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

Amidar memory map (preliminary)

0000-3fff ROM (Amidar US version and Turtles: 0000-4fff)
8000-87ff RAM
9000-93ff Video RAM
9800-983f Screen attributes
9840-985f sprites

read:
a800      watchdog reset
b000      IN0
b010      IN1
b020      IN2
b820      DSW (not Turtles)
see the input_ports definition below for details on the input bits

write:
a008      interrupt enable
a010/a018 flip screen X & Y (I don't know which is which)
a030      coin counter A
a038      coin counter B
b800      To AY-3-8910 port A (commands for the audio CPU)
b810      bit 3 = interrupt trigger on audio CPU


SOUND BOARD:
0000-1fff ROM
8000-83ff RAM

write:
9000      ?
9080      ?

I/0 ports:
read:
20      8910 #2  read
80      8910 #1  read

write
10      8910 #2  control
20      8910 #2  write
40      8910 #1  control
80      8910 #1  write

interrupts:
interrupt mode 1 triggered by the main CPU

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

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



extern unsigned char *amidar_attributesram;
void amidar_vh_convert_color_prom(unsigned char *palette, unsigned short *colortable,const unsigned char *color_prom);
void amidar_flipx_w(int offset,int data);
void amidar_flipy_w(int offset,int data);
void amidar_attributes_w(int offset,int data);
void amidar_vh_screenrefresh(struct osd_bitmap *bitmap,int full_refresh);

int scramble_portB_r(int offset);
void scramble_sh_irqtrigger_w(int offset,int data);

void amidar_coina_w (int offset, int data)
{
	coin_counter_w (0, data);
	coin_counter_w (0, 0);
}

void amidar_coinb_w (int offset, int data)
{
	coin_counter_w (1, data);
	coin_counter_w (1, 0);
}

static struct MemoryReadAddress amidar_readmem[] =
{
	{ 0x0000, 0x4fff, MRA_ROM },
	{ 0x8000, 0x87ff, MRA_RAM },
	{ 0x9000, 0x93ff, MRA_RAM },
	{ 0x9800, 0x985f, MRA_RAM },
	{ 0xa800, 0xa800, watchdog_reset_r },
	{ 0xb000, 0xb000, input_port_0_r },	/* IN0 */
	{ 0xb010, 0xb010, input_port_1_r },	/* IN1 */
	{ 0xb020, 0xb020, input_port_2_r },	/* IN2 */
	{ 0xb820, 0xb820, input_port_3_r },	/* DSW */
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress writemem[] =
{
	{ 0x0000, 0x4fff, MWA_ROM },
	{ 0x8000, 0x87ff, MWA_RAM },
	{ 0x9000, 0x93ff, videoram_w, &videoram, &videoram_size },
	{ 0x9800, 0x983f, amidar_attributes_w, &amidar_attributesram },
	{ 0x9840, 0x985f, MWA_RAM, &spriteram, &spriteram_size },
	{ 0x9860, 0x987f, MWA_NOP },
	{ 0xa008, 0xa008, interrupt_enable_w },
	{ 0xa010, 0xa010, amidar_flipx_w },
	{ 0xa018, 0xa018, amidar_flipy_w },
	{ 0xa030, 0xa030, amidar_coina_w },
	{ 0xa038, 0xa038, amidar_coinb_w },
	{ 0xb800, 0xb800, soundlatch_w },
	{ 0xb810, 0xb810, scramble_sh_irqtrigger_w },
	{ -1 }	/* end of table */
};



static struct MemoryReadAddress sound_readmem[] =
{
	{ 0x0000, 0x1fff, MRA_ROM },
	{ 0x8000, 0x83ff, MRA_RAM },
	{ -1 }	/* end of table */
};

static struct MemoryWriteAddress sound_writemem[] =
{
	{ 0x0000, 0x1fff, MWA_ROM },
	{ 0x8000, 0x83ff, MWA_RAM },
//	{ 0x9000, 0x9000, MWA_NOP },
//	{ 0x9080, 0x9080, MWA_NOP },
	{ -1 }	/* end of table */
};



static struct IOReadPort sound_readport[] =
{
	{ 0x80, 0x80, AY8910_read_port_0_r },
	{ 0x20, 0x20, AY8910_read_port_1_r },
	{ -1 }	/* end of table */
};

static struct IOWritePort sound_writeport[] =
{
	{ 0x40, 0x40, AY8910_control_port_0_w },
	{ 0x80, 0x80, AY8910_write_port_0_w },
	{ 0x10, 0x10, AY8910_control_port_1_w },
	{ 0x20, 0x20, AY8910_write_port_1_w },
	{ -1 }	/* end of table */
};



INPUT_PORTS_START( amidar )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for button 2 */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* IN1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "3" )
	PORT_DIPSETTING(    0x02, "4" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_BITX (0,       0x00, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "255", IP_KEY_NONE, IP_JOY_NONE )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for player 2 button 2 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "30000 70000" )
	PORT_DIPSETTING(    0x04, "50000 80000" )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Cocktail ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START	/* DSW */
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x0a, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0x0f, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0x0e, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0x0b, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x0d, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x05, 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(    0x40, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x70, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x50, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x90, DEF_STR( 1C_7C ) )
	PORT_DIPSETTING(    0x00, "Disable All Coins" )
INPUT_PORTS_END

INPUT_PORTS_START( amidaro )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for button 2 */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* IN1 */
	PORT_DIPNAME( 0x03, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "1" )
	PORT_DIPSETTING(    0x02, "2" )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for player 2 button 2 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_DIPNAME( 0x02, 0x00, "Level Progression" )
	PORT_DIPSETTING(    0x00, "Slow" )
	PORT_DIPSETTING(    0x02, "Fast" )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "30000 70000" )
	PORT_DIPSETTING(    0x04, "50000 80000" )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Cocktail ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START	/* DSW */
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x0a, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0x0f, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0x0e, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0x0b, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x0d, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x05, 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(    0x40, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x70, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x50, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x90, DEF_STR( 1C_7C ) )
	PORT_DIPSETTING(    0x00, "Disable All Coins" )
INPUT_PORTS_END

/* absolutely identical to amidar, the only difference is the BONUS dip switch */
INPUT_PORTS_START( amidarjp )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for button 2 */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* IN1 */
	PORT_DIPNAME( 0x03, 0x03, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "3" )
	PORT_DIPSETTING(    0x02, "4" )
	PORT_DIPSETTING(    0x01, "5" )
	PORT_BITX (0,       0x00, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "255", IP_KEY_NONE, IP_JOY_NONE )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for player 2 button 2 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "30000 50000" )
	PORT_DIPSETTING(    0x04, "50000 50000" )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Cocktail ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START	/* DSW */
	PORT_DIPNAME( 0x0f, 0x0f, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x0a, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0x0f, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0x0e, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0x0b, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x0d, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x05, 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(    0x40, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x10, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_2C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 4C_3C ) )
	PORT_DIPSETTING(    0xf0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 3C_4C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x70, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_5C ) )
	PORT_DIPSETTING(    0xb0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x30, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0xd0, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x50, DEF_STR( 1C_6C ) )
	PORT_DIPSETTING(    0x90, DEF_STR( 1C_7C ) )
	PORT_DIPSETTING(    0x00, "Disable All Coins" )
INPUT_PORTS_END

/* similar to Amidar, dip switches are different and port 3, which in Amidar */
/* selects coins per credit, is not used. */
INPUT_PORTS_START( turtles )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for button 2 */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* IN1 */
	PORT_DIPNAME( 0x03, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "2" )
	PORT_DIPSETTING(    0x01, "3" )
	PORT_DIPSETTING(    0x02, "4" )
	PORT_BITX (0,       0x03, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "126", IP_KEY_NONE, IP_JOY_NONE )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for player 2 button 2 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL )
	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, "A 1/1 B 2/1 C 1/1" )
	PORT_DIPSETTING(    0x02, "A 1/2 B 1/1 C 1/2" )
	PORT_DIPSETTING(    0x04, "A 1/3 B 3/1 C 1/3" )
	PORT_DIPSETTING(    0x06, "A 1/4 B 4/1 C 1/4" )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Cocktail ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END

/* same as Turtles, but dip switches are different. */
INPUT_PORTS_START( turpin )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for button 2 */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* IN1 */
	PORT_DIPNAME( 0x03, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "2" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "6" )
	PORT_BITX (0,       0x03, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "126", IP_KEY_NONE, IP_JOY_NONE )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for player 2 button 2 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_4WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY | IPF_COCKTAIL )
	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Cocktail ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_4WAY )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_4WAY )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END

/* similar to Turtles, lives are different */
INPUT_PORTS_START( 600 )
	PORT_START	/* IN0 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for button 2 */
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_COIN3 )
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_COIN2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 )

	PORT_START	/* IN1 */
	PORT_DIPNAME( 0x03, 0x01, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_BITX (0,       0x03, IPT_DIPSWITCH_SETTING | IPF_CHEAT, "126", IP_KEY_NONE, IP_JOY_NONE )
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNKNOWN )	/* probably space for player 2 button 2 */
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 | IPF_COCKTAIL )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT | IPF_8WAY | IPF_COCKTAIL )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_START1 )

	PORT_START	/* IN2 */
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY | IPF_COCKTAIL )
	PORT_DIPNAME( 0x06, 0x00, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, "A 1/1 B 2/1 C 1/1" )
	PORT_DIPSETTING(    0x02, "A 1/2 B 1/1 C 1/2" )
	PORT_DIPSETTING(    0x04, "A 1/3 B 3/1 C 1/3" )
	PORT_DIPSETTING(    0x06, "A 1/4 B 4/1 C 1/4" )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Cocktail ) )
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_UP | IPF_8WAY )
	PORT_DIPNAME( 0x20, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN | IPF_8WAY )
	PORT_DIPNAME( 0x80, 0x00, DEF_STR( Unknown ) )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
INPUT_PORTS_END



static struct GfxLayout charlayout =
{
	8,8,	/* 8*8 characters */
	256,	/* 256 characters */
	2,	/* 2 bits per pixel */
	{ 0, 256*8*8 },	/* the two bitplanes are separated */
	{ 0, 1, 2, 3, 4, 5, 6, 7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8 },
	8*8	/* every char takes 8 consecutive bytes */
};
static struct GfxLayout spritelayout =
{
	16,16,	/* 16*16 sprites */
	64,	/* 64 sprites */
	2,	/* 2 bits per pixel */
	{ 0, 64*16*16 },	/* the two bitplanes are separated */
	{ 0, 1, 2, 3, 4, 5, 6, 7,
			8*8+0, 8*8+1, 8*8+2, 8*8+3, 8*8+4, 8*8+5, 8*8+6, 8*8+7 },
	{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
			16*8, 17*8, 18*8, 19*8, 20*8, 21*8, 22*8, 23*8 },
	32*8	/* every sprite takes 32 consecutive bytes */
};

static struct GfxDecodeInfo gfxdecodeinfo[] =
{
	{ 1, 0x0000, &charlayout,     0, 8 },
	{ 1, 0x0000, &spritelayout,   0, 8 },
	{ -1 } /* end of array */
};



static struct AY8910interface ay8910_interface =
{
	2,	/* 2 chips */
	14318000/8,	/* 1.78975 Mhz */
	{ 30, 30 },
	{ 0x30, 0x30 },		/* gain */
	{ soundlatch_r },
	{ scramble_portB_r },
	{ 0 },
	{ 0 }
};



static struct MachineDriver machine_driver =
{
	/* basic machine hardware */
	{
		{
			CPU_Z80,
			18432000/6,	/* 3.072 Mhz */
			0,
			amidar_readmem,writemem,0,0,
			nmi_interrupt,1
		},
		{
			CPU_Z80 | CPU_AUDIO_CPU,
			14318000/8,	/* 1.78975 Mhz */
			3,	/* memory region #3 */
			sound_readmem,sound_writemem,sound_readport,sound_writeport,
			ignore_interrupt,1	/* interrupts are triggered by the main CPU */
		}
	},
	60, 2500,	/* frames per second, vblank duration */
	1,	/* 1 CPU slice per frame - interleaving is forced when a sound command is written */
	0,

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

	VIDEO_TYPE_RASTER|VIDEO_SUPPORTS_DIRTY,
	0,
	generic_vh_start,
	generic_vh_stop,
	amidar_vh_screenrefresh,

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



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

  Game driver(s)

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

ROM_START( amidar )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "amidarus.2c",  0x0000, 0x1000, 0x951e0792 )
	ROM_LOAD( "amidarus.2e",  0x1000, 0x1000, 0xa1a3a136 )
	ROM_LOAD( "amidarus.2f",  0x2000, 0x1000, 0xa5121bf5 )
	ROM_LOAD( "amidarus.2h",  0x3000, 0x1000, 0x051d1c7f )
	ROM_LOAD( "amidarus.2j",  0x4000, 0x1000, 0x351f00d5 )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "amidarus.5f",  0x0000, 0x0800, 0x2cfe5ede )
	ROM_LOAD( "amidarus.5h",  0x0800, 0x0800, 0x57c4fd0d )

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "amidar.clr",   0x0000, 0x0020, 0xf940dcc3 )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "amidarus.5c",  0x0000, 0x1000, 0x8ca7b750 )
	ROM_LOAD( "amidarus.5d",  0x1000, 0x1000, 0x9b5bdc0a )
ROM_END

ROM_START( amidaro )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "107.2cd",      0x0000, 0x1000, 0xc52536be )
	ROM_LOAD( "108.2fg",      0x1000, 0x1000, 0x38538b98 )
	ROM_LOAD( "109.2fg",      0x2000, 0x1000, 0x69907f0f )
	ROM_LOAD( "110.2h",       0x3000, 0x1000, 0xba149a93 )
	ROM_LOAD( "111.2j",       0x4000, 0x1000, 0x20d01c2e )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "amidarus.5f",  0x0000, 0x0800, 0x2cfe5ede )
	ROM_LOAD( "113.5h",       0x0800, 0x0800, 0xbcdce168 )  /* The letter 'S' is slightly different */

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "amidar.clr",   0x0000, 0x0020, 0xf940dcc3 )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "amidarus.5c",  0x0000, 0x1000, 0x8ca7b750 )
	ROM_LOAD( "amidarus.5d",  0x1000, 0x1000, 0x9b5bdc0a )
ROM_END

ROM_START( amidarjp )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "amidar.2c",    0x0000, 0x1000, 0xc294bf27 )
	ROM_LOAD( "amidar.2e",    0x1000, 0x1000, 0xe6e96826 )
	ROM_LOAD( "amidar.2f",    0x2000, 0x1000, 0x3656be6f )
	ROM_LOAD( "amidar.2h",    0x3000, 0x1000, 0x1be170bd )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "amidar.5f",    0x0000, 0x0800, 0x5e51e84d )
	ROM_LOAD( "amidar.5h",    0x0800, 0x0800, 0x2f7f1c30 )

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "amidar.clr",   0x0000, 0x0020, 0xf940dcc3 )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "amidar.5c",    0x0000, 0x1000, 0xc4b66ae4 )
	ROM_LOAD( "amidar.5d",    0x1000, 0x1000, 0x806785af )
ROM_END

ROM_START( amigo )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "2732.a1",      0x0000, 0x1000, 0x930dc856 )
	ROM_LOAD( "2732.a2",      0x1000, 0x1000, 0x66282ff5 )
	ROM_LOAD( "2732.a3",      0x2000, 0x1000, 0xe9d3dc76 )
	ROM_LOAD( "2732.a4",      0x3000, 0x1000, 0x4a4086c9 )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "2716.a6",      0x0000, 0x0800, 0x2082ad0a )
	ROM_LOAD( "2716.a5",      0x0800, 0x0800, 0x3029f94f )

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "amidar.clr",   0x0000, 0x0020, 0xf940dcc3 )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "amidarus.5c",  0x0000, 0x1000, 0x8ca7b750 )
	ROM_LOAD( "amidarus.5d",  0x1000, 0x1000, 0x9b5bdc0a )
ROM_END

ROM_START( turtles )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "turt_vid.2c",  0x0000, 0x1000, 0xec5e61fb )
	ROM_LOAD( "turt_vid.2e",  0x1000, 0x1000, 0xfd10821e )
	ROM_LOAD( "turt_vid.2f",  0x2000, 0x1000, 0xddcfc5fa )
	ROM_LOAD( "turt_vid.2h",  0x3000, 0x1000, 0x9e71696c )
	ROM_LOAD( "turt_vid.2j",  0x4000, 0x1000, 0xfcd49fef )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "turt_vid.5h",  0x0000, 0x0800, 0xe5999d52 )
	ROM_LOAD( "turt_vid.5f",  0x0800, 0x0800, 0xc3ffd655 )

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "turtles.clr",  0x0000, 0x0020, 0xf3ef02dd )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "turt_snd.5c",  0x0000, 0x1000, 0xf0c30f9a )
	ROM_LOAD( "turt_snd.5d",  0x1000, 0x1000, 0xaf5fc43c )
ROM_END

ROM_START( turpin )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "m1",           0x0000, 0x1000, 0x89177473 )
	ROM_LOAD( "m2",           0x1000, 0x1000, 0x4c6ca5c6 )
	ROM_LOAD( "m3",           0x2000, 0x1000, 0x62291652 )
	ROM_LOAD( "turt_vid.2h",  0x3000, 0x1000, 0x9e71696c )
	ROM_LOAD( "m5",           0x4000, 0x1000, 0x7d2600f2 )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "turt_vid.5h",  0x0000, 0x0800, 0xe5999d52 )
	ROM_LOAD( "turt_vid.5f",  0x0800, 0x0800, 0xc3ffd655 )

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "turtles.clr",  0x0000, 0x0020, 0xf3ef02dd )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "turt_snd.5c",  0x0000, 0x1000, 0xf0c30f9a )
	ROM_LOAD( "turt_snd.5d",  0x1000, 0x1000, 0xaf5fc43c )
ROM_END

ROM_START( 600 )
	ROM_REGION(0x10000)	/* 64k for code */
	ROM_LOAD( "600_vid.2c",   0x0000, 0x1000, 0x8ee090ae )
	ROM_LOAD( "600_vid.2e",   0x1000, 0x1000, 0x45bfaff2 )
	ROM_LOAD( "600_vid.2f",   0x2000, 0x1000, 0x9f4c8ed7 )
	ROM_LOAD( "600_vid.2h",   0x3000, 0x1000, 0xa92ef056 )
	ROM_LOAD( "600_vid.2j",   0x4000, 0x1000, 0x6dadd72d )

	ROM_REGION_DISPOSE(0x1000)	/* temporary space for graphics (disposed after conversion) */
	ROM_LOAD( "600_vid.5h",   0x0000, 0x0800, 0x006c3d56 )
	ROM_LOAD( "600_vid.5f",   0x0800, 0x0800, 0x7dbc0426 )

	ROM_REGIONX( 0x0020, REGION_PROMS )
	ROM_LOAD( "turtles.clr",  0x0000, 0x0020, 0xf3ef02dd )

	ROM_REGION(0x10000)	/* 64k for the audio CPU */
	ROM_LOAD( "600_snd.5c",   0x0000, 0x1000, 0x1773c68e )
	ROM_LOAD( "600_snd.5d",   0x1000, 0x1000, 0xa311b998 )
ROM_END



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


	/* check if the hi score table has already been initialized */
	if (memcmp(&RAM[0x8200],"\x00\x00\x01",3) == 0 &&
			memcmp(&RAM[0x821b],"\x00\x00\x01",3) == 0)
	{
		void *f;


		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x8200],3*10);
			RAM[0x80a8] = RAM[0x8200];
			RAM[0x80a9] = RAM[0x8201];
			RAM[0x80aa] = RAM[0x8202];
			osd_fclose(f);
		}

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



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


	/* same as Amidar, but the high score table is initialized with zeros */
	/* a working quick-and-dirty solution is to update the top high score */
	/* and the whole table at different times */
	/* further study of the game code may provide a cleaner solution */

	static int first_pass = 0;
	static unsigned char top_score[] = { 0, 0, 0 };

	if (first_pass == 0)
	{
		void *f;

			if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
			{
				osd_fread(f,top_score,3);
				osd_fclose(f);
			}
		first_pass = 1;
	}

	if ((memcmp(&RAM[0x80A0],"\xc0\xc0\x00",3) == 0))
	{
		RAM[0x80a8] = top_score[0];
		RAM[0x80a9] = top_score[1];
		RAM[0x80aa] = top_score[2];
		return 0;
	} /* continuously updating top high score - really dirty solution */

	else if (memcmp(&RAM[0x80A0],"\xc6\xc6\x00",3) == 0)
	{
		void *f;


		if ((f = osd_fopen(Machine->gamedrv->name,0,OSD_FILETYPE_HIGHSCORE,0)) != 0)
		{
			osd_fread(f,&RAM[0x8200],3*10);
			osd_fclose(f);
		}

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



static void amidar_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[0x8200],3*10);
		osd_fclose(f);
	}
}



struct GameDriver driver_amidar =
{
	__FILE__,
	0,
	"amidar",
	"Amidar",
	"1981",
	"Konami",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_amidarjp,
	0, 0,
	0,
	0,

	input_ports_amidarjp,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	amidar_hiload, amidar_hisave
};

struct GameDriver driver_amidaru =
{
	__FILE__,
	&driver_amidar,
	"amidaru",
	"Amidar (Stern)",
	"1982",
	"Konami (Stern license)",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_amidar,
	0, 0,
	0,
	0,

	input_ports_amidar,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	amidar_hiload, amidar_hisave
};

struct GameDriver driver_amidaro =
{
	__FILE__,
	&driver_amidar,
	"amidaro",
	"Amidar (Olympia)",
	"1982",
	"Konami (Olympia license)",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_amidaro,
	0, 0,
	0,
	0,

	input_ports_amidaro,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	amidar_hiload, amidar_hisave
};

struct GameDriver driver_amigo =
{
	__FILE__,
	&driver_amidar,
	"amigo",
	"Amigo",
	"1982",
	"bootleg",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_amigo,
	0, 0,
	0,
	0,

	input_ports_amidar,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	amidar_hiload, amidar_hisave
};

struct GameDriver driver_turtles =
{
	__FILE__,
	0,
	"turtles",
	"Turtles",
	"1981",
	"[Konami] (Stern license)",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_turtles,
	0, 0,
	0,
	0,

	input_ports_turtles,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	turtles_hiload, amidar_hisave
};

struct GameDriver driver_turpin =
{
	__FILE__,
	&driver_turtles,
	"turpin",
	"Turpin",
	"1981",
	"[Konami] (Sega license)",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_turpin,
	0, 0,
	0,
	0,

	input_ports_turpin,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	turtles_hiload, amidar_hisave
};

struct GameDriver driver_600 =
{
	__FILE__,
	&driver_turtles,
	"600",
	"600",
	"1981",
	"Konami",
	"Robert Anschuetz (Arcade emulator)\nNicola Salmoria (MAME driver)\nAlan J. McCormick (color info)",
	0,
	&machine_driver,
	0,

	rom_600,
	0, 0,
	0,
	0,

	input_ports_600,

	0, 0, 0,
	ORIENTATION_ROTATE_90,

	turtles_hiload, amidar_hisave
};
