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Diffstat (limited to 'src/mame/drivers/fidel_sc6.cpp')
-rw-r--r-- | src/mame/drivers/fidel_sc6.cpp | 224 |
1 files changed, 224 insertions, 0 deletions
diff --git a/src/mame/drivers/fidel_sc6.cpp b/src/mame/drivers/fidel_sc6.cpp new file mode 100644 index 00000000000..73096ca136d --- /dev/null +++ b/src/mame/drivers/fidel_sc6.cpp @@ -0,0 +1,224 @@ +// license:BSD-3-Clause +// copyright-holders:hap +// thanks-to:yoyo_chessboard +/****************************************************************************** +* +* fidel_sc6.cpp, subdriver of machine/fidelbase.cpp, machine/chessbase.cpp + +******************************************************************************* + +Fidelity Sensory Chess Challenger 6 (model SC6) overview: +- PCB label 510-1045B01 +- INS8040N-11 MCU, 11MHz XTAL +- external 4KB ROM 2332 101-1035A01, in module slot +- buzzer, 2 7seg LEDs, 8*8 chessboard buttons + +released modules, * denotes not dumped yet: +- *BO6: Book Openings I +- *CG6: Greatest Chess Games 1 +- SC6: pack-in, original program + +SC6 program is contained in BO6 and CG6. + +******************************************************************************/ + +#include "emu.h" +#include "includes/fidelbase.h" + +#include "cpu/mcs48/mcs48.h" +#include "sound/volt_reg.h" +#include "speaker.h" + +// internal artwork +#include "fidel_sc6.lh" // clickable + + +namespace { + +class sc6_state : public fidelbase_state +{ +public: + sc6_state(const machine_config &mconfig, device_type type, const char *tag) : + fidelbase_state(mconfig, type, tag), + m_maincpu(*this, "maincpu") + { } + + // machine drivers + void sc6(machine_config &config); + +private: + // devices/pointers + required_device<mcs48_cpu_device> m_maincpu; + + // address maps + void main_map(address_map &map); + + DECLARE_DEVICE_IMAGE_LOAD_MEMBER(cartridge); + + // I/O handlers + void prepare_display(); + DECLARE_WRITE8_MEMBER(mux_w); + DECLARE_WRITE8_MEMBER(select_w); + DECLARE_READ8_MEMBER(input_r); + DECLARE_READ_LINE_MEMBER(input6_r); + DECLARE_READ_LINE_MEMBER(input7_r); +}; + + +/****************************************************************************** + Devices, I/O +******************************************************************************/ + +// cartridge + +DEVICE_IMAGE_LOAD_MEMBER(sc6_state, cartridge) +{ + u32 size = m_cart->common_get_size("rom"); + + // 4KB ROM only? + if (size != 0x1000) + { + image.seterror(IMAGE_ERROR_UNSPECIFIED, "Invalid file size"); + return image_init_result::FAIL; + } + + m_cart->rom_alloc(size, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE); + m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom"); + + return image_init_result::PASS; +} + + +// MCU ports/generic + +void sc6_state::prepare_display() +{ + // 2 7seg leds + set_display_segmask(3, 0x7f); + display_matrix(7, 2, m_7seg_data, m_led_select); +} + +WRITE8_MEMBER(sc6_state::mux_w) +{ + // P24-P27: 7442 A-D + u16 sel = 1 << (data >> 4 & 0xf) & 0x3ff; + + // 7442 0-8: input mux, 7seg data + m_inp_mux = sel & 0x1ff; + m_7seg_data = sel & 0x7f; + prepare_display(); + + // 7442 9: speaker out + m_dac->write(BIT(sel, 9)); +} + +WRITE8_MEMBER(sc6_state::select_w) +{ + // P16,P17: digit select + m_led_select = ~data >> 6 & 3; + prepare_display(); +} + +READ8_MEMBER(sc6_state::input_r) +{ + // P10-P15: multiplexed inputs low + return (~read_inputs(9) & 0x3f) | 0xc0; +} + +READ_LINE_MEMBER(sc6_state::input6_r) +{ + // T0: multiplexed inputs bit 6 + return ~read_inputs(9) >> 6 & 1; +} + +READ_LINE_MEMBER(sc6_state::input7_r) +{ + // T1: multiplexed inputs bit 7 + return ~read_inputs(9) >> 7 & 1; +} + + + +/****************************************************************************** + Address Maps +******************************************************************************/ + +void sc6_state::main_map(address_map &map) +{ + map(0x0000, 0x0fff).r("cartslot", FUNC(generic_slot_device::read_rom)); +} + + + +/****************************************************************************** + Input Ports +******************************************************************************/ + +static INPUT_PORTS_START( sc6 ) + 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("RV / Pawn") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_NAME("DM / Knight") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_NAME("TB / Bishop") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_NAME("LV / Rook") + PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_NAME("PV / Queen") + PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_NAME("PB / 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 sc6_state::sc6(machine_config &config) +{ + /* basic machine hardware */ + I8040(config, m_maincpu, 11_MHz_XTAL); + m_maincpu->set_addrmap(AS_PROGRAM, &sc6_state::main_map); + m_maincpu->p2_out_cb().set(FUNC(sc6_state::mux_w)); + m_maincpu->p1_in_cb().set(FUNC(sc6_state::input_r)); + m_maincpu->p1_out_cb().set(FUNC(sc6_state::select_w)); + m_maincpu->t0_in_cb().set(FUNC(sc6_state::input6_r)); + m_maincpu->t1_in_cb().set(FUNC(sc6_state::input7_r)); + + TIMER(config, "display_decay").configure_periodic(FUNC(sc6_state::display_decay_tick), attotime::from_msec(1)); + config.set_default_layout(layout_fidel_sc6); + + /* 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); + + /* cartridge */ + GENERIC_CARTSLOT(config, m_cart, generic_plain_slot, "fidel_sc6", "bin"); + m_cart->set_device_load(device_image_load_delegate(&sc6_state::device_image_load_cartridge, this)); + m_cart->set_must_be_loaded(true); + + SOFTWARE_LIST(config, "cart_list").set_original("fidel_sc6"); +} + + + +/****************************************************************************** + ROM Definitions +******************************************************************************/ + +ROM_START( fscc6 ) + ROM_REGION( 0x1000, "maincpu", ROMREGION_ERASE00 ) + // none here, it's in the module slot +ROM_END + +} // anonymous namespace + + + +/****************************************************************************** + Drivers +******************************************************************************/ + +// YEAR NAME PARENT CMP MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS +CONS( 1982, fscc6, 0, 0, sc6, sc6, sc6_state, empty_init, "Fidelity Electronics", "Sensory Chess Challenger 6", MACHINE_SUPPORTS_SAVE | MACHINE_CLICKABLE_ARTWORK | MACHINE_IMPERFECT_CONTROLS ) |