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

tecmo.c

driver by Nicola Salmoria


Silkworm memory map (preliminary)

0000-bfff ROM
c000-c1ff Background video RAM #2
c200-c3ff Background color RAM #2
c400-c5ff Background video RAM #1
c600-c7ff Background color RAM #1
c800-cbff Video RAM
cc00-cfff Color RAM
d000-dfff RAM
e000-e7ff Sprites
e800-efff Palette RAM, groups of 2 bytes, 4 bits per gun: xB RG
          e800-e9ff sprites
          ea00-ebff characters
          ec00-edff bg #1
          ee00-efff bg #2
f000-f7ff window for banked ROM

read:
f800      IN0 (heli) bit 0-3
f801      IN0 bit 4-7
f802      IN1 (jeep) bit 0-3
f803      IN1 bit 4-7
f806      DSWA bit 0-3
f807      DSWA bit 4-7
f808      DSWB bit 0-3
f809      DSWB bit 4-7
f80f      COIN

write:
f800-f801 bg #1 x scroll
f802      bg #1 y scroll
f803-f804 bg #2 x scroll
f805      bg #2 y scroll
f806      ????
f808      ROM bank selector
f809      ????
f80b      ????

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


extern int tecmo_video_type;
extern UINT8 *tecmo_txvideoram,*tecmo_fgvideoram,*tecmo_bgvideoram;

WRITE8_HANDLER( tecmo_txvideoram_w );
WRITE8_HANDLER( tecmo_fgvideoram_w );
WRITE8_HANDLER( tecmo_bgvideoram_w );
WRITE8_HANDLER( tecmo_fgscroll_w );
WRITE8_HANDLER( tecmo_bgscroll_w );
WRITE8_HANDLER( tecmo_flipscreen_w );

VIDEO_START( tecmo );
VIDEO_UPDATE( tecmo );



static WRITE8_HANDLER( tecmo_bankswitch_w )
{
	int bankaddress;
	UINT8 *RAM = memory_region(REGION_CPU1);


	bankaddress = 0x10000 + ((data & 0xf8) << 8);
	memory_set_bankptr(1,&RAM[bankaddress]);
}

static WRITE8_HANDLER( tecmo_sound_command_w )
{
	soundlatch_w(machine,offset,data);
	cpunum_set_input_line(machine, 1,INPUT_LINE_NMI,PULSE_LINE);
}

static int adpcm_pos,adpcm_end;

static WRITE8_HANDLER( tecmo_adpcm_start_w )
{
	adpcm_pos = data << 8;
	MSM5205_reset_w(0,0);
}
static WRITE8_HANDLER( tecmo_adpcm_end_w )
{
	adpcm_end = (data + 1) << 8;
}
static WRITE8_HANDLER( tecmo_adpcm_vol_w )
{
	MSM5205_set_volume(0,(data & 0x0f) * 100 / 15);
}
static void tecmo_adpcm_int(int num)
{
	static int adpcm_data = -1;

	if (adpcm_pos >= adpcm_end ||
				adpcm_pos >= memory_region_length(REGION_SOUND1))
		MSM5205_reset_w(0,1);
	else if (adpcm_data != -1)
	{
		MSM5205_data_w(0,adpcm_data & 0x0f);
		adpcm_data = -1;
	}
	else
	{
		UINT8 *ROM = memory_region(REGION_SOUND1);

		adpcm_data = ROM[adpcm_pos++];
		MSM5205_data_w(0,adpcm_data >> 4);
	}
}



static ADDRESS_MAP_START( readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0xbfff) AM_READ(SMH_ROM)
	AM_RANGE(0xc000, 0xefff) AM_READ(SMH_RAM)
	AM_RANGE(0xf000, 0xf7ff) AM_READ(SMH_BANK1)
	AM_RANGE(0xf800, 0xf800) AM_READ(input_port_0_r)
	AM_RANGE(0xf801, 0xf801) AM_READ(input_port_1_r)
	AM_RANGE(0xf802, 0xf802) AM_READ(input_port_2_r)
	AM_RANGE(0xf803, 0xf803) AM_READ(input_port_3_r)
	AM_RANGE(0xf804, 0xf804) AM_READ(input_port_4_r)
	AM_RANGE(0xf805, 0xf805) AM_READ(input_port_5_r)
	AM_RANGE(0xf806, 0xf806) AM_READ(input_port_6_r)
	AM_RANGE(0xf807, 0xf807) AM_READ(input_port_7_r)
	AM_RANGE(0xf808, 0xf808) AM_READ(input_port_8_r)
	AM_RANGE(0xf809, 0xf809) AM_READ(input_port_9_r)
	AM_RANGE(0xf80f, 0xf80f) AM_READ(input_port_10_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START( rygar_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0xbfff) AM_WRITE(SMH_ROM)
	AM_RANGE(0xc000, 0xcfff) AM_WRITE(SMH_RAM)
	AM_RANGE(0xd000, 0xd7ff) AM_WRITE(tecmo_txvideoram_w) AM_BASE(&tecmo_txvideoram)
	AM_RANGE(0xd800, 0xdbff) AM_WRITE(tecmo_fgvideoram_w) AM_BASE(&tecmo_fgvideoram)
	AM_RANGE(0xdc00, 0xdfff) AM_WRITE(tecmo_bgvideoram_w) AM_BASE(&tecmo_bgvideoram)
	AM_RANGE(0xe000, 0xe7ff) AM_WRITE(SMH_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0xe800, 0xefff) AM_WRITE(paletteram_xxxxBBBBRRRRGGGG_be_w) AM_BASE(&paletteram)
	AM_RANGE(0xf000, 0xf7ff) AM_WRITE(SMH_ROM)
	AM_RANGE(0xf800, 0xf802) AM_WRITE(tecmo_fgscroll_w)
	AM_RANGE(0xf803, 0xf805) AM_WRITE(tecmo_bgscroll_w)
	AM_RANGE(0xf806, 0xf806) AM_WRITE(tecmo_sound_command_w)
	AM_RANGE(0xf807, 0xf807) AM_WRITE(tecmo_flipscreen_w)
	AM_RANGE(0xf808, 0xf808) AM_WRITE(tecmo_bankswitch_w)
	AM_RANGE(0xf80b, 0xf80b) AM_WRITE(watchdog_reset_w)
ADDRESS_MAP_END

static ADDRESS_MAP_START( gemini_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0xbfff) AM_WRITE(SMH_ROM)
	AM_RANGE(0xc000, 0xcfff) AM_WRITE(SMH_RAM)
	AM_RANGE(0xd000, 0xd7ff) AM_WRITE(tecmo_txvideoram_w) AM_BASE(&tecmo_txvideoram)
	AM_RANGE(0xd800, 0xdbff) AM_WRITE(tecmo_fgvideoram_w) AM_BASE(&tecmo_fgvideoram)
	AM_RANGE(0xdc00, 0xdfff) AM_WRITE(tecmo_bgvideoram_w) AM_BASE(&tecmo_bgvideoram)
	AM_RANGE(0xe000, 0xe7ff) AM_WRITE(paletteram_xxxxBBBBRRRRGGGG_be_w) AM_BASE(&paletteram)
	AM_RANGE(0xe800, 0xefff) AM_WRITE(SMH_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0xf000, 0xf7ff) AM_WRITE(SMH_ROM)
	AM_RANGE(0xf800, 0xf802) AM_WRITE(tecmo_fgscroll_w)
	AM_RANGE(0xf803, 0xf805) AM_WRITE(tecmo_bgscroll_w)
	AM_RANGE(0xf806, 0xf806) AM_WRITE(tecmo_sound_command_w)
	AM_RANGE(0xf807, 0xf807) AM_WRITE(tecmo_flipscreen_w)
	AM_RANGE(0xf808, 0xf808) AM_WRITE(tecmo_bankswitch_w)
	AM_RANGE(0xf80b, 0xf80b) AM_WRITE(watchdog_reset_w)
ADDRESS_MAP_END

static ADDRESS_MAP_START( silkworm_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0xbfff) AM_WRITE(SMH_ROM)
	AM_RANGE(0xc000, 0xc3ff) AM_WRITE(tecmo_bgvideoram_w) AM_BASE(&tecmo_bgvideoram)
	AM_RANGE(0xc400, 0xc7ff) AM_WRITE(tecmo_fgvideoram_w) AM_BASE(&tecmo_fgvideoram)
	AM_RANGE(0xc800, 0xcfff) AM_WRITE(tecmo_txvideoram_w) AM_BASE(&tecmo_txvideoram)
	AM_RANGE(0xd000, 0xdfff) AM_WRITE(SMH_RAM)
	AM_RANGE(0xe000, 0xe7ff) AM_WRITE(SMH_RAM) AM_BASE(&spriteram) AM_SIZE(&spriteram_size)
	AM_RANGE(0xe800, 0xefff) AM_WRITE(paletteram_xxxxBBBBRRRRGGGG_be_w) AM_BASE(&paletteram)
	AM_RANGE(0xf000, 0xf7ff) AM_WRITE(SMH_ROM)
	AM_RANGE(0xf800, 0xf802) AM_WRITE(tecmo_fgscroll_w)
	AM_RANGE(0xf803, 0xf805) AM_WRITE(tecmo_bgscroll_w)
	AM_RANGE(0xf806, 0xf806) AM_WRITE(tecmo_sound_command_w)
	AM_RANGE(0xf807, 0xf807) AM_WRITE(tecmo_flipscreen_w)
	AM_RANGE(0xf808, 0xf808) AM_WRITE(tecmo_bankswitch_w)
	AM_RANGE(0xf809, 0xf809) AM_WRITE(SMH_NOP)	/* ? */
	AM_RANGE(0xf80b, 0xf80b) AM_WRITE(SMH_NOP)	/* ? if mapped to watchdog like in the others, causes reset */
ADDRESS_MAP_END

static ADDRESS_MAP_START( rygar_sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x3fff) AM_READ(SMH_ROM)
	AM_RANGE(0x4000, 0x47ff) AM_READ(SMH_RAM)
	AM_RANGE(0xc000, 0xc000) AM_READ(soundlatch_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START( rygar_sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x3fff) AM_WRITE(SMH_ROM)
	AM_RANGE(0x4000, 0x47ff) AM_WRITE(SMH_RAM)
	AM_RANGE(0x8000, 0x8000) AM_WRITE(YM3812_control_port_0_w)
	AM_RANGE(0x8001, 0x8001) AM_WRITE(YM3812_write_port_0_w)
	AM_RANGE(0xc000, 0xc000) AM_WRITE(tecmo_adpcm_start_w)
	AM_RANGE(0xd000, 0xd000) AM_WRITE(tecmo_adpcm_end_w)
	AM_RANGE(0xe000, 0xe000) AM_WRITE(tecmo_adpcm_vol_w)
	AM_RANGE(0xf000, 0xf000) AM_WRITE(SMH_NOP)	/* NMI acknowledge */
ADDRESS_MAP_END

static ADDRESS_MAP_START( tecmo_sound_readmem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x7fff) AM_READ(SMH_ROM)
	AM_RANGE(0x8000, 0x87ff) AM_READ(SMH_RAM)
	AM_RANGE(0xc000, 0xc000) AM_READ(soundlatch_r)
ADDRESS_MAP_END

static ADDRESS_MAP_START( tecmo_sound_writemem, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x2000, 0x207f) AM_WRITE(SMH_RAM)	/* Silkworm set #2 has a custom CPU which */
									/* writes code to this area */
	AM_RANGE(0x0000, 0x7fff) AM_WRITE(SMH_ROM)
	AM_RANGE(0x8000, 0x87ff) AM_WRITE(SMH_RAM)
	AM_RANGE(0xa000, 0xa000) AM_WRITE(YM3812_control_port_0_w)
	AM_RANGE(0xa001, 0xa001) AM_WRITE(YM3812_write_port_0_w)
	AM_RANGE(0xc000, 0xc000) AM_WRITE(tecmo_adpcm_start_w)
	AM_RANGE(0xc400, 0xc400) AM_WRITE(tecmo_adpcm_end_w)
	AM_RANGE(0xc800, 0xc800) AM_WRITE(tecmo_adpcm_vol_w)
	AM_RANGE(0xcc00, 0xcc00) AM_WRITE(SMH_NOP)	/* NMI acknowledge */
ADDRESS_MAP_END



static INPUT_PORTS_START( rygar )
	PORT_START	/* IN0 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY

	PORT_START	/* IN1 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_SERVICE1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* IN2 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL

	PORT_START	/* IN3 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* IN4 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN2 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_COIN1 )

	PORT_START	/* unused? */
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* DSWA bit 0-3 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0C, 0x00, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x0C, DEF_STR( 1C_3C ) )

	PORT_START	/* DSWA bit 4-7 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPNAME( 0x04, 0x04, DEF_STR( Cabinet ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Cocktail ) )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unused ) ) /* Listed as "Unused" in the manual */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )

	PORT_START	/* DSWB bit 0-3 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "50000 200000 500000" )
	PORT_DIPSETTING(    0x01, "100000 300000 600000" )
	PORT_DIPSETTING(    0x02, "200000 500000" )
	PORT_DIPSETTING(    0x03, "100000" )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Unused ) ) /* Listed as "Unused" in the manual */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unused ) ) /* Listed as "Unused" in the manual */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )

	PORT_START	/* DSWB bit 4-7 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x02, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x03, DEF_STR( Hardest ) )
	PORT_DIPNAME( 0x04, 0x00, "2P Can Start Anytime" )
	PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Yes ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Yes ) )

	PORT_START	/* unused? */
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )
INPUT_PORTS_END

static INPUT_PORTS_START( gemini )
	PORT_START	/* IN0 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY

	PORT_START	/* IN1 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* IN2 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_COCKTAIL

	PORT_START	/* IN3 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNKNOWN )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* unused? */
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* IN4 bits 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_COIN2 )

	PORT_START	/* DSWA bit 0-3 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x08, 0x00, "Final Round Continuation" )
	PORT_DIPSETTING(    0x00, "Round 6" )
	PORT_DIPSETTING(    0x08, "Round 7" )

	PORT_START	/* DSWA bit 4-7 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x06, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x07, DEF_STR( 2C_3C ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_3C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_4C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_5C ) )
	PORT_DIPSETTING(    0x05, DEF_STR( 1C_6C ) )
	PORT_DIPNAME( 0x08, 0x00, "Buy in During Final Round" )
	PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Yes ) )

	PORT_START	/* DSWB bit 0-3 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x04, DEF_STR( Normal ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Hard ) )
	PORT_DIPSETTING(    0x0c, DEF_STR( Hardest ) )

	PORT_START	/* DSWB bit 4-7 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "50000 200000" )
	PORT_DIPSETTING(    0x01, "50000 300000" )
	PORT_DIPSETTING(    0x02, "100000 500000" )
	PORT_DIPSETTING(    0x03, "50000" )
	PORT_DIPSETTING(    0x04, "100000" )
	PORT_DIPSETTING(    0x05, "200000" )
	PORT_DIPSETTING(    0x06, "300000" )
	PORT_DIPSETTING(    0x07, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x08, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x00, DEF_STR( On ) )

	PORT_START	/* unused? */
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )
INPUT_PORTS_END

static INPUT_PORTS_START( silkworm )
	PORT_START	/* IN0 bit 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY

	PORT_START	/* IN0 bit 4-7 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON3 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )	/* unused? */

	PORT_START	/* IN1 bit 0-3 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(2)

	PORT_START	/* IN1 bit 4-7 */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_PLAYER(2)
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNKNOWN )	/* unused? */

	PORT_START	/* unused? */
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* unused? */
	PORT_BIT( 0x0f, IP_ACTIVE_HIGH, IPT_UNKNOWN )

	PORT_START	/* DSWA bit 0-3 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Coin_A ) )
	PORT_DIPSETTING(    0x01, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x02, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x03, DEF_STR( 1C_3C ) )
	PORT_DIPNAME( 0x0C, 0x00, DEF_STR( Coin_B ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 2C_1C ) )
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x08, DEF_STR( 1C_2C ) )
	PORT_DIPSETTING(    0x0C, DEF_STR( 1C_3C ) )

	PORT_START	/* DSWA bit 4-7 */
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )
	PORT_DIPSETTING(    0x03, "2" )
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPNAME( 0x04, 0x00, DEF_STR( Unknown ) )	/* unused? */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x04, DEF_STR( On ) )
	PORT_DIPNAME( 0x08, 0x08, DEF_STR( Demo_Sounds ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )

	PORT_START	/* DSWB bit 0-3 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Bonus_Life ) )
	PORT_DIPSETTING(    0x00, "50000 200000 500000" )
	PORT_DIPSETTING(    0x01, "100000 300000 800000" )
	PORT_DIPSETTING(    0x02, "50000 200000" )
	PORT_DIPSETTING(    0x03, "100000 300000" )
	PORT_DIPSETTING(    0x04, "50000" )
	PORT_DIPSETTING(    0x05, "100000" )
	PORT_DIPSETTING(    0x06, "200000" )
	PORT_DIPSETTING(    0x07, DEF_STR( None ) )
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Unknown ) )	/* unused? */
	PORT_DIPSETTING(    0x00, DEF_STR( Off ) )
	PORT_DIPSETTING(    0x08, DEF_STR( On ) )

	PORT_START	/* DSWB bit 4-7 */
	PORT_DIPNAME( 0x07, 0x00, DEF_STR( Difficulty ) )
	PORT_DIPSETTING(    0x00, "0" )
	PORT_DIPSETTING(    0x01, "1" )
	PORT_DIPSETTING(    0x02, "2" )
	PORT_DIPSETTING(    0x03, "3" )
	PORT_DIPSETTING(    0x04, "4" )
	PORT_DIPSETTING(    0x05, "5" )
	/* 0x06 and 0x07 are the same as 0x00 */
	PORT_DIPNAME( 0x08, 0x00, DEF_STR( Allow_Continue ) )
	PORT_DIPSETTING(    0x08, DEF_STR( No ) )
	PORT_DIPSETTING(    0x00, DEF_STR( Yes ) )

	PORT_START	/* COIN */
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_COIN1 )
	PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_COIN2 )
INPUT_PORTS_END



static const gfx_layout charlayout =
{
	8,8,
	RGN_FRAC(1,1),
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8
};

static const gfx_layout tilelayout =
{
	16,16,
	RGN_FRAC(1,1),
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4,
			32*8+0*4, 32*8+1*4, 32*8+2*4, 32*8+3*4, 32*8+4*4, 32*8+5*4, 32*8+6*4, 32*8+7*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
};

static const gfx_layout spritelayout =
{
	8,8,
	RGN_FRAC(1,1),
	4,
	{ 0, 1, 2, 3 },
	{ 0*4, 1*4, 2*4, 3*4, 4*4, 5*4, 6*4, 7*4 },
	{ 0*32, 1*32, 2*32, 3*32, 4*32, 5*32, 6*32, 7*32 },
	32*8
};

static GFXDECODE_START( tecmo )
	GFXDECODE_ENTRY( REGION_GFX1, 0, charlayout, 256, 16 )	/* colors 256 - 511 */
	GFXDECODE_ENTRY( REGION_GFX2, 0, spritelayout, 0, 16 )	/* colors   0 - 255 */
	GFXDECODE_ENTRY( REGION_GFX3, 0, tilelayout, 512, 16 )	/* colors 512 - 767 */
	GFXDECODE_ENTRY( REGION_GFX4, 0, tilelayout, 768, 16 )	/* colors 768 - 1023 */
GFXDECODE_END



static void irqhandler(int linestate)
{
	cpunum_set_input_line(Machine, 1,0,linestate);
}

static const struct YM3526interface ym3812_interface =
{
	irqhandler
};

static const struct MSM5205interface msm5205_interface =
{
	tecmo_adpcm_int,	/* interrupt function */
	MSM5205_S48_4B		/* 8KHz               */
};



static MACHINE_DRIVER_START( rygar )

	/* basic machine hardware */
	MDRV_CPU_ADD_TAG("main", Z80, 4000000)
	MDRV_CPU_PROGRAM_MAP(readmem,rygar_writemem)
	MDRV_CPU_VBLANK_INT("main", irq0_line_hold)

	MDRV_CPU_ADD_TAG("sound", Z80, 4000000)
	/* audio CPU */
	MDRV_CPU_PROGRAM_MAP(rygar_sound_readmem,rygar_sound_writemem)

	/* video hardware */
	MDRV_SCREEN_ADD("main", RASTER)
	MDRV_SCREEN_REFRESH_RATE(60)
	MDRV_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(0)	/* frames per second, vblank duration */)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
	MDRV_SCREEN_SIZE(32*8, 32*8)
	MDRV_SCREEN_VISIBLE_AREA(0*8, 32*8-1, 2*8, 30*8-1)

	MDRV_GFXDECODE(tecmo)
	MDRV_PALETTE_LENGTH(1024)

	MDRV_VIDEO_START(tecmo)
	MDRV_VIDEO_UPDATE(tecmo)

	/* sound hardware */
	MDRV_SPEAKER_STANDARD_MONO("mono")

	MDRV_SOUND_ADD(YM3812, 4000000)
	MDRV_SOUND_CONFIG(ym3812_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.0)

	MDRV_SOUND_ADD(MSM5205, 384000)
	MDRV_SOUND_CONFIG(msm5205_interface)
	MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( gemini )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(rygar)
	MDRV_CPU_REPLACE("main", Z80, 6000000)
	MDRV_CPU_PROGRAM_MAP(readmem,gemini_writemem)

	MDRV_CPU_MODIFY("sound")
	MDRV_CPU_PROGRAM_MAP(tecmo_sound_readmem,tecmo_sound_writemem)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( silkworm )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(gemini)
	MDRV_CPU_REPLACE("main", Z80, 6000000)
	MDRV_CPU_PROGRAM_MAP(readmem,silkworm_writemem)
MACHINE_DRIVER_END



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

  Game driver(s)

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

ROM_START( rygar )
	ROM_REGION( 0x18000, REGION_CPU1, 0 )
	ROM_LOAD( "5.5p",         0x00000, 0x08000, CRC(062cd55d) SHA1(656e29c890f5de964920b7841b3e11469cd20051) ) /* code */
	ROM_LOAD( "cpu_5m.bin",   0x08000, 0x04000, CRC(7ac5191b) SHA1(305f39d974f906f9bc24e9fe2ca58e647925ab63) ) /* code */
	ROM_LOAD( "cpu_5j.bin",   0x10000, 0x08000, CRC(ed76d606) SHA1(39c8a07e9a1f218ad088d00a2c9dfc993efafb6b) ) /* banked at f000-f7ff */

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "cpu_4h.bin",   0x0000, 0x2000, CRC(e4a2fa87) SHA1(ed58187dbbcf59358496a98ffd6c227a87d6c433) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "cpu_8k.bin",   0x00000, 0x08000, CRC(4d482fb6) SHA1(57ad838b6d30b49dbd2d0ec425f33cfb15a67918) )	/* characters */

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6k.bin",   0x00000, 0x08000, CRC(aba6db9e) SHA1(43eb6f4f92afb5fbc11adc7e2ab04878ab56cb17) )	/* sprites */
	ROM_LOAD( "vid_6j.bin",   0x08000, 0x08000, CRC(ae1f2ed6) SHA1(6e6a33e665ba0884b7f57e9ad69d3f51e41d9e7b) )	/* sprites */
	ROM_LOAD( "vid_6h.bin",   0x10000, 0x08000, CRC(46d9e7df) SHA1(a24e0bea310a03636af704a0ad3f1a9cc4aafe12) )	/* sprites */
	ROM_LOAD( "vid_6g.bin",   0x18000, 0x08000, CRC(45839c9a) SHA1(eaee5767d8b0b62b991c089ef51b922e89850b79) )	/* sprites */

	ROM_REGION( 0x20000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6p.bin",   0x00000, 0x08000, CRC(9eae5f8e) SHA1(ed83b608ca57b9bf69fa866d9b8f55d16b7cff63) )
	ROM_LOAD( "vid_6o.bin",   0x08000, 0x08000, CRC(5a10a396) SHA1(12ebed3952ff35a2c275cb27c915f82183048cd4) )
	ROM_LOAD( "vid_6n.bin",   0x10000, 0x08000, CRC(7b12cf3f) SHA1(6b9d8cad6e15317df01bab0591fab09199ca6d40) )
	ROM_LOAD( "vid_6l.bin",   0x18000, 0x08000, CRC(3cea7eaa) SHA1(1dd194d5672dfe71c2b27d2d7b76f5a611cff76f) )

	ROM_REGION( 0x20000, REGION_GFX4, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6f.bin",   0x00000, 0x08000, CRC(9840edd8) SHA1(f19a1a1d932214037144c533ad07ed81256c34e7) )
	ROM_LOAD( "vid_6e.bin",   0x08000, 0x08000, CRC(ff65e074) SHA1(513c1bad336ef5d871f15d6ba8943020f98d1f4a) )
	ROM_LOAD( "vid_6c.bin",   0x10000, 0x08000, CRC(89868c85) SHA1(f21550f40e7a177e95c40f2726c651f85ca8edce) )
	ROM_LOAD( "vid_6b.bin",   0x18000, 0x08000, CRC(35389a7b) SHA1(a887a89f9bbb5979bb589468d80efba1f243690b) )

	ROM_REGION( 0x4000, REGION_SOUND1, 0 )	/* ADPCM samples */
	ROM_LOAD( "cpu_1f.bin",   0x0000, 0x4000, CRC(3cc98c5a) SHA1(ea1035be939ed1a994f3273b33412c85dda0973e) )
ROM_END

ROM_START( rygar2 )
	ROM_REGION( 0x18000, REGION_CPU1, 0 )
	ROM_LOAD( "cpu_5p.bin",   0x00000, 0x08000, CRC(e79c054a) SHA1(1aaffa53d121d5c55899bf18e85c42333fe0df54) ) /* code */
	ROM_LOAD( "cpu_5m.bin",   0x08000, 0x04000, CRC(7ac5191b) SHA1(305f39d974f906f9bc24e9fe2ca58e647925ab63) ) /* code */
	ROM_LOAD( "cpu_5j.bin",   0x10000, 0x08000, CRC(ed76d606) SHA1(39c8a07e9a1f218ad088d00a2c9dfc993efafb6b) ) /* banked at f000-f7ff */

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "cpu_4h.bin",   0x0000, 0x2000, CRC(e4a2fa87) SHA1(ed58187dbbcf59358496a98ffd6c227a87d6c433) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "cpu_8k.bin",   0x00000, 0x08000, CRC(4d482fb6) SHA1(57ad838b6d30b49dbd2d0ec425f33cfb15a67918) )	/* characters */

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6k.bin",   0x00000, 0x08000, CRC(aba6db9e) SHA1(43eb6f4f92afb5fbc11adc7e2ab04878ab56cb17) )	/* sprites */
	ROM_LOAD( "vid_6j.bin",   0x08000, 0x08000, CRC(ae1f2ed6) SHA1(6e6a33e665ba0884b7f57e9ad69d3f51e41d9e7b) )	/* sprites */
	ROM_LOAD( "vid_6h.bin",   0x10000, 0x08000, CRC(46d9e7df) SHA1(a24e0bea310a03636af704a0ad3f1a9cc4aafe12) )	/* sprites */
	ROM_LOAD( "vid_6g.bin",   0x18000, 0x08000, CRC(45839c9a) SHA1(eaee5767d8b0b62b991c089ef51b922e89850b79) )	/* sprites */

	ROM_REGION( 0x20000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6p.bin",   0x00000, 0x08000, CRC(9eae5f8e) SHA1(ed83b608ca57b9bf69fa866d9b8f55d16b7cff63) )
	ROM_LOAD( "vid_6o.bin",   0x08000, 0x08000, CRC(5a10a396) SHA1(12ebed3952ff35a2c275cb27c915f82183048cd4) )
	ROM_LOAD( "vid_6n.bin",   0x10000, 0x08000, CRC(7b12cf3f) SHA1(6b9d8cad6e15317df01bab0591fab09199ca6d40) )
	ROM_LOAD( "vid_6l.bin",   0x18000, 0x08000, CRC(3cea7eaa) SHA1(1dd194d5672dfe71c2b27d2d7b76f5a611cff76f) )

	ROM_REGION( 0x20000, REGION_GFX4, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6f.bin",   0x00000, 0x08000, CRC(9840edd8) SHA1(f19a1a1d932214037144c533ad07ed81256c34e7) )
	ROM_LOAD( "vid_6e.bin",   0x08000, 0x08000, CRC(ff65e074) SHA1(513c1bad336ef5d871f15d6ba8943020f98d1f4a) )
	ROM_LOAD( "vid_6c.bin",   0x10000, 0x08000, CRC(89868c85) SHA1(f21550f40e7a177e95c40f2726c651f85ca8edce) )
	ROM_LOAD( "vid_6b.bin",   0x18000, 0x08000, CRC(35389a7b) SHA1(a887a89f9bbb5979bb589468d80efba1f243690b) )

	ROM_REGION( 0x4000, REGION_SOUND1, 0 )	/* ADPCM samples */
	ROM_LOAD( "cpu_1f.bin",   0x0000, 0x4000, CRC(3cc98c5a) SHA1(ea1035be939ed1a994f3273b33412c85dda0973e) )
ROM_END

ROM_START( rygarj )
	ROM_REGION( 0x18000, REGION_CPU1, 0 )

	ROM_LOAD( "cpuj_5p.bin",  0x00000, 0x08000, CRC(b39698ba) SHA1(01a5a12a71973ad117b0bbd763e470f89c439e45) ) /* code */
	ROM_LOAD( "cpuj_5m.bin",  0x08000, 0x04000, CRC(3f180979) SHA1(c4c2e9f83b06b8677978800bfcc39f4ba3b344ab) ) /* code */
	ROM_LOAD( "cpuj_5j.bin",  0x10000, 0x08000, CRC(69e44e8f) SHA1(e979760a3582e64788c043adf7e475f0e1b75033) ) /* banked at f000-f7ff */

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "cpu_4h.bin",   0x0000, 0x2000, CRC(e4a2fa87) SHA1(ed58187dbbcf59358496a98ffd6c227a87d6c433) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "cpuj_8k.bin",  0x00000, 0x08000, CRC(45047707) SHA1(deb47f5ec4b22e55e0393d8108e4ffb67dd68e12) )	/* characters */

	ROM_REGION( 0x20000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6k.bin",   0x00000, 0x08000, CRC(aba6db9e) SHA1(43eb6f4f92afb5fbc11adc7e2ab04878ab56cb17) )	/* sprites */
	ROM_LOAD( "vid_6j.bin",   0x08000, 0x08000, CRC(ae1f2ed6) SHA1(6e6a33e665ba0884b7f57e9ad69d3f51e41d9e7b) )	/* sprites */
	ROM_LOAD( "vid_6h.bin",   0x10000, 0x08000, CRC(46d9e7df) SHA1(a24e0bea310a03636af704a0ad3f1a9cc4aafe12) )	/* sprites */
	ROM_LOAD( "vid_6g.bin",   0x18000, 0x08000, CRC(45839c9a) SHA1(eaee5767d8b0b62b991c089ef51b922e89850b79) )	/* sprites */

	ROM_REGION( 0x20000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6p.bin",   0x00000, 0x08000, CRC(9eae5f8e) SHA1(ed83b608ca57b9bf69fa866d9b8f55d16b7cff63) )
	ROM_LOAD( "vid_6o.bin",   0x08000, 0x08000, CRC(5a10a396) SHA1(12ebed3952ff35a2c275cb27c915f82183048cd4) )
	ROM_LOAD( "vid_6n.bin",   0x10000, 0x08000, CRC(7b12cf3f) SHA1(6b9d8cad6e15317df01bab0591fab09199ca6d40) )
	ROM_LOAD( "vid_6l.bin",   0x18000, 0x08000, CRC(3cea7eaa) SHA1(1dd194d5672dfe71c2b27d2d7b76f5a611cff76f) )

	ROM_REGION( 0x20000, REGION_GFX4, ROMREGION_DISPOSE )
	ROM_LOAD( "vid_6f.bin",   0x00000, 0x08000, CRC(9840edd8) SHA1(f19a1a1d932214037144c533ad07ed81256c34e7) )
	ROM_LOAD( "vid_6e.bin",   0x08000, 0x08000, CRC(ff65e074) SHA1(513c1bad336ef5d871f15d6ba8943020f98d1f4a) )
	ROM_LOAD( "vid_6c.bin",   0x10000, 0x08000, CRC(89868c85) SHA1(f21550f40e7a177e95c40f2726c651f85ca8edce) )
	ROM_LOAD( "vid_6b.bin",   0x18000, 0x08000, CRC(35389a7b) SHA1(a887a89f9bbb5979bb589468d80efba1f243690b) )

	ROM_REGION( 0x4000, REGION_SOUND1, 0 )	/* ADPCM samples */
	ROM_LOAD( "cpu_1f.bin",   0x0000, 0x4000, CRC(3cc98c5a) SHA1(ea1035be939ed1a994f3273b33412c85dda0973e) )
ROM_END

ROM_START( silkworm )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )
	ROM_LOAD( "silkworm.4",   0x00000, 0x10000, CRC(a5277cce) SHA1(3886a3f3d1230d49d541f884c5b29938e13f98c8) )	/* c000-ffff is not used */
	ROM_LOAD( "silkworm.5",   0x10000, 0x10000, CRC(a6c7bb51) SHA1(75f6625459ab65f2d47a282c1295d4db38f5fe51) )	/* banked at f000-f7ff */

	ROM_REGION( 0x20000, REGION_CPU2, 0 )
	ROM_LOAD( "silkworm.3",   0x0000, 0x8000, CRC(b589f587) SHA1(0be5e2bf3daf3e28d63fdc8c89bb6fe7c48c6c3f) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.2",   0x00000, 0x08000, CRC(e80a1cd9) SHA1(ef16feb1113acc7401f8951158b25f6f201196f2) )	/* characters */

	ROM_REGION( 0x40000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.6",   0x00000, 0x10000, CRC(1138d159) SHA1(3b938606d448c4effdfe414bbf495b50cc3bc1c1) )	/* sprites */
	ROM_LOAD( "silkworm.7",   0x10000, 0x10000, CRC(d96214f7) SHA1(a5b2be3ae6a6eb8afef2c18c865a998fbf4adf93) )	/* sprites */
	ROM_LOAD( "silkworm.8",   0x20000, 0x10000, CRC(0494b38e) SHA1(03255f153824056e430a0b8595103f3b58b1fd97) )	/* sprites */
	ROM_LOAD( "silkworm.9",   0x30000, 0x10000, CRC(8ce3cdf5) SHA1(635248514c4e1e5aab7a2ed4d620a5b970d4a43a) )	/* sprites */

	ROM_REGION( 0x40000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.10",  0x00000, 0x10000, CRC(8c7138bb) SHA1(0cfd69fa77d5b546f7dad80537d8d2497ae758bc) )	/* tiles #1 */
	ROM_LOAD( "silkworm.11",  0x10000, 0x10000, CRC(6c03c476) SHA1(79ad800a2f4ba6d44ba5a31210cbd8566bb357b6) )	/* tiles #1 */
	ROM_LOAD( "silkworm.12",  0x20000, 0x10000, CRC(bb0f568f) SHA1(b66c6d0407ed0b068c6bf07987f1b923d4a6e4f8) )	/* tiles #1 */
	ROM_LOAD( "silkworm.13",  0x30000, 0x10000, CRC(773ad0a4) SHA1(f7576e1ac8c779b33d7ec393555fd097a34257fa) )	/* tiles #1 */

	ROM_REGION( 0x40000, REGION_GFX4, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.14",  0x00000, 0x10000, CRC(409df64b) SHA1(cada970bf9cc8f6522e7a71e00fe873568852873) )	/* tiles #2 */
	ROM_LOAD( "silkworm.15",  0x10000, 0x10000, CRC(6e4052c9) SHA1(e2e3d7221b75cb044449a25a076a93c3def1f11b) )	/* tiles #2 */
	ROM_LOAD( "silkworm.16",  0x20000, 0x10000, CRC(9292ed63) SHA1(70aa46fcc187b8200c5d246870e2e2dc4b2985cb) )	/* tiles #2 */
	ROM_LOAD( "silkworm.17",  0x30000, 0x10000, CRC(3fa4563d) SHA1(46e3cc41491d63efcdda43c84c7ac1385a1926d0) )	/* tiles #2 */

	ROM_REGION( 0x8000, REGION_SOUND1, 0 )	/* ADPCM samples */
	ROM_LOAD( "silkworm.1",   0x0000, 0x8000, CRC(5b553644) SHA1(5d39d2251094c17f7b732b4861401b3516fce9b1) )
ROM_END

ROM_START( silkwrm2 )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )
	ROM_LOAD( "r4",           0x00000, 0x10000, CRC(6df3df22) SHA1(9d6201c2df014bdb6877dfff936dddde1fe6fbd0) )	/* c000-ffff is not used */
	ROM_LOAD( "silkworm.5",   0x10000, 0x10000, CRC(a6c7bb51) SHA1(75f6625459ab65f2d47a282c1295d4db38f5fe51) )	/* banked at f000-f7ff */

	ROM_REGION( 0x20000, REGION_CPU2, 0 )
	ROM_LOAD( "r3",           0x0000, 0x8000, CRC(b79848d0) SHA1(d8162ab847bd0768572454d9775b0e9ed92b9519) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.2",   0x00000, 0x08000, CRC(e80a1cd9) SHA1(ef16feb1113acc7401f8951158b25f6f201196f2) )	/* characters */

	ROM_REGION( 0x40000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.6",   0x00000, 0x10000, CRC(1138d159) SHA1(3b938606d448c4effdfe414bbf495b50cc3bc1c1) )	/* sprites */
	ROM_LOAD( "silkworm.7",   0x10000, 0x10000, CRC(d96214f7) SHA1(a5b2be3ae6a6eb8afef2c18c865a998fbf4adf93) )	/* sprites */
	ROM_LOAD( "silkworm.8",   0x20000, 0x10000, CRC(0494b38e) SHA1(03255f153824056e430a0b8595103f3b58b1fd97) )	/* sprites */
	ROM_LOAD( "silkworm.9",   0x30000, 0x10000, CRC(8ce3cdf5) SHA1(635248514c4e1e5aab7a2ed4d620a5b970d4a43a) )	/* sprites */

	ROM_REGION( 0x40000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.10",  0x00000, 0x10000, CRC(8c7138bb) SHA1(0cfd69fa77d5b546f7dad80537d8d2497ae758bc) )	/* tiles #1 */
	ROM_LOAD( "silkworm.11",  0x10000, 0x10000, CRC(6c03c476) SHA1(79ad800a2f4ba6d44ba5a31210cbd8566bb357b6) )	/* tiles #1 */
	ROM_LOAD( "silkworm.12",  0x20000, 0x10000, CRC(bb0f568f) SHA1(b66c6d0407ed0b068c6bf07987f1b923d4a6e4f8) )	/* tiles #1 */
	ROM_LOAD( "silkworm.13",  0x30000, 0x10000, CRC(773ad0a4) SHA1(f7576e1ac8c779b33d7ec393555fd097a34257fa) )	/* tiles #1 */

	ROM_REGION( 0x40000, REGION_GFX4, ROMREGION_DISPOSE )
	ROM_LOAD( "silkworm.14",  0x00000, 0x10000, CRC(409df64b) SHA1(cada970bf9cc8f6522e7a71e00fe873568852873) )	/* tiles #2 */
	ROM_LOAD( "silkworm.15",  0x10000, 0x10000, CRC(6e4052c9) SHA1(e2e3d7221b75cb044449a25a076a93c3def1f11b) )	/* tiles #2 */
	ROM_LOAD( "silkworm.16",  0x20000, 0x10000, CRC(9292ed63) SHA1(70aa46fcc187b8200c5d246870e2e2dc4b2985cb) )	/* tiles #2 */
	ROM_LOAD( "silkworm.17",  0x30000, 0x10000, CRC(3fa4563d) SHA1(46e3cc41491d63efcdda43c84c7ac1385a1926d0) )	/* tiles #2 */

	ROM_REGION( 0x8000, REGION_SOUND1, 0 )	/* ADPCM samples */
	ROM_LOAD( "silkworm.1",   0x0000, 0x8000, CRC(5b553644) SHA1(5d39d2251094c17f7b732b4861401b3516fce9b1) )
ROM_END

ROM_START( gemini )
	ROM_REGION( 0x20000, REGION_CPU1, 0 )
	ROM_LOAD( "gw04-5s.rom",  0x00000, 0x10000, CRC(ff9de855) SHA1(34167af8456a081f68b338f10d4319ce1e703fd4) )	/* c000-ffff is not used */
	ROM_LOAD( "gw05-6s.rom",  0x10000, 0x10000, CRC(5a6947a9) SHA1(18b7aeb0f0e2c396bc759118dd7c45fd6070b804) )	/* banked at f000-f7ff */

	ROM_REGION( 0x10000, REGION_CPU2, 0 )
	ROM_LOAD( "gw03-5h.rom",  0x0000, 0x8000, CRC(9bc79596) SHA1(61de9ddd45140e8ed88173294bd26147e2abfa21) )

	ROM_REGION( 0x08000, REGION_GFX1, ROMREGION_DISPOSE )
	ROM_LOAD( "gw02-3h.rom",  0x00000, 0x08000, CRC(7acc8d35) SHA1(05056e9f077e7571b314390b508c72d56ad0f43b) )	/* characters */

	ROM_REGION( 0x40000, REGION_GFX2, ROMREGION_DISPOSE )
	ROM_LOAD( "gw06-1c.rom",  0x00000, 0x10000, CRC(4ea51631) SHA1(9aee0f1ba210ac953dc193cfc739322966b6de8a) )	/* sprites */
	ROM_LOAD( "gw07-1d.rom",  0x10000, 0x10000, CRC(da42637e) SHA1(9885c52823279f26871092c77bdbe027df08268f) )	/* sprites */
	ROM_LOAD( "gw08-1f.rom",  0x20000, 0x10000, CRC(0b4e8d70) SHA1(55069f3df1c8db83f306d46b8262fd23585e6013) )	/* sprites */
	ROM_LOAD( "gw09-1h.rom",  0x30000, 0x10000, CRC(b65c5e4c) SHA1(699e1a9e72b8d94edae7382ba119fe5da113514d) )	/* sprites */

	ROM_REGION( 0x40000, REGION_GFX3, ROMREGION_DISPOSE )
	ROM_LOAD( "gw10-1n.rom",  0x00000, 0x10000, CRC(5e84cd4f) SHA1(e85320291027a16619c87fc2365448367bda454a) )	/* tiles #1 */
	ROM_LOAD( "gw11-2na.rom", 0x10000, 0x10000, CRC(08b458e1) SHA1(b3426faa57dca51dc053db44fa4968425d8bf3ee) )	/* tiles #1 */
	ROM_LOAD( "gw12-2nb.rom", 0x20000, 0x10000, CRC(229c9714) SHA1(f4f47d6b379c973c22f9ae7d7bec7041cdf3f737) )	/* tiles #1 */
	ROM_LOAD( "gw13-3n.rom",  0x30000, 0x10000, CRC(c5dfaf47) SHA1(c3202ca8c7f3c5c7dc9acdc09c1c894e168ef9fe) )	/* tiles #1 */

	ROM_REGION( 0x40000, REGION_GFX4, ROMREGION_DISPOSE )
	ROM_LOAD( "gw14-1r.rom",  0x00000, 0x10000, CRC(9c10e5b5) SHA1(a81399b85d8f3ddca26883ec3535cb9044c35ada) )	/* tiles #2 */
	ROM_LOAD( "gw15-2ra.rom", 0x10000, 0x10000, CRC(4cd18cfa) SHA1(c197a098a7c1e5220aad039383a40702fe7c4f21) )	/* tiles #2 */
	ROM_LOAD( "gw16-2rb.rom", 0x20000, 0x10000, CRC(f911c7be) SHA1(3f49f6c4734f2b644d93c4a54249aae6ff080e1d) )	/* tiles #2 */
	ROM_LOAD( "gw17-3r.rom",  0x30000, 0x10000, CRC(79a9ce25) SHA1(74e3917b8e7a920ceb2135d7ef8fb2f2c5176b21) )	/* tiles #2 */

	ROM_REGION( 0x8000, REGION_SOUND1, 0 )	/* ADPCM samples */
	ROM_LOAD( "gw01-6a.rom",  0x0000, 0x8000, CRC(d78afa05) SHA1(b02a739b045f5cddf943ce59226ef234463eeebe) )
ROM_END



/*
   video_type is used to distinguish Rygar, Silkworm and Gemini Wing.
   This is needed because there is a difference in the tile and sprite indexing.
*/
static DRIVER_INIT( rygar )    { tecmo_video_type = 0; }
static DRIVER_INIT( silkworm ) { tecmo_video_type = 1; }
static DRIVER_INIT( gemini )   { tecmo_video_type = 2; }



GAME( 1986, rygar,    0,        rygar,    rygar,    rygar,    ROT0,  "Tecmo", "Rygar (US set 1)", 0 )
GAME( 1986, rygar2,   rygar,    rygar,    rygar,    rygar,    ROT0,  "Tecmo", "Rygar (US set 2)", 0 )
GAME( 1986, rygarj,   rygar,    rygar,    rygar,    rygar,    ROT0,  "Tecmo", "Argus no Senshi (Japan)", 0 )
GAME( 1987, gemini,   0,        gemini,   gemini,   gemini,   ROT90, "Tecmo", "Gemini Wing", 0 )
GAME( 1988, silkworm, 0,        silkworm, silkworm, silkworm, ROT0,  "Tecmo", "Silk Worm (set 1)", 0 )
GAME( 1988, silkwrm2, silkworm, silkworm, silkworm, silkworm, ROT0,  "Tecmo", "Silk Worm (set 2)", 0 )
