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Diffstat (limited to 'src/mame/drivers/lc80.c')
-rw-r--r--src/mame/drivers/lc80.c441
1 files changed, 441 insertions, 0 deletions
diff --git a/src/mame/drivers/lc80.c b/src/mame/drivers/lc80.c
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+++ b/src/mame/drivers/lc80.c
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+// 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 )