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

88 Games (c) 1988 Konami

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

#include "driver.h"
#include "vidhrdw/generic.h"
#include "cpu/konami/konami.h"
#include "cpu/z80/z80.h"
#include "vidhrdw/konamiic.h"


static void k88games_init_machine( void );
static void k88games_banking( int lines );

static unsigned char *ram;
static int videobank;

extern int k88games_priority;
int k88games_vh_start(void);
void k88games_vh_stop(void);
void k88games_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);



static int k88games_interrupt(void)
{
	if (K052109_is_IRQ_enabled()) return interrupt();
	else return ignore_interrupt();
}

static int zoomreadroms;

static int bankedram_r(int offset)
{
	if (videobank) return ram[offset];
	else
	{
		if (zoomreadroms)
			return K051316_rom_r(offset);
		else
			return K051316_r(offset);
	}
}

static void bankedram_w(int offset,int data)
{
	if (videobank) ram[offset] = data;
	else K051316_w(offset,data);
}

static void k88games_5f84_w(int offset,int data)
{
	/* bits 0/1 coin counters */
	coin_counter_w(0,data & 0x01);
	coin_counter_w(1,data & 0x02);

	/* bit 2 enables ROM reading from the 051316 */
	/* also 5fce == 2 read roms, == 3 read ram */
	zoomreadroms = data & 0x04;

	if (data & 0xf8)
	{
		char buf[40];
		sprintf(buf,"5f84 = %02x",data);
		usrintf_showmessage(buf);
	}
}

static void k88games_sh_irqtrigger_w(int offset,int data)
{
	cpu_cause_interrupt(1,0xff);
}

/* handle fake button for speed cheat */
static int cheat_r(int offset)
{
	int res;
	static int cheat = 0;
	static int bits[] = { 0xee, 0xff, 0xbb, 0xaa };

	res = readinputport(1);

	if ((readinputport(0) & 0x08) == 0)
	{
		res |= 0x55;
		res &= bits[cheat];
		cheat = (++cheat)%4;
	}
	return res;
}

static int speech_chip;

static void speech_control_w( int offset, int data )
{
	int reset = ( ( data >> 1 ) & 1 );
	int start = ( ~data ) & 1;

	speech_chip = ( data & 4 ) ? 1 : 0;

	UPD7759_reset_w( speech_chip, reset );
	UPD7759_start_w( speech_chip, start );
}

static void speech_msg_w( int offset, int data )
{
	UPD7759_message_w( speech_chip, data );
}



static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0x1fff, MRA_RAM },	/* banked ROM + palette RAM */
	{ 0x2000, 0x37ff, MRA_RAM },
	{ 0x3800, 0x3fff, bankedram_r },
	{ 0x5f94, 0x5f94, input_port_0_r },
//	{ 0x5f95, 0x5f95, input_port_1_r },
	{ 0x5f95, 0x5f95, cheat_r },	/* P1 IO and handle fake button for cheating */
	{ 0x5f96, 0x5f96, input_port_2_r },
	{ 0x5f97, 0x5f97, input_port_3_r },
	{ 0x5f9b, 0x5f9b, input_port_4_r },
	{ 0x4000, 0x7fff, K052109_051960_r },
	{ 0x8000, 0xffff, MRA_ROM },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0x0fff, MWA_RAM },	/* banked ROM */
	{ 0x1000, 0x1fff, paletteram_xBBBBBGGGGGRRRRR_swap_w, &paletteram },	/* banked ROM + palette RAM */
	{ 0x2000, 0x37ff, MWA_RAM },
	{ 0x3800, 0x3fff, bankedram_w, &ram },
	{ 0x5f84, 0x5f84, k88games_5f84_w },
	{ 0x5f88, 0x5f88, watchdog_reset_w },
	{ 0x5f8c, 0x5f8c, soundlatch_w },
	{ 0x5f90, 0x5f90, k88games_sh_irqtrigger_w },
	{ 0x5fc0, 0x5fcf, K051316_ctrl_w },
	{ 0x4000, 0x7fff, K052109_051960_w },
	{ 0x8000, 0xffff, MWA_ROM },
	{ -1 }	/* end of table */
};

static struct MemoryReadAddress sound_readmem[] =
{
	{ 0x0000, 0x7fff, MRA_ROM },
	{ 0x8000, 0x87ff, MRA_RAM },
	{ 0xa000, 0xa000, soundlatch_r },
	{ 0xc001, 0xc001, YM2151_status_port_0_r },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress sound_writemem[] =
{
	{ 0x0000, 0x7fff, MWA_ROM },
	{ 0x8000, 0x87ff, MWA_RAM },
	{ 0x9000, 0x9000, speech_msg_w },
	{ 0xc000, 0xc000, YM2151_register_port_0_w },
	{ 0xc001, 0xc001, YM2151_data_port_0_w },
	{ 0xe000, 0xe000, speech_control_w },
	{ -1 }	/* end of table */
};



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

	Input Ports

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

INPUT_PORTS_START( input_ports )
	PORT_START
	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_UNKNOWN )
	/* Fake button to press buttons 1 and 3 impossibly fast. Handle via konami_IN1_r */
	PORT_BITX(0x08, IP_ACTIVE_LOW, IPT_BUTTON4 | IPF_CHEAT | IPF_PLAYER1, "Run Like Hell Cheat", IP_KEY_DEFAULT, IP_JOY_DEFAULT )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "World Records" )
	PORT_DIPSETTING(    0x20, "Don't Erase" )
	PORT_DIPSETTING(    0x00, "Erase on Reset" )
	PORT_SERVICE( 0x40, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER1 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER2 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER3 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER3 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START3 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER4 )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 | IPF_PLAYER4 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON3 | IPF_PLAYER4 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START4 )

	PORT_START
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
	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(    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_DIPSETTING(    0x00, DEF_STR( Free_Play ) )
	PORT_DIPNAME( 0xf0, 0xf0, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x50, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0x70, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x90, DEF_STR( 1C_7C ) )
//	PORT_DIPSETTING(    0x00, "Disabled" )

	PORT_START
	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( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x60, 0x60, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x60, "Easy" )
	PORT_DIPSETTING(    0x40, "Normal" )
	PORT_DIPSETTING(    0x20, "Hard" )
	PORT_DIPSETTING(    0x00, "Hardest" )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END



static struct YM2151interface ym2151_interface =
{
	1,			/* 1 chip */
	3579545,	/* 3.579545 MHz */
	{ YM3012_VOL(75,MIXER_PAN_LEFT,75,MIXER_PAN_RIGHT) },
	{ 0 }
};

static struct UPD7759_interface upd7759_interface =
{
	2,							/* number of chips */
	UPD7759_STANDARD_CLOCK,
	{ 30, 30 },					/* volume */
	{ 5, 6 },					/* memory region */
	UPD7759_STANDALONE_MODE,	/* chip mode */
	{0}
};



static struct MachineDriver machine_driver =
{
	{
		{
			CPU_KONAMI,
			3000000, /* ? */
			0,
			readmem,writemem,0,0,
			k88games_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			3579545,
			4,
			sound_readmem, sound_writemem,0,0,
			ignore_interrupt,0	/* interrupts are triggered by the main CPU */
		}
	},
	60, DEFAULT_60HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	k88games_init_machine,

	/* video hardware */
	64*8, 32*8, { 13*8, (64-13)*8-1, 2*8, 30*8-1 },
	0,	/* gfx decoded by konamiic.c */
	2048, 2048,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	k88games_vh_start,
	k88games_vh_stop,
	k88games_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_YM2151,
			&ym2151_interface
		},
		{
			SOUND_UPD7759,
			&upd7759_interface
		}
	}
};



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

  Game ROMs

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

ROM_START( k88games_rom )
	ROM_REGION( 0x21000 ) /* code + banked roms + space for banked ram */
    ROM_LOAD( "861m01.k18", 0x08000, 0x08000, 0x4a4e2959 )
	ROM_LOAD( "861m02.k16", 0x10000, 0x10000, 0xe19f15f6 )

	ROM_REGION( 0x080000 ) /* graphics ( dont dispose as the program can read them ) */
	ROM_LOAD_GFX_EVEN( "861a08.a", 0x000000, 0x10000, 0x77a00dd6 )	/* characters */
	ROM_LOAD_GFX_ODD ( "861a08.c", 0x000000, 0x10000, 0xb422edfc )
	ROM_LOAD_GFX_EVEN( "861a08.b", 0x020000, 0x10000, 0x28a8304f )
	ROM_LOAD_GFX_ODD ( "861a08.d", 0x020000, 0x10000, 0xe01a3802 )
	ROM_LOAD_GFX_EVEN( "861a09.a", 0x040000, 0x10000, 0xdf8917b6 )
	ROM_LOAD_GFX_ODD ( "861a09.c", 0x040000, 0x10000, 0xf577b88f )
	ROM_LOAD_GFX_EVEN( "861a09.b", 0x060000, 0x10000, 0x4917158d )
	ROM_LOAD_GFX_ODD ( "861a09.d", 0x060000, 0x10000, 0x2bb3282c )

	ROM_REGION( 0x100000 ) /* graphics ( dont dispose as the program can read them ) */
	ROM_LOAD_GFX_EVEN( "861a05.a", 0x000000, 0x10000, 0xcedc19d0 )	/* sprites */
	ROM_LOAD_GFX_ODD ( "861a05.e", 0x000000, 0x10000, 0x725af3fc )
	ROM_LOAD_GFX_EVEN( "861a05.b", 0x020000, 0x10000, 0xdb2a8808 )
	ROM_LOAD_GFX_ODD ( "861a05.f", 0x020000, 0x10000, 0x32d830ca )
	ROM_LOAD_GFX_EVEN( "861a05.c", 0x040000, 0x10000, 0xcf03c449 )
	ROM_LOAD_GFX_ODD ( "861a05.g", 0x040000, 0x10000, 0xfd51c4ea )
	ROM_LOAD_GFX_EVEN( "861a05.d", 0x060000, 0x10000, 0x97d78c77 )
	ROM_LOAD_GFX_ODD ( "861a05.h", 0x060000, 0x10000, 0x60d0c8a5 )
	ROM_LOAD_GFX_EVEN( "861a06.a", 0x080000, 0x10000, 0x85e2e30e )
	ROM_LOAD_GFX_ODD ( "861a06.e", 0x080000, 0x10000, 0x6f96651c )
	ROM_LOAD_GFX_EVEN( "861a06.b", 0x0a0000, 0x10000, 0xce17eaf0 )
	ROM_LOAD_GFX_ODD ( "861a06.f", 0x0a0000, 0x10000, 0x88310bf3 )
	ROM_LOAD_GFX_EVEN( "861a06.c", 0x0c0000, 0x10000, 0xa568b34e )
	ROM_LOAD_GFX_ODD ( "861a06.g", 0x0c0000, 0x10000, 0x4a55beb3 )
	ROM_LOAD_GFX_EVEN( "861a06.d", 0x0e0000, 0x10000, 0xbc70ab39 )
	ROM_LOAD_GFX_ODD ( "861a06.h", 0x0e0000, 0x10000, 0xd906b79b )

	ROM_REGION( 0x040000 ) /* graphics ( dont dispose as the program can read them ) */
	ROM_LOAD( "861a04.a", 0x000000, 0x10000, 0x092a8b15 )	/* zoom/rotate */
	ROM_LOAD( "861a04.b", 0x010000, 0x10000, 0x75744b56 )
	ROM_LOAD( "861a04.c", 0x020000, 0x10000, 0xa00021c5 )
	ROM_LOAD( "861a04.d", 0x030000, 0x10000, 0xd208304c )

	ROM_REGION( 0x10000 ) /* Z80 code */
	ROM_LOAD( "861d01.d9", 0x00000, 0x08000, 0x0ff1dec0 )

	ROM_REGION( 0x20000 ) /* samples for UPD7759 #0 */
	ROM_LOAD( "861a07.a", 0x000000, 0x10000, 0x5d035d69 )
	ROM_LOAD( "861a07.b", 0x010000, 0x10000, 0x6337dd91 )

	ROM_REGION( 0x20000 ) /* samples for UPD7759 #1 */
	ROM_LOAD( "861a07.c", 0x000000, 0x10000, 0x5067a38b )
	ROM_LOAD( "861a07.d", 0x010000, 0x10000, 0x86731451 )

	ROM_REGION(0x0200)	/* PROMs */
	ROM_LOAD( "861.g3",   0x0000, 0x0100, 0x429785db )	/* priority encoder (not used) */
ROM_END

ROM_START( konami88_rom )
	ROM_REGION( 0x21000 ) /* code + banked roms + space for banked ram */
	ROM_LOAD( "861.e03", 0x08000, 0x08000, 0x55979bd9 )
	ROM_LOAD( "861.e02", 0x10000, 0x10000, 0x5b7e98a6 )

	ROM_REGION( 0x080000 ) /* graphics ( dont dispose as the program can read them ) */
	ROM_LOAD_GFX_EVEN( "861a08.a", 0x000000, 0x10000, 0x77a00dd6 )	/* characters */
	ROM_LOAD_GFX_ODD ( "861a08.c", 0x000000, 0x10000, 0xb422edfc )
	ROM_LOAD_GFX_EVEN( "861a08.b", 0x020000, 0x10000, 0x28a8304f )
	ROM_LOAD_GFX_ODD ( "861a08.d", 0x020000, 0x10000, 0xe01a3802 )
	ROM_LOAD_GFX_EVEN( "861a09.a", 0x040000, 0x10000, 0xdf8917b6 )
	ROM_LOAD_GFX_ODD ( "861a09.c", 0x040000, 0x10000, 0xf577b88f )
	ROM_LOAD_GFX_EVEN( "861a09.b", 0x060000, 0x10000, 0x4917158d )
	ROM_LOAD_GFX_ODD ( "861a09.d", 0x060000, 0x10000, 0x2bb3282c )

	ROM_REGION( 0x100000 ) /* graphics ( dont dispose as the program can read them ) */
	ROM_LOAD_GFX_EVEN( "861a05.a", 0x000000, 0x10000, 0xcedc19d0 )	/* sprites */
	ROM_LOAD_GFX_ODD ( "861a05.e", 0x000000, 0x10000, 0x725af3fc )
	ROM_LOAD_GFX_EVEN( "861a05.b", 0x020000, 0x10000, 0xdb2a8808 )
	ROM_LOAD_GFX_ODD ( "861a05.f", 0x020000, 0x10000, 0x32d830ca )
	ROM_LOAD_GFX_EVEN( "861a05.c", 0x040000, 0x10000, 0xcf03c449 )
	ROM_LOAD_GFX_ODD ( "861a05.g", 0x040000, 0x10000, 0xfd51c4ea )
	ROM_LOAD_GFX_EVEN( "861a05.d", 0x060000, 0x10000, 0x97d78c77 )
	ROM_LOAD_GFX_ODD ( "861a05.h", 0x060000, 0x10000, 0x60d0c8a5 )
	ROM_LOAD_GFX_EVEN( "861a06.a", 0x080000, 0x10000, 0x85e2e30e )
	ROM_LOAD_GFX_ODD ( "861a06.e", 0x080000, 0x10000, 0x6f96651c )
	ROM_LOAD_GFX_EVEN( "861a06.b", 0x0a0000, 0x10000, 0xce17eaf0 )
	ROM_LOAD_GFX_ODD ( "861a06.f", 0x0a0000, 0x10000, 0x88310bf3 )
	ROM_LOAD_GFX_EVEN( "861a06.c", 0x0c0000, 0x10000, 0xa568b34e )
	ROM_LOAD_GFX_ODD ( "861a06.g", 0x0c0000, 0x10000, 0x4a55beb3 )
	ROM_LOAD_GFX_EVEN( "861a06.d", 0x0e0000, 0x10000, 0xbc70ab39 )
	ROM_LOAD_GFX_ODD ( "861a06.h", 0x0e0000, 0x10000, 0xd906b79b )

	ROM_REGION( 0x040000 ) /* graphics ( dont dispose as the program can read them ) */
	ROM_LOAD( "861a04.a", 0x000000, 0x10000, 0x092a8b15 )	/* zoom/rotate */
	ROM_LOAD( "861a04.b", 0x010000, 0x10000, 0x75744b56 )
	ROM_LOAD( "861a04.c", 0x020000, 0x10000, 0xa00021c5 )
	ROM_LOAD( "861a04.d", 0x030000, 0x10000, 0xd208304c )

	ROM_REGION( 0x10000 ) /* Z80 code */
	ROM_LOAD( "861d01.d9", 0x00000, 0x08000, 0x0ff1dec0 )

	ROM_REGION( 0x20000 ) /* samples for UPD7759 #0 */
	ROM_LOAD( "861a07.a", 0x000000, 0x10000, 0x5d035d69 )
	ROM_LOAD( "861a07.b", 0x010000, 0x10000, 0x6337dd91 )

	ROM_REGION( 0x20000 ) /* samples for UPD7759 #1 */
	ROM_LOAD( "861a07.c", 0x000000, 0x10000, 0x5067a38b )
	ROM_LOAD( "861a07.d", 0x010000, 0x10000, 0x86731451 )

	ROM_REGION(0x0200)	/* PROMs */
	ROM_LOAD( "861.g3",   0x0000, 0x0100, 0x429785db )	/* priority encoder (not used) */
ROM_END

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

  Game driver(s)

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

static void k88games_banking( int lines )
{
	unsigned char *RAM = Machine->memory_region[0];
	int offs;

if (errorlog) fprintf(errorlog,"%04x: bank select %02x\n",cpu_get_pc(),lines);

	/* bits 0-2 select ROM bank for 0000-1fff */
	/* bit 3: when 1, palette RAM at 1000-1fff */
	/* bit 4: when 0, 051316 RAM at 3800-3fff; when 1, work RAM at 2000-3fff (NVRAM 3370-37ff) */
	offs = 0x10000 + (lines & 0x07) * 0x2000;
	memcpy(RAM,&RAM[offs],0x1000);
	if (lines & 0x08)
	{
		if (paletteram != &RAM[0x1000])
		{
			memcpy(&RAM[0x1000],paletteram,0x1000);
			paletteram = &RAM[0x1000];
		}
	}
	else
	{
		if (paletteram != &RAM[0x20000])
		{
			memcpy(&RAM[0x20000],paletteram,0x1000);
			paletteram = &RAM[0x20000];
		}
		memcpy(&RAM[0x1000],&RAM[offs+0x1000],0x1000);
	}
	videobank = lines & 0x10;

	/* bit 5 = enable char ROM reading through the video RAM */
	K052109_set_RMRD_line((lines & 0x20) ? ASSERT_LINE : CLEAR_LINE);

	/* bit 6 is unknown, 1 most of the time */

	/* bit 7 controls layer priority */
	k88games_priority = lines & 0x80;
}

static void k88games_init_machine( void )
{
	konami_cpu_setlines_callback = k88games_banking;
	paletteram = &Machine->memory_region[0][0x20000];
}



static void gfx_untangle(void)
{
	konami_rom_deinterleave_2(1);
	konami_rom_deinterleave_2(2);
}



static int nvram_load(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
	{
		osd_fread(f,&RAM[0x3370],0x3800-0x3370);
		osd_fclose(f);
	}

	return 1;
}

static void nvram_save(void)
{
	void *f;
	unsigned char *RAM = Machine->memory_region[Machine->drv->cpu[0].memory_region];


	if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,1)) != 0)
	{
		osd_fwrite(f,&RAM[0x3370],0x3800-0x3370);
		osd_fclose(f);
	}
}



struct GameDriver k88games_driver =
{
	__FILE__,
	0,
	"88games",
	"'88 Games",
	"1988",
	"Konami",
	"Nicola Salmoria",
	0,
	&machine_driver,
	0,

	k88games_rom,
	gfx_untangle, 0,
	0,
	0,	/* sound_prom */

	input_ports,

	0, 0, 0,
    ORIENTATION_DEFAULT,

	nvram_load, nvram_save
};


struct GameDriver konami88_driver =
{
	__FILE__,
	&k88games_driver,
	"konami88",
	"Konami '88",
	"1988",
	"Konami",
	"Nicola Salmoria",
	0,
	&machine_driver,
	0,

	konami88_rom,
	gfx_untangle, 0,
	0,
	0,	/* sound_prom */

	input_ports,

	0, 0, 0,
    ORIENTATION_DEFAULT,

	nvram_load, nvram_save
};
