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Diffstat (limited to 'src/mame/drivers/debut.cpp')
-rw-r--r-- | src/mame/drivers/debut.cpp | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/src/mame/drivers/debut.cpp b/src/mame/drivers/debut.cpp new file mode 100644 index 00000000000..20e87429000 --- /dev/null +++ b/src/mame/drivers/debut.cpp @@ -0,0 +1,276 @@ +// license:BSD-3-Clause +// copyright-holders:hap +/****************************************************************************** + +Дебют / Дебют-М (Debut) Chess Computer + +Released in 1994 in Russian Federation by ЭНЕРГОПРИБОР (Energopribor), Moscow. +It's running the Mirage chess engine by Vladimir Rybinkin, originally made for MS-DOS. + +TODO: +- where is lcd segments common active state? (see m_lcd_data), current implementation + is wrong, it will occasionally display wrong (inverted) digits +- where does the interrupt come from? +- Debut-M is an updated version? Or is it the same program as Debut with a redesigned case? + +******************************************************************************* + +Hardware notes: +- КР1810ВМ86 (i8086 clone), 16200K XTAL +- КР1810ГФ84 (i8284 clock divider /3) +- 2*КР537РУ10 (2KB*8 RAM), 2*8KB ROM +- lcd panel (4 7seg digits), 64 chessboard buttons, 16 leds + +A bit more detailed, list of other Soviet standard TTL chips used and their equivalents: +- 2*КР580ИР82 = Intel 8282, aka 74573 +- 2*К555ЛЛ1 = 7432 +- К555ИЛ7 = 74138 +- К555ИД10В = 74145 +- КМ555КЛ15 = 74251 +- К561ЛЕ5А = CD4001 +- PC74HC259P = the odd one out + +keypad legend: + +АН - анализ (analysis, switches view info) +ХОД - ходи (force move) +ИНТ - интерактивность (interactivity, switches 1P vs CPU, or 2P) +ПОЗ - позиция (position mode) +ВФ - выбор фигуры (select piece) +ВП - возврат (take back 2 plies) +УР - уровень игры (level) +ВВ - ввод позиции (enter position) +СБ - сброс / новая игра (reset / new game) + +******************************************************************************/ + +#include "emu.h" +#include "cpu/i86/i86.h" +#include "machine/sensorboard.h" +#include "sound/dac.h" +#include "sound/volt_reg.h" +#include "video/pwm.h" +#include "speaker.h" + +// internal artwork +#include "debutm.lh" // clickable + + +namespace { + +class debut_state : public driver_device +{ +public: + debut_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_display(*this, "display"), + m_dac(*this, "dac"), + m_out_digit(*this, "digit%u", 0U), + m_inputs(*this, "IN.0") + { } + + // assume that RESET button is tied to CPU RESET pin + DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); } + + // machine drivers + void debutm(machine_config &config); + +protected: + virtual void machine_start() override; + +private: + // devices/pointers + required_device<cpu_device> m_maincpu; + required_device<sensorboard_device> m_board; + required_device<pwm_display_device> m_display; + required_device<dac_bit_interface> m_dac; + output_finder<4> m_out_digit; + required_ioport m_inputs; + + // address maps + void main_map(address_map &map); + void main_io(address_map &map); + + // I/O handlers + INTERRUPT_GEN_MEMBER(interrupt); + DECLARE_READ8_MEMBER(input_r); + DECLARE_WRITE8_MEMBER(control_w); + + u8 m_select; + u8 m_dac_data; + u8 m_lcd_data; + u8 m_digit_data[4]; +}; + +void debut_state::machine_start() +{ + // resolve handlers + m_out_digit.resolve(); + + // zerofill + m_select = 0; + m_dac_data = 0; + m_lcd_data = 0; + memset(m_digit_data, 0, sizeof(m_digit_data)); + + // register for savestates + save_item(NAME(m_select)); + save_item(NAME(m_dac_data)); + save_item(NAME(m_lcd_data)); + save_item(NAME(m_digit_data)); +} + + + +/****************************************************************************** + I/O +******************************************************************************/ + +INTERRUPT_GEN_MEMBER(debut_state::interrupt) +{ + m_maincpu->set_input_line_and_vector(0, HOLD_LINE, 0xff); // I8086 +} + +READ8_MEMBER(debut_state::input_r) +{ + u8 data = 0; + u8 sel = m_select & 0xf; + + // a1-a3,d0: multiplexed inputs + // read keypad + if (sel == 0) + data = BIT(m_inputs->read(), offset); + + // read chessboard sensors + else if (sel < 9) + data = BIT(m_board->read_rank(sel - 1), offset); + + return ~data; +} + +WRITE8_MEMBER(debut_state::control_w) +{ + u8 mask = 1 << offset; + u8 prev = m_select; + + // a1-a3,d0: 74259 + m_select = (m_select & ~mask) | ((data & 1) ? mask : 0); + + // 74259 q0-q3: input mux/led select + // 74259 q4,q5: led data + m_display->matrix(~m_select >> 4 & 3, 1 << (m_select & 0xf)); + + // 74259 q7: toggle speaker + if (~m_select & prev & 0x80) + { + m_dac_data ^= 1; + m_dac->write(m_dac_data); + } + + // a1-a3,d1-d4 go to lcd panel + // clock lcd digit segments + for (int i = 0; i < 4; i++) + { + if (BIT(~data, i + 1)) + m_digit_data[i] = (m_digit_data[i] & ~mask) | (m_lcd_data << offset); + + m_out_digit[i] = bitswap<8>(m_digit_data[i],0,7,4,3,2,1,6,5); + } + + // where is lcd common state? + if (offset == 0) + m_lcd_data = BIT(~data, 4); +} + + + +/****************************************************************************** + Address Maps +******************************************************************************/ + +void debut_state::main_map(address_map &map) +{ + map.global_mask(0x7fff); + map(0x0000, 0x0fff).mirror(0x3000).ram(); + map(0x4000, 0x7fff).rom(); +} + +void debut_state::main_io(address_map &map) +{ + map(0x00, 0x0f).rw(FUNC(debut_state::input_r), FUNC(debut_state::control_w)).umask16(0x00ff); +} + + + +/****************************************************************************** + Input Ports +******************************************************************************/ + +static INPUT_PORTS_START( debutm ) + PORT_START("IN.0") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_A) PORT_NAME("АН (Analysis)") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_F) PORT_NAME("ХОД (Force Move)") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("ИНТ (Switch 1P/2P)") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_M) PORT_NAME("ПОЗ (Position Mode)") + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_S) PORT_NAME("ВФ (Select Piece)") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_B) PORT_NAME("ВП (Take Back)") + PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_L) PORT_NAME("УР (Level)") + PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_NAME("ВВ (Enter Position)") + + PORT_START("RESET") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_CHANGED_MEMBER(DEVICE_SELF, debut_state, reset_button, nullptr) PORT_NAME("СБ (Reset)") +INPUT_PORTS_END + + + +/****************************************************************************** + Machine Configs +******************************************************************************/ + +void debut_state::debutm(machine_config &config) +{ + /* basic machine hardware */ + I8086(config, m_maincpu, 16.2_MHz_XTAL / 3); + m_maincpu->set_periodic_int(FUNC(debut_state::interrupt), attotime::from_hz(400)); + m_maincpu->set_addrmap(AS_PROGRAM, &debut_state::main_map); + m_maincpu->set_addrmap(AS_IO, &debut_state::main_io); + + SENSORBOARD(config, m_board).set_type(sensorboard_device::BUTTONS); + 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(2, 9); + m_display->set_bri_maximum(0.5); + config.set_default_layout(layout_debutm); + + /* 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( debutm ) + ROM_REGION( 0x10000, "maincpu", 0 ) + ROM_LOAD16_BYTE("dd12", 0x4000, 0x2000, CRC(0f64ebab) SHA1(e069c387ec01e8786e4fb720630196ac27fac449) ) // no ROM labels, PCB ICs location = "DDxx" + ROM_LOAD16_BYTE("dd13", 0x4001, 0x2000, CRC(c171f5ac) SHA1(62dc030e3d60172f31f0d14944437b0fd4b53a2a) ) // " +ROM_END + +} // anonymous namespace + + + +/****************************************************************************** + Drivers +******************************************************************************/ + +// YEAR NAME PARENT CMP MACHINE INPUT CLASS INIT COMPANY, FULLNAME, FLAGS +CONS( 1994, debutm, 0, 0, debutm, debutm, debut_state, empty_init, "Energopribor", "Debut-M", MACHINE_SUPPORTS_SAVE | MACHINE_IMPERFECT_GRAPHICS | MACHINE_CLICKABLE_ARTWORK ) |