// license:BSD-3-Clause // copyright-holders:Frank Palazzolo /**************************************************************************** Sega "Space Tactics" Driver Frank Palazzolo (palazzol@home.com) Master processor - Intel 8080A Memory Map: 0000-2fff ROM R 4000-47ff RAM R/W 5000-5fff switches/status R 6000-6fff dips sw R 6000-600f Coin rjct/palette select W 6010-601f sound triggers W 6020-602f lamp latch W 6030-603f speed latch W 6040-605f shot related W 6060-606f score display W 60a0-60e0 sound triggers2 W 7000-7fff RNG/swit R LS Nibble are a VBlank counter used as a RNG 8000-8fff swit/stat R 8000-8fff offset RAM W 9000-9fff V pos reg. R Reads counter from an encoder wheel a000-afff H pos reg. R Reads counter from an encoder wheel b000-bfff VRAM B R/W alphanumerics, bases, barrier, enemy bombs d000-dfff VRAM D R/W furthest aliens (scrolling) e000-efff VRAM E R/W middle aliens (scrolling) f000-ffff VRAM F R/W closest aliens (scrolling) -------------------------------------------------------------------- At this time, emulation is missing: Sound (all discrete and a 76477) Verify Color PROM resistor values (Last 8 colors) ****************************************************************************/ #include "emu.h" #include "includes/stactics.h" #include "stactics.lh" #include "cpu/i8085/i8085.h" /************************************* * * Mirror motor handling * *************************************/ WRITE_LINE_MEMBER(stactics_state::motor_w) { m_motor_on = state; } READ_LINE_MEMBER(stactics_state::motor_not_ready_r) { // if the motor is self-centering, but not centered yet return (!m_motor_on && (m_horiz_pos != 0 || m_vert_pos != 0)); } READ8_MEMBER(stactics_state::vert_pos_r) { return 0x70 - m_vert_pos; } READ8_MEMBER(stactics_state::horiz_pos_r) { return m_horiz_pos + 0x88; } void stactics_state::move_motor() { // monitor motor under joystick control if (m_motor_on) { const int in3 = m_in3->read(); const int in4 = m_fake->read(); /* up */ if (!(in4 & 0x01) && m_vert_pos > -128) m_vert_pos--; /* down */ if (!(in4 & 0x02) && m_vert_pos < 127) m_vert_pos++; /* left */ if (!(in3 & 0x20) && m_horiz_pos < 127) m_horiz_pos++; /* right */ if (!(in3 & 0x40) && m_horiz_pos > -128) m_horiz_pos--; } /* monitor motor under self-centering control */ else { if (m_horiz_pos > 0) m_horiz_pos--; else if (m_horiz_pos < 0) m_horiz_pos++; if (m_vert_pos > 0) m_vert_pos--; else if (m_vert_pos < 0) m_vert_pos++; } } /************************************* * * Random number generator * *************************************/ CUSTOM_INPUT_MEMBER(stactics_state::get_rng) { /* this is a 555 timer, but cannot read one of the resistor values */ return machine().rand() & 0x07; } /************************************* * * Coin lockout * *************************************/ WRITE_LINE_MEMBER(stactics_state::coin_lockout_1_w) { machine().bookkeeping().coin_lockout_w(0, !state); } WRITE_LINE_MEMBER(stactics_state::coin_lockout_2_w) { machine().bookkeeping().coin_lockout_w(1, !state); } /************************************* * * Interrupt system * *************************************/ INTERRUPT_GEN_MEMBER(stactics_state::interrupt) { move_motor(); device.execute().set_input_line(0, HOLD_LINE); } /************************************* * * Data CPU memory handlers * *************************************/ void stactics_state::main_map(address_map &map) { map(0x0000, 0x2fff).rom(); map(0x4000, 0x40ff).mirror(0x0700).ram(); map(0x5000, 0x5000).mirror(0x0fff).portr("IN0"); map(0x6000, 0x6000).mirror(0x0fff).portr("IN1"); map(0x6000, 0x6007).mirror(0x0f08).w(m_outlatch, FUNC(ls259_device::write_d0)); map(0x6010, 0x6017).mirror(0x0f08).w("audiolatch", FUNC(ls259_device::write_d0)); map(0x6020, 0x6027).mirror(0x0f08).w("lamplatch", FUNC(ls259_device::write_d0)); map(0x6030, 0x6030).mirror(0x0f0f).w(FUNC(stactics_state::speed_latch_w)); map(0x6040, 0x6040).mirror(0x0f0f).w(FUNC(stactics_state::shot_trigger_w)); map(0x6050, 0x6050).mirror(0x0f0f).w(FUNC(stactics_state::shot_flag_clear_w)); map(0x6060, 0x606f).mirror(0x0f00).writeonly().share("display_buffer"); map(0x6070, 0x609f).mirror(0x0f00).nopw(); /* map(0x60a0, 0x60ef).mirror(0x0f00).w(FUNC(stactics_state::sound2_w)); */ map(0x60f0, 0x60ff).mirror(0x0f00).nopw(); map(0x7000, 0x7000).mirror(0x0fff).portr("IN2"); map(0x8000, 0x8000).mirror(0x0fff).portr("IN3"); map(0x8000, 0x87ff).mirror(0x0800).w(FUNC(stactics_state::scroll_ram_w)); map(0x9000, 0x9000).mirror(0x0fff).r(FUNC(stactics_state::vert_pos_r)); map(0xa000, 0xa000).mirror(0x0fff).r(FUNC(stactics_state::horiz_pos_r)); map(0xb000, 0xbfff).ram().share("videoram_b"); map(0xc000, 0xcfff).noprw(); map(0xd000, 0xdfff).ram().share("videoram_d"); map(0xe000, 0xefff).ram().share("videoram_e"); map(0xf000, 0xffff).ram().share("videoram_f"); } /************************************* * * Input port definitions * *************************************/ static INPUT_PORTS_START( stactics ) PORT_START("IN0") /* IN0 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON7 ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_BUTTON6 ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON5 ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON4 ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON3 ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_START1 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_MEMBER(stactics_state, motor_not_ready_r) PORT_START("IN1") /* IN1 */ PORT_DIPNAME( 0x07, 0x07, DEF_STR( Coin_B ) ) PORT_DIPSETTING( 0x01, DEF_STR( 4C_1C ) ) PORT_DIPSETTING( 0x05, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x07, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x06, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x04, DEF_STR( 1C_3C ) ) PORT_DIPSETTING( 0x02, DEF_STR( 1C_4C ) ) PORT_DIPSETTING( 0x00, DEF_STR( 1C_5C ) ) PORT_DIPSETTING( 0x03, DEF_STR( 1C_6C ) ) PORT_DIPNAME( 0x38, 0x38, DEF_STR( Coin_A ) ) PORT_DIPSETTING( 0x08, DEF_STR( 4C_1C ) ) PORT_DIPSETTING( 0x28, DEF_STR( 2C_1C ) ) PORT_DIPSETTING( 0x38, DEF_STR( 1C_1C ) ) PORT_DIPSETTING( 0x30, DEF_STR( 1C_2C ) ) PORT_DIPSETTING( 0x20, DEF_STR( 1C_3C ) ) PORT_DIPSETTING( 0x10, DEF_STR( 1C_4C ) ) PORT_DIPSETTING( 0x00, DEF_STR( 1C_5C ) ) PORT_DIPSETTING( 0x18, DEF_STR( 1C_6C ) ) PORT_DIPNAME( 0x40, 0x00, "High Score Initial Entry" ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_DIPNAME( 0x80, 0x00, DEF_STR( Demo_Sounds ) ) PORT_DIPSETTING( 0x80, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_START("IN2") /* IN2 */ PORT_BIT( 0x07, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_CUSTOM_MEMBER(stactics_state, get_rng) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_MEMBER(stactics_state, frame_count_d3_r) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_COIN1 ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_COIN2 ) PORT_DIPNAME( 0x40, 0x40, DEF_STR( Free_Play ) ) PORT_DIPSETTING( 0x40, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_SERVICE( 0x80, IP_ACTIVE_LOW ) PORT_START("IN3") /* IN3 */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_MEMBER(stactics_state, shot_standby_r) PORT_DIPNAME( 0x04, 0x04, "Number of Barriers" ) PORT_DIPSETTING( 0x04, "4" ) PORT_DIPSETTING( 0x00, "6" ) PORT_DIPNAME( 0x08, 0x08, "Bonus Barriers" ) PORT_DIPSETTING( 0x08, "1" ) PORT_DIPSETTING( 0x00, "2" ) PORT_DIPNAME( 0x10, 0x00, "Extended Play" ) PORT_DIPSETTING( 0x10, DEF_STR( Off ) ) PORT_DIPSETTING( 0x00, DEF_STR( On ) ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_CUSTOM ) PORT_READ_LINE_MEMBER(stactics_state, not_shot_arrive_r) PORT_START("FAKE") /* FAKE */ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_8WAY PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_8WAY INPUT_PORTS_END /************************************* * * Start * *************************************/ void stactics_state::machine_start() { m_vert_pos = 0; m_horiz_pos = 0; m_motor_on = false; save_item(NAME(m_vert_pos)); save_item(NAME(m_horiz_pos)); save_item(NAME(m_motor_on)); } /************************************* * * Machine driver * *************************************/ void stactics_state::stactics(machine_config &config) { /* basic machine hardware */ I8080(config, m_maincpu, 1933560); m_maincpu->set_addrmap(AS_PROGRAM, &stactics_state::main_map); m_maincpu->set_vblank_int("screen", FUNC(stactics_state::interrupt)); LS259(config, m_outlatch); // 50 m_outlatch->q_out_cb<0>().set(FUNC(stactics_state::coin_lockout_1_w)); // COIN REJECT 1 m_outlatch->q_out_cb<1>().set(FUNC(stactics_state::coin_lockout_2_w)); // COIN REJECT 2 m_outlatch->q_out_cb<6>().set(FUNC(stactics_state::palette_bank_w)); // FLM COL 0 m_outlatch->q_out_cb<7>().set(FUNC(stactics_state::palette_bank_w)); // FLM COL 1 ls259_device &audiolatch(LS259(config, "audiolatch")); // 58 - TODO: implement these switches audiolatch.q_out_cb<0>().set_nop(); // MUTE audiolatch.q_out_cb<1>().set_nop(); // INV. DISTANCE A audiolatch.q_out_cb<2>().set_nop(); // INV. DISTANCE B audiolatch.q_out_cb<3>().set_nop(); // UFO audiolatch.q_out_cb<4>().set_nop(); // INVADER audiolatch.q_out_cb<5>().set_nop(); // EMEGENCY (sic) audiolatch.q_out_cb<6>().set(FUNC(stactics_state::motor_w)); // overlaps rocket sound audiolatch.q_out_cb<7>().set_nop(); // SOUND ON ls259_device &lamplatch(LS259(config, "lamplatch")); // 96 lamplatch.q_out_cb<0>().set(FUNC(stactics_state::base_lamp_w<4>)); lamplatch.q_out_cb<1>().set(FUNC(stactics_state::base_lamp_w<3>)); lamplatch.q_out_cb<2>().set(FUNC(stactics_state::base_lamp_w<2>)); lamplatch.q_out_cb<3>().set(FUNC(stactics_state::base_lamp_w<1>)); lamplatch.q_out_cb<4>().set(FUNC(stactics_state::base_lamp_w<0>)); lamplatch.q_out_cb<5>().set(FUNC(stactics_state::start_lamp_w)); lamplatch.q_out_cb<6>().set(FUNC(stactics_state::barrier_lamp_w)); /* video hardware */ stactics_video(config); /* audio hardware */ } /************************************* * * ROM definition * *************************************/ ROM_START( stactics ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "epr-218x", 0x0000, 0x0800, CRC(b1186ad2) SHA1(88929a183ac0499619b3e07241f3b5a0c89bdab1) ) ROM_LOAD( "epr-219x", 0x0800, 0x0800, CRC(3b86036d) SHA1(6ad5e14dcfdbc6d2a0a32ae7f18ce41ab4b51eec) ) ROM_LOAD( "epr-220x", 0x1000, 0x0800, CRC(c58702da) SHA1(93936c46810722d435f9ddb0641defb741743dee) ) ROM_LOAD( "epr-221x", 0x1800, 0x0800, CRC(e327639e) SHA1(024929b65c71eaeb6d234a14d7535a7d5b98b8d3) ) ROM_LOAD( "epr-222y", 0x2000, 0x0800, CRC(24dd2bcc) SHA1(f77c59beccc1a77e3bfc2928ff532d6e221ff42d) ) ROM_LOAD( "epr-223x", 0x2800, 0x0800, CRC(7fef0940) SHA1(5b2af55f75ef0130f9202b6a916a96dbd601fcfa) ) ROM_REGION( 0x1040, "proms", 0 ) ROM_LOAD( "pr54", 0x0000, 0x0800, CRC(9640bd6e) SHA1(dd12952a6591f2056ac1b5688dca0a3a2ef69f2d) ) /* color/priority PROM */ ROM_LOAD( "pr55", 0x0800, 0x0800, CRC(f162673b) SHA1(83743780b6c1f8014df24fa0650000b7cb137d92) ) /* timing PROM (unused) */ ROM_LOAD( "pr65", 0x1000, 0x0020, CRC(a1506b9d) SHA1(037c3db2ea40eca459e8acba9d1506dd28d72d10) ) /* timing PROM (unused) */ ROM_LOAD( "pr66", 0x1020, 0x0020, CRC(78dcf300) SHA1(37034cc0cfa4a8ec47937a2a34b77ec56b387a9b) ) /* timing PROM (unused) */ ROM_REGION( 0x0820, "user1", 0 ) ROM_LOAD( "epr-217", 0x0000, 0x0800, CRC(38259f5f) SHA1(1f4182ffc2d78fca22711526bb2ae2cfe040173c) ) /* LED fire beam data */ ROM_LOAD( "pr67", 0x0800, 0x0020, CRC(b27874e7) SHA1(c24bc78c4b2ae01aaed5d994ce2e7c5e0f2eece8) ) /* LED timing ROM (unused) */ ROM_END /************************************* * * Game driver * *************************************/ GAMEL( 1981, stactics, 0, stactics, stactics, stactics_state, empty_init, ORIENTATION_FLIP_X, "Sega", "Space Tactics", MACHINE_NO_SOUND | MACHINE_SUPPORTS_SAVE, layout_stactics )