICE ) PORT_NAME( DEF_STR( Service_Mode )) PORT_CODE(KEYCODE_F2)
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START
	PORT_DIPNAME( 0x80, 0x00, "Test Mode" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x80, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x00, "DIP2" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x40, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x00, "DIP3" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x20, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, "DIP4" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x10, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, "DIP5" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x08, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, "DIP6" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x00, "DIP7" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x02, DEF_STR( On ) )
	PORT_DIPNAME( 0x01, 0x00, "DIP8" )
	PORT_DIPSETTING( 0x00, DEF_STR( Off ) )
	PORT_DIPSETTING( 0x01, DEF_STR( On ) )

INPUT_PORTS_END

static ppc_config nwktr_ppc_cfg =
{
	PPC_MODEL_403GA
};

static sharc_config sharc_cfg =
{
	BOOT_MODE_EPROM
};

static int vblank = 0;
static INTERRUPT_GEN( nwktr_vblank )
{
	if (vblank == 0)
	{
		cpunum_set_input_line(0, INPUT_LINE_IRQ0, ASSERT_LINE);
	}
	else
	{
		cpunum_set_input_line(0, INPUT_LINE_IRQ1, ASSERT_LINE);
	}
	vblank++;
	vblank &= 1;
}

static MACHINE_INIT( nwktr )
{
	cpunum_set_input_line(2, INPUT_LINE_RESET, ASSERT_LINE);
}

static MACHINE_DRIVER_START( nwktr )

	/* basic machine hardware */
	MDRV_CPU_ADD(PPC403, 64000000/2)	/* PowerPC 403GA 32MHz */
	MDRV_CPU_CONFIG(nwktr_ppc_cfg)
	MDRV_CPU_PROGRAM_MAP(nwktr_map, 0)
	MDRV_CPU_VBLANK_INT(nwktr_vblank, 2)

	MDRV_CPU_ADD(M68000, 64000000/4)	/* 16MHz */
	MDRV_CPU_PROGRAM_MAP(sound_memmap, 0)

	MDRV_CPU_ADD(ADSP21062, 36000000)
	MDRV_CPU_CONFIG(sharc_cfg)
	MDRV_CPU_DATA_MAP(sharc_map, 0)

	MDRV_FRAMES_PER_SECOND(60)
	MDRV_VBLANK_DURATION(0)

	MDRV_MACHINE_INIT(nwktr)
	MDRV_NVRAM_HANDLER( timekeeper_0 )

 	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER | VIDEO_NEEDS_6BITS_PER_GUN | VIDEO_RGB_DIRECT)
	MDRV_SCREEN_SIZE(64*8, 48*8)
	MDRV_VISIBLE_AREA(0*8, 64*8-1, 0*8, 48*8-1)
	MDRV_PALETTE_LENGTH(65536)

	MDRV_VIDEO_START(nwktr)
	MDRV_VIDEO_UPDATE(nwktr)

MACHINE_DRIVER_END

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

static UINT8 jamma_rdata[1024];
static void jamma_r(int length)
{
	int i;
	for (i=0; i < length; i++)
	{
		jamma_rdata[i] = rand();
	}
}

static UINT8 jamma_wdata[1024];
static void jamma_w(int length)
{

}

static UINT8 backup_ram[0x2000];
static DRIVER_INIT( nwktr )
{
	init_konami_cgboard(0);
	sharc_dataram = auto_malloc(0x100000);
	timekeeper_init(0, TIMEKEEPER_M48T58, backup_ram);

	ppc403_install_spu_tx_dma_handler(jamma_w, jamma_wdata);
	ppc403_install_spu_rx_dma_handler(jamma_r, jamma_rdata);
}

static DRIVER_INIT(thrilld)
{
	int i;
	UINT16 checksum;

	/* RTC data */
	backup_ram[0x00] = 0x47;	/* 'G' */
	backup_ram[0x01] = 0x43;	/* 'C' */
	backup_ram[0x02] = 0x37;	/* '7' */
	backup_ram[0x03] = 0x31;	/* '1' */
	backup_ram[0x04] = 0x33;	/* '3' */
	backup_ram[0x05] = 0x00;	/* */
	backup_ram[0x06] = 0x00;	/* ? */
	backup_ram[0x07] = 0x00;	/* ? */
	backup_ram[0x08] = 0x19;	/* */
	backup_ram[0x09] = 0x99;	/* 1999 */
	backup_ram[0x0a] = 0x4a;	/* 'J' */
	backup_ram[0x0b] = 0x41;	/* 'A' */
	backup_ram[0x0c] = 0x41;	/* */
	backup_ram[0x0d] = 0x00;	/* */

	checksum = 0;
	for (i=0; i < 14; i+=2)
	{
		checksum += (backup_ram[i] << 8) | (backup_ram[i+1]);
		checksum &= 0xffff;
	}
	checksum = -1 - checksum;
	backup_ram[0x0e] = (checksum >> 8) & 0xff;	/* checksum */
	backup_ram[0x0f] = (checksum >> 0) & 0xff;	/* checksum */

	init_nwktr();
}

static DRIVER_INIT(racingj)
{
	int i;
	UINT32 checksum;

	/* RTC data */
	backup_ram[0x00] = 0x47;	/* 'G' */
	backup_ram[0x01] = 0x6e;	/* 'n' */
	backup_ram[0x02] = 0x36;	/* '6' */
	backup_ram[0x03] = 0x37;	/* '7' */
	backup_ram[0x04] = 0x36;	/* '6' */
	backup_ram[0x05] = 0x00;	/* */
	backup_ram[0x06] = 0x00;	/* */
	backup_ram[0x07] = 0x00;	/* */
	backup_ram[0x08] = 0x00;	/* */
	backup_ram[0x09] = 0x00;	/* */
	backup_ram[0x0a] = 0x4a;	/* 'J' */
	backup_ram[0x0b] = 0x41;	/* 'A' */
	backup_ram[0x0c] = 0x45;	/* 'E' */
	backup_ram[0x0d] = 0x00;	/* */

	checksum = 0;
    for (i=0; i < 14; i+=2)
    {
		checksum += (backup_ram[i] << 8) | (backup_ram[i+1]);
        checksum &= 0xffff;
    }
	checksum = -1 - checksum;
	backup_ram[0x0e] = (checksum >> 8) & 0xff;	/* checksum */
	backup_ram[0x0f] = (checksum >> 0) & 0xff;	/* checksum */

	init_nwktr();
}

static DRIVER_INIT(racingj2)
{
	int i;
	UINT32 checksum;

	/* RTC data */
	backup_ram[0x00] = 0x47;	/* 'G' */
	backup_ram[0x01] = 0x6e;	/* 'n' */
	backup_ram[0x02] = 0x38;	/* '8' */
	backup_ram[0x03] = 0x38;	/* '8' */
	backup_ram[0x04] = 0x38;	/* '8' */
	backup_ram[0x05] = 0x00;	/* */
	backup_ram[0x06] = 0x00;	/* */
	backup_ram[0x07] = 0x00;	/* */
	backup_ram[0x08] = 0x00;	/* */
	backup_ram[0x09] = 0x00;	/* */
	backup_ram[0x0a] = 0x4a;	/* 'J' */
	backup_ram[0x0b] = 0x41;	/* 'A' */
	backup_ram[0x0c] = 0x45;	/* 'E' */
	backup_ram[0x0d] = 0x00;	/* */

	checksum = 0;
	for (i=0; i < 14; i+=2)
	{
		checksum += (backup_ram[i] << 8) | (backup_ram[i+1]);
		checksum &= 0xffff;
	}
	checksum = -1 - checksum;
	backup_ram[0x0e] = (checksum >> 8) & 0xff;	/* checksum */
	backup_ram[0x0f] = (checksum >> 0) & 0xff;	/* checksum */

	init_nwktr();
}


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

ROM_START(racingj)
	ROM_REGION32_BE(0x200000, REGION_USER1, 0)	/* PowerPC program roms */
	ROM_LOAD16_WORD_SWAP("676nc01.bin", 0x000000, 0x200000, CRC(690346b5) SHA1(157ab6788382ef4f5a8772f08819f54d0856fcc8))

	ROM_REGION32_BE(0x400000, REGION_USER2, 0)		/* Data roms */
		ROM_LOAD32_WORD_SWAP("676a04.bin", 0x000000, 0x200000, CRC(d7808cb6) SHA1(0668fae5bb94cc120fe196d4b18200f7b512317f))
		ROM_LOAD32_WORD_SWAP("676a05.bin", 0x000002, 0x200000, CRC(fb4de1ad) SHA1(f6aa4eb1b5d22901a2aaf899ed3237a9dfdc55b5))

	ROM_REGION32_BE(0x800000, REGION_USER5, 0)	/* CG Board texture roms */
	    ROM_LOAD32_WORD_SWAP( "676a13.8x",    0x000000, 0x400000, CRC(29077763) SHA1(ee087ca0d41966ca0fd10727055bb1dcd05a0873) )
        ROM_LOAD32_WORD_SWAP( "676a14.16x",   0x000002, 0x400000, CRC(50a7e3c0) SHA1(7468a66111a3ddf7c043cd400fa175cae5f65632) )

	ROM_REGION(0x80000, REGION_CPU2, 0)		/* 68k program roms */
        ROM_LOAD16_WORD_SWAP( "676gna08.7s", 0x000000, 0x080000, CRC(8973f6f2) SHA1(f5648a7e0205f7e979ccacbb52936809ce14a184) )

	ROM_REGION(0x1000000, REGION_USER3, 0) 		/* other roms (textures?) */
        ROM_LOAD( "676a09.16p",   0x000000, 0x400000, CRC(f85c8dc6) SHA1(8b302c80be309b5cc68b75945fcd7b87a56a4c9b) )
        ROM_LOAD( "676a10.14p",   0x400000, 0x400000, CRC(7b5b7828) SHA1(aec224d62e4b1e8fdb929d7947ce70d84ba676cf) )
ROM_END

ROM_START(racingj2)
	ROM_REGION32_BE(0x200000, REGION_USER1, 0)	/* PowerPC program roms */
	ROM_LOAD16_WORD_SWAP("888a01.27p", 0x000000, 0x200000, CRC(d077890a) SHA1(08b252324cf46fbcdb95e8f9312287920cd87c5d))

	ROM_REGION32_BE(0x800000, REGION_USER2, 0)		/* Data roms */
		ROM_LOAD32_WORD_SWAP( "676a04.bin",	0x000000, 0x200000, CRC(d7808cb6) SHA1(0668fae5bb94cc120fe196d4b18200f7b512317f))
		ROM_LOAD32_WORD_SWAP( "676a05.bin",	0x000002, 0x200000, CRC(fb4de1ad) SHA1(f6aa4eb1b5d22901a2aaf899ed3237a9dfdc55b5))
	ROM_LOAD32_WORD_SWAP( "888a06.12t",	0x400000, 0x200000, CRC(00cbec4d) SHA1(1ce7807d86e90edbf4eecba462a27c725f5ad862))

	ROM_REGION32_BE(0x800000, REGION_USER5, 0)	/* CG Board Texture roms */
	    ROM_LOAD32_WORD_SWAP( "888a13.8x",    0x000000, 0x400000, CRC(2292f530) SHA1(0f4d1332708fd5366a065e0a928cc9610558b42d) )
        ROM_LOAD32_WORD_SWAP( "888a14.16x",   0x000002, 0x400000, CRC(6a834a26) SHA1(d1fbd7ae6afd05f0edac4efde12a5a45aa2bc7df) )

	ROM_REGION(0x80000, REGION_CPU2, 0)		/* 68k program roms */
        ROM_LOAD16_WORD_SWAP( "888a08.7s",    0x000000, 0x080000, CRC(55fbea65) SHA1(ad953f758181731efccadcabc4326e6634c359e8) )

	ROM_REGION(0x800000, REGION_USER3, 0) 		/* PCM sample roms */
        ROM_LOAD( "888a09.16p",   0x000000, 0x400000, CRC(11e2fed2) SHA1(24b8a367b59fedb62c56f066342f2fa87b135fc5) )
        ROM_LOAD( "888a10.14p",   0x400000, 0x400000, CRC(328ce610) SHA1(dbbc779a1890c53298c0db129d496df048929496) )
ROM_END

ROM_START(thrilld)
	ROM_REGION32_BE(0x200000, REGION_USER1, 0)	/* PowerPC program roms */
	ROM_LOAD16_WORD_SWAP("713be01.27p", 0x000000, 0x200000, CRC(d84a7723) SHA1(f4e9e08591b7e5e8419266dbe744d56a185384ed))

	ROM_REGION32_BE(0x400000, REGION_USER2, 0)		/* Data roms */
		ROM_LOAD32_WORD_SWAP("713a04.16t", 0x000000, 0x200000, CRC(c994aaa8) SHA1(d82b9930a11e5384ad583684a27c95beec03cd5a))
		ROM_LOAD32_WORD_SWAP("713a05.14t", 0x000002, 0x200000, CRC(6f1e6802) SHA1(91f8a170327e9b4ee6a64aee0c106b981a317e69))

	ROM_REGION32_BE(0x800000, REGION_USER5, 0)	/* CG Board Texture roms */
        ROM_LOAD32_WORD_SWAP( "713a13.8x",    0x000000, 0x400000, CRC(b795c66b) SHA1(6e50de0d5cc444ffaa0fec7ada8c07f643374bb2) )
        ROM_LOAD32_WORD_SWAP( "713a14.16x",   0x000002, 0x400000, CRC(5275a629) SHA1(16fadef06975f0f3625cac8f84e2e77ed7d75e15) )

	ROM_REGION(0x80000, REGION_CPU2, 0)		/* 68k program roms */
        ROM_LOAD16_WORD_SWAP( "713a08.7s",    0x000000, 0x080000, CRC(6a72a825) SHA1(abeac99c5343efacabcb0cdff6d34f9f967024db) )

	ROM_REGION(0x800000, REGION_USER3, 0) 		/* PCM sample roms */
        ROM_LOAD( "713a09.16p",   0x000000, 0x400000, CRC(058f250a) SHA1(63b8e60004ec49009633e86b4992c00083def9a8) )
        ROM_LOAD( "713a10.14p",   0x400000, 0x400000, CRC(27f9833e) SHA1(1540f00d2571ecb81b914c553682b67fca94bbbd) )
ROM_END

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

GAME( 1998, racingj,	0,		nwktr,	nwktr,	racingj,	ROT0,	"Konami",	"Racing Jam", GAME_NOT_WORKING|GAME_NO_SOUND )
GAME( 1999, racingj2,	racingj,nwktr,	nwktr,	racingj2,	ROT0,	"Konami",	"Racing Jam: Chapter 2", GAME_NOT_WORKING|GAME_NO_SOUND )
GAME( 1998, thrilld,	0,		nwktr,	nwktr,	thrilld,	ROT0,	"Konami",	"Thrill Drive", GAME_NOT_WORKING|GAME_NO_SOUND )
