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

Tehkan World Cup - (c) Tehkan 1985


Ernesto Corvi
ernesto@imagina.com

Roberto Juan Fresca
robbiex@rocketmail.com

TODO:
- dip switches and input ports for Gridiron and Tee'd Off

NOTES:
- Samples MUST be on Memory Region 4

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

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


extern unsigned char *tehkanwc_videoram1;
extern int tehkanwc_videoram1_size;

/* from vidhrdw */
int tehkanwc_vh_start(void);
void tehkanwc_vh_stop(void);
void tehkanwc_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);
int tehkanwc_videoram1_r(int offset);
void tehkanwc_videoram1_w(int offset,int data);
int tehkanwc_scroll_x_r(int offset);
int tehkanwc_scroll_y_r(int offset);
void tehkanwc_scroll_x_w(int offset,int data);
void tehkanwc_scroll_y_w(int offset,int data);
void gridiron_led0_w(int offset,int data);
void gridiron_led1_w(int offset,int data);


static unsigned char *shared_ram;

static int shared_r(int offset)
{
	return shared_ram[offset];
}

static void shared_w(int offset,int data)
{
	shared_ram[offset] = data;
}


static void sub_cpu_halt_w(int offset,int data)
{
	if (data)
		cpu_set_reset_line(1,CLEAR_LINE);
	else
		cpu_set_reset_line(1,ASSERT_LINE);
}



static int track0[2],track1[2];

static int tehkanwc_track_0_r(int offset)
{
	int joy;

	joy = readinputport(10) >> (2*offset);
	if (joy & 1) return -63;
	if (joy & 2) return 63;
	return readinputport(3 + offset) - track0[offset];
}

static int tehkanwc_track_1_r(int offset)
{
	int joy;

	joy = readinputport(10) >> (4+2*offset);
	if (joy & 1) return -63;
	if (joy & 2) return 63;
	return readinputport(6 + offset) - track1[offset];
}

static void tehkanwc_track_0_reset_w(int offset,int data)
{
	/* reset the trackball counters */
	track0[offset] = readinputport(3 + offset) + data;
}

static void tehkanwc_track_1_reset_w(int offset,int data)
{
	/* reset the trackball counters */
	track1[offset] = readinputport(6 + offset) + data;
}



static void sound_command_w(int offset,int data)
{
	soundlatch_w(offset,data);
	cpu_cause_interrupt(2,Z80_NMI_INT);
}

static void reset_callback(int param)
{
	cpu_set_reset_line(2,PULSE_LINE);
}

static void sound_answer_w(int offset,int data)
{
	soundlatch2_w(0,data);

	/* in Gridiron, the sound CPU goes in a tight loop after the self test, */
	/* probably waiting to be reset by a watchdog */
	if (cpu_get_pc() == 0x08bc) timer_set(TIME_IN_SEC(1),0,reset_callback);
}


/* Emulate MSM sound samples with counters */

static int msm_data_offs;

static int tehkanwc_portA_r(int offset)
{
	return msm_data_offs & 0xff;
}

static int tehkanwc_portB_r( int offset )
{
	return (msm_data_offs >> 8) & 0xff;
}

static void tehkanwc_portA_w(int offset,int data)
{
	msm_data_offs = (msm_data_offs & 0xff00) | data;
}

static void tehkanwc_portB_w(int offset,int data)
{
	msm_data_offs = (msm_data_offs & 0x00ff) | (data << 8);
}

static void msm_reset_w(int offset,int data)
{
	MSM5205_reset_w(0,data ? 0 : 1);
}

void tehkanwc_adpcm_int (int data)
{
	static int toggle;

	unsigned char *SAMPLES = Machine->memory_region[4];
	int msm_data = SAMPLES[msm_data_offs & 0x7fff];

	if (toggle == 0)
		MSM5205_data_w(0,(msm_data >> 4) & 0x0f);
	else
	{
		MSM5205_data_w(0,msm_data & 0x0f);
		msm_data_offs++;
	}

	toggle ^= 1;
}

/* End of MSM with counters emulation */



static struct MemoryReadAddress readmem[] =
{
	{ 0x0000, 0xbfff, MRA_ROM },
	{ 0xc000, 0xc7ff, MRA_RAM },
	{ 0xc800, 0xcfff, shared_r },
	{ 0xd000, 0xd3ff, videoram_r },
	{ 0xd400, 0xd7ff, colorram_r },
	{ 0xd800, 0xddff, paletteram_r },
	{ 0xde00, 0xdfff, MRA_RAM },	/* unused part of the palette RAM, I think? Gridiron uses it */
	{ 0xe000, 0xe7ff, tehkanwc_videoram1_r },
	{ 0xe800, 0xebff, spriteram_r }, /* sprites */
	{ 0xec00, 0xec01, tehkanwc_scroll_x_r },
	{ 0xec02, 0xec02, tehkanwc_scroll_y_r },
	{ 0xf800, 0xf801, tehkanwc_track_0_r }, /* track 0 x/y */
	{ 0xf802, 0xf802, input_port_9_r }, /* Coin & Start */
	{ 0xf803, 0xf803, input_port_5_r }, /* joy0 - button */
	{ 0xf810, 0xf811, tehkanwc_track_1_r }, /* track 1 x/y */
	{ 0xf813, 0xf813, input_port_8_r }, /* joy1 - button */
	{ 0xf820, 0xf820, soundlatch2_r },	/* answer from the sound CPU */
	{ 0xf840, 0xf840, input_port_0_r }, /* DSW1 */
	{ 0xf850, 0xf850, input_port_1_r },	/* DSW2 */
	{ 0xf860, 0xf860, watchdog_reset_r },
	{ 0xf870, 0xf870, input_port_2_r }, /* DSW3 */
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0xbfff, MWA_ROM },
	{ 0xc000, 0xc7ff, MWA_RAM },
	{ 0xc800, 0xcfff, shared_w, &shared_ram },
	{ 0xd000, 0xd3ff, videoram_w, &videoram, &videoram_size },
	{ 0xd400, 0xd7ff, colorram_w, &colorram },
	{ 0xd800, 0xddff, paletteram_xxxxBBBBGGGGRRRR_swap_w, &paletteram },
	{ 0xde00, 0xdfff, MWA_RAM },	/* unused part of the palette RAM, I think? Gridiron uses it */
	{ 0xe000, 0xe7ff, tehkanwc_videoram1_w, &tehkanwc_videoram1, &tehkanwc_videoram1_size },
	{ 0xe800, 0xebff, spriteram_w, &spriteram, &spriteram_size }, /* sprites */
	{ 0xec00, 0xec01, tehkanwc_scroll_x_w },
	{ 0xec02, 0xec02, tehkanwc_scroll_y_w },
	{ 0xf800, 0xf801, tehkanwc_track_0_reset_w },
	{ 0xf802, 0xf802, gridiron_led0_w },
	{ 0xf810, 0xf811, tehkanwc_track_1_reset_w },
	{ 0xf812, 0xf812, gridiron_led1_w },
	{ 0xf820, 0xf820, sound_command_w },
	{ 0xf840, 0xf840, sub_cpu_halt_w },
	{ -1 }	/* end of table */
};

static struct MemoryReadAddress readmem_sub[] =
{
	{ 0x0000, 0x7fff, MRA_ROM },
	{ 0x8000, 0xc7ff, MRA_RAM },
	{ 0xc800, 0xcfff, shared_r },
	{ 0xd000, 0xd3ff, videoram_r },
	{ 0xd400, 0xd7ff, colorram_r },
	{ 0xd800, 0xddff, paletteram_r },
	{ 0xde00, 0xdfff, MRA_RAM },	/* unused part of the palette RAM, I think? Gridiron uses it */
	{ 0xe000, 0xe7ff, tehkanwc_videoram1_r },
	{ 0xe800, 0xebff, spriteram_r }, /* sprites */
	{ 0xec00, 0xec01, tehkanwc_scroll_x_r },
	{ 0xec02, 0xec02, tehkanwc_scroll_y_r },
	{ 0xf860, 0xf860, watchdog_reset_r },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem_sub[] =
{
	{ 0x0000, 0x7fff, MWA_ROM },
	{ 0xc000, 0xc7ff, MWA_RAM },
	{ 0xc800, 0xcfff, shared_w },
	{ 0xd000, 0xd3ff, videoram_w },
	{ 0xd400, 0xd7ff, colorram_w },
	{ 0xd800, 0xddff, paletteram_xxxxBBBBGGGGRRRR_swap_w, &paletteram },
	{ 0xde00, 0xdfff, MWA_RAM },	/* unused part of the palette RAM, I think? Gridiron uses it */
	{ 0xe000, 0xe7ff, tehkanwc_videoram1_w },
	{ 0xe800, 0xebff, spriteram_w }, /* sprites */
	{ 0xec00, 0xec01, tehkanwc_scroll_x_w },
	{ 0xec02, 0xec02, tehkanwc_scroll_y_w },
	{ -1 }	/* end of table */
};

static struct MemoryReadAddress readmem_sound[] =
{
	{ 0x0000, 0x3fff, MRA_ROM },
	{ 0x4000, 0x47ff, MRA_RAM },
	{ 0xc000, 0xc000, soundlatch_r },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem_sound[] =
{
	{ 0x0000, 0x3fff, MWA_ROM },
	{ 0x4000, 0x47ff, MWA_RAM },
	{ 0x8001, 0x8001, msm_reset_w },/* MSM51xx reset */
	{ 0x8002, 0x8002, MWA_NOP },	/* ?? written in the IRQ handler */
	{ 0x8003, 0x8003, MWA_NOP },	/* ?? written in the NMI handler */
	{ 0xc000, 0xc000, sound_answer_w },	/* answer for main CPU */
	{ -1 }	/* end of table */
};

static struct IOReadPort sound_readport[] =
{
	{ 0x00, 0x00, AY8910_read_port_0_r },
	{ 0x02, 0x02, AY8910_read_port_1_r },
	{ -1 }	/* end of table */
};

static struct IOWritePort sound_writeport[] =
{
	{ 0x00, 0x00, AY8910_write_port_0_w },
	{ 0x01, 0x01, AY8910_control_port_0_w },
	{ 0x02, 0x02, AY8910_write_port_1_w },
	{ 0x03, 0x03, AY8910_control_port_1_w },
	{ -1 }	/* end of table */
};



INPUT_PORTS_START( tehkanwc )
	PORT_START /* DSW1 - Active LOW */
	PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coin_A ) )
	PORT_DIPSETTING (   0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING (   0x07, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING (   0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING (   0x06, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING (   0x05, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING (   0x04, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING (   0x03, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING (   0x02, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x38, 0x38, DEF_STR( Coin_B ) )
	PORT_DIPSETTING (   0x08, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING (   0x38, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING (   0x00, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING (   0x30, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING (   0x28, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING (   0x20, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING (   0x18, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING (   0x10, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x40, 0x40, "Extra Time per Coin" )
	PORT_DIPSETTING (   0x40, "Normal" )
	PORT_DIPSETTING (   0x00, "Double" )
	PORT_DIPNAME( 0x80, 0x80, "1 Player Start" )
	PORT_DIPSETTING (   0x00, "2 Credits" )
	PORT_DIPSETTING (   0x80, "1 Credit" )

	PORT_START /* DSW2 - Active LOW */
	PORT_DIPNAME( 0x03, 0x03, "1P Game Time" )
	PORT_DIPSETTING (   0x00, "2:30" )
	PORT_DIPSETTING (   0x01, "2:00" )
	PORT_DIPSETTING (   0x03, "1:30" )
	PORT_DIPSETTING (   0x02, "1:00" )
	PORT_DIPNAME( 0x7c, 0x7c, "2P Game Time" )
	PORT_DIPSETTING (   0x00, "5:00/3:00 Extra" )
	PORT_DIPSETTING (   0x60, "5:00/2:45 Extra" )
	PORT_DIPSETTING (   0x20, "5:00/2:35 Extra" )
	PORT_DIPSETTING (   0x40, "5:00/2:30 Extra" )
	PORT_DIPSETTING (   0x04, "4:00/2:30 Extra" )
	PORT_DIPSETTING (   0x64, "4:00/2:15 Extra" )
	PORT_DIPSETTING (   0x24, "4:00/2:05 Extra" )
	PORT_DIPSETTING (   0x44, "4:00/2:00 Extra" )
	PORT_DIPSETTING (   0x1c, "3:30/2:15 Extra" )
	PORT_DIPSETTING (   0x7c, "3:30/2:00 Extra" )
	PORT_DIPSETTING (   0x3c, "3:30/1:50 Extra" )
	PORT_DIPSETTING (   0x5c, "3:30/1:45 Extra" )
	PORT_DIPSETTING (   0x08, "3:00/2:00 Extra" )
	PORT_DIPSETTING (   0x68, "3:00/1:45 Extra" )
	PORT_DIPSETTING (   0x28, "3:00/1:35 Extra" )
	PORT_DIPSETTING (   0x48, "3:00/1:30 Extra" )
	PORT_DIPSETTING (   0x0c, "2:30/1:45 Extra" )
	PORT_DIPSETTING (   0x6c, "2:30/1:30 Extra" )
	PORT_DIPSETTING (   0x2c, "2:30/1:20 Extra" )
	PORT_DIPSETTING (   0x4c, "2:30/1:15 Extra" )
	PORT_DIPSETTING (   0x10, "2:00/1:30 Extra" )
	PORT_DIPSETTING (   0x70, "2:00/1:15 Extra" )
	PORT_DIPSETTING (   0x30, "2:00/1:05 Extra" )
	PORT_DIPSETTING (   0x50, "2:00/1:00 Extra" )
	PORT_DIPSETTING (   0x14, "1:30/1:15 Extra" )
	PORT_DIPSETTING (   0x74, "1:30/1:00 Extra" )
	PORT_DIPSETTING (   0x34, "1:30/0:50 Extra" )
	PORT_DIPSETTING (   0x54, "1:30/0:45 Extra" )
	PORT_DIPSETTING (   0x18, "1:00/1:00 Extra" )
	PORT_DIPSETTING (   0x78, "1:00/0:45 Extra" )
	PORT_DIPSETTING (   0x38, "1:00/0:35 Extra" )
	PORT_DIPSETTING (   0x58, "1:00/0:30 Extra" )
	PORT_DIPNAME( 0x80, 0x80, "Game Type" )
	PORT_DIPSETTING (   0x80, "Timer In" )
	PORT_DIPSETTING (   0x00, "Credit In" )

	PORT_START /* DSW3 - Active LOW */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Difficulty ) )
	PORT_DIPSETTING (   0x02, "Easy" )
	PORT_DIPSETTING (   0x03, "Normal" )
	PORT_DIPSETTING (   0x01, "Hard" )
	PORT_DIPSETTING (   0x00, "Very Hard" )
	PORT_DIPNAME( 0x04, 0x04, "Timer Speed" )
	PORT_DIPSETTING (   0x04, "60/60" )
	PORT_DIPSETTING (   0x00, "55/60" )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING (   0x08, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )

	PORT_START /* IN0 - X AXIS */
	PORT_ANALOGX( 0xff, 0x80, IPT_TRACKBALL_X | IPF_PLAYER1, 100, 0, 63, 0, 0, IP_KEY_NONE, IP_KEY_NONE, IP_JOY_NONE, IP_JOY_NONE )

	PORT_START /* IN0 - Y AXIS */
	PORT_ANALOGX( 0xff, 0x80, IPT_TRACKBALL_Y | IPF_PLAYER1, 100, 0, 63, 0, 0, IP_KEY_NONE, IP_KEY_NONE, IP_JOY_NONE, IP_JOY_NONE )

	PORT_START /* IN0 - BUTTON */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )

	PORT_START /* IN1 - X AXIS */
	PORT_ANALOGX( 0xff, 0x80, IPT_TRACKBALL_X | IPF_PLAYER2, 100, 0, 63, 0, 0, IP_KEY_NONE, IP_KEY_NONE, IP_JOY_NONE, IP_JOY_NONE )

	PORT_START /* IN1 - Y AXIS */
	PORT_ANALOGX( 0xff, 0x80, IPT_TRACKBALL_Y | IPF_PLAYER2, 100, 0, 63, 0, 0, IP_KEY_NONE, IP_KEY_NONE, IP_JOY_NONE, IP_JOY_NONE )

	PORT_START /* IN1 - BUTTON */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )

	PORT_START /* IN2 - Active LOW */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START	/* fake port to emulate trackballs with keyboard */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT  | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN  | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP    | IPF_8WAY | IPF_PLAYER1 )
	PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT  | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN  | IPF_8WAY | IPF_PLAYER2 )
	PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP    | IPF_8WAY | IPF_PLAYER2 )
INPUT_PORTS_END


INPUT_PORTS_START( gridiron )
	PORT_START /* DSW1 - Active LOW */
	PORT_DIPNAME( 0x01, 0x01, "1 Player Start" )
	PORT_DIPSETTING (   0x00, "2 Credits" )
	PORT_DIPSETTING (   0x01, "1 Credit" )
	PORT_DIPNAME( 0x02, 0x02, "2 Players Start" )
	PORT_DIPSETTING (   0x02, "2 Credits" )
	PORT_DIPSETTING (   0x00, "1 Credit" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x04, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x08, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x10, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x20, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x40, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x80, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )

	PORT_START /* DSW2 - Active LOW */
	PORT_DIPNAME( 0x03, 0x03, "1P Game Time" )
	PORT_DIPSETTING (   0x00, "2:30" )
	PORT_DIPSETTING (   0x01, "2:00" )
	PORT_DIPSETTING (   0x03, "1:30" )
	PORT_DIPSETTING (   0x02, "1:00" )
	PORT_DIPNAME( 0x7c, 0x7c, "2P Game Time" )
	PORT_DIPSETTING (   0x60, "5:00/3:00 Extra" )
	PORT_DIPSETTING (   0x00, "5:00/2:45 Extra" )
	PORT_DIPSETTING (   0x20, "5:00/2:35 Extra" )
	PORT_DIPSETTING (   0x40, "5:00/2:30 Extra" )
	PORT_DIPSETTING (   0x64, "4:00/2:30 Extra" )
	PORT_DIPSETTING (   0x04, "4:00/2:15 Extra" )
	PORT_DIPSETTING (   0x24, "4:00/2:05 Extra" )
	PORT_DIPSETTING (   0x44, "4:00/2:00 Extra" )
	PORT_DIPSETTING (   0x68, "3:30/2:15 Extra" )
	PORT_DIPSETTING (   0x08, "3:30/2:00 Extra" )
	PORT_DIPSETTING (   0x28, "3:30/1:50 Extra" )
	PORT_DIPSETTING (   0x48, "3:30/1:45 Extra" )
	PORT_DIPSETTING (   0x6c, "3:00/2:00 Extra" )
	PORT_DIPSETTING (   0x0c, "3:00/1:45 Extra" )
	PORT_DIPSETTING (   0x2c, "3:00/1:35 Extra" )
	PORT_DIPSETTING (   0x4c, "3:00/1:30 Extra" )
	PORT_DIPSETTING (   0x7c, "2:30/1:45 Extra" )
	PORT_DIPSETTING (   0x1c, "2:30/1:30 Extra" )
	PORT_DIPSETTING (   0x3c, "2:30/1:20 Extra" )
	PORT_DIPSETTING (   0x5c, "2:30/1:15 Extra" )
	PORT_DIPSETTING (   0x70, "2:00/1:30 Extra" )
	PORT_DIPSETTING (   0x10, "2:00/1:15 Extra" )
	PORT_DIPSETTING (   0x30, "2:00/1:05 Extra" )
	PORT_DIPSETTING (   0x50, "2:00/1:00 Extra" )
	PORT_DIPSETTING (   0x74, "1:30/1:15 Extra" )
	PORT_DIPSETTING (   0x14, "1:30/1:00 Extra" )
	PORT_DIPSETTING (   0x34, "1:30/0:50 Extra" )
	PORT_DIPSETTING (   0x54, "1:30/0:45 Extra" )
	PORT_DIPSETTING (   0x78, "1:00/1:00 Extra" )
	PORT_DIPSETTING (   0x18, "1:00/0:45 Extra" )
	PORT_DIPSETTING (   0x38, "1:00/0:35 Extra" )
	PORT_DIPSETTING (   0x58, "1:00/0:30 Extra" )
	PORT_DIPNAME( 0x80, 0x80, "Game Type?" )
	PORT_DIPSETTING (   0x80, "Timer In" )
	PORT_DIPSETTING (   0x00, "Credit In" )

	PORT_START /* DSW3 - Active LOW */
	PORT_DIPNAME( 0x03, 0x03, "Difficulty?" )
	PORT_DIPSETTING (   0x02, "Easy" )
	PORT_DIPSETTING (   0x03, "Normal" )
	PORT_DIPSETTING (   0x01, "Hard" )
	PORT_DIPSETTING (   0x00, "Very Hard" )
	PORT_DIPNAME( 0x04, 0x04, "Timer Speed?" )
	PORT_DIPSETTING (   0x04, "60/60" )
	PORT_DIPSETTING (   0x00, "55/60" )
	PORT_DIPNAME( 0x08, 0x08, "Demo Sounds?" )
	PORT_DIPSETTING (   0x08, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )

	PORT_START /* IN0 - X AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_X | IPF_PLAYER1, 100, 63, 63, 0, 0 )

	PORT_START /* IN0 - Y AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_Y | IPF_PLAYER1, 100, 63, 63, 0, 0 )

	PORT_START /* IN0 - BUTTON */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )

	PORT_START /* IN1 - X AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_X | IPF_PLAYER2, 100, 63, 63, 0, 0 )

	PORT_START /* IN1 - Y AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_Y | IPF_PLAYER2, 100, 63, 63, 0, 0 )

	PORT_START /* IN1 - BUTTON */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )

	PORT_START /* IN2 - Active LOW */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START	/* no fake port here */
	PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END


INPUT_PORTS_START( teedoff )
	PORT_START /* DSW1 - Active LOW */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Coin_A ) )
	PORT_DIPSETTING (   0x02, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING (   0x03, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING (   0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING (   0x00, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0c, 0x0c, DEF_STR( Coin_B ) )
	PORT_DIPSETTING (   0x08, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING (   0x0c, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING (   0x04, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING (   0x00, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x10, 0x10, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x10, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x20, 0x20, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x20, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x40, 0x40, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x40, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )
	PORT_DIPNAME( 0x80, 0x80, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x80, DEF_STR( On ) )
	PORT_DIPSETTING (   0x00, DEF_STR( Off ) )

	PORT_START /* DSW2 - Active LOW */
	PORT_DIPNAME( 0xff, 0xff, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x00, DEF_STR( On ) )
	PORT_DIPSETTING (   0xff, DEF_STR( Off ) )

	PORT_START /* DSW3 - Active LOW */
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Unknown ) )
	PORT_DIPSETTING (   0x00, DEF_STR( On ) )
	PORT_DIPSETTING (   0x0f, DEF_STR( Off ) )

	PORT_START /* IN0 - X AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_X | IPF_PLAYER1, 100, 63, 63, 0, 0 )

	PORT_START /* IN0 - Y AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_Y | IPF_PLAYER1, 100, 63, 63, 0, 0 )

	PORT_START /* IN0 - BUTTON */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER1 )

	PORT_START /* IN1 - X AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_X | IPF_PLAYER2, 100, 63, 63, 0, 0 )

	PORT_START /* IN1 - Y AXIS */
	PORT_ANALOG( 0xff, 0x80, IPT_TRACKBALL_Y | IPF_PLAYER2, 100, 63, 63, 0, 0 )

	PORT_START /* IN1 - BUTTON */
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_PLAYER2 )

	PORT_START /* IN2 - Active LOW */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_START2 )

	PORT_START	/* no fake port here */
	PORT_BIT( 0xff, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END




static struct GfxLayout charlayout =
{
	8,8,	/* 8*8 characters */
	512,	/* 512 characters */
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },	/* the bitplanes are packed in one nibble */
	{ 1*4, 0*4, 3*4, 2*4, 5*4, 4*4, 7*4, 6*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8	/* every char takes 32 consecutive bytes */
};

static struct GfxLayout spritelayout =
{
	16,16,	/* 16*16 sprites */
	512,	/* 512 sprites */
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },	/* the bitplanes are packed in one nibble */
	{ 1*4, 0*4, 3*4, 2*4, 5*4, 4*4, 7*4, 6*4,
			8*32+1*4, 8*32+0*4, 8*32+3*4, 8*32+2*4, 8*32+5*4, 8*32+4*4, 8*32+7*4, 8*32+6*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32,
			16*32, 17*32, 18*32, 19*32, 20*32, 21*32, 22*32, 23*32 },
	128*8	/* every char takes 32 consecutive bytes */
};

static struct GfxLayout tilelayout =
{
	16,8,	/* 16*8 characters */
	1024,	/* 1024 characters */
	4,	/* 4 bits per pixel */
	{ 0, 1, 2, 3 },	/* the bitplanes are packed in one nibble */
	{ 1*4, 0*4, 3*4, 2*4, 5*4, 4*4, 7*4, 6*4,
		32*8+1*4, 32*8+0*4, 32*8+3*4, 32*8+2*4, 32*8+5*4, 32*8+4*4, 32*8+7*4, 32*8+6*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	64*8	/* every char takes 64 consecutive bytes */
};

static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x00000, &charlayout,     0, 16 }, /* Colors 0 - 255 */
	{ 1, 0x04000, &spritelayout, 256,  8 }, /* Colors 256 - 383 */
	{ 1, 0x14000, &tilelayout,   512, 16 }, /* Colors 512 - 767 */
	{ -1 } /* end of array */
};



static struct AY8910interface ay8910_interface =
{
	2,	/* 2 chips */
	1536000, 	/* ??? */
	{ 25, 25 },
	AY8910_DEFAULT_GAIN,
	{ 0, tehkanwc_portA_r },
	{ 0, tehkanwc_portB_r },
	{ tehkanwc_portA_w, 0 },
	{ tehkanwc_portB_w, 0 }
};

static struct MSM5205interface msm5205_interface =
{
	1,					/* 1 chip             */
	384000,				/* 384KHz             */
	{ tehkanwc_adpcm_int },/* interrupt function */
	{ MSM5205_S48_4B },	/* 8KHz               */
	{ 25 }
};

static struct MachineDriver machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			4608000,	/* 18.432000 / 4 */
			0,
			readmem,writemem,0,0,
			interrupt,1
		},
		{
			CPU_Z80,
			4608000,	/* 18.432000 / 4 */
			2,
			readmem_sub,writemem_sub,0,0,
			interrupt,1
		},
		{
			CPU_Z80,	/* communication is bidirectional, can't mark it as AUDIO_CPU */
			4608000,	/* 18.432000 / 4 */
			3,
			readmem_sound,writemem_sound,sound_readport,sound_writeport,
			interrupt,1
		}
	},
	60, DEFAULT_REAL_60HZ_VBLANK_DURATION,	/* frames per second, vblank duration */
	10,	/* 10 CPU slices per frame - seems enough to keep the CPUs in sync */
	0,

	/* video hardware */
	32*8, 32*8, { 0*8, 32*8-1, 2*8, 30*8-1 },
	gfxdecodeinfo,
	768, 768,
	0,

	VIDEO_TYPE_RASTER | VIDEO_MODIFIES_PALETTE,
	0,
	tehkanwc_vh_start,
	tehkanwc_vh_stop,
	tehkanwc_vh_screenrefresh,

	/* sound hardware */
	0,0,0,0,
	{
		{
			SOUND_AY8910,
			&ay8910_interface
		},
		{
			SOUND_MSM5205,
            &msm5205_interface
		}
	}
};



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

  Game driver(s)

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

ROM_START( tehkanwc )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "twc-1.bin",    0x0000, 0x4000, 0x34d6d5ff )
	ROM_LOAD( "twc-2.bin",    0x4000, 0x4000, 0x7017a221 )
	ROM_LOAD( "twc-3.bin",    0x8000, 0x4000, 0x8b662902 )

	ROM_REGION_DISPOSE(0x24000)	/* 64k for graphics (disposed after conversion) */
	ROM_LOAD( "twc-12.bin",   0x00000, 0x4000, 0xa9e274f8 )	/* fg tiles */
	ROM_LOAD( "twc-8.bin",    0x04000, 0x8000, 0x055a5264 )	/* sprites */
	ROM_LOAD( "twc-7.bin",    0x0c000, 0x8000, 0x59faebe7 )
	ROM_LOAD( "twc-11.bin",   0x14000, 0x8000, 0x669389fc )	/* bg tiles */
	ROM_LOAD( "twc-9.bin",    0x1c000, 0x8000, 0x347ef108 )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "twc-4.bin",    0x0000, 0x8000, 0x70a9f883 )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "twc-6.bin",    0x0000, 0x4000, 0xe3112be2 )

	ROM_REGION(0x8000)	/* 32k for adpcm sounds */
	ROM_LOAD( "twc-5.bin",    0x0000, 0x4000, 0x444b5544 )
ROM_END

ROM_START( gridiron )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "gfight1.bin",  0x0000, 0x4000, 0x51612741 )
	ROM_LOAD( "gfight2.bin",  0x4000, 0x4000, 0xa678db48 )
	ROM_LOAD( "gfight3.bin",  0x8000, 0x4000, 0x8c227c33 )

	ROM_REGION_DISPOSE(0x24000)	/* 64k for graphics (disposed after conversion) */
	ROM_LOAD( "gfight7.bin",  0x00000, 0x4000, 0x04390cca )	/* fg tiles */
	ROM_LOAD( "gfight8.bin",  0x04000, 0x4000, 0x5de6a70f )	/* sprites */
	ROM_LOAD( "gfight9.bin",  0x08000, 0x4000, 0xeac9dc16 )
	ROM_LOAD( "gfight10.bin", 0x0c000, 0x4000, 0x61d0690f )
	/* 10000-13fff empty */
	ROM_LOAD( "gfight11.bin", 0x14000, 0x4000, 0x80b09c03 )	/* bg tiles */
	ROM_LOAD( "gfight12.bin", 0x18000, 0x4000, 0x1b615eae )
	/* 1c000-23fff empty */

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "gfight4.bin",  0x0000, 0x4000, 0x8821415f )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "gfight5.bin",  0x0000, 0x4000, 0x92ca3c07 )

	ROM_REGION(0x8000)	/* 32k for adpcm sounds */
	ROM_LOAD( "gfight6.bin",  0x0000, 0x4000, 0xd05d463d )
ROM_END

ROM_START( teedoff )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "to-1.bin",     0x0000, 0x4000, 0xcc2aebc5 )
	ROM_LOAD( "to-2.bin",     0x4000, 0x4000, 0xf7c9f138 )
	ROM_LOAD( "to-3.bin",     0x8000, 0x4000, 0xa0f0a6da )

	ROM_REGION_DISPOSE(0x24000)	/* 64k for graphics (disposed after conversion) */
	ROM_LOAD( "to-12.bin",    0x00000, 0x4000, 0x4f44622c )	/* fg tiles */
	ROM_LOAD( "to-8.bin",     0x04000, 0x8000, 0x363bd1ba )	/* sprites */
	ROM_LOAD( "to-7.bin",     0x0c000, 0x8000, 0x6583fa5b )
	ROM_LOAD( "to-11.bin",    0x14000, 0x8000, 0x1ec00cb5 )	/* bg tiles */
	ROM_LOAD( "to-9.bin",     0x1c000, 0x8000, 0xa14347f0 )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "to-4.bin",     0x0000, 0x8000, 0xe922cbd2 )

	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "to-6.bin",     0x0000, 0x4000, 0xd8dfe1c8 )

	ROM_REGION(0x8000)	/* 32k for adpcm sounds */
	ROM_LOAD( "to-5.bin",     0x0000, 0x8000, 0xe5e4246b )
ROM_END


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


	/* check if the hi score table has already been initialized */
	if (RAM[0xc600] == 0x03)
	{
		void *f;


		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0xc600],8*12);
			osd_fclose(f);
		}

		return 1;
	}
	else return 0;  /* we can't load the hi scores yet */
}

static void tehkanwc_hisave(void)
{
	void *f;
	unsigned char *RAM = 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[0xc600],8*12);
		osd_fclose(f);
	}

}


struct GameDriver driver_tehkanwc =
{
	__FILE__,
	0,
	"tehkanwc",
	"Tehkan World Cup",
	"1985",
	"Tehkan",
	"Ernesto Corvi\nRoberto Fresca",
	0,
	&machine_driver,
	0,

	rom_tehkanwc,
	0, 0,
	0,
	0,

	input_ports_tehkanwc,

	0, 0, 0,
	ORIENTATION_DEFAULT,

	tehkanwc_hiload, tehkanwc_hisave
};

struct GameDriver driver_gridiron =
{
	__FILE__,
	0,
	"gridiron",
	"Gridiron Fight",
	"1985",
	"Tehkan",
	"Ernesto Corvi\nRoberto Fresca",
	0,
	&machine_driver,
	0,

	rom_gridiron,
	0, 0,
	0,
	0,

	input_ports_gridiron,

	0, 0, 0,
	ORIENTATION_DEFAULT,

	0, 0
};

struct GameDriver driver_teedoff =
{
	__FILE__,
	0,
	"teedoff",
	"Tee'd Off",
	"1986",
	"Tecmo",
	"Ernesto Corvi\nRoberto Fresca",
	0,
	&machine_driver,
	0,

	rom_teedoff,
	0, 0,
	0,
	0,

	input_ports_teedoff,

	0, 0, 0,
	ORIENTATION_ROTATE_90 | GAME_NOT_WORKING,

	0, 0
};
