diff options
Diffstat (limited to 'src/mess/drivers/poly880.c')
-rw-r--r-- | src/mess/drivers/poly880.c | 311 |
1 files changed, 311 insertions, 0 deletions
diff --git a/src/mess/drivers/poly880.c b/src/mess/drivers/poly880.c new file mode 100644 index 00000000000..bb06e5c8fa9 --- /dev/null +++ b/src/mess/drivers/poly880.c @@ -0,0 +1,311 @@ +/*************************************************************************** + + 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) |