summaryrefslogtreecommitdiffstatshomepage
path: root/trunk/src/mame/drivers/destroyr.c
diff options
context:
space:
mode:
Diffstat (limited to 'trunk/src/mame/drivers/destroyr.c')
-rw-r--r--trunk/src/mame/drivers/destroyr.c521
1 files changed, 521 insertions, 0 deletions
diff --git a/trunk/src/mame/drivers/destroyr.c b/trunk/src/mame/drivers/destroyr.c
new file mode 100644
index 00000000000..cf0eda53682
--- /dev/null
+++ b/trunk/src/mame/drivers/destroyr.c
@@ -0,0 +1,521 @@
+/***************************************************************************
+
+Atari Destroyer Driver
+
+TODO:
+- discrete sound
+- accurate implementation of scanline counter as documented in schematics,
+ generate irqs from there, and refresh rate 15750/262 (~60.1) instead of 60
+
+***************************************************************************/
+
+#include "emu.h"
+#include "cpu/m6800/m6800.h"
+
+#include "destroyr.lh"
+
+
+class destroyr_state : public driver_device
+{
+public:
+ destroyr_state(const machine_config &mconfig, device_type type, const char *tag)
+ : driver_device(mconfig, type, tag) { }
+
+ /* memory pointers */
+ UINT8 * m_major_obj_ram;
+ UINT8 * m_minor_obj_ram;
+ UINT8 * m_alpha_num_ram;
+
+ /* video-related */
+ int m_cursor;
+ int m_wavemod;
+
+ /* misc */
+ int m_potmask[2];
+ int m_potsense[2];
+ int m_attract;
+ int m_motor_speed;
+ int m_noise;
+
+ /* devices */
+ device_t *m_maincpu;
+};
+
+
+static SCREEN_UPDATE( destroyr )
+{
+ destroyr_state *state = screen->machine().driver_data<destroyr_state>();
+ int i, j;
+
+ bitmap_fill(bitmap, cliprect, 0);
+
+ /* draw major objects */
+ for (i = 0; i < 16; i++)
+ {
+ int attr = state->m_major_obj_ram[2 * i + 0] ^ 0xff;
+ int horz = state->m_major_obj_ram[2 * i + 1];
+
+ int num = attr & 3;
+ int scan = attr & 4;
+ int flipx = attr & 8;
+
+ if (scan == 0)
+ {
+ if (horz >= 192)
+ horz -= 256;
+ }
+ else
+ {
+ if (horz < 192)
+ continue;
+ }
+
+ drawgfx_transpen(bitmap, cliprect, screen->machine().gfx[2], num, 0, flipx, 0, horz, 16 * i, 0);
+ }
+
+ /* draw alpha numerics */
+ for (i = 0; i < 8; i++)
+ {
+ for (j = 0; j < 32; j++)
+ {
+ int num = state->m_alpha_num_ram[32 * i + j];
+
+ drawgfx_transpen(bitmap, cliprect, screen->machine().gfx[0], num, 0, 0, 0, 8 * j, 8 * i, 0);
+ }
+ }
+
+ /* draw minor objects */
+ for (i = 0; i < 2; i++)
+ {
+ int num = i << 4 | (state->m_minor_obj_ram[i + 0] & 0xf);
+ int horz = 256 - state->m_minor_obj_ram[i + 2];
+ int vert = 256 - state->m_minor_obj_ram[i + 4];
+
+ drawgfx_transpen(bitmap, cliprect, screen->machine().gfx[1], num, 0, 0, 0, horz, vert, 0);
+ }
+
+ /* draw waves */
+ for (i = 0; i < 4; i++)
+ {
+ drawgfx_transpen(bitmap, cliprect, screen->machine().gfx[3], state->m_wavemod ? 1 : 0, 0, 0, 0, 64 * i, 0x4e, 0);
+ }
+
+ /* draw cursor */
+ for (i = 0; i < 256; i++)
+ {
+ if (i & 4)
+ *BITMAP_ADDR16(bitmap, state->m_cursor ^ 0xff, i) = 7;
+ }
+ return 0;
+}
+
+static TIMER_CALLBACK( destroyr_dial_callback )
+{
+ destroyr_state *state = machine.driver_data<destroyr_state>();
+ int dial = param;
+
+ /* Analog inputs come from the player's depth control potentiometer.
+ The voltage is compared to a voltage ramp provided by a discrete
+ analog circuit that conditions the VBLANK signal. When the ramp
+ voltage exceeds the input voltage an NMI signal is generated. The
+ computer then reads the VSYNC data functions to tell where the
+ cursor should be located. */
+
+ state->m_potsense[dial] = 1;
+
+ if (state->m_potmask[dial])
+ {
+ device_set_input_line(state->m_maincpu, INPUT_LINE_NMI, PULSE_LINE);
+ }
+}
+
+
+static TIMER_CALLBACK( destroyr_frame_callback )
+{
+ destroyr_state *state = machine.driver_data<destroyr_state>();
+ state->m_potsense[0] = 0;
+ state->m_potsense[1] = 0;
+
+ /* PCB supports two dials, but cab has only got one */
+ machine.scheduler().timer_set(machine.primary_screen->time_until_pos(input_port_read(machine, "PADDLE")), FUNC(destroyr_dial_callback));
+ machine.scheduler().timer_set(machine.primary_screen->time_until_pos(0), FUNC(destroyr_frame_callback));
+}
+
+
+static MACHINE_RESET( destroyr )
+{
+ destroyr_state *state = machine.driver_data<destroyr_state>();
+
+ machine.scheduler().timer_set(machine.primary_screen->time_until_pos(0), FUNC(destroyr_frame_callback));
+
+ state->m_cursor = 0;
+ state->m_wavemod = 0;
+ state->m_potmask[0] = 0;
+ state->m_potmask[1] = 0;
+ state->m_potsense[0] = 0;
+ state->m_potsense[1] = 0;
+ state->m_attract = 0;
+ state->m_motor_speed = 0;
+ state->m_noise = 0;
+}
+
+
+static WRITE8_HANDLER( destroyr_misc_w )
+{
+ destroyr_state *state = space->machine().driver_data<destroyr_state>();
+
+ /* bits 0 to 2 connect to the sound circuits */
+ state->m_attract = data & 0x01;
+ state->m_noise = data & 0x02;
+ state->m_motor_speed = data & 0x04;
+ state->m_potmask[0] = data & 0x08;
+ state->m_wavemod = data & 0x10;
+ state->m_potmask[1] = data & 0x20;
+
+ coin_lockout_w(space->machine(), 0, !state->m_attract);
+ coin_lockout_w(space->machine(), 1, !state->m_attract);
+}
+
+
+static WRITE8_HANDLER( destroyr_cursor_load_w )
+{
+ destroyr_state *state = space->machine().driver_data<destroyr_state>();
+ state->m_cursor = data;
+ watchdog_reset_w(space, offset, data);
+}
+
+
+static WRITE8_HANDLER( destroyr_interrupt_ack_w )
+{
+ destroyr_state *state = space->machine().driver_data<destroyr_state>();
+ device_set_input_line(state->m_maincpu, 0, CLEAR_LINE);
+}
+
+
+static WRITE8_HANDLER( destroyr_output_w )
+{
+ if (offset & 8) destroyr_misc_w(space, 8, data);
+
+ else switch (offset & 7)
+ {
+ case 0:
+ set_led_status(space->machine(), 0, data & 1);
+ break;
+ case 1:
+ set_led_status(space->machine(), 1, data & 1); /* no second LED present on cab */
+ break;
+ case 2:
+ /* bit 0 => songate */
+ break;
+ case 3:
+ /* bit 0 => launch */
+ break;
+ case 4:
+ /* bit 0 => explosion */
+ break;
+ case 5:
+ /* bit 0 => sonar */
+ break;
+ case 6:
+ /* bit 0 => high explosion */
+ break;
+ case 7:
+ /* bit 0 => low explosion */
+ break;
+ }
+}
+
+
+static READ8_HANDLER( destroyr_input_r )
+{
+ destroyr_state *state = space->machine().driver_data<destroyr_state>();
+
+ if (offset & 1)
+ {
+ return input_port_read(space->machine(), "IN1");
+ }
+
+ else
+ {
+ UINT8 ret = input_port_read(space->machine(), "IN0");
+
+ if (state->m_potsense[0] && state->m_potmask[0])
+ ret |= 4;
+ if (state->m_potsense[1] && state->m_potmask[1])
+ ret |= 8;
+
+ return ret;
+ }
+}
+
+
+static READ8_HANDLER( destroyr_scanline_r )
+{
+ return space->machine().primary_screen->vpos();
+}
+
+
+static ADDRESS_MAP_START( destroyr_map, AS_PROGRAM, 8 )
+ ADDRESS_MAP_GLOBAL_MASK(0x7fff)
+ AM_RANGE(0x0000, 0x00ff) AM_MIRROR(0xf00) AM_RAM
+ AM_RANGE(0x1000, 0x1fff) AM_READWRITE(destroyr_input_r, destroyr_output_w)
+ AM_RANGE(0x2000, 0x2fff) AM_READ_PORT("IN2")
+ AM_RANGE(0x3000, 0x30ff) AM_MIRROR(0xf00) AM_WRITEONLY AM_BASE_MEMBER(destroyr_state, m_alpha_num_ram)
+ AM_RANGE(0x4000, 0x401f) AM_MIRROR(0xfe0) AM_WRITEONLY AM_BASE_MEMBER(destroyr_state, m_major_obj_ram)
+ AM_RANGE(0x5000, 0x5000) AM_MIRROR(0xff8) AM_WRITE(destroyr_cursor_load_w)
+ AM_RANGE(0x5001, 0x5001) AM_MIRROR(0xff8) AM_WRITE(destroyr_interrupt_ack_w)
+ AM_RANGE(0x5002, 0x5007) AM_MIRROR(0xff8) AM_WRITEONLY AM_BASE_MEMBER(destroyr_state, m_minor_obj_ram)
+ AM_RANGE(0x6000, 0x6fff) AM_READ(destroyr_scanline_r)
+ AM_RANGE(0x7000, 0x7fff) AM_ROM
+ADDRESS_MAP_END
+
+
+static INPUT_PORTS_START( destroyr )
+ PORT_START("IN0")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) /* call 7400 */
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_UNUSED ) /* potsense1 */
+ PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_UNUSED ) /* potsense2 */
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_START1 )
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START2 )
+ PORT_DIPNAME( 0xc0, 0x80, "Extended Play" ) PORT_DIPLOCATION("SW2:8,7")
+ PORT_DIPSETTING( 0x40, "1500 points" )
+ PORT_DIPSETTING( 0x80, "2500 points" )
+ PORT_DIPSETTING( 0xc0, "3500 points" )
+ PORT_DIPSETTING( 0x00, "never" )
+
+ PORT_START("IN1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_TILT )
+ PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON2 ) PORT_NAME("Speed Control") PORT_TOGGLE
+ PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 )
+ PORT_SERVICE( 0x08, IP_ACTIVE_LOW )
+ PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_COIN1 )
+ PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_COIN2 )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_VBLANK )
+
+ PORT_START("IN2")
+ PORT_DIPNAME( 0x03, 0x02, DEF_STR( Coinage ) ) PORT_DIPLOCATION("SW:4,3")
+ PORT_DIPSETTING( 0x03, DEF_STR( 2C_1C ) )
+ PORT_DIPSETTING( 0x02, DEF_STR( 1C_1C ) )
+ PORT_DIPSETTING( 0x01, DEF_STR( 1C_2C ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( Free_Play ) )
+ PORT_DIPNAME( 0x0c, 0x08, "Play Time" ) PORT_DIPLOCATION("SW:2,1")
+ PORT_DIPSETTING( 0x00, "50 seconds" )
+ PORT_DIPSETTING( 0x04, "75 seconds" )
+ PORT_DIPSETTING( 0x08, "100 seconds" )
+ PORT_DIPSETTING( 0x0c, "125 seconds" )
+ PORT_DIPNAME( 0x30, 0x00, DEF_STR( Language ) ) PORT_DIPLOCATION("SW2:5,6")
+ PORT_DIPSETTING( 0x30, DEF_STR( German ) )
+ PORT_DIPSETTING( 0x20, DEF_STR( French ) )
+ PORT_DIPSETTING( 0x10, DEF_STR( Spanish ) )
+ PORT_DIPSETTING( 0x00, DEF_STR( English ) )
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_UNUSED )
+
+ PORT_START("PADDLE")
+ PORT_BIT( 0xff, 0x00, IPT_PADDLE_V ) PORT_MINMAX(0,160) PORT_SENSITIVITY(30) PORT_KEYDELTA(10) PORT_CENTERDELTA(0) PORT_REVERSE
+INPUT_PORTS_END
+
+
+static const gfx_layout destroyr_alpha_num_layout =
+{
+ 8, 8, /* width, height */
+ 64, /* total */
+ 1, /* planes */
+ { 0 }, /* plane offsets */
+ {
+ 0x4, 0x5, 0x6, 0x7, 0xC, 0xD, 0xE, 0xF
+ },
+ {
+ 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70
+ },
+ 0x80 /* increment */
+};
+
+
+static const gfx_layout destroyr_minor_object_layout =
+{
+ 16, 16, /* width, height */
+ 32, /* total */
+ 1, /* planes */
+ { 0 }, /* plane offsets */
+ {
+ 0x04, 0x05, 0x06, 0x07, 0x0C, 0x0D, 0x0E, 0x0F,
+ 0x14, 0x15, 0x16, 0x17, 0x1C, 0x1D, 0x1E, 0x1F
+ },
+ {
+ 0x000, 0x020, 0x040, 0x060, 0x080, 0x0a0, 0x0c0, 0x0e0,
+ 0x100, 0x120, 0x140, 0x160, 0x180, 0x1a0, 0x1c0, 0x1e0
+ },
+ 0x200 /* increment */
+};
+
+static const UINT32 destroyr_major_object_layout_xoffset[64] =
+{
+ 0x00, 0x02, 0x04, 0x06, 0x08, 0x0A, 0x0C, 0x0E,
+ 0x10, 0x12, 0x14, 0x16, 0x18, 0x1A, 0x1C, 0x1E,
+ 0x20, 0x22, 0x24, 0x26, 0x28, 0x2A, 0x2C, 0x2E,
+ 0x30, 0x32, 0x34, 0x36, 0x38, 0x3A, 0x3C, 0x3E,
+ 0x40, 0x42, 0x44, 0x46, 0x48, 0x4A, 0x4C, 0x4E,
+ 0x50, 0x52, 0x54, 0x56, 0x58, 0x5A, 0x5C, 0x5E,
+ 0x60, 0x62, 0x64, 0x66, 0x68, 0x6A, 0x6C, 0x6E,
+ 0x70, 0x72, 0x74, 0x76, 0x78, 0x7A, 0x7C, 0x7E
+};
+
+static const gfx_layout destroyr_major_object_layout =
+{
+ 64, 16, /* width, height */
+ 4, /* total */
+ 2, /* planes */
+ { 1, 0 }, /* plane offsets */
+ EXTENDED_XOFFS,
+ {
+ 0x000, 0x080, 0x100, 0x180, 0x200, 0x280, 0x300, 0x380,
+ 0x400, 0x480, 0x500, 0x580, 0x600, 0x680, 0x700, 0x780
+ },
+ 0x0800, /* increment */
+ destroyr_major_object_layout_xoffset,
+ NULL
+};
+
+static const UINT32 destroyr_waves_layout_xoffset[64] =
+{
+ 0x00, 0x01, 0x02, 0x03, 0x08, 0x09, 0x0A, 0x0B,
+ 0x10, 0x11, 0x12, 0x13, 0x18, 0x19, 0x1A, 0x1B,
+ 0x20, 0x21, 0x22, 0x23, 0x28, 0x29, 0x2A, 0x2B,
+ 0x30, 0x31, 0x32, 0x33, 0x38, 0x39, 0x3A, 0x3B,
+ 0x40, 0x41, 0x42, 0x43, 0x48, 0x49, 0x4A, 0x4B,
+ 0x50, 0x51, 0x52, 0x53, 0x58, 0x59, 0x5A, 0x5B,
+ 0x60, 0x61, 0x62, 0x63, 0x68, 0x69, 0x6A, 0x6B,
+ 0x70, 0x71, 0x72, 0x73, 0x78, 0x79, 0x7A, 0x7B
+};
+
+static const gfx_layout destroyr_waves_layout =
+{
+ 64, 2, /* width, height */
+ 2, /* total */
+ 1, /* planes */
+ { 0 },
+ EXTENDED_XOFFS,
+ { 0x00, 0x80 },
+ 0x04, /* increment */
+ destroyr_waves_layout_xoffset,
+ NULL
+};
+
+
+static GFXDECODE_START( destroyr )
+ GFXDECODE_ENTRY( "gfx1", 0, destroyr_alpha_num_layout, 4, 1 )
+ GFXDECODE_ENTRY( "gfx2", 0, destroyr_minor_object_layout, 4, 1 )
+ GFXDECODE_ENTRY( "gfx3", 0, destroyr_major_object_layout, 0, 1 )
+ GFXDECODE_ENTRY( "gfx4", 0, destroyr_waves_layout, 4, 1 )
+GFXDECODE_END
+
+
+static PALETTE_INIT( destroyr )
+{
+ palette_set_color(machine, 0, MAKE_RGB(0x00, 0x00, 0x00)); /* major objects */
+ palette_set_color(machine, 1, MAKE_RGB(0x50, 0x50, 0x50));
+ palette_set_color(machine, 2, MAKE_RGB(0xAF, 0xAF, 0xAF));
+ palette_set_color(machine, 3, MAKE_RGB(0xFF ,0xFF, 0xFF));
+ palette_set_color(machine, 4, MAKE_RGB(0x00, 0x00, 0x00)); /* alpha numerics, waves, minor objects */
+ palette_set_color(machine, 5, MAKE_RGB(0xFF, 0xFF, 0xFF));
+ palette_set_color(machine, 6, MAKE_RGB(0x00, 0x00, 0x00)); /* cursor */
+ palette_set_color(machine, 7, MAKE_RGB(0x78, 0x78, 0x78));
+}
+
+
+static MACHINE_START( destroyr )
+{
+ destroyr_state *state = machine.driver_data<destroyr_state>();
+
+ state->m_maincpu = machine.device("maincpu");
+
+ state->save_item(NAME(state->m_cursor));
+ state->save_item(NAME(state->m_wavemod));
+ state->save_item(NAME(state->m_attract));
+ state->save_item(NAME(state->m_motor_speed));
+ state->save_item(NAME(state->m_noise));
+ state->save_item(NAME(state->m_potmask));
+ state->save_item(NAME(state->m_potsense));
+}
+
+static MACHINE_CONFIG_START( destroyr, destroyr_state )
+
+ /* basic machine hardware */
+ MCFG_CPU_ADD("maincpu", M6800, XTAL_12_096MHz / 16)
+ MCFG_CPU_PROGRAM_MAP(destroyr_map)
+ MCFG_CPU_PERIODIC_INT(irq0_line_assert, 4*60)
+
+ MCFG_MACHINE_START(destroyr)
+ MCFG_MACHINE_RESET(destroyr)
+
+ /* video hardware */
+ MCFG_SCREEN_ADD("screen", RASTER)
+ MCFG_SCREEN_REFRESH_RATE(60)
+ MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16)
+ MCFG_SCREEN_SIZE(256, 262)
+ MCFG_SCREEN_VISIBLE_AREA(0, 255, 0, 239)
+ MCFG_SCREEN_UPDATE(destroyr)
+
+ MCFG_GFXDECODE(destroyr)
+ MCFG_PALETTE_LENGTH(8)
+ MCFG_PALETTE_INIT(destroyr)
+
+ /* sound hardware */
+MACHINE_CONFIG_END
+
+
+ROM_START( destroyr )
+ ROM_REGION( 0x8000, "maincpu", 0 ) /* program code */
+ ROM_LOAD( "language.rom",0x7000, 0x0800, NO_DUMP ) // optional add-on translation rom
+ ROM_LOAD( "30146-01.c3", 0x7800, 0x0800, CRC(e560c712) SHA1(0505ab57eee5421b4ff4e87d14505e02b18fd54c) )
+
+ ROM_REGION( 0x0400, "gfx1", 0 ) /* alpha numerics */
+ ROM_LOAD( "30135-01.p4", 0x0000, 0x0400, CRC(184824cf) SHA1(713cfd1d41ef7b1c345ea0038b652c4ba3f08301) )
+
+ ROM_REGION( 0x0800, "gfx2", 0 ) /* minor objects */
+ ROM_LOAD( "30132-01.f4", 0x0000, 0x0400, CRC(e09d3d55) SHA1(b26013397ef2cb32d0416ecb118387b9c2dffa9a) )
+ ROM_LOAD( "30132-01.k4", 0x0400, 0x0400, CRC(e09d3d55) SHA1(b26013397ef2cb32d0416ecb118387b9c2dffa9a) ) // identical to f4
+
+ ROM_REGION( 0x0400, "gfx3", 0 ) /* major objects */
+ ROM_LOAD_NIB_HIGH( "30134-01.p8", 0x0000, 0x0400, CRC(6259e007) SHA1(049f5f7160305cb4f4b499dd113cb11eea73fc95) )
+ ROM_LOAD_NIB_LOW ( "30133-01.n8", 0x0000, 0x0400, CRC(108d3e2c) SHA1(8c993369d37c6713670483af78e6d04d38f4b4fc) )
+
+ ROM_REGION( 0x0020, "gfx4", 0 ) /* waves */
+ ROM_LOAD( "30136-01.k2", 0x0000, 0x0020, CRC(532c11b1) SHA1(18ab5369a3f2cfcc9a44f38fa8649524bea5b203) )
+
+ ROM_REGION( 0x0100, "user1", 0 ) /* sync (used for vsync/vblank signals, not hooked up yet) */
+ ROM_LOAD( "30131-01.m1", 0x0000, 0x0100, CRC(b8094b4c) SHA1(82dc6799a19984f3b204ee3aeeb007e55afc8be3) )
+ROM_END
+
+ROM_START( destroyr1 )
+ ROM_REGION( 0x8000, "maincpu", 0 ) /* program code */
+ ROM_LOAD( "language.rom",0x7000, 0x0800, NO_DUMP ) // optional add-on translation rom
+ ROM_LOAD_NIB_HIGH( "30142-01.f3", 0x7800, 0x0400, CRC(9e9a08d3) SHA1(eb31bab1537caf43ab8c3d23a6c9cc2009fcb98e) )
+ ROM_LOAD_NIB_LOW ( "30141-01.e2", 0x7800, 0x0400, CRC(c924fbce) SHA1(53aa9a3c4c6e90fb94500ddfa6c2ae3076eee2ef) )
+ ROM_LOAD_NIB_HIGH( "30144-01.j3", 0x7c00, 0x0400, CRC(0c7135c6) SHA1(6a0180353a0a6f34639dadc23179f6323aae8d62) )
+ ROM_LOAD_NIB_LOW ( "30143-01.h2", 0x7c00, 0x0400, CRC(b946e6f0) SHA1(b906024bb0e03a644fff1d5516637c24916b096e) )
+
+ ROM_REGION( 0x0400, "gfx1", 0 ) /* alpha numerics */
+ ROM_LOAD( "30135-01.p4", 0x0000, 0x0400, CRC(184824cf) SHA1(713cfd1d41ef7b1c345ea0038b652c4ba3f08301) )
+
+ ROM_REGION( 0x0800, "gfx2", 0 ) /* minor objects */
+ ROM_LOAD( "30132-01.f4", 0x0000, 0x0400, CRC(e09d3d55) SHA1(b26013397ef2cb32d0416ecb118387b9c2dffa9a) )
+ ROM_LOAD( "30132-01.k4", 0x0400, 0x0400, CRC(e09d3d55) SHA1(b26013397ef2cb32d0416ecb118387b9c2dffa9a) ) // identical to f4
+
+ ROM_REGION( 0x0400, "gfx3", 0 ) /* major objects */
+ ROM_LOAD_NIB_HIGH( "30134-01.p8", 0x0000, 0x0400, CRC(6259e007) SHA1(049f5f7160305cb4f4b499dd113cb11eea73fc95) )
+ ROM_LOAD_NIB_LOW ( "30133-01.n8", 0x0000, 0x0400, CRC(108d3e2c) SHA1(8c993369d37c6713670483af78e6d04d38f4b4fc) )
+
+ ROM_REGION( 0x0020, "gfx4", 0 ) /* waves */
+ ROM_LOAD( "30136-01.k2", 0x0000, 0x0020, CRC(532c11b1) SHA1(18ab5369a3f2cfcc9a44f38fa8649524bea5b203) )
+
+ ROM_REGION( 0x0100, "user1", 0 ) /* sync (used for vsync/vblank signals, not hooked up yet) */
+ ROM_LOAD( "30131-01.m1", 0x0000, 0x0100, CRC(b8094b4c) SHA1(82dc6799a19984f3b204ee3aeeb007e55afc8be3) )
+ROM_END
+
+
+GAMEL( 1977, destroyr, 0, destroyr, destroyr, 0, ORIENTATION_FLIP_X, "Atari", "Destroyer (version O2)", GAME_NO_SOUND, layout_destroyr )
+GAMEL( 1977, destroyr1, destroyr, destroyr, destroyr, 0, ORIENTATION_FLIP_X, "Atari", "Destroyer (version O1)", GAME_NO_SOUND, layout_destroyr )