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

                      -= IGS009 Based Games =-

                        driver by Luca Elia

CPU     :   Z180
Sound   :   M6295 + YM2413
Video   :   IGS009
NVRAM   :   Battery for main RAM

- The hardware is similar to other IGS002 + IGS003 based boards.
  The interesting part is the background tilemap, that is designed specifically
  for simulating the nine reels of a slot machine.

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

#include "emu.h"
#include "cpu/z180/z180.h"
#include "machine/8255ppi.h"
#include "sound/2413intf.h"
#include "sound/okim6295.h"

/***************************************************************************
                                Video Hardware
***************************************************************************/


static tilemap_t *gp98_reel1_tilemap;
static UINT8 *gp98_reel1_ram;

static WRITE8_HANDLER( gp98_reel1_ram_w )
{
	gp98_reel1_ram[offset] = data;
	tilemap_mark_tile_dirty(gp98_reel1_tilemap,offset);
}

static TILE_GET_INFO( get_jingbell_reel1_tile_info )
{
	int code = gp98_reel1_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code)+(((tile_index+1)&0x3)*0x100),
			(code & 0x80) ? 0xc : 0,
			0);
}


static TILE_GET_INFO( get_gp98_reel1_tile_info )
{
	int code = gp98_reel1_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code*4)+(tile_index&0x3),
			0,
			0);
}

static tilemap_t *gp98_reel2_tilemap;
static UINT8 *gp98_reel2_ram;

static WRITE8_HANDLER( gp98_reel2_ram_w )
{
	gp98_reel2_ram[offset] = data;
	tilemap_mark_tile_dirty(gp98_reel2_tilemap,offset);
}

static TILE_GET_INFO( get_jingbell_reel2_tile_info )
{
	int code = gp98_reel2_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code)+(((tile_index+1)&0x3)*0x100),
			(code & 0x80) ? 0xc : 0,
			0);
}

static TILE_GET_INFO( get_gp98_reel2_tile_info )
{
	int code = gp98_reel2_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code*4)+(tile_index&0x3),
			0,
			0);
}


static tilemap_t *gp98_reel3_tilemap;
static UINT8 *gp98_reel3_ram;

static WRITE8_HANDLER( gp98_reel3_ram_w )
{
	gp98_reel3_ram[offset] = data;
	tilemap_mark_tile_dirty(gp98_reel3_tilemap,offset);
}

static TILE_GET_INFO( get_jingbell_reel3_tile_info )
{
	int code = gp98_reel3_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code)+(((tile_index+1)&0x3)*0x100),
			(code & 0x80) ? 0xc : 0,
			0);
}

static TILE_GET_INFO( get_gp98_reel3_tile_info )
{
	int code = gp98_reel3_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code*4)+(tile_index&0x3),
			0,
			0);
}


static tilemap_t *gp98_reel4_tilemap;
static UINT8 *gp98_reel4_ram;

static WRITE8_HANDLER( gp98_reel4_ram_w )
{
	gp98_reel4_ram[offset] = data;
	tilemap_mark_tile_dirty(gp98_reel4_tilemap,offset);
}

static TILE_GET_INFO( get_jingbell_reel4_tile_info )
{
	int code = gp98_reel4_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code)+(((tile_index+1)&0x3)*0x100),
			(code & 0x80) ? 0xc : 0,
			0);
}

static TILE_GET_INFO( get_gp98_reel4_tile_info )
{
	int code = gp98_reel4_ram[tile_index];

	SET_TILE_INFO(
			0,
			(code*4)+(tile_index&0x3),
			0,
			0);
}




static UINT8   *fg_tile_ram, *fg_color_ram;
static UINT8   *bg_scroll, *bg_scroll2;

static tilemap_t *fg_tilemap;

static int video_enable;

static WRITE8_HANDLER( bg_scroll_w )
{
	bg_scroll[offset] = data;
//  tilemap_set_scrolly(bg_tilemap,offset,data);
}


static TILE_GET_INFO( get_fg_tile_info )
{
	int code = fg_tile_ram[tile_index] | (fg_color_ram[tile_index] << 8);
	SET_TILE_INFO(1, code, (4*(code >> 14)+3), 0);
}

static WRITE8_HANDLER( fg_tile_w )
{
	fg_tile_ram[offset] = data;
	tilemap_mark_tile_dirty(fg_tilemap,offset);
}

static WRITE8_HANDLER( fg_color_w )
{
	fg_color_ram[offset] = data;
	tilemap_mark_tile_dirty(fg_tilemap,offset);
}

static VIDEO_START(jingbell)
{
	fg_tilemap = tilemap_create(machine, get_fg_tile_info, tilemap_scan_rows,	8,  8,	0x80,0x20);
	tilemap_set_transparent_pen(fg_tilemap, 0);

	gp98_reel1_tilemap = tilemap_create(machine,get_jingbell_reel1_tile_info,tilemap_scan_rows,8,32, 128, 8);
	gp98_reel2_tilemap = tilemap_create(machine,get_jingbell_reel2_tile_info,tilemap_scan_rows,8,32, 128, 8);
	gp98_reel3_tilemap = tilemap_create(machine,get_jingbell_reel3_tile_info,tilemap_scan_rows,8,32, 128, 8);
	gp98_reel4_tilemap = tilemap_create(machine,get_jingbell_reel4_tile_info,tilemap_scan_rows,8,32, 128, 8);

	tilemap_set_scroll_cols(gp98_reel1_tilemap, 128);
	tilemap_set_scroll_cols(gp98_reel2_tilemap, 128);
	tilemap_set_scroll_cols(gp98_reel3_tilemap, 128);
	tilemap_set_scroll_cols(gp98_reel4_tilemap, 128);
}


static VIDEO_START(gp98)
{
	fg_tilemap = tilemap_create(machine, get_fg_tile_info, tilemap_scan_rows,	8,  8,	0x80,0x20);
	tilemap_set_transparent_pen(fg_tilemap, 0);

	gp98_reel1_tilemap = tilemap_create(machine,get_gp98_reel1_tile_info,tilemap_scan_rows,8,32, 128, 8);
	gp98_reel2_tilemap = tilemap_create(machine,get_gp98_reel2_tile_info,tilemap_scan_rows,8,32, 128, 8);
	gp98_reel3_tilemap = tilemap_create(machine,get_gp98_reel3_tile_info,tilemap_scan_rows,8,32, 128, 8);
	gp98_reel4_tilemap = tilemap_create(machine,get_gp98_reel4_tile_info,tilemap_scan_rows,8,32, 128, 8);

	tilemap_set_scroll_cols(gp98_reel1_tilemap, 128);
	tilemap_set_scroll_cols(gp98_reel2_tilemap, 128);
	tilemap_set_scroll_cols(gp98_reel3_tilemap, 128);
	tilemap_set_scroll_cols(gp98_reel4_tilemap, 128);

}


static VIDEO_UPDATE(jingbell)
{
	int layers_ctrl = video_enable ? -1 : 0;

#ifdef MAME_DEBUG
	if (input_code_pressed(screen->machine, KEYCODE_Z))
	{
		int mask = 0;
		if (input_code_pressed(screen->machine, KEYCODE_Q))	mask |= 1;
		if (input_code_pressed(screen->machine, KEYCODE_W))	mask |= 2;
		if (input_code_pressed(screen->machine, KEYCODE_A))	mask |= 4;
		if (mask != 0) layers_ctrl &= mask;
	}
#endif

	if (layers_ctrl & 1)
	{
		int zz,i;
		int startclipmin = 0;
		const rectangle &visarea = screen->visible_area();


		for (i= 0;i < 0x80;i++)
		{
			tilemap_set_scrolly(gp98_reel1_tilemap, i, bg_scroll[i]*2);
			tilemap_set_scrolly(gp98_reel2_tilemap, i, bg_scroll[i+0x80]*2);
			tilemap_set_scrolly(gp98_reel3_tilemap, i, bg_scroll[i+0x100]*2);
			tilemap_set_scrolly(gp98_reel4_tilemap, i, bg_scroll[i+0x180]*2);
		}




		for (zz=0;zz<0x80-8;zz++) // -8 because of visible area (2*8 = 16)
		{
			rectangle clip;
			int rowenable = bg_scroll2[zz];

			/* draw top of screen */
			clip.min_x = visarea.min_x;
			clip.max_x = visarea.max_x;
			clip.min_y = startclipmin;
			clip.max_y = startclipmin+2;

			bitmap_fill(bitmap,&clip,screen->machine->pens[rowenable]);

			if (rowenable==0)
			{ // 0 and 1 are the same? or is there a global switchoff?
				tilemap_draw(bitmap,&clip,gp98_reel1_tilemap,0,0);
			}
			else if (rowenable==1)
			{
				tilemap_draw(bitmap,&clip,gp98_reel2_tilemap,0,0);
			}
			else if (rowenable==2)
			{
				tilemap_draw(bitmap,&clip,gp98_reel3_tilemap,0,0);
			}
			else if (rowenable==3)
			{
				tilemap_draw(bitmap,&clip,gp98_reel4_tilemap,0,0);
			}


			startclipmin+=2;
		}

	}
	else					bitmap_fill(bitmap, cliprect, get_black_pen(screen->machine));


	if (layers_ctrl & 2)	tilemap_draw(bitmap, cliprect, fg_tilemap, 0, 0);

	return 0;
}

/***************************************************************************
                                Memory Maps
***************************************************************************/

static int nmi_enable, hopper;

static CUSTOM_INPUT( hopper_r )
{
	return hopper && !(field->port->machine->primary_screen->frame_number()%10);
}

static UINT8 out[3];

static void show_out(void)
{
#ifdef MAME_DEBUG
	popmessage("%02x %02x %02x", out[0], out[1], out[2]);
#endif
}

static WRITE8_HANDLER( jingbell_nmi_and_coins_w )
{
	if ((nmi_enable ^ data) & (~0xdd))
	{
		logerror("PC %06X: nmi_and_coins = %02x\n",cpu_get_pc(space->cpu),data);
//      popmessage("%02x",data);
	}

	coin_counter_w(space->machine, 0,		data & 0x01);	// coin_a
	coin_counter_w(space->machine, 1,		data & 0x04);	// coin_c
	coin_counter_w(space->machine, 2,		data & 0x08);	// key in
	coin_counter_w(space->machine, 3,		data & 0x10);	// coin out mech

	set_led_status(space->machine, 6,		data & 0x40);	// led for coin out / hopper active

	nmi_enable = data;	//  data & 0x80     // nmi enable?

	out[0] = data;
	show_out();
}

static WRITE8_HANDLER( jingbell_video_and_leds_w )
{
	set_led_status(space->machine, 4,	  data & 0x01);	// start?
	set_led_status(space->machine, 5,	  data & 0x04);	// l_bet?

	video_enable	=	  data & 0x40;
	hopper			=	(~data)& 0x80;

	out[1] = data;
	show_out();
}

static WRITE8_HANDLER( jingbell_leds_w )
{
	set_led_status(space->machine, 0, data & 0x01);	// stop_1
	set_led_status(space->machine, 1, data & 0x02);	// stop_2
	set_led_status(space->machine, 2, data & 0x04);	// stop_3
	set_led_status(space->machine, 3, data & 0x08);	// stop
	// data & 0x10?

	out[2] = data;
	show_out();
}

static UINT8 igs_magic[2];

static WRITE8_HANDLER( jingbell_magic_w )
{
	igs_magic[offset] = data;

	if (offset == 0)
		return;

	switch(igs_magic[0])
	{
		case 0x01:
			break;

		default:
//          popmessage("magic %x <- %04x",igs_magic[0],data);
			logerror("%06x: warning, writing to igs_magic %02x = %02x\n", cpu_get_pc(space->cpu), igs_magic[0], data);
	}
}

static READ8_HANDLER( jingbell_magic_r )
{
	switch(igs_magic[0])
	{
		case 0x00:
			if ( !(igs_magic[1] & 0x01) )	return input_port_read(space->machine, "DSW1");
			if ( !(igs_magic[1] & 0x02) )	return input_port_read(space->machine, "DSW2");
			if ( !(igs_magic[1] & 0x04) )	return input_port_read(space->machine, "DSW3");
			if ( !(igs_magic[1] & 0x08) )	return input_port_read(space->machine, "DSW4");
			if ( !(igs_magic[1] & 0x10) )	return input_port_read(space->machine, "DSW5");
			logerror("%06x: warning, reading dsw with igs_magic[1] = %02x\n", cpu_get_pc(space->cpu), igs_magic[1]);
			break;

		default:
			logerror("%06x: warning, reading with igs_magic = %02x\n", cpu_get_pc(space->cpu), igs_magic[0]);
	}

	return 0;
}




static ADDRESS_MAP_START( jingbell_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE( 0x00000, 0x0f3ff ) AM_ROM
	AM_RANGE( 0x0f400, 0x0ffff ) AM_RAM AM_BASE_SIZE_GENERIC( nvram )
ADDRESS_MAP_END

static ADDRESS_MAP_START( jingbell_portmap, ADDRESS_SPACE_IO, 8 )
	AM_RANGE( 0x0000, 0x003f ) AM_RAM // Z180 internal regs

	AM_RANGE( 0x1000, 0x11ff ) AM_RAM_WRITE( bg_scroll_w ) AM_BASE( &bg_scroll )

	AM_RANGE( 0x2000, 0x23ff ) AM_RAM_WRITE( paletteram_xBBBBBGGGGGRRRRR_split1_w ) AM_BASE_GENERIC( paletteram )
	AM_RANGE( 0x2400, 0x27ff ) AM_RAM_WRITE( paletteram_xBBBBBGGGGGRRRRR_split2_w ) AM_BASE_GENERIC( paletteram2 )

	AM_RANGE( 0x3000, 0x33ff ) AM_RAM_WRITE( gp98_reel1_ram_w )  AM_BASE( &gp98_reel1_ram )
	AM_RANGE( 0x3400, 0x37ff ) AM_RAM_WRITE( gp98_reel2_ram_w )  AM_BASE( &gp98_reel2_ram )
	AM_RANGE( 0x3800, 0x3bff ) AM_RAM_WRITE( gp98_reel3_ram_w )  AM_BASE( &gp98_reel3_ram )
	AM_RANGE( 0x3c00, 0x3fff ) AM_RAM_WRITE( gp98_reel4_ram_w )  AM_BASE( &gp98_reel4_ram )

	AM_RANGE( 0x4000, 0x407f ) AM_RAM AM_BASE( &bg_scroll2 )

	AM_RANGE( 0x5000, 0x5fff ) AM_RAM_WRITE( fg_tile_w )  AM_BASE( &fg_tile_ram )

	AM_RANGE( 0x6480, 0x6480 ) AM_WRITE( jingbell_nmi_and_coins_w )

	AM_RANGE( 0x6481, 0x6481 ) AM_READ_PORT( "SERVICE" )
	AM_RANGE( 0x6482, 0x6482 ) AM_READ_PORT( "COINS" )
	AM_RANGE( 0x6490, 0x6490 ) AM_READ_PORT( "BUTTONS1" )
	AM_RANGE( 0x6491, 0x6491 ) AM_WRITE( jingbell_video_and_leds_w )
	AM_RANGE( 0x6492, 0x6492 ) AM_WRITE( jingbell_leds_w )
	AM_RANGE( 0x64a0, 0x64a0 ) AM_READ_PORT( "BUTTONS2" )

	AM_RANGE( 0x64b0, 0x64b1 ) AM_DEVWRITE( "ymsnd", ym2413_w )

	AM_RANGE( 0x64c0, 0x64c0 ) AM_DEVREADWRITE( "oki", okim6295_r, okim6295_w )

	AM_RANGE( 0x64d0, 0x64d1 ) AM_READWRITE( jingbell_magic_r, jingbell_magic_w )	// DSW1-5

	AM_RANGE( 0x7000, 0x7fff ) AM_RAM_WRITE( fg_color_w ) AM_BASE( &fg_color_ram )

	AM_RANGE( 0x8000, 0xffff ) AM_ROM AM_REGION("data", 0)
ADDRESS_MAP_END


/***************************************************************************
                                Input Ports
***************************************************************************/

static INPUT_PORTS_START( jingbell )
	PORT_START("DSW1")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x00, "W-Up Bonus" )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )	// it's shown in attract mode
	PORT_DIPUNKNOWN( 0x04, 0x04 )
	PORT_DIPUNKNOWN( 0x08, 0x08 )
	PORT_DIPUNKNOWN( 0x10, 0x10 )
	PORT_DIPUNKNOWN( 0x20, 0x20 )
	PORT_DIPUNKNOWN( 0x40, 0x40 )
	PORT_DIPUNKNOWN( 0x80, 0x80 )

	PORT_START("DSW2")
	PORT_DIPUNKNOWN( 0x01, 0x01 )
	PORT_DIPUNKNOWN( 0x02, 0x02 )
	PORT_DIPUNKNOWN( 0x04, 0x04 )
	PORT_DIPUNKNOWN( 0x08, 0x08 )
	PORT_DIPUNKNOWN( 0x10, 0x10 )
	PORT_DIPUNKNOWN( 0x20, 0x20 )
	PORT_DIPUNKNOWN( 0x40, 0x40 )
	PORT_DIPUNKNOWN( 0x80, 0x80 )

	PORT_START("DSW3")
	PORT_DIPUNKNOWN( 0x01, 0x01 )
	PORT_DIPUNKNOWN( 0x02, 0x02 )
	PORT_DIPUNKNOWN( 0x04, 0x04 )
	PORT_DIPUNKNOWN( 0x08, 0x08 )
	PORT_DIPUNKNOWN( 0x10, 0x10 )
	PORT_DIPUNKNOWN( 0x20, 0x20 )
	PORT_DIPUNKNOWN( 0x40, 0x40 )
	PORT_DIPUNKNOWN( 0x80, 0x80 )

	PORT_START("DSW4")
	PORT_DIPUNKNOWN( 0x01, 0x01 )
	PORT_DIPUNKNOWN( 0x02, 0x02 )
	PORT_DIPUNKNOWN( 0x04, 0x04 )
	PORT_DIPUNKNOWN( 0x08, 0x08 )
	PORT_DIPUNKNOWN( 0x10, 0x10 )
	PORT_DIPUNKNOWN( 0x20, 0x20 )
	PORT_DIPUNKNOWN( 0x40, 0x40 )
	PORT_DIPUNKNOWN( 0x80, 0x80 )

	PORT_START("DSW5")
	PORT_DIPUNKNOWN( 0x01, 0x01 )
	PORT_DIPUNKNOWN( 0x02, 0x02 )
	PORT_DIPUNKNOWN( 0x04, 0x04 )
	PORT_DIPUNKNOWN( 0x08, 0x08 )
	PORT_DIPUNKNOWN( 0x10, 0x10 )
	PORT_DIPUNKNOWN( 0x20, 0x20 )
	PORT_DIPUNKNOWN( 0x40, 0x40 )
	PORT_DIPUNKNOWN( 0x80, 0x80 )

	PORT_START("SERVICE")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_NAME("Memory Clear")	// stats, memory
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SPECIAL ) PORT_CUSTOM( hopper_r, (void *)0 )	// hopper sensor
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_GAMBLE_PAYOUT ) PORT_NAME("Pay Out")
	PORT_SERVICE_NO_TOGGLE( 0x20, IP_ACTIVE_LOW )	// test (press during boot)
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_GAMBLE_BOOK ) PORT_NAME("Records")
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN  )

	PORT_START("COINS")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_GAMBLE_KEYIN )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_GAMBLE_KEYOUT ) PORT_NAME("Key Down")	// pays out
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("BUTTONS1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_SLOT_STOP1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_SLOT_STOP2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_SLOT_STOP3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_CODE(KEYCODE_V) PORT_NAME("Stop")
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )

	PORT_START("BUTTONS2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1  ) PORT_NAME("Start / H_Dup")
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_GAMBLE_LOW ) PORT_NAME("Small")
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Left Bet / H_Dup")
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_GAMBLE_TAKE )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("Right Bet / Dup")
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_GAMBLE_HIGH ) PORT_NAME("Big")
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNKNOWN )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNKNOWN )
INPUT_PORTS_END

/***************************************************************************
                                Graphics Layout
***************************************************************************/

static const gfx_layout layout_8x8x6 =
{
	8, 8,
	RGN_FRAC(1, 3),
	6,
	{ RGN_FRAC(0,3)+8,RGN_FRAC(0,3)+0,
	  RGN_FRAC(1,3)+8,RGN_FRAC(1,3)+0,
	  RGN_FRAC(2,3)+8,RGN_FRAC(2,3)+0 },
	{ STEP8(0,1) },
	{ STEP8(0,2*8) },
	8*8*2
};

static const gfx_layout layout_8x32x6 =
{
	8, 32,
	RGN_FRAC(1, 3),
	6,
	{ RGN_FRAC(0,3)+8,RGN_FRAC(0,3)+0,
	  RGN_FRAC(1,3)+8,RGN_FRAC(1,3)+0,
	  RGN_FRAC(2,3)+8,RGN_FRAC(2,3)+0 },
	{ STEP8(0,1) },
	{ STEP32(0,2*8) },
	8*32*2
};

static GFXDECODE_START( jingbell )
	GFXDECODE_ENTRY( "gfx1", 0, layout_8x32x6, 0, 16 )
	GFXDECODE_ENTRY( "gfx2", 0, layout_8x8x6,  0, 16 )
GFXDECODE_END

static const gfx_layout tiles8x8_layout =
{
	8,8,
	RGN_FRAC(1,3),
	6,
	{ RGN_FRAC(2,3)+0, RGN_FRAC(2,3)+1, RGN_FRAC(1,3)+0, RGN_FRAC(1,3)+1, RGN_FRAC(0,3)+0, RGN_FRAC(0,3)+1 },
	{ 8,10,12,14, 0, 2, 4, 6, },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16 },
	16*8
};

static const gfx_layout tiles8x32_layout =
{
	8,32,
	RGN_FRAC(1,3),
	6,
	{ RGN_FRAC(2,3)+0, RGN_FRAC(2,3)+1, RGN_FRAC(1,3)+0, RGN_FRAC(1,3)+1, RGN_FRAC(0,3)+0, RGN_FRAC(0,3)+1 },
	{ 8,10,12,14, 0, 2, 4, 6, },
	{ 0*16, 1*16, 2*16, 3*16, 4*16, 5*16, 6*16, 7*16,8*16,9*16,10*16,11*16,12*16,13*16,14*16,15*16,16*16,17*16,18*16,19*16,20*16,21*16,22*16,23*16,24*16,25*16,26*16,27*16,28*16,29*16,30*16,31*16 },
	32*16
};

static GFXDECODE_START( gp98 )
	GFXDECODE_ENTRY( "gfx1", 0, tiles8x32_layout, 0, 16 )
	GFXDECODE_ENTRY( "gfx2", 0, tiles8x8_layout, 0, 16 )
GFXDECODE_END


/***************************************************************************
                                Machine Drivers
***************************************************************************/

static MACHINE_RESET( jingbell )
{
	nmi_enable		=	0;
	hopper			=	0;
	video_enable	=	1;
}

static INTERRUPT_GEN( jingbell_interrupt )
{
	 if (nmi_enable & 0x80)
		cpu_set_input_line(device, INPUT_LINE_NMI, PULSE_LINE);
}

static MACHINE_DRIVER_START( jingbell )
	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", Z180, XTAL_12MHz / 2)	/* HD64180RP8, 8 MHz? */
	MDRV_CPU_PROGRAM_MAP(jingbell_map)
	MDRV_CPU_IO_MAP(jingbell_portmap)
	MDRV_CPU_VBLANK_INT("screen",jingbell_interrupt)

	MDRV_MACHINE_RESET(jingbell)

	MDRV_NVRAM_HANDLER(generic_0fill)

	/* video hardware */
	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(512, 256)
	MDRV_SCREEN_VISIBLE_AREA(0, 512-1, 0, 256-16-1)

	MDRV_GFXDECODE(jingbell)
	MDRV_PALETTE_LENGTH(0x400)

	MDRV_VIDEO_START(jingbell)
	MDRV_VIDEO_UPDATE(jingbell)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")
	MDRV_SOUND_ADD("ymsnd", YM2413, XTAL_3_579545MHz)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)

	MDRV_OKIM6295_ADD("oki", XTAL_12MHz / 12, OKIM6295_PIN7_HIGH)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)
MACHINE_DRIVER_END

static MACHINE_DRIVER_START( gp98 )
	MDRV_IMPORT_FROM(jingbell)
	MDRV_GFXDECODE(gp98)

	MDRV_VIDEO_START(gp98)
MACHINE_DRIVER_END


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

Jingle Bell
(C) 1998 IGS

CPU:
    1x HD64180RP8 (u18)(main)
    2x NEC D8255AC (u19,u20)(main)
    1x custom IGS009-F56D246 (u22)
    1x U3567HX881 (u45)(sound equivalent to ym2413)
    1x AR17961-AP0848 (u46)(sound equivalent to m6295)
    1x oscillator 12.000
    1x oscillator 3.579545

ROMs:
    3x M27C512 (1,2,3)
    1x LE27C2001F (4)
    2x MX27C2000 (5,6)
    1x D27256 (7)
    1x MX27C512 (v)
    1x NM27C010 (sp)
    2x PALCE16V8H (read protected)
    1x PALCE22V10H (read protected)
    1x PALCE22V10H (dumped)

Notes:
    1x 38x2 edge connector
    1x 10x2 edge connector
    1x pushbutton
    1x battery
    5x 8x2 switches dip

12/02/2008 f205v

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

ROM_START( jingbell )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "jinglev133i.u44", 0x00000, 0x10000, CRC(df60dc39) SHA1(ff57afd50c045b621395353fdc50ffd1e1b65e9e) )

	ROM_REGION( 0x8000, "data", 0 )
	ROM_LOAD( "jingle133i7.u43", 0x0000, 0x8000, CRC(a7affa15) SHA1(f9d33e32b57ad267d383e075663994e0af0b3016) )

	ROM_REGION( 0x30000, "gfx1", 0 )
	ROM_LOAD( "jingle133i1.u17", 0x00000, 0x10000, CRC(cadd7910) SHA1(aa514ddb29c8c9a77478d56bea4ae71995fdd518) )
	ROM_LOAD( "jingle133i2.u16", 0x10000, 0x10000, CRC(a9e1f5aa) SHA1(68d7f4e9e9a5bbce0904e406ee6fe82e9e52a9ba) )
	ROM_LOAD( "jingle133i3.u15", 0x20000, 0x10000, CRC(865b7d3a) SHA1(c1dff3a27d747ee499aaee0c4468534f0249a3e5) )

	ROM_REGION( 0xc0000, "gfx2", 0 )
	ROM_LOAD( "jingle133i4.u25", 0x00000, 0x40000, CRC(7aa1d344) SHA1(141e27df93cb35ab852d9022e0b08bd596f1186b) )
	ROM_LOAD( "jingle133i5.u24", 0x40000, 0x40000, CRC(021261d1) SHA1(5b23f9bd818193c343f9f4c9317955b17efb8cfa) )
	ROM_LOAD( "jingle133i6.u23", 0x80000, 0x40000, CRC(c40228fd) SHA1(4dc05337d64ed2b8d66fc5f0ca8ffbf96799f768) )

	ROM_REGION( 0x40000, "oki", 0 )
	ROM_LOAD( "jingle133isp.u38", 0x00000, 0x20000, CRC(a42d73b1) SHA1(93157e9630d5c8bb34c71186415d0aa8c5d51951) )

	ROM_REGION( 0x2dd, "plds",0 )
	ROM_LOAD( "palce16v8h-ch-jin-u12v.u12", 0x000, 0x117, BAD_DUMP CRC(c89d2f52) SHA1(f9d52d9c42ef95b7b85bbf6d09888ebdeac11fd3) )
	ROM_LOAD( "palce16v8h-ch-jin-u33v.u33", 0x000, 0x117, BAD_DUMP CRC(c89d2f52) SHA1(f9d52d9c42ef95b7b85bbf6d09888ebdeac11fd3) )
	ROM_LOAD( "palce22v10h-ajbu24.u24",     0x000, 0x2dd, CRC(6310f441) SHA1(b610e170ccca1fcb06a57f718ece1408b696ba9c) )
	ROM_LOAD( "palce22v10h-ch-jin-u27.u27", 0x000, 0x2dd, BAD_DUMP CRC(5c4e9024) SHA1(e9d1e4df3d79c21f4ce053a84bb7b7a43d650f91) )
ROM_END

static DRIVER_INIT( jingbell )
{
	int i;
	UINT8 *rom  = (UINT8 *)memory_region(machine, "maincpu");
	size_t size = memory_region_length(machine, "maincpu");

	for (i=0; i<size; i++)
	{
		UINT8 x = rom[i];
		if (i & 0x0080)
		{
			if ((i & 0x0420) == 0x0420)	x ^= 0x20;
			else						x ^= 0x22;
		}
		else
		{
			if (i & 0x0200)	x ^= 0x02;
			else			x ^= 0x22;
		}

		if ((i & 0x1208) == 0x1208)	x ^= 0x01;

		rom[i] = x;
	}

	// protection patch
	rom[0x01f19] = 0x18;
}

ROM_START( gp98 )
	ROM_REGION( 0x20000, "maincpu", 0 )
	ROM_LOAD( "prg", 0x00000, 0x20000, CRC(1c02b8cc) SHA1(b8a29cbd96581f8ae1c1028279b8ee703be29f5f) )

	ROM_REGION( 0x8000, "data", 0 )
	ROM_COPY( "maincpu", 0x18000, 0x00000, 0x8000 )

	ROM_REGION( 0x180000, "tempgfx", 0 ) // 6bpp (2bpp per rom) font at tile # 0x4000
	ROM_LOAD( "49", 0x000000, 0x80000, BAD_DUMP CRC(a9d9367d) SHA1(91c74740fc8394f1e1cd68feb8c993afd2042d70) )
	ROM_LOAD( "50", 0x080000, 0x80000, CRC(48f6190d) SHA1(b430131a258b4e2fc178ac0e3e3f0010a82eac65) )
	ROM_LOAD( "51", 0x100000, 0x80000, CRC(30a2ef85) SHA1(38ea637acd83b175eccd2969ef21879265b88992) )

	ROM_REGION( 0xc0000, "gfx1", 0 )
	ROM_COPY( "tempgfx", 0x000000, 0x00000, 0x40000 )
	ROM_COPY( "tempgfx", 0x080000, 0x40000, 0x40000 )
	ROM_COPY( "tempgfx", 0x100000, 0x80000, 0x40000 )

	ROM_REGION( 0xc0000, "gfx2", 0 )
	ROM_COPY( "tempgfx", 0x040000, 0x00000, 0x40000 )
	ROM_COPY( "tempgfx", 0x0c0000, 0x40000, 0x40000 )
	ROM_COPY( "tempgfx", 0x140000, 0x80000, 0x40000 )


	ROM_REGION( 0x40000, "oki", ROMREGION_ERASE00 )
	/* no OKI on this */
ROM_END

GAME( 1995?, jingbell, 0, jingbell, jingbell, jingbell, ROT0, "IGS", "Jingle Bell (Italy, V133I)", GAME_NOT_WORKING | GAME_IMPERFECT_GRAPHICS | GAME_UNEMULATED_PROTECTION )
GAME( 1998,  gp98,     0,     gp98, jingbell,        0, ROT0, "Romtec Co. Ltd", "Grand Prix '98",GAME_NOT_WORKING| GAME_NO_SOUND )
