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path: root/src/devices/machine/bankdev.cpp
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// license:BSD-3-Clause
// copyright-holders:smf
#include "emu.h"
#include "bankdev.h"

// device type definition
const device_type ADDRESS_MAP_BANK = &device_creator<address_map_bank_device>;

address_map_bank_device::address_map_bank_device( const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock )
	: device_t(mconfig, ADDRESS_MAP_BANK, "Address Map Bank", tag, owner, clock, "address_map_bank", __FILE__),
		device_memory_interface(mconfig, *this),
		m_endianness(ENDIANNESS_NATIVE),
		m_databus_width(0),
		m_addrbus_width(32),
		m_stride(1),
		m_program(nullptr),
		m_offset(0)
{
}

DEVICE_ADDRESS_MAP_START(amap8, 8, address_map_bank_device)
	AM_RANGE(0x00000000, 0xffffffff) AM_READWRITE(read8, write8)
ADDRESS_MAP_END

DEVICE_ADDRESS_MAP_START(amap16, 16, address_map_bank_device)
	AM_RANGE(0x00000000, 0xffffffff) AM_READWRITE(read16, write16)
ADDRESS_MAP_END

DEVICE_ADDRESS_MAP_START(amap32, 32, address_map_bank_device)
	AM_RANGE(0x00000000, 0xffffffff) AM_READWRITE(read32, write32)
ADDRESS_MAP_END

DEVICE_ADDRESS_MAP_START(amap64, 64, address_map_bank_device)
	AM_RANGE(0x00000000, 0xffffffff) AM_READWRITE(read64, write64)
ADDRESS_MAP_END

WRITE8_MEMBER(address_map_bank_device::write8)
{
	m_program->set_debugger_access(space.debugger_access());
	m_program->write_byte(m_offset + offset, data);
}

WRITE16_MEMBER(address_map_bank_device::write16)
{
	m_program->set_debugger_access(space.debugger_access());
	m_program->write_word(m_offset + (offset * 2), data, mem_mask);
}

WRITE32_MEMBER(address_map_bank_device::write32)
{
	m_program->set_debugger_access(space.debugger_access());
	m_program->write_dword(m_offset + (offset * 4), data, mem_mask);
}

WRITE64_MEMBER(address_map_bank_device::write64)
{
	m_program->set_debugger_access(space.debugger_access());
	m_program->write_qword(m_offset + (offset * 8), data, mem_mask);
}

READ8_MEMBER(address_map_bank_device::read8)
{
	m_program->set_debugger_access(space.debugger_access());
	return m_program->read_byte(m_offset + offset);
}

READ16_MEMBER(address_map_bank_device::read16)
{
	m_program->set_debugger_access(space.debugger_access());
	return m_program->read_word(m_offset + (offset * 2), mem_mask);
}

READ32_MEMBER(address_map_bank_device::read32)
{
	m_program->set_debugger_access(space.debugger_access());
	return m_program->read_dword(m_offset + (offset * 4), mem_mask);
}

READ64_MEMBER(address_map_bank_device::read64)
{
	m_program->set_debugger_access(space.debugger_access());
	return m_program->read_qword(m_offset + (offset * 8), mem_mask);
}

void address_map_bank_device::device_config_complete()
{
	m_program_config = address_space_config( "program", m_endianness, m_databus_width, m_addrbus_width );
}

void address_map_bank_device::device_start()
{
	m_program = &space(AS_PROGRAM);

	save_item(NAME(m_offset));
}

void address_map_bank_device::set_bank(offs_t bank)
{
	m_offset = bank * m_stride;
}
n class="n">required_ioport m_io_joy; required_device<centronics_device> m_centronics; }; void spc1000_state::spc1000_mem(address_map &map) { map.unmap_value_high(); map(0x0000, 0x7fff).bankr("bank1").bankw("bank2"); map(0x8000, 0xffff).bankr("bank3").bankw("bank4"); } WRITE8_MEMBER(spc1000_state::iplk_w) { m_IPLK = m_IPLK ? 0 : 1; membank("bank1")->set_entry(m_IPLK); membank("bank3")->set_entry(m_IPLK); } READ8_MEMBER(spc1000_state::iplk_r) { m_IPLK = m_IPLK ? 0 : 1; membank("bank1")->set_entry(m_IPLK); membank("bank3")->set_entry(m_IPLK); return 0; } WRITE8_MEMBER( spc1000_state::cass_w ) { attotime time = machine().scheduler().time(); m_cass->output(BIT(data, 0) ? -1.0 : 1.0); if (BIT(data, 1) && (time - m_time).as_attoseconds()/ATTOSECONDS_PER_MICROSECOND > 100) { m_cass->change_state((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED ? CASSETTE_MOTOR_ENABLED : CASSETTE_MOTOR_DISABLED, CASSETTE_MASK_MOTOR); m_time = time; } m_centronics->write_strobe(BIT(data, 2) ? true : false); } WRITE8_MEMBER(spc1000_state::gmode_w) { m_GMODE = data; // m_GMODE layout: CSS|NA|PS2|PS1|~A/G|GM0|GM1|NA // [PS2,PS1] is used to set screen 0/1 pages m_vdg->gm1_w(BIT(data, 1)); m_vdg->gm0_w(BIT(data, 2)); m_vdg->ag_w(BIT(data, 3)); m_vdg->css_w(BIT(data, 7)); m_page = ((BIT(data, 5) << 1) | BIT(data, 4)) * 0x200; } READ8_MEMBER(spc1000_state::gmode_r) { return m_GMODE; } READ8_MEMBER( spc1000_state::keyboard_r ) { // most games just read kb in $8000-$8009 but a few of them // (e.g. Toiler Adventure II and Vela) use mirrored addr instead offset &= 0xf; if (offset <= 9) return m_io_kb[offset]->read(); else return 0xff; } void spc1000_state::spc1000_io(address_map &map) { map.unmap_value_high(); map(0x0000, 0x1fff).ram().share("videoram"); map(0x2000, 0x3fff).rw(FUNC(spc1000_state::gmode_r), FUNC(spc1000_state::gmode_w)); map(0x4000, 0x4000).w("ay8910", FUNC(ay8910_device::address_w)); map(0x4001, 0x4001).rw("ay8910", FUNC(ay8910_device::data_r), FUNC(ay8910_device::data_w)); map(0x6000, 0x6000).w(FUNC(spc1000_state::cass_w)); map(0x8000, 0x9fff).r(FUNC(spc1000_state::keyboard_r)); map(0xa000, 0xa000).rw(FUNC(spc1000_state::iplk_r), FUNC(spc1000_state::iplk_w)); map(0xc000, 0xdfff).rw("ext1", FUNC(spc1000_exp_device::read), FUNC(spc1000_exp_device::write)); } /* Input ports */ static INPUT_PORTS_START( spc1000 ) PORT_START("LINE.0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift") PORT_CODE(KEYCODE_RSHIFT) PORT_CODE(KEYCODE_LSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Ctrl") PORT_CODE(KEYCODE_RCONTROL) PORT_CODE(KEYCODE_LCONTROL) PORT_CHAR(UCHAR_SHIFT_2) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Break") PORT_CODE(KEYCODE_PAUSE) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Graph") PORT_CODE(KEYCODE_LALT) PORT_CODE(KEYCODE_RALT) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_UNUSED) PORT_START("LINE.1") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("^ ~") PORT_CODE(KEYCODE_TILDE) PORT_CHAR('^') PORT_CHAR('~') PORT_CHAR(0x1e) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Home") PORT_CODE(KEYCODE_HOME) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Space") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("C") PORT_CODE(KEYCODE_C) PORT_CHAR('c') PORT_CHAR('C') PORT_CHAR(0x03) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("A") PORT_CODE(KEYCODE_A) PORT_CHAR('a') PORT_CHAR('A') PORT_CHAR(0x01) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Q") PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q') PORT_CHAR(0x16) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("1 !") PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!') PORT_START("LINE.2") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Caps") PORT_CODE(KEYCODE_CAPSLOCK) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Z") PORT_CODE(KEYCODE_Z) PORT_CHAR('z') PORT_CHAR('Z') PORT_CHAR(0x1a) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("] }") PORT_CODE(KEYCODE_CLOSEBRACE) PORT_CHAR(']') PORT_CHAR('}') PORT_CHAR(0x1d) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("V") PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V') PORT_CHAR(0x16) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("S") PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S') PORT_CHAR(0x13) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("W") PORT_CODE(KEYCODE_W) PORT_CHAR('w') PORT_CHAR('W') PORT_CHAR(0x17) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("2 \"") PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_CHAR('\"') PORT_START("LINE.3") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Del") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_CHAR(0x12) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ESC") PORT_CODE(KEYCODE_ESC) PORT_CHAR(0x1b) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("[ {") PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('[') PORT_CHAR('{') PORT_CHAR(0x1b) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("B") PORT_CODE(KEYCODE_B) PORT_CHAR('b') PORT_CHAR('B') PORT_CHAR(0x02) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("D") PORT_CODE(KEYCODE_D) PORT_CHAR('d') PORT_CHAR('D') PORT_CHAR(0x04) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("E") PORT_CODE(KEYCODE_E) PORT_CHAR('e') PORT_CHAR('E') PORT_CHAR(0x05) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("3 #") PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_CHAR('#') PORT_START("LINE.4") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right") PORT_CODE(KEYCODE_RIGHT) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("\\ |") PORT_CODE(KEYCODE_BACKSLASH) PORT_CHAR('\\') PORT_CHAR('|') PORT_CHAR(0x1c) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("N") PORT_CODE(KEYCODE_N) PORT_CHAR('n') PORT_CHAR('N') PORT_CHAR(0x0e) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F") PORT_CODE(KEYCODE_F) PORT_CHAR('f') PORT_CHAR('F') PORT_CHAR(0x06) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("R") PORT_CODE(KEYCODE_R) PORT_CHAR('r') PORT_CHAR('R') PORT_CHAR(0x12) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("4 $") PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_CHAR('$') PORT_START("LINE.5") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F1") PORT_CODE(KEYCODE_F1) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Left") PORT_CODE(KEYCODE_LEFT) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("M") PORT_CODE(KEYCODE_M) PORT_CHAR('m') PORT_CHAR('M') PORT_CHAR(0x0d) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("G") PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G') PORT_CHAR(0x07) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("T") PORT_CODE(KEYCODE_T) PORT_CHAR('t') PORT_CHAR('T') PORT_CHAR(0x14) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("5 %") PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_CHAR('%') PORT_START("LINE.6") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F2") PORT_CODE(KEYCODE_F2) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("@ `") PORT_CODE(KEYCODE_EQUALS) PORT_CHAR('@') PORT_CHAR('`') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("X") PORT_CODE(KEYCODE_X) PORT_CHAR('x') PORT_CHAR('X') PORT_CHAR(0x18) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(", <") PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("H") PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H') PORT_CHAR(0x08) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Y") PORT_CODE(KEYCODE_Y) PORT_CHAR('y') PORT_CHAR('Y') PORT_CHAR(0x19) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("6 &") PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_CHAR('&') PORT_START("LINE.7") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F3") PORT_CODE(KEYCODE_F3) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Up") PORT_CODE(KEYCODE_UP) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("P") PORT_CODE(KEYCODE_P) PORT_CHAR('p') PORT_CHAR('P') PORT_CHAR(0x10) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(". >") PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("J") PORT_CODE(KEYCODE_J) PORT_CHAR('j') PORT_CHAR('J') PORT_CHAR(0x0a) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("U") PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U') PORT_CHAR(0x15) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("7 '") PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_CHAR('\'') PORT_START("LINE.8") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F4") PORT_CODE(KEYCODE_F4) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Down") PORT_CODE(KEYCODE_DOWN) PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME(": *") PORT_CODE(KEYCODE_QUOTE) PORT_CHAR(':') PORT_CHAR('*') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("/ ?") PORT_CODE(KEYCODE_SLASH) PORT_CHAR('/') PORT_CHAR('?') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("K") PORT_CODE(KEYCODE_K) PORT_CHAR('k') PORT_CHAR('K') PORT_CHAR(0x0b) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("I") PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I') PORT_CHAR(0x09) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("8 (") PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_CHAR('(') PORT_START("LINE.9") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_START) PORT_NAME("IPL") PORT_CODE(KEYCODE_END) PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F5") PORT_CODE(KEYCODE_F5) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("- =") PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('=') PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("0") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("; +") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR('+') PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("L") PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L') PORT_CHAR(0x0c) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("O") PORT_CODE(KEYCODE_O) PORT_CHAR('o') PORT_CHAR('O') PORT_CHAR(0x0e) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("9 )") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_CHAR(')') PORT_START("JOY") PORT_BIT(0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT(0x02, IP_ACTIVE_HIGH, IPT_JOYSTICK_RIGHT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x04, IP_ACTIVE_HIGH, IPT_JOYSTICK_LEFT ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x08, IP_ACTIVE_HIGH, IPT_JOYSTICK_UP ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x10, IP_ACTIVE_HIGH, IPT_JOYSTICK_DOWN ) PORT_8WAY PORT_PLAYER(1) PORT_BIT(0x20, IP_ACTIVE_HIGH, IPT_UNUSED) // Button 2? PORT_BIT(0xc0, IP_ACTIVE_HIGH, IPT_UNUSED) // Cassette related INPUT_PORTS_END void spc1000_state::machine_start() { uint8_t *mem = memregion("maincpu")->base(); uint8_t *ram = m_ram->pointer(); // configure and intialize banks 1 & 3 (read banks) membank("bank1")->configure_entry(0, ram); membank("bank1")->configure_entry(1, mem); membank("bank3")->configure_entry(0, ram + 0x8000); membank("bank3")->configure_entry(1, mem); membank("bank1")->set_entry(1); membank("bank3")->set_entry(1); // intialize banks 2 & 4 (write banks) membank("bank2")->set_base(ram); membank("bank4")->set_base(ram + 0x8000); m_time = machine().scheduler().time(); } void spc1000_state::machine_reset() { m_work_ram = make_unique_clear<uint8_t[]>(0x10000); m_IPLK = 1; } READ8_MEMBER(spc1000_state::mc6847_videoram_r) { if (offset == ~0) return 0xff; // m_GMODE layout: CSS|NA|PS2|PS1|~A/G|GM0|GM1|NA if (!BIT(m_GMODE, 3)) { // text mode (~A/G set to A) uint8_t data = m_p_videoram[offset + m_page + 0x800]; m_vdg->inv_w(BIT(data, 0)); m_vdg->css_w(BIT(data, 1)); m_vdg->as_w (BIT(data, 2)); m_vdg->intext_w(BIT(data, 3)); return m_p_videoram[offset + m_page]; } else { // graphics mode: uses full 6KB of VRAM return m_p_videoram[offset]; } } READ8_MEMBER( spc1000_state::porta_r ) { uint8_t data = 0x3f; data |= (m_cass->input() > 0.0038) ? 0x80 : 0; data |= ((m_cass->get_state() & CASSETTE_MASK_UISTATE) == CASSETTE_STOPPED || ((m_cass->get_state() & CASSETTE_MASK_MOTOR) == CASSETTE_MOTOR_DISABLED)) ? 0x40 : 0; data &= ~(m_io_joy->read() & 0x3f); data &= ~((m_centronics_busy == 0)<< 5); return data; } // irq is inverted in emulation, so we need this trampoline WRITE_LINE_MEMBER( spc1000_state::irq_w ) { m_maincpu->set_input_line(0, state ? CLEAR_LINE : HOLD_LINE); } //------------------------------------------------- // address maps //------------------------------------------------- void spc1000_exp(device_slot_interface &device) { device.option_add("fdd", SPC1000_FDD_EXP); device.option_add("vdp", SPC1000_VDP_EXP); } MACHINE_CONFIG_START(spc1000_state::spc1000) /* basic machine hardware */ MCFG_DEVICE_ADD("maincpu",Z80, XTAL(4'000'000)) MCFG_DEVICE_PROGRAM_MAP(spc1000_mem) MCFG_DEVICE_IO_MAP(spc1000_io) /* video hardware */ SCREEN(config, "screen", SCREEN_TYPE_RASTER); MC6847_NTSC(config, m_vdg, XTAL(3'579'545)); m_vdg->set_screen("screen"); m_vdg->fsync_wr_callback().set(FUNC(spc1000_state::irq_w)); m_vdg->input_callback().set(FUNC(spc1000_state::mc6847_videoram_r)); m_vdg->set_get_char_rom(FUNC(spc1000_state::get_char_rom)); m_vdg->set_get_fixed_mode(mc6847_ntsc_device::MODE_GM2); // other lines not connected /* sound hardware */ SPEAKER(config, "mono").front_center(); ay8910_device &ay8910(AY8910(config, "ay8910", XTAL(4'000'000) / 1)); ay8910.port_a_read_callback().set(FUNC(spc1000_state::porta_r)); ay8910.port_b_write_callback().set("cent_data_out", FUNC(output_latch_device::bus_w)); ay8910.add_route(ALL_OUTPUTS, "mono", 1.00); WAVE(config, "wave", m_cass).add_route(ALL_OUTPUTS, "mono", 0.05); MCFG_DEVICE_ADD("ext1", SPC1000_EXP_SLOT, 0) MCFG_DEVICE_SLOT_INTERFACE(spc1000_exp, nullptr, false) CENTRONICS(config, m_centronics, centronics_devices, "printer"); m_centronics->busy_handler().set(FUNC(spc1000_state::centronics_busy_w)); output_latch_device &cent_data_out(OUTPUT_LATCH(config, "cent_data_out")); m_centronics->set_output_latch(cent_data_out); INPUT_BUFFER(config, "cent_status_in"); CASSETTE(config, m_cass); m_cass->set_formats(spc1000_cassette_formats); m_cass->set_default_state(CASSETTE_STOPPED | CASSETTE_SPEAKER_ENABLED | CASSETTE_MOTOR_DISABLED); m_cass->set_interface("spc1000_cass"); MCFG_SOFTWARE_LIST_ADD("cass_list", "spc1000_cass") /* internal ram */ RAM(config, RAM_TAG).set_default_size("64K"); MACHINE_CONFIG_END /* ROM definition */ ROM_START( spc1000 ) ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF) ROM_LOAD("spcall.rom", 0x0000, 0x8000, CRC(240426be) SHA1(8eb32e147c17a6d0f947b8bb3c6844750a7b64a8)) ROM_END #if 0 ROM_START( spc1000 ) ROM_REGION(0x10000, "maincpu", ROMREGION_ERASEFF) ROM_LOAD("spcall.rom", 0x0000, 0x8000, CRC(2fbb6eca) SHA1(cc9a076b0f00d54b2aec31f1f558b10f43ef61c8)) /// more roms to come... ROM_END #endif /* Driver */ // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1982, spc1000, 0, 0, spc1000, spc1000, spc1000_state, empty_init, "Samsung", "SPC-1000", 0 )