// license:BSD-3-Clause // copyright-holders:Sergey Svishchev /*************************************************************************** Toshiba T1000 portable 80C88 CPU @ 5 MHz [OKI MSM80C88A-10GS-K (56 pin PQFP)] 512KB RAM + 16KB video RAM 32KB BIOS ROM [Toshiba TC54256AD] 256KB MS-DOS 2.11 ROM [Toshiba TC534000] SuperIO chip (Toshiba T7885, T7885A or T7885B) = 82C84 + 82C88 + 82C59 + upd765 + 82C53 + 82C37 + 82C55 Real Time Clock chip: TC8521P Keyboard controller: 80C50 RS232C controller: TC8570F (8250 compatible) Other chips seen on board photo: DC2131P137A DC2130P174A TC5565AFL-15 x2 TC53257F 32KB Mask ROM (chargen?) DC2___P13_A To do: - floppy - backup ram (stores config.sys) - HardRAM (static RAM board) - native keyboard (MCU dump missing) - font selector (CRTC register 0x12; DIP switches PJ20, PJ21) Useful links: - board photo: http://s8.hostingkartinok.com/uploads/images/2016/05/579e9d152bc772d9c16bc8ac611eb97f.jpg - manuals: http://www.minuszerodegrees.net/manuals/Toshiba/Toshiba.htm - http://www.seasip.info/VintagePC/t1000.html ***************************************************************************/ #include "emu.h" #include "machine/genpc.h" #include "bus/isa/isa_cards.h" #include "bus/pc_kbd/keyboards.h" #include "cpu/i86/i86.h" #include "machine/bankdev.h" #include "machine/ram.h" #include "machine/rp5c01.h" #include "machine/tosh1000_bram.h" #include "softlist.h" //#define LOG_GENERAL (1U << 0) //defined in logmacro.h already #define LOG_KEYBOARD (1U << 1) #define LOG_DEBUG (1U << 2) //#define VERBOSE (LOG_DEBUG) //#define LOG_OUTPUT_FUNC printf #include "logmacro.h" #define LOGKBD(...) LOGMASKED(LOG_KEYBOARD, __VA_ARGS__) #define LOGDBG(...) LOGMASKED(LOG_DEBUG, __VA_ARGS__) class tosh1000_state : public driver_device { public: tosh1000_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_bankdev(*this, "bankdev") , m_bram(*this, "bram") { } void tosh1000(machine_config &config); void init_tosh1000(); private: DECLARE_MACHINE_RESET(tosh1000); DECLARE_WRITE8_MEMBER(romdos_bank_w); DECLARE_READ8_MEMBER(romdos_bank_r); DECLARE_WRITE8_MEMBER(bram_w); DECLARE_READ8_MEMBER(bram_r); static void cfg_fdc_35(device_t *device); void tosh1000_io(address_map &map); void tosh1000_map(address_map &map); void tosh1000_romdos(address_map &map); required_device m_maincpu; required_device m_bankdev; required_device m_bram; enum { IDLE, READ_DATA, WRITE_DATA }; bool m_bram_latch = false; int m_bram_offset = 0; int m_bram_state = IDLE; }; void tosh1000_state::init_tosh1000() { } MACHINE_RESET_MEMBER(tosh1000_state, tosh1000) { m_bram_latch = false; m_bram_offset = 0; m_bram_state = IDLE; m_bankdev->set_bank(8); } WRITE8_MEMBER(tosh1000_state::romdos_bank_w) { LOGDBG("ROM-DOS <- %02x (%s, accessing bank %d)\n", data, BIT(data, 7)?"enable":"disable", data&7); if (BIT(data, 7)) { m_bankdev->set_bank(data & 7); } else { m_bankdev->set_bank(8); } } WRITE8_MEMBER(tosh1000_state::bram_w) { LOGDBG("BRAM %02x <- %02x\n", 0xc0 + offset, data); switch (offset) { case 1: if (m_bram_latch) { LOG("Backup RAM %02x <- %02x\n", m_bram_offset % 160, data); m_bram->write(m_bram_offset % 160, data); m_bram_offset++; } else { if (m_bram_state == WRITE_DATA) { m_bram_latch = true; m_bram_offset = 0; } } break; case 3: switch (data & 0xc0) { case 0: m_bram_state = IDLE; break; case 0x40: m_bram_state = READ_DATA; break; case 0x80: m_bram_state = WRITE_DATA; m_bram_latch = false; break; default: m_bram_state = IDLE; break; } break; } } READ8_MEMBER(tosh1000_state::bram_r) { uint8_t data = 0; switch (offset) { case 2: if (m_bram_state == READ_DATA) { data = m_bram->read(m_bram_offset % 160); LOG("BRAM @ %02x == %02x\n", m_bram_offset % 160, data); m_bram_offset++; } break; case 3: data = 0x2c; switch (m_bram_state) { case IDLE: // bit 4 -- floppy drive disk change signal break; case READ_DATA: data |= 0x43; // always ready to read (and write ??) break; case WRITE_DATA: data |= 0x82; // always ready to write break; } break; } LOGDBG("BRAM %02x == %02x\n", 0xc0 + offset, data); return data; } void tosh1000_state::tosh1000_romdos(address_map &map) { map(0x00000, 0x0ffff).rom().region("romdos", 0); map(0x10000, 0x1ffff).rom().region("romdos", 0x10000); map(0x20000, 0x2ffff).rom().region("romdos", 0x20000); map(0x30000, 0x3ffff).rom().region("romdos", 0x30000); map(0x40000, 0x4ffff).rom().region("romdos", 0x40000); map(0x50000, 0x5ffff).rom().region("romdos", 0x50000); map(0x60000, 0x6ffff).rom().region("romdos", 0x60000); map(0x70000, 0x7ffff).rom().region("romdos", 0x70000); } void tosh1000_state::tosh1000_map(address_map &map) { map.unmap_value_high(); map(0xa0000, 0xaffff).rw(m_bankdev, FUNC(address_map_bank_device::read8), FUNC(address_map_bank_device::write8)); map(0xf8000, 0xfffff).rom().region("bios", 0); } void tosh1000_state::tosh1000_io(address_map &map) { map.unmap_value_high(); map(0x0000, 0x00ff).m("mb", FUNC(ibm5160_mb_device::map)); map(0x00c0, 0x00c3).rw(FUNC(tosh1000_state::bram_r), FUNC(tosh1000_state::bram_w)); map(0x00c8, 0x00c8).w(FUNC(tosh1000_state::romdos_bank_w)); // ROM-DOS page select [p. B-15] map(0x02c0, 0x02df).rw("rtc", FUNC(tc8521_device::read), FUNC(tc8521_device::write)); } void tosh1000_state::cfg_fdc_35(device_t *device) { dynamic_cast(*device->subdevice("fdc:0")).set_default_option("35dd"); dynamic_cast(*device->subdevice("fdc:0")).set_fixed(true); dynamic_cast(*device->subdevice("fdc:1")).set_default_option(nullptr); } void tosh1000_state::tosh1000(machine_config &config) { I8088(config, m_maincpu, XTAL(5'000'000)); m_maincpu->set_addrmap(AS_PROGRAM, &tosh1000_state::tosh1000_map); m_maincpu->set_addrmap(AS_IO, &tosh1000_state::tosh1000_io); m_maincpu->set_irq_acknowledge_callback("mb:pic8259", FUNC(pic8259_device::inta_cb)); ADDRESS_MAP_BANK(config, "bankdev").set_map(&tosh1000_state::tosh1000_romdos).set_options(ENDIANNESS_LITTLE, 8, 20, 0x10000); MCFG_MACHINE_RESET_OVERRIDE(tosh1000_state, tosh1000) ibm5160_mb_device &mb(IBM5160_MOTHERBOARD(config, "mb", 0)); mb.set_cputag(m_maincpu); mb.int_callback().set_inputline(m_maincpu, 0); mb.nmi_callback().set_inputline(m_maincpu, INPUT_LINE_NMI); TC8521(config, "rtc", XTAL(32'768)); // FIXME: determine ISA bus clock ISA8_SLOT(config, "isa1", 0, "mb:isa", pc_isa8_cards, "cga", false); ISA8_SLOT(config, "isa2", 0, "mb:isa", pc_isa8_cards, "fdc_xt", false).set_option_machine_config("fdc_xt", cfg_fdc_35); ISA8_SLOT(config, "isa3", 0, "mb:isa", pc_isa8_cards, "lpt", false); ISA8_SLOT(config, "isa4", 0, "mb:isa", pc_isa8_cards, "com", false); ISA8_SLOT(config, "isa5", 0, "mb:isa", pc_isa8_cards, nullptr, false); ISA8_SLOT(config, "isa6", 0, "mb:isa", pc_isa8_cards, nullptr, false); // SOFTWARE_LIST(config, "flop_list").set_original("tosh1000"); // uses a 80C50 instead of 8042 for KBDC PC_KBDC_SLOT(config, "kbd", pc_xt_keyboards, STR_KBD_KEYTRONIC_PC3270).set_pc_kbdc_slot(subdevice("mb:pc_kbdc")); RAM(config, RAM_TAG).set_default_size("512K"); TOSH1000_BRAM(config, m_bram, 0); } ROM_START( tosh1000 ) ROM_REGION(0x8000, "bios", 0) ROM_SYSTEM_BIOS(0, "v410", "V4.10") ROMX_LOAD( "026f.27c256.ic25", 0x0000, 0x8000, CRC(a854939f) SHA1(0ff532f295a40716f53949a2fd64d02bf76d575a), ROM_BIOS(0)) ROM_REGION(0x80000, "romdos", 0) ROM_LOAD("tc534000p__b004.dos.ic26", 0x0000, 0x80000, CRC(716027f6) SHA1(563e3a7e1961d4cda216169bd1ecc66925a101aa)) /* XXX IBM 1501981(CGA) and 1501985(MDA) Character rom */ ROM_REGION(0x2000, "gfx1", 0) ROM_LOAD("5788005.u33", 0x00000, 0x2000, CRC(0bf56d70) SHA1(c2a8b10808bf51a3c123ba3eb1e9dd608231916f)) /* "AMI 8412PI // 5788005 // (C) IBM CORP. 1981 // KOREA" */ ROM_END // YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS COMP( 1987, tosh1000, ibm5150, 0, tosh1000, 0, tosh1000_state, init_tosh1000, "Toshiba", "Toshiba T1000", MACHINE_IS_SKELETON )