// license:BSD-3-Clause // copyright-holders:hap // thanks-to:Sean Riddle /****************************************************************************** Milton Bradley Milton This is the talking tabletop game, not the chess computer with the same name. Game 1: Match beginning of a phrase(red button) with end of phrase(yellow button). Game 2: Same as game 1, but all in one turn. Game 3: Press phrase end buttons, memorize them, press Go and match them. Hardware is an odd combination: MC6805P2 MCU, GI SP0250 speech + 2*TMC0430 GROM. See patent 4326710 for detailed information, except MC6805 clocked from SP0250 3.12MHz and GROM clocked by 3.12MHz/8=390kHz. ******************************************************************************/ #include "emu.h" #include "cpu/m6805/m68705.h" #include "machine/clock.h" #include "machine/tmc0430.h" #include "sound/sp0250.h" #include "speaker.h" // internal artwork #include "milton.lh" // clickable class milton_filter_device; class milton_state : public driver_device { public: milton_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag), m_maincpu(*this, "maincpu"), m_grom(*this, "grom%u", 0), m_speech(*this, "sp0250"), m_filter(*this, "filter"), m_inputs(*this, "IN.%u", 0) { } void milton(machine_config &config); DECLARE_INPUT_CHANGED_MEMBER(volume_changed); protected: virtual void machine_start() override; private: required_device m_maincpu; required_device_array m_grom; required_device m_speech; required_device m_filter; required_ioport_array<5> m_inputs; u8 m_data; u8 m_control; DECLARE_WRITE8_MEMBER(data_w); DECLARE_READ8_MEMBER(data_r); DECLARE_WRITE8_MEMBER(control_w); DECLARE_READ8_MEMBER(control_r); DECLARE_READ8_MEMBER(input_r); }; void milton_state::machine_start() { // zerofill m_data = 0; m_control = 0xff; // register for savestates save_item(NAME(m_data)); save_item(NAME(m_control)); } /****************************************************************************** LED Filter ******************************************************************************/ class milton_filter_device : public device_t, public device_sound_interface { public: milton_filter_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 0); protected: virtual void device_start() override; virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; private: sound_stream *m_stream; output_finder<> m_led_out; }; DEFINE_DEVICE_TYPE(MILTON_LED_FILTER, milton_filter_device, "milton_led_filter", "Milton LED Filter") milton_filter_device::milton_filter_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock) : device_t(mconfig, MILTON_LED_FILTER, tag, owner, clock), device_sound_interface(mconfig, *this), m_led_out(*this, "led") { } void milton_filter_device::device_start() { m_stream = stream_alloc(1, 1, machine().sample_rate()); m_led_out.resolve(); } void milton_filter_device::sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) { int level = 0; for (int i = 0; i < samples; i++) { level += abs(inputs[0][i]); outputs[0][i] = inputs[0][i]; } if (samples > 0) level /= samples; // 2 leds connected to the audio circuit const int threshold = 1500; m_led_out = (level > threshold) ? 1 : 0; } /****************************************************************************** I/O ******************************************************************************/ WRITE8_MEMBER(milton_state::data_w) { // TMC0430 + SP0250 data m_data = data; } READ8_MEMBER(milton_state::data_r) { if (machine().side_effects_disabled()) return 0; // TMC0430 data u8 data = 0; m_grom[0]->readz(&data); m_grom[1]->readz(&data); return data; } WRITE8_MEMBER(milton_state::control_w) { // d0-d4: input mux // d5: SP0250 data present if (~m_control & data & 0x20) m_speech->write(space, 0, m_data); // d1: TMC0430 M // d3: TMC0430 MO // d7: TMC0430 GS for (int i = 0; i < 2; i++) { m_grom[i]->m_line(BIT(data, 1)); m_grom[i]->mo_line(BIT(data, 3)); m_grom[i]->gsq_line(BIT(~data, 7)); } // write pending TMC0430 data if (m_control & ~data & 0x80 && ~data & 2) { m_grom[0]->write(m_data); m_grom[1]->write(m_data); } m_control = data; } READ8_MEMBER(milton_state::control_r) { if (machine().side_effects_disabled()) return 0; // d6: SP0250 data request // other: no function (DDRB = 0xbf) return m_speech->drq_r() ? 0x40 : 0; } READ8_MEMBER(milton_state::input_r) { u8 data = 0; // d0-d3: multiplexed inputs for (int i = 0; i < 5; i++) if (BIT(~m_control, i)) data |= m_inputs[i]->read(); return ~data; } /****************************************************************************** Input Ports ******************************************************************************/ static INPUT_PORTS_START( milton ) PORT_START("IN.0") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_U) PORT_NAME("Red Button 7") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Y) PORT_NAME("Red Button 6") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_NAME("Red Button 5") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("Red Button 4") PORT_START("IN.1") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_NAME("Red Button 3") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_W) PORT_NAME("Red Button 2") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Q) PORT_NAME("Red Button 1") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("Purple Button 1") PORT_START("IN.2") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_NAME("Purple Button 2") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_NAME("Purple Button 3") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Z) PORT_NAME("Go") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_X) PORT_NAME("Score") PORT_START("IN.3") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_C) PORT_NAME("Reset") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_A) PORT_NAME("Yellow Button 1") // starting at top, then clockwise PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_S) PORT_NAME("Yellow Button 2") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_D) PORT_NAME("Yellow Button 3") PORT_START("IN.4") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_F) PORT_NAME("Yellow Button 4") PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_G) PORT_NAME("Yellow Button 5") PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_H) PORT_NAME("Yellow Button 6") PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_J) PORT_NAME("Yellow Button 7") PORT_START("VOLUME") PORT_CONFNAME( 0x01, 0x00, "Volume" ) PORT_CHANGED_MEMBER(DEVICE_SELF, milton_state, volume_changed, 0) PORT_CONFSETTING( 0x01, "Low" ) PORT_CONFSETTING( 0x00, "High" ) INPUT_PORTS_END INPUT_CHANGED_MEMBER(milton_state::volume_changed) { m_filter->set_output_gain(0, newval ? 0.25 : 1.0); } /****************************************************************************** Machine Configs ******************************************************************************/ void milton_state::milton(machine_config &config) { /* basic machine hardware */ M6805P2(config, m_maincpu, 3.12_MHz_XTAL); m_maincpu->porta_w().set(FUNC(milton_state::data_w)); m_maincpu->porta_r().set(FUNC(milton_state::data_r)); m_maincpu->portb_w().set(FUNC(milton_state::control_w)); m_maincpu->portb_r().set(FUNC(milton_state::control_r)); m_maincpu->portc_r().set(FUNC(milton_state::input_r)); TMC0430(config, m_grom[0], "groms", 0x0000, 0); TMC0430(config, m_grom[1], "groms", 0x2000, 1); clock_device &gromclock(CLOCK(config, "gromclock", 3.12_MHz_XTAL/8)); gromclock.signal_handler().set(m_grom[0], FUNC(tmc0430_device::gclock_in)); gromclock.signal_handler().append(m_grom[1], FUNC(tmc0430_device::gclock_in)); config.set_default_layout(layout_milton); /* sound hardware */ SPEAKER(config, "speaker").front_center(); SP0250(config, m_speech, 3.12_MHz_XTAL).add_route(0, m_filter, 1.0, 0); MILTON_LED_FILTER(config, m_filter).add_route(0, "speaker", 1.0); } /****************************************************************************** ROM Definitions ******************************************************************************/ ROM_START( milton ) ROM_REGION( 0x800, "maincpu", 0 ) ROM_LOAD("sc87008p_783-4043-001", 0x000, 0x800, CRC(b054dbea) SHA1(b5339c8170e773b68505c3d60dc75249a583d60a) ) ROM_REGION( 0x4000, "groms", ROMREGION_ERASE00 ) ROM_LOAD("4043-003", 0x0000, 0x1800, CRC(d95df757) SHA1(6723480866f6393d310e304ef3b61e3a319a7beb) ) ROM_LOAD("4043-004", 0x2000, 0x1800, CRC(9ac929f7) SHA1(1a27d56fc49eb4e58ea3b5c58d7fbedc5a751592) ) ROM_END /****************************************************************************** Drivers ******************************************************************************/ // YEAR NAME PARENT CMP MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS CONS( 1980, milton, 0, 0, milton, milton, milton_state, empty_init, "Milton Bradley", "Electronic Milton", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK )