// license:BSD-3-Clause // copyright-holders:Sergey Svishchev /*************************************************************************** drivers/ec184x.c Driver file for EC-184x series To do: - verify ec1840 clocks etc. - did 640KB memory board exist or it's 512+128 boards? ***************************************************************************/ #include "emu.h" #include "machine/genpc.h" #include "bus/isa/xsu_cards.h" #include "bus/pc_kbd/keyboards.h" #include "bus/pc_kbd/pc_kbdc.h" #include "cpu/i86/i86.h" #include "machine/ram.h" #include "softlist_dev.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 osd_printf_info #include "logmacro.h" #define LOGKBD(...) LOGMASKED(LOG_KEYBOARD, __VA_ARGS__) #define LOGDBG(...) LOGMASKED(LOG_DEBUG, __VA_ARGS__) static constexpr int EC1841_MEMBOARD_SIZE = 512 * 1024; class ec184x_state : public driver_device { public: ec184x_state(const machine_config &mconfig, device_type type, const char *tag) : driver_device(mconfig, type, tag) , m_maincpu(*this, "maincpu") , m_ram(*this, RAM_TAG) { } void ec1840(machine_config &config); void ec1841(machine_config &config); void init_ec1840(); void init_ec1841(); private: DECLARE_MACHINE_RESET(ec1841); uint8_t memboard_r(offs_t offset); void memboard_w(offs_t offset, uint8_t data); void ec1840_io(address_map &map); void ec1840_map(address_map &map); void ec1841_io(address_map &map); void ec1841_map(address_map &map); required_device m_maincpu; required_device m_ram; struct { uint8_t enable[4]{}; int boards = 0; } m_memory; }; /* * EC-1841 memory controller. The machine can hold four memory boards; * each board has a control register, its address is set by a DIP switch * on the board itself. * * Only one board should be enabled for read, and one for write. * Normally, this is the same board. * * Each board is divided into 4 banks, internally numbered 0..3. * POST tests each board on startup, and an error (indicated by * I/O CH CK bus signal) causes it to disable failing bank(s) by writing * 'reconfiguration code' (inverted number of failing memory bank) to * the register. * bit 1-0 'reconfiguration code' * bit 2 enable read access * bit 3 enable write access */ uint8_t ec184x_state::memboard_r(offs_t offset) { uint8_t data; data = offset % 4; if (data >= m_memory.boards) data = 0xff; else data = m_memory.enable[data]; LOG("ec1841_memboard R (%d of %d) == %02X\n", offset + 1, m_memory.boards, data); return data; } void ec184x_state::memboard_w(offs_t offset, uint8_t data) { address_space &program = m_maincpu->space(AS_PROGRAM); uint8_t current = m_memory.enable[offset]; LOG("ec1841_memboard W (%d of %d) <- %02X (%02X)\n", offset + 1, m_memory.boards, data, current); if (offset >= m_memory.boards) { return; } if (BIT(current, 2) && !BIT(data, 2)) { // disable read access program.unmap_read(0, EC1841_MEMBOARD_SIZE - 1); LOG("ec1841_memboard_w unmap_read(%d)\n", offset); } if (BIT(current, 3) && !BIT(data, 3)) { // disable write access program.unmap_write(0, EC1841_MEMBOARD_SIZE - 1); LOG("ec1841_memboard_w unmap_write(%d)\n", offset); } if (!BIT(current, 2) && BIT(data, 2)) { for (int i = 0; i < 4; i++) m_memory.enable[i] &= 0xfb; // enable read access program.install_rom(0, EC1841_MEMBOARD_SIZE - 1, m_ram->pointer() + offset * EC1841_MEMBOARD_SIZE); LOG("ec1841_memboard_w map_read(%d)\n", offset); } if (!BIT(current, 3) && BIT(data, 3)) { for (int i = 0; i < 4; i++) m_memory.enable[i] &= 0xf7; // enable write access program.install_writeonly(0, EC1841_MEMBOARD_SIZE - 1, m_ram->pointer() + offset * EC1841_MEMBOARD_SIZE); LOG("ec1841_memboard_w map_write(%d)\n", offset); } m_memory.enable[offset] = data; } void ec184x_state::init_ec1840() { address_space &program = m_maincpu->space(AS_PROGRAM); program.install_ram(0, m_ram->size() - 1, m_ram->pointer()); } void ec184x_state::init_ec1841() { address_space &program = m_maincpu->space(AS_PROGRAM); m_memory.boards = m_ram->size() / EC1841_MEMBOARD_SIZE; if (m_memory.boards > 4) m_memory.boards = 4; program.install_ram(0, EC1841_MEMBOARD_SIZE - 1, m_ram->pointer()); // 640K configuration is special -- 512K board mapped at 0 + 128K board mapped at 512K if (m_ram->size() == 640 * 1024) { program.install_ram(EC1841_MEMBOARD_SIZE, m_ram->size() - 1, m_ram->pointer() + EC1841_MEMBOARD_SIZE); } } MACHINE_RESET_MEMBER(ec184x_state, ec1841) { memset(m_memory.enable, 0, sizeof(m_memory.enable)); // mark 1st board enabled m_memory.enable[0] = 0xc; } void ec184x_state::ec1840_map(address_map &map) { map.unmap_value_high(); map(0xf0000, 0xfffff).rom().region("bios", 0); } void ec184x_state::ec1841_map(address_map &map) { map.unmap_value_high(); map(0xf0000, 0xfffff).rom().region("bios", 0); } void ec184x_state::ec1840_io(address_map &map) { map.unmap_value_high(); map(0x0000, 0x00ff).m("mb", FUNC(ec1840_mb_device::map)); } void ec184x_state::ec1841_io(address_map &map) { map.unmap_value_high(); map(0x0000, 0x00ff).m("mb", FUNC(ec1841_mb_device::map)); map(0x02b0, 0x02b3).rw(FUNC(ec184x_state::memboard_r), FUNC(ec184x_state::memboard_w)); } void ec184x_state::ec1840(machine_config &config) { I8086(config, m_maincpu, 4096000); m_maincpu->set_addrmap(AS_PROGRAM, &ec184x_state::ec1840_map); m_maincpu->set_addrmap(AS_IO, &ec184x_state::ec1840_io); m_maincpu->set_irq_acknowledge_callback("mb:pic8259", FUNC(pic8259_device::inta_cb)); ec1840_mb_device &mb(EC1840_MOTHERBOARD(config, "mb")); mb.set_cputag(m_maincpu); mb.int_callback().set_inputline(m_maincpu, 0); mb.nmi_callback().set_inputline(m_maincpu, INPUT_LINE_NMI); mb.kbdclk_callback().set("kbd", FUNC(pc_kbdc_device::clock_write_from_mb)); mb.kbddata_callback().set("kbd", FUNC(pc_kbdc_device::data_write_from_mb)); // FIXME: determine ISA bus clock // 7-slot backplane, at least two slots are always taken by CPU and memory cards ISA8_SLOT(config, "isa1", 0, "mb:isa", ec184x_isa8_cards, "ec1840.0002", false); ISA8_SLOT(config, "isa2", 0, "mb:isa", ec184x_isa8_cards, "ec1840.0003", false); ISA8_SLOT(config, "isa3", 0, "mb:isa", ec184x_isa8_cards, "ec1840.0004", false); ISA8_SLOT(config, "isa4", 0, "mb:isa", ec184x_isa8_cards, nullptr, false); ISA8_SLOT(config, "isa5", 0, "mb:isa", ec184x_isa8_cards, nullptr, false); SOFTWARE_LIST(config, "flop_list").set_original("ec1841"); pc_kbdc_device &kbd(PC_KBDC(config, "kbd", pc_xt_keyboards, STR_KBD_EC_1841)); kbd.out_clock_cb().set("mb", FUNC(ec1840_mb_device::keyboard_clock_w)); kbd.out_data_cb().set("mb", FUNC(ec1840_mb_device::keyboard_data_w)); RAM(config, m_ram).set_default_size("640K").set_extra_options("128K,256K,384K,512K"); } void ec184x_state::ec1841(machine_config &config) { I8086(config, m_maincpu, XTAL(12'288'000) / 3); m_maincpu->set_addrmap(AS_PROGRAM, &ec184x_state::ec1841_map); m_maincpu->set_addrmap(AS_IO, &ec184x_state::ec1841_io); m_maincpu->set_irq_acknowledge_callback("mb:pic8259", FUNC(pic8259_device::inta_cb)); MCFG_MACHINE_RESET_OVERRIDE(ec184x_state, ec1841) ec1841_mb_device &mb(EC1841_MOTHERBOARD(config, "mb")); mb.set_cputag(m_maincpu); mb.int_callback().set_inputline(m_maincpu, 0); mb.nmi_callback().set_inputline(m_maincpu, INPUT_LINE_NMI); mb.kbdclk_callback().set("kbd", FUNC(pc_kbdc_device::clock_write_from_mb)); mb.kbddata_callback().set("kbd", FUNC(pc_kbdc_device::data_write_from_mb)); // FIXME: determine ISA bus clock ISA8_SLOT(config, "isa1", 0, "mb:isa", ec184x_isa8_cards, "ec1841.0002", false); // cga ISA8_SLOT(config, "isa2", 0, "mb:isa", ec184x_isa8_cards, "ec1841.0003", false); // fdc (IRQ6) + mouse port (IRQ2..5) ISA8_SLOT(config, "isa3", 0, "mb:isa", ec184x_isa8_cards, "ec1840.0004", false); // lpt (IRQ7||5) [+ serial (IRQx)] ISA8_SLOT(config, "isa4", 0, "mb:isa", ec184x_isa8_cards, "hdc", false); ISA8_SLOT(config, "isa5", 0, "mb:isa", ec184x_isa8_cards, nullptr, false); ISA8_SLOT(config, "isa6", 0, "mb:isa", ec184x_isa8_cards, nullptr, false); SOFTWARE_LIST(config, "flop_list").set_original("ec1841"); pc_kbdc_device &kbd(PC_KBDC(config, "kbd", pc_xt_keyboards, STR_KBD_EC_1841)); kbd.out_clock_cb().set("mb", FUNC(ec1841_mb_device::keyboard_clock_w)); kbd.out_data_cb().set("mb", FUNC(ec1841_mb_device::keyboard_data_w)); RAM(config, m_ram).set_default_size("640K").set_extra_options("512K,1024K,1576K,2048K"); } ROM_START( ec1840 ) ROM_REGION16_LE(0x10000,"bios", 0) ROM_DEFAULT_BIOS("v4") // supports MDA only ROM_SYSTEM_BIOS(0, "v1", "EC-1840.01") ROMX_LOAD("000-01.bin", 0xe000, 0x0800, CRC(c3ab1fad) SHA1(8168bdee30698f4f9aa7bbb6dfabe62dd723cec5), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("001-01.bin", 0xf000, 0x0800, CRC(601d1155) SHA1(9684d33b92743749704587a48e679ef7a3b20f9c), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("002-01.bin", 0xe001, 0x0800, CRC(ce4dddb7) SHA1(f9b1da60c848e68ff1c154d695a36a0833de4804), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("003-01.bin", 0xf001, 0x0800, CRC(14b40431) SHA1(ce7fffa41897405ee64fd4e86015e774f8bd108a), ROM_SKIP(1) | ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "v4", "EC-1840.04") ROMX_LOAD("000-04-971b.bin", 0xe000, 0x0800, CRC(06aeaee8) SHA1(9f954e4c48156d573a8e0109e7ca652be9e6036a), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("001-04-92b7.bin", 0xf000, 0x0800, CRC(3fae650a) SHA1(c98b777fdeceadd72d6eb9465b3501b9ead55a08), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("002-04-9e17.bin", 0xe001, 0x0800, CRC(d59712df) SHA1(02ea1b3ae9662f5c64c58920a32ca9db0f6fbd12), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("003-04-3ccb.bin", 0xf001, 0x0800, CRC(7fc362c7) SHA1(538e13639ad2b4c30bd72582e323181e63513306), ROM_SKIP(1) | ROM_BIOS(1)) ROM_REGION(0x2000,"gfx1", ROMREGION_ERASE00) ROM_END ROM_START( ec1841 ) ROM_REGION16_LE(0x10000,"bios", 0) ROM_DEFAULT_BIOS("v2") ROM_SYSTEM_BIOS(0, "v1", "EC-1841.01") ROMX_LOAD("012-01-3107.bin", 0xc000, 0x0800, CRC(77957396) SHA1(785f1dceb6e2b4618f5c5f0af15eb74a8c951448), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("013-01-203f.bin", 0xc001, 0x0800, CRC(768bd3d5) SHA1(2e948f2ad262de306d889b7964c3f1aad45ff5bc), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("014-01-fa40.bin", 0xd000, 0x0800, CRC(47722b58) SHA1(a6339ee8af516f834826b7828a5cf79cb650480c), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("015-01-bf1d.bin", 0xd001, 0x0800, CRC(b585b5ea) SHA1(d0ebed586eb13031477c2e071c50416682f80489), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("016-01-65f7.bin", 0xe000, 0x0800, CRC(28a07db4) SHA1(17fbcd60dacd1d3f8d8355db429f97e4d1d1ac88), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("017-01-5be1.bin", 0xe001, 0x0800, CRC(928bda26) SHA1(ee889184067e2680b29a8ef1c3a76cf5afd4c78d), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("018-01-7090.bin", 0xf000, 0x0800, CRC(75ca7d7e) SHA1(6356426820c5326a7893a437d54b02f250ef8609), ROM_SKIP(1) | ROM_BIOS(0)) ROMX_LOAD("019-01-0492.bin", 0xf001, 0x0800, CRC(8a9d593e) SHA1(f3936d2cb4e6d130dd732973f126c3aa20612463), ROM_SKIP(1) | ROM_BIOS(0)) ROM_SYSTEM_BIOS(1, "v2", "EC-1841.02") ROMX_LOAD("012-02-37f6.bin", 0xc000, 0x0800, CRC(8f5c6a20) SHA1(874b62f9cee8d3b974f33732f94eff10fc002c44), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("013-02-2552.bin", 0xc001, 0x0800, CRC(e3c10128) SHA1(d6ed743ebe9c130925c9f17aad1a45db9194c967), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("014-02-0fbe.bin", 0xd000, 0x0800, CRC(f8517e5e) SHA1(8034cd6ff5778365dc9daa494524f1753a74f1ed), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("015-02-d736.bin", 0xd001, 0x0800, CRC(8538c52a) SHA1(ee981ce90870b6546a18f2a2e64d71b0038ce0dd), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("016-02-5b2c.bin", 0xe000, 0x0800, CRC(3d1d1e67) SHA1(c527e29796537787c0f6c329f3c203f6131ca77f), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("017-02-4b9d.bin", 0xe001, 0x0800, CRC(1b985264) SHA1(5ddcb9c13564be208c5068c105444a87159c67ee), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("018-02-7090.bin", 0xf000, 0x0800, CRC(75ca7d7e) SHA1(6356426820c5326a7893a437d54b02f250ef8609), ROM_SKIP(1) | ROM_BIOS(1)) ROMX_LOAD("019-02-0493.bin", 0xf001, 0x0800, CRC(61aae23d) SHA1(7b3aa24a63ee31b194297eb1e61c3827edfcb95a), ROM_SKIP(1) | ROM_BIOS(1)) ROM_SYSTEM_BIOS(2, "v3", "EC-1841.03") ROMX_LOAD("012-03-37e7.bin", 0xc000, 0x0800, CRC(49992bd5) SHA1(119121e1b4af1c44b9b8c2edabe7dc1d3019c4a6), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("013-03-2554.bin", 0xc001, 0x0800, CRC(834bd7d7) SHA1(e37514fc4cb8a5cbe68e7564e0e07d5116c4021a), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("014-03-0fbe.bin", 0xd000, 0x0800, CRC(f8517e5e) SHA1(8034cd6ff5778365dc9daa494524f1753a74f1ed), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("015-03-d736.bin", 0xd001, 0x0800, CRC(8538c52a) SHA1(ee981ce90870b6546a18f2a2e64d71b0038ce0dd), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("016-03-5b2c.bin", 0xe000, 0x0800, CRC(3d1d1e67) SHA1(c527e29796537787c0f6c329f3c203f6131ca77f), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("017-03-4b9d.bin", 0xe001, 0x0800, CRC(1b985264) SHA1(5ddcb9c13564be208c5068c105444a87159c67ee), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("018-03-7090.bin", 0xf000, 0x0800, CRC(75ca7d7e) SHA1(6356426820c5326a7893a437d54b02f250ef8609), ROM_SKIP(1) | ROM_BIOS(2)) ROMX_LOAD("019-03-0493.bin", 0xf001, 0x0800, CRC(61aae23d) SHA1(7b3aa24a63ee31b194297eb1e61c3827edfcb95a), ROM_SKIP(1) | ROM_BIOS(2)) ROM_END ROM_START( ec1845 ) ROM_REGION16_LE(0x10000,"bios", 0) ROMX_LOAD("184500.bin", 0xc000, 0x0800, CRC(7c472ef7) SHA1(3af53f27b49bbc731bf51f9300fbada23a1bfcfc), ROM_SKIP(1)) ROMX_LOAD("184501.bin", 0xc001, 0x0800, CRC(db240dc6) SHA1(d7bb022213d09bbf2a8107fe4f1cd27b23939e18), ROM_SKIP(1)) ROMX_LOAD("184502.bin", 0xd000, 0x0800, CRC(149e7e29) SHA1(7f2a297588fef1bc750c57e6ae0d5acf3d27c486), ROM_SKIP(1)) ROMX_LOAD("184503.bin", 0xd001, 0x0800, CRC(e28cbd74) SHA1(cf1fba4e67c8e1dd8cdda547118e84b704029b03), ROM_SKIP(1)) ROMX_LOAD("184504.bin", 0xe000, 0x0800, CRC(55fa7a1d) SHA1(58f7abab08b9d2f0a1c1636e11bb72af2694c95f), ROM_SKIP(1)) ROMX_LOAD("184505.bin", 0xe001, 0x0800, CRC(c807e3f5) SHA1(08117e449f0d04f96041cff8d34893f500f3760d), ROM_SKIP(1)) ROMX_LOAD("184506.bin", 0xf000, 0x0800, CRC(24f5c27c) SHA1(7822dd7f715ef00ccf6d8408be8bbfe01c2eba20), ROM_SKIP(1)) ROMX_LOAD("184507.bin", 0xf001, 0x0800, CRC(75122203) SHA1(7b0fbdf1315230633e39574ac7360163bc7361e1), ROM_SKIP(1)) ROM_END // YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS COMP( 1986, ec1840, ibm5150, 0, ec1840, 0, ec184x_state, init_ec1840, "", "EC-1840", 0 ) COMP( 1987, ec1841, ibm5150, 0, ec1841, 0, ec184x_state, init_ec1841, "", "EC-1841", 0 ) COMP( 1989, ec1845, ibm5150, 0, ec1841, 0, ec184x_state, init_ec1841, "", "EC-1845", MACHINE_NOT_WORKING )