// license:BSD-3-Clause // copyright-holders:Curt Coder /* Sega SG-1000 PCB Layout ---------- 171-5078 (C) SEGA 1983 171-5046 REV. A (C) SEGA 1983 |---------------------------| |----------------------------| | SW1 CN2 | |------|---------------| | SW2 CN4 | | |---| CN3 |---| | | CN1 CN5 | | | | 10.738635MHz |------------------------------| 7805 | | |---| |------------------------------| | | | | CN6 | | | 9 | | | | 9 | LS32 | | | 1 | |---------| | | | 8 | | TMM2009 | LS139 | | | A | |---------| |------------------| | | | | | Z80 | | | |---| |------------------| | | | | | | MB8118 MB8118 MB8118 MB8118 SN76489A SW3 | | MB8118 MB8118 MB8118 MB8118 LS257 LS257 | |---------------------------------------------------------------------------------------| Notes: All IC's shown. Z80 - NEC D780C-1 / Zilog Z8400A (REV.A) Z80A CPU @ 3.579545 TMS9918A- Texas Instruments TMS9918ANL Video Display Processor @ 10.738635MHz MB8118 - Fujitsu MB8118-12 16K x 1 Dynamic RAM TMM2009 - Toshiba TMM2009P-A / TMM2009P-B (REV.A) SN76489A- Texas Instruments SN76489AN Digital Complex Sound Generator @ 3.579545 CN1 - player 1 joystick connector CN2 - RF video connector CN3 - keyboard connector CN4 - power connector (+9VDC) CN5 - player 2 joystick connector CN6 - cartridge connector SW1 - TV channel select switch SW2 - power switch SW3 - hold switch */ /* TODO: - SC-3000 return instruction referenced by R when reading ports 60-7f,e0-ff - connect PSG /READY signal to Z80 WAIT - accurate video timing - SH-400 racing controller - SF-7000 serial comms */ #include "includes/sg1000.h" #include "bus/rs232/rs232.h" #include "softlist.h" /*************************************************************************** READ/WRITE HANDLERS ***************************************************************************/ // TODO: not sure if the OMV bios actually detects the presence of a cart, // or if the cart data simply overwrites the internal bios... // for the moment let assume the latter! READ8_MEMBER( sg1000_state::omv_r ) { if (m_cart && m_cart->exists()) return m_cart->read_cart(space, offset); else return m_rom->base()[offset]; } WRITE8_MEMBER( sg1000_state::omv_w ) { if (m_cart && m_cart->exists()) m_cart->write_cart(space, offset, data); } READ8_MEMBER( sg1000_state::peripheral_r ) { bool joy_ports_disabled = m_sgexpslot->is_readable(offset); if (joy_ports_disabled) { return m_sgexpslot->read(space, offset); } else { if (offset & 0x01) return m_pb7->read(); else return m_pa7->read(); } } WRITE8_MEMBER( sg1000_state::peripheral_w ) { bool joy_ports_disabled = m_sgexpslot->is_writeable(offset); if (joy_ports_disabled) { m_sgexpslot->write(space, offset, data); } } /*------------------------------------------------- ADDRESS_MAP( sg1000_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( sg1000_map, AS_PROGRAM, 8, sg1000_state ) AM_RANGE(0x0000, 0xbfff) AM_DEVREADWRITE(CARTSLOT_TAG, sega8_cart_slot_device, read_cart, write_cart) AM_RANGE(0xc000, 0xc3ff) AM_MIRROR(0x3c00) AM_RAM ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( sg1000_io_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( sg1000_io_map, AS_IO, 8, sg1000_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x40, 0x40) AM_MIRROR(0x3f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) AM_RANGE(0xdc, 0xdf) AM_READWRITE(peripheral_r, peripheral_w) ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( omv_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( omv_map, AS_PROGRAM, 8, sg1000_state ) AM_RANGE(0x0000, 0xbfff) AM_READWRITE(omv_r, omv_w) AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( omv_io_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( omv_io_map, AS_IO, 8, sg1000_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x40, 0x40) AM_MIRROR(0x3f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) AM_RANGE(0x80, 0x80) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) AM_RANGE(0x81, 0x81) AM_MIRROR(0x3e) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) AM_RANGE(0xc0, 0xc0) AM_MIRROR(0x38) AM_READ_PORT("C0") AM_RANGE(0xc1, 0xc1) AM_MIRROR(0x38) AM_READ_PORT("C1") AM_RANGE(0xc2, 0xc2) AM_MIRROR(0x38) AM_READ_PORT("C2") AM_RANGE(0xc3, 0xc3) AM_MIRROR(0x38) AM_READ_PORT("C3") AM_RANGE(0xc4, 0xc4) AM_MIRROR(0x3a) AM_READ_PORT("C4") AM_RANGE(0xc5, 0xc5) AM_MIRROR(0x3a) AM_READ_PORT("C5") ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( sc3000_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( sc3000_map, AS_PROGRAM, 8, sg1000_state ) AM_RANGE(0x0000, 0xbfff) AM_DEVREADWRITE(CARTSLOT_TAG, sega8_cart_slot_device, read_cart, write_cart) AM_RANGE(0xc000, 0xc7ff) AM_MIRROR(0x3800) AM_RAM ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( sc3000_io_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( sc3000_io_map, AS_IO, 8, sg1000_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x7f, 0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) AM_RANGE(0xbe, 0xbe) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) AM_RANGE(0xbf, 0xbf) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) AM_RANGE(0xdc, 0xdf) AM_READWRITE(peripheral_r, peripheral_w) ADDRESS_MAP_END /* This is how the I/O ports are really mapped, but MAME does not support overlapping ranges static ADDRESS_MAP_START( sc3000_io_map, AS_IO, 8, sg1000_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x00, 0x00) AM_MIRROR(0xdf) AM_DEVREADWRITE(UPD9255_TAG, i8255_device, read, write) AM_RANGE(0x00, 0x00) AM_MIRROR(0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) AM_RANGE(0x00, 0x00) AM_MIRROR(0xae) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) AM_RANGE(0x01, 0x01) AM_MIRROR(0xae) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) AM_RANGE(0x60, 0x60) AM_MIRROR(0x9f) AM_READ(sc3000_r_r) ADDRESS_MAP_END */ /*------------------------------------------------- ADDRESS_MAP( sf7000_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( sf7000_map, AS_PROGRAM, 8, sf7000_state ) AM_RANGE(0x0000, 0x3fff) AM_READ_BANK("bank1") AM_WRITE_BANK("bank2") AM_RANGE(0x4000, 0xffff) AM_RAM ADDRESS_MAP_END /*------------------------------------------------- ADDRESS_MAP( sf7000_io_map ) -------------------------------------------------*/ static ADDRESS_MAP_START( sf7000_io_map, AS_IO, 8, sf7000_state ) ADDRESS_MAP_GLOBAL_MASK(0xff) AM_RANGE(0x7f, 0x7f) AM_DEVWRITE(SN76489AN_TAG, sn76489a_device, write) AM_RANGE(0xbe, 0xbe) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, vram_read, vram_write) AM_RANGE(0xbf, 0xbf) AM_DEVREADWRITE(TMS9918A_TAG, tms9918a_device, register_read, register_write) AM_RANGE(0xdc, 0xdf) AM_READWRITE(peripheral_r, peripheral_w) AM_RANGE(0xe0, 0xe1) AM_DEVICE(UPD765_TAG, upd765a_device, map) AM_RANGE(0xe4, 0xe7) AM_DEVREADWRITE(UPD9255_1_TAG, i8255_device, read, write) AM_RANGE(0xe8, 0xe8) AM_DEVREADWRITE(UPD8251_TAG, i8251_device, data_r, data_w) AM_RANGE(0xe9, 0xe9) AM_DEVREADWRITE(UPD8251_TAG, i8251_device, status_r, control_w) ADDRESS_MAP_END /*************************************************************************** INPUT PORTS ***************************************************************************/ /*------------------------------------------------- INPUT_CHANGED_MEMBER( trigger_nmi ) -------------------------------------------------*/ INPUT_CHANGED_MEMBER( sg1000_state::trigger_nmi ) { m_maincpu->set_input_line(INPUT_LINE_NMI, newval ? CLEAR_LINE : ASSERT_LINE); } /*------------------------------------------------- INPUT_PORTS( sg1000 ) -------------------------------------------------*/ static INPUT_PORTS_START( sg1000_joy ) PORT_START("PA7") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) PORT_START("PB7") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END static INPUT_PORTS_START( sg1000 ) PORT_INCLUDE( sg1000_joy ) PORT_START("NMI") PORT_BIT( 0x01, IP_ACTIVE_HIGH, IPT_START ) PORT_NAME("PAUSE") PORT_CODE(KEYCODE_P) PORT_CHANGED_MEMBER(DEVICE_SELF, sg1000_state, trigger_nmi, 0) INPUT_PORTS_END /*------------------------------------------------- INPUT_PORTS( omv ) -------------------------------------------------*/ static INPUT_PORTS_START( omv ) PORT_START("C0") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_2) PORT_CHAR('2') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_3) PORT_CHAR('3') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_4) PORT_CHAR('4') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_5) PORT_CHAR('5') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_6) PORT_CHAR('6') PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("C1") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_7) PORT_CHAR('7') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_8) PORT_CHAR('8') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("9 #") PORT_CODE(KEYCODE_9) PORT_CHAR('9') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_NAME("0 *") PORT_CODE(KEYCODE_0) PORT_CHAR('0') PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("C2") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_A) PORT_CHAR('A') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_B) PORT_CHAR('B') PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_C) PORT_CHAR('C') PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_D) PORT_CHAR('D') PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_E) PORT_CHAR('E') PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_F) PORT_CHAR('F') PORT_BIT( 0xc0, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("C3") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_G) PORT_CHAR('G') PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_KEYPAD ) PORT_CODE(KEYCODE_H) PORT_CHAR('H') PORT_BIT( 0xfc, IP_ACTIVE_LOW, IPT_UNUSED ) PORT_START("C4") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_BIT( 0x10, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_NAME("S-1") PORT_BIT( 0x20, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_NAME("S-2") PORT_BIT( 0x40, IP_ACTIVE_LOW, IPT_JOYSTICK_UP ) PORT_PLAYER(2) PORT_BIT( 0x80, IP_ACTIVE_LOW, IPT_JOYSTICK_DOWN ) PORT_PLAYER(2) PORT_START("C5") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_JOYSTICK_LEFT ) PORT_PLAYER(2) PORT_BIT( 0x02, IP_ACTIVE_LOW, IPT_JOYSTICK_RIGHT ) PORT_PLAYER(2) PORT_BIT( 0x04, IP_ACTIVE_LOW, IPT_BUTTON1 ) PORT_PLAYER(2) PORT_BIT( 0x08, IP_ACTIVE_LOW, IPT_BUTTON2 ) PORT_PLAYER(2) PORT_BIT( 0xf0, IP_ACTIVE_LOW, IPT_UNUSED ) INPUT_PORTS_END /*------------------------------------------------- INPUT_PORTS( sc3000 ) -------------------------------------------------*/ static INPUT_PORTS_START( sc3000 ) PORT_INCLUDE( sg1000_joy ) // keyboard keys are added by the embedded sk1100 device PORT_START("NMI") PORT_BIT( 0x01, IP_ACTIVE_LOW, IPT_KEYBOARD ) PORT_NAME("RESET") PORT_CODE(KEYCODE_F10) PORT_CHANGED_MEMBER(DEVICE_SELF, sg1000_state, trigger_nmi, 0) INPUT_PORTS_END /*------------------------------------------------- INPUT_PORTS( sf7000 ) -------------------------------------------------*/ static INPUT_PORTS_START( sf7000 ) PORT_INCLUDE( sc3000 ) PORT_START("BAUD") PORT_CONFNAME( 0x07, 0x05, "Baud rate") PORT_CONFSETTING( 0x00, "9600 baud" ) PORT_CONFSETTING( 0x01, "4800 baud" ) PORT_CONFSETTING( 0x02, "2400 baud" ) PORT_CONFSETTING( 0x03, "1200 baud" ) PORT_CONFSETTING( 0x04, "600 baud" ) PORT_CONFSETTING( 0x05, "300 baud" ) INPUT_PORTS_END /*************************************************************************** DEVICE CONFIGURATION ***************************************************************************/ /*------------------------------------------------- I8255 INTERFACE -------------------------------------------------*/ WRITE_LINE_MEMBER( sf7000_state::write_centronics_busy ) { m_centronics_busy = state; } READ8_MEMBER( sf7000_state::ppi_pa_r ) { /* Signal Description PA0 INT from FDC PA1 BUSY from Centronics printer PA2 INDEX from FDD PA3 PA4 PA5 PA6 PA7 */ UINT8 data = 0; data |= m_fdc->get_irq() ? 0x01 : 0x00; data |= m_centronics_busy << 1; data |= m_floppy0->idx_r() << 2; return data; } WRITE8_MEMBER( sf7000_state::ppi_pc_w ) { /* Signal Description PC0 /INUSE signal to FDD PC1 /MOTOR ON signal to FDD PC2 TC signal to FDC PC3 RESET signal to FDC PC4 not connected PC5 not connected PC6 /ROM SEL (switch between IPL ROM and RAM) PC7 /STROBE to Centronics printer */ if (!BIT(data, 0)) m_fdc->set_floppy(m_floppy0); else m_fdc->set_floppy(nullptr); /* floppy motor */ m_floppy0->mon_w(BIT(data, 1)); /* FDC terminal count */ m_fdc->tc_w(BIT(data, 2)); /* FDC reset */ if (BIT(data, 3)) { m_fdc->reset(); } /* ROM selection */ membank("bank1")->set_entry(BIT(data, 6)); /* printer strobe */ m_centronics->write_strobe(BIT(data, 7)); } /*------------------------------------------------- upd765_interface sf7000_upd765_interface -------------------------------------------------*/ FLOPPY_FORMATS_MEMBER( sf7000_state::floppy_formats ) FLOPPY_SF7000_FORMAT FLOPPY_FORMATS_END /*------------------------------------------------- floppy_interface sf7000_floppy_interface -------------------------------------------------*/ static SLOT_INTERFACE_START( sf7000_floppies ) SLOT_INTERFACE( "3ssdd", FLOPPY_3_SSDD ) SLOT_INTERFACE_END /*------------------------------------------------- MACHINE_START( sg1000 ) -------------------------------------------------*/ void sg1000_state::machine_start() { if (m_cart->get_type() == SEGA8_DAHJEE_TYPEA || m_cart->get_type() == SEGA8_DAHJEE_TYPEB) { m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xffff, read8_delegate(FUNC(sega8_cart_slot_device::read_ram),(sega8_cart_slot_device*)m_cart)); m_maincpu->space(AS_PROGRAM).install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(sega8_cart_slot_device::write_ram),(sega8_cart_slot_device*)m_cart)); } if (m_cart) m_cart->save_ram(); } /*------------------------------------------------- MACHINE_START( sc3000 ) -------------------------------------------------*/ void sc3000_state::machine_start() { /* toggle light gun crosshair */ timer_set(attotime::zero, TIMER_LIGHTGUN_TICK); if (m_cart && m_cart->exists() && (m_cart->get_type() == SEGA8_BASIC_L3 || m_cart->get_type() == SEGA8_MUSIC_EDITOR || m_cart->get_type() == SEGA8_DAHJEE_TYPEA || m_cart->get_type() == SEGA8_DAHJEE_TYPEB)) { m_maincpu->space(AS_PROGRAM).install_read_handler(0xc000, 0xffff, read8_delegate(FUNC(sega8_cart_slot_device::read_ram),(sega8_cart_slot_device*)m_cart)); m_maincpu->space(AS_PROGRAM).install_write_handler(0xc000, 0xffff, write8_delegate(FUNC(sega8_cart_slot_device::write_ram),(sega8_cart_slot_device*)m_cart)); } if (m_cart) m_cart->save_ram(); } /*------------------------------------------------- MACHINE_START( sf7000 ) -------------------------------------------------*/ void sf7000_state::machine_start() { sc3000_state::machine_start(); save_item(NAME(m_centronics_busy)); /* configure memory banking */ membank("bank1")->configure_entry(0, m_rom->base()); membank("bank1")->configure_entry(1, m_ram->pointer()); membank("bank2")->configure_entry(0, m_ram->pointer()); } void sf7000_state::machine_reset() { membank("bank1")->set_entry(0); membank("bank2")->set_entry(0); } /*************************************************************************** MACHINE DRIVERS ***************************************************************************/ /*------------------------------------------------- MACHINE_CONFIG_START( sg1000, sg1000_state ) -------------------------------------------------*/ static MACHINE_CONFIG_START( sg1000, sg1000_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) MCFG_CPU_PROGRAM_MAP(sg1000_map) MCFG_CPU_IO_MAP(sg1000_io_map) /* video hardware */ MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 ) MCFG_TMS9928A_VRAM_SIZE(0x4000) MCFG_TMS9928A_OUT_INT_LINE_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG ) MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) /* expansion slot */ MCFG_SG1000_EXPANSION_ADD(EXPSLOT_TAG, sg1000_expansion_devices, nullptr, false) /* cartridge */ MCFG_SG1000_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, nullptr) /* software lists */ MCFG_SOFTWARE_LIST_ADD("cart_list","sg1000") /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("1K") MACHINE_CONFIG_END /*------------------------------------------------- MACHINE_CONFIG_DERIVED( omv, sg1000 ) -------------------------------------------------*/ static MACHINE_CONFIG_DERIVED( omv, sg1000 ) MCFG_CPU_MODIFY(Z80_TAG) MCFG_CPU_PROGRAM_MAP(omv_map) MCFG_CPU_IO_MAP(omv_io_map) MCFG_DEVICE_REMOVE(CARTSLOT_TAG) MCFG_OMV_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, nullptr) MCFG_RAM_MODIFY(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("2K") MACHINE_CONFIG_END /*------------------------------------------------- MACHINE_CONFIG_START( sc3000, sc3000_state ) -------------------------------------------------*/ static MACHINE_CONFIG_START( sc3000, sc3000_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) // LH0080A MCFG_CPU_PROGRAM_MAP(sc3000_map) MCFG_CPU_IO_MAP(sc3000_io_map) /* video hardware */ MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 ) MCFG_TMS9928A_VRAM_SIZE(0x4000) MCFG_TMS9928A_OUT_INT_LINE_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG ) MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) /* sc3000 has all sk1100 features built-in, so add it as a fixed slot */ MCFG_SG1000_EXPANSION_ADD(EXPSLOT_TAG, sg1000_expansion_devices, "sk1100", true) /* cartridge */ MCFG_SC3000_CARTRIDGE_ADD(CARTSLOT_TAG, sg1000_cart, nullptr) /* software lists */ MCFG_SOFTWARE_LIST_ADD("cart_list","sg1000") /* the sk1100 device will add sc3000 cart and cass lists */ /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("2K") MACHINE_CONFIG_END /*------------------------------------------------- MACHINE_CONFIG_START( sf7000, sf7000_state ) -------------------------------------------------*/ static MACHINE_CONFIG_START( sf7000, sf7000_state ) /* basic machine hardware */ MCFG_CPU_ADD(Z80_TAG, Z80, XTAL_10_738635MHz/3) MCFG_CPU_PROGRAM_MAP(sf7000_map) MCFG_CPU_IO_MAP(sf7000_io_map) /* video hardware */ MCFG_DEVICE_ADD( TMS9918A_TAG, TMS9918A, XTAL_10_738635MHz / 2 ) MCFG_TMS9928A_VRAM_SIZE(0x4000) MCFG_TMS9928A_OUT_INT_LINE_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_TMS9928A_SCREEN_ADD_NTSC( SCREEN_TAG ) MCFG_SCREEN_UPDATE_DEVICE( TMS9918A_TAG, tms9918a_device, screen_update ) /* sound hardware */ MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SOUND_ADD(SN76489AN_TAG, SN76489A, XTAL_10_738635MHz/3) MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 1.00) /* devices */ MCFG_DEVICE_ADD(UPD9255_1_TAG, I8255, 0) MCFG_I8255_IN_PORTA_CB(READ8(sf7000_state, ppi_pa_r)) MCFG_I8255_OUT_PORTB_CB(DEVWRITE8("cent_data_out", output_latch_device, write)) MCFG_I8255_OUT_PORTC_CB(WRITE8(sf7000_state, ppi_pc_w)) MCFG_DEVICE_ADD(UPD8251_TAG, I8251, 0) MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd)) MCFG_I8251_DTR_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_dtr)) MCFG_I8251_RTS_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_rts)) MCFG_RS232_PORT_ADD(RS232_TAG, default_rs232_devices, nullptr) MCFG_RS232_RXD_HANDLER(DEVWRITELINE(UPD8251_TAG, i8251_device, write_rxd)) MCFG_RS232_DSR_HANDLER(DEVWRITELINE(UPD8251_TAG, i8251_device, write_dsr)) MCFG_UPD765A_ADD(UPD765_TAG, false, false) MCFG_FLOPPY_DRIVE_ADD(UPD765_TAG ":0", sf7000_floppies, "3ssdd", sf7000_state::floppy_formats) MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer") MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics") /* sf7000 (sc3000) has all sk1100 features built-in, so add it as a fixed slot */ MCFG_SG1000_EXPANSION_ADD(EXPSLOT_TAG, sg1000_expansion_devices, "sk1100", true) /* software lists */ MCFG_SOFTWARE_LIST_ADD("flop_list","sf7000") /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") MACHINE_CONFIG_END /*************************************************************************** ROMS ***************************************************************************/ ROM_START( sg1000 ) ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) ROM_END #define rom_sg1000m2 rom_sg1000 #define rom_sc3000 rom_sg1000 #define rom_sc3000h rom_sg1000 ROM_START( sf7000 ) ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) ROM_LOAD( "ipl.rom", 0x0000, 0x2000, CRC(d76810b8) SHA1(77339a6db2593aadc638bed77b8e9bed5d9d87e3) ) ROM_END ROM_START( omv1000 ) ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) ROM_LOAD( "omvbios.bin", 0x0000, 0x4000, BAD_DUMP CRC(c5a67b95) SHA1(6d7c64dd60dee4a33061d3d3a7c2ed190d895cdb) ) // The BIOS comes from a Multivision FG-2000. It is still unknown if the FG-1000 BIOS differs ROM_END ROM_START( omv2000 ) ROM_REGION( 0x10000, Z80_TAG, ROMREGION_ERASE00 ) ROM_LOAD( "omvbios.bin", 0x0000, 0x4000, CRC(c5a67b95) SHA1(6d7c64dd60dee4a33061d3d3a7c2ed190d895cdb) ) ROM_END /*************************************************************************** SYSTEM DRIVERS ***************************************************************************/ /* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */ CONS( 1983, sg1000, 0, 0, sg1000, sg1000, driver_device, 0, "Sega", "SG-1000", MACHINE_SUPPORTS_SAVE ) CONS( 1984, sg1000m2, sg1000, 0, sc3000, sc3000, driver_device, 0, "Sega", "SG-1000 II", MACHINE_SUPPORTS_SAVE ) COMP( 1983, sc3000, 0, sg1000, sc3000, sc3000, driver_device, 0, "Sega", "SC-3000", MACHINE_SUPPORTS_SAVE ) COMP( 1983, sc3000h, sc3000, 0, sc3000, sc3000, driver_device, 0, "Sega", "SC-3000H", MACHINE_SUPPORTS_SAVE ) COMP( 1983, sf7000, sc3000, 0, sf7000, sf7000, driver_device, 0, "Sega", "SC-3000/Super Control Station SF-7000", MACHINE_SUPPORTS_SAVE ) CONS( 1984, omv1000, sg1000, 0, omv, omv, driver_device, 0, "Tsukuda Original", "Othello Multivision FG-1000", MACHINE_SUPPORTS_SAVE ) CONS( 1984, omv2000, sg1000, 0, omv, omv, driver_device, 0, "Tsukuda Original", "Othello Multivision FG-2000", MACHINE_SUPPORTS_SAVE )