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diff --git a/src/mame/drivers/bwidow.c b/src/mame/drivers/bwidow.c
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+/***************************************************************************
+
+ Atari Black Widow hardware
+
+ Games supported:
+ * Space Duel
+ * Black Widow
+ * Gravitar
+
+****************************************************************************
+
+ Black Widow memory map (preliminary)
+
+ 0000-04ff RAM
+ 0800 COIN_IN
+ 0a00 IN1
+ 0c00 IN2
+
+ 2000-27ff Vector generator RAM
+ 5000-7fff ROM
+
+
+
+ BLACK WIDOW SWITCH SETTINGS (Atari, 1983)
+ -----------------------------------------
+
+ -------------------------------------------------------------------------------
+ Settings of 8-Toggle Switch on Black Widow CPU PCB (at D4)
+ 8 7 6 5 4 3 2 1 Option
+ -------------------------------------------------------------------------------
+ Off Off 1 coin/1 credit <
+ On On 1 coin/2 credits
+ On Off 2 coins/1 credit
+ Off On Free play
+
+ Off Off Right coin mechanism x 1 <
+ On Off Right coin mechanism x 4
+ Off On Right coin mechanism x 5
+ On On Right coin mechanism x 6
+
+ Off Left coin mechanism x 1 <
+ On Left coin mechanism x 2
+
+ Off Off Off No bonus coins (0)* <
+ Off On On No bonus coins (6)
+ On On On No bonus coins (7)
+
+ On Off Off For every 2 coins inserted,
+ logic adds 1 more coin (1)
+ Off On Off For every 4 coins inserted,
+ logic adds 1 more coin (2)
+ On On Off For every 4 coins inserted,
+ logic adds 2 more coins (3)
+ Off Off On For every 5 coins inserted,
+ logic adds 1 more coin (4)
+ On Off On For every 3 coins inserted,
+ logic adds 1 more coin (5)
+
+ -------------------------------------------------------------------------------
+
+ * The numbers in parentheses will appear on the BONUS ADDER line in the
+ Operator Information Display (Figure 2-1) for these settings.
+ < Manufacturer's recommended setting
+
+ -------------------------------------------------------------------------------
+ Settings of 8-Toggle Switch on Black Widow CPU PCB (at B4)
+ 8 7 6 5 4 3 2 1 Option
+
+ Note: The bits are the exact opposite of the switch numbers - switch 8 is bit 0.
+ -------------------------------------------------------------------------------
+ Off Off Maximum start at level 13
+ On Off Maximum start at level 21 <
+ Off On Maximum start at level 37
+ On On Maximum start at level 53
+
+ Off Off 3 spiders per game <
+ On Off 4 spiders per game
+ Off On 5 spiders per game
+ On On 6 spiders per game
+
+ Off Off Easy game play
+ On Off Medium game play <
+ Off On Hard game play
+ On On Demonstration mode
+
+ Off Off Bonus spider every 20,000 points <
+ On Off Bonus spider every 30,000 points
+ Off On Bonus spider every 40,000 points
+ On On No bonus
+
+ -------------------------------------------------------------------------------
+
+ < Manufacturer's recommended setting
+
+
+ GRAVITAR SWITCH SETTINGS (Atari, 1982)
+ --------------------------------------
+
+ -------------------------------------------------------------------------------
+ Settings of 8-Toggle Switch on Gravitar PCB (at B4)
+ 8 7 6 5 4 3 2 1 Option
+ -------------------------------------------------------------------------------
+ Off On Free play
+ On On 1 coin for 2 credits
+ Off Off 1 coin for 1 credit <
+ On Off 2 coins for 1 credit
+
+ Off Off Right coin mechanism x 1 <
+ On Off Right coin mechanism x 4
+ Off On Right coin mechanism x 5
+ On On Right coin mechanism x 6
+
+ Off Left coin mechanism x 1 <
+ On Left coin mechanism x 2
+
+ Off Off Off No bonus coins <
+
+ Off On Off For every 4 coins inserted,
+ logic adds 1 more coin
+ On On Off For every 4 coins inserted,
+ logic adds 2 more coins
+ Off Off On For every 5 coins inserted,
+ logic adds 1 more coin
+ On Off On For every 3 coins inserted,
+ logic adds 1 more coin
+
+ Off On On No bonus coins
+ On Off Off ??? (not in manual!)
+ On On On No bonus coins
+
+ -------------------------------------------------------------------------------
+
+ < Manufacturer's recommended setting
+
+ -------------------------------------------------------------------------------
+ Settings of 8-Toggle Switch on Gravitar PCB (at D4)
+ 8 7 6 5 4 3 2 1 Option
+ -------------------------------------------------------------------------------
+ On On No bonus
+ Off Off Bonus ship every 10,000 points <
+ d d d On Off Bonus ship every 20,000 points
+ e e e Off On Bonus ship every 30,000 points
+ s s s
+ U U On U Easy game play <
+ Off Hard game play
+ t t t
+ o o Off Off o 3 ships per game
+ N N On Off N 4 ships per game <
+ Off On 5 ships per game
+ On On 6 ships per game
+
+ -------------------------------------------------------------------------------
+
+ < Manufacturer's recommended setting
+
+ Space Duel Settings
+ -------------------
+
+ (Settings of 8-Toggle Switch on Space Duel game PCB at D4)
+ Note: The bits are the exact opposite of the switch numbers - switch 8 is bit 0.
+
+ 8 7 6 5 4 3 2 1 Option
+ On Off 3 ships per game
+ Off Off 4 ships per game $
+ On On 5 ships per game
+ Off On 6 ships per game
+ On Off *Easy game difficulty
+ Off Off Normal game difficulty $
+ On On Medium game difficulty
+ Off On Hard game difficulty
+ Off Off English $
+ On Off German
+ On On Spanish
+ Off On French
+ Bonus life granted every:
+ Off On 8,000 points
+ Off Off 10,000 points
+ On Off 15,000 points
+ On On No bonus life
+
+ $Manufacturer's suggested settings
+ *Easy-In the beginning of the first wave, 3 targets appear on the
+ screen. Targets increase by one in each new wave.
+ Normal-Space station action is the same as 'Easy'. Fighter action has
+ 4 targets in the beginning of the first wave. Targets increase by 2
+ in each new wave. Targets move faster and more targets enter.
+ Medium and Hard-In the beginning of the first wave, 4 targets appear
+ on the screen. Targets increase by 2 in each new wave. As difficulty
+ increases, targets move faster, and more targets enter.
+
+
+ (Settings of 8-Toggle Switch on Space Duel game PCB at B4)
+ 8 7 6 5 4 3 2 1 Option
+ Off On Free play
+ Off Off *1 coin for 1 game (or 1 player) $
+ On On 1 coin for 2 game (or 2 players)
+ On Off 2 coins for 1 game (or 1 player)
+ Off Off Right coin mech x 1 $
+ On Off Right coin mech x 4
+ Off On Right coin mech x 5
+ On On Right coin mech x 6
+ Off Left coin mech x 1 $
+ On Left coin mech x 2
+ Off Off Off No bonus coins $
+ Off On Off For every 4 coins, game logic adds 1 more coin
+ On On Off For every 4 coins, game logic adds 2 more coin
+ Off On On For every 5 coins, game logic adds 1 more coin
+ On Off On**For every 3 coins, game logic adds 1 more coin
+
+ $Manufacturer's suggested settings
+
+ **In operator Information Display, this option displays same as no bonus.
+
+***************************************************************************/
+
+#include "driver.h"
+#include "video/vector.h"
+#include "video/avgdvg.h"
+#include "machine/atari_vg.h"
+#include "sound/pokey.h"
+#include "bzone.h"
+
+#define MASTER_CLOCK (12096000)
+#define CLOCK_3KHZ (MASTER_CLOCK / 4096)
+
+#define IN_LEFT (1 << 0)
+#define IN_RIGHT (1 << 1)
+#define IN_FIRE (1 << 2)
+#define IN_SHIELD (1 << 3)
+#define IN_THRUST (1 << 4)
+#define IN_P1 (1 << 5)
+#define IN_P2 (1 << 6)
+
+
+/*************************************
+ *
+ * Input ports
+ *
+ *************************************/
+
+/*
+
+These 7 memory locations are used to read the 2 players' controls as well
+as sharing some dipswitch info in the lower 4 bits pertaining to coins/credits
+Typically, only the high 2 bits are read.
+
+*/
+
+static READ8_HANDLER( spacduel_IN3_r )
+{
+ int res;
+ int res1;
+ int res2;
+
+ res1 = readinputportbytag("IN3");
+ res2 = readinputportbytag("IN4");
+ res = 0x00;
+
+ switch (offset & 0x07)
+ {
+ case 0:
+ if (res1 & IN_SHIELD) res |= 0x80;
+ if (res1 & IN_FIRE) res |= 0x40;
+ break;
+ case 1: /* Player 2 */
+ if (res2 & IN_SHIELD) res |= 0x80;
+ if (res2 & IN_FIRE) res |= 0x40;
+ break;
+ case 2:
+ if (res1 & IN_LEFT) res |= 0x80;
+ if (res1 & IN_RIGHT) res |= 0x40;
+ break;
+ case 3: /* Player 2 */
+ if (res2 & IN_LEFT) res |= 0x80;
+ if (res2 & IN_RIGHT) res |= 0x40;
+ break;
+ case 4:
+ if (res1 & IN_THRUST) res |= 0x80;
+ if (res1 & IN_P1) res |= 0x40;
+ break;
+ case 5: /* Player 2 */
+ if (res2 & IN_THRUST) res |= 0x80;
+ break;
+ case 6:
+ if (res1 & IN_P2) res |= 0x80;
+ break;
+ case 7:
+ res = (0x00 /* upright */ | (0 & 0x40));
+ break;
+ }
+
+ return res;
+}
+
+
+
+/*************************************
+ *
+ * Output ports
+ *
+ *************************************/
+
+static WRITE8_HANDLER( bwidow_misc_w )
+{
+ /*
+ 0x10 = p1 led
+ 0x20 = p2 led
+ 0x01 = coin counter 1
+ 0x02 = coin counter 2
+ */
+ static int lastdata;
+
+ if (data == lastdata) return;
+ set_led_status(0,~data & 0x10);
+ set_led_status(1,~data & 0x20);
+ coin_counter_w(0, data & 0x01);
+ coin_counter_w(1, data & 0x02);
+ lastdata = data;
+}
+
+/*************************************
+ *
+ * Interrupt ack
+ *
+ *************************************/
+
+static WRITE8_HANDLER( irq_ack_w )
+{
+ cpunum_set_input_line(0, 0, CLEAR_LINE);
+}
+
+
+/*************************************
+ *
+ * Main CPU memory handlers
+ *
+ *************************************/
+
+static ADDRESS_MAP_START( bwidow_map, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x07ff) AM_RAM
+ AM_RANGE(0x2000, 0x27ff) AM_RAM AM_BASE(&vectorram) AM_SIZE(&vectorram_size) AM_REGION(REGION_CPU1, 0x2000)
+ AM_RANGE(0x2800, 0x5fff) AM_ROM
+ AM_RANGE(0x6000, 0x67ff) AM_READWRITE(pokey1_r, pokey1_w)
+ AM_RANGE(0x6800, 0x6fff) AM_READWRITE(pokey2_r, pokey2_w)
+ AM_RANGE(0x7000, 0x7000) AM_READ(atari_vg_earom_r)
+ AM_RANGE(0x7800, 0x7800) AM_READ(bzone_IN0_r) /* IN0 */
+ AM_RANGE(0x8000, 0x8000) AM_READ(input_port_3_r) /* IN1 */
+ AM_RANGE(0x8800, 0x8800) AM_READ(input_port_4_r) /* IN1 */
+ AM_RANGE(0x8800, 0x8800) AM_WRITE(bwidow_misc_w) /* coin counters, leds */
+ AM_RANGE(0x8840, 0x8840) AM_WRITE(avgdvg_go_w)
+ AM_RANGE(0x8880, 0x8880) AM_WRITE(avgdvg_reset_w)
+ AM_RANGE(0x88c0, 0x88c0) AM_WRITE(irq_ack_w) /* interrupt acknowledge */
+ AM_RANGE(0x8900, 0x8900) AM_WRITE(atari_vg_earom_ctrl_w)
+ AM_RANGE(0x8940, 0x897f) AM_WRITE(atari_vg_earom_w)
+ AM_RANGE(0x8980, 0x89ed) AM_WRITE(MWA8_NOP) /* watchdog clear */
+ AM_RANGE(0x9000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+
+static ADDRESS_MAP_START( spacduel_map, ADDRESS_SPACE_PROGRAM, 8 )
+ AM_RANGE(0x0000, 0x03ff) AM_RAM
+ AM_RANGE(0x0800, 0x0800) AM_READ(bzone_IN0_r) /* IN0 */
+ AM_RANGE(0x0900, 0x0907) AM_READ(spacduel_IN3_r) /* IN1 */
+ AM_RANGE(0x0905, 0x0906) AM_WRITE(MWA8_NOP) /* ignore? */
+ AM_RANGE(0x0a00, 0x0a00) AM_READ(atari_vg_earom_r)
+// AM_RANGE(0x0c00, 0x0c00) AM_WRITE(coin_counter_w) /* coin out */
+ AM_RANGE(0x0c80, 0x0c80) AM_WRITE(avgdvg_go_w)
+ AM_RANGE(0x0d00, 0x0d00) AM_WRITE(MWA8_NOP) /* watchdog clear */
+ AM_RANGE(0x0d80, 0x0d80) AM_WRITE(avgdvg_reset_w)
+ AM_RANGE(0x0e00, 0x0e00) AM_WRITE(irq_ack_w) /* interrupt acknowledge */
+ AM_RANGE(0x0e80, 0x0e80) AM_WRITE(atari_vg_earom_ctrl_w)
+ AM_RANGE(0x0f00, 0x0f3f) AM_WRITE(atari_vg_earom_w)
+ AM_RANGE(0x1000, 0x100f) AM_READWRITE(pokey1_r, pokey1_w)
+ AM_RANGE(0x1400, 0x140f) AM_READWRITE(pokey2_r, pokey2_w)
+ AM_RANGE(0x2000, 0x27ff) AM_RAM AM_BASE(&vectorram) AM_SIZE(&vectorram_size) AM_REGION(REGION_CPU1, 0x2000)
+ AM_RANGE(0x2800, 0x3fff) AM_ROM
+ AM_RANGE(0x4000, 0xffff) AM_ROM
+ADDRESS_MAP_END
+
+
+
+/*************************************
+ *
+ * Port definitions
+ *
+ *************************************/
+
+static INPUT_PORTS_START( bwidow )
+ PORT_START_TAG("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN2 ) // To fit "Coin B" Dip Switch
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN1 ) // To fit "Coin A" Dip Switch
+ PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("Diagnostic Step") PORT_CODE(KEYCODE_F1)
+ /* bit 6 is the VG HALT bit. We set it to "low" */
+ /* per default (busy vector processor). */
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL )
+ /* bit 7 is tied to a 3kHz clock */
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )
+
+ PORT_START_TAG("DSW0")
+ PORT_DIPNAME(0x03, 0x00, DEF_STR( Coinage ) )
+ PORT_DIPSETTING ( 0x01, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING ( 0x03, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING ( 0x02, DEF_STR( Free_Play ) )
+ PORT_DIPNAME(0x0c, 0x00, DEF_STR( Coin_B ) )
+ PORT_DIPSETTING ( 0x00, "*1" )
+ PORT_DIPSETTING ( 0x04, "*4" )
+ PORT_DIPSETTING ( 0x08, "*5" )
+ PORT_DIPSETTING ( 0x0c, "*6" )
+ PORT_DIPNAME(0x10, 0x00, DEF_STR( Coin_A ) )
+ PORT_DIPSETTING ( 0x00, "*1" )
+ PORT_DIPSETTING ( 0x10, "*2" )
+ PORT_DIPNAME(0xe0, 0x00, "Bonus Coins" )
+ PORT_DIPSETTING ( 0x80, "1 each 5" )
+ PORT_DIPSETTING ( 0x60, "2 each 4" )
+ PORT_DIPSETTING ( 0x40, "1 each 4" )
+ PORT_DIPSETTING ( 0xa0, "1 each 3" )
+ PORT_DIPSETTING ( 0x20, "1 each 2" )
+ PORT_DIPSETTING ( 0x00, DEF_STR( None ) )
+
+ PORT_START_TAG("DSW1")
+ PORT_DIPNAME(0x03, 0x01, "Max Start" )
+ PORT_DIPSETTING ( 0x00, "Lev 13" )
+ PORT_DIPSETTING ( 0x01, "Lev 21" )
+ PORT_DIPSETTING ( 0x02, "Lev 37" )
+ PORT_DIPSETTING ( 0x03, "Lev 53" )
+ PORT_DIPNAME(0x0c, 0x00, DEF_STR( Lives ) )
+ PORT_DIPSETTING ( 0x00, "3" )
+ PORT_DIPSETTING ( 0x04, "4" )
+ PORT_DIPSETTING ( 0x08, "5" )
+ PORT_DIPSETTING ( 0x0c, "6" )
+ PORT_DIPNAME(0x30, 0x10, DEF_STR( Difficulty ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING ( 0x10, DEF_STR( Medium ) )
+ PORT_DIPSETTING ( 0x20, DEF_STR( Hard ) )
+ PORT_DIPSETTING ( 0x30, "Demo" )
+ PORT_DIPNAME(0xc0, 0x00, DEF_STR( Bonus_Life ) )
+ PORT_DIPSETTING ( 0x00, "20000" )
+ PORT_DIPSETTING ( 0x40, "30000" )
+ PORT_DIPSETTING ( 0x80, "40000" )
+ PORT_DIPSETTING ( 0xc0, DEF_STR( None ) )
+
+ PORT_START_TAG("IN3") /* IN3 - Movement joystick */
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICKLEFT_RIGHT ) PORT_8WAY
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICKLEFT_LEFT ) PORT_8WAY
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICKLEFT_DOWN ) PORT_8WAY
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICKLEFT_UP ) PORT_8WAY
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START_TAG("IN4") /* IN4 - Firing joystick */
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_RIGHT ) PORT_8WAY
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_LEFT ) PORT_8WAY
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_DOWN ) PORT_8WAY
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICKRIGHT_UP ) PORT_8WAY
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+
+static INPUT_PORTS_START( gravitar )
+ PORT_START_TAG("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN2 ) // To fit "Coin B" Dip Switch
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN1 ) // To fit "Coin A" Dip Switch
+ PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("Diagnostic Step") PORT_CODE(KEYCODE_F1)
+ /* bit 6 is the VG HALT bit. We set it to "low" */
+ /* per default (busy vector processor). */
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL )
+ /* bit 7 is tied to a 3kHz clock */
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )
+
+ PORT_START_TAG("DSW0")
+ PORT_BIT( 0x03, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_DIPNAME(0x0c, 0x04, DEF_STR( Lives ) )
+ PORT_DIPSETTING ( 0x00, "3" )
+ PORT_DIPSETTING ( 0x04, "4" )
+ PORT_DIPSETTING ( 0x08, "5" )
+ PORT_DIPSETTING ( 0x0c, "6" )
+ PORT_DIPNAME(0x10, 0x00, DEF_STR( Difficulty ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( Easy ) )
+ PORT_DIPSETTING ( 0x10, DEF_STR( Hard ) )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_DIPNAME(0xc0, 0x00, DEF_STR( Bonus_Life ) )
+ PORT_DIPSETTING ( 0x00, "10000" )
+ PORT_DIPSETTING ( 0x40, "20000" )
+ PORT_DIPSETTING ( 0x80, "30000" )
+ PORT_DIPSETTING ( 0xc0, DEF_STR( None ) )
+
+ PORT_START_TAG("DSW1")
+ PORT_DIPNAME(0x03, 0x00, DEF_STR( Coinage ) )
+ PORT_DIPSETTING ( 0x01, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING ( 0x03, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING ( 0x02, DEF_STR( Free_Play ) )
+ PORT_DIPNAME(0x0c, 0x00, DEF_STR( Coin_B ) )
+ PORT_DIPSETTING ( 0x00, "*1" )
+ PORT_DIPSETTING ( 0x04, "*4" )
+ PORT_DIPSETTING ( 0x08, "*5" )
+ PORT_DIPSETTING ( 0x0c, "*6" )
+ PORT_DIPNAME(0x10, 0x00, DEF_STR( Coin_A ) )
+ PORT_DIPSETTING ( 0x00, "*1" )
+ PORT_DIPSETTING ( 0x10, "*2" )
+ PORT_DIPNAME(0xe0, 0x00, "Bonus Coins" )
+ PORT_DIPSETTING ( 0x80, "1 each 5" )
+ PORT_DIPSETTING ( 0x60, "2 each 4" )
+ PORT_DIPSETTING ( 0x40, "1 each 4" )
+ PORT_DIPSETTING ( 0xa0, "1 each 3" )
+ PORT_DIPSETTING ( 0x20, "1 each 2" )
+ PORT_DIPSETTING ( 0x00, DEF_STR( None ) )
+
+ PORT_START_TAG("IN3")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON3 )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON2 )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START_TAG("IN4")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+
+static INPUT_PORTS_START( lunarbat )
+ PORT_START_TAG("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN2 ) // To be similar with other games
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN1 ) // To be similar with other games
+ PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_UNKNOWN )
+ /* bit 6 is the VG HALT bit. We set it to "low" */
+ /* per default (busy vector processor). */
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL )
+ /* bit 7 is tied to a 3kHz clock */
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )
+
+ PORT_START_TAG("DSW0") /* DSW0 - Not read */
+ PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START_TAG("DSW1") /* DSW1 - Not read */
+ PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START_TAG("IN3")
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 )
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON3 )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON2 )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_START1 )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_START2 )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START_TAG("IN4") /* IN4 - Not read */
+ PORT_BIT( 0xff, IP_ACTIVE_LOW, IPT_UNUSED )
+INPUT_PORTS_END
+
+
+static INPUT_PORTS_START( spacduel )
+ PORT_START_TAG("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_COIN2 ) // To fit "Coin B" Dip Switch
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_COIN1 ) // To fit "Coin A" Dip Switch
+ PORT_BIT( 0x0c, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_SERVICE( 0x10, IP_ACTIVE_LOW )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_SERVICE ) PORT_NAME("Diagnostic Step") PORT_CODE(KEYCODE_F1)
+ /* bit 6 is the VG HALT bit. We set it to "low" */
+ /* per default (busy vector processor). */
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_SPECIAL )
+ /* bit 7 is tied to a 3kHz clock */
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_SPECIAL )
+
+ PORT_START_TAG("DSW0")
+ PORT_DIPNAME(0x03, 0x01, DEF_STR( Lives ) )
+ PORT_DIPSETTING ( 0x01, "3" )
+ PORT_DIPSETTING ( 0x00, "4" )
+ PORT_DIPSETTING ( 0x03, "5" )
+ PORT_DIPSETTING ( 0x02, "6" )
+ PORT_DIPNAME(0x0c, 0x00, DEF_STR( Difficulty ) )
+ PORT_DIPSETTING ( 0x04, DEF_STR( Easy ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( Normal ) )
+ PORT_DIPSETTING ( 0x0c, DEF_STR( Medium ) )
+ PORT_DIPSETTING ( 0x08, DEF_STR( Hard ) )
+ PORT_DIPNAME(0x30, 0x00, DEF_STR( Language ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( English ) )
+ PORT_DIPSETTING ( 0x10, DEF_STR( German ) )
+ PORT_DIPSETTING ( 0x20, DEF_STR( French ) )
+ PORT_DIPSETTING ( 0x30, DEF_STR( Spanish ) )
+ PORT_DIPNAME(0xc0, 0x00, DEF_STR( Bonus_Life ) )
+ PORT_DIPSETTING ( 0xc0, "8000" )
+ PORT_DIPSETTING ( 0x00, "10000" )
+ PORT_DIPSETTING ( 0x40, "15000" )
+ PORT_DIPSETTING ( 0x80, DEF_STR( None ) )
+
+ PORT_START_TAG("DSW1")
+ PORT_DIPNAME(0x03, 0x00, DEF_STR( Coinage ) )
+ PORT_DIPSETTING ( 0x01, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING ( 0x00, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING ( 0x03, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING ( 0x02, DEF_STR( Free_Play ) )
+ PORT_DIPNAME(0x0c, 0x00, DEF_STR( Coin_B ) )
+ PORT_DIPSETTING ( 0x00, "*1" )
+ PORT_DIPSETTING ( 0x04, "*4" )
+ PORT_DIPSETTING ( 0x08, "*5" )
+ PORT_DIPSETTING ( 0x0c, "*6" )
+ PORT_DIPNAME(0x10, 0x00, DEF_STR( Coin_A ) )
+ PORT_DIPSETTING ( 0x00, "*1" )
+ PORT_DIPSETTING ( 0x10, "*2" )
+ PORT_DIPNAME(0xe0, 0x00, "Bonus Coins" )
+ PORT_DIPSETTING ( 0x80, "1 each 5" )
+ PORT_DIPSETTING ( 0x60, "2 each 4" )
+ PORT_DIPSETTING ( 0x40, "1 each 4" )
+ PORT_DIPSETTING ( 0xa0, "1 each 3" )
+ PORT_DIPSETTING ( 0x20, "1 each 2" )
+ PORT_DIPSETTING ( 0x00, DEF_STR( None ) )
+
+ /* See machine/spacduel.c for more info on these 2 ports */
+ PORT_START_TAG("IN3") /* IN3 - Player 1 - spread over 8 memory locations */
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(1)
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(1)
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1)
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_PLAYER(1)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(1)
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_START1 ) PORT_NAME("Start")
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_START2 ) PORT_NAME("Select")
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+
+ PORT_START_TAG("IN4") /* IN4 - Player 2 - spread over 8 memory locations */
+ PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_PLAYER(2)
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_PLAYER(2)
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2)
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_PLAYER(2)
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_BUTTON3 ) PORT_PLAYER(2)
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
+INPUT_PORTS_END
+
+
+
+/*************************************
+ *
+ * Sound interfaces
+ *
+ *************************************/
+
+static struct POKEYinterface pokey_interface_1 =
+{
+ { 0 },
+ input_port_1_r
+};
+
+
+static struct POKEYinterface pokey_interface_2 =
+{
+ { 0 },
+ input_port_2_r
+};
+
+
+
+/*************************************
+ *
+ * Machine drivers
+ *
+ *************************************/
+
+static MACHINE_DRIVER_START( bwidow )
+
+ /* basic machine hardware */
+ MDRV_CPU_ADD_TAG("main", M6502, MASTER_CLOCK / 8)
+ MDRV_CPU_PROGRAM_MAP(bwidow_map,0)
+ MDRV_CPU_PERIODIC_INT(irq0_line_assert, (double)MASTER_CLOCK / 4096 / 12)
+
+ MDRV_SCREEN_REFRESH_RATE(60)
+ MDRV_SCREEN_VBLANK_TIME(DEFAULT_60HZ_VBLANK_DURATION)
+
+ MDRV_NVRAM_HANDLER(atari_vg)
+
+ /* video hardware */
+ MDRV_VIDEO_ATTRIBUTES(VIDEO_TYPE_VECTOR )
+ MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB15)
+ MDRV_SCREEN_SIZE(400, 300)
+ MDRV_SCREEN_VISIBLE_AREA(0, 480, 0, 440)
+ MDRV_PALETTE_LENGTH(32768)
+
+ MDRV_VIDEO_START(avg)
+ MDRV_VIDEO_UPDATE(vector)
+
+ /* sound hardware */
+ MDRV_SPEAKER_STANDARD_MONO("mono")
+
+ MDRV_SOUND_ADD(POKEY, MASTER_CLOCK / 8)
+ MDRV_SOUND_CONFIG(pokey_interface_1)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+
+ MDRV_SOUND_ADD(POKEY, MASTER_CLOCK / 8)
+ MDRV_SOUND_CONFIG(pokey_interface_2)
+ MDRV_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.50)
+MACHINE_DRIVER_END
+
+
+static MACHINE_DRIVER_START( gravitar )
+
+ /* basic machine hardware */
+ MDRV_IMPORT_FROM(bwidow)
+
+ /* video hardware */
+ MDRV_SCREEN_VISIBLE_AREA(0, 420, 0, 400)
+MACHINE_DRIVER_END
+
+
+static MACHINE_DRIVER_START( lunarbat )
+
+ /* basic machine hardware */
+ MDRV_IMPORT_FROM(gravitar)
+ MDRV_CPU_MODIFY("main")
+ MDRV_CPU_PROGRAM_MAP(spacduel_map,0)
+
+ MDRV_SCREEN_REFRESH_RATE(45)
+
+ /* video hardware */
+ MDRV_SCREEN_VISIBLE_AREA(0, 500, 0, 440)
+MACHINE_DRIVER_END
+
+
+static MACHINE_DRIVER_START( spacduel )
+
+ /* basic machine hardware */
+ MDRV_IMPORT_FROM(gravitar)
+ MDRV_CPU_MODIFY("main")
+ MDRV_CPU_PROGRAM_MAP(spacduel_map,0)
+
+ MDRV_SCREEN_REFRESH_RATE(45)
+
+ /* video hardware */
+ MDRV_SCREEN_VISIBLE_AREA(0, 540, 0, 400)
+MACHINE_DRIVER_END
+
+
+
+/*************************************
+ *
+ * ROM definitions
+ *
+ *************************************/
+
+ROM_START( bwidow )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "136017.107", 0x2800, 0x0800, CRC(97f6000c) SHA1(bbae93058228820ee67b05f23e45fb54ee0963ff) )
+ ROM_LOAD( "136017.108", 0x3000, 0x1000, CRC(3da354ed) SHA1(935295d66ad40ad702eb7a694296e836f53d22ec) )
+ ROM_LOAD( "136017.109", 0x4000, 0x1000, CRC(2fc4ce79) SHA1(2b324877bf55151747eaacd9a58f846712bfbc14) )
+ ROM_LOAD( "136017.110", 0x5000, 0x1000, CRC(0dd52987) SHA1(72aa1d24f20cc86701189df486488edc434b1be1) )
+ /* Program ROM */
+ ROM_LOAD( "136017.101", 0x9000, 0x1000, CRC(fe3febb7) SHA1(b62f7622ca60248e1b8376ee135ae3d94d0b4437) )
+ ROM_LOAD( "136017.102", 0xa000, 0x1000, CRC(10ad0376) SHA1(614c74daa468a7430ed965a3a9d07b6ad846016c) )
+ ROM_LOAD( "136017.103", 0xb000, 0x1000, CRC(8a1430ee) SHA1(3aa6c40721a4289c1cf01f37c89b6b0a96336c68) )
+ ROM_LOAD( "136017.104", 0xc000, 0x1000, CRC(44f9943f) SHA1(e83d8242e4592149719be6a68cf3aba46116072f) )
+ ROM_LOAD( "136017.105", 0xd000, 0x1000, CRC(1fdf801c) SHA1(33da2ba3cefa3d0dddc8647f9b6caf5d5bfe9b3b) )
+ ROM_LOAD( "136017.106", 0xe000, 0x1000, CRC(ccc9b26c) SHA1(f1398e3ff2b62af1509bc117028845b671ff1ca2) )
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+ROM_START( gravitar )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "136010.210", 0x2800, 0x0800, CRC(debcb243) SHA1(2c50cd38d60739c126f1d0d8e7fbd46a0bde6e1c) )
+ ROM_LOAD( "136010.207", 0x3000, 0x1000, CRC(4135629a) SHA1(301ddb7a34b38140a1fdffc060cb08ff57f10cf1) )
+ ROM_LOAD( "136010.208", 0x4000, 0x1000, CRC(358f25d9) SHA1(9c2920cf2b73a93ac2808be654b08505037f53b1) )
+ ROM_LOAD( "136010.309", 0x5000, 0x1000, CRC(4ac78df4) SHA1(5164f2a54244ce1e863d1ec0dd29bc9da7103a85) )
+ /* Program ROM */
+ ROM_LOAD( "136010.301", 0x9000, 0x1000, CRC(a2a55013) SHA1(800b52ead9f56a3e372797fbc698c8fc791398da) )
+ ROM_LOAD( "136010.302", 0xa000, 0x1000, CRC(d3700b3c) SHA1(b9e846db14fa23f8d2def97030d8b072b2bbc0be) )
+ ROM_LOAD( "136010.303", 0xb000, 0x1000, CRC(8e12e3e0) SHA1(e09f58f6f36de6bf6724a1ab14ab35acbb0b3876) )
+ ROM_LOAD( "136010.304", 0xc000, 0x1000, CRC(467ad5da) SHA1(822b06be6f2d6298b2b10161fbabbb2caa74b2ef) )
+ ROM_LOAD( "136010.305", 0xd000, 0x1000, CRC(840603af) SHA1(4a7124f91d3ee940686c51374a861efe6cb5d282) )
+ ROM_LOAD( "136010.306", 0xe000, 0x1000, CRC(3f3805ad) SHA1(baf080deaa8eea43af2f3be71dacc63e4666c453) )
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+ROM_START( gravitr2 )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "136010.210", 0x2800, 0x0800, CRC(debcb243) SHA1(2c50cd38d60739c126f1d0d8e7fbd46a0bde6e1c) )
+ ROM_LOAD( "136010.207", 0x3000, 0x1000, CRC(4135629a) SHA1(301ddb7a34b38140a1fdffc060cb08ff57f10cf1) )
+ ROM_LOAD( "136010.208", 0x4000, 0x1000, CRC(358f25d9) SHA1(9c2920cf2b73a93ac2808be654b08505037f53b1) )
+ ROM_LOAD( "136010.209", 0x5000, 0x1000, CRC(37034287) SHA1(4de7478fb566fd75f99533507228611cecb1f11a) )
+ /* Program ROM */
+ ROM_LOAD( "136010.201", 0x9000, 0x1000, CRC(167315e4) SHA1(35613e5a503fac7f451c201675669f417e15241b) )
+ ROM_LOAD( "136010.202", 0xa000, 0x1000, CRC(aaa9e62c) SHA1(87fc660adb22f812a764efc46ffcf5f934d5e333) )
+ ROM_LOAD( "136010.203", 0xb000, 0x1000, CRC(ae437253) SHA1(e2402dc5fa755a05fa1d531a31b78e39e67f5cbe) )
+ ROM_LOAD( "136010.204", 0xc000, 0x1000, CRC(5d6bc29e) SHA1(fdd442644209ab858eb4ed1b4cdeb1db26f80108) )
+ ROM_LOAD( "136010.205", 0xd000, 0x1000, CRC(0db1ff34) SHA1(288d9ffff9d18025621be249ea25a7444f58f3a9) )
+ ROM_LOAD( "136010.206", 0xe000, 0x1000, CRC(4521ca48) SHA1(5770cb46c4ac28d632ad5910723a9edda8283ce5) )
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+ROM_START( gravp )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "l7.bin", 0x2800, 0x0800, CRC(1da0d845) SHA1(99bccae0521c105388784175c475035bf19270a7) )
+ ROM_LOAD( "mn7.bin", 0x3000, 0x1000, CRC(650ba31e) SHA1(7f855ea13e2041a87b64fdff4b7ee0d7d97e4401) )
+ ROM_LOAD( "np7.bin", 0x4000, 0x1000, CRC(5119c0b2) SHA1(ec8a7072d2b8e2626a19c0451ea5ddb27ad80594) )
+ ROM_LOAD( "r7.bin", 0x5000, 0x1000, CRC(defa8cbc) SHA1(ffd618d846c219fb641311f1d95ffc9f6fb5a240) )
+ /* Program ROM */
+ ROM_LOAD( "d1.bin", 0x9000, 0x1000, CRC(acbc0e2c) SHA1(2e0ff3b7ac9c0813e71942492146372bba382f1f) )
+ ROM_LOAD( "ef1.bin", 0xa000, 0x1000, CRC(88f98f8f) SHA1(c2174deed61ae8519a02c2ac8e2969f357733cfd) )
+ ROM_LOAD( "h1.bin", 0xb000, 0x1000, CRC(68a85703) SHA1(8a7956578cb6ebbeb74facedcbcb46f86ec92000) )
+ ROM_LOAD( "j1.bin", 0xc000, 0x1000, CRC(33d19ef6) SHA1(68f95e237427959d6ef64a5b4dd1e03db7389271) )
+ ROM_LOAD( "kl1.bin", 0xd000, 0x1000, CRC(032b5806) SHA1(b719792a177e74ec49e6952e445b9cdeaca7505f) )
+ ROM_LOAD( "m1.bin", 0xe000, 0x1000, CRC(47fe97a0) SHA1(7cbde4b59abde679c28d7547700b342f25762e4a) )
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+ROM_START( lunarbat )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "010.010", 0x2800, 0x0800, CRC(48fd38aa) SHA1(e6ec31e784c2965369161c33d00903ba027f7f20) )
+ ROM_LOAD( "007.010", 0x3000, 0x1000, CRC(9754830e) SHA1(2e6885155a93d4eaf9a405f3eb740f2f4b30bc23) )
+ ROM_LOAD( "008.010", 0x4000, 0x1000, CRC(084aa8db) SHA1(80050f981b9a673d336bbcf712faf21b7be7e042) )
+ /* Program ROM */
+ ROM_LOAD( "001.010", 0x9000, 0x1000, CRC(cd7e1780) SHA1(92265a548485d140b73ef542ad66dc32cb52d42b) )
+ ROM_LOAD( "002.010", 0xa000, 0x1000, CRC(dc813a54) SHA1(c543cae3a3ba5b00e5a8714a42b2557bc6e730cf) )
+ ROM_LOAD( "003.010", 0xb000, 0x1000, CRC(8e1fecd3) SHA1(a43cb4ea77e095227590fcefa778688093dcf135) )
+ ROM_LOAD( "004.010", 0xc000, 0x1000, CRC(c407764f) SHA1(f202a9fe6c10975bb124b4b1e902341da578da8f) )
+ ROM_LOAD( "005.010", 0xd000, 0x1000, CRC(4feb6f81) SHA1(b852f1093e56343225c1b2b2554a93c88fc58637) )
+ ROM_LOAD( "006.010", 0xe000, 0x1000, CRC(f8ad139d) SHA1(e9e0dcb0872b19af09825a979f8b3747c9632091) )
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+ROM_START( lunarba1 )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "vrom1.bin", 0x2800, 0x0800, CRC(c60634d9) SHA1(b94f056b5e73a2e015ba9a4be66dc2abee325016) )
+ ROM_LOAD( "vrom2.bin", 0x3000, 0x1000, CRC(53d9a8a2) SHA1(c33766658dd3523e99e664ef42a4ba4ab884fa80) )
+ /* Program ROM */
+ ROM_LOAD( "rom0.bin", 0x4000, 0x1000, CRC(cc4691c6) SHA1(72f75c75ec3f36c5c455c82593659961b5882f9f) )
+ ROM_LOAD( "rom1.bin", 0x5000, 0x1000, CRC(4df71d07) SHA1(5d71750594885641fb347bf4106b3b6ace822fb9) )
+ ROM_LOAD( "rom2.bin", 0x6000, 0x1000, CRC(c6ff04cb) SHA1(33477abacb9dfeadca20f9b9c1c2840cf31be7c3) )
+ ROM_LOAD( "rom3.bin", 0x7000, 0x1000, CRC(a7dc9d1b) SHA1(991f5b943f5c82027deadda0c4230b70f2a8ca10) )
+ ROM_LOAD( "rom4.bin", 0x8000, 0x1000, CRC(788bf976) SHA1(4dc2d92bbd232625fd8e828c876c4182ddde125d) )
+ ROM_LOAD( "rom5.bin", 0x9000, 0x1000, CRC(16121e13) SHA1(9ef59f4ffc22d5f9457b57d2f3a67d883995be98) )
+ ROM_RELOAD( 0xa000, 0x1000 )
+ ROM_RELOAD( 0xb000, 0x1000 )
+ ROM_RELOAD( 0xc000, 0x1000 )
+ ROM_RELOAD( 0xd000, 0x1000 )
+ ROM_RELOAD( 0xe000, 0x1000 )
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+ROM_START( spacduel )
+ ROM_REGION( 0x10000, REGION_CPU1, 0 )
+ /* Vector ROM */
+ ROM_LOAD( "136006.106", 0x2800, 0x0800, CRC(691122fe) SHA1(f53be76a49dba319050ca7767de3441521910e83) )
+ ROM_LOAD( "136006.107", 0x3000, 0x1000, CRC(d8dd0461) SHA1(58060b20b2511d30d2ec06479d21840bdd0b53c6) )
+ /* Program ROM */
+ ROM_LOAD( "136006.201", 0x4000, 0x1000, CRC(f4037b6e) SHA1(9bacb64d257edd31f53db878477604f50681d78f) )
+ ROM_LOAD( "136006.102", 0x5000, 0x1000, CRC(4c451e8a) SHA1(c05c52bb08acccb60950a15f05c960c3bc163d3e) )
+ ROM_LOAD( "136006.103", 0x6000, 0x1000, CRC(ee72da63) SHA1(d36d62cdf7fe76ee9cdbfc2e76ac5d90f22986ba) )
+ ROM_LOAD( "136006.104", 0x7000, 0x1000, CRC(e41b38a3) SHA1(9e8773e78d65d74db824cfd7108e7038f26757db) )
+ ROM_LOAD( "136006.105", 0x8000, 0x1000, CRC(5652710f) SHA1(b15891d22a47ac3448d2ced40c04d0ab80606c7d) )
+ ROM_RELOAD( 0x9000, 0x1000 )
+ ROM_RELOAD( 0xa000, 0x1000 )
+ ROM_RELOAD( 0xb000, 0x1000 )
+ ROM_RELOAD( 0xc000, 0x1000 )
+ ROM_RELOAD( 0xd000, 0x1000 )
+ ROM_RELOAD( 0xe000, 0x1000 )
+
+ ROM_RELOAD( 0xf000, 0x1000 ) /* for reset/interrupt vectors */
+ /* AVG PROM */
+ ROM_REGION( 0x100, REGION_USER1, 0 )
+ ROM_LOAD( "136002-125.n4", 0x0000, 0x0100, CRC(5903af03) SHA1(24bc0366f394ad0ec486919212e38be0f08d0239) )
+ROM_END
+
+
+
+/*************************************
+ *
+ * Game drivers
+ *
+ *************************************/
+
+GAME( 1980, spacduel, 0, spacduel, spacduel, 0, ROT0, "Atari", "Space Duel", 0 )
+GAME( 1982, bwidow, 0, bwidow, bwidow, 0, ROT0, "Atari", "Black Widow", 0 )
+GAME( 1982, gravitar, 0, gravitar, gravitar, 0, ROT0, "Atari", "Gravitar (version 3)", 0 )
+GAME( 1982, gravitr2, gravitar, gravitar, gravitar, 0, ROT0, "Atari", "Gravitar (version 2)", 0 )
+GAME( 1982, gravp, gravitar, gravitar, gravitar, 0, ROT0, "Atari", "Gravitar (prototype)", 0 )
+GAME( 1982, lunarbat, gravitar, gravitar, gravitar, 0, ROT0, "Atari", "Lunar Battle (prototype, later)", 0 )
+GAME( 1982, lunarba1, gravitar, lunarbat, lunarbat, 0, ROT0, "Atari", "Lunar Battle (prototype, earlier)", 0 )