// license:BSD-3-Clause // copyright-holders:hap // thanks-to:Berger /****************************************************************************** CXG Chess 2001, also sold by Hanimex as HCG 1900 and by CGL as Computachess Champion. CXG Chess 3000 is assumed to be on similar hardware as this. The chess engine is by Richard Lang, based on Cyrus. CXG Systems S.A. and Newcrest Technology Ltd. are related companies, with Eric White at the steering wheel. Newcrest(1984-1991) is probably a rename of "White & Allcock"(1981-1984). Hardware notes: - Zilog Z8400APS @ 4 MHz (8MHz XTAL) - 2KB RAM HM6116, 16KB ROM D27128D - TTL, piezo, 8*8+9 LEDs, magnetic sensors ******************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/sensorboard.h" #include "machine/timer.h" #include "sound/dac.h" #include "sound/volt_reg.h" #include "video/pwm.h" #include "speaker.h" // internal artwork #include "cxg_ch2001.lh" // clickable namespace { class ch2001_state : public driver_device { public: ch2001_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_irq_on(*this, "irq_on"), m_display(*this, "display"), m_board(*this, "board"), m_dac(*this, "dac"), m_inputs(*this, "IN.%u", 0) { } // machine configs void ch2001(machine_config &config); protected: virtual void machine_start() override; private: // devices/pointers required_device m_maincpu; required_device m_irq_on; required_device m_display; required_device m_board; required_device m_dac; required_ioport_array<2> m_inputs; // periodic interrupts template TIMER_DEVICE_CALLBACK_MEMBER(irq_on) { m_maincpu->set_input_line(Line, ASSERT_LINE); } template TIMER_DEVICE_CALLBACK_MEMBER(irq_off) { m_maincpu->set_input_line(Line, CLEAR_LINE); } // address maps void main_map(address_map &map); // I/O handlers DECLARE_WRITE8_MEMBER(speaker_w); DECLARE_WRITE8_MEMBER(leds_w); DECLARE_READ8_MEMBER(input_r); u16 m_inp_mux; int m_dac_data; }; void ch2001_state::machine_start() { // zerofill m_inp_mux = 0; m_dac_data = 0; // register for savestates save_item(NAME(m_inp_mux)); save_item(NAME(m_dac_data)); } /****************************************************************************** I/O ******************************************************************************/ // TTL WRITE8_MEMBER(ch2001_state::speaker_w) { // 74ls109 toggle to speaker m_dac_data ^= 1; m_dac->write(m_dac_data); } WRITE8_MEMBER(ch2001_state::leds_w) { // d0-d7: 74ls273 (WR to CLK) // 74ls273 Q1-Q4: 74ls145 A-D // 74ls145 0-9: input mux/led select m_inp_mux = data & 0xf; u16 sel = 1 << m_inp_mux & 0x3ff; // 74ls273 Q5-Q8: MC14028 A-D // MC14028 Q0-Q7: led data, Q8,Q9: N/C u8 led_data = 1 << (data >> 4 & 0xf) & 0xff; m_display->matrix(sel, led_data); } READ8_MEMBER(ch2001_state::input_r) { u8 data = 0; // d0-d7: multiplexed inputs // read chessboard sensors if (m_inp_mux < 8) data = m_board->read_file(m_inp_mux, true); // read other buttons else if (m_inp_mux < 10) data = m_inputs[m_inp_mux - 8]->read(); return ~data; } /****************************************************************************** Address Maps ******************************************************************************/ void ch2001_state::main_map(address_map &map) { map(0x0000, 0x3fff).rom(); map(0x4000, 0x47ff).mirror(0x3800).ram(); map(0x8000, 0x8000).mirror(0x3fff).rw(FUNC(ch2001_state::input_r), FUNC(ch2001_state::leds_w)); map(0xc000, 0xc000).mirror(0x3fff).w(FUNC(ch2001_state::speaker_w)); } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( ch2001 ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_NAME("Black") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_NAME("King") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_NAME("Queen") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_NAME("Rook") PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_W) PORT_NAME("Bishop") PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_NAME("Knight") PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("Pawn") PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_NAME("White") PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("Set up") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Q) PORT_NAME("New Game") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_U) PORT_NAME("Take Back") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Y) PORT_NAME("Forward") PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_NAME("Hint") PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("Move") PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_NAME("Level") PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_7) PORT_NAME("Sound") INPUT_PORTS_END /****************************************************************************** Machine Configs ******************************************************************************/ void ch2001_state::ch2001(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, 8_MHz_XTAL/2); m_maincpu->set_addrmap(AS_PROGRAM, &ch2001_state::main_map); const attotime irq_period = attotime::from_hz(533); // theoretical frequency from 555 timer (20nF, 100K+33K, 1K2), measurement was 568Hz TIMER(config, m_irq_on).configure_periodic(FUNC(ch2001_state::irq_on), irq_period); m_irq_on->set_start_delay(irq_period - attotime::from_nsec(16600)); // active for 16.6us TIMER(config, "irq_off").configure_periodic(FUNC(ch2001_state::irq_off), irq_period); SENSORBOARD(config, 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_display).set_size(10, 8); config.set_default_layout(layout_cxg_ch2001); /* 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); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( ch2001 ) ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD("ch2001.bin", 0x0000, 0x4000, CRC(b3485c73) SHA1(f405c6f67fe70edf45dcc383a4049ee6bad387a9) ) // D27128D, no label ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS */ CONS( 1984, ch2001, 0, 0, ch2001, ch2001, ch2001_state, empty_init, "CXG Systems / Newcrest Technology", "Chess 2001", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )