// license:BSD-3-Clause // copyright-holders:Curt Coder /*************************************************************************** LC-80 12/05/2009 Skeleton driver. When first started, the screen is blank. Wait about 8 seconds for it to introduce itself, then you may use it or paste to it. The decimal points indicate which side of the display you will be updating. Pasting: 0-F : as is + (inc) : ^ - (dec) : V ADR : - DAT : = GO : X Test Paste: (lc80_2 only) -2000=11^22^33^44^55^66^77^88^99^-2000 Now press up-arrow to confirm the data has been entered. ToDo: - Most characters are lost when pasting (lc80, sc80). ****************************************************************************/ /* TODO: - HALT led - KSD11 switch - banking for ROM 4-5 - Schachcomputer SC-80 - CTC clock inputs */ #include "emu.h" #include "includes/lc80.h" #include "speaker.h" #include "lc80.lh" /* Memory Maps */ void lc80_state::lc80_mem(address_map &map) { map.global_mask(0x3fff); map(0x0000, 0x07ff).bankr("bank1"); map(0x0800, 0x0fff).bankr("bank2"); map(0x1000, 0x17ff).bankr("bank3"); map(0x2000, 0x23ff).ram(); map(0x2400, 0x2fff).bankrw("bank4"); } #if 0 void lc80_state::sc80_mem(address_map &map) { lc80_mem(map); map(0xc000, 0xcfff).rom(); } #endif void lc80_state::lc80_io(address_map &map) { map.global_mask(0x1f); map(0x14, 0x17).rw(Z80PIO1_TAG, FUNC(z80pio_device::read), FUNC(z80pio_device::write)); map(0x18, 0x1b).rw(m_pio2, FUNC(z80pio_device::read), FUNC(z80pio_device::write)); map(0x0c, 0x0f).rw(Z80CTC_TAG, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); } /* Input Ports */ INPUT_CHANGED_MEMBER( lc80_state::trigger_reset ) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? CLEAR_LINE : ASSERT_LINE); } INPUT_CHANGED_MEMBER( lc80_state::trigger_nmi ) { m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE); } static INPUT_PORTS_START( lc80 ) PORT_START("Y0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("-") PORT_CODE(KEYCODE_DOWN) PORT_CHAR('V') PORT_START("Y1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("LD") PORT_CODE(KEYCODE_L) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("+") PORT_CODE(KEYCODE_UP) PORT_CHAR('^') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_START("Y2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ST") PORT_CODE(KEYCODE_S) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("DAT") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('=') PORT_START("Y3") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("EX") PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("ADR") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_START("SPECIAL") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RES") PORT_CODE(KEYCODE_F10) PORT_CHANGED_MEMBER(DEVICE_SELF, lc80_state, trigger_reset, 0) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("NMI") PORT_CODE(KEYCODE_ESC) PORT_CHANGED_MEMBER(DEVICE_SELF, lc80_state, trigger_nmi, 0) INPUT_PORTS_END /* Z80-CTC Interface */ WRITE_LINE_MEMBER( lc80_state::ctc_z0_w ) { } WRITE_LINE_MEMBER( lc80_state::ctc_z1_w ) { } WRITE_LINE_MEMBER( lc80_state::ctc_z2_w ) { } /* Z80-PIO Interface */ void lc80_state::update_display() { for (int i = 0; i < 6; i++) { if (!BIT(m_digit, i)) m_digits[5 - i] = m_segment; } } WRITE8_MEMBER( lc80_state::pio1_pa_w ) { /* bit description PA0 VQE23 segment B PA1 VQE23 segment F PA2 VQE23 segment A PA3 VQE23 segment G PA4 VQE23 segment DP PA5 VQE23 segment C PA6 VQE23 segment E PA7 VQE23 segment D */ m_segment = bitswap<8>(~data, 4, 3, 1, 6, 7, 5, 0, 2); update_display(); } READ8_MEMBER( lc80_state::pio1_pb_r ) { /* bit description PB0 tape input PB1 tape output PB2 digit 0 PB3 digit 1 PB4 digit 2 PB5 digit 3 PB6 digit 4 PB7 digit 5 */ return (m_cassette->input() < +0.0); } WRITE8_MEMBER( lc80_state::pio1_pb_w ) { /* bit description PB0 tape input PB1 tape output, speaker output, OUT led PB2 digit 0 PB3 digit 1 PB4 digit 2 PB5 digit 3 PB6 digit 4 PB7 digit 5 */ /* tape output */ m_cassette->output( BIT(data, 1) ? +1.0 : -1.0); /* speaker */ m_speaker->level_w(!BIT(data, 1)); /* OUT led */ m_out_led = !BIT(data, 1); /* keyboard */ m_digit = data >> 2; /* display */ update_display(); } READ8_MEMBER( lc80_state::pio2_pb_r ) { /* bit description PB0 PB1 PB2 PB3 PB4 key row 0 PB5 key row 1 PB6 key row 2 PB7 key row 3 */ uint8_t data = 0xf0; int i; for (i = 0; i < 6; i++) { if (!BIT(m_digit, i)) { if (!BIT(m_y[0]->read(), i)) data &= ~0x10; if (!BIT(m_y[1]->read(), i)) data &= ~0x20; if (!BIT(m_y[2]->read(), i)) data &= ~0x40; if (!BIT(m_y[3]->read(), i)) data &= ~0x80; } } return data; } #if 0 /* Z80 Daisy Chain */ static const z80_daisy_config lc80_daisy_chain[] = { { Z80CTC_TAG }, { Z80PIO2_TAG }, { Z80PIO1_TAG }, { nullptr } }; #endif /* Machine Initialization */ void lc80_state::machine_start() { address_space &program = m_maincpu->space(AS_PROGRAM); uint8_t *ROM = memregion(Z80_TAG)->base(); /* setup memory banking */ membank("bank1")->configure_entry(0, &ROM[0]); // TODO membank("bank1")->configure_entry(1, &ROM[0]); membank("bank1")->set_entry(1); membank("bank2")->configure_entry(0, &ROM[0x800]); // TODO membank("bank2")->configure_entry(1, &ROM[0x800]); membank("bank2")->set_entry(1); membank("bank3")->configure_entry(0, &ROM[0x1000]); // TODO membank("bank3")->configure_entry(1, &ROM[0x1000]); membank("bank3")->set_entry(1); membank("bank4")->configure_entry(0, &ROM[0x2000]); membank("bank4")->set_entry(0); program.install_readwrite_bank(0x0000, 0x07ff, "bank1"); program.install_readwrite_bank(0x0800, 0x0fff, "bank2"); program.install_readwrite_bank(0x1000, 0x17ff, "bank3"); switch (m_ram->size()) { case 1*1024: program.install_readwrite_bank(0x2000, 0x23ff, "bank4"); program.unmap_readwrite(0x2400, 0x2fff); break; case 2*1024: program.install_readwrite_bank(0x2000, 0x27ff, "bank4"); program.unmap_readwrite(0x2800, 0x2fff); break; case 3*1024: program.install_readwrite_bank(0x2000, 0x2bff, "bank4"); program.unmap_readwrite(0x2c00, 0x2fff); break; case 4*1024: program.install_readwrite_bank(0x2000, 0x2fff, "bank4"); break; } m_digits.resolve(); m_out_led.resolve(); /* register for state saving */ save_item(NAME(m_digit)); save_item(NAME(m_segment)); } /* Machine Driver */ MACHINE_CONFIG_START(lc80_state::lc80) /* basic machine hardware */ MCFG_DEVICE_ADD(Z80_TAG, Z80, 900000) /* UD880D */ MCFG_DEVICE_PROGRAM_MAP(lc80_mem) MCFG_DEVICE_IO_MAP(lc80_io) /* video hardware */ config.set_default_layout(layout_lc80); /* sound hardware */ SPEAKER(config, "mono").front_center(); MCFG_DEVICE_ADD("speaker", SPEAKER_SOUND) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) /* devices */ z80ctc_device& ctc(Z80CTC(config, Z80CTC_TAG, 900000)); ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); ctc.zc_callback<0>().set(FUNC(lc80_state::ctc_z0_w)); ctc.zc_callback<1>().set(FUNC(lc80_state::ctc_z1_w)); ctc.zc_callback<2>().set(FUNC(lc80_state::ctc_z2_w)); z80pio_device& pio1(Z80PIO(config, Z80PIO1_TAG, 900000)); pio1.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); pio1.out_pa_callback().set(FUNC(lc80_state::pio1_pa_w)); pio1.in_pb_callback().set(FUNC(lc80_state::pio1_pb_r)); pio1.out_pb_callback().set(FUNC(lc80_state::pio1_pb_w)); Z80PIO(config, m_pio2, 900000); m_pio2->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); m_pio2->in_pb_callback().set(FUNC(lc80_state::pio2_pb_r)); MCFG_CASSETTE_ADD("cassette") MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_MUTED) RAM(config, RAM_TAG).set_default_size("1K").set_extra_options("2K,3K,4K"); MACHINE_CONFIG_END MACHINE_CONFIG_START(lc80_state::lc80_2) /* basic machine hardware */ MCFG_DEVICE_ADD(Z80_TAG, Z80, 1800000) /* UD880D */ MCFG_DEVICE_PROGRAM_MAP(lc80_mem) MCFG_DEVICE_IO_MAP(lc80_io) /* video hardware */ config.set_default_layout(layout_lc80); /* sound hardware */ SPEAKER(config, "mono").front_center(); MCFG_DEVICE_ADD("speaker", SPEAKER_SOUND) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) /* devices */ z80ctc_device& ctc(Z80CTC(config, Z80CTC_TAG, 900000)); ctc.intr_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); ctc.zc_callback<0>().set(FUNC(lc80_state::ctc_z0_w)); ctc.zc_callback<1>().set(FUNC(lc80_state::ctc_z1_w)); ctc.zc_callback<2>().set(FUNC(lc80_state::ctc_z2_w)); z80pio_device& pio1(Z80PIO(config, Z80PIO1_TAG, 900000)); pio1.out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); pio1.out_pa_callback().set(FUNC(lc80_state::pio1_pa_w)); pio1.in_pb_callback().set(FUNC(lc80_state::pio1_pb_r)); pio1.out_pb_callback().set(FUNC(lc80_state::pio1_pb_w)); Z80PIO(config, m_pio2, 900000); m_pio2->out_int_callback().set_inputline(m_maincpu, INPUT_LINE_IRQ0); m_pio2->in_pb_callback().set(FUNC(lc80_state::pio2_pb_r)); MCFG_CASSETTE_ADD("cassette") MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_MUTED) /* internal ram */ RAM(config, RAM_TAG).set_default_size("4K"); MACHINE_CONFIG_END #if 0 static MACHINE_CONFIG_START( sc80 ) lc80_2(config); /* basic machine hardware */ MCFG_DEVICE_MODIFY(Z80_TAG) MCFG_DEVICE_PROGRAM_MAP(sc80_mem) MACHINE_CONFIG_END #endif /* ROMs */ ROM_START( lc80 ) ROM_REGION( 0x10000, Z80_TAG, 0 ) ROM_SYSTEM_BIOS( 0, "u505", "LC 80 (2x U505)" ) ROMX_LOAD( "lc80.d202", 0x0000, 0x0400, CRC(e754ef53) SHA1(044440b13e62addbc3f6a77369cfd16f99b39752), ROM_BIOS(0) ) ROMX_LOAD( "lc80.d203", 0x0800, 0x0400, CRC(2b544da1) SHA1(3a6cbd0c57c38eadb7055dca4b396c348567d1d5), ROM_BIOS(0) ) ROM_SYSTEM_BIOS( 1, "2716", "LC 80 (2716)" ) ROMX_LOAD( "lc80_2716.bin", 0x0000, 0x0800, CRC(b3025934) SHA1(6fff953f0f1eee829fd774366313ab7e8053468c), ROM_BIOS(1)) ROM_END ROM_START( lc80_2 ) ROM_REGION( 0x10000, Z80_TAG, 0 ) ROM_LOAD( "lc80_2.bin", 0x0000, 0x1000, CRC(2e06d768) SHA1(d9cddaf847831e4ab21854c0f895348b7fda20b8) ) ROM_END ROM_START( sc80 ) ROM_REGION( 0x10000, Z80_TAG, 0 ) ROM_LOAD( "lc80e-0000-schach.rom", 0x0000, 0x1000, CRC(e3cca61d) SHA1(f2be3f2a9d3780d59657e49b3abeffb0fc13db89) ) ROM_LOAD( "lc80e-1000-schach.rom", 0x1000, 0x1000, CRC(b0323160) SHA1(0ea019b0944736ae5b842bf9aa3537300f259b98) ) ROM_LOAD( "lc80e-c000-schach.rom", 0xc000, 0x1000, CRC(9c858d9c) SHA1(2f7b3fd046c965185606253f6cd9372da289ca6f) ) ROM_END /* System Drivers */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1984, lc80, 0, 0, lc80, lc80, lc80_state, empty_init, "VEB Mikroelektronik", "Lerncomputer LC 80", MACHINE_SUPPORTS_SAVE ) COMP( 1984, lc80_2, lc80, 0, lc80_2, lc80, lc80_state, empty_init, "VEB Mikroelektronik", "Lerncomputer LC 80.2", MACHINE_SUPPORTS_SAVE ) COMP( 1984, sc80, lc80, 0, lc80_2, lc80, lc80_state, empty_init, "VEB Mikroelektronik", "Schachcomputer SC-80", MACHINE_SUPPORTS_SAVE )