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Diffstat (limited to 'src/mame/drivers/fidel_sc8.cpp')
-rw-r--r--src/mame/drivers/fidel_sc8.cpp157
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diff --git a/src/mame/drivers/fidel_sc8.cpp b/src/mame/drivers/fidel_sc8.cpp
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+// license:BSD-3-Clause
+// copyright-holders:hap
+// thanks-to:yoyo_chessboard
+/******************************************************************************
+*
+* fidel_sc8.cpp, subdriver of machine/fidelbase.cpp, machine/chessbase.cpp
+
+*******************************************************************************
+
+Fidelity Sensory Chess Challenger 8 overview:
+- Z80A CPU @ 3.9MHz
+- 4KB ROM(MOS 2732), 256 bytes RAM(35391CP)
+- chessboard buttons, 8*8+1 leds
+- PCB label 510-1011 REV.2
+
+******************************************************************************/
+
+#include "emu.h"
+#include "includes/fidelbase.h"
+
+#include "cpu/z80/z80.h"
+#include "sound/volt_reg.h"
+#include "speaker.h"
+
+// internal artwork
+#include "fidel_sc8.lh" // clickable
+
+
+namespace {
+
+class scc_state : public fidelbase_state
+{
+public:
+ scc_state(const machine_config &mconfig, device_type type, const char *tag) :
+ fidelbase_state(mconfig, type, tag)
+ { }
+
+ // machine drivers
+ void scc(machine_config &config);
+
+private:
+ // address maps
+ void main_map(address_map &map);
+ void main_io(address_map &map);
+
+ // I/O handlers
+ DECLARE_READ8_MEMBER(input_r);
+ DECLARE_WRITE8_MEMBER(control_w);
+};
+
+
+/******************************************************************************
+ Devices, I/O
+******************************************************************************/
+
+// TTL
+
+WRITE8_MEMBER(scc_state::control_w)
+{
+ // a0-a2,d7: led data
+ u8 mask = 1 << (offset & 7);
+ m_led_data = (m_led_data & ~mask) | ((data & 0x80) ? mask : 0);
+
+ // d0-d3: led select, input mux (row 9 is speaker out)
+ // d4: corner led(direct)
+ m_inp_mux = 1 << (data & 0xf);
+ m_dac->write(BIT(m_inp_mux, 9));
+ display_matrix(8, 9, m_led_data, (m_inp_mux & 0xff) | (data << 4 & 0x100));
+}
+
+READ8_MEMBER(scc_state::input_r)
+{
+ // d0-d7: multiplexed inputs (active low)
+ return ~read_inputs(9);
+}
+
+
+
+/******************************************************************************
+ Address Maps
+******************************************************************************/
+
+void scc_state::main_map(address_map &map)
+{
+ map(0x0000, 0x0fff).rom();
+ map(0x5000, 0x50ff).ram();
+}
+
+void scc_state::main_io(address_map &map)
+{
+ map.global_mask(0x07);
+ map(0x00, 0x07).rw(FUNC(scc_state::input_r), FUNC(scc_state::control_w));
+}
+
+
+
+/******************************************************************************
+ Input Ports
+******************************************************************************/
+
+static INPUT_PORTS_START( scc )
+ PORT_INCLUDE( generic_cb_buttons )
+
+ PORT_START("IN.8")
+ PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_NAME("Pawn")
+ PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("Rook")
+ PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("Knight")
+ PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("Bishop")
+ PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("Queen")
+ PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("King")
+ PORT_BIT(0x40, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_DEL) PORT_NAME("CL")
+ PORT_BIT(0x80, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_R) PORT_NAME("RE")
+INPUT_PORTS_END
+
+
+
+/******************************************************************************
+ Machine Drivers
+******************************************************************************/
+
+void scc_state::scc(machine_config &config)
+{
+ /* basic machine hardware */
+ Z80(config, m_maincpu, 3.9_MHz_XTAL);
+ m_maincpu->set_addrmap(AS_PROGRAM, &scc_state::main_map);
+ m_maincpu->set_addrmap(AS_IO, &scc_state::main_io);
+
+ TIMER(config, "display_decay").configure_periodic(FUNC(scc_state::display_decay_tick), attotime::from_msec(1));
+ config.set_default_layout(layout_fidel_sc8);
+
+ /* 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( fscc8 ) // model SCC
+ ROM_REGION( 0x10000, "maincpu", 0 )
+ ROM_LOAD( "101-32017", 0x0000, 0x1000, CRC(5340820d) SHA1(e3494c7624b3cacbbb9a0a8cc9e1ed3e00326dfd) ) // 2732
+ROM_END
+
+} // anonymous namespace
+
+
+
+/******************************************************************************
+ Drivers
+******************************************************************************/
+
+// YEAR NAME PARENT CMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS
+CONS( 1980, fscc8, 0, 0, scc, scc, scc_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger 8", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_CONTROLS )