// 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 "sound/wave.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
MACHINE_CONFIG_START(mc1502_state::mc1502)
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, 0);
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, 0);
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_cputag("maincpu");
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));
MCFG_DEVICE_ADD("board0", ISA8_SLOT, 0, "isa", mc1502_isa8_cards, "cga_mc1502", true) // FIXME: determine ISA bus clock
MCFG_DEVICE_ADD("isa1", ISA8_SLOT, 0, "isa", mc1502_isa8_cards, "fdc", false)
MCFG_DEVICE_ADD("isa2", ISA8_SLOT, 0, "isa", mc1502_isa8_cards, "rom", false)
SPEAKER(config, "mono").front_center();
WAVE(config, "wave", "cassette"); // FIXME: really no output routes for the cassette sound?
SPEAKER_SOUND(config, "speaker").add_route(ALL_OUTPUTS, "mono", 0.80);
MCFG_DEVICE_ADD(m_centronics, CENTRONICS, centronics_devices, "printer")
MCFG_CENTRONICS_ACK_HANDLER(WRITELINE("cent_status_in", input_buffer_device, write_bit6))
MCFG_CENTRONICS_BUSY_HANDLER(WRITELINE("cent_status_in", input_buffer_device, write_bit7))
MCFG_CENTRONICS_FAULT_HANDLER(WRITELINE("cent_status_in", input_buffer_device, write_bit4))
MCFG_CENTRONICS_PERROR_HANDLER(WRITELINE("cent_status_in", input_buffer_device, write_bit5))
MCFG_DEVICE_ADD("cent_status_in", INPUT_BUFFER, 0)
MCFG_CENTRONICS_OUTPUT_LATCH_ADD("cent_data_out", "centronics")
MCFG_CASSETTE_ADD( "cassette" )
MCFG_CASSETTE_DEFAULT_STATE(CASSETTE_STOPPED | CASSETTE_MOTOR_ENABLED | CASSETTE_SPEAKER_ENABLED)
MCFG_SOFTWARE_LIST_ADD("flop_list","mc1502_flop")
// MCFG_SOFTWARE_LIST_ADD("cass_list","mc1502_cass")
RAM(config, RAM_TAG).set_default_size("608K").set_extra_options("96K"); /* 96 base + 512 on expansion card */
MACHINE_CONFIG_END
/*
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_REGION16_LE(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_REGION16_LE(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 )