// license:BSD-3-Clause // copyright-holders:hap // thanks-to:yoyo_chessboard /****************************************************************************** Fidelity Elegance Chess Challenger (AS12) Hardware notes: - R65C02P4 CPU @ 4MHz - 3*8KB ROM(TMM2764), 2*2KB RAM(HM6116) - PCB label 510-1084B01 This is on the SC12B board, with enough modifications to support more leds and magnetic chess board sensors. See fidel_sc12.cpp for a more technical description. ******************************************************************************/ #include "emu.h" #include "machine/fidel_clockdiv.h" #include "cpu/m6502/r65c02.h" #include "machine/sensorboard.h" #include "machine/timer.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 "softlist.h" #include "speaker.h" // internal artwork #include "fidel_as12.lh" // clickable namespace { // note: sub-class of fidel_clockdiv_state (see mame/machine/fidel_clockdiv.*) class as12_state : public fidel_clockdiv_state { public: as12_state(const machine_config &mconfig, device_type type, const char *tag) : fidel_clockdiv_state(mconfig, type, tag), m_irq_on(*this, "irq_on"), m_board(*this, "board"), m_display(*this, "display"), m_dac(*this, "dac"), m_inputs(*this, "IN.0") { } // machine configs void as12(machine_config &config); protected: virtual void machine_start() override; private: // devices/pointers required_device m_irq_on; required_device m_board; required_device m_display; required_device m_dac; required_ioport m_inputs; // address maps void main_map(address_map &map); // 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); } // I/O handlers void update_display(); void control_w(u8 data); void led_w(offs_t offset, u8 data); u8 input_r(offs_t offset); u16 m_inp_mux; u8 m_led_data; }; void as12_state::machine_start() { fidel_clockdiv_state::machine_start(); // zerofill m_inp_mux = 0; m_led_data = 0; // register for savestates save_item(NAME(m_inp_mux)); save_item(NAME(m_led_data)); } /****************************************************************************** I/O ******************************************************************************/ void as12_state::update_display() { // 8*8(+1) chessboard leds m_display->matrix(m_inp_mux, m_led_data); } void as12_state::control_w(u8 data) { // d0-d3: 74245 P0-P3 // 74245 Q0-Q8: input mux, led select u16 sel = 1 << (data & 0xf) & 0x3ff; m_inp_mux = bitswap<9>(sel,5,8,7,6,4,3,1,0,2); update_display(); // 74245 Q9: speaker out m_dac->write(BIT(sel, 9)); // d4,d5: printer? // d6,d7: N/C? } void as12_state::led_w(offs_t offset, u8 data) { // a0-a2,d0: led data via NE591N m_led_data = (m_led_data & ~(1 << offset)) | ((data & 1) << offset); update_display(); } u8 as12_state::input_r(offs_t offset) { u8 data = 0; // a0-a2,d7: multiplexed inputs (active low) // read chessboard sensors for (int i = 0; i < 8; i++) if (BIT(m_inp_mux, i)) data |= m_board->read_file(i); // read sidepanel buttons if (m_inp_mux & 0x100) data |= m_inputs->read(); data = bitswap<8>(data,4,3,2,1,0,5,6,7); return (data >> offset & 1) ? 0 : 0x80; } /****************************************************************************** Address Maps ******************************************************************************/ void as12_state::main_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x0fff).ram(); map(0x1800, 0x1807).w(FUNC(as12_state::led_w)).nopr(); map(0x2000, 0x5fff).r("cartslot", FUNC(generic_slot_device::read_rom)); map(0x6000, 0x6000).mirror(0x1fff).w(FUNC(as12_state::control_w)); map(0x8000, 0x9fff).rom(); map(0xa000, 0xa007).mirror(0x1ff8).r(FUNC(as12_state::input_r)); map(0xc000, 0xffff).rom(); } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( as12 ) PORT_INCLUDE( fidel_clockdiv_4 ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("RV / Pawn") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("DM / Knight") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("TB / Bishop") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("LV / Rook") PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen") PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / King") PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL") PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("RE") INPUT_PORTS_END /****************************************************************************** Machine Configs ******************************************************************************/ void as12_state::as12(machine_config &config) { /* basic machine hardware */ R65C02(config, m_maincpu, 4_MHz_XTAL); // R65C02P4 m_maincpu->set_addrmap(AS_PROGRAM, &as12_state::div_trampoline); ADDRESS_MAP_BANK(config, m_mainmap).set_map(&as12_state::main_map).set_options(ENDIANNESS_LITTLE, 8, 16); const attotime irq_period = attotime::from_hz(600); // from 556 timer (22nF, 110K, 1K), ideal frequency is 600Hz TIMER(config, m_irq_on).configure_periodic(FUNC(as12_state::irq_on), irq_period); m_irq_on->set_start_delay(irq_period - attotime::from_nsec(15250)); // active for 15.25us TIMER(config, "irq_off").configure_periodic(FUNC(as12_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(9, 8); config.set_default_layout(layout_fidel_as12); /* 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); /* cartridge */ GENERIC_CARTSLOT(config, "cartslot", generic_plain_slot, "fidel_scc"); SOFTWARE_LIST(config, "cart_list").set_original("fidel_scc"); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( feleg ) // model AS12(or 6085) ROM_REGION( 0x10000, "mainmap", 0 ) ROM_LOAD("feleg.1", 0x8000, 0x2000, CRC(e9df31e8) SHA1(31c52bb8f75580c82093eb950959c1bc294189a8) ) // TMM2764, no label ROM_LOAD("feleg.2", 0xc000, 0x2000, CRC(bed9c84b) SHA1(c12f39765b054d2ad81f747e698715ad4246806d) ) // " ROM_LOAD("feleg.3", 0xe000, 0x2000, CRC(b1fb49aa) SHA1(d8c9687dd564f0fa603e6d684effb1d113ac64b4) ) // " ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS CONS( 1985, feleg, 0, 0, as12, as12, as12_state, empty_init, "Fidelity Electronics", "Elegance Chess Challenger", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_TIMING )