// license:BSD-3-Clause // copyright-holders:hap // thanks-to:Berger /****************************************************************************** Novag Presto / Novag Octo Hardware notes (Presto): - NEC D80C49C MCU(serial 186), OSC from LC circuit measured ~6MHz - buzzer, 16+4 LEDs, 8*8 chessboard buttons Octo has a NEC D80C49HC MCU(serial 111), OSC from LC circuit measured ~12MHz The buzzer has a little electronic circuit going on, not sure whatfor. Otherwise, it's identical to Presto. The MCU internal ROM is same too. TODO: - controls are too sensitive, is there a bug in the CPU core timer emulation? 6MHz: valid (single) button press registered between 307ms and 436ms, 12MHz: between 154ms and 218ms, 15MHz: between 123ms and 174ms. ******************************************************************************/ #include "emu.h" #include "cpu/mcs48/mcs48.h" #include "machine/sensorboard.h" #include "sound/dac.h" #include "sound/volt_reg.h" #include "video/pwm.h" #include "speaker.h" // internal artwork #include "novag_presto.lh" // clickable namespace { // Presto / shared class presto_state : public driver_device { public: presto_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_display(*this, "display"), m_board(*this, "board"), m_dac(*this, "dac"), m_inputs(*this, "IN.0") { } // machine drivers void presto(machine_config &config); void octo(machine_config &config); protected: virtual void machine_start() override; // devices/pointers required_device m_maincpu; required_device m_display; required_device m_board; optional_device m_dac; required_ioport m_inputs; // I/O handlers void update_display(); DECLARE_WRITE8_MEMBER(mux_w); DECLARE_WRITE8_MEMBER(control_w); DECLARE_READ8_MEMBER(input_r); bool m_kp_select; u8 m_inp_mux; u8 m_led_select; }; void presto_state::machine_start() { // zerofill m_kp_select = false; m_inp_mux = 0; m_led_select = 0; // register for savestates save_item(NAME(m_kp_select)); save_item(NAME(m_inp_mux)); save_item(NAME(m_led_select)); } // Octo class octo_state : public presto_state { public: octo_state(const machine_config &mconfig, device_type type, const char *tag) : presto_state(mconfig, type, tag) { } DECLARE_INPUT_CHANGED_MEMBER(octo_cpu_freq) { octo_set_cpu_freq(); } protected: virtual void machine_reset() override; void octo_set_cpu_freq(); }; void octo_state::machine_reset() { presto_state::machine_reset(); octo_set_cpu_freq(); } void octo_state::octo_set_cpu_freq() { // Octo was released with either 12MHz or 15MHz CPU m_maincpu->set_unscaled_clock((ioport("FAKE")->read() & 1) ? (15000000) : (12000000)); } /****************************************************************************** I/O ******************************************************************************/ // MCU ports/generic void presto_state::update_display() { m_display->matrix(m_led_select, m_inp_mux); } WRITE8_MEMBER(presto_state::mux_w) { // D0-D7: input mux, led data m_inp_mux = ~data; update_display(); } WRITE8_MEMBER(presto_state::control_w) { // P21: keypad select m_kp_select = bool(~data & 2); // P22,P23: speaker lead 1,2 m_dac->write(BIT(data, 2) & BIT(~data, 3)); // P24-P26: led select m_led_select = ~data >> 4 & 7; update_display(); } READ8_MEMBER(presto_state::input_r) { u8 data = 0; // P10-P17: multiplexed inputs // read chessboard buttons for (int i = 0; i < 8; i++) if (BIT(m_inp_mux, i)) data |= m_board->read_rank(i); // read sidepanel keypad if (m_kp_select) data |= m_inputs->read(); return ~data; } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( presto ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("Black/White") // Octo calls it "Change Color" PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("Verify / Pawn") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("Set Up / Rook") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("Knight") PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("Set Level / Bishop") PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("Queen") PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_NAME("Take Back / King") PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_NAME("Go") INPUT_PORTS_END static INPUT_PORTS_START( octo ) PORT_INCLUDE( presto ) PORT_START("FAKE") PORT_CONFNAME( 0x01, 0x00, "CPU Frequency" ) PORT_CHANGED_MEMBER(DEVICE_SELF, octo_state, octo_cpu_freq, 0) // factory set PORT_CONFSETTING( 0x00, "12MHz" ) PORT_CONFSETTING( 0x01, "15MHz" ) INPUT_PORTS_END /****************************************************************************** Machine Drivers ******************************************************************************/ void presto_state::presto(machine_config &config) { /* basic machine hardware */ I8049(config, m_maincpu, 6000000); // LC circuit, measured 6MHz m_maincpu->p1_in_cb().set(FUNC(presto_state::input_r)); m_maincpu->p2_out_cb().set(FUNC(presto_state::control_w)); m_maincpu->bus_out_cb().set(FUNC(presto_state::mux_w)); 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(320)); /* video hardware */ PWM_DISPLAY(config, m_display).set_size(3, 8); config.set_default_layout(layout_novag_presto); /* 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 presto_state::octo(machine_config &config) { presto(config); /* basic machine hardware */ m_maincpu->set_clock(12000000); // LC circuit, measured, see octo_set_cpu_freq m_board->set_delay(attotime::from_msec(160)); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( npresto ) ROM_REGION( 0x0800, "maincpu", 0 ) ROM_LOAD("d80c49c_186", 0x0000, 0x0800, CRC(29a0eb4c) SHA1(e058d6018e53ddcaa3b5ec25b33b8bff091b04db) ) ROM_END ROM_START( nocto ) ROM_REGION( 0x0800, "maincpu", 0 ) ROM_LOAD("d80c49hc_111", 0x0000, 0x0800, CRC(29a0eb4c) SHA1(e058d6018e53ddcaa3b5ec25b33b8bff091b04db) ) // same program as npresto ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS CONS( 1984, npresto, 0, 0, presto, presto, presto_state, empty_init, "Novag", "Presto (Novag)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1987, nocto, npresto, 0, octo, octo, octo_state, empty_init, "Novag", "Octo (Novag)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )