// license:BSD-3-Clause // copyright-holders:Curt Coder /**************************************************************************************************** XOR S-100-12 XOR Data Science was apparently a 1982 reincorporation of a Huntington Beach-based company previously known as Delta Products. At least some of the S-100 boards used in XOR's systems were originally developed and documented under the former company name. ***************************************************************************************************** All input must be in upper case. Summary of Monitor commands: D xxxx yyyy = dump memory to screen F xxxx yyyy zz = fill memory from xxxx to yyyy-1 with zz G xxxx = execute program at xxxx H xxxx yyyy aa bb... = Search memory for a string of bytes L xxxx = edit memory (. to exit) M xxxx yyyy zzzz = Move (copy) memory V xxxx = Ascii dump of memory to the screen (cr to continue, space to exit) X n = Select a bank (0 works, others freeze) Note some of the commands are a bit buggy, eg F doesn't fill the last byte *****************************************************************************************************/ /* TODO: - cannot boot from floppy (at prompt press ^C, wait, it says 'Drive not ready') - honor jumper settings - CTC signal header - serial printer - cassette? (no mention of it in the manuals) */ #include "emu.h" #include "includes/xor100.h" #include "bus/rs232/rs232.h" /* Read/Write Handlers */ enum { EPROM_0000 = 0, EPROM_F800, EPROM_OFF }; void xor100_state::bankswitch() { address_space &program = m_maincpu->space(AS_PROGRAM); int banks = m_ram->size() / 0x10000; switch (m_mode) { case EPROM_0000: if (m_bank < banks) { program.install_write_bank(0x0000, 0xffff, "bank1"); membank("bank1")->set_entry(1 + m_bank); } else { program.unmap_write(0x0000, 0xffff); } program.install_read_bank(0x0000, 0x07ff, 0xf000, "bank2"); program.install_read_bank(0xf800, 0xffff, "bank3"); membank("bank2")->set_entry(0); membank("bank3")->set_entry(0); break; case EPROM_F800: if (m_bank < banks) { program.install_write_bank(0x0000, 0xffff, "bank1"); program.install_read_bank(0x0000, 0xf7ff, "bank2"); membank("bank1")->set_entry(1 + m_bank); membank("bank2")->set_entry(1 + m_bank); } else { program.unmap_write(0x0000, 0xffff); program.unmap_read(0x0000, 0xf7ff); } program.install_read_bank(0xf800, 0xffff, "bank3"); membank("bank3")->set_entry(0); break; case EPROM_OFF: if (m_bank < banks) { program.install_write_bank(0x0000, 0xffff, "bank1"); program.install_read_bank(0x0000, 0xf7ff, "bank2"); program.install_read_bank(0xf800, 0xffff, "bank3"); membank("bank1")->set_entry(1 + m_bank); membank("bank2")->set_entry(1 + m_bank); membank("bank3")->set_entry(1 + m_bank); } else { program.unmap_write(0x0000, 0xffff); program.unmap_read(0x0000, 0xf7ff); program.unmap_read(0xf800, 0xffff); } break; } } WRITE8_MEMBER( xor100_state::mmu_w ) { /* bit description 0 A16 1 A17 2 A18 3 A19 4 5 6 7 */ m_bank = data & 0x07; bankswitch(); } WRITE8_MEMBER( xor100_state::prom_toggle_w ) { switch (m_mode) { case EPROM_OFF: m_mode = EPROM_F800; break; case EPROM_F800: m_mode = EPROM_OFF; break; } bankswitch(); } READ8_MEMBER( xor100_state::prom_disable_r ) { m_mode = EPROM_F800; bankswitch(); return 0xff; } WRITE8_MEMBER( xor100_state::baud_w ) { m_dbrg->str_w(data & 0x0f); m_dbrg->stt_w(data >> 4); } READ8_MEMBER( xor100_state::fdc_r ) { return m_fdc->gen_r(offset) ^ 0xff; } WRITE8_MEMBER( xor100_state::fdc_w ) { m_fdc->gen_w(offset, data ^ 0xff); } READ8_MEMBER( xor100_state::fdc_wait_r ) { /* bit description 0 1 2 3 4 5 6 7 FDC IRQ */ if (!machine().side_effects_disabled()) { if (!m_fdc_irq && !m_fdc_drq) { fatalerror("Z80 WAIT not supported by MAME core\n"); m_maincpu->set_input_line(Z80_INPUT_LINE_BOGUSWAIT, ASSERT_LINE); } } return !m_fdc_irq << 7; } WRITE8_MEMBER( xor100_state::fdc_dcont_w ) { /* bit description 0 DS0 1 DS1 2 DS2 3 DS3 4 5 6 7 _HLSTB */ // drive select floppy_image_device *floppy = nullptr; if (BIT(data, 0)) floppy = m_floppy0->get_device(); if (BIT(data, 1)) floppy = m_floppy1->get_device(); if (BIT(data, 2)) floppy = m_floppy2->get_device(); if (BIT(data, 3)) floppy = m_floppy3->get_device(); m_fdc->set_floppy(floppy); if (floppy) floppy->mon_w(0); } WRITE8_MEMBER( xor100_state::fdc_dsel_w ) { /* bit description 0 J 1 K 2 3 4 5 6 7 */ switch (data & 0x03) { case 0: break; case 1: m_fdc_dden = 1; break; case 2: m_fdc_dden = 0; break; case 3: m_fdc_dden = !m_fdc_dden; break; } m_fdc->dden_w(m_fdc_dden); } /* Memory Maps */ void xor100_state::xor100_mem(address_map &map) { map(0x0000, 0xffff).bankw("bank1"); map(0x0000, 0xf7ff).bankr("bank2"); map(0xf800, 0xffff).bankr("bank3"); } void xor100_state::xor100_io(address_map &map) { map.global_mask(0xff); map(0x00, 0x00).rw(m_uart_a, FUNC(i8251_device::data_r), FUNC(i8251_device::data_w)); map(0x01, 0x01).rw(m_uart_a, FUNC(i8251_device::status_r), FUNC(i8251_device::control_w)); map(0x02, 0x02).rw(m_uart_b, FUNC(i8251_device::data_r), FUNC(i8251_device::data_w)); map(0x03, 0x03).rw(m_uart_b, FUNC(i8251_device::status_r), FUNC(i8251_device::control_w)); map(0x04, 0x07).rw(I8255A_TAG, FUNC(i8255_device::read), FUNC(i8255_device::write)); map(0x08, 0x08).w(this, FUNC(xor100_state::mmu_w)); map(0x09, 0x09).w(this, FUNC(xor100_state::prom_toggle_w)); map(0x0a, 0x0a).r(this, FUNC(xor100_state::prom_disable_r)); map(0x0b, 0x0b).portr("DSW0").w(this, FUNC(xor100_state::baud_w)); map(0x0c, 0x0f).rw(m_ctc, FUNC(z80ctc_device::read), FUNC(z80ctc_device::write)); map(0xf8, 0xfb).rw(this, FUNC(xor100_state::fdc_r), FUNC(xor100_state::fdc_w)); map(0xfc, 0xfc).rw(this, FUNC(xor100_state::fdc_wait_r), FUNC(xor100_state::fdc_dcont_w)); map(0xfd, 0xfd).w(this, FUNC(xor100_state::fdc_dsel_w)); } /* Input Ports */ static INPUT_PORTS_START( xor100 ) PORT_START("DSW0") PORT_DIPNAME( 0x0f, 0x05, "Serial Port A" ) PORT_DIPSETTING( 0x00, "50 baud" ) PORT_DIPSETTING( 0x01, "75 baud" ) PORT_DIPSETTING( 0x02, "110 baud" ) PORT_DIPSETTING( 0x03, "134.5 baud" ) PORT_DIPSETTING( 0x04, "150 baud" ) PORT_DIPSETTING( 0x05, "300 baud" ) PORT_DIPSETTING( 0x06, "600 baud" ) PORT_DIPSETTING( 0x07, "1200 baud" ) PORT_DIPSETTING( 0x08, "1800 baud" ) PORT_DIPSETTING( 0x09, "2000 baud" ) PORT_DIPSETTING( 0x0a, "2400 baud" ) PORT_DIPSETTING( 0x0b, "3600 baud" ) PORT_DIPSETTING( 0x0c, "4800 baud" ) PORT_DIPSETTING( 0x0d, "7200 baud" ) PORT_DIPSETTING( 0x0e, "9600 baud" ) PORT_DIPSETTING( 0x0f, "19200 baud" ) PORT_DIPNAME( 0xf0, 0xe0, "Serial Port B" ) PORT_DIPSETTING( 0x00, "50 baud" ) PORT_DIPSETTING( 0x10, "75 baud" ) PORT_DIPSETTING( 0x20, "110 baud" ) PORT_DIPSETTING( 0x30, "134.5 baud" ) PORT_DIPSETTING( 0x40, "150 baud" ) PORT_DIPSETTING( 0x50, "300 baud" ) PORT_DIPSETTING( 0x60, "600 baud" ) PORT_DIPSETTING( 0x70, "1200 baud" ) PORT_DIPSETTING( 0x80, "1800 baud" ) PORT_DIPSETTING( 0x90, "2000 baud" ) PORT_DIPSETTING( 0xa0, "2400 baud" ) PORT_DIPSETTING( 0xb0, "3600 baud" ) PORT_DIPSETTING( 0xc0, "4800 baud" ) PORT_DIPSETTING( 0xd0, "7200 baud" ) PORT_DIPSETTING( 0xe0, "9600 baud" ) PORT_DIPSETTING( 0xf0, "19200 baud" ) PORT_START("J1") PORT_CONFNAME( 0x01, 0x01, "J1 Wait State") PORT_CONFSETTING( 0x00, "No Wait States" ) PORT_CONFSETTING( 0x01, "1 M1 Wait State" ) PORT_START("J2") PORT_CONFNAME( 0x01, 0x01, "J2 CPU Speed") PORT_CONFSETTING( 0x00, "2 MHz" ) PORT_CONFSETTING( 0x01, "4 MHz" ) PORT_START("J3") PORT_CONFNAME( 0x01, 0x00, "J3") PORT_CONFSETTING( 0x00, "" ) PORT_CONFSETTING( 0x01, "" ) PORT_START("J4-J5") PORT_CONFNAME( 0x01, 0x01, "J4/J5 EPROM Type") PORT_CONFSETTING( 0x00, "2708" ) PORT_CONFSETTING( 0x01, "2716" ) PORT_START("J6") PORT_CONFNAME( 0x01, 0x01, "J6 EPROM") PORT_CONFSETTING( 0x00, "Disabled" ) PORT_CONFSETTING( 0x01, "Enabled" ) PORT_START("J7") PORT_CONFNAME( 0x01, 0x00, "J7 I/O Port Addresses") PORT_CONFSETTING( 0x00, "00-0F" ) PORT_CONFSETTING( 0x01, "10-1F" ) PORT_START("J8") PORT_CONFNAME( 0x01, 0x00, "J8") PORT_CONFSETTING( 0x00, "" ) PORT_CONFSETTING( 0x01, "" ) PORT_START("J9") PORT_CONFNAME( 0x01, 0x01, "J9 Power On RAM") PORT_CONFSETTING( 0x00, "Enabled" ) PORT_CONFSETTING( 0x01, "Disabled" ) INPUT_PORTS_END /* Printer 8255A Interface */ WRITE_LINE_MEMBER( xor100_state::write_centronics_busy ) { m_centronics_busy = state; } WRITE_LINE_MEMBER( xor100_state::write_centronics_select ) { m_centronics_select = state; } READ8_MEMBER(xor100_state::i8255_pc_r) { /* bit description PC0 PC1 PC2 PC3 PC4 ON LINE PC5 BUSY PC6 _ACK PC7 */ uint8_t data = 0; /* on line */ data |= m_centronics_select << 4; /* busy */ data |= m_centronics_busy << 5; return data; } /* Z80-CTC Interface */ WRITE_LINE_MEMBER( xor100_state::ctc_z0_w ) { } WRITE_LINE_MEMBER( xor100_state::ctc_z1_w ) { } WRITE_LINE_MEMBER( xor100_state::ctc_z2_w ) { } /* WD1795-02 Interface */ static void xor100_floppies(device_slot_interface &device) { device.option_add("8ssdd", FLOPPY_8_SSDD); // Shugart SA-100 } void xor100_state::fdc_intrq_w(bool state) { m_fdc_irq = state; m_ctc->trg0(state); if (state) { fatalerror("Z80 WAIT not supported by MAME core\n"); m_maincpu->set_input_line(Z80_INPUT_LINE_BOGUSWAIT, ASSERT_LINE); } } void xor100_state::fdc_drq_w(bool state) { m_fdc_drq = state; if (state) { fatalerror("Z80 WAIT not supported by MAME core\n"); m_maincpu->set_input_line(Z80_INPUT_LINE_BOGUSWAIT, ASSERT_LINE); } } static DEVICE_INPUT_DEFAULTS_START( terminal ) DEVICE_INPUT_DEFAULTS( "RS232_TXBAUD", 0xff, RS232_BAUD_9600 ) DEVICE_INPUT_DEFAULTS( "RS232_RXBAUD", 0xff, RS232_BAUD_9600 ) DEVICE_INPUT_DEFAULTS( "RS232_STARTBITS", 0xff, RS232_STARTBITS_1 ) DEVICE_INPUT_DEFAULTS( "RS232_DATABITS", 0xff, RS232_DATABITS_8 ) DEVICE_INPUT_DEFAULTS( "RS232_PARITY", 0xff, RS232_PARITY_NONE ) DEVICE_INPUT_DEFAULTS( "RS232_STOPBITS", 0xff, RS232_STOPBITS_1 ) DEVICE_INPUT_DEFAULTS_END static void xor100_s100_cards(device_slot_interface &device) { } /* Machine Initialization */ void xor100_state::machine_start() { int banks = m_ram->size() / 0x10000; uint8_t *ram = m_ram->pointer(); uint8_t *rom = m_rom->base(); /* setup memory banking */ membank("bank1")->configure_entries(1, banks, ram, 0x10000); membank("bank2")->configure_entry(0, rom); membank("bank2")->configure_entries(1, banks, ram, 0x10000); membank("bank3")->configure_entry(0, rom); membank("bank3")->configure_entries(1, banks, ram + 0xf800, 0x10000); machine().save().register_postload(save_prepost_delegate(FUNC(xor100_state::post_load), this)); /* register for state saving */ save_item(NAME(m_mode)); save_item(NAME(m_bank)); save_item(NAME(m_fdc_irq)); save_item(NAME(m_fdc_drq)); save_item(NAME(m_fdc_dden)); save_item(NAME(m_centronics_busy)); save_item(NAME(m_centronics_select)); } void xor100_state::machine_reset() { m_mode = EPROM_0000; bankswitch(); } void xor100_state::post_load() { bankswitch(); } /* Machine Driver */ MACHINE_CONFIG_START(xor100_state::xor100) /* basic machine hardware */ MCFG_DEVICE_ADD(Z80_TAG, Z80, XTAL(8'000'000)/2) MCFG_DEVICE_PROGRAM_MAP(xor100_mem) MCFG_DEVICE_IO_MAP(xor100_io) /* devices */ MCFG_DEVICE_ADD(I8251_A_TAG, I8251, 0/*XTAL(8'000'000)/2,*/) MCFG_I8251_TXD_HANDLER(WRITELINE(RS232_A_TAG, rs232_port_device, write_txd)) MCFG_I8251_DTR_HANDLER(WRITELINE(RS232_A_TAG, rs232_port_device, write_dtr)) MCFG_I8251_RTS_HANDLER(WRITELINE(RS232_A_TAG, rs232_port_device, write_rts)) MCFG_DEVICE_ADD(RS232_A_TAG, RS232_PORT, default_rs232_devices, nullptr) MCFG_RS232_RXD_HANDLER(WRITELINE(I8251_A_TAG, i8251_device, write_rxd)) MCFG_RS232_DSR_HANDLER(WRITELINE(I8251_A_TAG, i8251_device, write_dsr)) MCFG_DEVICE_ADD(I8251_B_TAG, I8251, 0/*XTAL(8'000'000)/2,*/) MCFG_I8251_TXD_HANDLER(WRITELINE(RS232_B_TAG, rs232_port_device, write_txd)) MCFG_I8251_DTR_HANDLER(WRITELINE(RS232_B_TAG, rs232_port_device, write_dtr)) MCFG_I8251_RTS_HANDLER(WRITELINE(RS232_B_TAG, rs232_port_device, write_rts)) MCFG_DEVICE_ADD(RS232_B_TAG, RS232_PORT, default_rs232_devices, "terminal") MCFG_RS232_RXD_HANDLER(WRITELINE(I8251_B_TAG, i8251_device, write_rxd)) MCFG_RS232_DSR_HANDLER(WRITELINE(I8251_B_TAG, i8251_device, write_dsr)) MCFG_RS232_CTS_HANDLER(WRITELINE(I8251_B_TAG, i8251_device, write_cts)) MCFG_SLOT_OPTION_DEVICE_INPUT_DEFAULTS("terminal", terminal) MCFG_DEVICE_ADD(COM5016_TAG, COM8116, XTAL(5'068'800)) MCFG_COM8116_FR_HANDLER(WRITELINE(I8251_A_TAG, i8251_device, write_txc)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE(I8251_A_TAG, i8251_device, write_rxc)) MCFG_COM8116_FT_HANDLER(WRITELINE(I8251_B_TAG, i8251_device, write_txc)) MCFG_DEVCB_CHAIN_OUTPUT(WRITELINE(I8251_B_TAG, i8251_device, write_rxc)) MCFG_DEVICE_ADD(I8255A_TAG, I8255A, 0) MCFG_I8255_OUT_PORTA_CB(WRITE8("cent_data_out", output_latch_device, write)) MCFG_I8255_OUT_PORTB_CB(WRITELINE(CENTRONICS_TAG, centronics_device, write_strobe)) MCFG_I8255_IN_PORTC_CB(READ8(*this, xor100_state, i8255_pc_r)) MCFG_DEVICE_ADD(Z80CTC_TAG, Z80CTC, XTAL(8'000'000)/2) MCFG_Z80CTC_INTR_CB(INPUTLINE(Z80_TAG, INPUT_LINE_IRQ0)) MCFG_Z80CTC_ZC0_CB(WRITELINE(*this, xor100_state, ctc_z0_w)) MCFG_Z80CTC_ZC1_CB(WRITELINE(*this, xor100_state, ctc_z1_w)) MCFG_Z80CTC_ZC2_CB(WRITELINE(*this, xor100_state, ctc_z2_w)) MCFG_FD1795_ADD(WD1795_TAG, XTAL(8'000'000)/4) MCFG_FLOPPY_DRIVE_ADD(WD1795_TAG":0", xor100_floppies, "8ssdd", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD(WD1795_TAG":1", xor100_floppies, "8ssdd", floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD(WD1795_TAG":2", xor100_floppies, nullptr, floppy_image_device::default_floppy_formats) MCFG_FLOPPY_DRIVE_ADD(WD1795_TAG":3", xor100_floppies, nullptr, floppy_image_device::default_floppy_formats) MCFG_CENTRONICS_ADD(CENTRONICS_TAG, centronics_devices, "printer") MCFG_CENTRONICS_ACK_HANDLER(WRITELINE(I8255A_TAG, i8255_device, pc4_w)) MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE(*this, xor100_state, write_centronics_busy)) MCFG_CENTRONICS_SELECT_HANDLER(WRITELINE(*this, xor100_state, write_centronics_select)) MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics") // S-100 MCFG_DEVICE_ADD(S100_TAG, S100_BUS, XTAL(8'000'000)/4) MCFG_S100_RDY_CALLBACK(INPUTLINE(Z80_TAG, Z80_INPUT_LINE_BOGUSWAIT)) MCFG_S100_SLOT_ADD(S100_TAG ":1", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":2", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":3", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":4", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":5", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":6", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":7", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":8", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":9", xor100_s100_cards, nullptr) MCFG_S100_SLOT_ADD(S100_TAG ":10", xor100_s100_cards, nullptr) /* internal ram */ MCFG_RAM_ADD(RAM_TAG) MCFG_RAM_DEFAULT_SIZE("64K") MCFG_RAM_EXTRA_OPTIONS("128K,192K,256K,320K,384K,448K,512K") MACHINE_CONFIG_END /* ROMs */ ROM_START( xor100 ) ROM_REGION( 0x800, Z80_TAG, 0 ) ROM_SYSTEM_BIOS( 0, "v185", "v1.85" ) ROMX_LOAD( "xp 185.8b", 0x000, 0x800, CRC(0d0bda8d) SHA1(11c83f7cd7e6a570641b44a2f2cc5737a7dd8ae3), ROM_BIOS(1) ) ROM_END /* System Drivers */ // YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS COMP( 1980, xor100, 0, 0, xor100, xor100, xor100_state, empty_init, "XOR Data Science", "XOR S-100-12", MACHINE_SUPPORTS_SAVE | MACHINE_NO_SOUND_HW )