// license:BSD-3-Clause // copyright-holders:Sandro Ronco /************************************************************************************************** Mephisto Modena The chess engine is by Frans Morsch, same one as Sphinx Dominator 2.05. Hold Pawn + Knight buttons at boot for test mode. **************************************************************************************************/ #include "emu.h" #include "cpu/m6502/m65c02.h" #include "machine/nvram.h" #include "machine/mmboard.h" #include "machine/timer.h" #include "sound/dac.h" #include "sound/volt_reg.h" #include "speaker.h" #include "mephisto_modena.lh" class mephisto_modena_state : public driver_device { public: mephisto_modena_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_board(*this, "board") , m_dac(*this, "dac") , m_keys(*this, "KEY") , m_digits(*this, "digit%u", 0U) , m_leds(*this, "led%u.%u", 0U, 0U) { } void modena(machine_config &config); protected: virtual void machine_reset() override; virtual void machine_start() override; private: required_device m_maincpu; required_device m_board; required_device m_dac; required_ioport m_keys; output_finder<4> m_digits; output_finder<3, 8> m_leds; void modena_mem(address_map &map); DECLARE_READ8_MEMBER(input_r); DECLARE_WRITE8_MEMBER(digits_w); DECLARE_WRITE8_MEMBER(io_w); DECLARE_WRITE8_MEMBER(led_w); TIMER_DEVICE_CALLBACK_MEMBER(nmi_on) { m_maincpu->set_input_line(M6502_NMI_LINE, ASSERT_LINE); } TIMER_DEVICE_CALLBACK_MEMBER(nmi_off) { m_maincpu->set_input_line(M6502_NMI_LINE, CLEAR_LINE); } uint8_t m_digits_idx = 0; uint8_t m_io_ctrl = 0; }; void mephisto_modena_state::machine_start() { m_digits.resolve(); m_leds.resolve(); save_item(NAME(m_digits_idx)); save_item(NAME(m_io_ctrl)); } void mephisto_modena_state::machine_reset() { m_digits_idx = 0; m_io_ctrl = 0; } /****************************************************************************** I/O ******************************************************************************/ READ8_MEMBER(mephisto_modena_state::input_r) { if (m_board->mux_r(space, offset) == 0xff) return m_keys->read(); else return m_board->input_r(space, offset) ^ 0xff; } WRITE8_MEMBER(mephisto_modena_state::led_w) { m_board->mux_w(space, offset, data); for (int sel = 0; sel < 3; sel++) { if (BIT(m_io_ctrl, sel+1)) { for (int i = 0; i < 8; i++) m_leds[sel][i] = BIT(data, i) ? 0 : 1; } } } WRITE8_MEMBER(mephisto_modena_state::io_w) { m_io_ctrl = data; m_dac->write(BIT(data, 6)); } WRITE8_MEMBER(mephisto_modena_state::digits_w) { m_digits[m_digits_idx] = data ^ ((m_io_ctrl & 0x10) ? 0xff : 0x00); m_digits_idx = (m_digits_idx + 1) & 3; } /****************************************************************************** Address Maps ******************************************************************************/ void mephisto_modena_state::modena_mem(address_map &map) { map(0x0000, 0x1fff).ram().share("nvram"); map(0x4000, 0x4000).w(FUNC(mephisto_modena_state::digits_w)); map(0x5000, 0x5000).w(FUNC(mephisto_modena_state::led_w)); map(0x6000, 0x6000).w(FUNC(mephisto_modena_state::io_w)); map(0x7000, 0x7fff).r(FUNC(mephisto_modena_state::input_r)); map(0x8000, 0xffff).rom().region("maincpu", 0); } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( modena ) PORT_START("KEY") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("BOOK") PORT_CODE(KEYCODE_B) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("INFO") PORT_CODE(KEYCODE_I) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("MEMORY") PORT_CODE(KEYCODE_M) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("POSITION") PORT_CODE(KEYCODE_O) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("LEVEL") PORT_CODE(KEYCODE_L) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("FUNCTION") PORT_CODE(KEYCODE_F) PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_F1) // combine for NEW GAME PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME("CLEAR") PORT_CODE(KEYCODE_BACKSPACE) PORT_CODE(KEYCODE_DEL) PORT_CODE(KEYCODE_F1) // " INPUT_PORTS_END /****************************************************************************** Machine Configs ******************************************************************************/ void mephisto_modena_state::modena(machine_config &config) { M65C02(config, m_maincpu, XTAL(4'194'304)); // W65C02SP or RP65C02G m_maincpu->set_addrmap(AS_PROGRAM, &mephisto_modena_state::modena_mem); timer_device &nmi_on(TIMER(config, "nmi_on")); nmi_on.configure_periodic(FUNC(mephisto_modena_state::nmi_on), attotime::from_hz(XTAL(4'194'304) / (1 << 13))); nmi_on.set_start_delay(attotime::from_hz(XTAL(4'194'304) / (1 << 13)) - attotime::from_usec(975)); // active for 975us TIMER(config, "nmi_off").configure_periodic(FUNC(mephisto_modena_state::nmi_off), attotime::from_hz(XTAL(4'194'304) / (1 << 13))); NVRAM(config, "nvram", nvram_device::DEFAULT_ALL_0); MEPHISTO_BUTTONS_BOARD(config, m_board); m_board->set_disable_leds(true); config.set_default_layout(layout_mephisto_modena); /* 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( modena ) ROM_REGION( 0x8000, "maincpu", 0 ) ROM_LOAD("modena_12aug1992_441d.u3", 0x0000, 0x8000, CRC(dd7b4920) SHA1(4606b9d1f8a30180aabedfc0ed3cca0c96618524) ) ROM_END ROM_START( modenaa ) ROM_REGION( 0x8000, "maincpu", 0 ) ROM_LOAD("27c256_457f.u3", 0x0000, 0x8000, CRC(2889082c) SHA1(b63f0d856793b4f87471837e2219ce2a42fe18de) ) ROM_END ROM_START( modenab ) ROM_REGION( 0x8000, "maincpu", 0 ) ROM_LOAD("modena_4929_270192.u3", 0x0000, 0x8000, CRC(99212677) SHA1(f0565e5441fb38df201176d01793c953886b0303) ) ROM_END /*************************************************************************** Game driver(s) ***************************************************************************/ /* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ CONS( 1992, modena, 0, 0, modena, modena, mephisto_modena_state, empty_init, "Hegener + Glaser", "Mephisto Modena (set 1)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1992, modenaa, modena, 0, modena, modena, mephisto_modena_state, empty_init, "Hegener + Glaser", "Mephisto Modena (set 2)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK ) CONS( 1992, modenab, modena, 0, modena, modena, mephisto_modena_state, empty_init, "Hegener + Glaser", "Mephisto Modena (set 3)", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )