// 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 "includes/lc80.h" #include "lc80.lh" /* Memory Maps */ static ADDRESS_MAP_START( lc80_mem, AS_PROGRAM, 8, lc80_state ) ADDRESS_MAP_GLOBAL_MASK(0x3fff) AM_RANGE(0x0000, 0x07ff) AM_ROMBANK("bank1") AM_RANGE(0x0800, 0x0fff) AM_ROMBANK("bank2") AM_RANGE(0x1000, 0x17ff) AM_ROMBANK("bank3") AM_RANGE(0x2000, 0x23ff) AM_RAM AM_RANGE(0x2400, 0x2fff) AM_RAMBANK("bank4") ADDRESS_MAP_END #if 0 static ADDRESS_MAP_START( sc80_mem, AS_PROGRAM, 8, lc80_state ) AM_IMPORT_FROM(lc80_mem) AM_RANGE(0xc000, 0xcfff) AM_ROM ADDRESS_MAP_END #endif static ADDRESS_MAP_START( lc80_io, AS_IO, 8, lc80_state ) ADDRESS_MAP_GLOBAL_MASK(0x1f) AM_RANGE(0xf4, 0xf7) AM_DEVREADWRITE(Z80PIO1_TAG, z80pio_device, read, write) AM_RANGE(0xf8, 0xfb) AM_DEVREADWRITE(Z80PIO2_TAG, z80pio_device, read, write) AM_RANGE(0xec, 0xef) AM_DEVREADWRITE(Z80CTC_TAG, z80ctc_device, read, write) ADDRESS_MAP_END /* 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() { int i; for (i = 0; i < 6; i++) { if (!BIT(m_digit, i)) output_set_digit_value(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 = BITSWAP8(~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 */ output_set_led_value(0, !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 data = 0xf0; int i; for (i = 0; i < 6; i++) { if (!BIT(m_digit, i)) { if (!BIT(m_y0->read(), i)) data &= ~0x10; if (!BIT(m_y1->read(), i)) data &= ~0x20; if (!BIT(m_y2->read(), i)) data &= ~0x40; if (!BIT(m_y3->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 }, { NULL } }; #endif /* Machine Initialization */ void lc80_state::machine_start() { address_space &program = m_maincpu->space(AS_PROGRAM); /* setup memory banking */ membank("bank1")->configure_entry(0, m_rom->base()); // TODO membank("bank1")->configure_entry(1, m_rom->base()); membank("bank1")->set_entry(1); membank("bank2")->configure_entry(0, m_rom->base() + 0x800); // TODO membank("bank2")->configure_entry(1, m_rom->base() + 0x800); membank("bank2")->set_entry(1); membank("bank3")->configure_entry(0, m_rom->base() + 0x1000); // TODO membank("bank3")->configure_entry(1, m_rom->base() + 0x1000); membank("bank3")->set_entry(1); membank("bank4")->configure_entry(0, m_rom->base() + 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; } /* register for state saving */ save_item(NAME(m_digit)); save_item(NAME(m_segment)); } /* Machine Driver */ static MACHINE_CONFIG_START( lc80, lc80_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, 900000) /* UD880D */ MCFG_CPU_PROGRAM_MAP(lc80_mem) MCFG_CPU_IO_MAP(lc80_io) /* video hardware */ MCFG_DEFAULT_LAYOUT( layout_lc80 ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) /* devices */ MCFG_DEVICE_ADD(Z80CTC_TAG, Z80CTC, 900000) MCFG_Z80CTC_INTR_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80CTC_ZC0_CB(WRITELINE(lc80_state, ctc_z0_w)) MCFG_Z80CTC_ZC1_CB(WRITELINE(lc80_state, ctc_z1_w)) MCFG_Z80CTC_ZC2_CB(WRITELINE(lc80_state, ctc_z2_w)) MCFG_DEVICE_ADD(Z80PIO1_TAG, Z80PIO, 900000) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80PIO_OUT_PA_CB(WRITE8(lc80_state, pio1_pa_w)) MCFG_Z80PIO_IN_PB_CB(READ8(lc80_state, pio1_pb_r)) MCFG_Z80PIO_OUT_PB_CB(WRITE8(lc80_state, pio1_pb_w)) MCFG_DEVICE_ADD(Z80PIO2_TAG, Z80PIO, 900000) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80PIO_IN_PB_CB(READ8(lc80_state, pio2_pb_r)) MCFG_CASSETTE_ADD("cassette") MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_MUTED) MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("1K") MCFG_RAM_EXTRA_OPTIONS("2K,3K,4K") MACHINE_CONFIG_END static MACHINE_CONFIG_START( lc80_2, lc80_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, 1800000) /* UD880D */ MCFG_CPU_PROGRAM_MAP(lc80_mem) MCFG_CPU_IO_MAP(lc80_io) /* video hardware */ MCFG_DEFAULT_LAYOUT( layout_lc80 ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD("speaker", SPEAKER_SOUND, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) /* devices */ MCFG_DEVICE_ADD(Z80CTC_TAG, Z80CTC, 900000) MCFG_Z80CTC_INTR_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80CTC_ZC0_CB(WRITELINE(lc80_state, ctc_z0_w)) MCFG_Z80CTC_ZC1_CB(WRITELINE(lc80_state, ctc_z1_w)) MCFG_Z80CTC_ZC2_CB(WRITELINE(lc80_state, ctc_z2_w)) MCFG_DEVICE_ADD(Z80PIO1_TAG, Z80PIO, 900000) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80PIO_OUT_PA_CB(WRITE8(lc80_state, pio1_pa_w)) MCFG_Z80PIO_IN_PB_CB(READ8(lc80_state, pio1_pb_r)) MCFG_Z80PIO_OUT_PB_CB(WRITE8(lc80_state, pio1_pb_w)) MCFG_DEVICE_ADD(Z80PIO2_TAG, Z80PIO, 900000) MCFG_Z80PIO_OUT_INT_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80PIO_IN_PB_CB(READ8(lc80_state, pio2_pb_r)) MCFG_CASSETTE_ADD("cassette") MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_MUTED) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("4K") MACHINE_CONFIG_END #if 0 static MACHINE_CONFIG_DERIVED( sc80, lc80_2 ) /* basic machine hardware */ MCFG_CPU_MODIFY(Z80_TAG) MCFG_CPU_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(1) ) ROMX_LOAD( "lc80.d203", 0x0800, 0x0400, CRC(2b544da1) SHA1(3a6cbd0c57c38eadb7055dca4b396c348567d1d5), ROM_BIOS(1) ) ROM_SYSTEM_BIOS( 1, "2716", "LC 80 (2716)" ) ROMX_LOAD( "lc80_2716.bin", 0x0000, 0x0800, CRC(b3025934) SHA1(6fff953f0f1eee829fd774366313ab7e8053468c), ROM_BIOS(2)) 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 INIT COMPANY FULLNAME FLAGS */ COMP( 1984, lc80, 0, 0, lc80, lc80, driver_device, 0, "VEB Mikroelektronik", "Lerncomputer LC 80", GAME_SUPPORTS_SAVE ) COMP( 1984, lc80_2, lc80, 0, lc80_2, lc80, driver_device, 0, "VEB Mikroelektronik", "Lerncomputer LC 80.2", GAME_SUPPORTS_SAVE ) COMP( 1984, sc80, lc80, 0, lc80_2, lc80, driver_device, 0, "VEB Mikroelektronik", "Schachcomputer SC-80", GAME_SUPPORTS_SAVE )