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mame/src/mess/drivers/poly880.c
Curt Coder fc33a3716e (MESS) Tagmap lookup cleanup. (nw)
2013-01-28 15:00:44 +00:00

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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(m_ki1->read(), i)) data &= ~0x10;
if (!BIT(m_ki2->read(), i)) data &= ~0x20;
if (!BIT(m_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)
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