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Diffstat (limited to 'src/mame/drivers/lk3000.cpp')
-rw-r--r-- | src/mame/drivers/lk3000.cpp | 354 |
1 files changed, 354 insertions, 0 deletions
diff --git a/src/mame/drivers/lk3000.cpp b/src/mame/drivers/lk3000.cpp new file mode 100644 index 00000000000..e1c7dd84b7d --- /dev/null +++ b/src/mame/drivers/lk3000.cpp @@ -0,0 +1,354 @@ +// license:BSD-3-Clause +// copyright-holders:hap +// thanks-to:Sean Riddle +/****************************************************************************** + +Lexicon LK-3000, a pocket computer. +It was also licensed to Nixdorf. + +Hardware notes: +- 3870 MCU (Motorola brand) @ 4MHz(2MHz internal) +- optional external ROM or RAM +- 4*Litronix DL 1414 (16*17segs total) +- 33-button keypad + +The CPU and memory is on the cartridge. In theory, any hardware configuration +is possible, but it looks like they always used a 3870. + +cartridge types known: +- CPU + 4/8KB ROM (ROM may be unpopulated) +- CPU + 2*4KB ROM +- CPU + 1KB battery-backed RAM (2*NEC D444) + +TODO: +- external rom access doesn't work ("german" locks up) +- external ram should be battery-backed + +******************************************************************************/ + +#include "emu.h" + +#include "bus/generic/carts.h" +#include "bus/generic/slot.h" +#include "cpu/f8/f8.h" +#include "machine/f3853.h" +#include "video/dl1416.h" + +// internal artwork +#include "lk3000.lh" + + +namespace { + +class lk3000_state : public driver_device +{ +public: + lk3000_state(const machine_config &mconfig, device_type type, const char *tag) : + driver_device(mconfig, type, tag), + m_maincpu(*this, "maincpu"), + m_dl1414(*this, "dl1414_%u", 0), + m_cart(*this, "cartslot"), + m_inputs(*this, "IN.%u", 0), + m_digits(*this, "digit%u", 0U) + { } + + void lk3000(machine_config &config); + + // CLR button is tied to MCU RESET pin + DECLARE_INPUT_CHANGED_MEMBER(reset_button) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? ASSERT_LINE : CLEAR_LINE); } + +protected: + virtual void machine_start() override; + +private: + // devices/pointers + required_device<cpu_device> m_maincpu; + required_device_array<dl1414_device, 4> m_dl1414; + required_device<generic_slot_device> m_cart; + required_ioport_array<8> m_inputs; + output_finder<16> m_digits; + + void main_map(address_map &map); + void main_io(address_map &map); + + DECLARE_DEVICE_IMAGE_LOAD_MEMBER(cart_load); + template <int N> void update_display(offs_t offset, u16 data); + + u8 p0_r(); + void p0_w(u8 data); + u8 p1_r(); + void p1_w(u8 data); + u8 p4_r(); + void p4_w(u8 data); + u8 p5_r(); + void p5_w(u8 data); + + u8 m_p0 = 0; + u8 m_p1 = 0; + u8 m_p4 = 0; + u8 m_p5 = 0; + + bool m_has_ram = false; + u8 m_ram[0x400]; +}; + +void lk3000_state::machine_start() +{ + m_digits.resolve(); + memset(m_ram, 0xff, 0x400); + + // register for savestates + save_item(NAME(m_p0)); + save_item(NAME(m_p1)); + save_item(NAME(m_p4)); + save_item(NAME(m_p5)); + save_item(NAME(m_has_ram)); + save_item(NAME(m_ram)); +} + + + +/****************************************************************************** + I/O +******************************************************************************/ + +// misc + +DEVICE_IMAGE_LOAD_MEMBER(lk3000_state::cart_load) +{ + u32 size = m_cart->common_get_size("rom"); + m_cart->rom_alloc(size, GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE); + m_cart->common_load_rom(m_cart->get_rom_base(), size, "rom"); + + // extra ram (optional) + m_has_ram = image.get_feature("ram") != nullptr; + + return image_init_result::PASS; +} + +template <int N> +void lk3000_state::update_display(offs_t offset, u16 data) +{ + m_digits[N * 4 + offset] = data; +} + + +// 3870 ports + +u8 lk3000_state::p0_r() +{ + return m_p0; +} + +void lk3000_state::p0_w(u8 data) +{ + m_p0 = data; +} + +u8 lk3000_state::p1_r() +{ + u8 data = m_p1; + + // P10-P13: multiplexed inputs + if (m_p4 & 0x10) + data |= m_inputs[~m_p4 & 7]->read(); + + // read rom data + if (m_p5 & 0x20) + { + // P00-P06: A0-A6, P50-P54: A7-A11, P07 selects chip + u16 offset = (m_p0 & 0x7f) | (m_p5 << 7 & 0xf80) | (m_p0 << 5 & 0x1000); + data |= m_cart->read_rom(offset + 0x800); + } + + // read ram data + if (m_has_ram && m_p4 & 0xc0) + { + u16 offset = (m_p0 & 0xff) | (m_p5 << 8 & 0x300); + data |= m_ram[offset]; + } + + return data; +} + +void lk3000_state::p1_w(u8 data) +{ + // P10-P15,_P15: DL1414 data + for (int i = 0; i < 4; i++) + m_dl1414[i]->data_w((~data & 0x3f) | (data << 1 & 0x40)); + + m_p1 = data; +} + +u8 lk3000_state::p4_r() +{ + return m_p4; +} + +void lk3000_state::p4_w(u8 data) +{ + // P40,P41: DL1414 address + for (int i = 0; i < 4; i++) + m_dl1414[i]->addr_w(~data & 3); + + // P42,P43,GND,P45: 7442 to DL1414 _WR + for (int i = 0; i < 4; i++) + m_dl1414[i]->wr_w(BIT(1 << (~data >> 2 & 0xb), i)); + + // P46: write ram data + if (m_has_ram && ~data & m_p4 & 0x40) + { + u16 offset = (m_p0 & 0xff) | (m_p5 << 8 & 0x300); + m_ram[offset] = m_p1; + } + + // P40,P41,P42,P44: 7442 to keypad mux + m_p4 = data; +} + +u8 lk3000_state::p5_r() +{ + return m_p5; +} + +void lk3000_state::p5_w(u8 data) +{ + m_p5 = data; +} + + + +/****************************************************************************** + Address Maps +******************************************************************************/ + +void lk3000_state::main_map(address_map &map) +{ + map.global_mask(0x7ff); + map(0x0000, 0x07ff).r("cartslot", FUNC(generic_slot_device::read_rom)); +} + +void lk3000_state::main_io(address_map &map) +{ + map(0x00, 0x00).rw(FUNC(lk3000_state::p0_r), FUNC(lk3000_state::p0_w)); + map(0x01, 0x01).rw(FUNC(lk3000_state::p1_r), FUNC(lk3000_state::p1_w)); + map(0x04, 0x07).rw("psu", FUNC(f38t56_device::read), FUNC(f38t56_device::write)); +} + + + +/****************************************************************************** + Input Ports +******************************************************************************/ + +static INPUT_PORTS_START( lk3000 ) + PORT_START("IN.0") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_NAME("A / MET") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_NAME("B / US") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_NAME("C / X>M") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_NAME("D / K") + + PORT_START("IN.1") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_NAME("J / C1") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_NAME("K / C2") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_NAME("L / RM") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_NAME("M / %") + + PORT_START("IN.2") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_NAME("S / EXC") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_NAME("T / +/-") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_NAME("U / M+") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CODE(KEYCODE_0) PORT_CODE(KEYCODE_0_PAD) PORT_NAME("V / 0") + + PORT_START("IN.3") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_7_PAD) PORT_CHAR('e') PORT_NAME("E / 7") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_8_PAD) PORT_CHAR('f') PORT_NAME("F / 8") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CODE(KEYCODE_9) PORT_CODE(KEYCODE_9_PAD) PORT_CHAR('g') PORT_NAME("G / 9") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CODE(KEYCODE_SLASH_PAD) PORT_CHAR('h') PORT_NAME(u8"H / ÷") + + PORT_START("IN.4") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CODE(KEYCODE_4) PORT_CODE(KEYCODE_4_PAD) PORT_CHAR('n') PORT_NAME("N / 4") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_5_PAD) PORT_CHAR('o') PORT_NAME("O / 5") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_6_PAD) PORT_CHAR('p') PORT_NAME("P / 6") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CODE(KEYCODE_PLUS_PAD) PORT_CHAR('q') PORT_NAME("Q / +") + + PORT_START("IN.5") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CODE(KEYCODE_1) PORT_CODE(KEYCODE_1_PAD) PORT_CHAR('w') PORT_NAME("W / 1") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CODE(KEYCODE_2) PORT_CODE(KEYCODE_2_PAD) PORT_CHAR('x') PORT_NAME("X / 2") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CODE(KEYCODE_3) PORT_CODE(KEYCODE_3_PAD) PORT_CHAR('y') PORT_NAME("Y / 3") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CODE(KEYCODE_STOP) PORT_CODE(KEYCODE_DEL_PAD) PORT_CHAR('z') PORT_NAME("Z / .") + + PORT_START("IN.6") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('?') PORT_NAME("? / P2") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_NAME("bs / P1") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CODE(KEYCODE_MINUS_PAD) PORT_CHAR('r') PORT_NAME("R / -") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CODE(KEYCODE_ASTERISK) PORT_CHAR('i') PORT_NAME(u8"I / ×") + + PORT_START("IN.7") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_NAME("def / P4") + PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_TAB) PORT_CHAR('\t') PORT_NAME("stp / P3") + PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CODE(KEYCODE_ENTER_PAD) PORT_CHAR(' ') PORT_NAME("sp / =") + PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_F1) PORT_CHAR(UCHAR_MAMEKEY(F1)) PORT_NAME("f") + + PORT_START("RESET") + PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD) PORT_CODE(KEYCODE_DEL) PORT_CHANGED_MEMBER(DEVICE_SELF, lk3000_state, reset_button, 0) PORT_CHAR(127) PORT_NAME("clr") +INPUT_PORTS_END + + + +/****************************************************************************** + Machine Configs +******************************************************************************/ + +void lk3000_state::lk3000(machine_config &config) +{ + // basic machine hardware + F8(config, m_maincpu, 4_MHz_XTAL/2); + m_maincpu->set_addrmap(AS_PROGRAM, &lk3000_state::main_map); + m_maincpu->set_addrmap(AS_IO, &lk3000_state::main_io); + m_maincpu->set_irq_acknowledge_callback("psu", FUNC(f38t56_device::int_acknowledge)); + + auto &psu(F38T56(config, "psu", 4_MHz_XTAL/2)); + psu.set_int_vector(0x20); + psu.int_req_callback().set_inputline("maincpu", F8_INPUT_LINE_INT_REQ); + psu.read_a().set(FUNC(lk3000_state::p4_r)); + psu.write_a().set(FUNC(lk3000_state::p4_w)); + psu.read_b().set(FUNC(lk3000_state::p5_r)); + psu.write_b().set(FUNC(lk3000_state::p5_w)); + + // video hardware + DL1414T(config, m_dl1414[0], u32(0)).update().set(FUNC(lk3000_state::update_display<0>)); + DL1414T(config, m_dl1414[1], u32(0)).update().set(FUNC(lk3000_state::update_display<1>)); + DL1414T(config, m_dl1414[2], u32(0)).update().set(FUNC(lk3000_state::update_display<2>)); + DL1414T(config, m_dl1414[3], u32(0)).update().set(FUNC(lk3000_state::update_display<3>)); + config.set_default_layout(layout_lk3000); + + // cartridge + GENERIC_CARTSLOT(config, m_cart, generic_plain_slot, "lk3000"); + m_cart->set_device_load(FUNC(lk3000_state::cart_load)); + m_cart->set_must_be_loaded(true); + + SOFTWARE_LIST(config, "cart_list").set_original("lk3000"); +} + + + +/****************************************************************************** + ROM Definitions +******************************************************************************/ + +ROM_START( lk3000 ) + ROM_REGION( 0x0800, "maincpu", ROMREGION_ERASE00 ) + // none here, it's in the module slot +ROM_END + +} // anonymous namespace + + + +/****************************************************************************** + Drivers +******************************************************************************/ + +// YEAR NAME PARENT COMP MACHINE INPUT STATE INIT COMPANY, FULLNAME, FLAGS +CONS( 1979, lk3000, 0, 0, lk3000, lk3000, lk3000_state, empty_init, "Lexicon", "LK-3000", MACHINE_NOT_WORKING | MACHINE_NO_SOUND_HW | MACHINE_SUPPORTS_SAVE ) |