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

    Astro Fighter hardware

    driver by Lee Taylor 28/11/1997

    Games supported:
        * Astro Fighter (3 sets)
        * Astro Battle (2 sets)
        * Astro Fire
        * Astro Combat (2 sets)
        * Super Star Battle
        * Space Fighter Mark II (2 sets)
        * Tomahawk 777 late version with changed game play
        * Tomahawk 777 early version

    Notes:
        * Astro Battle added by HIGHWAYMAN with help from Reip.
          2 sets, 1 may be a bad set, or they may simply be different - don't know yet.
          protection involves the EPROM datalines being routed through an 8bit x 256byte PROM.
          it *may* have a more complex palette, it needs to be investigated when i get more time.

        * Astro Fighter set differences:

          The differences are minor. From newest to oldest:

          Main Set: 16Kbit ROMs
                    Green/Hollow empty fuel bar.
                    60 points for every bomb destroyed.

          Set 2:    8Kbit ROMs
                    Blue/Solid empty fuel bar.
                    60 points for every bomb destroyed.

          Set 3:    8Kbit ROMs
                    Blue/Solid empty fuel bar.
                   300 points for every seven bombs destroyed.

        * I know there must be at least one other ROM set for Astro Fighter
          I have played one that stoped between waves to show the next enemy

    Known issues/to-do's:
        * Is Astro Fighter supposed to have a blue background???
        * Analog sound in all games

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


#include "driver.h"
#include "cpu/m6502/m6502.h"
#include "astrof.h"


#define MASTER_CLOCK  		(XTAL_10_595MHz)
#define MAIN_CPU_CLOCK  	(MASTER_CLOCK / 16)
#define PIXEL_CLOCK  		(MASTER_CLOCK / 2)
#define HTOTAL				(0x150)
#define HBEND				(0x000)
#define HBSTART				(0x100)
#define VTOTAL				(0x118)
#define VBEND				(0x000)
#define VBSTART				(0x100)



static UINT8 *astrof_videoram;
static size_t astrof_videoram_size;
static UINT8 *astrof_colorram;
static UINT8 *tomahawk_protection;

static UINT8 *astrof_color;
static UINT8 astrof_palette_bank;
static UINT8 red_on;
static UINT8 flipscreen;
static UINT8 screen_off;

static UINT16 abattle_count;



/*************************************
 *
 *  IRQ generation
 *
 *************************************/

static READ8_HANDLER( irq_clear_r )
{
	cpu_set_input_line(space->machine->cpu[0], 0, CLEAR_LINE);

	return 0;
}


static TIMER_DEVICE_CALLBACK( irq_callback )
{
	cpu_set_input_line(timer->machine->cpu[0], 0, ASSERT_LINE);
}



/*************************************
 *
 *  Input handling
 *
 *************************************/

static INPUT_CHANGED( coin_inserted )
{
	/* coin insertion causes an NMI */
	cpu_set_input_line(field->port->machine->cpu[0], INPUT_LINE_NMI, newval ? ASSERT_LINE : CLEAR_LINE);
	coin_counter_w(0, newval);
}


static INPUT_CHANGED( service_coin_inserted )
{
	/* service coin insertion causes an NMI */
	cpu_set_input_line(field->port->machine->cpu[0], INPUT_LINE_NMI, newval ? ASSERT_LINE : CLEAR_LINE);
}


static CUSTOM_INPUT( astrof_p1_controls_r )
{
	return input_port_read(field->port->machine, "P1");
}


static CUSTOM_INPUT( astrof_p2_controls_r )
{
	UINT32 ret;

	/* on an upright cabinet, a single set of controls
       is connected to both sets of pins on the edge
       connector */
	if (input_port_read(field->port->machine, "CAB"))
		ret = input_port_read(field->port->machine, "P2");
	else
		ret = input_port_read(field->port->machine, "P1");

	return ret;
}


static CUSTOM_INPUT( tomahawk_controls_r )
{
	UINT32 ret;

	/* on a cocktail cabinet, two sets of controls are
       multiplexed on a single set of inputs
         (not verified on pcb) */

	if (flipscreen)
		ret = input_port_read(field->port->machine, "P2");
	else
		ret = input_port_read(field->port->machine, "P1");

	return ret;
}



/*************************************
 *
 *  Video system
 *
 *************************************/

#define ASTROF_NUM_PENS		(0x10)
#define TOMAHAWK_NUM_PENS	(0x20)


static VIDEO_START( astrof )
{
	/* allocate the color RAM -- half the size of the video RAM as A0 is not connected */
	astrof_colorram = auto_malloc(astrof_videoram_size / 2);
	state_save_register_global_pointer(machine, astrof_colorram, astrof_videoram_size / 2);
}


static rgb_t make_pen(UINT8 data)
{
	UINT8 r1_bit = red_on ? 0x01 : (data >> 0) & 0x01;
	UINT8 r2_bit = red_on ? 0x01 : (data >> 1) & 0x01;
	UINT8 g1_bit =                 (data >> 2) & 0x01;
	UINT8 g2_bit =                 (data >> 3) & 0x01;
	UINT8 b1_bit =                 (data >> 4) & 0x01;
	UINT8 b2_bit =                 (data >> 5) & 0x01;

	/* this is probably not quite right, but I don't have the
       knowledge to figure out the actual weights - ZV */
	UINT8 r = (0xc0 * r1_bit) + (0x3f * r2_bit);
	UINT8 g = (0xc0 * g1_bit) + (0x3f * g2_bit);
	UINT8 b = (0xc0 * b1_bit) + (0x3f * b2_bit);

	return MAKE_RGB(r, g, b);
}


static void astrof_get_pens(running_machine *machine, pen_t *pens)
{
	offs_t i;
	UINT8 *prom = memory_region(machine, "proms");

	for (i = 0; i < ASTROF_NUM_PENS; i++)
	{
		UINT8 data = prom[(astrof_palette_bank ? 0x10 : 0x00) | i];

		pens[i] = make_pen(data);
	}
}


static void tomahawk_get_pens(running_machine *machine, pen_t *pens)
{
	offs_t i;
	UINT8 *prom = memory_region(machine, "proms");

	for (i = 0; i < TOMAHAWK_NUM_PENS; i++)
	{
		UINT8 data = prom[i];

		pens[i] = make_pen(data);
	}
}


static WRITE8_HANDLER( astrof_videoram_w )
{
	astrof_videoram[offset] = data;
	astrof_colorram[offset >> 1] = *astrof_color & 0x0e;
}


static WRITE8_HANDLER( tomahawk_videoram_w )
{
	astrof_videoram[offset] = data;
	astrof_colorram[offset >> 1] = (*astrof_color & 0x0e) | ((*astrof_color & 0x01) << 4);
}


static WRITE8_HANDLER( video_control_1_w )
{
	flipscreen = ((data >> 0) & 0x01) & input_port_read(space->machine, "CAB");

	/* this ties to the CLR pin of the shift registers */
	screen_off = (data & 0x02) ? TRUE : FALSE;

	/* D2 - not connected in the schematics, but at one point Astro Fighter sets it to 1 */
	/* D3-D7 - not connected */

	video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen));
}


static void astrof_set_video_control_2(UINT8 data)
{
	/* D0 - OUT0 - goes to edge conn. pin A10 - was perhaps meant to be a start lamp */
	/* D1 - OUT1 - goes to edge conn. pin A11 - was perhaps meant to be a start lamp */

	/* D2 - selects one of the two palette banks */
	astrof_palette_bank = (data & 0x04) ? TRUE : FALSE;

	/* D3 - turns on the red color gun regardless of the value in the color PROM */
	red_on = (data & 0x08) ? TRUE : FALSE;

	/* D4-D7 - not connected */
}

static WRITE8_HANDLER( astrof_video_control_2_w )
{
	astrof_set_video_control_2(data);
	video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen));
}


static void spfghmk2_set_video_control_2(UINT8 data)
{
	/* D0 - OUT0 - goes to edge conn. pin A10 - was perhaps meant to be a start lamp */
	/* D1 - OUT1 - goes to edge conn. pin A11 - was perhaps meant to be a start lamp */

	/* D2 - selects one of the two palette banks */
	astrof_palette_bank = (data & 0x04) ? TRUE : FALSE;

	/* D3-D7 - not connected */
}

static WRITE8_HANDLER( spfghmk2_video_control_2_w )
{
	spfghmk2_set_video_control_2(data);
	video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen));
}


static void tomahawk_set_video_control_2(UINT8 data)
{
	/* D0 - OUT0 - goes to edge conn. pin A10 - was perhaps meant to be a start lamp */
	/* D1 - OUT1 - goes to edge conn. pin A11 - was perhaps meant to be a start lamp */
	/* D2 - not connected */

	/* D3 - turns on the red color gun regardless of the value in the color PROM */
	red_on = (data & 0x08) ? TRUE : FALSE;
}

static WRITE8_HANDLER( tomahawk_video_control_2_w )
{
	tomahawk_set_video_control_2(data);
	video_screen_update_partial(space->machine->primary_screen, video_screen_get_vpos(space->machine->primary_screen));
}


static void video_update_common(bitmap_t *bitmap, const rectangle *cliprect, pen_t *pens)
{
	offs_t offs;

	for (offs = 0; offs < astrof_videoram_size; offs++)
	{
		UINT8 data;
		int i;

		UINT8 color = astrof_colorram[offs >> 1];

		pen_t back_pen = pens[color | 0x00];
		pen_t fore_pen = pens[color | 0x01];

		UINT8 y = offs;
		UINT8 x = offs >> 8 << 3;

		if (!flipscreen)
			y = ~y;

		if ((y <= cliprect->min_y) || (y >= cliprect->max_y))
			continue;

		if (screen_off)
			data = 0;
		else
			data = astrof_videoram[offs];

		for (i = 0; i < 8; i++)
		{
			pen_t pen = (data & 0x01) ? fore_pen : back_pen;

			if (flipscreen)
				*BITMAP_ADDR32(bitmap, y, 255 - x) = pen;
			else
				*BITMAP_ADDR32(bitmap, y, x) = pen;

			x = x + 1;
			data = data >> 1;
		}
	}
}


static VIDEO_UPDATE( astrof )
{
	pen_t pens[ASTROF_NUM_PENS];

	astrof_get_pens(screen->machine, pens);

	video_update_common(bitmap, cliprect, pens);

	return 0;
}


static VIDEO_UPDATE( tomahawk )
{
	pen_t pens[TOMAHAWK_NUM_PENS];

	tomahawk_get_pens(screen->machine, pens);

	video_update_common(bitmap, cliprect, pens);

	return 0;
}



/*************************************
 *
 *  Protection
 *
 *************************************/

static READ8_HANDLER( shoot_r )
{
	/* not really sure about this */
	return mame_rand(space->machine) & 8;
}


static READ8_HANDLER( abattle_coin_prot_r )
{
	abattle_count = (abattle_count + 1) % 0x0101;

	return abattle_count ? 0x07 : 0x00;
}


static READ8_HANDLER( afire_coin_prot_r )
{
	abattle_count = abattle_count ^ 0x01;

	return abattle_count ? 0x07 : 0x00;
}


static READ8_HANDLER( tomahawk_protection_r )
{
	/* flip the byte */
	return BITSWAP8(*tomahawk_protection, 0, 1, 2, 3, 4, 5, 6, 7);
}



/*************************************
 *
 *  Machine setup
 *
 *************************************/

static MACHINE_START( astrof )
{
	/* the 74175 outputs all HI's if not otherwise set */
	astrof_set_video_control_2(0xff);

	/* register for state saving */
	state_save_register_global(machine, red_on);
	state_save_register_global(machine, flipscreen);
	state_save_register_global(machine, screen_off);
	state_save_register_global(machine, astrof_palette_bank);

	MACHINE_START_CALL(astrof_audio);
}


static MACHINE_START( abattle )
{
	/* register for state saving */
	state_save_register_global(machine, abattle_count);

	MACHINE_START_CALL(astrof);
}


static MACHINE_START( spfghmk2 )
{
	/* the 74175 outputs all HI's if not otherwise set */
	spfghmk2_set_video_control_2(0xff);

	/* the red background circuit is disabled */
	red_on = FALSE;

	/* register for state saving */
	state_save_register_global(machine, flipscreen);
	state_save_register_global(machine, screen_off);
	state_save_register_global(machine, astrof_palette_bank);
}


static MACHINE_START( tomahawk )
{
	/* the 74175 outputs all HI's if not otherwise set */
	tomahawk_set_video_control_2(0xff);

	/* register for state saving */
	state_save_register_global(machine, red_on);
	state_save_register_global(machine, flipscreen);
	state_save_register_global(machine, screen_off);
}



/*************************************
 *
 *  Machine reset
 *
 *************************************/

static MACHINE_RESET( abattle )
{
	abattle_count = 0;
}



/*************************************
 *
 *  Memory handlers
 *
 *************************************/

static ADDRESS_MAP_START( astrof_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x03ff) AM_MIRROR(0x1c00) AM_RAM
	AM_RANGE(0x2000, 0x3fff) AM_NOP
	AM_RANGE(0x4000, 0x5fff) AM_RAM_WRITE(astrof_videoram_w) AM_BASE(&astrof_videoram) AM_SIZE(&astrof_videoram_size)
	AM_RANGE(0x6000, 0x7fff) AM_NOP
	AM_RANGE(0x8000, 0x8002) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0x8003, 0x8003) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, SMH_RAM) AM_BASE(&astrof_color)
	AM_RANGE(0x8004, 0x8004) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, video_control_1_w)
	AM_RANGE(0x8005, 0x8005) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, astrof_video_control_2_w)
	AM_RANGE(0x8006, 0x8006) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, astrof_audio_1_w)
	AM_RANGE(0x8007, 0x8007) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, astrof_audio_2_w)
	AM_RANGE(0xa000, 0xa000) AM_MIRROR(0x1ff8) AM_READ_PORT("IN") AM_WRITENOP
	AM_RANGE(0xa001, 0xa001) AM_MIRROR(0x1ff8) AM_READ_PORT("DSW") AM_WRITENOP
	AM_RANGE(0xa002, 0xa002) AM_MIRROR(0x1ff8) AM_READWRITE(irq_clear_r, SMH_NOP)
	AM_RANGE(0xa003, 0xa007) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0xc000, 0xffff) AM_ROM
ADDRESS_MAP_END


static ADDRESS_MAP_START( spfghmk2_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x03ff) AM_MIRROR(0x1c00) AM_RAM
	AM_RANGE(0x2000, 0x3fff) AM_NOP
	AM_RANGE(0x4000, 0x5fff) AM_RAM_WRITE(astrof_videoram_w) AM_BASE(&astrof_videoram) AM_SIZE(&astrof_videoram_size)
	AM_RANGE(0x6000, 0x7fff) AM_NOP
	AM_RANGE(0x8000, 0x8002) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0x8003, 0x8003) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, SMH_RAM) AM_BASE(&astrof_color)
	AM_RANGE(0x8004, 0x8004) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, video_control_1_w)
	AM_RANGE(0x8005, 0x8005) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, spfghmk2_video_control_2_w)
	AM_RANGE(0x8006, 0x8006) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, spfghmk2_audio_w)
	AM_RANGE(0x8007, 0x8007) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0xa000, 0xa000) AM_MIRROR(0x1ff8) AM_READ_PORT("IN") AM_WRITENOP
	AM_RANGE(0xa001, 0xa001) AM_MIRROR(0x1ff8) AM_READ_PORT("DSW") AM_WRITENOP
	AM_RANGE(0xa002, 0xa002) AM_MIRROR(0x1ff8) AM_READWRITE(irq_clear_r, SMH_NOP)
	AM_RANGE(0xa003, 0xa007) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0xc000, 0xffff) AM_ROM
ADDRESS_MAP_END


static ADDRESS_MAP_START( tomahawk_map, ADDRESS_SPACE_PROGRAM, 8 )
	AM_RANGE(0x0000, 0x03ff) AM_MIRROR(0x1c00) AM_RAM
	AM_RANGE(0x2000, 0x3fff) AM_NOP
	AM_RANGE(0x4000, 0x5fff) AM_RAM_WRITE(tomahawk_videoram_w) AM_BASE(&astrof_videoram) AM_SIZE(&astrof_videoram_size)
	AM_RANGE(0x6000, 0x7fff) AM_NOP
	AM_RANGE(0x8000, 0x8002) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0x8003, 0x8003) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, SMH_RAM) AM_BASE(&astrof_color)
	AM_RANGE(0x8004, 0x8004) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, video_control_1_w)
	AM_RANGE(0x8005, 0x8005) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, tomahawk_video_control_2_w)
	AM_RANGE(0x8006, 0x8006) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, tomahawk_audio_w)
	AM_RANGE(0x8007, 0x8007) AM_MIRROR(0x1ff8) AM_READWRITE(SMH_NOP, SMH_RAM) AM_BASE(&tomahawk_protection)
	AM_RANGE(0xa000, 0xa000) AM_MIRROR(0x1ff8) AM_READ_PORT("IN") AM_WRITENOP
	AM_RANGE(0xa001, 0xa001) AM_MIRROR(0x1ff8) AM_READ_PORT("DSW") AM_WRITENOP
	AM_RANGE(0xa002, 0xa002) AM_MIRROR(0x1ff8) AM_READWRITE(irq_clear_r, SMH_NOP)
	AM_RANGE(0xa003, 0xa003) AM_MIRROR(0x1ff8) AM_READWRITE(tomahawk_protection_r, SMH_NOP)
	AM_RANGE(0xa004, 0xa007) AM_MIRROR(0x1ff8) AM_NOP
	AM_RANGE(0xc000, 0xffff) AM_ROM
ADDRESS_MAP_END



/*************************************
 *
 *  Port definitions
 *
 *************************************/

static INPUT_PORTS_START( astrof )
	PORT_START("IN")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x1c, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p1_controls_r, NULL)
	PORT_BIT( 0xe0, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p2_controls_r, NULL)

	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )            PORT_DIPLOCATION("SW:1,2")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPSETTING(    0x03, "6" )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )          PORT_DIPLOCATION("SW:3,4")
	PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0c, DEF_STR( 2C_1C ) )            /* duplicate settings */
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x30, 0x00, DEF_STR( Bonus_Life ) )       PORT_DIPLOCATION("SW:5,6")    /* table at 0xf6b2 */
	PORT_DIPSETTING(    0x00, "5000" )
	PORT_DIPSETTING(    0x10, "7000" )
	PORT_DIPSETTING(    0x20, "10000" )
	PORT_DIPSETTING(    0x30, DEF_STR( None ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Difficulty ) )       PORT_DIPLOCATION("SW:7")
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Hard ) )
	PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK )

	PORT_START("CAB")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )          PORT_DIPLOCATION("SW:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Cocktail ) )
	PORT_BIT( 0xfe, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("COIN")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_CHANGED(service_coin_inserted, 0)
	PORT_BIT( 0xfc, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END

/* same as 'astrof', but inputs are ACTIVE_HIGH instead of ACTIVE_LOW */
static INPUT_PORTS_START( abattle )
	PORT_START("IN")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_START2 )
	PORT_BIT( 0x1c, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p1_controls_r, NULL)
	PORT_BIT( 0xe0, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p2_controls_r, NULL)

	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_2WAY
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 )
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )  PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )            PORT_DIPLOCATION("SW:1,2")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPSETTING(    0x03, "6" )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )          PORT_DIPLOCATION("SW:3,4")
	PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0c, DEF_STR( 2C_1C ) )            /* duplicate settings */
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x30, 0x00, DEF_STR( Bonus_Life ) )       PORT_DIPLOCATION("SW:5,6")    /* table at 0xf87a */
	PORT_DIPSETTING(    0x00, "5000" )
	PORT_DIPSETTING(    0x10, "7000" )
	PORT_DIPSETTING(    0x20, "10000" )
	PORT_DIPSETTING(    0x30, DEF_STR( None ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Difficulty ) )       PORT_DIPLOCATION("SW:7")
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Hard ) )
	PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK )

	PORT_START("CAB")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )          PORT_DIPLOCATION("SW:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Cocktail ) )
	PORT_BIT( 0xfe, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("COIN")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_CHANGED(service_coin_inserted, 0)
	PORT_BIT( 0xfc, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END


static INPUT_PORTS_START( spfghmk2 )
	PORT_START("IN")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x1c, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p1_controls_r, NULL)
	PORT_BIT( 0xe0, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p2_controls_r, NULL)

	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPUNUSED_DIPLOC( 0x01, 0x00, "SW:1" )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Lives ) )            PORT_DIPLOCATION("SW:2")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )          PORT_DIPLOCATION("SW:3,4")
	PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0c, DEF_STR( 2C_1C ) )            /* duplicate settings */
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x30, 0x00, "Free Credit" )               PORT_DIPLOCATION("SW:5,6")    /* table at 0xfa58 */
	PORT_DIPSETTING(    0x00, "1500" )
	PORT_DIPSETTING(    0x10, "2000" )
	PORT_DIPSETTING(    0x20, "2500" )
	PORT_DIPSETTING(    0x30, "3000" )
	PORT_DIPUNUSED_DIPLOC( 0x40, 0x00, "SW:7" )
	PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK )

	PORT_START("CAB")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )          PORT_DIPLOCATION("SW:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Cocktail ) )
	PORT_BIT( 0xfe, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("COIN")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_CHANGED(service_coin_inserted, 0)
	PORT_BIT( 0xfc, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END

static INPUT_PORTS_START( spfgmk22 )
	PORT_START("IN")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_START2 )
	PORT_BIT( 0x1c, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p1_controls_r, NULL)
	PORT_BIT( 0xe0, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(astrof_p2_controls_r, NULL)

	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_2WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_2WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0xf8, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("DSW")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Difficulty ) )       PORT_DIPLOCATION("SW:1")
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Hard ) )
	PORT_DIPNAME( 0x02, 0x00, DEF_STR( Lives ) )            PORT_DIPLOCATION("SW:2")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )          PORT_DIPLOCATION("SW:3,4")
	PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0c, DEF_STR( 2C_1C ) )            /* duplicate settings */
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x30, 0x00, "Free Credit" )               PORT_DIPLOCATION("SW:5,6")    /* table at 0xf9f8 */
	PORT_DIPSETTING(    0x00, "2000" )
	PORT_DIPSETTING(    0x10, "3000" )
	PORT_DIPSETTING(    0x20, "4000" )
	PORT_DIPSETTING(    0x30, "5000" )
	PORT_DIPNAME( 0x40, 0x00, "Kill Saucer after Invaders" ) PORT_DIPLOCATION("SW:7")
	PORT_DIPSETTING(    0x00, DEF_STR( No ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Yes ) )              /* if saucer lands, game is over */
	PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK )

	PORT_START("CAB")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )          PORT_DIPLOCATION("SW:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Cocktail ) )
	PORT_BIT( 0xfe, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("COIN")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_CHANGED(service_coin_inserted, 0)
	PORT_BIT( 0xfc, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END


static INPUT_PORTS_START( tomahawk )
	PORT_START("IN")
	PORT_BIT( 0x1f, IP_ACTIVE_HIGH, IPT_SPECIAL ) PORT_CUSTOM(tomahawk_controls_r, NULL)
	PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 )
	PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_START2 )
  	PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )

	PORT_START("P1")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_4WAY
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )  PORT_4WAY
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )    PORT_4WAY
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 )
	PORT_BIT( 0xe0, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("P2")
	PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT )  PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN )  PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_UP )    PORT_4WAY PORT_COCKTAIL
	PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_COCKTAIL
	PORT_BIT( 0xe0, IP_ACTIVE_HIGH, IPT_UNUSED )

  	PORT_START("DSW")
	PORT_DIPNAME( 0x03, 0x00, DEF_STR( Lives ) )            PORT_DIPLOCATION("SW:1,2")
	PORT_DIPSETTING(    0x00, "3" )
	PORT_DIPSETTING(    0x01, "4" )
	PORT_DIPSETTING(    0x02, "5" )
	PORT_DIPSETTING(    0x03, "6" )
	PORT_DIPNAME( 0x0c, 0x00, DEF_STR( Coinage ) )          PORT_DIPLOCATION("SW:3,4")
	PORT_DIPSETTING(    0x08, DEF_STR( 2C_1C ) )
//  PORT_DIPSETTING(    0x0c, DEF_STR( 2C_1C ) )            /* duplicate settings */
	PORT_DIPSETTING(    0x00, DEF_STR( 1C_1C ) )
	PORT_DIPSETTING(    0x04, DEF_STR( 1C_2C ) )
	PORT_DIPNAME( 0x30, 0x00, DEF_STR( Bonus_Life ) )       PORT_DIPLOCATION("SW:5,6")    /* table at 0xf428 */
	PORT_DIPSETTING(    0x00, "5000" )
	PORT_DIPSETTING(    0x10, "7000" )
	PORT_DIPSETTING(    0x20, "10000" )
	PORT_DIPSETTING(    0x30, DEF_STR( None ) )
	PORT_DIPNAME( 0x40, 0x00, DEF_STR( Difficulty ) )       PORT_DIPLOCATION("SW:7")
	PORT_DIPSETTING(    0x00, DEF_STR( Easy ) )
	PORT_DIPSETTING(    0x40, DEF_STR( Hard ) )
	PORT_BIT ( 0x80, IP_ACTIVE_LOW, IPT_VBLANK )

	PORT_START("CAB")
	PORT_DIPNAME( 0x01, 0x00, DEF_STR( Cabinet ) )          PORT_DIPLOCATION("SW:8")
	PORT_DIPSETTING(    0x00, DEF_STR( Upright ) )
	PORT_DIPSETTING(    0x01, DEF_STR( Cocktail ) )
	PORT_BIT( 0xfe, IP_ACTIVE_HIGH, IPT_UNUSED )

	PORT_START("COIN")
	PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_COIN1 ) PORT_CHANGED(coin_inserted, 0)
	PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_SERVICE1 ) PORT_CHANGED(service_coin_inserted, 0)
	PORT_BIT( 0xfc, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END

static INPUT_PORTS_START( tomahaw1 )
	PORT_INCLUDE( tomahawk )

	PORT_MODIFY("DSW")
	PORT_DIPNAME( 0x30, 0x00, DEF_STR( Bonus_Life ) )       PORT_DIPLOCATION("SW:5,6")    /* table at 0xf3c8 */
	PORT_DIPSETTING(    0x00, "3000" )
	PORT_DIPSETTING(    0x10, "5000" )
	PORT_DIPSETTING(    0x20, "7000" )
	PORT_DIPSETTING(    0x30, DEF_STR( None ) )
	PORT_DIPUNUSED_DIPLOC( 0x40, 0x00, "SW:7" )
INPUT_PORTS_END



/*************************************
 *
 *  Machine drivers
 *
 *************************************/

static MACHINE_DRIVER_START( base )

	/* basic machine hardware */
	MDRV_CPU_ADD("maincpu", M6502, MAIN_CPU_CLOCK)
	MDRV_TIMER_ADD_SCANLINE("vblank", irq_callback, "screen", VBSTART, 0)

	/* video hardware */
	MDRV_VIDEO_START(astrof)

	MDRV_SCREEN_ADD("screen", RASTER)
	MDRV_SCREEN_FORMAT(BITMAP_FORMAT_RGB32)
	MDRV_SCREEN_RAW_PARAMS(PIXEL_CLOCK, HTOTAL, HBEND, HBSTART, VTOTAL, VBEND, VBSTART)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( astrof )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(base)
	MDRV_CPU_MODIFY("maincpu")
	MDRV_CPU_PROGRAM_MAP(astrof_map,0)

	MDRV_MACHINE_START(astrof)

	/* video hardware */
	MDRV_VIDEO_UPDATE(astrof)

	/* audio hardware */
	MDRV_IMPORT_FROM(astrof_audio)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( abattle )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(astrof)

	MDRV_MACHINE_START(abattle)
	MDRV_MACHINE_RESET(abattle)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( spfghmk2 )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(base)
	MDRV_CPU_MODIFY("maincpu")
	MDRV_CPU_PROGRAM_MAP(spfghmk2_map,0)

	MDRV_MACHINE_START(spfghmk2)

	/* video hardware */
	MDRV_VIDEO_UPDATE(astrof)

	/* audio hardware */
	MDRV_IMPORT_FROM(spfghmk2_audio)
MACHINE_DRIVER_END


static MACHINE_DRIVER_START( tomahawk )

	/* basic machine hardware */
	MDRV_IMPORT_FROM(base)
	MDRV_CPU_MODIFY("maincpu")
	MDRV_CPU_PROGRAM_MAP(tomahawk_map,0)

	MDRV_MACHINE_START(tomahawk)

	/* video hardware */
	MDRV_VIDEO_UPDATE(tomahawk)

	/* audio hardware */
	MDRV_IMPORT_FROM(tomahawk_audio)
MACHINE_DRIVER_END



/*************************************
 *
 *  ROM definitions
 *
 *************************************/

ROM_START( astrof )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "afii.6",       0xd000, 0x0800, CRC(d6cd13a4) SHA1(359b00b02f4256f1138c8526214c6a34d2e5b47a) )
	ROM_LOAD( "afii.5",       0xd800, 0x0800, CRC(6fd3c4df) SHA1(73aad03e2588ac9f249d5751eb4a7c7cd12fd3b9) )
	ROM_LOAD( "afii.4",       0xe000, 0x0800, CRC(9612dae3) SHA1(8ee1797c212e06c381972b7b555f240ff317d75d) )
	ROM_LOAD( "afii.3",       0xe800, 0x0800, CRC(5a0fef42) SHA1(92a575abdf17bbb5ed6bc67479049523a985aa75) )
	ROM_LOAD( "afii.2",       0xf000, 0x0800, CRC(69f8a4fc) SHA1(9f9a935f19187640018009ade92f8993912ef6c2) )
	ROM_LOAD( "afii.1",       0xf800, 0x0800, CRC(322c09d2) SHA1(89723e3d998ff9cb9b174bca4b072b412b290c04) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( astrof2 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "kei2",         0xd000, 0x0400, CRC(9f0bd355) SHA1(45db9229dcd8bbd366ff13c683625c3d1c175598) )
	ROM_LOAD( "keii",         0xd400, 0x0400, CRC(71f229f0) SHA1(be426360567066df01fb428dc5cd2d6ef01a4cf7) )
	ROM_LOAD( "kei0",         0xd800, 0x0400, CRC(88114f7c) SHA1(e64ae3cac92d2a3c02edc8e81c88d5d275e89293) )
	ROM_LOAD( "af579.08",     0xdc00, 0x0400, CRC(9793c124) SHA1(ae0352ed13fa21a00181669e92f9e66c938e4843) )
	ROM_LOAD( "ke8",          0xe000, 0x0400, CRC(08e44b12) SHA1(0e156fff081ae74321597eca1a02920bfc464651) )
	ROM_LOAD( "ke7",          0xe400, 0x0400, CRC(8a42d62c) SHA1(f5c0043be113c88f87deee3a2acd7d778a569e4f) )
	ROM_LOAD( "ke6",          0xe800, 0x0400, CRC(3e9aa743) SHA1(5f473afee7a416bb6f4e658cf8e46f8362ae3bba) )
	ROM_LOAD( "ke5",          0xec00, 0x0400, CRC(712a4557) SHA1(66a19378782c3911b8740ca25451ce84e1096fd0) )
	ROM_LOAD( "ke4",          0xf000, 0x0400, CRC(ad06f306) SHA1(d6ab7cba97658a46a63846a203eb89d9fc367e4f) )
	ROM_LOAD( "ke3",          0xf400, 0x0400, CRC(680b91b4) SHA1(004fd0f6564c19277632adec42bcf1054d043e4a) )
	ROM_LOAD( "ke2",          0xf800, 0x0400, CRC(2c4cab1a) SHA1(3171764a17f2c5fda39f0b32ccce60bc107d306e) )
	ROM_LOAD( "af583.00",     0xfc00, 0x0400, CRC(f699dda3) SHA1(e595cb93df40f64f7521afa51a879d53e1d04126) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( astrof3 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "kei2",         0xd000, 0x0400, CRC(9f0bd355) SHA1(45db9229dcd8bbd366ff13c683625c3d1c175598) )
	ROM_LOAD( "keii",         0xd400, 0x0400, CRC(71f229f0) SHA1(be426360567066df01fb428dc5cd2d6ef01a4cf7) )
	ROM_LOAD( "kei0",         0xd800, 0x0400, CRC(88114f7c) SHA1(e64ae3cac92d2a3c02edc8e81c88d5d275e89293) )
	ROM_LOAD( "ke9",          0xdc00, 0x0400, CRC(29cbaea6) SHA1(da29e8156218884195b16839be9ad1e98a8348ac) )
	ROM_LOAD( "ke8",          0xe000, 0x0400, CRC(08e44b12) SHA1(0e156fff081ae74321597eca1a02920bfc464651) )
	ROM_LOAD( "ke7",          0xe400, 0x0400, CRC(8a42d62c) SHA1(f5c0043be113c88f87deee3a2acd7d778a569e4f) )
	ROM_LOAD( "ke6",          0xe800, 0x0400, CRC(3e9aa743) SHA1(5f473afee7a416bb6f4e658cf8e46f8362ae3bba) )
	ROM_LOAD( "ke5",          0xec00, 0x0400, CRC(712a4557) SHA1(66a19378782c3911b8740ca25451ce84e1096fd0) )
	ROM_LOAD( "ke4",          0xf000, 0x0400, CRC(ad06f306) SHA1(d6ab7cba97658a46a63846a203eb89d9fc367e4f) )
	ROM_LOAD( "ke3",          0xf400, 0x0400, CRC(680b91b4) SHA1(004fd0f6564c19277632adec42bcf1054d043e4a) )
	ROM_LOAD( "ke2",          0xf800, 0x0400, CRC(2c4cab1a) SHA1(3171764a17f2c5fda39f0b32ccce60bc107d306e) )
	ROM_LOAD( "kei",          0xfc00, 0x0400, CRC(fce4718d) SHA1(3a313328609f6bef644a2d906d8ca74c5d52058b) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( abattle )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "10405-b.bin",  0xd000, 0x0400, CRC(9ba57987) SHA1(becf89b7d474f86839f13f9be5502c91491e8584) )
	ROM_LOAD( "10405-a.bin",  0xd400, 0x0400, CRC(3fbbeeba) SHA1(1c9f519a0797f90524adf187b0761f150db0828d) )
	ROM_LOAD( "10405-9.bin",  0xd800, 0x0400, CRC(354cf432) SHA1(138956ea8064eba0dcd8b2f175d4981b689a2077) )
	ROM_LOAD( "10405-8.bin",  0xdc00, 0x0400, CRC(4cee0c8b) SHA1(98bfdda9d2d368db16d6e9090536b09d8337c0e5) )
	ROM_LOAD( "10405-4.bin",  0xe000, 0x0400, CRC(9cb477f3) SHA1(6866264aa8d0479cee237a00e4a919e3981144a5) )
	ROM_LOAD( "10405-6.bin",  0xe400, 0x0400, CRC(272de8f1) SHA1(e917b3b8bb96fedacd6d5cb3d1c30977818f2e85) )
	ROM_LOAD( "10405-5.bin",  0xe800, 0x0400, CRC(ff25acaa) SHA1(5cb360c556c9b36039ae05702e6900b82fe5676b) )
	ROM_LOAD( "10405-3.bin",  0xec00, 0x0400, CRC(6edf202d) SHA1(a4cab2f10a99e0a4b1c571168e17cbee1d18cf06) )
	ROM_LOAD( "10405-7.bin",  0xf000, 0x0400, CRC(02a35ad9) SHA1(d54afff13f8d5a6544dda49c766a147fa0172cfa) )
	ROM_LOAD( "10405-1.bin",  0xf400, 0x0400, CRC(c68f6657) SHA1(a38c24670fcbbf7844ca15f918efcb467bae7bef) )
	ROM_LOAD( "10405-2.bin",  0xf800, 0x0400, CRC(b206deda) SHA1(9ab52920c06ed6beb38bc7f97ffd00e8ad46c17d) )
	ROM_LOAD( "10405-0.bin",  0xfc00, 0x0400, CRC(c836a152) SHA1(418b64d50bb2f849b1e7177c7bf2fdd0cc99e079) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "8f-clr.bin",   0x0000, 0x0100, CRC(3bf3ccb0) SHA1(d61d19d38045f42a9adecf295e479fee239bed48) )

	ROM_REGION( 0x0100, "user1", 0 )	/* decryption table */
	ROM_LOAD( "2h-prot.bin",  0x0000, 0x0100, CRC(a6bdd18c) SHA1(438bfc543730afdb531204585f17a68ddc03ded0) )
ROM_END


ROM_START( abattle2 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "10405-b.bin",  0xd000, 0x0400, CRC(9ba57987) SHA1(becf89b7d474f86839f13f9be5502c91491e8584) )
	ROM_LOAD( "10405-a.bin",  0xd400, 0x0400, CRC(3fbbeeba) SHA1(1c9f519a0797f90524adf187b0761f150db0828d) )
	ROM_LOAD( "10405-9.bin",  0xd800, 0x0400, CRC(354cf432) SHA1(138956ea8064eba0dcd8b2f175d4981b689a2077) )
	ROM_LOAD( "10405-8.bin",  0xdc00, 0x0400, CRC(4cee0c8b) SHA1(98bfdda9d2d368db16d6e9090536b09d8337c0e5) )
	ROM_LOAD( "sidam-4.bin",  0xe000, 0x0400, CRC(f6998053) SHA1(f1a868e68db1ca89c54ee179aa4c922ec49b686b) )
	ROM_LOAD( "10405-6.bin",  0xe400, 0x0400, CRC(272de8f1) SHA1(e917b3b8bb96fedacd6d5cb3d1c30977818f2e85) )
	ROM_LOAD( "sidam-5.bin",  0xe800, 0x0400, CRC(6ddd78ff) SHA1(2fdf3fd145446f174293818aa81463097227361e) )
	ROM_LOAD( "10405-3.bin",  0xec00, 0x0400, CRC(6edf202d) SHA1(a4cab2f10a99e0a4b1c571168e17cbee1d18cf06) )
	ROM_LOAD( "10405-7.bin",  0xf000, 0x0400, CRC(02a35ad9) SHA1(d54afff13f8d5a6544dda49c766a147fa0172cfa) )
	ROM_LOAD( "10405-1.bin",  0xf400, 0x0400, CRC(c68f6657) SHA1(a38c24670fcbbf7844ca15f918efcb467bae7bef) )
	ROM_LOAD( "10405-2.bin",  0xf800, 0x0400, CRC(b206deda) SHA1(9ab52920c06ed6beb38bc7f97ffd00e8ad46c17d) )
	ROM_LOAD( "10405-0.bin",  0xfc00, 0x0400, CRC(c836a152) SHA1(418b64d50bb2f849b1e7177c7bf2fdd0cc99e079) )

	ROM_REGION( 0x0100, "proms", 0 )
	ROM_LOAD( "8f-clr.bin",   0x0000, 0x0100, CRC(3bf3ccb0) SHA1(d61d19d38045f42a9adecf295e479fee239bed48) )

	ROM_REGION( 0x0100, "user1", 0 )	/* decryption table */
	ROM_LOAD( "2h-prot.bin",  0x0000, 0x0100, CRC(a6bdd18c) SHA1(438bfc543730afdb531204585f17a68ddc03ded0) )
ROM_END


ROM_START( afire )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "b.bin",        0xd000, 0x0400, CRC(16ad2bcc) SHA1(e7f55d17ee18afbb045cd0fd8d3ffc0c8300130a) )
	ROM_LOAD( "a.bin",        0xd400, 0x0400, CRC(ce8b6e4f) SHA1(b85ab709d80324df5d2c4b0dbbc5e6aeb4003077) )
	ROM_LOAD( "9.bin",        0xd800, 0x0400, CRC(e0f45b07) SHA1(091e1ea4b3726888dc488bb01e0bd4e588eccae5) )
	ROM_LOAD( "8.bin",        0xdc00, 0x0400, CRC(85b96728) SHA1(dbbfbc085f19184d861c42a0307f95f9105a677b) )
	ROM_LOAD( "4.bin",        0xe000, 0x0400, CRC(271f90ad) SHA1(fe41a0f35d30d38fc21ac19982899d93cbd292f0) )
	ROM_LOAD( "6.bin",        0xe400, 0x0400, CRC(568efbfe) SHA1(ef39f0fc4c030fc7f688515415aedeb4c039b73a) )
	ROM_LOAD( "5.bin",        0xe800, 0x0400, CRC(1c0b298a) SHA1(61677f8f402679fcfbb9fb12f9dfde7b6e1cdd1c) )
	ROM_LOAD( "3.bin",        0xec00, 0x0400, CRC(2938c641) SHA1(c8655a8218818c12eca0f00a361412e4946f8b5c) )
	ROM_LOAD( "7.bin",        0xf000, 0x0400, CRC(912c8fe1) SHA1(1ae1eb13858d39200386f59c3381eef2699e4647) )
	ROM_LOAD( "1.bin",        0xf400, 0x0400, CRC(0ef045d8) SHA1(c41b284ccdf5da3a5e9b4732324b3d61440ce9db) )
	ROM_LOAD( "2.bin",        0xf800, 0x0400, CRC(d4ea2760) SHA1(57c9a4d21fbb28019fcd2f60c0424b3c9ae1055c) )
	ROM_LOAD( "0.bin",        0xfc00, 0x0400, CRC(fe695575) SHA1(b12587a4de624ab712ed6336bd2eb69b12bde563) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


/* This is a newer revision of "Astro Combat" (most probably manufactured by Sidam),
   with correct spelling for FUEL and the main boss sporting "CB". */
ROM_START( acombat )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "b.bin",        0xd000, 0x0400, CRC(16ad2bcc) SHA1(e7f55d17ee18afbb045cd0fd8d3ffc0c8300130a) )
	ROM_LOAD( "a.bin",        0xd400, 0x0400, CRC(ce8b6e4f) SHA1(b85ab709d80324df5d2c4b0dbbc5e6aeb4003077) )
	ROM_LOAD( "9.bin",        0xd800, 0x0400, CRC(e0f45b07) SHA1(091e1ea4b3726888dc488bb01e0bd4e588eccae5) )
	ROM_LOAD( "8.bin",        0xdc00, 0x0400, CRC(85b96728) SHA1(dbbfbc085f19184d861c42a0307f95f9105a677b) )
	ROM_LOAD( "4.bin",        0xe000, 0x0400, CRC(271f90ad) SHA1(fe41a0f35d30d38fc21ac19982899d93cbd292f0) )
	ROM_LOAD( "6.bin",        0xe400, 0x0400, CRC(568efbfe) SHA1(ef39f0fc4c030fc7f688515415aedeb4c039b73a) )
	ROM_LOAD( "5.bin",        0xe800, 0x0400, CRC(1c0b298a) SHA1(61677f8f402679fcfbb9fb12f9dfde7b6e1cdd1c) )
	ROM_LOAD( "3.bin",        0xec00, 0x0400, CRC(2938c641) SHA1(c8655a8218818c12eca0f00a361412e4946f8b5c) )
	ROM_LOAD( "7.bin",        0xf000, 0x0400, CRC(912c8fe1) SHA1(1ae1eb13858d39200386f59c3381eef2699e4647) )
	ROM_LOAD( "1a",           0xf400, 0x0400, CRC(7193f999) SHA1(13ddeddb1f22cae973102203ab4917b1407b6401) )
	ROM_LOAD( "2a",           0xf800, 0x0400, CRC(3b6ccbbe) SHA1(f9cf023557ee769bcb92df808628a39630b258f2) )
	ROM_LOAD( "0a",           0xfc00, 0x0400, CRC(355da937) SHA1(e50f364372120926d062203bd476ff68ab3bb5cf) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


/* It is on older revision of "Astro Combat" (most probably manufactured by Sidam),
   with incorrect spelling for fuel as FLUEL and the main boss sporting "PZ" */
ROM_START( acombato )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "b.bin",        0xd000, 0x0400, CRC(16ad2bcc) SHA1(e7f55d17ee18afbb045cd0fd8d3ffc0c8300130a) )
	ROM_LOAD( "a.bin",        0xd400, 0x0400, CRC(ce8b6e4f) SHA1(b85ab709d80324df5d2c4b0dbbc5e6aeb4003077) )
	ROM_LOAD( "9.bin",        0xd800, 0x0400, CRC(e0f45b07) SHA1(091e1ea4b3726888dc488bb01e0bd4e588eccae5) )
	ROM_LOAD( "8.bin",        0xdc00, 0x0400, CRC(85b96728) SHA1(dbbfbc085f19184d861c42a0307f95f9105a677b) )
	ROM_LOAD( "4.bin",        0xe000, 0x0400, CRC(271f90ad) SHA1(fe41a0f35d30d38fc21ac19982899d93cbd292f0) )
	ROM_LOAD( "6.bin",        0xe400, 0x0400, CRC(568efbfe) SHA1(ef39f0fc4c030fc7f688515415aedeb4c039b73a) )
	ROM_LOAD( "5.bin",        0xe800, 0x0400, CRC(1c0b298a) SHA1(61677f8f402679fcfbb9fb12f9dfde7b6e1cdd1c) )
	ROM_LOAD( "3.bin",        0xec00, 0x0400, CRC(2938c641) SHA1(c8655a8218818c12eca0f00a361412e4946f8b5c) )
	ROM_LOAD( "7.bin",        0xf000, 0x0400, CRC(912c8fe1) SHA1(1ae1eb13858d39200386f59c3381eef2699e4647) )
	ROM_LOAD( "1a",           0xf400, 0x0400, CRC(7193f999) SHA1(13ddeddb1f22cae973102203ab4917b1407b6401) )
	ROM_LOAD( "2a",           0xf800, 0x0400, CRC(3b6ccbbe) SHA1(f9cf023557ee769bcb92df808628a39630b258f2) )
	ROM_LOAD( "0",            0xfc00, 0x0400, CRC(c4f3eaad) SHA1(51f03f35c45ac00a7f38fd97386be92bcb562ca2) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( sstarbtl )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "b.bin",        0xd000, 0x0400, CRC(16ad2bcc) SHA1(e7f55d17ee18afbb045cd0fd8d3ffc0c8300130a) )
	ROM_LOAD( "a.rom",        0xd400, 0x0400, CRC(5a75891d) SHA1(71cde93a219ec3735cead7ec89f77bc8b11bfc64) )
	ROM_LOAD( "9.rom",        0xd800, 0x0400, CRC(de3f8063) SHA1(77b89ef0b356316e463d7575c037069d0c14a850) )
	ROM_LOAD( "8.bin",        0xdc00, 0x0400, CRC(85b96728) SHA1(dbbfbc085f19184d861c42a0307f95f9105a677b) )
	ROM_LOAD( "4.bin",        0xe000, 0x0400, CRC(271f90ad) SHA1(fe41a0f35d30d38fc21ac19982899d93cbd292f0) )
	ROM_LOAD( "6.bin",        0xe400, 0x0400, CRC(568efbfe) SHA1(ef39f0fc4c030fc7f688515415aedeb4c039b73a) )
	ROM_LOAD( "5.rom",        0xe800, 0x0400, CRC(4202b7f8) SHA1(c9d153323bdc0c99f4987895d1fba1ebf3bc7f2d) )
	ROM_LOAD( "3.bin",        0xec00, 0x0400, CRC(2938c641) SHA1(c8655a8218818c12eca0f00a361412e4946f8b5c) )
	ROM_LOAD( "7.rom",        0xf000, 0x0400, CRC(76990bf1) SHA1(e0d8e2015401d1190fc8cd9dac3e20a4a54cdc02) )
	ROM_LOAD( "1.rom",        0xf400, 0x0400, CRC(c72dd542) SHA1(08b6aab4c53dac77c6e0af21bae3fed4facef7ef) )
	ROM_LOAD( "2a",           0xf800, 0x0400, CRC(3b6ccbbe) SHA1(f9cf023557ee769bcb92df808628a39630b258f2) )
	ROM_LOAD( "0.rom",        0xfc00, 0x0400, CRC(b31ed075) SHA1(faaa21c9b62deb36dcc4805b38ef55db63fb854a) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "astrf.clr",    0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( spfghmk2 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "2708.5e",      0xe400, 0x0400, CRC(cd5f66de) SHA1(aea3d88eb1d59a9279361369991fcace90c4b61a) )
	ROM_LOAD( "2708.5d",      0xe800, 0x0400, CRC(385cca72) SHA1(8d38a127f7603f1573df24cb028e1f41098a61c1) )
	ROM_LOAD( "2708.5c",      0xec00, 0x0400, CRC(e6eaac70) SHA1(3af366f190ed0aed43cc584c6bd472da957c725a) )
	ROM_LOAD( "2708.4h",      0xf000, 0x0400, CRC(27945183) SHA1(7907d3d2b90d38c35fb6cf194408d2be23769c8c) )
	ROM_LOAD( "2708.4e",      0xf400, 0x0400, CRC(2115e25f) SHA1(a7c529f42d9bf70c7f81df949ba4666bde8da4c5) )
	ROM_LOAD( "2708.4d",      0xf800, 0x0400, CRC(b9655874) SHA1(22e53bc0b68acc8483bd18b15a020af19cf3e151) )
	ROM_LOAD( "2708.4c",      0xfc00, 0x0400, CRC(7d67f6b5) SHA1(aed42c2c48d50fb9e3c2860cdc9d448024a554ae) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "709-5.1a",     0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( spfgmk22 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "2708mkii.5e",  0xe400, 0x0400, CRC(27d7060d) SHA1(796c44a395e1c54769dc57050503b4b111bde7ef) )
	ROM_LOAD( "2708mkii.5d",  0xe800, 0x0400, CRC(6ccb3b0a) SHA1(566104ca2e0fae741d4650e7159c9ddb48f59e8b) )
	ROM_LOAD( "2708mkii.5c",  0xec00, 0x0400, CRC(68eb0ad5) SHA1(d303685ffd67898cec3e7c51b3831558a837e5a3) )
	ROM_LOAD( "2708mkii.4h",  0xf000, 0x0400, CRC(ea8d1f2f) SHA1(35b01e76284080d5bd0270e4004a54386d9eb697) )
	ROM_LOAD( "2708mkii.4e",  0xf400, 0x0400, CRC(6e7f00ae) SHA1(91ca17d5dc75be641c059fd84bed7cced2a2ef69) )
	ROM_LOAD( "2708mkii.4d",  0xf800, 0x0400, CRC(29501dba) SHA1(978d7009eab8da40ccf0d026c9dabc0a3fa95d76) )
	ROM_LOAD( "2708mkii.4c",  0xfc00, 0x0400, CRC(9bd589a6) SHA1(bce92fcab5220ff68526bc8c1c88ab0f317fe400) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "709-5.1a",     0x0000, 0x0020, CRC(61329fd1) SHA1(15782d8757d4dda5a8b97815e94c90218f0e08dd) )
ROM_END


ROM_START( tomahawk )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "thawk.l8",     0xdc00, 0x0400, CRC(b01dab4b) SHA1(d8b4266359a3b18d649f539fad8dce4d73cec412) )
	ROM_LOAD( "thawk.l7",     0xe000, 0x0400, CRC(3a6549e8) SHA1(2ba622d78596c72998784432cf8fbbe733c50ce5) )
	ROM_LOAD( "thawk.l6",     0xe400, 0x0400, CRC(863e47f7) SHA1(e8e48560c217025796be20f51c50ec276dba3eb5) )
	ROM_LOAD( "thawk.l5",     0xe800, 0x0400, CRC(de0183bc) SHA1(7cb8d013750c8fb423ab2759443f805bc8440d53) )
	ROM_LOAD( "thawk.l4",     0xec00, 0x0400, CRC(11e9c7ea) SHA1(9dbdce7d518891aa8b08dca50d4e8aaec89cc038) )
	ROM_LOAD( "thawk.l3",     0xf000, 0x0400, CRC(ec44d388) SHA1(7dda9db5ce2271988e9316dacf4b6ccbb72f50c9) )
	ROM_LOAD( "thawk.l2",     0xf400, 0x0400, CRC(dc0a0f54) SHA1(8e5c94706768ffafaba96382f2e757ecb825799f) )
	ROM_LOAD( "thawk.l1",     0xf800, 0x0400, CRC(1d9dab9c) SHA1(54dd91164db0489bd5984f10d4f0254184302ae4) )
	ROM_LOAD( "thawk.l0",     0xfc00, 0x0400, CRC(d21a1eba) SHA1(ce9ad7a1a3b069ef4eb8b5ce569e52c488a224f2) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "t777.clr",     0x0000, 0x0020, CRC(d6a528fd) SHA1(5fc08252a2d7c5405f601efbfb7d84bec328d733) )
ROM_END


ROM_START( tomahaw1 )
	ROM_REGION( 0x10000, "maincpu", 0 )
	ROM_LOAD( "l8-1",         0xdc00, 0x0400, CRC(7c911661) SHA1(3fc75bb0e6a89d41d76f82eeb0fde7d33809dddf) )
	ROM_LOAD( "l7-1",         0xe000, 0x0400, CRC(adeffb69) SHA1(8ff7ada883825a8b56cae3368ce377228922ab1d) )
	ROM_LOAD( "l6-1",         0xe400, 0x0400, CRC(9116e59d) SHA1(22a6d410fff8534b3aa7eb2ed0a8c096c890acf5) )
	ROM_LOAD( "l5-1",         0xe800, 0x0400, CRC(01e4c7c4) SHA1(fbb37539d08284bae6454cd57650e8507a88acdb) )
	ROM_LOAD( "l4-1",         0xec00, 0x0400, CRC(d9f69cb0) SHA1(d6a2dcaf867f33068e7d7ad7a3faf62a360456a6) )
	ROM_LOAD( "l3-1",         0xf000, 0x0400, CRC(7ce7183f) SHA1(949c7b696fe215b68af450299c91e90fb27b0141) )
	ROM_LOAD( "l2-1",         0xf400, 0x0400, CRC(43fea29d) SHA1(6890311440089a16d2e4d502855670723df41e16) )
	ROM_LOAD( "l1-1",         0xf800, 0x0400, CRC(f2096ba9) SHA1(566f6d49cdacb5e39c40eb3773640270ef5f272c) )
	ROM_LOAD( "l0-1",         0xfc00, 0x0400, CRC(42edbc28) SHA1(bab1fe8591509783dfdd4f53b9159263b9201970) )

	ROM_REGION( 0x0020, "proms", 0 )
	ROM_LOAD( "t777.clr",     0x0000, 0x0020, CRC(d6a528fd) SHA1(5fc08252a2d7c5405f601efbfb7d84bec328d733) )
ROM_END



/*************************************
 *
 *  Game specific initialization
 *
 *************************************/

static DRIVER_INIT( abattle )
{
	/* use the protection PROM to decrypt the ROMs */
	UINT8 *rom = memory_region(machine, "maincpu");
	UINT8 *prom = memory_region(machine, "user1");
	int i;

	for(i = 0xd000; i < 0x10000; i++)
		rom[i] = prom[rom[i]];

	/* set up protection handlers */
	memory_install_read8_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xa003, 0xa003, 0, 0, shoot_r);
	memory_install_read8_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xa004, 0xa004, 0, 0, abattle_coin_prot_r);
}


static DRIVER_INIT( afire )
{
	UINT8 *rom = memory_region(machine, "maincpu");
	int i;

	for(i = 0xd000; i < 0x10000; i++)
		rom[i] = ~rom[i];

	/* set up protection handlers */
	memory_install_read8_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xa003, 0xa003, 0, 0, shoot_r);
	memory_install_read8_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xa004, 0xa004, 0, 0, afire_coin_prot_r);
}


static DRIVER_INIT( sstarbtl )
{
	UINT8 *rom = memory_region(machine, "maincpu");
	int i;

	for(i = 0xd000; i < 0x10000; i++)
		rom[i] = ~rom[i];

	/* set up protection handlers */
	memory_install_read8_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xa003, 0xa003, 0, 0, shoot_r);
	memory_install_read8_handler(cpu_get_address_space(machine->cpu[0], ADDRESS_SPACE_PROGRAM), 0xa004, 0xa004, 0, 0, abattle_coin_prot_r);
}



/*************************************
 *
 *  Game drivers
 *
 *************************************/

GAME( 1979, astrof,   0,        astrof,   astrof,   0,       ROT90, "Data East",   "Astro Fighter (set 1)", GAME_SUPPORTS_SAVE )
GAME( 1979, astrof2,  astrof,   astrof,   astrof,   0,       ROT90, "Data East",   "Astro Fighter (set 2)", GAME_SUPPORTS_SAVE )
GAME( 1979, astrof3,  astrof,   astrof,   astrof,   0,       ROT90, "Data East",   "Astro Fighter (set 3)", GAME_SUPPORTS_SAVE )
GAME( 1979, abattle,  astrof,   abattle,  abattle,  abattle, ROT90, "Sidam",       "Astro Battle (set 1)", GAME_SUPPORTS_SAVE )
GAME( 1979, abattle2, astrof,   abattle,  abattle,  abattle, ROT90, "Sidam",       "Astro Battle (set 2)", GAME_SUPPORTS_SAVE )
GAME( 1979, afire,    astrof,   abattle,  abattle,  afire,   ROT90, "Rene Pierre", "Astro Fire", GAME_SUPPORTS_SAVE )
GAME( 1979, acombat,  astrof,   abattle,  abattle,  afire,   ROT90, "bootleg",     "Astro Combat (newer, CB)", GAME_SUPPORTS_SAVE )
GAME( 1979, acombato, astrof,   abattle,  abattle,  afire,   ROT90, "bootleg",     "Astro Combat (older, PZ)", GAME_SUPPORTS_SAVE )
GAME( 1979, sstarbtl, astrof,   abattle,  abattle,  sstarbtl,ROT90, "bootleg",     "Super Star Battle", GAME_SUPPORTS_SAVE )
GAME( 1979, spfghmk2, 0,        spfghmk2, spfghmk2, 0,       ROT90, "Data East",   "Space Fighter Mark II (set 1)", GAME_NO_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1979, spfgmk22, spfghmk2, spfghmk2, spfgmk22, 0,       ROT90, "Data East",   "Space Fighter Mark II (set 2)", GAME_NO_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1980, tomahawk, 0,        tomahawk, tomahawk, 0,       ROT90, "Data East",   "Tomahawk 777 (rev 5)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
GAME( 1980, tomahaw1, tomahawk, tomahawk, tomahaw1, 0,       ROT90, "Data East",   "Tomahawk 777 (rev 1)", GAME_IMPERFECT_SOUND | GAME_SUPPORTS_SAVE )
