source/src/vm/pc6001/pc6001.cpp

   1 /*
   2         NEC PC-6001 Emulator 'yaPC-6001'
   3         NEC PC-6001mkII Emulator 'yaPC-6201'
   4         NEC PC-6001mkIISR Emulator 'yaPC-6401'
   5         NEC PC-6601 Emulator 'yaPC-6601'
   6         NEC PC-6601SR Emulator 'yaPC-6801'
   7
   8         Author : tanam
   9         Date   : 2013.07.15-
  10
  11         [ virtual machine ]
  12 */
  13
  14 #include "pc6001.h"
  15 #include "../../emu.h"
  16 #include "../device.h"
  17 #include "../event.h"
  18
  19 #include "../disk.h"
  20 #include "../i8255.h"
  21 #include "../io.h"
  22 #ifdef _PC6001
  23 #include "../mc6847.h"
  24 #include "display.h"
  25 #else
  26 #include "../upd7752.h"
  27 #endif
  28 #include "../pc6031.h"
  29 #include "../pc80s31k.h"
  30 #include "../prnfile.h"
  31 #include "../upd765a.h"
  32 #include "../ym2203.h"
  33 #include "../z80.h"
  34
  35 #include "../datarec.h"
  36 #include "../mcs48.h"
  37
  38 #ifdef USE_DEBUGGER
  39 #include "../debugger.h"
  40 #endif
  41
  42 #if defined(_PC6601) || defined(_PC6601SR)
  43 #include "floppy.h"
  44 #endif
  45 #include "joystick.h"
  46 #include "memory.h"
  47 #include "psub.h"
  48 #include "sub.h"
  49 #include "timer.h"
  50
  51 // ----------------------------------------------------------------------------
  52 // initialize
  53 // ----------------------------------------------------------------------------
  54
  55 VM::VM(EMU* parent_emu) : emu(parent_emu)
  56 {
  57         support_pc80s31k = FILEIO::IsFileExists(create_local_path(_T("DISK.ROM")));
  58 #ifdef _PC6601SR
  59         support_sub_cpu = false;
  60 #else
  61         support_sub_cpu = FILEIO::IsFileExists(create_local_path(_T(SUB_CPU_ROM_FILE_NAME)));
  62 #endif
  63
  64         // create devices
  65         first_device = last_device = NULL;
  66         dummy = new DEVICE(this, emu);  // must be 1st device
  67         event = new EVENT(this, emu);   // must be 2nd device
  68
  69         pio_sub = new I8255(this, emu);
  70         io = new IO(this, emu);
  71         psg = new YM2203(this, emu);
  72         cpu = new Z80(this, emu);
  73
  74         if(config.printer_device_type == 0) {
  75                 printer = new PRNFILE(this, emu);
  76         } else {
  77                 printer = dummy;
  78         }
  79
  80 #if defined(_PC6601) || defined(_PC6601SR)
  81         floppy = new FLOPPY(this, emu);
  82 #endif
  83         joystick = new JOYSTICK(this, emu);
  84         memory = new MEMORY(this, emu);
  85         timer = new TIMER(this, emu);
  86
  87         // set contexts
  88         event->set_context_cpu(cpu);
  89         event->set_context_sound(psg);
  90
  91         pio_sub->set_context_port_b(printer, SIG_PRINTER_DATA, 0xff, 0);
  92         pio_sub->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x01, 0);
  93         pio_sub->set_context_port_c(memory, SIG_MEMORY_PIO_PORT_C, 0x06, 0);    // CRTKILL,CGSWN
  94
  95 #ifdef _PC6001
  96         display = new DISPLAY(this, emu);
  97         vdp = new MC6847(this, emu);
  98         display->set_context_vdp(vdp);
  99         display->set_vram_ptr(memory->get_vram());
 100         display->set_context_timer(timer);
 101         vdp->load_font_image(create_local_path(_T("CGROM60.60")));
 102         vdp->set_context_cpu(cpu);
 103         pio_sub->set_context_port_c(vdp, SIG_MC6847_ENABLE, 0x02, 0);   // CRTKILL
 104 #else
 105         voice = new UPD7752(this, emu);
 106         event->set_context_sound(voice);
 107         memory->set_context_timer(timer);
 108 #endif
 109         memory->set_context_cpu(cpu);
 110         joystick->set_context_psg(psg);
 111
 112         timer->set_context_cpu(cpu);
 113 #ifndef _PC6001
 114         timer->set_context_memory(memory);
 115 #endif
 116         if(support_sub_cpu) {
 117                 cpu_sub = new MCS48(this, emu);
 118                 sub = new SUB(this, emu);
 119                 drec = new DATAREC(this, emu);
 120                 event->set_context_cpu(cpu_sub, 8000000);
 121                 event->set_context_sound(drec);
 122                 cpu_sub->set_context_mem(new MCS48MEM(this, emu));
 123                 cpu_sub->set_context_io(sub);
 124 #ifdef USE_DEBUGGER
 125                 cpu_sub->set_context_debugger(new DEBUGGER(this, emu));
 126 #endif
 127 //#ifdef DATAREC_SOUND
 128 //              event->set_context_sound(drec);
 129 //#endif
 130                 sub->set_context_pio(pio_sub);
 131                 sub->set_context_drec(drec);
 132                 sub->set_context_timer(timer);
 133                 pio_sub->set_context_port_c(cpu_sub, SIG_CPU_IRQ, 0x80, 0);
 134                 drec->set_context_ear(sub, SIG_SUB_DATAREC, 1);
 135                 timer->set_context_sub(sub);
 136         } else {
 137                 psub = new PSUB(this, emu);
 138                 psub->set_context_pio(pio_sub);
 139                 psub->set_context_timer(timer);
 140                 timer->set_context_sub(psub);
 141                 cpu_sub = NULL;
 142         }
 143         if(support_pc80s31k) {
 144                 pio_fdd = new I8255(this, emu);
 145                 pio_pc80s31k = new I8255(this, emu);
 146                 pc80s31k = new PC80S31K(this, emu);
 147                 fdc_pc80s31k = new UPD765A(this, emu);
 148                 cpu_pc80s31k = new Z80(this, emu);
 149
 150                 event->set_context_cpu(cpu_pc80s31k, 4000000);
 151                 pc80s31k->set_context_cpu(cpu_pc80s31k);
 152                 pc80s31k->set_context_fdc(fdc_pc80s31k);
 153                 pc80s31k->set_context_pio(pio_pc80s31k);
 154                 pio_fdd->set_context_port_a(pio_pc80s31k, SIG_I8255_PORT_B, 0xff, 0);
 155                 pio_fdd->set_context_port_b(pio_pc80s31k, SIG_I8255_PORT_A, 0xff, 0);
 156                 pio_fdd->set_context_port_c(pio_pc80s31k, SIG_I8255_PORT_C, 0x0f, 4);
 157                 pio_fdd->set_context_port_c(pio_pc80s31k, SIG_I8255_PORT_C, 0xf0, -4);
 158                 pio_fdd->clear_ports_by_cmdreg = true;
 159                 pio_pc80s31k->set_context_port_a(pio_fdd, SIG_I8255_PORT_B, 0xff, 0);
 160                 pio_pc80s31k->set_context_port_b(pio_fdd, SIG_I8255_PORT_A, 0xff, 0);
 161                 pio_pc80s31k->set_context_port_c(pio_fdd, SIG_I8255_PORT_C, 0x0f, 4);
 162                 pio_pc80s31k->set_context_port_c(pio_fdd, SIG_I8255_PORT_C, 0xf0, -4);
 163                 pio_pc80s31k->clear_ports_by_cmdreg = true;
 164                 fdc_pc80s31k->set_context_irq(cpu_pc80s31k, SIG_CPU_IRQ, 1);
 165                 cpu_pc80s31k->set_context_mem(pc80s31k);
 166                 cpu_pc80s31k->set_context_io(pc80s31k);
 167                 cpu_pc80s31k->set_context_intr(pc80s31k);
 168 #ifdef USE_DEBUGGER
 169                 cpu_pc80s31k->set_context_debugger(new DEBUGGER(this, emu));
 170 #endif
 171 #if defined(_PC6601) || defined(_PC6601SR)
 172                 floppy->set_context_ext(pio_fdd);
 173 #endif
 174         } else {
 175                 pc6031 = new PC6031(this, emu);
 176 #if defined(_PC6601) || defined(_PC6601SR)
 177                 floppy->set_context_ext(pc6031);
 178 #endif
 179                 cpu_pc80s31k = NULL;
 180         }
 181
 182         // cpu bus
 183         cpu->set_context_mem(memory);
 184         cpu->set_context_io(io);
 185         cpu->set_context_intr(timer);
 186 #ifdef USE_DEBUGGER
 187         cpu->set_context_debugger(new DEBUGGER(this, emu));
 188 #endif
 189
 190         // i/o bus
 191         if(support_sub_cpu) {
 192                 io->set_iomap_range_rw(0x90, 0x93, sub);
 193         } else {
 194                 io->set_iomap_range_rw(0x90, 0x93, psub);
 195         }
 196         io->set_iomap_alias_w(0xa0, psg, 0);                    // PSG ch
 197         io->set_iomap_alias_w(0xa1, psg, 1);                    // PSG data
 198         io->set_iomap_alias_r(0xa2, psg, 1);                    // PSG data
 199 #if defined(_PC6601SR) || defined(_PC6001MK2SR)
 200         io->set_iomap_alias_r(0xa3, psg, 0);                    // FM status
 201         io->set_iomap_range_rw(0x40, 0x6f, memory);             // VRAM addr
 202 #endif
 203 #ifdef _PC6001
 204         io->set_iomap_single_w(0xb0, display);                  // VRAM addr
 205         io->set_iomap_single_w(0x00, memory);                   // MEMORY MAP
 206 #else
 207         io->set_iomap_single_w(0xb0, memory);                   // VRAM addr
 208         io->set_iomap_range_rw(0xc0, 0xcf, memory);             // VRAM addr
 209         io->set_iomap_range_rw(0xe0, 0xe3, voice);              // VOICE
 210 #if defined(_PC6601) || defined(_PC6601SR)
 211         io->set_iomap_range_rw(0xb8, 0xbf, timer);              // IRQ
 212         io->set_iomap_range_rw(0xfa, 0xfb, timer);              // IRQ
 213 #endif
 214         io->set_iomap_range_rw(0xf3, 0xf7, timer);              // IRQ/Timer
 215 #endif
 216
 217 #if defined(_PC6601) || defined(_PC6601SR)
 218         io->set_iomap_range_rw(0xb1, 0xb3, floppy);             // DISK DRIVE
 219         io->set_iomap_range_rw(0xb5, 0xb7, floppy);             // DISK DRIVE (Mirror)
 220         io->set_iomap_range_rw(0xd0, 0xde, floppy);             // DISK DRIVE
 221 #else
 222         io->set_iovalue_single_r(0xb1, 0x01);
 223 #if defined(_PC6601SR)
 224         io->set_iovalue_single_r(0xb2, 0x02);
 225 #elif defined(_PC6001MK2SR)
 226         io->set_iovalue_single_r(0xb2, 0x00);
 227 #endif
 228
 229         if(support_pc80s31k) {
 230                 io->set_iomap_range_rw(0xd0, 0xd2, pio_fdd);
 231                 io->set_iomap_single_w(0xd3, pio_fdd);
 232         } else {
 233                 io->set_iomap_range_rw(0xd0, 0xd3, pc6031);
 234         }
 235 #endif
 236         io->set_iomap_range_rw(0xf0, 0xf2, memory);             // MEMORY MAP
 237
 238         // initialize all devices
 239         for(DEVICE* device = first_device; device; device = device->next_device) {
 240                 device->initialize();
 241         }
 242         if(support_sub_cpu) {
 243                 // load rom images after cpustate is allocated
 244 #ifdef _PC6601SR
 245 #else
 246                 cpu_sub->load_rom_image(create_local_path(_T(SUB_CPU_ROM_FILE_NAME)));
 247 #endif
 248         }
 249         int drive_num = 0;
 250 #if defined(_PC6601) || defined(_PC6601SR)
 251         floppy->get_disk_handler(0)->drive_num = drive_num++;
 252         floppy->get_disk_handler(1)->drive_num = drive_num++;
 253 #endif
 254         if(support_pc80s31k) {
 255                 fdc_pc80s31k->get_disk_handler(0)->drive_num = drive_num++;
 256                 fdc_pc80s31k->get_disk_handler(1)->drive_num = drive_num++;
 257         } else {
 258                 pc6031->get_disk_handler(0)->drive_num = drive_num++;
 259                 pc6031->get_disk_handler(1)->drive_num = drive_num++;
 260         }
 261 }
 262
 263 VM::~VM()
 264 {
 265         // delete all devices
 266         for(DEVICE* device = first_device; device;) {
 267                 DEVICE *next_device = device->next_device;
 268                 device->release();
 269                 delete device;
 270                 device = next_device;
 271         }
 272 }
 273
 274 DEVICE* VM::get_device(int id)
 275 {
 276         for(DEVICE* device = first_device; device; device = device->next_device) {
 277                 if(device->this_device_id == id) {
 278                         return device;
 279                 }
 280         }
 281         return NULL;
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // drive virtual machine
 286 // ----------------------------------------------------------------------------
 287 void VM::reset()
 288 {
 289         // reset all devices
 290         for(DEVICE* device = first_device; device; device = device->next_device) {
 291                 device->reset();
 292         }
 293         if(support_pc80s31k) {
 294                 pio_fdd->write_signal(SIG_I8255_PORT_C, 0, 0xff);
 295                 pio_pc80s31k->write_signal(SIG_I8255_PORT_C, 0, 0xff);
 296         }
 297 }
 298
 299 void VM::run()
 300 {
 301         event->drive();
 302 }
 303
 304 // ----------------------------------------------------------------------------
 305 // debugger
 306 // ----------------------------------------------------------------------------
 307
 308 #ifdef USE_DEBUGGER
 309 DEVICE *VM::get_cpu(int index)
 310 {
 311         if(index == 0) {
 312                 return cpu;
 313         } else if(index == 1) {
 314                 return cpu_sub;
 315         } else if(index == 2) {
 316                 return cpu_pc80s31k;
 317         }
 318         return NULL;
 319 }
 320 #endif
 321
 322 // ----------------------------------------------------------------------------
 323 // draw screen
 324 // ----------------------------------------------------------------------------
 325
 326 void VM::draw_screen()
 327 {
 328 #ifdef _PC6001
 329         display->draw_screen();
 330 #else
 331         memory->draw_screen();
 332 #endif
 333 }
 334 // ----------------------------------------------------------------------------
 335 // soud manager
 336 // ----------------------------------------------------------------------------
 337
 338 void VM::initialize_sound(int rate, int samples)
 339 {
 340         // init sound manager
 341         event->initialize_sound(rate, samples);
 342
 343         // init sound gen
 344         psg->init(rate, 4000000, samples, 0, 0);
 345 #ifndef _PC6001
 346         voice->init(rate);
 347 #endif
 348 }
 349
 350 uint16* VM::create_sound(int* extra_frames)
 351 {
 352         return event->create_sound(extra_frames);
 353 }
 354
 355 int VM::sound_buffer_ptr()
 356 {
 357         return event->sound_buffer_ptr();
 358 }
 359
 360 // ----------------------------------------------------------------------------
 361 // user interface
 362 // ----------------------------------------------------------------------------
 363
 364 void VM::open_cart(int drv, const _TCHAR* file_path)
 365 {
 366         if(drv == 0) {
 367                 memory->open_cart(file_path);
 368                 reset();
 369         }
 370 }
 371
 372 void VM::close_cart(int drv)
 373 {
 374         if(drv == 0) {
 375                 memory->close_cart();
 376                 reset();
 377         }
 378 }
 379
 380 bool VM::cart_inserted(int drv)
 381 {
 382         if(drv == 0) {
 383                 return memory->cart_inserted();
 384         } else {
 385                 return false;
 386         }
 387 }
 388
 389 int VM::access_lamp()
 390 {
 391         uint32 status = 0; /// fdc->read_signal(0);
 392 #if defined(_PC6601) || defined(_PC6601SR)
 393         status = floppy->read_signal(0);
 394 #endif
 395         if(support_pc80s31k) {
 396                 status |= fdc_pc80s31k->read_signal(0);
 397         } else {
 398                 status |= pc6031->read_signal(0);
 399         }
 400         return status;
 401 }
 402
 403 void VM::open_disk(int drv, const _TCHAR* file_path, int bank)
 404 {
 405 #if defined(_PC6601) || defined(_PC6601SR)
 406         if(drv < 2) {
 407                 floppy->open_disk(drv, file_path, bank);
 408                 return;
 409         } else {
 410                 drv -= 2;
 411         }
 412 #endif
 413         if(support_pc80s31k) {
 414                 fdc_pc80s31k->open_disk(drv, file_path, bank);
 415         } else {
 416                 pc6031->open_disk(drv, file_path, bank);
 417         }
 418 }
 419
 420 void VM::close_disk(int drv)
 421 {
 422 #if defined(_PC6601) || defined(_PC6601SR)
 423         if(drv < 2) {
 424                 floppy->close_disk(drv);
 425                 return;
 426         } else {
 427                 drv -= 2;
 428         }
 429 #endif
 430         if(support_pc80s31k) {
 431                 fdc_pc80s31k->close_disk(drv);
 432         } else {
 433                 pc6031->close_disk(drv);
 434         }
 435 }
 436
 437 bool VM::disk_inserted(int drv)
 438 {
 439 #if defined(_PC6601) || defined(_PC6601SR)
 440         if(drv < 2) {
 441                 return floppy->disk_inserted(drv);
 442         } else {
 443                 drv -= 2;
 444         }
 445 #endif
 446         if(support_pc80s31k) {
 447                 return fdc_pc80s31k->disk_inserted(drv);
 448         } else {
 449                 return pc6031->disk_inserted(drv);
 450         }
 451 }
 452
 453 void VM::set_disk_protected(int drv, bool value)
 454 {
 455 #if defined(_PC6601) || defined(_PC6601SR)
 456         if(drv < 2) {
 457                 floppy->set_disk_protected(drv, value);
 458                 return;
 459         } else {
 460                 drv -= 2;
 461         }
 462 #endif
 463         if(support_pc80s31k) {
 464                 fdc_pc80s31k->set_disk_protected(drv, value);
 465         } else {
 466                 pc6031->set_disk_protected(drv, value);
 467         }
 468 }
 469
 470 bool VM::get_disk_protected(int drv)
 471 {
 472 #if defined(_PC6601) || defined(_PC6601SR)
 473         if(drv < 2) {
 474                 return floppy->get_disk_protected(drv);
 475         } else {
 476                 drv -= 2;
 477         }
 478 #endif
 479         if(support_pc80s31k) {
 480                 return fdc_pc80s31k->get_disk_protected(drv);
 481         } else {
 482                 return pc6031->get_disk_protected(drv);
 483         }
 484 }
 485
 486 void VM::play_tape(const _TCHAR* file_path)
 487 {
 488         if(support_sub_cpu) {
 489                 // support both p6/p6t and wav
 490                 drec->play_tape(file_path);
 491         } else {
 492                 // support only p6/p6t
 493                 psub->play_tape(file_path);
 494         }
 495 }
 496
 497 void VM::rec_tape(const _TCHAR* file_path)
 498 {
 499         if(support_sub_cpu) {
 500                 // support both p6/p6t and wav
 501                 sub->rec_tape(file_path);       // temporary
 502 //              drec->rec_tape(file_path);
 503         } else {
 504                 // support both p6/p6t and wav
 505                 psub->rec_tape(file_path);
 506         }
 507 }
 508
 509 void VM::close_tape()
 510 {
 511         if(support_sub_cpu) {
 512                 if(sub->tape_inserted()) {
 513                         sub->close_tape();      // temporary
 514                 } else {
 515                         drec->close_tape();
 516                 }
 517         } else {
 518                 psub->close_tape();
 519         }
 520 }
 521
 522 bool VM::tape_inserted()
 523 {
 524         if(support_sub_cpu) {
 525                 return drec->tape_inserted() || sub->tape_inserted();
 526         } else {
 527                 return psub->tape_inserted();
 528         }
 529 }
 530
 531 bool VM::tape_playing()
 532 {
 533         if(support_sub_cpu) {
 534                 return drec->tape_playing();
 535         } else {
 536                 return false;
 537         }
 538 }
 539
 540 bool VM::tape_recording()
 541 {
 542         if(support_sub_cpu) {
 543                 return drec->tape_recording();
 544         } else {
 545                 return false;
 546         }
 547 }
 548
 549 int VM::tape_position()
 550 {
 551         if(support_sub_cpu) {
 552                 return drec->tape_position();
 553         } else {
 554                 return 0;
 555         }
 556 }
 557
 558 bool VM::now_skip()
 559 {
 560         return event->now_skip();
 561 }
 562
 563 void VM::update_config()
 564 {
 565         for(DEVICE* device = first_device; device; device = device->next_device) {
 566                 device->update_config();
 567         }
 568 }
 569
 570 #define STATE_VERSION   3
 571
 572 void VM::save_state(FILEIO* state_fio)
 573 {
 574         state_fio->FputUint32(STATE_VERSION);
 575
 576         for(DEVICE* device = first_device; device; device = device->next_device) {
 577                 device->save_state(state_fio);
 578         }
 579         state_fio->FputInt32(sr_mode);
 580 }
 581
 582 bool VM::load_state(FILEIO* state_fio)
 583 {
 584         if(state_fio->FgetUint32() != STATE_VERSION) {
 585                 return false;
 586         }
 587         for(DEVICE* device = first_device; device; device = device->next_device) {
 588                 if(!device->load_state(state_fio)) {
 589                         return false;
 590                 }
 591         }
 592         sr_mode = state_fio->FgetInt32();
 593         return true;
 594 }
 595