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Diffstat (limited to 'src/mame/drivers/fidel_sc8.cpp')
-rw-r--r-- | src/mame/drivers/fidel_sc8.cpp | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/mame/drivers/fidel_sc8.cpp b/src/mame/drivers/fidel_sc8.cpp new file mode 100644 index 00000000000..2e03a0458a4 --- /dev/null +++ b/src/mame/drivers/fidel_sc8.cpp @@ -0,0 +1,157 @@ +// 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 ) |