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|
/***************************************************************************
Jupiter Ace memory map
CPU: Z80
0000-1fff ROM
2000-23ff Mirror of 2400-27FF
2400-27ff RAM (1K RAM used for screen and edit/cassette buffer)
2800-2bff Mirror of 2C00-2FFF
2c00-2fff RAM (1K RAM for char set, write only)
3000-3bff Mirror of 3C00-3FFF
3c00-3fff RAM (1K RAM standard)
4000-7fff RAM (16K Expansion)
8000-ffff RAM (48K Expansion)
Interrupts:
IRQ:
50Hz vertical sync
Ports:
Out 0xfe:
Tape and buzzer
In 0xfe:
Keyboard input, tape, and buzzer
http://www.jupiter-ace.co.uk/
***************************************************************************/
/*
TODO:
- Ace Colour Board
- 96K ram expansion
- Deep Thought disc interface (6850, 6821)
*/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "formats/ace_ace.h"
#include "formats/ace_tap.h"
#include "imagedev/cassette.h"
#include "imagedev/snapquik.h"
#include "machine/ctronics.h"
#include "machine/i8255.h"
#include "machine/ram.h"
#include "machine/z80pio.h"
#include "sound/ay8910.h"
#include "sound/sp0256.h"
#include "sound/speaker.h"
#include "sound/wave.h"
#include "includes/ace.h"
//**************************************************************************
// READ/WRITE HANDLERS
//**************************************************************************
//-------------------------------------------------
// io_r -
//-------------------------------------------------
READ8_MEMBER( ace_state::io_r )
{
UINT8 data = 0xff;
if (!BIT(offset, 8)) data &= ioport("A8")->read();
if (!BIT(offset, 9)) data &= ioport("A9")->read();
if (!BIT(offset, 10)) data &= ioport("A10")->read();
if (!BIT(offset, 11)) data &= ioport("A11")->read();
if (!BIT(offset, 12)) data &= ioport("A12")->read();
if (!BIT(offset, 13)) data &= ioport("A13")->read();
if (!BIT(offset, 14)) data &= ioport("A14")->read();
if (!BIT(offset, 15))
{
data &= ioport("A15")->read();
m_cassette->output(-1);
speaker_level_w(m_speaker, 0);
}
if (m_cassette->input() > 0)
{
data &= ~0x20;
}
return data;
}
//-------------------------------------------------
// io_w -
//-------------------------------------------------
WRITE8_MEMBER( ace_state::io_w )
{
m_cassette->output(1);
speaker_level_w(m_speaker, 1);
}
//-------------------------------------------------
// ppi_r -
//-------------------------------------------------
READ8_MEMBER( ace_state::ppi_pa_r )
{
return m_ppi->read(space, 0);
}
READ8_MEMBER( ace_state::ppi_pb_r )
{
return m_ppi->read(space, 1);
}
READ8_MEMBER( ace_state::ppi_pc_r )
{
return m_ppi->read(space, 2);
}
READ8_MEMBER( ace_state::ppi_control_r )
{
return m_ppi->read(space, 3);
}
//-------------------------------------------------
// ppi_w -
//-------------------------------------------------
WRITE8_MEMBER( ace_state::ppi_pa_w )
{
m_ppi->write(space, 0, data);
}
WRITE8_MEMBER( ace_state::ppi_pb_w )
{
m_ppi->write(space, 1, data);
}
WRITE8_MEMBER( ace_state::ppi_pc_w )
{
m_ppi->write(space, 2, data);
}
WRITE8_MEMBER( ace_state::ppi_control_w )
{
m_ppi->write(space, 3, data);
}
//-------------------------------------------------
// pio_r -
//-------------------------------------------------
READ8_MEMBER(ace_state::pio_ad_r)
{
device_t *device = machine().device(Z80PIO_TAG);
return dynamic_cast<z80pio_device*>(device)->data_read(0);
}
READ8_MEMBER(ace_state::pio_bd_r)
{
device_t *device = machine().device(Z80PIO_TAG);
return dynamic_cast<z80pio_device*>(device)->data_read(1);
}
READ8_MEMBER(ace_state::pio_ac_r)
{
device_t *device = machine().device(Z80PIO_TAG);
return dynamic_cast<z80pio_device*>(device)->control_read();
}
READ8_MEMBER(ace_state::pio_bc_r)
{
device_t *device = machine().device(Z80PIO_TAG);
return dynamic_cast<z80pio_device*>(device)->control_read();
}
//-------------------------------------------------
// pio_w -
//-------------------------------------------------
WRITE8_MEMBER(ace_state::pio_ad_w)
{
device_t *device = machine().device(Z80PIO_TAG);
dynamic_cast<z80pio_device*>(device)->data_write(0, data);
}
WRITE8_MEMBER(ace_state::pio_bd_w)
{
device_t *device = machine().device(Z80PIO_TAG);
dynamic_cast<z80pio_device*>(device)->data_write(1, data);
}
WRITE8_MEMBER(ace_state::pio_ac_w)
{
device_t *device = machine().device(Z80PIO_TAG);
dynamic_cast<z80pio_device*>(device)->control_write(0, data);
}
WRITE8_MEMBER(ace_state::pio_bc_w)
{
device_t *device = machine().device(Z80PIO_TAG);
dynamic_cast<z80pio_device*>(device)->control_write(1, data);
}
//**************************************************************************
// ADDRESS MAPS
//**************************************************************************
//-------------------------------------------------
// ADDRESS_MAP( ace_mem )
//-------------------------------------------------
static ADDRESS_MAP_START( ace_mem, AS_PROGRAM, 8, ace_state )
AM_RANGE(0x0000, 0x1fff) AM_ROM
AM_RANGE(0x2000, 0x23ff) AM_MIRROR(0x0400) AM_RAM AM_SHARE("video_ram")
AM_RANGE(0x2800, 0x2bff) AM_MIRROR(0x0400) AM_RAM AM_SHARE("char_ram") AM_REGION(Z80_TAG, 0xfc00)
AM_RANGE(0x3000, 0x33ff) AM_MIRROR(0x0c00) AM_RAM
AM_RANGE(0x4000, 0xffff) AM_RAM
ADDRESS_MAP_END
//-------------------------------------------------
// ADDRESS_MAP( ace_io )
//-------------------------------------------------
static ADDRESS_MAP_START( ace_io, AS_IO, 8, ace_state )
AM_RANGE(0x00, 0x00) AM_MIRROR(0xfffe) AM_MASK(0xff00) AM_READWRITE(io_r, io_w)
AM_RANGE(0x01, 0x01) AM_MIRROR(0xff00) AM_READ_PORT("JOY")
AM_RANGE(0x41, 0x41) AM_MIRROR(0xff80) AM_READWRITE(ppi_pa_r, ppi_pa_w)
AM_RANGE(0x43, 0x43) AM_MIRROR(0xff80) AM_READWRITE(ppi_pb_r, ppi_pb_w)
AM_RANGE(0x45, 0x45) AM_MIRROR(0xff80) AM_READWRITE(ppi_pc_r, ppi_pc_w)
AM_RANGE(0x47, 0x47) AM_MIRROR(0xff80) AM_READWRITE(ppi_control_r, ppi_control_w)
AM_RANGE(0x81, 0x81) AM_MIRROR(0xff38) AM_READWRITE(pio_ad_r, pio_ad_w)
AM_RANGE(0x83, 0x83) AM_MIRROR(0xff38) AM_READWRITE(pio_bd_r, pio_bd_w)
AM_RANGE(0x85, 0x85) AM_MIRROR(0xff38) AM_READWRITE(pio_ac_r, pio_ac_w)
AM_RANGE(0x87, 0x87) AM_MIRROR(0xff38) AM_READWRITE(pio_bc_r, pio_bc_w)
AM_RANGE(0xfd, 0xfd) AM_MIRROR(0xff00) AM_DEVWRITE_LEGACY(AY8910_TAG, ay8910_address_w)
AM_RANGE(0xff, 0xff) AM_MIRROR(0xff00) AM_DEVREADWRITE_LEGACY(AY8910_TAG, ay8910_r, ay8910_data_w)
ADDRESS_MAP_END
//**************************************************************************
// INPUT PORTS
//**************************************************************************
//-------------------------------------------------
// INPUT_PORTS( ace )
//-------------------------------------------------
static INPUT_PORTS_START( ace )
PORT_START("A8")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("Symbol Shift") PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_2)
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_CHAR(':')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR('\xA3')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_CHAR('?')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A9")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_CHAR('~')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_CHAR('|')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_CHAR('\\')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR('{')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR('}')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A10")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR('<')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR('>')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A11")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('@')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_5) PORT_CODE(KEYCODE_LEFT) PORT_CHAR('5') PORT_CHAR('%')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A12")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_CHAR('_')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_8) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR('8') PORT_CHAR('(')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_7) PORT_CODE(KEYCODE_DOWN) PORT_CHAR('7') PORT_CHAR('\'')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_6) PORT_CODE(KEYCODE_UP) PORT_CHAR('6') PORT_CHAR('&')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A13")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_CHAR('"')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_CHAR(';')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_CHAR(0x00A9)
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_CHAR(']')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_CHAR('[')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A14")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR('=')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_CHAR('+')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_CHAR('-')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("h H \xE2\x86\x91") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("A15")
PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_CHAR('.')
PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_CHAR(',')
PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_CHAR('*')
PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_CHAR('/')
PORT_BIT( 0xe0, IP_ACTIVE_LOW, IPT_UNUSED )
PORT_START("JOY")
PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP )
PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN )
PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT )
PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT )
PORT_BIT( 0x10, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x20, IP_ACTIVE_HIGH, IPT_BUTTON1 )
PORT_BIT( 0x40, IP_ACTIVE_HIGH, IPT_UNUSED )
PORT_BIT( 0x80, IP_ACTIVE_HIGH, IPT_UNUSED )
INPUT_PORTS_END
//**************************************************************************
// VIDEO
//**************************************************************************
//-------------------------------------------------
// gfx_layout ace_charlayout
//-------------------------------------------------
static const gfx_layout ace_charlayout =
{
8,8,
128,
1,
{ RGN_FRAC(0,1) },
{ STEP8(0,1) },
{ STEP8(0,8) },
8*8
};
//-------------------------------------------------
// GFXDECODE( ace )
//-------------------------------------------------
static GFXDECODE_START( ace )
GFXDECODE_ENTRY( Z80_TAG, 0xfc00, ace_charlayout, 0, 1 )
GFXDECODE_END
//-------------------------------------------------
// TIMER_DEVICE_CALLBACK_MEMBER( set_irq )
//-------------------------------------------------
TIMER_DEVICE_CALLBACK_MEMBER(ace_state::set_irq)
{
machine().device(Z80_TAG)->execute().set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
}
//-------------------------------------------------
// TIMER_DEVICE_CALLBACK_MEMBER( clear_irq )
//-------------------------------------------------
TIMER_DEVICE_CALLBACK_MEMBER(ace_state::clear_irq)
{
machine().device(Z80_TAG)->execute().set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE);
}
//-------------------------------------------------
// SCREEN_UPDATE_IND16( ace )
//-------------------------------------------------
UINT32 ace_state::screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
UINT8 y,ra,chr,gfx;
UINT16 sy=56,ma=0,x;
for (y = 0; y < 24; y++)
{
for (ra = 0; ra < 8; ra++)
{
UINT16 *p = &bitmap.pix16(sy++, 40);
for (x = ma; x < ma+32; x++)
{
chr = m_video_ram[x];
/* get pattern of pixels for that character scanline */
gfx = m_char_ram[((chr&0x7f)<<3) | ra] ^ (BIT(chr, 7) ? 0xff : 0);
/* Display a scanline of a character (8 pixels) */
*p++ = BIT(gfx, 7);
*p++ = BIT(gfx, 6);
*p++ = BIT(gfx, 5);
*p++ = BIT(gfx, 4);
*p++ = BIT(gfx, 3);
*p++ = BIT(gfx, 2);
*p++ = BIT(gfx, 1);
*p++ = BIT(gfx, 0);
}
}
ma+=32;
}
return 0;
}
//**************************************************************************
// DEVICE CONFIGURATION
//**************************************************************************
//-------------------------------------------------
// cassette_interface ace_cassette_interface
//-------------------------------------------------
static const cassette_interface ace_cassette_interface =
{
ace_cassette_formats,
NULL,
(cassette_state)(CASSETTE_STOPPED),
NULL,
NULL
};
//-------------------------------------------------
// ay8910_interface psg_intf
//-------------------------------------------------
static const ay8910_interface psg_intf =
{
AY8910_LEGACY_OUTPUT,
AY8910_DEFAULT_LOADS,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL,
DEVCB_NULL
};
//-------------------------------------------------
// sp0256_interface sp0256_intf
//-------------------------------------------------
static const sp0256_interface sp0256_intf =
{
DEVCB_NULL,
DEVCB_NULL
};
//-------------------------------------------------
// I8255A_INTERFACE( ppi_intf )
//-------------------------------------------------
READ8_MEMBER(ace_state::sby_r)
{
device_t *device = machine().device(SP0256AL2_TAG);
/*
bit description
PC0 SP0256 SBY
PC1
PC2
PC3
PC4
PC5
PC6
PC7
*/
return sp0256_sby_r(device);
}
WRITE8_MEMBER(ace_state::ald_w)
{
device_t *device = machine().device(SP0256AL2_TAG);
/*
bit description
PA0 SP0256 A1
PA1 SP0256 A2
PA2 SP0256 A3
PA3 SP0256 A4
PA4 SP0256 A5
PA5 SP0256 A6
PA6 SP0256 _ALD
PA7
*/
if (!BIT(data, 6))
{
sp0256_ALD_w(device, space, 0, data & 0x3f);
}
}
static I8255A_INTERFACE( ppi_intf )
{
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DRIVER_MEMBER(ace_state,sby_r),
DEVCB_DRIVER_MEMBER(ace_state,ald_w),
DEVCB_NULL,
DEVCB_NULL
};
//-------------------------------------------------
// Z80PIO_INTERFACE( pio_intf )
//-------------------------------------------------
READ8_MEMBER( ace_state::pio_pa_r )
{
/*
bit description
PA0
PA1 RxD
PA2
PA3
PA4
PA5
PA6
PA7
*/
return 0;
};
WRITE8_MEMBER( ace_state::pio_pa_w )
{
/*
bit description
PA0 RTS
PA1
PA2 CTS
PA3 TxD
PA4
PA5
PA6 STB
PA7
*/
// centronics strobe
m_centronics->strobe_w(!BIT(data, 6));
};
static Z80PIO_INTERFACE( pio_intf )
{
DEVCB_CPU_INPUT_LINE(Z80_TAG, INPUT_LINE_IRQ0),
DEVCB_DRIVER_MEMBER(ace_state, pio_pa_r),
DEVCB_DRIVER_MEMBER(ace_state, pio_pa_w),
DEVCB_NULL,
DEVCB_NULL,
DEVCB_DEVICE_MEMBER(CENTRONICS_TAG, centronics_device, write),
DEVCB_NULL
};
//**************************************************************************
// MACHINE INITIALIZATION
//**************************************************************************
//-------------------------------------------------
// MACHINE_START( ace )
//-------------------------------------------------
void ace_state::machine_start()
{
address_space &program = m_maincpu->space(AS_PROGRAM);
/* configure RAM */
switch (m_ram->size())
{
case 1*1024:
program.unmap_readwrite(0x4000, 0xffff);
break;
case 16*1024:
program.unmap_readwrite(0x8000, 0xffff);
break;
case 32*1024:
program.unmap_readwrite(0xc000, 0xffff);
break;
}
}
//**************************************************************************
// MACHINE CONFIGURATION
//**************************************************************************
//-------------------------------------------------
// MACHINE_CONFIG( ace )
//-------------------------------------------------
static MACHINE_CONFIG_START( ace, ace_state )
// basic machine hardware
MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_6_5MHz/2)
MCFG_CPU_PROGRAM_MAP(ace_mem)
MCFG_CPU_IO_MAP(ace_io)
MCFG_QUANTUM_TIME(attotime::from_hz(60))
// video hardware
MCFG_SCREEN_ADD(SCREEN_TAG, RASTER)
MCFG_SCREEN_UPDATE_DRIVER(ace_state, screen_update)
MCFG_SCREEN_RAW_PARAMS(XTAL_6_5MHz, 416, 0, 336, 312, 0, 304)
MCFG_TIMER_DRIVER_ADD_SCANLINE("set_irq", ace_state, set_irq, SCREEN_TAG, 31*8, 264)
MCFG_TIMER_DRIVER_ADD_SCANLINE("clear_irq", ace_state, clear_irq, SCREEN_TAG, 32*8, 264)
MCFG_PALETTE_LENGTH(2)
MCFG_PALETTE_INIT(black_and_white)
MCFG_GFXDECODE(ace)
// sound hardware
MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_WAVE_ADD(WAVE_TAG, CASSETTE_TAG)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MCFG_SOUND_ADD(SPEAKER_TAG, SPEAKER_SOUND, 0)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00)
MCFG_SOUND_ADD(AY8910_TAG, AY8910, XTAL_6_5MHz/2)
MCFG_SOUND_CONFIG(psg_intf)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
MCFG_SOUND_ADD(SP0256AL2_TAG, SP0256, XTAL_3MHz)
MCFG_SOUND_CONFIG(sp0256_intf)
MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
// devices
MCFG_CASSETTE_ADD(CASSETTE_TAG, ace_cassette_interface)
MCFG_SNAPSHOT_ADD("snapshot", ace, "ace", 1)
MCFG_I8255A_ADD(I8255_TAG, ppi_intf)
MCFG_Z80PIO_ADD(Z80PIO_TAG, XTAL_6_5MHz/2, pio_intf)
MCFG_CENTRONICS_PRINTER_ADD(CENTRONICS_TAG, standard_centronics)
// internal ram
MCFG_RAM_ADD(RAM_TAG)
MCFG_RAM_DEFAULT_SIZE("1K")
MCFG_RAM_EXTRA_OPTIONS("16K,32K,48K")
MACHINE_CONFIG_END
//**************************************************************************
// ROMS
//**************************************************************************
//-------------------------------------------------
// ROM( ace )
//-------------------------------------------------
ROM_START( jupace )
ROM_REGION( 0x10000, Z80_TAG, 0 )
ROM_LOAD( "rom-a.z1", 0x0000, 0x1000, CRC(dc8438a5) SHA1(8fa97eb71e5dd17c7d190c6587ee3840f839347c) )
ROM_LOAD( "rom-b.z2", 0x1000, 0x1000, CRC(4009f636) SHA1(98c5d4bcd74bcf014268cf4c00b2007ea5cc21f3) )
ROM_REGION( 0x1000, "fdc", 0 ) // Deep Thought disc interface
ROM_LOAD( "dos 4.bin", 0x0000, 0x1000, CRC(04c70448) SHA1(53ddcced6ae2feafd687a3b55864726656b71412) )
ROM_REGION( 0x10000, SP0256AL2_TAG, 0 )
ROM_LOAD( "sp0256-al2.ic1", 0x000, 0x800, CRC(b504ac15) SHA1(e60fcb5fa16ff3f3b69d36c7a6e955744d3feafc) )
ROM_END
//**************************************************************************
// SYSTEM DRIVERS
//**************************************************************************
// YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS
COMP( 1981, jupace, 0, 0, ace, ace, driver_device, 0, "Jupiter Cantab", "Jupiter Ace" , 0 )
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