Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-26 18:23:08 +03:00
Code Issues Actions 29 Packages Projects Releases Wiki Activity
4064f2ba82
mame/src/mame/drivers/nascom1.cpp

884 lines
30 KiB
C++
Raw Blame History

// license:GPL-2.0+
// copyright-holders:Dirk Best,Paul Danials
/******************************************************************************************************
Nascom 1/2/3
Single board computer
To Do:
- TTY
- Nascom2 has two dipswitch banks, and a memory control header
- Nascom3 (Gemini), nothing usable found
Cassette:
It outputs a string of pulses at 1953.125Hz to indicate a 1, and blank tape for 0. This means that
no tape will present a 0 to the UART instead of the expected 1 (idle). Part of the cassette
schematic is missing, so a few liberties have been taken. The result is you can save a file and
load it back. Haven't found wav files on the net to test with.
*****************************************************************************************************/
#include "emu.h"
#include "cpu/z80/z80.h"
#include "imagedev/cassette.h"
#include "imagedev/snapquik.h"
#include "machine/ay31015.h"
#include "machine/clock.h"
#include "machine/ram.h"
#include "machine/z80pio.h"
#include "machine/timer.h"
#include "sound/wave.h"
#include "speaker.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
#include "bus/nasbus/nasbus.h"
#include "emupal.h"
#include "softlist.h"
#include "screen.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class nascom_state : public driver_device
{
public:
nascom_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"),
m_ram(*this, RAM_TAG),
m_hd6402(*this, "hd6402"),
m_cass(*this, "cassette"),
m_screen(*this, "screen"),
m_gfxdecode(*this, "gfxdecode"),
m_palette(*this, "palette"),
m_videoram(*this, "videoram"),
m_gfx1_region(*this, "gfx1"),
m_keyboard(*this, "KEY.%u", 0)
{ }
void nascom(machine_config &config);
void init_nascom();
protected:
required_device<cpu_device> m_maincpu;
required_device<ram_device> m_ram;
virtual void machine_reset() override;
DECLARE_READ8_MEMBER(nascom1_port_00_r);
DECLARE_WRITE8_MEMBER(nascom1_port_00_w);
DECLARE_READ8_MEMBER(nascom1_port_01_r);
DECLARE_WRITE8_MEMBER(nascom1_port_01_w);
DECLARE_READ8_MEMBER(nascom1_port_02_r);
void screen_update(bitmap_ind16 &bitmap, const rectangle &cliprect, int char_height);
required_device<ay31015_device> m_hd6402;
required_device<cassette_image_device> m_cass;
required_device<screen_device> m_screen;
required_device<gfxdecode_device> m_gfxdecode;
required_device<palette_device> m_palette;
required_shared_ptr<uint8_t> m_videoram;
required_memory_region m_gfx1_region;
required_ioport_array<8> m_keyboard;
private:
int m_tape_size;
uint8_t *m_tape_image;
int m_tape_index;
uint8_t m_kb_select;
uint8_t m_kb_control;
bool m_cassinbit, m_cassoutbit, m_cassold;
u16 m_cass_cnt[2];
u8 m_port00;
TIMER_DEVICE_CALLBACK_MEMBER(kansas_r);
DECLARE_READ_LINE_MEMBER(nascom1_hd6402_si);
DECLARE_WRITE_LINE_MEMBER(nascom1_hd6402_so);
DECLARE_WRITE_LINE_MEMBER(kansas_w);
DECLARE_DEVICE_IMAGE_LOAD_MEMBER( nascom1_cassette );
DECLARE_DEVICE_IMAGE_UNLOAD_MEMBER( nascom1_cassette );
template<int Dest> DECLARE_SNAPSHOT_LOAD_MEMBER( nascom );
};
class nascom1_state : public nascom_state
{
public:
nascom1_state(const machine_config &mconfig, device_type type, const char *tag) :
nascom_state(mconfig, type, tag)
{ }
void nascom1(machine_config &config);
uint32_t screen_update_nascom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
private:
void nascom1_io(address_map &map);
void nascom1_mem(address_map &map);
};
class nascom2_state : public nascom_state
{
public:
nascom2_state(const machine_config &mconfig, device_type type, const char *tag) :
nascom_state(mconfig, type, tag),
m_nasbus(*this, NASBUS_TAG),
m_socket1(*this, "socket1"),
m_socket2(*this, "socket2"),
m_lsw1(*this, "lsw1")
{ }
void nascom2(machine_config &config);
void nascom2c(machine_config &config);
void init_nascom2c();
private:
DECLARE_WRITE_LINE_MEMBER(ram_disable_w);
DECLARE_WRITE_LINE_MEMBER(ram_disable_cpm_w);
uint32_t screen_update_nascom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
image_init_result load_cart(device_image_interface &image, generic_slot_device *slot, int slot_id);
DECLARE_DEVICE_IMAGE_LOAD_MEMBER(socket1) { return load_cart(image, m_socket1, 1); }
DECLARE_DEVICE_IMAGE_LOAD_MEMBER(socket2) { return load_cart(image, m_socket2, 2); }
void nascom2_io(address_map &map);
void nascom2_mem(address_map &map);
void nascom2c_mem(address_map &map);
virtual void machine_reset() override;
required_device<nasbus_device> m_nasbus;
required_device<generic_slot_device> m_socket1;
required_device<generic_slot_device> m_socket2;
required_ioport m_lsw1;
};
//**************************************************************************
// KEYBOARD
//**************************************************************************
READ8_MEMBER( nascom_state::nascom1_port_00_r )
{
return m_keyboard[m_kb_select]->read() | ~0x7f;
}
WRITE8_MEMBER( nascom_state::nascom1_port_00_w )
{
u8 bits = data ^ m_port00;
if (BIT(bits, 4))
m_cass->change_state(BIT(data, 4) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR);
// d0 falling edge: increment keyboard matrix column select counter
if (m_kb_control & ~data & 1)
m_kb_select = (m_kb_select + 1) & 7;
// d1 falling edge: reset it
if (m_kb_control & ~data & 2)
m_kb_select = 0;
m_kb_control = data & 3;
}
//**************************************************************************
// CASSETTE
//**************************************************************************
READ8_MEMBER( nascom_state::nascom1_port_01_r )
{
return m_hd6402->get_received_data();
}
WRITE8_MEMBER( nascom_state::nascom1_port_01_w )
{
m_hd6402->set_transmit_data(data);
}
READ8_MEMBER( nascom_state::nascom1_port_02_r )
{
uint8_t data = 0x31; // bits 0,4,5 not used
m_hd6402->write_swe(0);
data |= m_hd6402->or_r( ) ? 0x02 : 0;
data |= m_hd6402->pe_r( ) ? 0x04 : 0;
data |= m_hd6402->fe_r( ) ? 0x08 : 0;
data |= m_hd6402->tbmt_r() ? 0x40 : 0;
data |= m_hd6402->dav_r( ) ? 0x80 : 0;
m_hd6402->write_swe(1);
return data;
}
READ_LINE_MEMBER( nascom_state::nascom1_hd6402_si )
{
return m_cassinbit;
}
WRITE_LINE_MEMBER( nascom_state::nascom1_hd6402_so )
{
m_cassoutbit = state;
}
WRITE_LINE_MEMBER( nascom_state::kansas_w )
{
// incoming 3906.25Hz
if (state)
{
if (m_cassoutbit)
m_cass->output(BIT(m_cass_cnt[0], 0) ? -1.0 : +1.0); // 1953.125Hz
else
m_cass->output(1.0);
m_cass_cnt[0]++;
}
m_hd6402->write_tcp(state);
}
TIMER_DEVICE_CALLBACK_MEMBER( nascom_state::kansas_r )
{
// cassette - pulses = 1; no pulses = 0
m_cass_cnt[1]++;
bool cass_ws = (m_cass->input() > +0.04) ? 1 : 0;
if (cass_ws != m_cassold)
{
m_cassold = cass_ws;
m_cassinbit = 1;
m_cass_cnt[1] = 0;
}
else
if (m_cass_cnt[1] > 10)
{
m_cass_cnt[1] = 10;
m_cassinbit = !cass_ws;
}
}
// This stuff has never been connected up - what's it for?
DEVICE_IMAGE_LOAD_MEMBER( nascom_state, nascom1_cassette )
{
m_tape_size = image.length();
m_tape_image = (uint8_t*)image.ptr();
if (!m_tape_image)
return image_init_result::FAIL;
m_tape_index = 0;
return image_init_result::PASS;
}
DEVICE_IMAGE_UNLOAD_MEMBER( nascom_state, nascom1_cassette )
{
m_tape_image = nullptr;
m_tape_size = m_tape_index = 0;
}
//**************************************************************************
// SNAPSHOTS
//**************************************************************************
template<int Dest>
SNAPSHOT_LOAD_MEMBER( nascom_state, nascom )
{
uint8_t line[29];
while (image.fread(&line, sizeof(line)) == sizeof(line))
{
unsigned int addr, b[8], dummy;
if (sscanf((char *)line, "%4x %x %x %x %x %x %x %x %x",
&addr, &b[0], &b[1], &b[2], &b[3], &b[4], &b[5], &b[6], &b[7]) == 9)
{
for (int i = 0; i < 8; i++)
{
switch (Dest)
{
case 0: // snapshot
m_maincpu->space(AS_PROGRAM).write_byte(addr++, b[i]);
break;
case 1: // character rom
m_gfx1_region->base()[addr++] = b[i];
break;
}
}
}
else
{
image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported file format");
return image_init_result::FAIL;
}
dummy = 0x00;
while (!image.image_feof() && dummy != 0x0a && dummy != 0x1f)
{
image.fread(&dummy, 1);
}
}
return image_init_result::PASS;
}
//**************************************************************************
// SOCKETS
//**************************************************************************
image_init_result nascom2_state::load_cart(device_image_interface &image, generic_slot_device *slot, int slot_id)
{
// loading directly from file
if (!image.loaded_through_softlist())
{
if (slot->length() > 0x1000)
{
image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported file size");
return image_init_result::FAIL;
}
slot->rom_alloc(slot->length(), GENERIC_ROM8_WIDTH, ENDIANNESS_LITTLE);
slot->fread(slot->get_rom_base(), slot->length());
// we just assume that socket1 should be loaded to 0xc000 and socket2 to 0xd000
switch (slot_id)
{
case 1:
m_maincpu->space(AS_PROGRAM).install_rom(0xc000, 0xc000 + slot->length() - 1, slot->get_rom_base());
break;
case 2:
m_maincpu->space(AS_PROGRAM).install_rom(0xd000, 0xd000 + slot->length() - 1, slot->get_rom_base());
break;
}
}
// loading from software list. this supports multiple regions to load to
else
{
uint8_t *region_b000 = image.get_software_region("b000");
uint8_t *region_c000 = image.get_software_region("c000");
uint8_t *region_d000 = image.get_software_region("d000");
if (region_b000 != nullptr)
{
uint32_t size = image.get_software_region_length("b000");
m_maincpu->space(AS_PROGRAM).install_rom(0xb000, 0xb000 + size - 1, region_b000);
}
if (region_c000 != nullptr)
{
uint32_t size = image.get_software_region_length("c000");
m_maincpu->space(AS_PROGRAM).install_rom(0xc000, 0xc000 + size - 1, region_c000);
}
if (region_d000 != nullptr)
{
uint32_t size = image.get_software_region_length("d000");
m_maincpu->space(AS_PROGRAM).install_rom(0xd000, 0xd000 + size - 1, region_d000);
}
}
return image_init_result::PASS;
}
//**************************************************************************
// DRIVER INIT
//**************************************************************************
void nascom_state::machine_reset()
{
m_kb_select = 0;
m_kb_control = 0;
m_port00 = 0;
// Set up hd6402 pins
m_hd6402->write_swe(1);
m_hd6402->write_cs(0);
m_hd6402->write_np(1);
m_hd6402->write_nb1(1);
m_hd6402->write_nb2(1);
m_hd6402->write_eps(1);
m_hd6402->write_tsb(1);
m_hd6402->write_cs(1);
}
void nascom_state::init_nascom()
{
// install extra memory
if (m_ram->size() > 0)
{
m_maincpu->space(AS_PROGRAM).install_ram(0x1000, 0x1000 + m_ram->size() - 1, m_ram->pointer());
}
}
void nascom2_state::machine_reset()
{
// base machine reset
nascom_state::machine_reset();
// restart address (on the real system, a12 to a15 are forced to 1 for one memory cycle)
m_maincpu->set_state_int(Z80_PC, m_lsw1->read() << 12);
}
// since we don't know for which regions we should disable ram, we just let other devices
// overwrite the region they need, and re-install our ram when they are disabled
WRITE_LINE_MEMBER( nascom2_state::ram_disable_w )
{
if (state)
{
// enable ram again
m_maincpu->space(AS_PROGRAM).install_ram(0x1000, 0x1000 + m_ram->size() - 1, m_ram->pointer());
}
}
void nascom2_state::init_nascom2c()
{
// install memory
m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x0000 + m_ram->size() - 1, m_ram->pointer());
}
WRITE_LINE_MEMBER( nascom2_state::ram_disable_cpm_w )
{
if (state)
{
// enable ram again
m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x0000 + m_ram->size() - 1, m_ram->pointer());
}
}
//**************************************************************************
// VIDEO
//**************************************************************************
static const gfx_layout nascom1_charlayout =
{
8, 16,
128,
1,
{ 0 },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8, 7*8,
8*8, 9*8,10*8,11*8,12*8,13*8,14*8,15*8 },
8 * 16
};
static GFXDECODE_START( gfx_nascom1 )
GFXDECODE_ENTRY("gfx1", 0x0000, nascom1_charlayout, 0, 1)
GFXDECODE_END
uint32_t nascom1_state::screen_update_nascom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
screen_update(bitmap, cliprect, 16);
return 0;
}
static const gfx_layout nascom2_charlayout =
{
8, 14,
256,
1,
{ 0 },
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0*8, 1*8, 2*8, 3*8, 4*8, 5*8, 6*8,
7*8, 8*8, 9*8, 10*8, 11*8, 12*8, 13*8 },
8 * 16
};
static GFXDECODE_START( gfx_nascom2 )
GFXDECODE_ENTRY("gfx1", 0x0000, nascom2_charlayout, 0, 1)
GFXDECODE_END
uint32_t nascom2_state::screen_update_nascom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{
screen_update(bitmap, cliprect, 14);
return 0;
}
void nascom_state::screen_update(bitmap_ind16 &bitmap, const rectangle &cliprect, int char_height)
{
for (int sx = 0; sx < 48; sx++)
{
m_gfxdecode->gfx(0)->opaque(bitmap,cliprect, m_videoram[0x03ca + sx], 1, 0, 0, sx * 8, 0);
}
for (int sy = 0; sy < 15; sy++)
{
for (int sx = 0; sx < 48; sx++)
{
m_gfxdecode->gfx(0)->opaque(bitmap,cliprect, m_videoram[0x000a + (sy * 64) + sx], 1, 0, 0, sx * 8, (sy + 1) * char_height);
}
}
}
//**************************************************************************
// ADDRESS MAPS
//**************************************************************************
void nascom1_state::nascom1_mem(address_map &map)
{
map(0x0000, 0x07ff).rom(); // MONITOR
map(0x0800, 0x0bff).ram().share("videoram");
map(0x0c00, 0x0fff).ram(); // WRAM
}
void nascom1_state::nascom1_io(address_map &map)
{
map.global_mask(0x0f);
map(0x00, 0x00).rw(FUNC(nascom1_state::nascom1_port_00_r), FUNC(nascom1_state::nascom1_port_00_w));
map(0x01, 0x01).rw(FUNC(nascom1_state::nascom1_port_01_r), FUNC(nascom1_state::nascom1_port_01_w));
map(0x02, 0x02).r(FUNC(nascom1_state::nascom1_port_02_r));
map(0x04, 0x07).rw("z80pio", FUNC(z80pio_device::read), FUNC(z80pio_device::write));
}
void nascom2_state::nascom2_mem(address_map &map)
{
map(0x0000, 0x07ff).rom(); // MONITOR
map(0x0800, 0x0bff).ram().share("videoram");
map(0x0c00, 0x0fff).ram(); // WRAM
map(0xe000, 0xffff).rom().region("basic", 0);
}
void nascom2_state::nascom2_io(address_map &map)
{
map.global_mask(0xff);
map(0x00, 0x00).rw(FUNC(nascom2_state::nascom1_port_00_r), FUNC(nascom2_state::nascom1_port_00_w));
map(0x01, 0x01).rw(FUNC(nascom2_state::nascom1_port_01_r), FUNC(nascom2_state::nascom1_port_01_w));
map(0x02, 0x02).r(FUNC(nascom2_state::nascom1_port_02_r));
map(0x04, 0x07).rw("z80pio", FUNC(z80pio_device::read), FUNC(z80pio_device::write));
}
void nascom2_state::nascom2c_mem(address_map &map)
{
map(0xf000, 0xf7ff).rom().region("maincpu", 0);
map(0xf800, 0xfbff).ram().share("videoram");
map(0xfc00, 0xffff).ram(); // WRAM
}
//**************************************************************************
// INPUT PORTS
//**************************************************************************
static INPUT_PORTS_START( nascom1 )
PORT_START("KEY.0")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Backspace ClearScreen") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(8)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("New Line") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1)
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('@')
PORT_BIT(0x48, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("KEY.1")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('h')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('b')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('f')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('x')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR('t')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_UP) PORT_CHAR(UCHAR_MAMEKEY(UP))
PORT_START("KEY.2")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('j')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR('n')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('d')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('z')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR('y')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LEFT) PORT_CHAR(UCHAR_MAMEKEY(LEFT))
PORT_START("KEY.3")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR('k')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR('m')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('e')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('s')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('u')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_DOWN) PORT_CHAR(UCHAR_MAMEKEY(DOWN))
PORT_START("KEY.4")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('l')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('w')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('a')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('i')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_RIGHT) PORT_CHAR(UCHAR_MAMEKEY(RIGHT))
PORT_START("KEY.5")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR(0xA3)
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('q')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('o')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("KEY.6")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_0) PORT_CHAR('0')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR('p')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_START("KEY.7")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('g')
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('v')
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$')
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('c')
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('r')
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
INPUT_PORTS_END
static INPUT_PORTS_START( nascom2 )
PORT_INCLUDE(nascom1)
PORT_MODIFY("KEY.0")
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Back CS") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(8)
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Enter Escape") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_CHAR(27)
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CTRL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_CHAR(UCHAR_SHIFT_2)
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_UNUSED)
PORT_MODIFY("KEY.6")
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('[') PORT_CHAR('\\')
PORT_MODIFY("KEY.7")
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(']') PORT_CHAR('_')
// link switch on board
PORT_START("lsw1")
PORT_DIPNAME(0x0f, 0x00, "Restart address")
PORT_DIPLOCATION("LSW1:1,2,3,4")
PORT_DIPSETTING(0x00, "0000H")
PORT_DIPSETTING(0x01, "1000H")
PORT_DIPSETTING(0x02, "2000H")
PORT_DIPSETTING(0x03, "3000H")
PORT_DIPSETTING(0x04, "4000H")
PORT_DIPSETTING(0x05, "5000H")
PORT_DIPSETTING(0x06, "6000H")
PORT_DIPSETTING(0x07, "7000H")
PORT_DIPSETTING(0x08, "8000H")
PORT_DIPSETTING(0x09, "9000H")
PORT_DIPSETTING(0x0a, "A000H")
PORT_DIPSETTING(0x0b, "B000H")
PORT_DIPSETTING(0x0c, "C000H")
PORT_DIPSETTING(0x0d, "D000H")
PORT_DIPSETTING(0x0e, "E000H")
PORT_DIPSETTING(0x0f, "F000H")
INPUT_PORTS_END
static INPUT_PORTS_START( nascom2c )
PORT_INCLUDE(nascom2)
PORT_MODIFY("lsw1")
PORT_DIPNAME(0x0f, 0x0f, "Restart address")
PORT_DIPLOCATION("LSW1:1,2,3,4")
PORT_DIPSETTING(0x00, "0000H")
PORT_DIPSETTING(0x01, "1000H")
PORT_DIPSETTING(0x02, "2000H")
PORT_DIPSETTING(0x03, "3000H")
PORT_DIPSETTING(0x04, "4000H")
PORT_DIPSETTING(0x05, "5000H")
PORT_DIPSETTING(0x06, "6000H")
PORT_DIPSETTING(0x07, "7000H")
PORT_DIPSETTING(0x08, "8000H")
PORT_DIPSETTING(0x09, "9000H")
PORT_DIPSETTING(0x0a, "A000H")
PORT_DIPSETTING(0x0b, "B000H")
PORT_DIPSETTING(0x0c, "C000H")
PORT_DIPSETTING(0x0d, "D000H")
PORT_DIPSETTING(0x0e, "E000H")
PORT_DIPSETTING(0x0f, "F000H")
INPUT_PORTS_END
//**************************************************************************
// MACHINE DRIVERS
//**************************************************************************
void nascom_state::nascom(machine_config &config)
{
// video hardware
SCREEN(config, m_screen, SCREEN_TYPE_RASTER);
m_screen->set_refresh_hz(50);
m_screen->set_vblank_time(ATTOSECONDS_IN_USEC(2500)); /* not accurate */
m_screen->set_size(48 * 8, 16 * 16);
m_screen->set_visarea(0, 48 * 8 - 1, 0, 16 * 16 - 1);
m_screen->set_screen_update(FUNC(nascom1_state::screen_update_nascom));
m_screen->set_palette(m_palette);
GFXDECODE(config, m_gfxdecode, m_palette, gfx_nascom1);
PALETTE(config, m_palette, palette_device::MONOCHROME);
// uart
AY31015(config, m_hd6402);
m_hd6402->read_si_callback().set(FUNC(nascom_state::nascom1_hd6402_si));
m_hd6402->write_so_callback().set(FUNC(nascom_state::nascom1_hd6402_so));
m_hd6402->set_auto_rdav(true);
clock_device &uart_clock(CLOCK(config, "uart_clock", (16_MHz_XTAL / 16) / 256));
uart_clock.signal_handler().set(FUNC(nascom_state::kansas_w));
uart_clock.signal_handler().append(m_hd6402, FUNC(ay31015_device::write_rcp));
// cassette is connected to the uart
CASSETTE(config, m_cass);
m_cass->set_interface("nascom_cass");
m_cass->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_ENABLED);
SPEAKER(config, "mono").front_center();
WAVE(config, "wave", m_cass).add_route(ALL_OUTPUTS, "mono", 0.05);
TIMER(config, "kansas_r").configure_periodic(FUNC(nascom_state::kansas_r), attotime::from_hz(40000));
// pio
Z80PIO(config, "z80pio", 16_MHz_XTAL / 8);
// internal extra ram
RAM(config, m_ram).set_default_size("48K").set_extra_options("8K,16K,32K");
// devices
snapshot_image_device &snapshot(SNAPSHOT(config, "snapshot"));
snapshot.set_handler(snapquick_load_delegate(&SNAPSHOT_LOAD_NAME(nascom_state, nascom<0>), this), "nas", attotime::from_msec(500));
snapshot.set_interface("nascom_snap");
snapshot_image_device &snapchar(SNAPSHOT(config, "snapchar"));
snapchar.set_handler(snapquick_load_delegate(&SNAPSHOT_LOAD_NAME(nascom_state, nascom<1>), this), "chr", attotime::from_msec(500));
snapchar.set_interface("nascom_char");
}
void nascom1_state::nascom1(machine_config &config)
{
nascom(config);
Z80(config, m_maincpu, 16_MHz_XTAL / 8);
m_maincpu->set_addrmap(AS_PROGRAM, &nascom1_state::nascom1_mem);
m_maincpu->set_addrmap(AS_IO, &nascom1_state::nascom1_io);
// software
SOFTWARE_LIST(config, "snap_list").set_original("nascom_snap").set_filter("NASCOM1");
}
void nascom2_state::nascom2(machine_config &config)
{
nascom(config);
Z80(config, m_maincpu, 16_MHz_XTAL / 4);
m_maincpu->set_addrmap(AS_PROGRAM, &nascom2_state::nascom2_mem);
m_maincpu->set_addrmap(AS_IO, &nascom2_state::nascom2_io);
// video hardware
m_screen->set_size(48 * 8, 16 * 14);
m_screen->set_visarea(0, 48 * 8 - 1, 0, 16 * 14 - 1);
m_screen->set_screen_update(FUNC(nascom2_state::screen_update_nascom));
m_gfxdecode->set_info(gfx_nascom2);
// generic sockets for ram/rom (todo: support ram here)
GENERIC_SOCKET(config, m_socket1, generic_plain_slot, "nascom_socket", "bin,rom");
m_socket1->set_device_load(device_image_load_delegate(&nascom2_state::device_image_load_socket1, this));
GENERIC_SOCKET(config, m_socket2, generic_plain_slot, "nascom_socket", "bin,rom");
m_socket2->set_device_load(device_image_load_delegate(&nascom2_state::device_image_load_socket2, this));
// nasbus expansion bus
nasbus_device &nasbus(NASBUS(config, NASBUS_TAG));
nasbus.ram_disable().set(FUNC(nascom2_state::ram_disable_w));
nasbus.set_program_space(m_maincpu, AS_PROGRAM);
nasbus.set_io_space(m_maincpu, AS_IO);
NASBUS_SLOT(config, "nasbus1", nasbus_slot_cards, nullptr);
NASBUS_SLOT(config, "nasbus2", nasbus_slot_cards, nullptr);
NASBUS_SLOT(config, "nasbus3", nasbus_slot_cards, nullptr);
NASBUS_SLOT(config, "nasbus4", nasbus_slot_cards, nullptr);
// software
SOFTWARE_LIST(config, "snap_list").set_original("nascom_snap").set_filter("NASCOM2");
SOFTWARE_LIST(config, "socket_list").set_original("nascom_socket");
SOFTWARE_LIST(config, "floppy_list").set_original("nascom_flop");
}
void nascom2_state::nascom2c(machine_config &config)
{
nascom2(config);
m_maincpu->set_addrmap(AS_PROGRAM, &nascom2_state::nascom2c_mem);
m_ram->set_default_size("60K");
subdevice<nasbus_device>(NASBUS_TAG)->ram_disable().set(FUNC(nascom2_state::ram_disable_cpm_w));
subdevice<nasbus_slot_device>("nasbus1")->set_default_option("floppy");
}
//**************************************************************************
// ROM DEFINITIONS
//**************************************************************************
ROM_START( nascom1 )
ROM_REGION(0x0800, "maincpu", 0)
ROM_DEFAULT_BIOS("t4")
ROM_SYSTEM_BIOS(0, "t1", "NasBug T1")
ROMX_LOAD("nasbugt1.ic38", 0x0000, 0x0400, CRC(8ea07054) SHA1(3f9a8632826003d6ea59d2418674d0fb09b83a4c), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "t2", "NasBug T2")
ROMX_LOAD("nasbugt2.ic38", 0x0000, 0x0400, CRC(e371b58a) SHA1(485b20a560b587cf9bb4208ba203b12b3841689b), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "t4", "NasBug T4")
ROMX_LOAD("nasbugt4.rom", 0x0000, 0x0800, CRC(f391df68) SHA1(00218652927afc6360c57e77d6a4fd32d4e34566), ROM_BIOS(2)) // should really be split in halves for ic38 and ic39
ROM_SYSTEM_BIOS(3, "bbug", "B-Bug") // by Viewfax 1978
ROMX_LOAD("bbug.rom", 0x0000, 0x0800, CRC(1b1a340d) SHA1(99ce4d771871b3d797cc465d6245c40e41acef3e), ROM_BIOS(3))
ROM_REGION(0x0800, "gfx1", 0)
ROM_LOAD("nascom1.ic16", 0x0000, 0x0800, CRC(33e92a04) SHA1(be6e1cc80e7f95a032759f7df19a43c27ff93a52)) // MCM6576P
ROM_END
ROM_START( nascom2 )
ROM_REGION(0x0800, "maincpu", 0)
ROM_DEFAULT_BIOS("ns3")
ROM_SYSTEM_BIOS(0, "ns1", "Nas-Sys 1")
ROMX_LOAD("nassys1.ic34", 0x0000, 0x0800, CRC(b6300716) SHA1(29da7d462ba3f569f70ed3ecd93b981f81c7adfa), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "ns3", "Nas-Sys 3")
ROMX_LOAD("nassys3.ic34", 0x0000, 0x0800, CRC(6804e675) SHA1(d55dccec2d1da992a39c38b0b6d24e3809073513), ROM_BIOS(1))
ROM_SYSTEM_BIOS(2, "ns3a", "Nas-Sys 3 (AVC)")
ROMX_LOAD("nassys3a.ic34", 0x0000, 0x0800, CRC(39d24a05) SHA1(7bfb574c1f8ce0f460a53b9a6c11c711aabccbb8), ROM_BIOS(2))
ROM_SYSTEM_BIOS(3, "ns3n", "Nas-Sys 3 (NET)")
ROMX_LOAD("nassys3n.ic34", 0x0000, 0x0800, CRC(87ef62bb) SHA1(dab81511925be36044b3e8b0ba26a0c717fe83ae), ROM_BIOS(3))
ROM_REGION(0x2000, "basic", 0)
ROM_LOAD("basic.ic43", 0x0000, 0x2000, CRC(5cb5197b) SHA1(c41669c2b6d6dea808741a2738426d97bccc9b07))
ROM_REGION(0x1000, "gfx1", 0)
ROM_LOAD("nascom1.ic66", 0x0000, 0x0800, CRC(33e92a04) SHA1(be6e1cc80e7f95a032759f7df19a43c27ff93a52))
ROM_LOAD("nasgra.ic54", 0x0800, 0x0800, CRC(2bc09d32) SHA1(d384297e9b02cbcb283c020da51b3032ff62b1ae))
ROM_END
ROM_START( nascom2c )
ROM_REGION(0x0800, "maincpu", 0)
ROM_DEFAULT_BIOS("cpm32")
ROM_SYSTEM_BIOS(0, "cpm21", "CP/M boot v2.1")
ROMX_LOAD("cpmbt21.ic34", 0x0000, 0x0800, CRC(44b67ffc) SHA1(60c8335f24798f8de7ad48a4cd03e56a60d87b63), ROM_BIOS(0))
ROM_SYSTEM_BIOS(1, "cpm32", "CP/M boot v3.2")
ROMX_LOAD("cpmbt32.ic34", 0x0000, 0x0800, CRC(724f03ba) SHA1(d0958c231e5b121b6c4c97d03c76c207acf90f5a), ROM_BIOS(1))
ROM_REGION(0x1000, "gfx1", 0)
ROM_LOAD("nascom1.ic66", 0x0000, 0x0800, CRC(33e92a04) SHA1(be6e1cc80e7f95a032759f7df19a43c27ff93a52))
ROM_LOAD("nasgra.ic54", 0x0800, 0x0800, CRC(2bc09d32) SHA1(d384297e9b02cbcb283c020da51b3032ff62b1ae))
ROM_END
//**************************************************************************
// GAME DRIVERS
//**************************************************************************
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 1978, nascom1, 0, 0, nascom1, nascom1, nascom1_state, init_nascom, "Nascom Microcomputers", "Nascom 1", MACHINE_NO_SOUND_HW )
COMP( 1979, nascom2, 0, 0, nascom2, nascom2, nascom2_state, init_nascom, "Nascom Microcomputers", "Nascom 2", MACHINE_NO_SOUND_HW )
COMP( 1980, nascom2c, nascom2, 0, nascom2c, nascom2c, nascom2_state, init_nascom2c, "Nascom Microcomputers", "Nascom 2 (CP/M)", MACHINE_NO_SOUND_HW )
Reference in New Issue View Git Blame Copy Permalink