// license:BSD-3-Clause // copyright-holders:hap // thanks-to:Berger /****************************************************************************** Mephisto MM I, the first H+G slide-in chesscomputer module The module was included with either the Modular or Modular Exclusive chessboards. Initially, the module itself didn't have a name. It was only later in retrospect, after the release of Modul MM II that it became known as the MM I. The program is actually more like a prequel of III-S Glasgow, same chess engine authors too. Hardware notes: - PCB label: HGS 10 121 01 - CDP1806 @ 8MHz, 6.5V (IRQ from internal timer) - 32KB ROM (2*D27128, or HN613256P) - 4KB RAM (2*HM6116LP-3) - CDP1853CE, CD4011BE, 3*40373BP, 4556BE - modular slot, 18-button keypad, beeper It supports the HG 170 opening book module. LCD module is assumed to be same as MM II and others. Mephisto Mirage is on similar hardware, but it's a single module (LCD is included on the main PCB). Like MM I, the module by itself didn't have a name at first. The boards that were included with the product were either Mephisto Mobil, or Mephisto Mirage (both ledless, push-sensory). The module also works on the more expensive wooden chessboards like Modular Exclusive or Muenchen, as long as it supports the higher voltage. TODO: - remove external interrupt hack when timer interrupt is added to CDP1806 device - mmirage unknown_w - mm1 unknown expansion rom at $c000? - add mm1 STP/ON buttons? (they're off/on, game continues when ON again) ******************************************************************************/ #include "emu.h" #include "cpu/cosmac/cosmac.h" #include "machine/sensorboard.h" #include "sound/dac.h" #include "sound/volt_reg.h" #include "video/pwm.h" #include "bus/generic/slot.h" #include "bus/generic/carts.h" #include "speaker.h" // internal artwork #include "mephisto_mm1.lh" // clickable #include "mephisto_mirage.lh" // clickable namespace { class mm1_state : public driver_device { public: mm1_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_board(*this, "board"), m_display(*this, "display"), m_dac(*this, "dac"), m_inputs(*this, "IN.%u", 0) { } DECLARE_INPUT_CHANGED_MEMBER(mirage_switch_sensor_type); // machine drivers void mirage(machine_config &config); void mm1(machine_config &config); protected: virtual void machine_start() override; virtual void machine_reset() override; private: // devices/pointers required_device m_maincpu; required_device m_board; required_device m_display; required_device m_dac; required_ioport_array<8> m_inputs; // address maps void mirage_map(address_map &map); void mm1_map(address_map &map); void mm1_io(address_map &map); // I/O handlers INTERRUPT_GEN_MEMBER(interrupt); void update_display(); DECLARE_READ_LINE_MEMBER(clear_r); DECLARE_WRITE_LINE_MEMBER(q_w); DECLARE_WRITE8_MEMBER(sound_w); DECLARE_WRITE8_MEMBER(unknown_w); DECLARE_WRITE8_MEMBER(lcd_w); DECLARE_WRITE8_MEMBER(board_w); DECLARE_WRITE8_MEMBER(led_w); DECLARE_WRITE8_MEMBER(keypad_w); DECLARE_READ8_MEMBER(board_r); template DECLARE_READ_LINE_MEMBER(keypad_r); bool m_reset; u8 m_lcd_mask; u8 m_digit_idx; u8 m_digit_data[4]; u8 m_kp_mux; u8 m_cb_mux; u8 m_led_data; }; void mm1_state::machine_start() { // zerofill m_reset = false; m_lcd_mask = 0; m_digit_idx = 0; memset(m_digit_data, 0, sizeof(m_digit_data)); m_kp_mux = 0; m_cb_mux = 0; m_led_data = 0; // register for savestates save_item(NAME(m_reset)); save_item(NAME(m_lcd_mask)); save_item(NAME(m_digit_idx)); save_item(NAME(m_digit_data)); save_item(NAME(m_kp_mux)); save_item(NAME(m_cb_mux)); save_item(NAME(m_led_data)); } void mm1_state::machine_reset() { m_reset = true; m_digit_idx = 0; } /****************************************************************************** I/O ******************************************************************************/ INTERRUPT_GEN_MEMBER(mm1_state::interrupt) { m_maincpu->set_input_line(COSMAC_INPUT_LINE_INT, HOLD_LINE); } READ_LINE_MEMBER(mm1_state::clear_r) { // CLEAR low + RESET high resets cpu int ret = (m_reset) ? 0 : 1; m_reset = false; return ret; } WRITE_LINE_MEMBER(mm1_state::q_w) { // Q: LCD digit data mask // also assume LCD update on rising edge if (state && !m_lcd_mask) { for (int i = 0; i < 4; i++) m_display->write_row(i, m_digit_data[i]); m_display->update(); } m_lcd_mask = state ? 0xff : 0; } WRITE8_MEMBER(mm1_state::lcd_w) { // d0-d7: write/shift LCD digit (4*CD4015) // note: last digit "dp" is the colon in the middle m_digit_data[m_digit_idx] = data ^ m_lcd_mask; m_digit_idx = (m_digit_idx + 1) & 3; } WRITE8_MEMBER(mm1_state::sound_w) { // d0: speaker out m_dac->write(~data & 1); } WRITE8_MEMBER(mm1_state::unknown_w) { // mmirage: unused serial device? } void mm1_state::update_display() { // 64 chessboard leds m_display->matrix_partial(4, 8, m_cb_mux, m_led_data); } WRITE8_MEMBER(mm1_state::led_w) { // d0-d7: chessboard led data m_led_data = data; update_display(); } WRITE8_MEMBER(mm1_state::board_w) { // d0-d7: chessboard input/led mux m_cb_mux = ~data; update_display(); } READ8_MEMBER(mm1_state::board_r) { u8 data = 0; // d0-d7: multiplexed inputs (chessboard) for (int i = 0; i < 8; i++) if (BIT(m_cb_mux, i)) data |= m_board->read_rank(i); return ~data; } WRITE8_MEMBER(mm1_state::keypad_w) { // d0-d7: keypad input mux m_kp_mux = ~data; } template READ_LINE_MEMBER(mm1_state::keypad_r) { u8 data = 0; // EF3,EF4: multiplexed inputs (keypad) for (int i = 0; i < 8; i++) if (BIT(m_kp_mux, i)) data |= m_inputs[i]->read(); return data >> P & 1; } /****************************************************************************** Address Maps ******************************************************************************/ void mm1_state::mirage_map(address_map &map) { map(0x0000, 0x7fff).rom().nopw(); map(0xd000, 0xdfff).mirror(0x2000).ram(); } void mm1_state::mm1_map(address_map &map) { mirage_map(map); map(0x8000, 0xbfff).r("cartslot", FUNC(generic_slot_device::read_rom)); // opening library map(0xc000, 0xc000).nopr(); // looks for $c0, jumps to $c003 if true } void mm1_state::mm1_io(address_map &map) { map(0x01, 0x01).w(FUNC(mm1_state::sound_w)); map(0x02, 0x02).w(FUNC(mm1_state::keypad_w)); map(0x03, 0x03).r(FUNC(mm1_state::board_r)); map(0x04, 0x04).w(FUNC(mm1_state::board_w)); map(0x05, 0x05).w(FUNC(mm1_state::led_w)); map(0x06, 0x06).w(FUNC(mm1_state::lcd_w)); map(0x07, 0x07).w(FUNC(mm1_state::unknown_w)); } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( mm1 ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("E / 5 / Rook") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_9) PORT_CODE(KEYCODE_9_PAD) PORT_CODE(KEYCODE_LEFT) PORT_NAME("Left / Black / 9") PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("INFO") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL") PORT_START("IN.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) PORT_CODE(KEYCODE_RIGHT) PORT_NAME("Right / White / 0") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_C) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("C / 3 / Knight") PORT_START("IN.3") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_O) PORT_NAME("POS") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_NAME("ENT") PORT_START("IN.4") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_H) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_NAME("H / 8") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_D) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("D / 4 / Bishop") PORT_START("IN.5") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_L) PORT_NAME("LEV") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_A) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("A / 1") PORT_START("IN.6") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_G) PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_NAME("G / 7 / King") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_F) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("F / 6 / Queen") PORT_START("IN.7") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_M) PORT_NAME("MEM") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_B) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("B / 2 / Pawn") INPUT_PORTS_END static INPUT_PORTS_START( mirage ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("LIST") PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_A) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("A / 1") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("E / 5 / Rook") PORT_START("IN.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_NAME("ENT") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_9) PORT_CODE(KEYCODE_9_PAD) PORT_NAME("Black / 9") PORT_START("IN.3") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_B) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("B / 2 / Pawn") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_F) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("F / 6 / Queen") PORT_START("IN.4") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_SPACE) PORT_CODE(KEYCODE_PLUS_PAD) PORT_NAME("STA") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) PORT_NAME("White / 0") PORT_START("IN.5") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_C) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("C / 3 / Knight") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_G) PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_NAME("G / 7 / King") PORT_START("IN.6") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_L) PORT_NAME("LEV") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_V) PORT_NAME("REV") PORT_START("IN.7") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_D) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("D / 4 / Bishop") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_H) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_NAME("H / 8") PORT_START("FAKE") // module came with buttons sensorboard by default PORT_CONFNAME( 0x01, 0x00, "Board Sensors" ) PORT_CHANGED_MEMBER(DEVICE_SELF, mm1_state, mirage_switch_sensor_type, 0) PORT_CONFSETTING( 0x00, "Buttons (Mirage)" ) PORT_CONFSETTING( 0x01, "Magnets (Modular)" ) INPUT_PORTS_END INPUT_CHANGED_MEMBER(mm1_state::mirage_switch_sensor_type) { m_board->set_type(newval ? sensorboard_device::MAGNETS : sensorboard_device::BUTTONS); } /****************************************************************************** Machine Drivers ******************************************************************************/ void mm1_state::mirage(machine_config &config) { /* basic machine hardware */ CDP1806(config, m_maincpu, 8_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &mm1_state::mirage_map); m_maincpu->set_addrmap(AS_IO, &mm1_state::mm1_io); m_maincpu->clear_cb().set(FUNC(mm1_state::clear_r)); m_maincpu->q_cb().set(FUNC(mm1_state::q_w)).invert(); m_maincpu->ef3_cb().set(FUNC(mm1_state::keypad_r<0>)); m_maincpu->ef4_cb().set(FUNC(mm1_state::keypad_r<1>)); // wrong! uses internal timer interrupt const attotime irq_period = attotime::from_ticks(8 * 32 * 0x71, 8_MHz_XTAL); // LDC = 0x71 m_maincpu->set_periodic_int(FUNC(mm1_state::interrupt), irq_period); SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS); m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess)); m_board->set_delay(attotime::from_msec(200)); /* video hardware */ PWM_DISPLAY(config, m_display).set_size(4+8, 8); m_display->set_segmask(0xf, 0x7f); config.set_default_layout(layout_mephisto_mirage); /* sound hardware */ SPEAKER(config, "speaker").front_center(); DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25); VOLTAGE_REGULATOR(config, "vref").add_route(0, "dac", 1.0, DAC_VREF_POS_INPUT); } void mm1_state::mm1(machine_config &config) { mirage(config); /* basic machine hardware */ m_maincpu->set_addrmap(AS_PROGRAM, &mm1_state::mm1_map); m_maincpu->q_cb().set(FUNC(mm1_state::q_w)); // wrong! uses internal timer interrupt const attotime irq_period = attotime::from_ticks(8 * 32 * 0xfa, 8_MHz_XTAL); // LDC = 0xFA m_maincpu->set_periodic_int(FUNC(mm1_state::interrupt), irq_period); m_board->set_type(sensorboard_device::MAGNETS); config.set_default_layout(layout_mephisto_mm1); GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "mephisto_cart"); SOFTWARE_LIST(config, "cart_list").set_original("mephisto_mm1"); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( mm1 ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD("114", 0x0000, 0x4000, CRC(208b4c43) SHA1(48f891d614fa643f47d099f94aff15a44c2efc07) ) // D27128 ROM_LOAD("214", 0x4000, 0x4000, CRC(93734e49) SHA1(9ad6c191074c4122300f059e2ef9cfeff7b81463) ) // " ROM_END ROM_START( mm1b ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD("mm1b.bin", 0x0000, 0x8000, CRC(90bf840e) SHA1(cdec6b02c1352b2a00d66964989a17c2b81ec79e) ) // HN613256P ROM_END ROM_START( mmirage ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD("g79", 0x0000, 0x8000, CRC(8cbaff40) SHA1(693086ae179f1ada4ac403b3a6bc7ea718b4e71e) ) // HN613256P, 2nd half empty ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS CONS( 1983, mm1, 0, 0, mm1, mm1, mm1_state, empty_init, "Hegener + Glaser", "Mephisto MM I (ver. A)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1983, mm1b, mm1, 0, mm1, mm1, mm1_state, empty_init, "Hegener + Glaser", "Mephisto MM I (ver. B)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1984, mmirage, 0, 0, mirage, mirage, mm1_state, empty_init, "Hegener + Glaser", "Mephisto Mirage", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )