// license:BSD-3-Clause // copyright-holders:Sandro Ronco, hap /****************************************************************************** VEB Mikroelektronik "Karl Marx" Erfurt Chess-Master (aka Schachcomputer CM) - Chess-Master (G-5003-500) (10*U505 roms) - Chess-Master (G-5003-501) (2 roms set) Unlike SC2, the chess engine was not copied from an existing one. It is an original creation by RĂ¼diger Worbs and Dieter Schultze. It competed in Budapest WMCCC 1983 and ended at a low 16th place. Hardware notes: - UB880 Z80 @ ~2.5MHz - 2*Z80 PIO - 10KB ROM (10*U505D), 2KB RAM (4*U214D) - chessboard with 64 hall sensors, 64+15 leds, piezo A newer version had a 4MHz UA880 and 2 ROM chips (8KB + 2KB). BTANB: - corner leds flicker sometimes TODO: - chessmsta isn't working, needs a redump of u2616. Program differences are minor so it seems to boot fine if you take 064/065 from chessmst, but will probably have some problems. ******************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/z80pio.h" #include "machine/sensorboard.h" #include "sound/dac.h" #include "video/pwm.h" #include "speaker.h" // internal artwork #include "chessmst.lh" namespace { class chessmst_state : public driver_device { public: chessmst_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_pio(*this, "z80pio%u", 0), m_board(*this, "board"), m_led_pwm(*this, "led_pwm"), m_dac(*this, "dac"), m_inputs(*this, "IN.%u", 0) { } DECLARE_INPUT_CHANGED_MEMBER(halt_button); DECLARE_INPUT_CHANGED_MEMBER(reset_button); void chessmst(machine_config &config); void chessmsta(machine_config &config); protected: virtual void machine_start() override; private: required_device m_maincpu; required_device_array m_pio; required_device m_board; required_device m_led_pwm; required_device m_dac; required_ioport_array<2> m_inputs; void chessmst_io(address_map &map); void chessmst_mem(address_map &map); void pio1_port_a_w(u8 data); void pio1_port_b_w(u8 data); u8 pio2_port_a_r(); void pio2_port_b_w(u8 data); void update_leds(); u16 m_matrix = 0; u8 m_led_data[2] = { 0, 0 }; }; void chessmst_state::machine_start() { // register for savestates save_item(NAME(m_matrix)); save_item(NAME(m_led_data)); } /****************************************************************************** I/O ******************************************************************************/ void chessmst_state::update_leds() { m_led_pwm->matrix(m_matrix, m_led_data[0] | m_led_data[1]); } void chessmst_state::pio1_port_a_w(u8 data) { // d0-d7: led data m_led_data[0] = ~data; update_leds(); } void chessmst_state::pio1_port_b_w(u8 data) { // d0,d1: input mux/led select high m_matrix = (m_matrix & 0xff) | ((data & 0x03) << 8); // d2,d3: led data 2nd/3rd rows (duplicate) m_led_data[1] = ~data >> 1 & 6; update_leds(); // d6: speaker out m_dac->write(BIT(data, 6)); } u8 chessmst_state::pio2_port_a_r() { u8 data = 0xff; // read chessboard sensors for (int i = 0; i < 8; i++) if (BIT(m_matrix, i)) data &= ~m_board->read_file(i); // read other buttons if (m_matrix & 0x100) data &= m_inputs[0]->read(); return data; } void chessmst_state::pio2_port_b_w(u8 data) { // d0-d7: input mux/led select m_matrix = (data & 0xff) | (m_matrix & ~0xff); update_leds(); } /****************************************************************************** Address Maps ******************************************************************************/ void chessmst_state::chessmst_mem(address_map &map) { map.unmap_value_high(); map.global_mask(0x7fff); // A15 not connected map(0x0000, 0x27ff).rom(); map(0x3400, 0x3bff).ram(); } void chessmst_state::chessmst_io(address_map &map) { map.unmap_value_high(); map.global_mask(0x0f); //map(0x00, 0x03) read/write to both PIOs, but not used by software map(0x04, 0x07).rw(m_pio[0], FUNC(z80pio_device::read), FUNC(z80pio_device::write)); map(0x08, 0x0b).rw(m_pio[1], FUNC(z80pio_device::read), FUNC(z80pio_device::write)); } /****************************************************************************** Input Ports ******************************************************************************/ INPUT_CHANGED_MEMBER(chessmst_state::halt_button) { // halt button goes to PIO(0) ASTB pin m_pio[0]->strobe_a(newval); reset_button(field, param, oldval, newval); } INPUT_CHANGED_MEMBER(chessmst_state::reset_button) { // pressing both halt+reset buttons causes a reset const bool reset = (m_inputs[1]->read() & 0x03) == 0x03; m_maincpu->set_input_line(INPUT_LINE_RESET, reset ? ASSERT_LINE : CLEAR_LINE); } static INPUT_PORTS_START( chessmst ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Hint / 7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_H) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Random / 6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_R) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Referee / 5 / King") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_F) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Self Play / 4 / Queen") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_S) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Board / 3 / Rook") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_B) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Color / 2 / Bishop") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_C) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Level / 1 / Knight") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_L) PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("New Game / 0 / Pawn") PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) PORT_CODE(KEYCODE_N) PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Halt") PORT_CODE(KEYCODE_F2) PORT_CHANGED_MEMBER(DEVICE_SELF, chessmst_state, halt_button, 0) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Reset") PORT_CODE(KEYCODE_F1) PORT_CHANGED_MEMBER(DEVICE_SELF, chessmst_state, reset_button, 0) INPUT_PORTS_END /****************************************************************************** Machine Configs ******************************************************************************/ static const z80_daisy_config chessmst_daisy_chain[] = { { "z80pio0" }, { nullptr } }; void chessmst_state::chessmst(machine_config &config) { // basic machine hardware Z80(config, m_maincpu, 9.8304_MHz_XTAL / 4); m_maincpu->set_addrmap(AS_PROGRAM, &chessmst_state::chessmst_mem); m_maincpu->set_addrmap(AS_IO, &chessmst_state::chessmst_io); m_maincpu->set_daisy_config(chessmst_daisy_chain); Z80PIO(config, m_pio[0], 9.8304_MHz_XTAL / 4); m_pio[0]->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); m_pio[0]->out_pa_callback().set(FUNC(chessmst_state::pio1_port_a_w)); m_pio[0]->out_pb_callback().set(FUNC(chessmst_state::pio1_port_b_w)); Z80PIO(config, m_pio[1], 9.8304_MHz_XTAL / 4); m_pio[1]->in_pa_callback().set(FUNC(chessmst_state::pio2_port_a_r)); m_pio[1]->out_pb_callback().set(FUNC(chessmst_state::pio2_port_b_w)); SENSORBOARD(config, m_board); m_board->set_type(sensorboard_device::MAGNETS); m_board->init_cb().set(m_board, FUNC(sensorboard_device::preset_chess)); m_board->set_delay(attotime::from_msec(150)); // video hardware PWM_DISPLAY(config, m_led_pwm).set_size(10, 8); config.set_default_layout(layout_chessmst); // sound hardware SPEAKER(config, "speaker").front_center(); DAC_1BIT(config, m_dac).add_route(ALL_OUTPUTS, "speaker", 0.25); } void chessmst_state::chessmsta(machine_config &config) { chessmst(config); // faster UA880 CPU const XTAL clk = 8_MHz_XTAL / 2; m_maincpu->set_clock(clk); m_pio[0]->set_clock(clk); m_pio[1]->set_clock(clk); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( chessmst ) ROM_REGION( 0x2800, "maincpu", 0 ) ROM_LOAD("bm056.d208", 0x0000, 0x0400, CRC(2b90e5d3) SHA1(c47445964b2e6cb11bd1f27e395cf980c97af196) ) // U505 ROM_LOAD("bm057.d209", 0x0400, 0x0400, CRC(e666fc56) SHA1(3fa75b82cead81973bea94191a5c35f0acaaa0e6) ) // " ROM_LOAD("bm058.d210", 0x0800, 0x0400, CRC(6a17fbec) SHA1(019051e93a5114477c50eaa87e1ff01b02eb404d) ) // " ROM_LOAD("bm059.d211", 0x0c00, 0x0400, CRC(e96e3d07) SHA1(20fab75f206f842231f0414ebc473ce2a7371e7f) ) // " ROM_LOAD("bm060.d212", 0x1000, 0x0400, CRC(0e31f000) SHA1(daac924b79957a71a4b276bf2cef44badcbe37d3) ) // " ROM_LOAD("bm061.d213", 0x1400, 0x0400, CRC(69ad896d) SHA1(25d999b59d4cc74bd339032c26889af00e64df60) ) // " ROM_LOAD("bm062.d214", 0x1800, 0x0400, CRC(c42925fe) SHA1(c42d8d7c30a9b6d91ac994cec0cc2723f41324e9) ) // " ROM_LOAD("bm063.d215", 0x1c00, 0x0400, CRC(86be4cdb) SHA1(741f984c15c6841e227a8722ba30cf9e6b86d878) ) // " ROM_LOAD("bm064.d216", 0x2000, 0x0400, CRC(e82f5480) SHA1(38a939158052f5e6484ee3725b86e522541fe4aa) ) // " ROM_LOAD("bm065.d217", 0x2400, 0x0400, CRC(4ec0e92c) SHA1(0b748231a50777391b04c1778750fbb46c21bee8) ) // " ROM_END ROM_START( chessmsta ) ROM_REGION( 0x2800, "maincpu", 0 ) ROM_LOAD("bm001.d204", 0x0000, 0x2000, CRC(6be28876) SHA1(fd7d77b471e7792aef3b2b3f7ff1de4cdafc94c9) ) // U2364D45 ROM_LOAD("bm108.d205", 0x2000, 0x0800, CRC(6e69ace3) SHA1(e099b6b6cc505092f64b8d51ab9c70aa64f58f70) BAD_DUMP ) // U2616D45 - problem with d3 ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS CONS( 1984, chessmst, 0, 0, chessmst, chessmst, chessmst_state, empty_init, "VEB Mikroelektronik \"Karl Marx\" Erfurt", "Chess-Master (set 1)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1984, chessmsta, chessmst, 0, chessmsta, chessmst, chessmst_state, empty_init, "VEB Mikroelektronik \"Karl Marx\" Erfurt", "Chess-Master (set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_NOT_WORKING | MACHINE_CLICKABLE_ARTWORK )