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

                          -= Yun Sung 8 Bit Games =-

                    driver by   Luca Elia (l.elia@tin.it)


Main  CPU    :  Z80B
Sound CPU    :  Z80A
Video Chips  :  ?
Sound Chips  :  OKI M5205 + YM3812

---------------------------------------------------------------------------
Year + Game         Board#
---------------------------------------------------------------------------
95  Cannon Ball      YS-ROCK-970712 or 940712?
95  Magix / Rock     YS-ROCK-970712 or 940712?
94? Rock Tris        YS-ROCK-940712
---------------------------------------------------------------------------

Notes:

- "Magix" can change title to "Rock" through a DSW
- In service mode press Service Coin (e.g. '9')

To Do:

- Better Sound

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

#include "driver.h"
#include "cpu/z80/z80.h"
#include "sound/3812intf.h"
#include "sound/msm5205.h"

/* Variables defined in video: */

extern UINT8 *yunsung8_videoram_0, *yunsung8_videoram_1;
extern int yunsung8_layers_ctrl;

/* Functions defined in video: */

WRITE8_HANDLER( yunsung8_videobank_w );

READ8_HANDLER ( yunsung8_videoram_r );
WRITE8_HANDLER( yunsung8_videoram_w );

WRITE8_HANDLER( yunsung8_flipscreen_w );

VIDEO_START( yunsung8 );
VIDEO_UPDATE( yunsung8 );



MACHINE_RESET( yunsung8 )
{
	UINT8 *RAM = memory_region(REGION_CPU1) + 0x24000;

	yunsung8_videoram_0 = RAM + 0x0000;	// Ram is banked
	yunsung8_videoram_1 = RAM + 0x2000;
	yunsung8_videobank_w(0,0);
}


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


                            Memory Maps - Main CPU


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


WRITE8_HANDLER( yunsung8_bankswitch_w )
{
	UINT8 *RAM = memory_region(REGION_CPU1);

	int bank			=	data & 7;		// ROM bank
	yunsung8_layers_ctrl	=	data & 0x30;	// Layers enable

	if (data & ~0x37)	logerror("CPU #0 - PC %04X: Bank %02X\n",activecpu_get_pc(),data);

	if (bank < 3)	RAM = &RAM[0x4000 * bank];
	else			RAM = &RAM[0x4000 * (bank-3) + 0x10000];

	memory_set_bankptr(1, RAM);
}

/*
    Banked Video RAM:

    c000-c7ff   Palette (bit 1 of port 0 switches between 2 banks)

    c800-cfff   Color   (bit 0 of port 0 switches between 2 banks)
    d000-dfff   Tiles   ""
*/

static ADDRESS_MAP_START( yunsung8_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM				)	// ROM
	AM_RANGE(0x8000, 0xbfff) AM_READ(MRA8_BANK1				)	// Banked ROM
	AM_RANGE(0xc000, 0xdfff) AM_READ(yunsung8_videoram_r	)	// Video RAM (Banked)
	AM_RANGE(0xe000, 0xffff) AM_READ(MRA8_RAM				)	// RAM
ADDRESS_MAP_END

static ADDRESS_MAP_START( yunsung8_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x0000) AM_WRITE(MWA8_ROM				)	// ROM
	AM_RANGE(0x0001, 0x0001) AM_WRITE(yunsung8_bankswitch_w	)	// ROM Bank (again?)
	AM_RANGE(0x0002, 0xbfff) AM_WRITE(MWA8_ROM				)	// ROM
	AM_RANGE(0xc000, 0xdfff) AM_WRITE(yunsung8_videoram_w	)	// Video RAM (Banked)
	AM_RANGE(0xe000, 0xffff) AM_WRITE(MWA8_RAM				)	// RAM
ADDRESS_MAP_END


static ADDRESS_MAP_START( yunsung8_readport, ADDRESS_SPACE_IO, 8 )
	ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
	AM_RANGE(0x00, 0x00) AM_READ(input_port_0_r		)	// Coins
	AM_RANGE(0x01, 0x01) AM_READ(input_port_1_r		)	// P1
	AM_RANGE(0x02, 0x02) AM_READ(input_port_2_r		)	// P2
	AM_RANGE(0x03, 0x03) AM_READ(input_port_3_r		)	// DSW 1
	AM_RANGE(0x04, 0x04) AM_READ(input_port_4_r		)	// DSW 2
ADDRESS_MAP_END

static ADDRESS_MAP_START( yunsung8_writeport, ADDRESS_SPACE_IO, 8 )
	ADDRESS_MAP_FLAGS( AMEF_ABITS(8) )
	AM_RANGE(0x00, 0x00) AM_WRITE(yunsung8_videobank_w	)	// Video RAM Bank
	AM_RANGE(0x01, 0x01) AM_WRITE(yunsung8_bankswitch_w	)	// ROM Bank + Layers Enable
	AM_RANGE(0x02, 0x02) AM_WRITE(soundlatch_w			)	// To Sound CPU
	AM_RANGE(0x06, 0x06) AM_WRITE(yunsung8_flipscreen_w	)	// Flip Screen
	AM_RANGE(0x07, 0x07) AM_WRITE(MWA8_NOP				)	// ? (end of IRQ, random value)
ADDRESS_MAP_END



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


                            Memory Maps - Sound CPU


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


static int adpcm;

WRITE8_HANDLER( yunsung8_sound_bankswitch_w )
{
	UINT8 *RAM = memory_region(REGION_CPU2);
	int bank = data & 7;

	if ( bank != (data&(~0x20)) ) 	logerror("CPU #1 - PC %04X: Bank %02X\n",activecpu_get_pc(),data);

	if (bank < 3)	RAM = &RAM[0x4000 * bank];
	else			RAM = &RAM[0x4000 * (bank-3) + 0x10000];

	memory_set_bankptr(2, RAM);

	MSM5205_reset_w(0,data & 0x20);
}

WRITE8_HANDLER( yunsung8_adpcm_w )
{
	/* Swap the nibbles */
	adpcm = ((data&0xf)<<4) | ((data >>4)&0xf);
}



static ADDRESS_MAP_START( yunsung8_sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_READ(MRA8_ROM						)	// ROM
	AM_RANGE(0x8000, 0xbfff) AM_READ(MRA8_BANK2						)	// Banked ROM
	AM_RANGE(0xf000, 0xf7ff) AM_READ(MRA8_RAM						)	// RAM
	AM_RANGE(0xf800, 0xf800) AM_READ(soundlatch_r					)	// From Main CPU
ADDRESS_MAP_END

static ADDRESS_MAP_START( yunsung8_sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_WRITE(MWA8_ROM						)	// ROM
	AM_RANGE(0x8000, 0xbfff) AM_WRITE(MWA8_ROM						)	// Banked ROM
	AM_RANGE(0xe000, 0xe000) AM_WRITE(yunsung8_sound_bankswitch_w	)	// ROM Bank
	AM_RANGE(0xe400, 0xe400) AM_WRITE(yunsung8_adpcm_w				)
	AM_RANGE(0xec00, 0xec00) AM_WRITE(YM3812_control_port_0_w		)	// YM3812
	AM_RANGE(0xec01, 0xec01) AM_WRITE(YM3812_write_port_0_w			)
	AM_RANGE(0xf000, 0xf7ff) AM_WRITE(MWA8_RAM						)	// RAM
ADDRESS_MAP_END




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


                                Input Ports


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

/***************************************************************************
                                    Magix
***************************************************************************/

INPUT_PORTS_START( magix )

	PORT_START	// IN0 - Coins
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_START2   )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_START1   )
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_COIN1    )

	PORT_START	// IN1 - Player 1
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)

	PORT_START	// IN2 - Player 2
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)

	PORT_START	// IN3 - DSW 1
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x06, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_4C ) )

	PORT_START	// IN4 - DSW 2
	PORT_DIPNAME( 0x01, 0x01, "Title" )
	PORT_DIPSETTING(    0x01, "Magix" )
	PORT_DIPSETTING(    0x00, "Rock" )
	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )	// the rest seems unused
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Unknown 2-2" )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, "Unknown 2-3" )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Unknown 2-4" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Unknown 2-5" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Unknown 2-6" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Unknown 2-7" )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

INPUT_PORTS_END


/***************************************************************************
                                Cannon Ball
***************************************************************************/

INPUT_PORTS_START( cannball )

	PORT_START	// IN0 - Coins
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_START2   )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_START1   )
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_SERVICE1 )
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_COIN1    )

	PORT_START	// IN1 - Player 1
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1)
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)

	PORT_START	// IN2 - Player 2
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)

	PORT_START	// IN3 - DSW 1
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x06, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_4C ) )

	PORT_START	// IN4 - DSW 2
	PORT_DIPNAME( 0x01, 0x01, "Unknown 2-0" )
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x0c, 0x0c, "Bombs" )
	PORT_DIPSETTING(    0x04, "1" )
	PORT_DIPSETTING(    0x08, "2" )
	PORT_DIPSETTING(    0x0c, "3" )
	PORT_DIPSETTING(    0x00, "4" )
	PORT_DIPNAME( 0x10, 0x10, "Unknown 2-4" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Unknown 2-5" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Unknown 2-6" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Unknown 2-7" )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

INPUT_PORTS_END

/***************************************************************************
                                    Rock Tris
***************************************************************************/

INPUT_PORTS_START( rocktris )

	PORT_START	// IN0 - Coins
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_START2   )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_START1   )
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_SERVICE1 ) PORT_IMPULSE(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_COIN1    ) PORT_IMPULSE(1)

	PORT_START	// IN1 - Player 1
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(1)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(1)

	PORT_START	// IN2 - Player 2
	PORT_BIT(  0x01, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x02, IP_ACTIVE_LOW, IPT_UNKNOWN  )
	PORT_BIT(  0x04, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2)	// same as button1 !?
	PORT_BIT(  0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT(  0x10, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2)
	PORT_BIT(  0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2)
	PORT_BIT(  0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2)
	PORT_BIT(  0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2)

	PORT_START	// IN3 - DSW 1
	PORT_SERVICE( 0x01, IP_ACTIVE_LOW )
	PORT_DIPNAME( 0x06, 0x06, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x06, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Flip_Screen ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0xe0, 0xe0, DEF_STR( Coinage ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 4C_1C ) )
	PORT_DIPSETTING(    0x20, DEF_STR( 3C_1C ) )
	PORT_DIPSETTING(    0x60, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0xe0, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x40, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0xc0, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0xa0, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x80, DEF_STR( 1C_4C ) )

	PORT_START	// IN4 - DSW 2
	PORT_DIPNAME( 0x01, 0x01, "Unknown 2-0" ) 	// the rest seems unused
	PORT_DIPSETTING(    0x01, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x02, 0x02, "Unknown 2-1" )
	PORT_DIPSETTING(    0x02, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x04, 0x04, "Unknown 2-2" )
	PORT_DIPSETTING(    0x04, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, "Unknown 2-3" )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x10, 0x10, "Unknown 2-4" )
	PORT_DIPSETTING(    0x10, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x20, 0x20, "Unknown 2-5" )
	PORT_DIPSETTING(    0x20, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x40, 0x40, "Unknown 2-6" )
	PORT_DIPSETTING(    0x40, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )
	PORT_DIPNAME( 0x80, 0x80, "Unknown 2-7" )
	PORT_DIPSETTING(    0x80, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

INPUT_PORTS_END

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


                                Graphics Layouts


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

/* 8x8x4 tiles in 2 roms */
static const gfx_layout layout_8x8x4 =
{
	8,8,
	RGN_FRAC(1,2),
	4,
	{ STEP4(0,1) },
	{ RGN_FRAC(1,2)+1*4,RGN_FRAC(1,2)+0*4,1*4,0*4, RGN_FRAC(1,2)+3*4,RGN_FRAC(1,2)+2*4,3*4,2*4},
	{ STEP8(0,16) },
	8*8*4/2
};

/* 8x8x8 tiles in 4 roms */
static const gfx_layout layout_8x8x8 =
{
	8,8,
	RGN_FRAC(1,4),
	8,
	{ STEP8(0,1) },
	{ RGN_FRAC(0,4) + 0*8, RGN_FRAC(1,4) + 0*8, RGN_FRAC(2,4) + 0*8, RGN_FRAC(3,4) + 0*8,
	  RGN_FRAC(0,4) + 1*8, RGN_FRAC(1,4) + 1*8, RGN_FRAC(2,4) + 1*8, RGN_FRAC(3,4) + 1*8 },
	{ STEP8(0,16) },
	8*8*8/4
};

static const gfx_decode yunsung8_gfxdecodeinfo[] =
{
	{ REGION_GFX1, 0, &layout_8x8x8, 0, 0x08 }, // [0] Tiles (Background)
	{ REGION_GFX2, 0, &layout_8x8x4, 0,	0x40 }, // [1] Tiles (Text)
	{ -1 }
};



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


                                Machine Drivers


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


static void yunsung8_adpcm_int(int irq)
{
	static int toggle=0;

	MSM5205_data_w (0,adpcm>>4);
	adpcm<<=4;

	toggle ^= 1;
	if (toggle)
		cpunum_set_input_line(1, INPUT_LINE_NMI, PULSE_LINE);
}

static struct MSM5205interface yunsung8_msm5205_interface =
{
	yunsung8_adpcm_int,	/* interrupt function */
	MSM5205_S96_4B		/* 4KHz, 4 Bits */
};


static MACHINE_DRIVER_START( yunsung8 )

	/* basic machine hardware */
	MDRV_CPU_ADD(Z80, 8000000)			/* Z80B */
	MDRV_CPU_PROGRAM_MAP(yunsung8_readmem,yunsung8_writemem)
	MDRV_CPU_IO_MAP(yunsung8_readport,yunsung8_writeport)
	MDRV_CPU_VBLANK_INT(irq0_line_hold,1)	/* No nmi routine */

	MDRV_CPU_ADD(Z80, 4000000)			/* ? */
	/* audio CPU */
	MDRV_CPU_PROGRAM_MAP(yunsung8_sound_readmem,yunsung8_sound_writemem)
	MDRV_CPU_VBLANK_INT(irq0_line_hold,1)	/* NMI caused by the MSM5205? */

	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)

	MDRV_MACHINE_RESET(yunsung8)

	/* video hardware */
	MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_RASTER)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(512, 256)
	MDRV_SCREEN_VISIBLE_AREA(0+64, 512-64-1, 0+8, 256-8-1)
	MDRV_GFXDECODE(yunsung8_gfxdecodeinfo)
	MDRV_PALETTE_LENGTH(2048)

	MDRV_VIDEO_START(yunsung8)
	MDRV_VIDEO_UPDATE(yunsung8)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_STEREO("left", "right")

	MDRV_SOUND_ADD(YM3812, 4000000)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "left", 1.0)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "right", 1.0)

	MDRV_SOUND_ADD(MSM5205, 384000)
	MDRV_SOUND_CONFIG(yunsung8_msm5205_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "left", 0.80)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "right", 0.80)
MACHINE_DRIVER_END


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


                                ROMs Loading


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

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

                                    Magix

Yun Sung, 1995.
CPU : Z80B
SND : Z80A + YM3812 + Oki M5205
OSC : 16.000

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

ROM_START( magix )

	ROM_REGION( 0x24000+0x4000, REGION_CPU1, 0 )		/* Main Z80 Code */
	ROM_LOAD( "yunsung8.07", 0x00000, 0x0c000, CRC(d4d0b68b) SHA1(d7e1fb57a14f8b822791b98cecc6d5a053a89e0f) )
	ROM_CONTINUE(         0x10000, 0x14000             )
	/* $2000 bytes for bank 0 of video ram (text) */
	/* $2000 bytes for bank 1 of video ram (background) */

	ROM_REGION( 0x24000, REGION_CPU2, 0 )		/* Sound Z80 Code */
	ROM_LOAD( "yunsung8.08", 0x00000, 0x0c000, CRC(6fd60be9) SHA1(87622dc2967842629e90a02b415bec86cc26cbc7) )
	ROM_CONTINUE(         0x10000, 0x14000             )

	ROM_REGION( 0x200000, REGION_GFX1, ROMREGION_DISPOSE )	/* Background */
	ROM_LOAD( "yunsung8.04",  0x000000, 0x80000, CRC(0a100d2b) SHA1(c36a2489748c8ac7b6d7457ad09d8153707c85be) )
	ROM_LOAD( "yunsung8.03",  0x080000, 0x80000, CRC(c8cb0373) SHA1(339c4e0fef44da3cab615e07dc8739bd925ebf28) )
	ROM_LOAD( "yunsung8.02",  0x100000, 0x80000, CRC(09efb8e5) SHA1(684bb5c4b579f8c77e79aab4decbefea495d9474) )
	ROM_LOAD( "yunsung8.01",  0x180000, 0x80000, CRC(4590d782) SHA1(af875166207793572b9ecf01bb6a24feba562a96) )

	ROM_REGION( 0x40000, REGION_GFX2, ROMREGION_DISPOSE )	/* Text */
	ROM_LOAD( "yunsung8.05", 0x00000, 0x20000, CRC(862d378c) SHA1(a4e2cf14b5b25c6b8725dd285ddea65ce9ee257a) )	// only first $8000 bytes != 0
	ROM_LOAD( "yunsung8.06", 0x20000, 0x20000, CRC(8b2ab901) SHA1(1a5c05dd0cf830b645357a62d8e6e876b44c6b7f) )	// only first $8000 bytes != 0

ROM_END


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

                                Cannon Ball

01, 02, 03, 04  are 27c020
05, 06, 07, 08  are 27c010
2 pals used

Z80b PROGRAM, Z80b SOUND

Cy7c384A
16MHz

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

ROM_START( cannball )

	ROM_REGION( 0x24000+0x4000, REGION_CPU1, 0 )		/* Main Z80 Code */
	ROM_LOAD( "cannball.07", 0x00000, 0x0c000, CRC(17db56b4) SHA1(032e3dbde0b0e315dcb5f2b31f57e75e78818f2d) )
	ROM_CONTINUE(            0x10000, 0x14000             )
	/* $2000 bytes for bank 0 of video ram (text) */
	/* $2000 bytes for bank 1 of video ram (background) */

	ROM_REGION( 0x24000, REGION_CPU2, 0 )		/* Sound Z80 Code */
	ROM_LOAD( "cannball.08", 0x00000, 0x0c000, CRC(11403875) SHA1(9f583bc4f08e7aef3fd0f3fe3f31cce1d226641a) )
	ROM_CONTINUE(            0x10000, 0x14000             )

	ROM_REGION( 0x100000, REGION_GFX1, ROMREGION_DISPOSE )	/* Background */
	ROM_LOAD( "cannball.01",  0x000000, 0x40000, CRC(2d7785e4) SHA1(9911354c0be192506f8bfca3e85ede0bbc4828d5) )
	ROM_LOAD( "cannball.02",  0x040000, 0x40000, CRC(24df387e) SHA1(5f4afe11feb367ca3b3c4f5eb37a6b6c4edb83bb) )
	ROM_LOAD( "cannball.03",  0x080000, 0x40000, CRC(4d62f192) SHA1(8c60b9b4b36c13c2d145c49413580a10e71eb283) )
	ROM_LOAD( "cannball.04",  0x0c0000, 0x40000, CRC(37cf8b12) SHA1(f93df8e0babe2c4ec996aa3c2a48bf40a5a02e62) )

	ROM_REGION( 0x40000, REGION_GFX2, ROMREGION_DISPOSE )	/* Text */
	ROM_LOAD( "cannball.05", 0x00000, 0x20000, CRC(87c1f1fa) SHA1(dbc568d2133734e41b69fd8d18b76531648b32ef) )
	ROM_LOAD( "cannball.06", 0x20000, 0x20000, CRC(e722bee8) SHA1(3aed7df9df81a6776b6bf2f5b167965b0d689216) )

ROM_END

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

Rock Tris by Yunsung

Pcb marked Ys-rock 940712

pcb has no sound, the osc for the msm5205 has been cut so I don't know the frequency

Pcb has no markings in the sockets and eproms have anonymous stickers

2x z80
1x 16mhz
1x UA010
1x msm5205
1x fpga
1x dipswitch (there is place for another one, but the space is empty and
they jumpered the first position)

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

ROM_START( rocktris )

	ROM_REGION( 0x24000+0x4000, REGION_CPU1, 0 )		/* Main Z80 Code */
	ROM_LOAD( "cpu.bin",     0x00000, 0x0c000, CRC(46e3b79c) SHA1(81a587b9f986c4e39b1888ec6ed6b86d1469b9a0) )
	ROM_CONTINUE(         0x10000, 0x14000             )
	/* $2000 bytes for bank 0 of video ram (text) */
	/* $2000 bytes for bank 1 of video ram (background) */

	ROM_REGION( 0x24000, REGION_CPU2, 0 )		/* Sound Z80 Code */
	ROM_LOAD( "cpu2.bin",    0x00000, 0x0c000, CRC(3a78a4cf) SHA1(f643c7a217cbb71f3a03f1f4a16545c546332819) )
	ROM_CONTINUE(         0x10000, 0x14000             )

	ROM_REGION( 0x200000, REGION_GFX1, ROMREGION_DISPOSE )	/* Background */
	ROM_LOAD( "gfx4.bin",     0x000000, 0x80000, CRC(abb49cac) SHA1(e2d766e950df398a8ec8b6888e128ffc3bdf1ce9) )
	ROM_LOAD( "gfx3.bin",     0x080000, 0x80000, CRC(70a6ad52) SHA1(04cd58d3f885dd7c2fb1061f93d3ae3a418ad762) )
	ROM_LOAD( "gfx2.bin",     0x100000, 0x80000, CRC(fcc9ec97) SHA1(1f09452988e3fa976b233e3b458c7a60977b76aa) )
	ROM_LOAD( "gfx1.bin",     0x180000, 0x80000, CRC(4295034d) SHA1(9bdbbcdb46eb659a13b77c5bb26c9d8ad43731a7) )


	ROM_REGION( 0x40000, REGION_GFX2, ROMREGION_DISPOSE )	/* Text */
	ROM_LOAD( "gfx5.bin",     0x00000, 0x20000, CRC(058ee379) SHA1(57088bb02c56212979b9119b773eedc31af17e50) )
	ROM_LOAD( "gfx6.bin",     0x20000, 0x20000, CRC(593cbd39) SHA1(4d60b5811118f3f22f6f3b300a4daec158456b72) )

ROM_END




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


                                Game Drivers


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

GAME( 1995,  cannball, 0, yunsung8, cannball, 0, ROT0, "Yun Sung / Soft Vision", "Cannon Ball",  GAME_IMPERFECT_SOUND )
GAME( 1995,  magix,    0, yunsung8, magix,    0, ROT0, "Yun Sung",               "Magix / Rock", GAME_IMPERFECT_SOUND ) // Title: DSW
GAME( 1994?, rocktris, 0, yunsung8, rocktris, 0, ROT0, "Yun Sung",               "Rock Tris",    GAME_IMPERFECT_SOUND )
