diff --git a/src/mame/drivers/einstein.cpp b/src/mame/drivers/einstein.cpp index b14aebedeb6..f9948eb9304 100644 --- a/src/mame/drivers/einstein.cpp +++ b/src/mame/drivers/einstein.cpp @@ -1,12 +1,13 @@ // license: GPL-2.0+ -// copyright-holders: Kevin Thacker, Dirk Best, Phill Harvey-Smith +// copyright-holders: Kevin Thacker, Dirk Best, Phill Harvey-Smith, Nigel Barnes // thanks-to: Chris Coxall, Andrew Dunipace /****************************************************************************** Tatung Einstein - TODO: - - Einstein 256 support (need bios dump) + TODO: Einstein 256 + - interrupt priorities + - VAMP interface (probably never used) ******************************************************************************/ @@ -18,6 +19,7 @@ #include "bus/einstein/pipe/pipe.h" #include "bus/einstein/userport/userport.h" #include "bus/rs232/rs232.h" +#include "imagedev/cassette.h" #include "imagedev/floppy.h" #include "machine/adc0844.h" #include "machine/i8251.h" @@ -28,6 +30,7 @@ #include "machine/z80ctc.h" #include "machine/z80pio.h" #include "video/tms9928a.h" +#include "video/v9938.h" #include "sound/ay8910.h" #include "screen.h" #include "softlist.h" @@ -67,6 +70,7 @@ public: m_keyboard_daisy(*this, "keyboard_daisy"), m_adc_daisy(*this, "adc_daisy"), m_fire_daisy(*this, "fire_daisy"), + m_vdp_daisy(*this, "vdp_daisy"), m_pipe(*this, "pipe"), m_fdc(*this, IC_I042), m_ram(*this, RAM_TAG), @@ -77,17 +81,22 @@ public: m_bank1(*this, "bank1"), m_bank2(*this, "bank2"), m_bank3(*this, "bank3"), - m_floppy{ { *this, IC_I042 ":0" }, { *this, IC_I042 ":1" }, { *this, IC_I042 ":2" }, { *this, IC_I042 ":3" } }, + m_floppy(*this, IC_I042 ":%u", 0), + m_cassette(*this, "cassette"), m_line(*this, "LINE%u", 0), m_extra(*this, "EXTRA"), m_buttons(*this, "BUTTONS"), + m_porta_joy(*this, "PORTA_JOY"), + m_portb_joy(*this, "PORTB_JOY"), + m_dips(*this, "DIPS"), m_rom_enabled(0), m_keyboard_line(0), m_keyboard_data(0xff), - m_centronics_busy(0), m_centronics_perror(0), m_centronics_fault(0), m_strobe(-1), + m_centronics_ack(0), m_centronics_busy(0), m_centronics_perror(0), m_centronics_fault(0), m_strobe(-1), m_int(0) {} void einstein(machine_config &config); + void einst256(machine_config &config); DECLARE_INPUT_CHANGED_MEMBER(joystick_button); @@ -104,15 +113,29 @@ private: DECLARE_WRITE8_MEMBER(kybint_msk_w); DECLARE_WRITE8_MEMBER(adcint_msk_w); DECLARE_WRITE8_MEMBER(fireint_msk_w); + DECLARE_WRITE8_MEMBER(evdpint_msk_w); DECLARE_WRITE8_MEMBER(drsel_w); + DECLARE_WRITE_LINE_MEMBER(write_centronics_ack); DECLARE_WRITE_LINE_MEMBER(write_centronics_busy); DECLARE_WRITE_LINE_MEMBER(write_centronics_perror); DECLARE_WRITE_LINE_MEMBER(write_centronics_fault); DECLARE_WRITE_LINE_MEMBER(ardy_w); TIMER_DEVICE_CALLBACK_MEMBER(strobe_callback); + DECLARE_READ8_MEMBER(system_r); + DECLARE_READ8_MEMBER(porta_r); + DECLARE_WRITE8_MEMBER(porta_w); + DECLARE_WRITE8_MEMBER(porta_int_w); + DECLARE_READ8_MEMBER(portb_r); + DECLARE_WRITE8_MEMBER(portb_w); + DECLARE_READ8_MEMBER(pseudo_adc_r); + DECLARE_WRITE8_MEMBER(pseudo_adc_w); + DECLARE_READ8_MEMBER(alpha_lock_r); + DECLARE_WRITE8_MEMBER(alpha_lock_w); + void einstein_io(address_map &map); void einstein_mem(address_map &map); + void einst256_io(address_map &map); virtual void machine_start() override; virtual void machine_reset() override; @@ -123,7 +146,8 @@ private: required_device m_keyboard_daisy; required_device m_adc_daisy; required_device m_fire_daisy; - required_device m_pipe; + optional_device m_vdp_daisy; + optional_device m_pipe; required_device m_fdc; required_device m_ram; required_device m_psg; @@ -133,20 +157,30 @@ private: required_memory_bank m_bank1; required_memory_bank m_bank2; required_memory_bank m_bank3; - required_device m_floppy[4]; + optional_device_array m_floppy; + optional_device m_cassette; required_ioport_array<8> m_line; required_ioport m_extra; - required_ioport m_buttons; + optional_ioport m_buttons; + optional_ioport m_porta_joy; + optional_ioport m_portb_joy; + optional_ioport m_dips; int m_rom_enabled; uint8_t m_keyboard_line; uint8_t m_keyboard_data; + uint8_t m_porta_out; + uint8_t m_porta_int; + uint8_t m_portb_out; + uint8_t m_pseudo_adc; + int m_centronics_ack; int m_centronics_busy; int m_centronics_perror; int m_centronics_fault; int m_strobe; + int m_alpha_lock_led; int m_int; }; @@ -158,7 +192,12 @@ private: INPUT_CHANGED_MEMBER( einstein_state::joystick_button ) { - int button_down = (m_buttons->read() & 0x03) != 0x03; + int button_down; + if (m_buttons) + button_down = (m_buttons->read() & 0x03) != 0x03; + else + button_down = (m_porta_joy->read() & m_portb_joy->read() & 0x10) != 0x10; + m_fire_daisy->int_w(button_down ? ASSERT_LINE : CLEAR_LINE); } @@ -222,10 +261,10 @@ WRITE8_MEMBER(einstein_state::drsel_w) floppy_image_device *floppy = nullptr; - if (BIT(data, 0)) floppy = m_floppy[0]->get_device(); - if (BIT(data, 1)) floppy = m_floppy[1]->get_device(); - if (BIT(data, 2)) floppy = m_floppy[2]->get_device(); - if (BIT(data, 3)) floppy = m_floppy[3]->get_device(); + if (BIT(data, 0)) floppy = m_floppy[0] ? m_floppy[0]->get_device() : nullptr; + if (BIT(data, 1)) floppy = m_floppy[1] ? m_floppy[1]->get_device() : nullptr; + if (BIT(data, 2)) floppy = m_floppy[2] ? m_floppy[2]->get_device() : nullptr; + if (BIT(data, 3)) floppy = m_floppy[3] ? m_floppy[3]->get_device() : nullptr; if (floppy) floppy->ss_w(BIT(data, 4)); @@ -238,6 +277,11 @@ WRITE8_MEMBER(einstein_state::drsel_w) CENTRONICS ***************************************************************************/ +WRITE_LINE_MEMBER(einstein_state::write_centronics_ack) +{ + m_centronics_ack = state; +} + WRITE_LINE_MEMBER( einstein_state::write_centronics_busy ) { m_centronics_busy = state; @@ -284,6 +328,16 @@ static const z80_daisy_config einstein_daisy_chain[] = { nullptr } }; +static const z80_daisy_config einst256_daisy_chain[] = +{ + { "keyboard_daisy" }, + { IC_I058 }, + { "adc_daisy" }, + { "vdp_daisy" }, + { "fire_daisy" }, + { nullptr } +}; + template WRITE_LINE_MEMBER( einstein_state::int_w ) { int old = m_int; @@ -294,7 +348,7 @@ template WRITE_LINE_MEMBER( einstein_state::int_w ) if (!old) { m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE); - m_pipe->host_int_w(ASSERT_LINE); + if (m_pipe) m_pipe->host_int_w(ASSERT_LINE); } } else @@ -303,7 +357,7 @@ template WRITE_LINE_MEMBER( einstein_state::int_w ) if (old && !m_int) { m_maincpu->set_input_line(INPUT_LINE_IRQ0, CLEAR_LINE); - m_pipe->host_int_w(CLEAR_LINE); + if (m_pipe) m_pipe->host_int_w(CLEAR_LINE); } } } @@ -316,7 +370,10 @@ READ8_MEMBER( einstein_state::kybint_msk_r ) m_keyboard_daisy->int_w(CLEAR_LINE); /* bit 0 and 1: fire buttons on the joysticks */ - data |= m_buttons->read() & 0x03; + if (m_buttons) + data |= m_buttons->read() & 0x03; + else + data |= (m_portb_joy->read() & 0x10) >> 4 | (m_porta_joy->read() & 0x10) >> 3; /* bit 2 to 4: printer status */ data |= m_centronics_busy << 2; @@ -350,6 +407,13 @@ WRITE8_MEMBER( einstein_state::fireint_msk_w ) m_fire_daisy->mask_w(BIT(data, 0)); } +WRITE8_MEMBER(einstein_state::evdpint_msk_w) +{ + logerror("EVDP interrupt %s\n", BIT(data, 0) ? "disabled" : "enabled"); + logerror("Printer STROBE %s\n", BIT(data, 1) ? "disabled" : "enabled"); + m_vdp_daisy->mask_w(BIT(data, 0)); +} + /*************************************************************************** MACHINE EMULATION @@ -404,6 +468,128 @@ void einstein_state::machine_reset() m_fire_daisy->mask_w(1); m_strobe = -1; + + // enable Alpha Lock LED + m_alpha_lock_led = 1; +} + + +/*************************************************************************** + 256 MACHINE EMULATION +***************************************************************************/ + +READ8_MEMBER(einstein_state::system_r) +{ + uint8_t data = 0; + + // b0 1 = Alpha Lock key pressed + data |= !BIT(m_line[0]->read(), 4); + // b1 1 = ROM enabled + data |= m_rom_enabled << 1; + // b2 Dipswitch 1 + // b3 Dipswitch 2 + // b4 Dipswitch 3 + // b5 Dipswitch 4 + data |= (m_dips->read() & 0x0f) << 2; + // b6 0 = mouse connected + data |= 0x40; + // b7 cassette input + data |= (m_cassette->input() > 0.0 ? 1 : 0) << 7; + + return data; +} + +READ8_MEMBER(einstein_state::porta_r) +{ + uint8_t data = 0; + + data |= m_porta_joy->read() & 0x1f; + data |= m_centronics_perror << 5; + data |= m_centronics_fault << 6; + + return data; +} + +WRITE8_MEMBER(einstein_state::porta_w) +{ + m_centronics->write_data0(BIT(data, 0)); + m_centronics->write_data1(BIT(data, 1)); + m_centronics->write_data2(BIT(data, 2)); + m_centronics->write_data3(BIT(data, 3)); + m_centronics->write_strobe(BIT(data, 4)); +} + +WRITE8_MEMBER(einstein_state::porta_int_w) +{ + // TODO: Implement Port A interrupts (not used for printing!) + logerror("Port A interrupt %s\n", BIT(data, 7) ? "enabled" : "disabled"); + m_porta_int = data; +} + +READ8_MEMBER(einstein_state::portb_r) +{ + uint8_t data = 0; + + data |= m_portb_joy->read() & 0x1f; + data |= m_centronics_busy << 5; + data |= m_centronics_ack << 6; + + return data; +} + +WRITE8_MEMBER(einstein_state::portb_w) +{ + m_centronics->write_data4(BIT(data, 0)); + m_centronics->write_data5(BIT(data, 1)); + m_centronics->write_data6(BIT(data, 2)); + m_centronics->write_data7(BIT(data, 3)); +} + +READ8_MEMBER(einstein_state::pseudo_adc_r) +{ + uint8_t data = 0x7f; // centre + + uint8_t port = BIT(m_pseudo_adc, 1) ? m_porta_joy->read() : m_portb_joy->read(); + + m_adc_daisy->int_w(CLEAR_LINE); + + switch (m_pseudo_adc & 0x05) + { + case 4: + switch (port & 0x0c) + { + case 0x04: data = 0xff; break; // right + case 0x08: data = 0x00; break; // left + } + break; + case 5: + switch (port & 0x03) + { + case 0x01: data = 0x00; break; // down + case 0x02: data = 0xff; break; // up + } + break; + } + return data; +} + +WRITE8_MEMBER(einstein_state::pseudo_adc_w) +{ + m_pseudo_adc = data; + m_adc_daisy->int_w(ASSERT_LINE); +} + +READ8_MEMBER(einstein_state::alpha_lock_r) +{ + m_alpha_lock_led ^= 1; + output().set_value("alpha_lock_led", m_alpha_lock_led); + return 0xff; +} + +WRITE8_MEMBER(einstein_state::alpha_lock_w) +{ + m_alpha_lock_led ^= 1; + output().set_value("alpha_lock_led", m_alpha_lock_led); } @@ -437,17 +623,41 @@ void einstein_state::einstein_io(address_map &map) map(0x38, 0x38).mirror(0xff07).rw("adc", FUNC(adc0844_device::read), FUNC(adc0844_device::write)); } +void einstein_state::einst256_io(address_map &map) +{ + map.unmap_value_high(); + map(0x00, 0x00).mirror(0xff04).rw(FUNC(einstein_state::reset_r), FUNC(einstein_state::reset_w)); + map(0x02, 0x02).mirror(0xff04).rw(m_psg, FUNC(ay8910_device::data_r), FUNC(ay8910_device::address_w)); + map(0x03, 0x03).mirror(0xff04).w(m_psg, FUNC(ay8910_device::data_w)); + map(0x08, 0x0b).mirror(0xff04).rw("v9938", FUNC(v9938_device::read), FUNC(v9938_device::write)); + map(0x10, 0x11).mirror(0xff06).rw(IC_I060, FUNC(i8251_device::read), FUNC(i8251_device::write)); + map(0x18, 0x1b).mirror(0xff04).rw(m_fdc, FUNC(wd1770_device::read), FUNC(wd1770_device::write)); + map(0x20, 0x20).mirror(0xff00).rw(FUNC(einstein_state::kybint_msk_r), FUNC(einstein_state::kybint_msk_w)); + map(0x21, 0x21).mirror(0xff00).w(FUNC(einstein_state::adcint_msk_w)); + map(0x22, 0x22).mirror(0xff00).rw(FUNC(einstein_state::alpha_lock_r), FUNC(einstein_state::alpha_lock_w)); + map(0x23, 0x23).mirror(0xff00).w(FUNC(einstein_state::drsel_w)); + map(0x24, 0x24).mirror(0xff00).rw(FUNC(einstein_state::rom_r), FUNC(einstein_state::rom_w)); + map(0x25, 0x25).mirror(0xff00).w(FUNC(einstein_state::fireint_msk_w)); + map(0x26, 0x26).mirror(0xff00).r(FUNC(einstein_state::system_r)); + map(0x28, 0x2b).mirror(0xff04).rw(IC_I058, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); + map(0x30, 0x30).mirror(0xff00).rw(FUNC(einstein_state::porta_r), FUNC(einstein_state::porta_w)); + map(0x31, 0x31).mirror(0xff00).w(FUNC(einstein_state::porta_int_w)); + map(0x32, 0x32).mirror(0xff00).rw(FUNC(einstein_state::portb_r), FUNC(einstein_state::portb_w)); + map(0x38, 0x38).mirror(0xff07).rw(FUNC(einstein_state::pseudo_adc_r), FUNC(einstein_state::pseudo_adc_w)); + map(0x80, 0x80).mirror(0xff00).w(FUNC(einstein_state::evdpint_msk_w)); +} + /*************************************************************************** INPUT PORTS ***************************************************************************/ -static INPUT_PORTS_START( einstein ) +static INPUT_PORTS_START( keyboard ) PORT_START("LINE0") PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("BREAK") PORT_CODE(KEYCODE_LALT) - PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("?") PORT_CODE(KEYCODE_1_PAD) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_UNUSED) PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F0") PORT_CODE(KEYCODE_F1) - PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("?") PORT_CODE(KEYCODE_3_PAD) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("F7") PORT_CODE(KEYCODE_F8) PORT_CHAR(UCHAR_MAMEKEY(F7)) PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CAPS LOCK") PORT_CODE(KEYCODE_CAPSLOCK) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ENTER") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SPACE") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') @@ -528,6 +738,10 @@ static INPUT_PORTS_START( einstein ) PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("GRPH") PORT_CODE(KEYCODE_F8) PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("CONTROL") PORT_CODE(KEYCODE_LCONTROL) PORT_CODE(KEYCODE_RCONTROL) PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_LSHIFT) PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) +INPUT_PORTS_END + +static INPUT_PORTS_START( einstein ) + PORT_INCLUDE(keyboard) // fire buttons for analogue joysticks PORT_START("BUTTONS") @@ -556,6 +770,40 @@ static INPUT_PORTS_START( einstein ) PORT_REVERSE INPUT_PORTS_END +static INPUT_PORTS_START( einst256 ) + PORT_INCLUDE(keyboard) + + PORT_MODIFY("LINE0") + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("ALPHA LOCK") PORT_CODE(KEYCODE_CAPSLOCK) + + PORT_START("PORTA_JOY") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(1) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(1) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(1) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(1) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(1) PORT_CHANGED_MEMBER(DEVICE_SELF, einstein_state, joystick_button, nullptr) + + PORT_START("PORTB_JOY") + PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP) PORT_PLAYER(2) + PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN) PORT_PLAYER(2) + PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT) PORT_PLAYER(2) + PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT) PORT_PLAYER(2) + PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_BUTTON1) PORT_PLAYER(2) PORT_CHANGED_MEMBER(DEVICE_SELF, einstein_state, joystick_button, nullptr) + + PORT_START("DIPS") + PORT_DIPNAME(0x01, 0x00, "Line Standard") PORT_DIPLOCATION("S:1") + PORT_DIPSETTING(0x00, "525 lines 60Hz") + PORT_DIPSETTING(0x01, "625 lines 50Hz") + PORT_DIPNAME(0x02, 0x00, "Printer") PORT_DIPLOCATION("S:2") + PORT_DIPSETTING(0x00, "Parallel") + PORT_DIPSETTING(0x02, "Serial") + PORT_DIPNAME(0x0c, 0x00, "Language") PORT_DIPLOCATION("S:3,4") + PORT_DIPSETTING(0x00, "English (ISO646)") + PORT_DIPSETTING(0x04, "ASCII") + PORT_DIPSETTING(0x08, "German") + PORT_DIPSETTING(0x0c, "Spanish") +INPUT_PORTS_END + /*************************************************************************** MACHINE DRIVERS @@ -655,13 +903,13 @@ void einstein_state::einstein(machine_config &config) // floppy WD1770(config, m_fdc, XTAL_X002); - FLOPPY_CONNECTOR(config, IC_I042 ":0", einstein_floppies, "3ss", floppy_image_device::default_floppy_formats); - FLOPPY_CONNECTOR(config, IC_I042 ":1", einstein_floppies, "3ss", floppy_image_device::default_floppy_formats); - FLOPPY_CONNECTOR(config, IC_I042 ":2", einstein_floppies, "525qd", floppy_image_device::default_floppy_formats); - FLOPPY_CONNECTOR(config, IC_I042 ":3", einstein_floppies, "525qd", floppy_image_device::default_floppy_formats); + FLOPPY_CONNECTOR(config, IC_I042 ":0", einstein_floppies, "3ss", floppy_image_device::default_floppy_formats).enable_sound(true); + FLOPPY_CONNECTOR(config, IC_I042 ":1", einstein_floppies, "3ss", floppy_image_device::default_floppy_formats).enable_sound(true); + FLOPPY_CONNECTOR(config, IC_I042 ":2", einstein_floppies, "525qd", floppy_image_device::default_floppy_formats).enable_sound(true); + FLOPPY_CONNECTOR(config, IC_I042 ":3", einstein_floppies, "525qd", floppy_image_device::default_floppy_formats).enable_sound(true); /* software lists */ - SOFTWARE_LIST(config, "disk_list").set_original("einstein"); + SOFTWARE_LIST(config, "disk_list").set_original("einstein").set_filter("TC01"); /* RAM is provided by 8k DRAM ICs i009, i010, i011, i012, i013, i014, i015 and i016 */ /* internal ram */ @@ -677,6 +925,42 @@ void einstein_state::einstein(machine_config &config) EINSTEIN_USERPORT(config, "user").bstb_handler().set(IC_I063, FUNC(z80pio_device::strobe_b)); } +void einstein_state::einst256(machine_config &config) +{ + einstein(config); + + /* remove components not present in TC256 */ + config.device_remove(IC_I063); + config.device_remove("vdp"); + config.device_remove("adc"); + config.device_remove(IC_I042 ":2"); + config.device_remove(IC_I042 ":3"); + config.device_remove("pipe"); + config.device_remove("user"); + + /* basic machine hardware */ + m_maincpu->set_addrmap(AS_IO, &einstein_state::einst256_io); + m_maincpu->set_daisy_config(einst256_daisy_chain); + + Z80DAISY_GENERIC(config, m_vdp_daisy, 0xfe); + m_vdp_daisy->int_handler().set(FUNC(einstein_state::int_w<5>)); + + /* video hardware */ + v9938_device &v9938(V9938(config, "v9938", 21.477272_MHz_XTAL)); + v9938.set_screen("screen"); + v9938.set_vram_size(0x30000); + v9938.int_cb().set(m_vdp_daisy, FUNC(z80daisy_generic_device::int_w)); + + /* printer */ + m_centronics->ack_handler().set(FUNC(einstein_state::write_centronics_ack)); + + /* cassette */ + CASSETTE(config, m_cassette); + + /* software lists */ + subdevice("disk_list")->set_filter("256"); +} + /*************************************************************************** ROM DEFINITIONS @@ -688,20 +972,19 @@ void einstein_state::einstein(machine_config &config) * We are missing dumps of version MOS 1.1, possibly of 1.0 if it exists. */ ROM_START( einstein ) - ROM_REGION(0x8000, "bios", 0) + ROM_REGION(0x8000, "bios", ROMREGION_ERASEFF) /* i023 */ ROM_SYSTEM_BIOS(0, "mos12", "MOS 1.2") - ROMX_LOAD("mos12.i023", 0, 0x2000, CRC(ec134953) SHA1(a02125d8ebcda48aa784adbb42a8b2d7ef3a4b77), ROM_BIOS(0)) + ROMX_LOAD("mos12.i023", 0x0000, 0x2000, CRC(ec134953) SHA1(a02125d8ebcda48aa784adbb42a8b2d7ef3a4b77), ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "mos121", "MOS 1.21") - ROMX_LOAD("mos121.i023", 0, 0x2000, CRC(a746eeb6) SHA1(f75aaaa777d0fd92225acba291f6bf428b341d3e), ROM_BIOS(1)) + ROMX_LOAD("mos121.i023", 0x0000, 0x2000, CRC(a746eeb6) SHA1(f75aaaa777d0fd92225acba291f6bf428b341d3e), ROM_BIOS(1)) ROM_RELOAD(0x2000, 0x2000) - /* i024 */ - ROM_FILL(0x4000, 0x4000, 0xff) ROM_END ROM_START( einst256 ) - ROM_REGION(0x8000, "bios", 0) - ROM_LOAD("tc256.rom", 0x0000, 0x4000, BAD_DUMP CRC(ef8dad88) SHA1(eb2102d3bef572db7161c26a7c68a5fcf457b4d0) ) + ROM_REGION(0x8000, "bios", ROMREGION_ERASEFF) + /* i008 */ + ROM_LOAD("mos21.i008", 0x0000, 0x4000, CRC(d1bb5efc) SHA1(9168df70af6746c88748049d1b9d119a29e605de) ) ROM_END @@ -711,4 +994,4 @@ ROM_END // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1984, einstein, 0, 0, einstein, einstein, einstein_state, empty_init, "Tatung", "Einstein TC-01", 0 ) -COMP( 1986, einst256, 0, 0, einstein, einstein, einstein_state, empty_init, "Tatung", "Einstein 256", MACHINE_NOT_WORKING ) +COMP( 1986, einst256, 0, 0, einst256, einst256, einstein_state, empty_init, "Tatung", "Einstein 256", 0 )