// license:BSD-3-Clause // copyright-holders:Curt Coder /*************************************************************************** VideoBrain FamilyComputer http://www.atariprotos.com/othersystems/videobrain/videobrain.htm http://www.seanriddle.com/vbinfo.html http://www.seanriddle.com/videobrain.html http://www.google.com/patents/US4232374 http://www.google.com/patents/US4177462 http://www.orphanedgames.com/videobrain/ http://www.datalytixllc.com/videobrain/ http://blog.kevtris.org/blogfiles/videobrain/videobrain_unwrapped.txt ****************************************************************************/ /* TODO: - wait states (UV201: 2.9us, memory except RES1: 1.65us) - interlaced video? - pinball background colors - Y-zoom starting on odd scanline only 1 line high - object height 0 glitch - object column 0xff glitch - video interrupts - R-2R ladder DAC - reset on cartridge unload - use machine/f3853.h - joystick scan timer 555 - expander 1 (F3870 CPU, cassette, RS-232) - expander 2 (modem) */ #include "includes/vidbrain.h" #include "vidbrain.lh" //************************************************************************** // MACROS / CONSTANTS //************************************************************************** #define LOG 1 //************************************************************************** // READ/WRITE HANDLERS //************************************************************************** //------------------------------------------------- // keyboard_w - keyboard column write //------------------------------------------------- WRITE8_MEMBER( vidbrain_state::keyboard_w ) { /* bit description 0 keyboard column 0, sound data 0 1 keyboard column 1, sound data 1 2 keyboard column 2 3 keyboard column 3 4 keyboard column 4 5 keyboard column 5 6 keyboard column 6 7 keyboard column 7 */ if (LOG) logerror("Keyboard %02x\n", data); m_keylatch = data; } //------------------------------------------------- // keyboard_r - keyboard row read //------------------------------------------------- READ8_MEMBER( vidbrain_state::keyboard_r ) { /* bit description 0 keyboard row 0, joystick 1 fire 1 keyboard row 1, joystick 2 fire 2 keyboard row 2, joystick 3 fire 3 keyboard row 3, joystick 4 fire 4 5 6 7 */ UINT8 data = m_joy_r->read(); if (BIT(m_keylatch, 0)) data |= m_io00->read(); if (BIT(m_keylatch, 1)) data |= m_io01->read(); if (BIT(m_keylatch, 2)) data |= m_io02->read(); if (BIT(m_keylatch, 3)) data |= m_io03->read(); if (BIT(m_keylatch, 4)) data |= m_io04->read(); if (BIT(m_keylatch, 5)) data |= m_io05->read(); if (BIT(m_keylatch, 6)) data |= m_io06->read(); if (BIT(m_keylatch, 7)) data |= m_io07->read(); if (!m_uv->kbd_r()) data |= m_uv201_31->read(); return data; } //------------------------------------------------- // sound_w - sound clock write //------------------------------------------------- WRITE8_MEMBER( vidbrain_state::sound_w ) { /* bit description 0 1 2 3 4 sound clock 5 accessory jack pin 5 6 accessory jack pin 1 7 joystick enable */ if (LOG) logerror("Sound %02x\n", data); // sound clock int sound_clk = BIT(data, 4); if (!m_sound_clk && sound_clk) { //m_discrete->write(space, NODE_01, m_keylatch & 0x03); UINT8 dac_data = 0; switch (m_keylatch & 0x03) { case 0: dac_data = 0x00; break; case 1: dac_data = 0x55; break; case 2: dac_data = 0xaa; break; case 3: dac_data = 0xff; break; } m_dac->write_unsigned8(dac_data); } m_sound_clk = sound_clk; // joystick enable m_joy_enable = BIT(data, 7); } //------------------------------------------------- // interrupt_check - check interrupts //------------------------------------------------- void vidbrain_state::interrupt_check() { int interrupt = CLEAR_LINE; switch (m_int_enable) { case 1: if (m_ext_int_latch) interrupt = ASSERT_LINE; break; case 3: if (m_timer_int_latch) interrupt = ASSERT_LINE; break; } m_maincpu->set_input_line(F8_INPUT_LINE_INT_REQ, interrupt); } //------------------------------------------------- // f3853_w - F3853 SMI write //------------------------------------------------- WRITE8_MEMBER( vidbrain_state::f3853_w ) { switch (offset) { case 0: // interrupt vector address high m_vector = (data << 8) | (m_vector & 0xff); logerror("%s: F3853 Interrupt Vector %04x\n", machine().describe_context(), m_vector); break; case 1: // interrupt vector address low m_vector = (m_vector & 0xff00) | data; logerror("%s: F3853 Interrupt Vector %04x\n", machine().describe_context(), m_vector); break; case 2: // interrupt control m_int_enable = data & 0x03; logerror("%s: F3853 Interrupt Control %u\n", machine().describe_context(), m_int_enable); interrupt_check(); if (m_int_enable == 0x03) fatalerror("F3853 Timer not supported!\n"); break; case 3: // timer 8-bit polynomial counter fatalerror("%s: F3853 Timer not supported!\n", machine().describe_context()); break; } } //************************************************************************** // ADDRESS MAPS //************************************************************************** //------------------------------------------------- // ADDRESS_MAP( vidbrain_mem ) //------------------------------------------------- static ADDRESS_MAP_START( vidbrain_mem, AS_PROGRAM, 8, vidbrain_state ) ADDRESS_MAP_GLOBAL_MASK(0x3fff) AM_RANGE(0x0000, 0x07ff) AM_ROM AM_REGION("res1", 0) AM_RANGE(0x0800, 0x08ff) AM_MIRROR(0x2300) AM_DEVREADWRITE(UV201_TAG, uv201_device, read, write) AM_RANGE(0x0c00, 0x0fff) AM_MIRROR(0x2000) AM_RAM AM_RANGE(0x1000, 0x17ff) AM_DEVREADWRITE(VIDEOBRAIN_EXPANSION_SLOT_TAG, videobrain_expansion_slot_device, cs1_r, cs1_w) AM_RANGE(0x1800, 0x1fff) AM_DEVREADWRITE(VIDEOBRAIN_EXPANSION_SLOT_TAG, videobrain_expansion_slot_device, cs2_r, cs2_w) AM_RANGE(0x2000, 0x27ff) AM_ROM AM_REGION("res2", 0) AM_RANGE(0x3000, 0x3fff) AM_DEVREADWRITE(VIDEOBRAIN_EXPANSION_SLOT_TAG, videobrain_expansion_slot_device, unmap_r, unmap_w) ADDRESS_MAP_END //------------------------------------------------- // ADDRESS_MAP( vidbrain_io ) //------------------------------------------------- static ADDRESS_MAP_START( vidbrain_io, AS_IO, 8, vidbrain_state ) AM_RANGE(0x00, 0x00) AM_WRITE(keyboard_w) AM_RANGE(0x01, 0x01) AM_READWRITE(keyboard_r, sound_w) AM_RANGE(0x0c, 0x0f) AM_WRITE(f3853_w) // AM_RANGE(0x0c, 0x0f) AM_DEVREADWRITE(F3853_TAG, f3853_device, read, write) ADDRESS_MAP_END //************************************************************************** // INPUT PORTS //************************************************************************** //------------------------------------------------- // INPUT_CHANGED_MEMBER( trigger_reset ) //------------------------------------------------- INPUT_CHANGED_MEMBER( vidbrain_state::trigger_reset ) { m_maincpu->set_input_line(INPUT_LINE_RESET, newval ? CLEAR_LINE : ASSERT_LINE); } //------------------------------------------------- // INPUT_PORTS( vidbrain ) //------------------------------------------------- static INPUT_PORTS_START( vidbrain ) PORT_START("IO00") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_I) PORT_CHAR('I') PORT_CHAR('"') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_O) PORT_CHAR('O') PORT_CHAR('#') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("P \xC2\xA2") PORT_CODE(KEYCODE_P) PORT_CHAR('P') PORT_CHAR(0x00a2) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("; \xC2\xB6") PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(0x00b6) PORT_START("IO01") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_U) PORT_CHAR('U') PORT_CHAR('!') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_K) PORT_CHAR('K') PORT_CHAR(')') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_L) PORT_CHAR('L') PORT_CHAR('$') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_COMMA) PORT_CHAR('\'') PORT_CHAR('*') PORT_START("IO02") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("Y \xC3\xB7") PORT_CODE(KEYCODE_Y) PORT_CHAR('Y') PORT_CHAR(0x00f7) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_J) PORT_CHAR('J') PORT_CHAR('(') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_M) PORT_CHAR('M') PORT_CHAR(':') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SHIFT") PORT_CODE(KEYCODE_RSHIFT) PORT_CHAR(UCHAR_SHIFT_1) PORT_START("IO03") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("T \xC3\x97") PORT_CODE(KEYCODE_T) PORT_CHAR('T') PORT_CHAR(0x00d7) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_CHAR('/') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_N) PORT_CHAR('N') PORT_CHAR(',') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("ERASE RESTART") PORT_CODE(KEYCODE_BACKSPACE) PORT_CHAR(8) PORT_START("IO04") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_R) PORT_CHAR('R') PORT_CHAR('9') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_CHAR('-') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_CHAR('=') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SPACE RUN/STOP") PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ') PORT_START("IO05") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_CHAR('8') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_CHAR('6') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_V) PORT_CHAR('V') PORT_CHAR('+') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("SPECIAL ALARM") PORT_CODE(KEYCODE_F4) PORT_START("IO06") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_W) PORT_CHAR('W') PORT_CHAR('7') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_CHAR('5') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_CHAR('3') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("NEXT CLOCK") PORT_CODE(KEYCODE_F3) PORT_START("IO07") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Q) PORT_CHAR('Q') PORT_CHAR('%') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_S) PORT_CHAR('S') PORT_CHAR('4') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_X) PORT_CHAR('X') PORT_CHAR('2') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("PREVIOUS COLOR") PORT_CODE(KEYCODE_F2) PORT_START("UV201-31") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_CHAR('.') PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_Z) PORT_CHAR('Z') PORT_CHAR('1') PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_CODE(KEYCODE_SLASH) PORT_CHAR('?') PORT_CHAR('0') PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("BACK TEXT") PORT_CODE(KEYCODE_F1) PORT_START("RESET") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_KEYBOARD ) PORT_NAME("MASTER CONTROL") PORT_CODE(KEYCODE_F5) PORT_CHAR(UCHAR_MAMEKEY(F5)) PORT_CHANGED_MEMBER(DEVICE_SELF, vidbrain_state, trigger_reset, 0) PORT_START("JOY1-X") PORT_BIT( 0xff, 50, IPT_AD_STICK_X ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(1) PORT_START("JOY1-Y") PORT_BIT( 0xff, 50, IPT_AD_STICK_Y ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(1) PORT_START("JOY2-X") PORT_BIT( 0xff, 50, IPT_AD_STICK_X ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(2) PORT_START("JOY2-Y") PORT_BIT( 0xff, 50, IPT_AD_STICK_Y ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(2) PORT_START("JOY3-X") PORT_BIT( 0xff, 50, IPT_AD_STICK_X ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(3) PORT_START("JOY3-Y") PORT_BIT( 0xff, 50, IPT_AD_STICK_Y ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(3) PORT_START("JOY4-X") PORT_BIT( 0xff, 50, IPT_AD_STICK_X ) PORT_MINMAX(0, 99) PORT_SENSITIVITY(25) PORT_PLAYER(4) PORT_START("JOY4-Y") PORT_BIT( 0xff, 70, IPT_AD_STICK_Y ) PORT_MINMAX(0, 139) PORT_SENSITIVITY(25) PORT_PLAYER(4) PORT_START("JOY-R") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(1) PORT_BIT( 0x02, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(3) PORT_BIT( 0x08, IP_ACTIVE_HIGH, IPT_BUTTON1 ) PORT_PLAYER(4) INPUT_PORTS_END //************************************************************************** // SOUND //************************************************************************** //------------------------------------------------- // DISCRETE_SOUND( vidbrain ) //------------------------------------------------- static const discrete_dac_r1_ladder vidbrain_dac = { 2, { RES_K(120), RES_K(120) }, // R=56K, 2R=120K 0, 0, RES_K(120), 0 }; static DISCRETE_SOUND_START( vidbrain ) DISCRETE_INPUT_DATA(NODE_01) DISCRETE_DAC_R1(NODE_02, NODE_01, DEFAULT_TTL_V_LOGIC_1, &vidbrain_dac) DISCRETE_OUTPUT(NODE_02, 5000) DISCRETE_SOUND_END //************************************************************************** // DEVICE CONFIGURATION //************************************************************************** //------------------------------------------------- // f3853 interrupt request callback //------------------------------------------------- F3853_INTERRUPT_REQ_CB(vidbrain_state::f3853_int_req_w) { m_vector = addr; m_maincpu->set_input_line(F8_INPUT_LINE_INT_REQ, level); } //------------------------------------------------- // UV201_INTERFACE( uv_intf ) //------------------------------------------------- WRITE_LINE_MEMBER( vidbrain_state::ext_int_w ) { if (state) { m_ext_int_latch = state; interrupt_check(); } } WRITE_LINE_MEMBER( vidbrain_state::hblank_w ) { if (state && m_joy_enable && !m_timer_ne555->enabled()) { UINT8 joydata = 0; if (!BIT(m_keylatch, 0)) joydata = m_joy1_x->read(); if (!BIT(m_keylatch, 1)) joydata = m_joy1_y->read(); if (!BIT(m_keylatch, 2)) joydata = m_joy2_x->read(); if (!BIT(m_keylatch, 3)) joydata = m_joy2_y->read(); if (!BIT(m_keylatch, 4)) joydata = m_joy3_x->read(); if (!BIT(m_keylatch, 5)) joydata = m_joy3_y->read(); if (!BIT(m_keylatch, 6)) joydata = m_joy4_x->read(); if (!BIT(m_keylatch, 7)) joydata = m_joy4_y->read(); // NE555 in monostable mode // R = 3K9 + 100K linear pot // C = 0.003uF // t = 1.1 * R * C double t = 1.1 * (RES_K(3.9) + RES_K(joydata)) * 3; timer_set(attotime::from_nsec(t), TIMER_JOYSTICK); } } READ8_MEMBER(vidbrain_state::memory_read_byte) { address_space& prog_space = m_maincpu->space(AS_PROGRAM); return prog_space.read_byte(offset); } //************************************************************************** // MACHINE INITIALIZATION //************************************************************************** //------------------------------------------------- // IRQ_CALLBACK_MEMBER(vidbrain_int_ack) //------------------------------------------------- IRQ_CALLBACK_MEMBER(vidbrain_state::vidbrain_int_ack) { UINT16 vector = m_vector; switch (m_int_enable) { case 1: vector |= 0x80; m_ext_int_latch = 0; break; case 3: vector &= ~0x80; m_timer_int_latch = 0; break; } interrupt_check(); return vector; } //------------------------------------------------- // device_timer - handler timer events //------------------------------------------------- void vidbrain_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) { m_uv->ext_int_w(0); m_ext_int_latch = 1; interrupt_check(); } //------------------------------------------------- // MACHINE_START( vidbrain ) //------------------------------------------------- void vidbrain_state::machine_start() { // allocate timers m_timer_ne555 = timer_alloc(TIMER_JOYSTICK); // register for state saving save_item(NAME(m_vector)); save_item(NAME(m_int_enable)); save_item(NAME(m_ext_int_latch)); save_item(NAME(m_timer_int_latch)); save_item(NAME(m_keylatch)); save_item(NAME(m_joy_enable)); save_item(NAME(m_sound_clk)); } void vidbrain_state::machine_reset() { m_int_enable = 0; m_ext_int_latch = 0; m_timer_int_latch = 0; } //************************************************************************** // MACHINE CONFIGURATION //************************************************************************** //------------------------------------------------- // MACHINE_CONFIG( vidbrain ) //------------------------------------------------- static MACHINE_CONFIG_START( vidbrain, vidbrain_state ) // basic machine hardware MCFG_CPU_ADD(F3850_TAG, F8, XTAL_4MHz/2) MCFG_CPU_PROGRAM_MAP(vidbrain_mem) MCFG_CPU_IO_MAP(vidbrain_io) MCFG_CPU_IRQ_ACKNOWLEDGE_DRIVER(vidbrain_state,vidbrain_int_ack) // video hardware MCFG_DEFAULT_LAYOUT(layout_vidbrain) MCFG_UV201_ADD(UV201_TAG, SCREEN_TAG, 3636363, uv_intf) MCFG_UV201_EXT_INT_CALLBACK(WRITELINE(vidbrain_state, ext_int_w)) MCFG_UV201_HBLANK_CALLBACK(WRITELINE(vidbrain_state, hblank_w)) MCFG_UV201_DB_CALLBACK(READ8(vidbrain_state, memory_read_byte)) // sound hardware MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(DISCRETE_TAG, DISCRETE, 0) MCFG_SOUND_CONFIG_DISCRETE(vidbrain) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.80) MCFG_SOUND_ADD(DAC_TAG, DAC, 0) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25) // devices MCFG_DEVICE_ADD(F3853_TAG, F3853, XTAL_4MHz/2) MCFG_F3853_EXT_INPUT_CB(vidbrain_state, f3853_int_req_w) // cartridge MCFG_VIDEOBRAIN_EXPANSION_SLOT_ADD(VIDEOBRAIN_EXPANSION_SLOT_TAG, vidbrain_expansion_cards, NULL) // software lists MCFG_SOFTWARE_LIST_ADD("cart_list", "vidbrain") // internal ram MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("1K") MACHINE_CONFIG_END //************************************************************************** // ROMS //************************************************************************** //------------------------------------------------- // ROM( vidbrain ) //------------------------------------------------- ROM_START( vidbrain ) ROM_REGION( 0x800, "res1", 0 ) ROM_LOAD( "uvres 1n.d67", 0x000, 0x800, CRC(065fe7c2) SHA1(9776f9b18cd4d7142e58eff45ac5ee4bc1fa5a2a) ) ROM_REGION( 0x800, "res2", 0 ) ROM_LOAD( "resn2.e5", 0x000, 0x800, CRC(1d85d7be) SHA1(26c5a25d1289dedf107fa43aa8dfc14692fd9ee6) ) ROM_REGION( 0x800, F3870_TAG, 0 ) ROM_LOAD( "expander1.bin", 0x0000, 0x0800, CRC(dac31abc) SHA1(e1ac7a9d654c2a70979effc744d98f21d13b4e05) ) ROM_END //************************************************************************** // SYSTEM DRIVERS //************************************************************************** // YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS COMP( 1977, vidbrain, 0, 0, vidbrain, vidbrain, driver_device, 0, "VideoBrain Computer Company", "VideoBrain FamilyComputer", GAME_NOT_WORKING | GAME_IMPERFECT_SOUND )