// license:BSD-3-Clause // copyright-holders:Jonathan Gevaryahu, Sandro Ronco, hap // thanks-to:Berger, Sean Riddle /****************************************************************************** Fidelity CC10 / Fidelity ACR TODO: - What is cc10 8255 PB.7 for? When set, maximum levels is 3, like in CC3. But there is no CC3 with 16 buttons, and things get glitchy in this mode. ******************************************************************************* Fidelity Chess Challenger 10 (CCX) ------------------- 3 versions are known to exist: A,B,C. Strangely, version C(UCC10) has an 8080 instead of Z80 and no beeper, it's on CC1-based hardware. Z80A CPU @ 4MHz, NEC D8255C 4KB ROM(NEC 2332A), 2*256 bytes RAM(4*NEC 2111AL-4) The beeper is via a 556 timer, fixed-frequency at around 1300-1400Hz. Checker Challenger (ACR) is on the same PCB, twice less RAM and the beeper gone. In the 1980s, Fidelity started naming it Checker Challenger "4" in some of their advertisements, but box and manual still simply name it Checker Challenger. ******************************************************************************/ #include "emu.h" #include "cpu/z80/z80.h" #include "machine/bankdev.h" #include "machine/i8255.h" #include "machine/timer.h" #include "sound/beep.h" #include "video/pwm.h" #include "speaker.h" // internal artwork #include "fidel_acr.lh" // clickable #include "fidel_cc10.lh" // clickable namespace { class ccx_state : public driver_device { public: ccx_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_mainmap(*this, "mainmap"), m_ppi8255(*this, "ppi8255"), m_display(*this, "display"), m_beeper_off(*this, "beeper_off"), m_beeper(*this, "beeper"), m_inputs(*this, "IN.%u", 0) { } // RE button is tied to Z80 RESET pin DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); } // machine configs void acr(machine_config &config); void ccx(machine_config &config); protected: virtual void machine_start() override; private: // devices/pointers required_device m_maincpu; required_device m_mainmap; required_device m_ppi8255; required_device m_display; optional_device m_beeper_off; optional_device m_beeper; required_ioport_array<4> m_inputs; TIMER_DEVICE_CALLBACK_MEMBER(beeper_off) { m_beeper->set_state(0); } // address maps void acr_map(address_map &map); void ccx_map(address_map &map); void main_trampoline(address_map &map); void main_io(address_map &map); u8 main_trampoline_r(offs_t offset); void main_trampoline_w(offs_t offset, u8 data); // I/O handlers void update_display(); void ppi_porta_w(u8 data); void ppi_portb_w(u8 data); u8 ppi_portc_r(); void ppi_portc_w(u8 data); u8 m_inp_mux; u8 m_led_select; u8 m_7seg_data; }; void ccx_state::machine_start() { // zerofill m_inp_mux = 0; m_led_select = 0; m_7seg_data = 0; // register for savestates save_item(NAME(m_inp_mux)); save_item(NAME(m_led_select)); save_item(NAME(m_7seg_data)); } /****************************************************************************** I/O ******************************************************************************/ // I8255 PPI void ccx_state::update_display() { // 4 7segs + 2 leds m_display->matrix(m_led_select, m_7seg_data); } void ccx_state::ppi_porta_w(u8 data) { // d7: enable beeper on falling edge (556 monostable) (unpopulated on ACR) if (m_beeper != nullptr && ~data & m_7seg_data & 0x80 && !m_beeper_off->enabled()) { m_beeper->set_state(1); m_beeper_off->adjust(attotime::from_msec(80)); // duration is approximate } // d0-d6: digit segment data m_7seg_data = bitswap<8>(data,7,0,1,2,3,4,5,6); update_display(); } void ccx_state::ppi_portb_w(u8 data) { // d0: lose led, d1: check(win) led // d2-d5: digit select m_led_select = bitswap<6>(data,0,1,5,4,3,2); update_display(); } u8 ccx_state::ppi_portc_r() { u8 data = 0; // d0-d3: multiplexed inputs (active low) for (int i = 0; i < 4; i++) if (BIT(m_inp_mux, i)) data |= m_inputs[i]->read(); return ~data & 0xf; } void ccx_state::ppi_portc_w(u8 data) { // d4-d7: input mux (inverted) m_inp_mux = ~data >> 4 & 0xf; } /****************************************************************************** Address Maps ******************************************************************************/ void ccx_state::acr_map(address_map &map) { map.unmap_value_high(); map(0x0000, 0x0fff).rom().region("maincpu", 0); // _A12 map(0x2000, 0x20ff).mirror(0x0f00).ram(); // A13 } void ccx_state::ccx_map(address_map &map) { acr_map(map); map(0x4000, 0x40ff).mirror(0x0f00).ram(); // A14 } // PCB design is prone to bus conflicts, but assuming software behaves fine, // it will access ROM at $0xxx, RAM at $3xxx and $5xxx void ccx_state::main_trampoline_w(offs_t offset, u8 data) { if (offset & 0x2000) m_mainmap->write8(offset & 0x2fff, data); if (offset & 0x4000) m_mainmap->write8(offset & 0x4fff, data); } u8 ccx_state::main_trampoline_r(offs_t offset) { u8 data = 0xff; if (~offset & 0x1000) data &= m_mainmap->read8(offset & 0x0fff); if (offset & 0x2000) data &= m_mainmap->read8(offset & 0x2fff); if (offset & 0x4000) data &= m_mainmap->read8(offset & 0x4fff); return data; } void ccx_state::main_trampoline(address_map &map) { map.global_mask(0x7fff); map(0x0000, 0x7fff).rw(FUNC(ccx_state::main_trampoline_r), FUNC(ccx_state::main_trampoline_w)); } void ccx_state::main_io(address_map &map) { map.global_mask(0x03); map(0x00, 0x03).rw(m_ppi8255, FUNC(i8255_device::read), FUNC(i8255_device::write)); } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( ccx ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED) 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) PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("Speaker") 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.2") 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.3") 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("RESET") // is not on matrix IN.0 d0 PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("RE") PORT_CODE(KEYCODE_R) PORT_CHANGED_MEMBER(DEVICE_SELF, ccx_state, reset_button, 0) INPUT_PORTS_END static INPUT_PORTS_START( acr ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_UNUSED) 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("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) 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("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.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("TO") PORT_CODE(KEYCODE_T) 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.3") 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("RESET") // is not on matrix IN.0 d0 PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("RE") PORT_CODE(KEYCODE_R) PORT_CHANGED_MEMBER(DEVICE_SELF, ccx_state, reset_button, 0) INPUT_PORTS_END /****************************************************************************** Machine Configs ******************************************************************************/ void ccx_state::acr(machine_config &config) { /* basic machine hardware */ Z80(config, m_maincpu, 4_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &ccx_state::main_trampoline); ADDRESS_MAP_BANK(config, m_mainmap).set_map(&ccx_state::acr_map).set_options(ENDIANNESS_LITTLE, 8, 16); m_maincpu->set_addrmap(AS_IO, &ccx_state::main_io); I8255(config, m_ppi8255); m_ppi8255->out_pa_callback().set(FUNC(ccx_state::ppi_porta_w)); m_ppi8255->tri_pa_callback().set_constant(0); m_ppi8255->in_pb_callback().set_constant(0); m_ppi8255->out_pb_callback().set(FUNC(ccx_state::ppi_portb_w)); m_ppi8255->tri_pb_callback().set_constant(0); m_ppi8255->in_pc_callback().set(FUNC(ccx_state::ppi_portc_r)); m_ppi8255->out_pc_callback().set(FUNC(ccx_state::ppi_portc_w)); /* video hardware */ PWM_DISPLAY(config, m_display).set_size(6, 8); m_display->set_segmask(0xf, 0x7f); config.set_default_layout(layout_fidel_acr); } void ccx_state::ccx(machine_config &config) { acr(config); /* basic machine hardware */ m_mainmap->set_addrmap(AS_PROGRAM, &ccx_state::ccx_map); config.set_default_layout(layout_fidel_cc10); /* sound hardware */ SPEAKER(config, "speaker").front_center(); BEEP(config, m_beeper, 1360); // approximation, from 556 timer ic m_beeper->add_route(ALL_OUTPUTS, "speaker", 0.25); TIMER(config, "beeper_off").configure_generic(FUNC(ccx_state::beeper_off)); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( cc10 ) // model CCX, PCB label P241C-1 ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "cn19053n_cc10b", 0x0000, 0x1000, CRC(afd3ca99) SHA1(870d09b2b52ccb8572d69642c59b5215d5fb26ab) ) // 2332 ROM_END ROM_START( cc10a ) // model CCX ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "cc-10", 0x0000, 0x1000, CRC(853db345) SHA1(36799e204eb0aef915eb483a5f43372fca5a0fc0) ) // MCM68A332P ROM_END ROM_START( checkc4 ) // model ACR, PCB label P241C ROM_REGION( 0x10000, "maincpu", 0 ) ROM_LOAD( "d2332c_043", 0x0000, 0x1000, CRC(4c251d90) SHA1(474d54b05971f2a3208bab56dc6e27f03781c541) ) // no custom label ROM_END } // anonymous namespace /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS CONS( 1978, cc10, 0, 0, ccx, ccx, ccx_state, empty_init, "Fidelity Electronics", "Chess Challenger \"10\" (model CCX, rev. B)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1978, cc10a, cc10, 0, ccx, ccx, ccx_state, empty_init, "Fidelity Electronics", "Chess Challenger \"10\" (model CCX)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) // aka version A CONS( 1978, checkc4, 0, 0, acr, acr, ccx_state, empty_init, "Fidelity Electronics", "Checker Challenger (model ACR, 4 levels)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_NO_SOUND_HW )