// license:BSD-3-Clause // copyright-holders:hap // thanks-to:Berger /****************************************************************************** Fidelity Chess Challenger 7 (CC7, BCC) ------------------------ It was Fidelity's most sold chess computer. model CC7 is an older version. CC7 known serial numbers range from 1979 to 1980. BCC from 1980 to 1983. Zilog Z80A, 3.579MHz from XTAL Z80 IRQ/NMI unused, no timer IC. This is a cost-reduced design from CC10, no special I/O chips. Backgammon Challenger (BKC) is the same PCB, with the speaker connection going to the display panel instead. CC7 (BCC) was also bootlegged around 1981 by Splice Industria Brasileira, as "Byte XD-300". Mostek MK3880N-4 @ 4MHz, ROM contents is same as BCC REVB. RE information from netlist by Berger (a BCC model) Memory map: ----------- 0000-0FFF: 4K 2332 ROM CN19103N BCC-REVB. 2000-2FFF: ROM/RAM bus conflict! 3000-3FFF: 256 bytes RAM (2111 SRAM x2) 4000-FFFF: Z80 A14/A15 not connected Port map (Write): --------- D0-D3: digit select and keypad mux D4: CHECK led D5: LOSE led A0-A2: NE591 A0-A2 D7: NE591 D (_C not used) NE591 Q0-Q6: digit segments A-G NE591 Q7: buzzer Port map (Read): --------- D0-D3: keypad row ******************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "sound/dac.h" #include "sound/volt_reg.h" #include "video/pwm.h" #include "speaker.h" // internal artwork #include "fidel_bcc.lh" // clickable #include "fidel_bkc.lh" // clickable namespace { class bcc_state : public driver_device { public: bcc_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_dac(*this, "dac"), m_inputs(*this, "IN.%u", 0) { } // machine drivers void bcc(machine_config &config); void bkc(machine_config &config); protected: virtual void machine_start() override; private: // devices/pointers required_device m_maincpu; required_device m_display; optional_device m_dac; required_ioport_array<4> m_inputs; // address maps void main_map(address_map &map); void main_io(address_map &map); // I/O handlers DECLARE_READ8_MEMBER(input_r); DECLARE_WRITE8_MEMBER(control_w); u8 m_inp_mux; u8 m_7seg_data; }; void bcc_state::machine_start() { // zerofill m_inp_mux = 0; m_7seg_data = 0; // register for savestates save_item(NAME(m_inp_mux)); save_item(NAME(m_7seg_data)); } /****************************************************************************** I/O ******************************************************************************/ // TTL WRITE8_MEMBER(bcc_state::control_w) { // a0-a2,d7: digit segment data via NE591 u8 mask = 1 << (offset & 7); m_7seg_data = (m_7seg_data & ~mask) | ((data & 0x80) ? mask : 0); // BCC: NE591 Q7 is speaker out if (m_dac != nullptr) m_dac->write(BIT(m_7seg_data, 7)); // d0-d3: led select, input mux // d4,d5: upper leds(direct) m_display->matrix(data & 0x3f, m_7seg_data); m_inp_mux = data & 0xf; } READ8_MEMBER(bcc_state::input_r) { u8 data = 0; // d0-d3: multiplexed inputs for (int i = 0; i < 4; i++) if (BIT(m_inp_mux, i)) data |= m_inputs[i]->read(); return data; } /****************************************************************************** Address Maps ******************************************************************************/ void bcc_state::main_map(address_map &map) { map.unmap_value_high(); map.global_mask(0x3fff); map(0x0000, 0x0fff).rom(); map(0x3000, 0x30ff).mirror(0x0f00).ram(); } void bcc_state::main_io(address_map &map) { map.global_mask(0x07); map(0x00, 0x07).rw(FUNC(bcc_state::input_r), FUNC(bcc_state::control_w)); } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( bcc ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("EN") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PV") PORT_CODE(KEYCODE_V) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("D4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CODE(KEYCODE_D) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("H8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CODE(KEYCODE_H) PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CL") PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PB") PORT_CODE(KEYCODE_O) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("C3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CODE(KEYCODE_C) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("G7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CODE(KEYCODE_G) PORT_START("IN.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CB") PORT_CODE(KEYCODE_SPACE) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("DM") PORT_CODE(KEYCODE_M) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("B2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CODE(KEYCODE_B) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("F6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CODE(KEYCODE_F) PORT_START("IN.3") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("RE") PORT_CODE(KEYCODE_R) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("LV") PORT_CODE(KEYCODE_L) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("A1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CODE(KEYCODE_A) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("E5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CODE(KEYCODE_E) INPUT_PORTS_END static INPUT_PORTS_START( bkc ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("EN") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_ENTER_PAD) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("9") PORT_CODE(KEYCODE_9) PORT_CODE(KEYCODE_9_PAD) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("6") PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("3") PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CL") PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_BACKSPACE) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("8") PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("5") PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("2") PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_START("IN.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("GM") PORT_CODE(KEYCODE_SPACE) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("7") PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("4") PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("1") PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_START("IN.3") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("RE") PORT_CODE(KEYCODE_R) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PB") PORT_CODE(KEYCODE_O) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("PV") PORT_CODE(KEYCODE_V) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) INPUT_PORTS_END /****************************************************************************** Machine Drivers ******************************************************************************/ void bcc_state::bkc(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, 3.579545_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &bcc_state::main_map); m_maincpu->set_addrmap(AS_IO, &bcc_state::main_io); /* video hardware */ PWM_DISPLAY(config, m_display).set_size(6, 8); m_display->set_segmask(0xf, 0x7f); config.set_default_layout(layout_fidel_bkc); } void bcc_state::bcc(machine_config &config) { bkc(config); config.set_default_layout(layout_fidel_bcc); /* 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( cc7 ) // model BCC ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "cn19103n_bcc-revb", 0x0000, 0x1000, CRC(a397d471) SHA1(9b12bc442fccee40f4d8500c792bc9d886c5e1a5) ) // 2332 ROM_END ROM_START( cc7o ) // model CC7, PCB label 510-380 ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "101-32016", 0x0000, 0x1000, CRC(b9076c52) SHA1(09b17ac6cd6a1c5c62aea3649f3367bcf4405598) ) // 2332 ROM_END ROM_START( backgamc ) // model BKC, PCB label P-380A-5 ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "cn19255n_101-32012", 0x0000, 0x1000, CRC(0a8a19b7) SHA1(d6f0dd44b33c9b79570cf0ceac02a036ec91ba57) ) // 2332 ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS CONS( 1979, cc7, 0, 0, bcc, bcc, bcc_state, empty_init, "Fidelity Electronics", "Chess Challenger 7 (model BCC, rev. B)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1979, cc7o, cc7, 0, bcc, bcc, bcc_state, empty_init, "Fidelity Electronics", "Chess Challenger 7 (model CC7)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) // 2nd revision of model CC7? CONS( 1979, backgamc, 0, 0, bkc, bkc, bcc_state, empty_init, "Fidelity Electronics", "Backgammon Challenger", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_NO_SOUND_HW )