diff options
Diffstat (limited to 'src/mame/drivers/mc1502.cpp')
-rw-r--r-- | src/mame/drivers/mc1502.cpp | 396 |
1 files changed, 0 insertions, 396 deletions
diff --git a/src/mame/drivers/mc1502.cpp b/src/mame/drivers/mc1502.cpp deleted file mode 100644 index 99107023d23..00000000000 --- a/src/mame/drivers/mc1502.cpp +++ /dev/null @@ -1,396 +0,0 @@ -// license:BSD-3-Clause -// copyright-holders:Sergey Svishchev -/*************************************************************************** - - drivers/mc1502.cpp - - Driver file for Elektronika MS 1502 - - To do: - - fix video errors caused by 465caf8038a120b4c1ffad9df67a1dc7474e5bb1 - "cga: treat as fixed sync monitor (nw)" - - debug video init in BIOS 7.2 - - pk88 (video, keyboard, etc.) - -***************************************************************************/ - -#include "emu.h" -#include "includes/mc1502.h" - -#include "bus/rs232/rs232.h" -#include "cpu/i86/i86.h" -#include "machine/kb_7007_3.h" - -#include "softlist.h" -#include "speaker.h" - - -//#define LOG_GENERAL (1U << 0) //defined in logmacro.h already -#define LOG_KEYBOARD (1U << 1) -#define LOG_PPI (1U << 2) - -//#define VERBOSE (LOG_GENERAL | LOG_VRAM) -//#define LOG_OUTPUT_STREAM std::cout - -#include "logmacro.h" - -#define LOGKBD(...) LOGMASKED(LOG_KEYBOARD, __VA_ARGS__) -#define LOGPPI(...) LOGMASKED(LOG_PPI, __VA_ARGS__) - - -/* - * onboard devices: - */ - -// Timer - -/* check if any keys are pressed, raise IRQ1 if so */ - -TIMER_CALLBACK_MEMBER(mc1502_state::keyb_signal_callback) -{ - uint8_t key = 0; - - for (int i = 0; i < 12; i++) - { - key |= m_kbdio[i]->read(); - } - - LOGKBD("k_s_c = %02X (%d) %s\n", key, m_kbd.pulsing, (key || m_kbd.pulsing) ? " will IRQ" : ""); - - /* - If a key is pressed and we're not pulsing yet, start pulsing the IRQ1; - keep pulsing while any key is pressed, and pulse one time after all keys - are released. - */ - if (key) - { - if (m_kbd.pulsing < 2) - { - m_kbd.pulsing += 2; - } - } - - if (m_kbd.pulsing) - { - m_pic8259->ir1_w(m_kbd.pulsing & 1); - m_kbd.pulsing--; - } -} - -WRITE8_MEMBER(mc1502_state::mc1502_ppi_portb_w) -{ - m_ppi_portb = data; - m_pit8253->write_gate2(BIT(data, 0)); - mc1502_speaker_set_spkrdata(BIT(data, 1)); - m_centronics->write_strobe(BIT(data, 2)); - m_centronics->write_autofd(BIT(data, 3)); - m_centronics->write_init(BIT(data, 4)); -} - -// bit 0: parallel port data transfer direction (default = 0 = out) -// bits 1-2: CGA_FONT (default = 01) -// bit 3: i8251 SYNDET pin triggers NMI (default = 1 = no) -WRITE8_MEMBER(mc1502_state::mc1502_ppi_portc_w) -{ - m_ppi_portc = data & 15; -} - -// 0x80 -- serial RxD -// 0x40 -- CASS IN, also loops back T2OUT (gated by CASWR) -// 0x20 -- T2OUT -// 0x10 -- SNDOUT -READ8_MEMBER(mc1502_state::mc1502_ppi_portc_r) -{ - int data = 0xff; - double tap_val = m_cassette->input(); - - data = (data & ~0x40) | (tap_val < 0 ? 0x40 : 0x00) | ((BIT(m_ppi_portb, 7) && m_pit_out2) ? 0x40 : 0x00); - data = (data & ~0x20) | (m_pit_out2 ? 0x20 : 0x00); - data = (data & ~0x10) | ((BIT(m_ppi_portb, 1) && m_pit_out2) ? 0x10 : 0x00); - - LOGPPI("mc1502_ppi_portc_r = %02X (tap_val %f t2out %d) at %s\n", - data, tap_val, m_pit_out2, machine().describe_context()); - return data; -} - -READ8_MEMBER(mc1502_state::mc1502_kppi_porta_r) -{ - uint8_t key = 0; - - for (int i = 0; i < 12; i++) - { - if (BIT(m_kbd.mask, i)) - { - key |= m_kbdio[i]->read(); - } - } - - key ^= 0xff; - LOGPPI("mc1502_kppi_porta_r = %02X\n", key); - return key; -} - -WRITE8_MEMBER(mc1502_state::mc1502_kppi_portb_w) -{ - m_kbd.mask &= ~255; - m_kbd.mask |= data ^ 255; - if (!BIT(data, 0)) - m_kbd.mask |= 1 << 11; - else - m_kbd.mask &= ~(1 << 11); - LOGPPI("mc1502_kppi_portb_w ( %02X -> %04X )\n", data, m_kbd.mask); -} - -WRITE8_MEMBER(mc1502_state::mc1502_kppi_portc_w) -{ - m_kbd.mask &= ~(7 << 8); - m_kbd.mask |= ((data ^ 7) & 7) << 8; - LOGPPI("mc1502_kppi_portc_w ( %02X -> %04X )\n", data, m_kbd.mask); -} - -WRITE_LINE_MEMBER(mc1502_state::mc1502_i8251_syndet) -{ - if (!BIT(m_ppi_portc, 3)) - m_maincpu->set_input_line(INPUT_LINE_NMI, state ? ASSERT_LINE : CLEAR_LINE); -} - -WRITE_LINE_MEMBER(mc1502_state::mc1502_pit8253_out1_changed) -{ - m_upd8251->write_txc(state); - m_upd8251->write_rxc(state); -} - -WRITE_LINE_MEMBER(mc1502_state::mc1502_pit8253_out2_changed) -{ - m_pit_out2 = state; - m_speaker->level_w(m_spkrdata & m_pit_out2); - m_cassette->output(state ? 1 : -1); -} - -WRITE_LINE_MEMBER(mc1502_state::mc1502_speaker_set_spkrdata) -{ - m_spkrdata = state ? 1 : 0; - m_speaker->level_w(m_spkrdata & m_pit_out2); -} - -void mc1502_state::init_mc1502() -{ - address_space &program = m_maincpu->space(AS_PROGRAM); - - program.install_readwrite_bank(0, m_ram->size() - 1, "bank10"); - membank("bank10")->set_base(m_ram->pointer()); -} - -MACHINE_START_MEMBER(mc1502_state, mc1502) -{ - /* - Keyboard polling circuit holds IRQ1 high until a key is - pressed, then it starts a timer that pulses IRQ1 low each - 40ms (check) for 20ms (check) until all keys are released. - Last pulse causes BIOS to write a 'break' scancode into port 60h. - */ - m_pic8259->ir1_w(1); - memset(&m_kbd, 0, sizeof(m_kbd)); - m_kbd.keyb_signal_timer = - machine().scheduler().timer_alloc(timer_expired_delegate(FUNC(mc1502_state::keyb_signal_callback), this)); - m_kbd.keyb_signal_timer->adjust(attotime::from_msec(20), 0, attotime::from_msec(20)); -} - -MACHINE_RESET_MEMBER(mc1502_state, mc1502) -{ - m_spkrdata = 0; - m_pit_out2 = 1; - m_ppi_portb = 0; - m_ppi_portc = 0; - m_speaker->level_w(0); -} - -/* - * macros - */ - -void mc1502_state::mc1502_map(address_map &map) -{ - map.unmap_value_high(); - map(0xf0000, 0xfffff).rom().region("bios", 0); -} - -void mc1502_state::mc1502_io(address_map &map) -{ - map(0x0020, 0x0021).rw(m_pic8259, FUNC(pic8259_device::read), FUNC(pic8259_device::write)); - map(0x0028, 0x0029).rw(m_upd8251, FUNC(i8251_device::read), FUNC(i8251_device::write)); - map(0x0040, 0x0043).rw(m_pit8253, FUNC(pit8253_device::read), FUNC(pit8253_device::write)); - map(0x0060, 0x0063).rw(m_ppi8255n1, FUNC(i8255_device::read), FUNC(i8255_device::write)); - map(0x0068, 0x006B).rw(m_ppi8255n2, FUNC(i8255_device::read), FUNC(i8255_device::write)); // keyboard poll -} - -static INPUT_PORTS_START( mc1502 ) - PORT_INCLUDE( mc7007_3_keyboard ) -INPUT_PORTS_END - -void mc1502_state::mc1502(machine_config &config) -{ - I8088(config, m_maincpu, XTAL(16'000'000)/3); - m_maincpu->set_addrmap(AS_PROGRAM, &mc1502_state::mc1502_map); - m_maincpu->set_addrmap(AS_IO, &mc1502_state::mc1502_io); - m_maincpu->set_irq_acknowledge_callback("pic8259", FUNC(pic8259_device::inta_cb)); - - MCFG_MACHINE_START_OVERRIDE( mc1502_state, mc1502 ) - MCFG_MACHINE_RESET_OVERRIDE( mc1502_state, mc1502 ) - - PIT8253(config, m_pit8253); - m_pit8253->set_clk<0>(XTAL(16'000'000)/12); /* heartbeat IRQ */ - m_pit8253->out_handler<0>().set(m_pic8259, FUNC(pic8259_device::ir0_w)); - m_pit8253->set_clk<1>(XTAL(16'000'000)/12); /* serial port */ - m_pit8253->out_handler<1>().set(FUNC(mc1502_state::mc1502_pit8253_out1_changed)); - m_pit8253->set_clk<2>(XTAL(16'000'000)/12); /* pio port c pin 4, and speaker polling enough */ - m_pit8253->out_handler<2>().set(FUNC(mc1502_state::mc1502_pit8253_out2_changed)); - - PIC8259(config, m_pic8259); - m_pic8259->out_int_callback().set_inputline(m_maincpu, 0); - - I8255(config, m_ppi8255n1); - m_ppi8255n1->out_pa_callback().set("cent_data_out", FUNC(output_latch_device::bus_w)); - m_ppi8255n1->out_pb_callback().set(FUNC(mc1502_state::mc1502_ppi_portb_w)); - m_ppi8255n1->in_pc_callback().set(FUNC(mc1502_state::mc1502_ppi_portc_r)); - m_ppi8255n1->out_pc_callback().set(FUNC(mc1502_state::mc1502_ppi_portc_w)); - - I8255(config, m_ppi8255n2); - m_ppi8255n2->in_pa_callback().set(FUNC(mc1502_state::mc1502_kppi_porta_r)); - m_ppi8255n2->out_pb_callback().set(FUNC(mc1502_state::mc1502_kppi_portb_w)); - m_ppi8255n2->in_pc_callback().set("cent_status_in", FUNC(input_buffer_device::bus_r)); - m_ppi8255n2->out_pc_callback().set(FUNC(mc1502_state::mc1502_kppi_portc_w)); - - I8251(config, m_upd8251, 0); - m_upd8251->txd_handler().set("rs232", FUNC(rs232_port_device::write_txd)); - m_upd8251->dtr_handler().set("rs232", FUNC(rs232_port_device::write_dtr)); - m_upd8251->rts_handler().set("rs232", FUNC(rs232_port_device::write_rts)); - /* XXX RxD data are accessible via PPI port C, bit 7 */ - m_upd8251->rxrdy_handler().set(m_pic8259, FUNC(pic8259_device::ir7_w)); /* default handler does nothing */ - m_upd8251->txrdy_handler().set(m_pic8259, FUNC(pic8259_device::ir7_w)); - m_upd8251->syndet_handler().set(FUNC(mc1502_state::mc1502_i8251_syndet)); - - rs232_port_device &rs232(RS232_PORT(config, "rs232", default_rs232_devices, nullptr)); - rs232.rxd_handler().set(m_upd8251, FUNC(i8251_device::write_rxd)); - rs232.dsr_handler().set(m_upd8251, FUNC(i8251_device::write_dsr)); - rs232.cts_handler().set(m_upd8251, FUNC(i8251_device::write_cts)); - - isa8_device &isa(ISA8(config, "isa", 0)); - isa.set_memspace("maincpu", AS_PROGRAM); - isa.set_iospace("maincpu", AS_IO); - isa.irq2_callback().set(m_pic8259, FUNC(pic8259_device::ir2_w)); - isa.irq3_callback().set(m_pic8259, FUNC(pic8259_device::ir3_w)); - isa.irq4_callback().set(m_pic8259, FUNC(pic8259_device::ir4_w)); - isa.irq5_callback().set(m_pic8259, FUNC(pic8259_device::ir5_w)); - isa.irq6_callback().set(m_pic8259, FUNC(pic8259_device::ir6_w)); - isa.irq7_callback().set(m_pic8259, FUNC(pic8259_device::ir7_w)); - - ISA8_SLOT(config, "board0", 0, "isa", mc1502_isa8_cards, "cga_mc1502", true); // FIXME: determine ISA bus clock - ISA8_SLOT(config, "isa1", 0, "isa", mc1502_isa8_cards, "fdc", false); - ISA8_SLOT(config, "isa2", 0, "isa", mc1502_isa8_cards, "rom", false); - - SPEAKER(config, "mono").front_center(); - SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 0.80); - - CENTRONICS(config, m_centronics, centronics_devices, "printer"); - m_centronics->ack_handler().set("cent_status_in", FUNC(input_buffer_device::write_bit6)); - m_centronics->busy_handler().set("cent_status_in", FUNC(input_buffer_device::write_bit7)); - m_centronics->fault_handler().set("cent_status_in", FUNC(input_buffer_device::write_bit4)); - m_centronics->perror_handler().set("cent_status_in", FUNC(input_buffer_device::write_bit5)); - - INPUT_BUFFER(config, "cent_status_in"); - - output_latch_device ¢_data_out(OUTPUT_LATCH(config, "cent_data_out")); - m_centronics->set_output_latch(cent_data_out); - - CASSETTE(config, m_cassette); - m_cassette->set_default_state(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED); - m_cassette->add_route(ALL_OUTPUTS, "mono", 0.05); - - SOFTWARE_LIST(config, "flop_list").set_original("mc1502_flop"); -// SOFTWARE_LIST(config, "cass_list").set_original("mc1502_cass"); - - RAM(config, RAM_TAG).set_default_size("608K").set_extra_options("96K"); /* 96 base + 512 on expansion card */ -} - - -/* - Apparently there was a hardware revision with built-in floppy - controller mapped to alternate set of ports; v531 and v533 - support this revision. v533 is possibly not an original BIOS, it - supports autoboot which none of others do. v521h is a version - with support for 3rd party hard disk controller (not emulated). - v51 is designed for a different keyboard layout (JCUKEN, not - QWERTY). -*/ -ROM_START( mc1502 ) - ROM_REGION(0x10000,"bios", 0) - - ROM_DEFAULT_BIOS("v52") - ROM_SYSTEM_BIOS(0, "v50", "v5.0 10/05/89") - ROMX_LOAD("monitor_5_0.rom", 0xc000, 0x4000, CRC(9e97c6a0) SHA1(16a304e8de69ec4d8b92acda6bf28454c361a24f),ROM_BIOS(0)) - ROM_SYSTEM_BIOS(1, "v52", "v5.2 22/03/91") - ROMX_LOAD("monitor_5_2.rom", 0xc000, 0x4000, CRC(0e65491e) SHA1(8a4d556473b5e0e59b05fab77c79c29f4d562412),ROM_BIOS(1)) - ROM_SYSTEM_BIOS(2, "v521", "v5.21 12/10/92") - ROMX_LOAD("monitor_5_21.rom", 0xc000, 0x4000, CRC(28c8f653) SHA1(04b0b09e0b86d9648a83352cc1590eb8963833e0),ROM_BIOS(2)) - ROM_SYSTEM_BIOS(3, "v531", "v5.31 12/10/92") - ROMX_LOAD("monitor_5_31.rom", 0xc000, 0x4000, CRC(a48295d5) SHA1(6f38977c22f9cc6c2bc6f6e53edc4048ca6b6721),ROM_BIOS(3)) - ROM_SYSTEM_BIOS(4, "v533", "v5.33 01/08/93") - ROMX_LOAD("0,cbc0.bin", 0xc000, 0x2000, CRC(9a55bc4f) SHA1(81da44eec2e52cf04b1fc7053502270f51270590),ROM_BIOS(4)) - ROMX_LOAD("1,dfe2.bin", 0xe000, 0x2000, CRC(8dec077a) SHA1(d6f6d7cc2183abc77fbd9cd59132de5766f7c458),ROM_BIOS(4)) - - // 5.21 + 3rd party HDC support. fails checksum test so marked BAD_DUMP. - ROM_SYSTEM_BIOS(5, "v521h", "v5.21h 22/09/93") - ROMX_LOAD("mshbios0.pgm", 0xc000, 0x2000, BAD_DUMP CRC(be447261) SHA1(b93c597c17dfa4b678f72c20a3f7119b73e6ba1c),ROM_BIOS(5)) - ROMX_LOAD("mshbios1.pgm", 0xe000, 0x2000, BAD_DUMP CRC(89e2eaf2) SHA1(37d6b225b5e35574fdac81219589407d925225be),ROM_BIOS(5)) - - // 5.3 - ROM_SYSTEM_BIOS(6, "v53", "v5.3 10/11/91") - ROMX_LOAD("1502-3b0.pgm", 0xc000, 0x2000, CRC(dc148763) SHA1(7a5e66438007b2de328ac680614f9c4ff60f6a75),ROM_BIOS(6)) - ROMX_LOAD("1502-3b1.pgm", 0xe000, 0x2000, CRC(17fc2af2) SHA1(a060d7b7302dfa639025f025106b50412cf26953),ROM_BIOS(6)) - // 5.1 -- JCUKEN keyboard - ROM_SYSTEM_BIOS(7, "v51", "v5.1 10/12/90") - ROMX_LOAD("ms1502b0.pgm", 0xc000, 0x2000, CRC(92fcc29a) SHA1(930a4cffcd6ec6110dd9a18bd389b78f0ccb110a),ROM_BIOS(7)) - ROMX_LOAD("ms1502b1.pgm", 0xe000, 0x2000, CRC(fe355a58) SHA1(b4ef7775045c6f2095e2b487fe19824986a4892c),ROM_BIOS(7)) - // 5.31 - ROM_SYSTEM_BIOS(8, "v531_93", "v5.31 21/01/93") - ROMX_LOAD("ms531b0.pgm", 0xc000, 0x2000, CRC(d97157d1) SHA1(cb1a1e0e2d9a0fcc78f9b09bfb4814d408ee4fae),ROM_BIOS(8)) - ROMX_LOAD("ms531b1.pgm", 0xe000, 0x2000, CRC(b1368e1a) SHA1(286496d25dc0ac2d8fe1802caffc6c37b236d105),ROM_BIOS(8)) - // 5.2 - ROM_SYSTEM_BIOS(9, "v52_91", "v5.2 10/11/91") - ROMX_LOAD("msv5-2b0.pgm", 0xc000, 0x2000, CRC(f7f370e9) SHA1(e069a35005581a02856853b57dd511ab8e10054b),ROM_BIOS(9)) - ROMX_LOAD("msv5-2b1.pgm", 0xe000, 0x2000, CRC(d50e1c43) SHA1(22724dec0052ee9e52f44f5914f2f5f3fae14612),ROM_BIOS(9)) - - // 7.2 - ROM_SYSTEM_BIOS(10, "v72", "v7.2 01/21/96") - ROMX_LOAD("7.2_1.bin", 0xe000, 0x2000, CRC(80912ad4) SHA1(cc54b77b2db4cc5d614efafd04367d2f06400fc8),ROM_BIOS(10)) - - ROM_REGION(0x2000,"gfx1", ROMREGION_ERASE00) - ROM_LOAD("symgen.rom", 0x0000, 0x2000, CRC(b2747a52) SHA1(6766d275467672436e91ac2997ac6b77700eba1e)) -ROM_END - -/* - Predecessor of MC1502, same keyboard attachment but - different video subsystem (not emulated). -*/ -ROM_START( pk88 ) - ROM_REGION(0x10000, "bios", 0) - - // datecode 07.23.87 - ROM_LOAD( "b0.064", 0x0000, 0x2000, CRC(80d3cf5d) SHA1(64769b7a8b60ffeefa04e4afbec778069a2840c9)) - ROM_LOAD( "b1.064", 0x2000, 0x2000, CRC(673a4acc) SHA1(082ae803994048e225150f771794ca305f73d731)) - ROM_LOAD( "b2.064", 0x4000, 0x2000, CRC(1ee66152) SHA1(7ed8c4c6c582487e802beabeca5b86702e5083e8)) - ROM_LOAD( "b3.064", 0x6000, 0x2000, CRC(3062b3fc) SHA1(5134dd64721cbf093d059ee5d3fd09c7f86604c7)) - ROM_LOAD( "pk88-0.064", 0xc000, 0x2000, CRC(1e4666cf) SHA1(6364c5241f2792909ff318194161eb2c29737546)) - ROM_LOAD( "pk88-1.064", 0xe000, 0x2000, CRC(6fa7e7ef) SHA1(d68bc273baa46ba733ac6ad4df7569dd70cf60dd)) -ROM_END - -/*************************************************************************** - - Game driver(s) - -***************************************************************************/ - -// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS -COMP ( 1989, mc1502, 0, 0, mc1502, mc1502, mc1502_state, init_mc1502, "NPO Microprocessor", "Elektronika MS 1502", MACHINE_IMPERFECT_GRAPHICS ) -COMP ( 1988, pk88, 0, 0, mc1502, mc1502, mc1502_state, init_mc1502, "NPO Microprocessor", "Elektronika PK-88", MACHINE_NOT_WORKING | MACHINE_NO_SOUND ) |