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-rw-r--r--src/mess/drivers/poly880.c311
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diff --git a/src/mess/drivers/poly880.c b/src/mess/drivers/poly880.c
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+/***************************************************************************
+
+ Poly-Computer 880
+
+ 12/05/2009 Skeleton driver.
+
+ http://www.kc85-museum.de/books/poly880/index.html
+
+After starting this driver, the screen may be blank. Press F2 until
+something appears (most likely 'Go'). Then it can be used, or pasted to.
+
+To see it say POLY-880, start the system, press F2, F1, F2.
+
+Pasting:
+ 0-F : as is
+ EXEC : ^
+ BACK : V
+ MEM : -
+ GO : X
+
+Test Paste:
+ -4000^11^22^33^44^55^66^77^88^99^-4000
+ Now press up-arrow to confirm the data has been entered.
+
+****************************************************************************/
+
+#include "includes/poly880.h"
+#include "poly880.lh"
+
+/*
+
+ TODO:
+
+ - SEND/SCON
+ - MCYCL (activate single stepping)
+ - CYCL (single step)
+ - layout LEDs (address bus, data bus, command bus, MCYCL)
+ - RAM expansion
+
+*/
+
+/* Read/Write Handlers */
+
+void poly880_state::update_display()
+{
+ int i;
+
+ for (i = 0; i < 8; i++)
+ {
+ if (BIT(m_digit, i)) output_set_digit_value(7 - i, m_segment);
+ }
+}
+
+WRITE8_MEMBER( poly880_state::cldig_w )
+{
+ m_digit = data;
+
+ update_display();
+}
+
+/* Memory Maps */
+
+static ADDRESS_MAP_START( poly880_mem, AS_PROGRAM, 8, poly880_state )
+ AM_RANGE(0x0000, 0x03ff) AM_MIRROR(0x0c00) AM_ROM
+ AM_RANGE(0x1000, 0x13ff) AM_MIRROR(0x0c00) AM_ROM
+ AM_RANGE(0x2000, 0x23ff) AM_MIRROR(0x0c00) AM_ROM
+ AM_RANGE(0x3000, 0x33ff) AM_MIRROR(0x0c00) AM_ROM
+ AM_RANGE(0x4000, 0x43ff) AM_MIRROR(0x3c00) AM_RAM
+ AM_RANGE(0x8000, 0xffff) AM_RAMBANK("bank1")
+ADDRESS_MAP_END
+
+static ADDRESS_MAP_START( poly880_io, AS_IO, 8, poly880_state )
+ ADDRESS_MAP_GLOBAL_MASK(0xaf)
+ AM_RANGE(0x80, 0x83) AM_DEVREADWRITE(Z80PIO1_TAG, z80pio_device, read_alt, write_alt)
+ AM_RANGE(0x84, 0x87) AM_DEVREADWRITE(Z80PIO2_TAG, z80pio_device, read_alt, write_alt)
+ AM_RANGE(0x88, 0x8b) AM_DEVREADWRITE(Z80CTC_TAG, z80ctc_device, read, write)
+ AM_RANGE(0xa0, 0xa0) AM_MIRROR(0x0f) AM_WRITE(cldig_w)
+ADDRESS_MAP_END
+
+/* Input Ports */
+
+INPUT_CHANGED_MEMBER( poly880_state::trigger_reset )
+{
+ m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? CLEAR_LINE : ASSERT_LINE);
+}
+
+INPUT_CHANGED_MEMBER( poly880_state::trigger_nmi )
+{
+ m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE);
+}
+
+static INPUT_PORTS_START( poly880 )
+ PORT_START("KI1")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("GO") PORT_CODE(KEYCODE_G) PORT_CODE(KEYCODE_X) PORT_CHAR('X')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_UNUSED )
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("EXEC") PORT_CODE(KEYCODE_ENTER) PORT_CODE(KEYCODE_UP) PORT_CHAR('^')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("BACK") PORT_CODE(KEYCODE_BACKSPACE) PORT_CODE(KEYCODE_DOWN) PORT_CHAR('V')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("REG") PORT_CODE(KEYCODE_R) PORT_CHAR('R')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("FCT") PORT_CODE(KEYCODE_T)
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("STEP") PORT_CODE(KEYCODE_S)
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("MEM") PORT_CODE(KEYCODE_M) PORT_CHAR('-')
+
+ PORT_START("KI2")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2')
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3')
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A')
+
+ PORT_START("KI3")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4')
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6')
+ 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_5) PORT_CHAR('5')
+ PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C')
+ PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D')
+ PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F')
+ PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E')
+
+ PORT_START("SPECIAL")
+ PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RES") PORT_CODE(KEYCODE_F1) PORT_CHANGED_MEMBER(DEVICE_SELF, poly880_state, trigger_reset, 0)
+ PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("MON") PORT_CODE(KEYCODE_F2) PORT_CHANGED_MEMBER(DEVICE_SELF, poly880_state, trigger_nmi, 0)
+ PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("MCYCL") PORT_CODE(KEYCODE_F3)
+ PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("CYCL") PORT_CODE(KEYCODE_F4)
+INPUT_PORTS_END
+
+/* Z80-CTC Interface */
+
+WRITE_LINE_MEMBER( poly880_state::ctc_z0_w )
+{
+ // SEND
+}
+
+WRITE_LINE_MEMBER( poly880_state::ctc_z1_w )
+{
+}
+
+static Z80CTC_INTERFACE( ctc_intf )
+{
+ DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* interrupt handler */
+ DEVCB_DRIVER_LINE_MEMBER(poly880_state, ctc_z0_w), /* ZC/TO0 callback */
+ DEVCB_DRIVER_LINE_MEMBER(poly880_state, ctc_z1_w), /* ZC/TO1 callback */
+ DEVCB_DEVICE_LINE_MEMBER(DEVICE_SELF,z80ctc_device, trg3) /* ZC/TO2 callback */
+};
+
+/* Z80-PIO Interface */
+
+WRITE8_MEMBER( poly880_state::pio1_pa_w )
+{
+ /*
+
+ bit signal description
+
+ PA0 SD0 segment E
+ PA1 SD1 segment D
+ PA2 SD2 segment C
+ PA3 SD3 segment P
+ PA4 SD4 segment G
+ PA5 SD5 segment A
+ PA6 SD6 segment F
+ PA7 SD7 segment B
+
+ */
+
+ m_segment = BITSWAP8(data, 3, 4, 6, 0, 1, 2, 7, 5);
+
+ update_display();
+}
+
+READ8_MEMBER( poly880_state::pio1_pb_r )
+{
+ /*
+
+ bit signal description
+
+ PB0 TTY
+ PB1 MIN tape input
+ PB2 MOUT tape output
+ PB3
+ PB4 KI1 key row 1 input
+ PB5 KI2 key row 2 input
+ PB6 SCON
+ PB7 KI3 key row 3 input
+
+ */
+
+ UINT8 data = 0xf0 | (((m_cassette)->input() < +0.0) << 1);
+ int i;
+
+ for (i = 0; i < 8; i++)
+ {
+ if (BIT(m_digit, i))
+ {
+ if (!BIT(ioport("KI1")->read(), i)) data &= ~0x10;
+ if (!BIT(ioport("KI2")->read(), i)) data &= ~0x20;
+ if (!BIT(ioport("KI3")->read(), i)) data &= ~0x80;
+ }
+ }
+
+ return data;
+}
+
+WRITE8_MEMBER( poly880_state::pio1_pb_w )
+{
+ /*
+
+ bit signal description
+
+ PB0 TTY teletype serial output
+ PB1 MIN
+ PB2 MOUT tape output
+ PB3
+ PB4 KI1 key row 1 input
+ PB5 KI2 key row 2 input
+ PB6 SCON
+ PB7 KI3 key row 3 input
+
+ */
+
+ /* tape output */
+ m_cassette->output( BIT(data, 2) ? +1.0 : -1.0);
+}
+
+static Z80PIO_INTERFACE( pio1_intf )
+{
+ DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */
+ DEVCB_NULL, /* port A read callback */
+ DEVCB_DRIVER_MEMBER(poly880_state, pio1_pa_w), /* port A write callback */
+ DEVCB_NULL, /* portA ready active callback */
+ DEVCB_DRIVER_MEMBER(poly880_state, pio1_pb_r), /* port B read callback */
+ DEVCB_DRIVER_MEMBER(poly880_state, pio1_pb_w), /* port B write callback */
+ DEVCB_NULL /* portB ready active callback */
+};
+
+static Z80PIO_INTERFACE( pio2_intf )
+{
+ DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0), /* callback when change interrupt status */
+ DEVCB_NULL, /* port A read callback */
+ DEVCB_NULL, /* port A write callback */
+ DEVCB_NULL, /* portA ready active callback */
+ DEVCB_NULL, /* port B read callback */
+ DEVCB_NULL, /* port B write callback */
+ DEVCB_NULL /* portB ready active callback */
+};
+
+/* Z80 Daisy Chain */
+
+static const z80_daisy_config poly880_daisy_chain[] =
+{
+ { Z80PIO1_TAG },
+ { Z80PIO2_TAG },
+ { Z80CTC_TAG },
+ { NULL }
+};
+
+/* Machine Initialization */
+
+void poly880_state::machine_start()
+{
+ /* register for state saving */
+ save_item(NAME(m_digit));
+ save_item(NAME(m_segment));
+}
+
+/* Machine Driver */
+
+static const cassette_interface poly880_cassette_interface =
+{
+ cassette_default_formats,
+ NULL,
+ (cassette_state)(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_MUTED),
+ NULL,
+ NULL
+};
+
+static MACHINE_CONFIG_START( poly880, poly880_state )
+ /* basic machine hardware */
+ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_7_3728MHz/8)
+ MCFG_CPU_PROGRAM_MAP(poly880_mem)
+ MCFG_CPU_IO_MAP(poly880_io)
+
+ /* video hardware */
+ MCFG_DEFAULT_LAYOUT( layout_poly880 )
+
+ /* devices */
+ MCFG_Z80CTC_ADD(Z80CTC_TAG, XTAL_7_3728MHz/16, ctc_intf)
+ MCFG_Z80PIO_ADD(Z80PIO1_TAG, XTAL_7_3728MHz/16, pio1_intf)
+ MCFG_Z80PIO_ADD(Z80PIO2_TAG, XTAL_7_3728MHz/16, pio2_intf)
+
+ MCFG_CASSETTE_ADD(CASSETTE_TAG, poly880_cassette_interface)
+
+ /* internal ram */
+ MCFG_RAM_ADD(RAM_TAG)
+ MCFG_RAM_DEFAULT_SIZE("1K")
+MACHINE_CONFIG_END
+
+/* ROMs */
+
+ROM_START( poly880 )
+ ROM_REGION( 0x10000, Z80_TAG, 0 )
+ ROM_LOAD( "poly880.i5", 0x0000, 0x0400, CRC(b1c571e8) SHA1(85bfe53d39d6690e79999a1e1240789497e72db0) )
+ ROM_LOAD( "poly880.i6", 0x1000, 0x0400, CRC(9efddf5b) SHA1(6ffa2f80b2c6f8ec9e22834f739c82f9754272b8) )
+ROM_END
+
+/* System Drivers */
+
+/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
+COMP( 1983, poly880, 0, 0, poly880, poly880, driver_device, 0, "VEB Polytechnik", "Poly-Computer 880", GAME_SUPPORTS_SAVE | GAME_NO_SOUND_HW)