/*************************************************************************** Atari Orbit Driver game 0 = beginner slow game 1 = beginner medium game 2 = beginner fast game 3 = intermediate slow game 4 = intermediate fast game 5 = expert fast shells only game 6 = expert slow game 7 = expert medium game 8 = expert fast game 9 = super expert Flip screen DIP doesn't work because it's not supported by the game. ***************************************************************************/ #include "emu.h" #include "cpu/m6800/m6800.h" #include "includes/orbit.h" #include "sound/discrete.h" #define MASTER_CLOCK XTAL_12_096MHz /************************************* * * Interrupts and timing * *************************************/ TIMER_DEVICE_CALLBACK_MEMBER(orbit_state::nmi_32v) { int scanline = param; int nmistate = (scanline & 32) && (m_misc_flags & 4); m_maincpu->set_input_line(INPUT_LINE_NMI, nmistate ? ASSERT_LINE : CLEAR_LINE); } TIMER_CALLBACK_MEMBER(orbit_state::irq_off) { m_maincpu->set_input_line(0, CLEAR_LINE); } INTERRUPT_GEN_MEMBER(orbit_state::orbit_interrupt) { device.execute().set_input_line(0, ASSERT_LINE); machine().scheduler().timer_set(machine().primary_screen->time_until_vblank_end(), timer_expired_delegate(FUNC(orbit_state::irq_off),this)); } /************************************* * * Bit flags * *************************************/ static void update_misc_flags(address_space &space, UINT8 val) { orbit_state *state = space.machine().driver_data(); state->m_misc_flags = val; /* BIT0 => UNUSED */ /* BIT1 => LOCKOUT */ /* BIT2 => NMI ENABLE */ /* BIT3 => HEAT RST LED */ /* BIT4 => PANEL BUS OC */ /* BIT5 => PANEL STROBE */ /* BIT6 => HYPER LED */ /* BIT7 => WARNING SND */ discrete_sound_w(state->m_discrete, space, ORBIT_WARNING_EN, BIT(state->m_misc_flags, 7)); set_led_status(space.machine(), 0, BIT(state->m_misc_flags, 3)); set_led_status(space.machine(), 1, BIT(state->m_misc_flags, 6)); coin_lockout_w(space.machine(), 0, !BIT(state->m_misc_flags, 1)); coin_lockout_w(space.machine(), 1, !BIT(state->m_misc_flags, 1)); } WRITE8_MEMBER(orbit_state::orbit_misc_w) { UINT8 bit = offset >> 1; if (offset & 1) update_misc_flags(space, m_misc_flags | (1 << bit)); else update_misc_flags(space, m_misc_flags & ~(1 << bit)); } /************************************* * * Address maps * *************************************/ static ADDRESS_MAP_START( orbit_map, AS_PROGRAM, 8, orbit_state ) ADDRESS_MAP_GLOBAL_MASK(0x7fff) AM_RANGE(0x0000, 0x00ff) AM_MIRROR(0x0700) AM_RAM AM_RANGE(0x0800, 0x0800) AM_MIRROR(0x07ff) AM_READ_PORT("P1") AM_RANGE(0x1000, 0x1000) AM_MIRROR(0x07ff) AM_READ_PORT("P2") AM_RANGE(0x1800, 0x1800) AM_MIRROR(0x07ff) AM_READ_PORT("DSW1") AM_RANGE(0x2000, 0x2000) AM_MIRROR(0x07ff) AM_READ_PORT("DSW2") AM_RANGE(0x2800, 0x2800) AM_MIRROR(0x07ff) AM_READ_PORT("BUTTONS") AM_RANGE(0x3000, 0x33bf) AM_MIRROR(0x0400) AM_RAM_WRITE(orbit_playfield_w) AM_SHARE("playfield_ram") AM_RANGE(0x33c0, 0x33ff) AM_MIRROR(0x0400) AM_RAM AM_SHARE("sprite_ram") AM_RANGE(0x3800, 0x3800) AM_MIRROR(0x00ff) AM_WRITE(orbit_note_w) AM_RANGE(0x3900, 0x3900) AM_MIRROR(0x00ff) AM_WRITE(orbit_noise_amp_w) AM_RANGE(0x3a00, 0x3a00) AM_MIRROR(0x00ff) AM_WRITE(orbit_note_amp_w) AM_RANGE(0x3c00, 0x3c0f) AM_MIRROR(0x00f0) AM_WRITE(orbit_misc_w) AM_RANGE(0x3e00, 0x3e00) AM_MIRROR(0x00ff) AM_WRITE(orbit_noise_rst_w) AM_RANGE(0x3f00, 0x3f00) AM_MIRROR(0x00ff) AM_WRITE(watchdog_reset_w) AM_RANGE(0x6000, 0x7fff) AM_ROM ADDRESS_MAP_END /************************************* * * Port definitions * *************************************/ static INPUT_PORTS_START( orbit ) PORT_START("P1") /* 0800 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(1) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(1) /* actually buttons */ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(1) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(1) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_TILT ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_START("P2") /* 1000 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) /* actually buttons */ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_PLAYER(2) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_SERVICE( 0x40, IP_ACTIVE_LOW ) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_START("DSW1") /* 1800 */ PORT_DIPNAME( 0x07, 0x00, "Play Time Per Credit" ) PORT_DIPLOCATION("DSW1:1,2,3") PORT_DIPSETTING( 0x00, "0:30" ) PORT_DIPSETTING( 0x01, "1:00" ) PORT_DIPSETTING( 0x02, "1:30" ) PORT_DIPSETTING( 0x03, "2:00" ) PORT_DIPSETTING( 0x04, "2:30" ) PORT_DIPSETTING( 0x05, "3:00" ) PORT_DIPSETTING( 0x06, "3:30" ) PORT_DIPSETTING( 0x07, "4:00" ) PORT_DIPNAME( 0x18, 0x00, DEF_STR( Language ) ) PORT_DIPLOCATION("DSW1:4,5") PORT_DIPSETTING( 0x00, DEF_STR( English ) ) PORT_DIPSETTING( 0x08, DEF_STR( Spanish ) ) PORT_DIPSETTING( 0x10, DEF_STR( French ) ) PORT_DIPSETTING( 0x18, DEF_STR( German ) ) PORT_DIPNAME( 0x20, 0x00, DEF_STR( Free_Play )) PORT_DIPLOCATION("DSW1:6") PORT_DIPSETTING( 0x00, DEF_STR( Off )) PORT_DIPSETTING( 0x20, DEF_STR( On )) PORT_DIPUNUSED_DIPLOC( 0x40, 0x00, "DSW1:7" ) PORT_DIPUNUSED_DIPLOC( 0x80, 0x00, "DSW1:8" ) PORT_START("DSW2") /* 2000 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game Reset") PORT_CODE(KEYCODE_PLUS_PAD) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 9") PORT_CODE(KEYCODE_9_PAD) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 8") PORT_CODE(KEYCODE_8_PAD) PORT_DIPNAME( 0x08, 0x00, DEF_STR( Flip_Screen )) PORT_DIPSETTING( 0x00, DEF_STR( Off )) PORT_DIPSETTING( 0x08, DEF_STR( On )) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Heat Reset") PORT_CODE(KEYCODE_ENTER_PAD) PORT_DIPNAME( 0x20, 0x20, "NEXT TEST" ) /* should be off */ PORT_DIPSETTING( 0x20, DEF_STR( Off )) PORT_DIPSETTING( 0x00, DEF_STR( On )) PORT_DIPNAME( 0x40, 0x40, "DIAG TEST" ) /* should be off */ PORT_DIPSETTING( 0x40, DEF_STR( Off )) PORT_DIPSETTING( 0x00, DEF_STR( On )) PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_VBLANK("screen") PORT_START("BUTTONS") /* 2800 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 7 / Strong Gravity") PORT_CODE(KEYCODE_7_PAD) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 6 / Stars") PORT_CODE(KEYCODE_6_PAD) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 5 / Unlimited Supplies") PORT_CODE(KEYCODE_5_PAD) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 4 / Space Stations") PORT_CODE(KEYCODE_4_PAD) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 3 / Black Hole") PORT_CODE(KEYCODE_3_PAD) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 2 / Zero Gravity") PORT_CODE(KEYCODE_2_PAD) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 1 / Negative Gravity") PORT_CODE(KEYCODE_1_PAD) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("Game 0 / Bounce Back") PORT_CODE(KEYCODE_0_PAD) INPUT_PORTS_END /************************************* * * Graphics layouts * *************************************/ static const gfx_layout orbit_full_sprite_layout = { 8, 32, RGN_FRAC(1,1), 1, { 0 }, { STEP8(0,1) }, { STEP32(0,8) }, 0x100 }; static const gfx_layout orbit_upper_sprite_layout = { 8, 16, RGN_FRAC(1,1), 1, { 0 }, { STEP8(0,1) }, { STEP16(0,8) }, 0x100 }; static const gfx_layout orbit_lower_sprite_layout = { 8, 16, RGN_FRAC(1,1), 1, { 0 }, { STEP8(0,1) }, { STEP16(0x80,8) }, 0x100 }; static const gfx_layout orbit_tile_layout = { 8, 8, RGN_FRAC(1,1), 1, { 0 }, { STEP8(0,1) }, { STEP8(0,8) }, 0x40 }; static GFXDECODE_START( orbit ) GFXDECODE_ENTRY( "gfx1", 0, orbit_full_sprite_layout, 0, 1 ) GFXDECODE_ENTRY( "gfx1", 0, orbit_upper_sprite_layout, 0, 1 ) GFXDECODE_ENTRY( "gfx1", 0, orbit_lower_sprite_layout, 0, 1 ) GFXDECODE_SCALE( "gfx2", 0, orbit_tile_layout, 0, 1, 2, 2 ) GFXDECODE_END /************************************* * * Machine setup * *************************************/ void orbit_state::machine_start() { m_maincpu = machine().device("maincpu"); save_item(NAME(m_misc_flags)); save_item(NAME(m_flip_screen)); } void orbit_state::machine_reset() { update_misc_flags(generic_space(), 0); m_flip_screen = 0; } /************************************* * * Machine drivers * *************************************/ static MACHINE_CONFIG_START( orbit, orbit_state ) /* basic machine hardware */ MCFG_CPU_ADD("maincpu", M6800, MASTER_CLOCK / 16) MCFG_CPU_PROGRAM_MAP(orbit_map) MCFG_CPU_VBLANK_INT_DRIVER("screen", orbit_state, orbit_interrupt) MCFG_TIMER_DRIVER_ADD_SCANLINE("32v", orbit_state, nmi_32v, "screen", 0, 32) /* video hardware */ MCFG_SCREEN_ADD("screen", RASTER) MCFG_SCREEN_RAW_PARAMS(MASTER_CLOCK*2, 384*2, 0, 256*2, 261*2, 0, 240*2) MCFG_SCREEN_UPDATE_DRIVER(orbit_state, screen_update_orbit) MCFG_GFXDECODE(orbit) MCFG_PALETTE_LENGTH(2) MCFG_PALETTE_INIT(black_and_white) /* sound hardware */ MCFG_SPEAKER_STANDARD_STEREO("lspeaker", "rspeaker") MCFG_SOUND_ADD("discrete", DISCRETE, 0) MCFG_SOUND_CONFIG_DISCRETE(orbit) MCFG_SOUND_ROUTE(0, "lspeaker", 1.0) MCFG_SOUND_ROUTE(1, "rspeaker", 1.0) MACHINE_CONFIG_END /************************************* * * ROM definitions * *************************************/ ROM_START( orbit ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD_NIB_LOW ( "033701.h2", 0x6800, 0x400, CRC(6de43b85) SHA1(1643972f45d3a0dd6540158c575cd84cee2b0c9a) ) ROM_LOAD_NIB_HIGH( "033693.l2", 0x6800, 0x400, CRC(8878409e) SHA1(a14e0161705bbc230f0aec1837ebc41d62178368) ) ROM_LOAD_NIB_LOW ( "033702.h1", 0x6C00, 0x400, CRC(8166bdcb) SHA1(b7ae6cd46b4aff6e1e1ec9273cf068dec4a8cd46) ) ROM_LOAD_NIB_HIGH( "033694.l1", 0x6C00, 0x400, CRC(5337a8ee) SHA1(1606bfa652bb5253c387f11c96d77d7a84983344) ) ROM_LOAD_NIB_LOW ( "033699.f2", 0x7000, 0x400, CRC(b498b36f) SHA1(5d150af193196fccd7c20ba731a020a9ae75e516) ) ROM_LOAD_NIB_HIGH( "033691.m2", 0x7000, 0x400, CRC(6cbabb21) SHA1(fffb3f7be73c72b4775d8cdfe174c75ae4389cba) ) ROM_LOAD_NIB_LOW ( "033700.f1", 0x7400, 0x400, CRC(9807c922) SHA1(b6b62530b24d967104f632540ef98f2b4780c3ed) ) ROM_LOAD_NIB_HIGH( "033692.m1", 0x7400, 0x400, CRC(96167d1b) SHA1(6f272b2f1b30aa94f51ea5710f4114bfdea19f2c) ) ROM_LOAD_NIB_LOW ( "033697.e2", 0x7800, 0x400, CRC(19ccf0dc) SHA1(7d12c4985bd0a25ef518246faf2849e5a0cf600b) ) ROM_LOAD_NIB_HIGH( "033689.n2", 0x7800, 0x400, CRC(ea3b70c1) SHA1(5e985fed057f362deaeb5e4049c4e8c1d449d6e1) ) ROM_LOAD_NIB_LOW ( "033698.e1", 0x7C00, 0x400, CRC(356a7c32) SHA1(a3496c0f9d9f3e2e0b452cdc0e908dc93d179990) ) ROM_RELOAD( 0xFC00, 0x400 ) ROM_LOAD_NIB_HIGH( "033690.n1", 0x7C00, 0x400, CRC(f756ebd4) SHA1(4e473541b712078c6a81901714a6243de348e543) ) ROM_RELOAD( 0xFC00, 0x400 ) ROM_REGION( 0x1000, "gfx1", 0 ) /* sprites */ ROM_LOAD( "033712.b7", 0x0000, 0x800, CRC(cfd43bf2) SHA1(dbca0da6ed355aac921bae5adeef2f384f5fa2c3) ) ROM_LOAD( "033713.d7", 0x0800, 0x800, CRC(5ac89f4d) SHA1(747889b33cd83510a640e68fb4581a3e881c43a3) ) ROM_REGION( 0x200, "gfx2", 0 ) /* tiles */ ROM_LOAD( "033711.a7", 0x0000, 0x200, CRC(9987174a) SHA1(d2117b6e6d64c29aef8ad8c94256baea493bce5c) ) ROM_REGION( 0x100, "proms", 0 ) /* sync, unused */ ROM_LOAD( "033688.p6", 0x0000, 0x100, CRC(ee66ddba) SHA1(5b9ae4cbf019375c8d54528b69280413c641c4f2) ) ROM_END /************************************* * * Game drivers * *************************************/ GAME( 1978, orbit, 0, orbit, orbit, driver_device, 0, 0, "Atari", "Orbit", GAME_SUPPORTS_SAVE )