diff options
Diffstat (limited to 'src/mame/drivers/lc80.c')
-rw-r--r-- | src/mame/drivers/lc80.c | 441 |
1 files changed, 441 insertions, 0 deletions
diff --git a/src/mame/drivers/lc80.c b/src/mame/drivers/lc80.c new file mode 100644 index 00000000000..046bd69af0e --- /dev/null +++ b/src/mame/drivers/lc80.c @@ -0,0 +1,441 @@ +// 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); + + UINT8 *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; + } + + /* 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", MACHINE_SUPPORTS_SAVE ) +COMP( 1984, lc80_2, lc80, 0, lc80_2, lc80, driver_device, 0, "VEB Mikroelektronik", "Lerncomputer LC 80.2", MACHINE_SUPPORTS_SAVE ) +COMP( 1984, sc80, lc80, 0, lc80_2, lc80, driver_device, 0, "VEB Mikroelektronik", "Schachcomputer SC-80", MACHINE_SUPPORTS_SAVE ) |