diff options
Diffstat (limited to 'src/mess/drivers/nascom1.c')
-rw-r--r-- | src/mess/drivers/nascom1.c | 776 |
1 files changed, 0 insertions, 776 deletions
diff --git a/src/mess/drivers/nascom1.c b/src/mess/drivers/nascom1.c deleted file mode 100644 index 216d9de8e64..00000000000 --- a/src/mess/drivers/nascom1.c +++ /dev/null @@ -1,776 +0,0 @@ -// license:GPL-2.0+ -// copyright-holders:Dirk Best -/*************************************************************************** - - Nascom 1/2/3 - - Single board computer - -***************************************************************************/ - -#include "emu.h" -#include "cpu/z80/z80.h" -#include "machine/ram.h" -#include "machine/z80pio.h" -#include "machine/ay31015.h" -#include "imagedev/cassette.h" -#include "imagedev/snapquik.h" -#include "bus/generic/slot.h" -#include "bus/generic/carts.h" -#include "bus/nasbus/nasbus.h" - - -//************************************************************************** -// CONSTANTS/MACROS -//************************************************************************** - -#define NASCOM1_KEY_RESET 0x02 -#define NASCOM1_KEY_INCR 0x01 - - -//************************************************************************** -// TYPE DEFINITIONS -//************************************************************************** - -struct nascom1_portstat_t -{ - UINT8 stat_flags; - UINT8 stat_count; -}; - -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_hd6402(*this, "hd6402"), - m_cassette(*this, "cassette"), - m_ram(*this, RAM_TAG), - m_gfxdecode(*this, "gfxdecode"), - m_palette(*this, "palette"), - m_videoram(*this, "videoram"), - m_keyboard(*this, "KEY") - { } - - required_device<cpu_device> m_maincpu; - required_device<ay31015_device> m_hd6402; - required_device<cassette_image_device> m_cassette; - required_device<ram_device> m_ram; - required_device<gfxdecode_device> m_gfxdecode; - required_device<palette_device> m_palette; - required_shared_ptr<UINT8> m_videoram; - required_ioport_array<9> m_keyboard; - - int m_tape_size; - UINT8 *m_tape_image; - int m_tape_index; - nascom1_portstat_t m_portstat; - - 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); - DECLARE_DRIVER_INIT(nascom); - void screen_update(bitmap_ind16 &bitmap, const rectangle &cliprect, int char_height); - DECLARE_READ8_MEMBER(nascom1_hd6402_si); - DECLARE_WRITE8_MEMBER(nascom1_hd6402_so); - DECLARE_DEVICE_IMAGE_LOAD_MEMBER( nascom1_cassette ); - DECLARE_DEVICE_IMAGE_UNLOAD_MEMBER( nascom1_cassette ); - DECLARE_SNAPSHOT_LOAD_MEMBER( nascom1 ); - -protected: - virtual void machine_reset(); - -private: - -}; - -class nascom1_state : public nascom_state -{ -public: - nascom1_state(const machine_config &mconfig, device_type type, const char *tag) : - nascom_state(mconfig, type, tag) - {} - - UINT32 screen_update_nascom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); - -private: -}; - -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"), - m_socket1(*this, "socket1"), - m_socket2(*this, "socket2"), - m_lsw1(*this, "lsw1") - {} - - DECLARE_WRITE_LINE_MEMBER(ram_disable_w); - DECLARE_WRITE_LINE_MEMBER(ram_disable_cpm_w); - DECLARE_DRIVER_INIT(nascom2); - DECLARE_DRIVER_INIT(nascom2c); - UINT32 screen_update_nascom(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); - - int load_cart(device_image_interface &image, generic_slot_device *slot, int slot_id); - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(socket1_load) { return load_cart(image, m_socket1, 1); } - DECLARE_DEVICE_IMAGE_LOAD_MEMBER(socket2_load) { return load_cart(image, m_socket2, 2); } - -protected: - virtual void machine_reset(); - -private: - 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 ) -{ - if (m_portstat.stat_count < 9) - return ((m_keyboard[m_portstat.stat_count])->read() | ~0x7f); - - return 0xff; -} - -WRITE8_MEMBER( nascom_state::nascom1_port_00_w ) -{ - m_cassette->change_state( - (data & 0x10) ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); - - if (!(data & NASCOM1_KEY_RESET)) - { - if (m_portstat.stat_flags & NASCOM1_KEY_RESET) - m_portstat.stat_count = 0; - } - else - m_portstat.stat_flags = NASCOM1_KEY_RESET; - - if (!(data & NASCOM1_KEY_INCR)) - { - if (m_portstat.stat_flags & NASCOM1_KEY_INCR) - m_portstat.stat_count++; - } - else - m_portstat.stat_flags = NASCOM1_KEY_INCR; -} - - -//************************************************************************** -// 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 data = 0x31; - - m_hd6402->set_input_pin(AY31015_SWE, 0); - data |= m_hd6402->get_output_pin(AY31015_OR ) ? 0x02 : 0; - data |= m_hd6402->get_output_pin(AY31015_PE ) ? 0x04 : 0; - data |= m_hd6402->get_output_pin(AY31015_FE ) ? 0x08 : 0; - data |= m_hd6402->get_output_pin(AY31015_TBMT) ? 0x40 : 0; - data |= m_hd6402->get_output_pin(AY31015_DAV ) ? 0x80 : 0; - m_hd6402->set_input_pin(AY31015_SWE, 1); - - return data; -} - -READ8_MEMBER( nascom_state::nascom1_hd6402_si ) -{ - return 1; -} - -WRITE8_MEMBER( nascom_state::nascom1_hd6402_so ) -{ -} - -DEVICE_IMAGE_LOAD_MEMBER( nascom_state, nascom1_cassette ) -{ - m_tape_size = image.length(); - m_tape_image = (UINT8*)image.ptr(); - - if (!m_tape_image) - return IMAGE_INIT_FAIL; - - m_tape_index = 0; - return IMAGE_INIT_PASS; -} - -DEVICE_IMAGE_UNLOAD_MEMBER( nascom_state, nascom1_cassette ) -{ - m_tape_image = NULL; - m_tape_size = m_tape_index = 0; -} - - -//************************************************************************** -// SNAPSHOTS -//************************************************************************** - -SNAPSHOT_LOAD_MEMBER( nascom_state, nascom1 ) -{ - UINT8 line[35]; - - while (image.fread( &line, sizeof(line)) == sizeof(line)) - { - unsigned int addr, b0, b1, b2, b3, b4, b5, b6, b7, dummy; - - if (sscanf((char *)line, "%x %x %x %x %x %x %x %x %x %x\010\010\n", - &addr, &b0, &b1, &b2, &b3, &b4, &b5, &b6, &b7, &dummy) == 10) - { - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b0); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b1); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b2); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b3); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b4); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b5); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b6); - m_maincpu->space(AS_PROGRAM).write_byte(addr++, b7); - } - } - - return IMAGE_INIT_PASS; -} - - -//************************************************************************** -// SOCKETS -//************************************************************************** - -int nascom2_state::load_cart(device_image_interface &image, generic_slot_device *slot, int slot_id) -{ - // loading directly from file - if (image.software_entry() == NULL) - { - if (slot->length() > 0x1000) - { - image.seterror(IMAGE_ERROR_UNSPECIFIED, "Unsupported file size"); - return IMAGE_INIT_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 *region_b000 = image.get_software_region("b000"); - UINT8 *region_c000 = image.get_software_region("c000"); - UINT8 *region_d000 = image.get_software_region("d000"); - - if (region_b000 != NULL) - { - UINT32 size = image.get_software_region_length("b000"); - m_maincpu->space(AS_PROGRAM).install_rom(0xb000, 0xb000 + size - 1, region_b000); - } - - if (region_c000 != NULL) - { - UINT32 size = image.get_software_region_length("c000"); - m_maincpu->space(AS_PROGRAM).install_rom(0xc000, 0xc000 + size - 1, region_c000); - } - - if (region_d000 != NULL) - { - UINT32 size = image.get_software_region_length("d000"); - m_maincpu->space(AS_PROGRAM).install_rom(0xd000, 0xd000 + size - 1, region_d000); - } - } - - return IMAGE_INIT_PASS; -} - - -//************************************************************************** -// DRIVER INIT -//************************************************************************** - -void nascom_state::machine_reset() -{ - // Set up hd6402 pins - m_hd6402->set_input_pin(AY31015_SWE, 1); - - m_hd6402->set_input_pin(AY31015_CS, 0); - m_hd6402->set_input_pin(AY31015_NP, 1); - m_hd6402->set_input_pin(AY31015_NB1, 1); - m_hd6402->set_input_pin(AY31015_NB2, 1); - m_hd6402->set_input_pin(AY31015_EPS, 1); - m_hd6402->set_input_pin(AY31015_TSB, 1); - m_hd6402->set_input_pin(AY31015_CS, 1); -} - -DRIVER_INIT_MEMBER( nascom_state, 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); -} - -DRIVER_INIT_MEMBER( nascom2_state, nascom2 ) -{ - DRIVER_INIT_CALL(nascom); - - // setup nasbus - m_nasbus->set_program_space(&m_maincpu->space(AS_PROGRAM)); - m_nasbus->set_io_space(&m_maincpu->space(AS_IO)); -} - -// 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()); - } -} - -DRIVER_INIT_MEMBER( nascom2_state, nascom2c ) -{ - // install memory - m_maincpu->space(AS_PROGRAM).install_ram(0x0000, 0x0000 + m_ram->size() - 1, m_ram->pointer()); - - // setup nasbus - m_nasbus->set_program_space(&m_maincpu->space(AS_PROGRAM)); - m_nasbus->set_io_space(&m_maincpu->space(AS_IO)); -} - -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( nascom1 ) - GFXDECODE_ENTRY("gfx1", 0x0000, nascom1_charlayout, 0, 1) -GFXDECODE_END - -UINT32 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( nascom2 ) - GFXDECODE_ENTRY("gfx1", 0x0000, nascom2_charlayout, 0, 1) -GFXDECODE_END - -UINT32 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 -//************************************************************************** - -static ADDRESS_MAP_START( nascom1_mem, AS_PROGRAM, 8, nascom1_state ) - AM_RANGE(0x0000, 0x07ff) AM_ROM // MONITOR - AM_RANGE(0x0800, 0x0bff) AM_RAM AM_SHARE("videoram") - AM_RANGE(0x0c00, 0x0fff) AM_RAM // WRAM -ADDRESS_MAP_END - -static ADDRESS_MAP_START( nascom1_io, AS_IO, 8, nascom1_state ) - ADDRESS_MAP_GLOBAL_MASK(0x0f) - AM_RANGE(0x00, 0x00) AM_READWRITE(nascom1_port_00_r, nascom1_port_00_w) - AM_RANGE(0x01, 0x01) AM_READWRITE(nascom1_port_01_r, nascom1_port_01_w) - AM_RANGE(0x02, 0x02) AM_READ(nascom1_port_02_r) - AM_RANGE(0x04, 0x07) AM_DEVREADWRITE("z80pio", z80pio_device, read, write ) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( nascom2_mem, AS_PROGRAM, 8, nascom2_state ) - AM_RANGE(0x0000, 0x07ff) AM_ROM // MONITOR - AM_RANGE(0x0800, 0x0bff) AM_RAM AM_SHARE("videoram") - AM_RANGE(0x0c00, 0x0fff) AM_RAM // WRAM - AM_RANGE(0xe000, 0xffff) AM_ROM AM_REGION("basic", 0) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( nascom2_io, AS_IO, 8, nascom2_state ) - ADDRESS_MAP_GLOBAL_MASK(0xff) - AM_RANGE(0x00, 0x00) AM_READWRITE(nascom1_port_00_r, nascom1_port_00_w) - AM_RANGE(0x01, 0x01) AM_READWRITE(nascom1_port_01_r, nascom1_port_01_w) - AM_RANGE(0x02, 0x02) AM_READ(nascom1_port_02_r) - AM_RANGE(0x04, 0x07) AM_DEVREADWRITE("z80pio", z80pio_device, read, write ) -ADDRESS_MAP_END - -static ADDRESS_MAP_START( nascom2c_mem, AS_PROGRAM, 8, nascom2_state ) - AM_RANGE(0xf000, 0xf7ff) AM_ROM AM_REGION("maincpu", 0) - AM_RANGE(0xf800, 0xfbff) AM_RAM AM_SHARE("videoram") - AM_RANGE(0xfc00, 0xffff) AM_RAM // WRAM -ADDRESS_MAP_END - - -//************************************************************************** -// INPUT PORTS -//************************************************************************** - -static INPUT_PORTS_START( nascom1 ) - PORT_START("KEY.0") - PORT_BIT(0x6f, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) - - 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('\xA3') - 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) - - PORT_START("KEY.8") - 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(0x58, IP_ACTIVE_LOW, IPT_UNUSED) - PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR(UCHAR_SHIFT_2) PORT_CHAR('@') -INPUT_PORTS_END - -static INPUT_PORTS_START( nascom2 ) - PORT_INCLUDE(nascom1) - - 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('_') - - PORT_MODIFY("KEY.8") - 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) - - // link switch on board - PORT_START("lsw1") - PORT_DIPNAME(0x0f, 0x00, "Restart address") - PORT_DIPLOCATION("LSW1:2,3,4,5") - 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("LSW1:2,3,4,5") - 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 -//************************************************************************** - -static MACHINE_CONFIG_START( nascom1, nascom1_state ) - // main cpu - MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz / 8) - MCFG_CPU_PROGRAM_MAP(nascom1_mem) - MCFG_CPU_IO_MAP(nascom1_io) - - // video hardware - MCFG_SCREEN_ADD("screen", RASTER) - MCFG_SCREEN_REFRESH_RATE(50) - MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */ - MCFG_SCREEN_SIZE(48 * 8, 16 * 16) - MCFG_SCREEN_VISIBLE_AREA(0, 48 * 8 - 1, 0, 16 * 16 - 1) - MCFG_SCREEN_UPDATE_DRIVER(nascom1_state, screen_update_nascom) - MCFG_SCREEN_PALETTE("palette") - - MCFG_GFXDECODE_ADD("gfxdecode", "palette", nascom1) - MCFG_PALETTE_ADD_BLACK_AND_WHITE("palette") - - // uart - MCFG_DEVICE_ADD( "hd6402", AY31015, 0 ) - MCFG_AY31015_TX_CLOCK(( XTAL_16MHz / 16 ) / 256) - MCFG_AY31015_RX_CLOCK(( XTAL_16MHz / 16 ) / 256) - MCFG_AY51013_READ_SI_CB(READ8(nascom_state, nascom1_hd6402_si)) - MCFG_AY51013_WRITE_SO_CB(WRITE8(nascom_state, nascom1_hd6402_so)) - - // cassette is connected to the uart - MCFG_CASSETTE_ADD("cassette") - - // pio - MCFG_DEVICE_ADD("z80pio", Z80PIO, XTAL_16MHz/8) - - // internal extra ram - MCFG_RAM_ADD(RAM_TAG) - MCFG_RAM_DEFAULT_SIZE("48K") - MCFG_RAM_EXTRA_OPTIONS("8K,16K,32K") - - // devices - MCFG_SNAPSHOT_ADD("snapshot", nascom_state, nascom1, "nas", 0.5) -MACHINE_CONFIG_END - -static MACHINE_CONFIG_DERIVED_CLASS( nascom2, nascom1, nascom2_state ) - MCFG_CPU_REPLACE("maincpu", Z80, XTAL_16MHz / 4) - MCFG_CPU_PROGRAM_MAP(nascom2_mem) - MCFG_CPU_IO_MAP(nascom2_io) - - // video hardware - MCFG_SCREEN_MODIFY("screen") - MCFG_SCREEN_SIZE(48 * 8, 16 * 14) - MCFG_SCREEN_VISIBLE_AREA(0, 48 * 8 - 1, 0, 16 * 14 - 1) - MCFG_SCREEN_UPDATE_DRIVER(nascom2_state, screen_update_nascom) - - MCFG_GFXDECODE_MODIFY("gfxdecode", nascom2) - - // generic sockets for ram/rom (todo: support ram here) - MCFG_GENERIC_SOCKET_ADD("socket1", generic_plain_slot, "nascom_socket") - MCFG_GENERIC_EXTENSIONS("bin,rom") - MCFG_GENERIC_LOAD(nascom2_state, socket1_load) - MCFG_GENERIC_SOCKET_ADD("socket2", generic_plain_slot, "nascom_socket") - MCFG_GENERIC_EXTENSIONS("bin,rom") - MCFG_GENERIC_LOAD(nascom2_state, socket2_load) - - MCFG_SOFTWARE_LIST_ADD("socket_list", "nascom_socket") - - // nasbus expansion bus - MCFG_NASBUS_ADD(NASBUS_TAG) - MCFG_NASBUS_RAM_DISABLE_HANDLER(WRITELINE(nascom2_state, ram_disable_w)) - MCFG_NASBUS_SLOT_ADD("nasbus1", nasbus_slot_cards, NULL) - MCFG_NASBUS_SLOT_ADD("nasbus2", nasbus_slot_cards, NULL) - MCFG_NASBUS_SLOT_ADD("nasbus3", nasbus_slot_cards, NULL) - MCFG_NASBUS_SLOT_ADD("nasbus4", nasbus_slot_cards, NULL) -MACHINE_CONFIG_END - -static MACHINE_CONFIG_DERIVED_CLASS( nascom2c, nascom2, nascom2_state ) - MCFG_CPU_MODIFY("maincpu") - MCFG_CPU_PROGRAM_MAP(nascom2c_mem) - - MCFG_DEVICE_REMOVE(RAM_TAG) - MCFG_RAM_ADD(RAM_TAG) - MCFG_RAM_DEFAULT_SIZE("60K") - - MCFG_DEVICE_MODIFY(NASBUS_TAG) - MCFG_NASBUS_RAM_DISABLE_HANDLER(WRITELINE(nascom2_state, ram_disable_cpm_w)) -MACHINE_CONFIG_END - - -//************************************************************************** -// ROM DEFINITIONS -//************************************************************************** - -ROM_START( nascom1 ) - ROM_REGION(0x0800, "maincpu", 0) - ROM_SYSTEM_BIOS(0, "T4", "NasBug T4") - ROMX_LOAD("nasbugt4.rom", 0x0000, 0x0800, CRC(f391df68) SHA1(00218652927afc6360c57e77d6a4fd32d4e34566), ROM_BIOS(1)) - ROM_SYSTEM_BIOS(1, "T1", "NasBug T1") - ROMX_LOAD("nasbugt1.rom", 0x0000, 0x0400, CRC(8ea07054) SHA1(3f9a8632826003d6ea59d2418674d0fb09b83a4c), ROM_BIOS(2)) - ROM_SYSTEM_BIOS(2, "T2", "NasBug T2") - ROMX_LOAD("nasbugt2.rom", 0x0000, 0x0400, CRC(e371b58a) SHA1(485b20a560b587cf9bb4208ba203b12b3841689b), ROM_BIOS(3)) - - ROM_REGION(0x0800, "gfx1", 0) - ROM_LOAD("nascom1.chr", 0x0000, 0x0800, CRC(33e92a04) SHA1(be6e1cc80e7f95a032759f7df19a43c27ff93a52)) -ROM_END - -ROM_START( nascom2 ) - ROM_REGION(0x0800, "maincpu", 0) - ROM_SYSTEM_BIOS(0, "NS3", "NasSys 3") - ROMX_LOAD("nassys3.rom", 0x0000, 0x0800, CRC(3da17373) SHA1(5fbda15765f04e4cd08cf95c8d82ce217889f240), ROM_BIOS(1)) - ROM_SYSTEM_BIOS(1, "NS1", "NasSys 1") - ROMX_LOAD("nassys1.rom", 0x0000, 0x0800, CRC(b6300716) SHA1(29da7d462ba3f569f70ed3ecd93b981f81c7adfa), ROM_BIOS(2)) - - ROM_REGION(0x2000, "basic", 0) - ROM_LOAD("basic.rom", 0x0000, 0x2000, CRC(5cb5197b) SHA1(c41669c2b6d6dea808741a2738426d97bccc9b07)) - - ROM_REGION(0x1000, "gfx1", 0) - ROM_LOAD("nascom1.chr", 0x0000, 0x0800, CRC(33e92a04) SHA1(be6e1cc80e7f95a032759f7df19a43c27ff93a52)) - ROM_LOAD("nasgra.chr", 0x0800, 0x0800, CRC(2bc09d32) SHA1(d384297e9b02cbcb283c020da51b3032ff62b1ae)) -ROM_END - -ROM_START( nascom2c ) - ROM_REGION(0x0800, "maincpu", 0) - ROM_LOAD("cpmboot.rom", 0x0000, 0x0800, CRC(44b67ffc) SHA1(60c8335f24798f8de7ad48a4cd03e56a60d87b63)) - - ROM_REGION(0x1000, "gfx1", 0) - ROM_LOAD("nascom1.chr", 0x0000, 0x0800, CRC(33e92a04) SHA1(be6e1cc80e7f95a032759f7df19a43c27ff93a52)) - ROM_LOAD("nasgra.chr", 0x0800, 0x0800, CRC(2bc09d32) SHA1(d384297e9b02cbcb283c020da51b3032ff62b1ae)) -ROM_END - - -//************************************************************************** -// GAME DRIVERS -//************************************************************************** - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */ -COMP( 1977, nascom1, 0, 0, nascom1, nascom1, nascom_state, nascom, "Nascom Microcomputers", "Nascom 1", MACHINE_NO_SOUND_HW ) -COMP( 1979, nascom2, 0, 0, nascom2, nascom2, nascom2_state, nascom2, "Nascom Microcomputers", "Nascom 2", MACHINE_NO_SOUND_HW ) -COMP( 1980, nascom2c, nascom2, 0, nascom2c, nascom2c, nascom2_state, nascom2c, "Nascom Microcomputers", "Nascom 2 (CP/M)", MACHINE_NO_SOUND_HW ) |