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Diffstat (limited to 'src/mame/drivers/cxg_ch2001.cpp')
-rw-r--r--src/mame/drivers/cxg_ch2001.cpp193
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diff --git a/src/mame/drivers/cxg_ch2001.cpp b/src/mame/drivers/cxg_ch2001.cpp
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+// license:BSD-3-Clause
+// copyright-holders:hap
+// thanks-to:Berger
+/******************************************************************************
+*
+* cxg_ch2001.cpp, subdriver of machine/chessbase.cpp
+
+*******************************************************************************
+
+CXG Chess 2001 overview:
+- Zilog Z8400APS @ 4 MHz (8MHz XTAL)
+- 2KB RAM HM6116, 16KB ROM D27128D
+- TTL, piezo, 8*8+9 LEDs, magnetic sensors
+
+******************************************************************************/
+
+#include "emu.h"
+#include "includes/chessbase.h"
+
+#include "cpu/z80/z80.h"
+#include "sound/dac.h"
+#include "sound/volt_reg.h"
+#include "speaker.h"
+
+// internal artwork
+#include "cxg_ch2001.lh" // clickable
+
+
+namespace {
+
+class ch2001_state : public chessbase_state
+{
+public:
+ ch2001_state(const machine_config &mconfig, device_type type, const char *tag) :
+ chessbase_state(mconfig, type, tag),
+ m_maincpu(*this, "maincpu"),
+ m_irq_on(*this, "irq_on"),
+ m_dac(*this, "dac"),
+ m_speaker_off(*this, "speaker_off")
+ { }
+
+ // machine drivers
+ void ch2001(machine_config &config);
+
+private:
+ // devices/pointers
+ required_device<cpu_device> m_maincpu;
+ required_device<timer_device> m_irq_on;
+ required_device<dac_bit_interface> m_dac;
+ required_device<timer_device> m_speaker_off;
+
+ // periodic interrupts
+ template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_on) { m_maincpu->set_input_line(Line, ASSERT_LINE); }
+ template<int Line> TIMER_DEVICE_CALLBACK_MEMBER(irq_off) { m_maincpu->set_input_line(Line, CLEAR_LINE); }
+
+ TIMER_DEVICE_CALLBACK_MEMBER(speaker_off) { m_dac->write(0); }
+
+ // address maps
+ void main_map(address_map &map);
+
+ // I/O handlers
+ DECLARE_WRITE8_MEMBER(speaker_w);
+ DECLARE_WRITE8_MEMBER(leds_w);
+ DECLARE_READ8_MEMBER(input_r);
+};
+
+
+
+/******************************************************************************
+ Devices, I/O
+******************************************************************************/
+
+// TTL
+
+WRITE8_MEMBER(ch2001_state::speaker_w)
+{
+ // 74ls109 clock pulse to speaker
+ m_dac->write(1);
+ m_speaker_off->adjust(attotime::from_usec(200)); // not accurate
+}
+
+WRITE8_MEMBER(ch2001_state::leds_w)
+{
+ // d0-d7: 74ls273 (WR to CLK)
+ // 74ls273 Q1-Q4: 74ls145 A-D
+ // 74ls145 0-9: input mux/led select
+ m_inp_mux = 1 << (data & 0xf) & 0x3ff;
+
+ // 74ls273 Q5-Q8: MC14028 A-D
+ // MC14028 Q0-Q7: led data, Q8,Q9: N/C
+ u8 led_data = 1 << (data >> 4 & 0xf) & 0xff;
+ display_matrix(8, 10, led_data, m_inp_mux);
+}
+
+READ8_MEMBER(ch2001_state::input_r)
+{
+ // d0-d7: multiplexed inputs
+ return ~read_inputs(10);
+}
+
+
+
+/******************************************************************************
+ Address Maps
+******************************************************************************/
+
+void ch2001_state::main_map(address_map &map)
+{
+ map(0x0000, 0x3fff).rom();
+ map(0x4000, 0x47ff).mirror(0x3800).ram();
+ map(0x8000, 0x8000).mirror(0x3fff).rw(FUNC(ch2001_state::input_r), FUNC(ch2001_state::leds_w));
+ map(0xc000, 0xc000).mirror(0x3fff).w(FUNC(ch2001_state::speaker_w));
+}
+
+
+
+/******************************************************************************
+ Input Ports
+******************************************************************************/
+
+static INPUT_PORTS_START( ch2001 )
+ PORT_INCLUDE( generic_cb_magnets )
+
+ PORT_START("IN.8")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_T) PORT_NAME("Black")
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_NAME("King")
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_NAME("Queen")
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_NAME("Rook")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_W) PORT_NAME("Bishop")
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_E) PORT_NAME("Knight")
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("Pawn")
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_NAME("White")
+
+ PORT_START("IN.9")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_NAME("Set up")
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Q) PORT_NAME("New Game")
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_U) PORT_NAME("Take Back")
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_Y) PORT_NAME("Forward")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_NAME("Hint")
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_I) PORT_NAME("Move")
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_8) PORT_NAME("Level")
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_7) PORT_NAME("Sound")
+INPUT_PORTS_END
+
+
+
+/******************************************************************************
+ Machine Drivers
+******************************************************************************/
+
+void ch2001_state::ch2001(machine_config &config)
+{
+ /* basic machine hardware */
+ Z80(config, m_maincpu, 8_MHz_XTAL/2);
+ m_maincpu->set_addrmap(AS_PROGRAM, &ch2001_state::main_map);
+
+ const attotime irq_period = attotime::from_hz(484); // theoretical frequency from 555 timer (22nF, 100K+33K, 1K2), measurement was 568Hz
+ TIMER(config, m_irq_on).configure_periodic(FUNC(ch2001_state::irq_on<INPUT_LINE_IRQ0>), irq_period);
+ m_irq_on->set_start_delay(irq_period - attotime::from_nsec(18300)); // active for 18.3us
+ TIMER(config, "irq_off").configure_periodic(FUNC(ch2001_state::irq_off<INPUT_LINE_IRQ0>), irq_period);
+
+ TIMER(config, m_speaker_off).configure_generic(FUNC(ch2001_state::speaker_off));
+
+ TIMER(config, "display_decay").configure_periodic(FUNC(ch2001_state::display_decay_tick), attotime::from_msec(1));
+ config.set_default_layout(layout_cxg_ch2001);
+
+ /* 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( ch2001 )
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD("ch2001.bin", 0x0000, 0x4000, CRC(b3485c73) SHA1(f405c6f67fe70edf45dcc383a4049ee6bad387a9) ) // D27128D, no label
+ROM_END
+
+} // anonymous namespace
+
+
+
+/******************************************************************************
+ Drivers
+******************************************************************************/
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
+CONS( 1984, ch2001, 0, 0, ch2001, ch2001, ch2001_state, empty_init, "CXG", "Chess 2001", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_CONTROLS )