// license:BSD-3-Clause // copyright-holders:Carl // TODO: SCSI, requires NCR5380 BSY IRQs #include "emu.h" #include "cpu/i86/i186.h" #include "machine/wd_fdc.h" #include "machine/mc68681.h" #include "bus/nscsi/hd.h" #include "bus/rs232/rs232.h" #include "machine/ncr5380n.h" #include "imagedev/floppy.h" #include "formats/pc_dsk.h" #include "formats/naslite_dsk.h" class lb186_state : public driver_device { public: lb186_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_fdc(*this, "fdc") , m_scsi(*this, "scsibus:7:ncr5380") { } void lb186(machine_config &config); private: void sio_out_w(uint8_t data); void drive_sel_w(uint8_t data); DECLARE_FLOPPY_FORMATS( floppy_formats ); static void ncr5380(device_t *device); void lb186_io(address_map &map); void lb186_map(address_map &map); required_device m_maincpu; required_device m_fdc; required_device m_scsi; }; void lb186_state::sio_out_w(uint8_t data) { m_fdc->mr_w(BIT(data, 5)); m_maincpu->tmrin1_w(BIT(data, 3) ? ASSERT_LINE : CLEAR_LINE); } void lb186_state::drive_sel_w(uint8_t data) { m_fdc->dden_w(BIT(data, 5)); floppy_image_device *floppy; char devname[8]; unsigned int drive = data & 0xf; switch(drive) { case 0: return; case 1: drive = 0; break; case 2: drive = 1; break; case 4: drive = 2; break; case 8: drive = 3; break; default: logerror("More than one drive enabled!\n"); return; } sprintf(devname, "%d", drive); floppy = m_fdc->subdevice(devname)->get_device(); m_fdc->set_floppy(floppy); floppy->ss_w(BIT(data, 4)); } void lb186_state::lb186_map(address_map &map) { map(0x00000, 0x3ffff).ram(); // fixed 256k for now map(0xfc000, 0xfffff).rom().region("bios", 0); } void lb186_state::lb186_io(address_map &map) { map.unmap_value_high(); map(0x1000, 0x101f).rw("duart", FUNC(scn2681_device::read), FUNC(scn2681_device::write)).umask16(0x00ff); map(0x1080, 0x108f).rw(m_scsi, FUNC(ncr5380n_device::read), FUNC(ncr5380n_device::write)).umask16(0x00ff); map(0x1100, 0x1107).rw(m_fdc, FUNC(wd1772_device::read), FUNC(wd1772_device::write)).umask16(0x00ff); map(0x1180, 0x1180).rw(m_scsi, FUNC(ncr5380n_device::dma_r), FUNC(ncr5380n_device::dma_w)); map(0x1200, 0x1200).w(FUNC(lb186_state::drive_sel_w)); } static void lb186_floppies(device_slot_interface &device) { device.option_add("525dd", FLOPPY_525_DD); } void lb186_state::ncr5380(device_t *device) { devcb_base *devcb; (void)devcb; downcast(*device).irq_handler().set(":maincpu", FUNC(i80186_cpu_device::int1_w)); downcast(*device).drq_handler().set(":maincpu", FUNC(i80186_cpu_device::drq0_w)); } static void scsi_devices(device_slot_interface &device) { device.option_add("harddisk", NSCSI_HARDDISK); device.option_add_internal("ncr5380", NCR5380N); } FLOPPY_FORMATS_MEMBER( lb186_state::floppy_formats ) FLOPPY_PC_FORMAT, FLOPPY_NASLITE_FORMAT FLOPPY_FORMATS_END void lb186_state::lb186(machine_config &config) { I80186(config, m_maincpu, 16_MHz_XTAL); m_maincpu->set_addrmap(AS_PROGRAM, &lb186_state::lb186_map); m_maincpu->set_addrmap(AS_IO, &lb186_state::lb186_io); scn2681_device &duart(SCN2681(config, "duart", 3.6864_MHz_XTAL)); duart.irq_cb().set(m_maincpu, FUNC(i80186_cpu_device::int0_w)); duart.a_tx_cb().set("rs232_1", FUNC(rs232_port_device::write_txd)); duart.b_tx_cb().set("rs232_2", FUNC(rs232_port_device::write_txd)); duart.outport_cb().set(FUNC(lb186_state::sio_out_w)); rs232_port_device &rs232_1(RS232_PORT(config, "rs232_1", default_rs232_devices, "terminal")); rs232_1.rxd_handler().set("duart", FUNC(scn2681_device::rx_a_w)); rs232_port_device &rs232_2(RS232_PORT(config, "rs232_2", default_rs232_devices, nullptr)); rs232_2.rxd_handler().set("duart", FUNC(scn2681_device::rx_b_w)); WD1772(config, m_fdc, 16_MHz_XTAL / 2); m_fdc->intrq_wr_callback().set(m_maincpu, FUNC(i80186_cpu_device::int2_w)); m_fdc->drq_wr_callback().set(m_maincpu, FUNC(i80186_cpu_device::drq0_w)); FLOPPY_CONNECTOR(config, "fdc:0", lb186_floppies, "525dd", lb186_state::floppy_formats); FLOPPY_CONNECTOR(config, "fdc:1", lb186_floppies, nullptr, lb186_state::floppy_formats); FLOPPY_CONNECTOR(config, "fdc:2", lb186_floppies, nullptr, lb186_state::floppy_formats); FLOPPY_CONNECTOR(config, "fdc:3", lb186_floppies, nullptr, lb186_state::floppy_formats); NSCSI_BUS(config, "scsibus"); NSCSI_CONNECTOR(config, "scsibus:0", scsi_devices, "harddisk"); NSCSI_CONNECTOR(config, "scsibus:1", scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsibus:2", scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsibus:3", scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsibus:4", scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsibus:5", scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsibus:6", scsi_devices, nullptr); NSCSI_CONNECTOR(config, "scsibus:7", scsi_devices, "ncr5380", true).set_option_machine_config("ncr5380", lb186_state::ncr5380); } ROM_START( lb186 ) ROM_REGION16_LE(0x4000, "bios", 0) ROM_SYSTEM_BIOS(0, "v335", "BIOS Version 3.35") // 28 January 1987 ROMX_LOAD("a75515_v3.35.rom", 0x0000, 0x2000, CRC(245824fb) SHA1(b39ed91d421513f5912fdbc290aaa3f1b7d4f1e0), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("a75516_v3.35.rom", 0x0001, 0x2000, CRC(9d9a5e22) SHA1(070be31c622f50508e8cbdb797c79978b6a4b8f6), ROM_SKIP(1) | ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "ramdisk", "RAM Disk BIOS Version 1.00") ROMX_LOAD("a75523.rom", 0x0000, 0x2000, CRC(2d22e826) SHA1(e366e489f580b440131ad5212722391b60af90cd), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("a75524.rom", 0x0001, 0x2000, CRC(9c9b249c) SHA1(e988e92d9fa6fe66f89ef748021e9a0501d2807e), ROM_SKIP(1) | ROM_BIOS(1)) ROM_END COMP( 1985, lb186, 0, 0, lb186, 0, lb186_state, empty_init, "Ampro Computers", "Little Board/186", MACHINE_NO_SOUND_HW )