source/src/vm/fmr50/fmr50.cpp

   1 /*
   2         FUJITSU FMR-50 Emulator 'eFMR-50'
   3         FUJITSU FMR-60 Emulator 'eFMR-60'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2008.04.28 -
   7
   8         [ virtual machine ]
   9 */
  10
  11 #include "fmr50.h"
  12 #include "../../emu.h"
  13 #include "../device.h"
  14 #include "../event.h"
  15
  16 #include "../harddisk.h"
  17 #include "../hd46505.h"
  18 #ifdef _FMR60
  19 #include "../hd63484.h"
  20 #endif
  21 #include "../i8251.h"
  22 #include "../i8253.h"
  23 #include "../i8259.h"
  24 #if defined(HAS_I286)
  25 #include "../i286.h"
  26 #else
  27 #include "../i386.h"
  28 #endif
  29 #include "../io.h"
  30 #include "../mb8877.h"
  31 #include "../msm58321.h"
  32 #include "../noise.h"
  33 #include "../pcm1bit.h"
  34 #include "../scsi_hdd.h"
  35 #include "../scsi_host.h"
  36 #include "../upd71071.h"
  37
  38 #ifdef USE_DEBUGGER
  39 #include "../debugger.h"
  40 #endif
  41
  42 #include "bios.h"
  43 #include "cmos.h"
  44 #include "floppy.h"
  45 #include "keyboard.h"
  46 #include "memory.h"
  47 #include "scsi.h"
  48 //#include "serial.h"
  49 #include "timer.h"
  50
  51 // ----------------------------------------------------------------------------
  52 // initialize
  53 // ----------------------------------------------------------------------------
  54
  55 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  56 {
  57 /*
  58         Machine ID & CPU ID
  59
  60         FMR-50FD/HD/LT  0xF8
  61         FMR-50FX/HX     0xE0
  62         FMR-50SFX/SHX   0xE8
  63         FMR-50LT        0xF8
  64         FMR-50NBX       0x28
  65         FMR-50NB        0x60
  66         FMR-50NE/T      0x08
  67         FMR-CARD        0x70
  68
  69         80286           0x00
  70         80386           0x01
  71         80386SX         0x03
  72         80486           0x02
  73 */
  74         static const int cpu_clock[] = {
  75 #if defined(HAS_I286)
  76                  8000000, 12000000
  77 #elif defined(HAS_I386)
  78                 16000000, 20000000
  79 #elif defined(HAS_I486)
  80                 20000000, 25000000
  81 #endif
  82         };
  83
  84 #if defined(_FMR60) && (defined(HAS_I386) || defined(HAS_I486) || defined(HAS_PENTIUM))
  85         uint8_t machine_id = 0xf0;      // FMR-70/80
  86 #else
  87         uint8_t machine_id = 0xf8;      // FMR-50/60
  88 #endif
  89
  90         FILEIO* fio = new FILEIO();
  91         if(fio->Fopen(create_local_path(_T("MACHINE.ID")), FILEIO_READ_BINARY)) {
  92                 machine_id = fio->Fgetc();
  93                 fio->Fclose();
  94         }
  95         delete fio;
  96
  97         machine_id &= ~7;
  98 #if defined(HAS_I286)
  99         machine_id |= 0;        // 286
 100 #elif defined(HAS_I386)
 101 //      machine_id |= 1;        // 386DX
 102         machine_id |= 3;        // 386SX
 103 #elif defined(HAS_I486)
 104         machine_id |= 2;        // 486SX/DX
 105 #endif
 106
 107         // create devices
 108         first_device = last_device = NULL;
 109         dummy = new DEVICE(this, emu);  // must be 1st device
 110         event = new EVENT(this, emu);   // must be 2nd device
 111         dummy->set_device_name(_T("1st Dummy"));
 112
 113 #if defined(HAS_I286)
 114         cpu = new I286(this, emu);
 115 #else
 116         cpu = new I386(this, emu);
 117 #endif
 118 #if defined(HAS_I286)
 119         cpu->set_device_name(_T("CPU(i286)"));
 120 #elif defined(HAS_I386)
 121         cpu->set_device_name(_T("CPU(i386)"));
 122 #elif defined(HAS_I486)
 123         cpu->set_device_name(_T("CPU(i486)"));
 124 #elif defined(HAS_PENTIUM)
 125         cpu->set_device_name(_T("CPU(Pentium)"));
 126 #endif
 127         crtc = new HD46505(this, emu);
 128 #ifdef _FMR60
 129         acrtc = new HD63484(this, emu);
 130 #endif
 131
 132         sio = new I8251(this, emu);
 133         pit0 = new I8253(this, emu);
 134         pit0->set_device_name(_T("8253 PIT #0"));
 135         pit1 = new I8253(this, emu);
 136         pit1->set_device_name(_T("8253 PIT #1"));
 137         pic = new I8259(this, emu);
 138         io = new IO(this, emu);
 139         fdc = new MB8877(this, emu);
 140         fdc->set_context_noise_seek(new NOISE(this, emu));
 141         fdc->set_context_noise_head_down(new NOISE(this, emu));
 142         fdc->set_context_noise_head_up(new NOISE(this, emu));
 143         rtc = new MSM58321(this, emu);
 144         pcm = new PCM1BIT(this, emu);
 145
 146         scsi_host = new SCSI_HOST(this, emu);
 147         for(int i = 0; i < USE_HARD_DISK; i++) {
 148                 scsi_hdd[i] = new SCSI_HDD(this, emu);
 149                 scsi_hdd[i]->set_device_name(_T("SCSI Hard Disk Drive #%d"), i + 1);
 150                 scsi_hdd[i]->scsi_id = i;
 151                 scsi_hdd[i]->set_disk_handler(0, new HARDDISK(emu));
 152                 scsi_hdd[i]->set_context_interface(scsi_host);
 153                 scsi_host->set_context_target(scsi_hdd[i]);
 154         }
 155         dma = new UPD71071(this, emu);
 156         if(FILEIO::IsFileExisting(create_local_path(_T("IPL.ROM")))) {
 157                 bios = NULL;
 158         } else {
 159                 bios = new BIOS(this, emu);
 160         }
 161         cmos = new CMOS(this, emu);
 162         floppy = new FLOPPY(this, emu);
 163         keyboard = new KEYBOARD(this, emu);
 164         memory = new MEMORY(this, emu);
 165         scsi = new SCSI(this, emu);
 166 //      serial = new SERIAL(this, emu);
 167         timer = new TIMER(this, emu);
 168         // set contexts
 169         event->set_context_cpu(cpu, cpu_clock[config.cpu_type & 1]);
 170         event->set_context_sound(pcm);
 171         event->set_context_sound(fdc->get_context_noise_seek());
 172         event->set_context_sound(fdc->get_context_noise_head_down());
 173         event->set_context_sound(fdc->get_context_noise_head_up());
 174
 175 /*      pic     0       timer
 176                 1       keyboard
 177                 2       rs-232c
 178                 3       ex rs-232c
 179                 4       (option)
 180                 5       (option)
 181                 6       floppy drive or dma ???
 182                 7       (slave)
 183                 8       scsi
 184                 9       (option)
 185                 10      (option)
 186                 11      (option)
 187                 12      printer
 188                 13      (option)
 189                 14      (option)
 190                 15      (reserve)
 191
 192         dma     0       floppy drive
 193                 1       hard drive
 194                 2       (option)
 195                 3       (reserve)
 196 */
 197         crtc->set_context_disp(memory, SIG_MEMORY_DISP, 1);
 198         crtc->set_context_vsync(memory, SIG_MEMORY_VSYNC, 1);
 199 #ifdef _FMR60
 200         acrtc->set_vram_ptr((uint16_t*)memory->get_vram(), 0x80000);
 201 #endif
 202         pit0->set_context_ch0(timer, SIG_TIMER_CH0, 1);
 203         pit0->set_context_ch1(timer, SIG_TIMER_CH1, 1);
 204         pit0->set_context_ch2(pcm, SIG_PCM1BIT_SIGNAL, 1);
 205         pit0->set_constant_clock(0, 307200);
 206         pit0->set_constant_clock(1, 307200);
 207         pit0->set_constant_clock(2, 307200);
 208         pit1->set_constant_clock(1, 1228800);
 209         pic->set_context_cpu(cpu);
 210         fdc->set_context_drq(dma, SIG_UPD71071_CH0, 1);
 211         fdc->set_context_irq(floppy, SIG_FLOPPY_IRQ, 1);
 212         rtc->set_context_data(timer, SIG_TIMER_RTC, 0x0f, 0);
 213         rtc->set_context_busy(timer, SIG_TIMER_RTC, 0x80);
 214         scsi_host->set_context_irq(scsi, SIG_SCSI_IRQ, 1);
 215         scsi_host->set_context_drq(scsi, SIG_SCSI_DRQ, 1);
 216         dma->set_context_memory(memory);
 217         dma->set_context_ch0(fdc);
 218         dma->set_context_ch1(scsi_host);
 219
 220         floppy->set_context_fdc(fdc);
 221         floppy->set_context_pic(pic);
 222         keyboard->set_context_pic(pic);
 223         memory->set_context_cpu(cpu);
 224         memory->set_machine_id(machine_id);
 225         memory->set_context_crtc(crtc);
 226         memory->set_chregs_ptr(crtc->get_regs());
 227         scsi->set_context_dma(dma);
 228         scsi->set_context_pic(pic);
 229         scsi->set_context_host(scsi_host);
 230         timer->set_context_pcm(pcm);
 231         timer->set_context_pic(pic);
 232         timer->set_context_rtc(rtc);
 233
 234         // cpu bus
 235         cpu->set_context_mem(memory);
 236         cpu->set_context_io(io);
 237         cpu->set_context_intr(pic);
 238         if(bios) {
 239                 bios->set_context_mem(memory);
 240                 bios->set_context_io(io);
 241                 bios->set_cmos_ptr(cmos->get_cmos());
 242                 bios->set_vram_ptr(memory->get_vram());
 243                 bios->set_cvram_ptr(memory->get_cvram());
 244 #ifdef _FMR60
 245                 bios->set_avram_ptr(memory->get_avram());
 246 #else
 247                 bios->set_kvram_ptr(memory->get_kvram());
 248 #endif
 249                 cpu->set_context_bios(bios);
 250         }
 251 #ifdef SINGLE_MODE_DMA
 252         cpu->set_context_dma(dma);
 253 #endif
 254 #ifdef USE_DEBUGGER
 255         cpu->set_context_debugger(new DEBUGGER(this, emu));
 256 #endif
 257
 258         // i/o bus
 259         io->set_iomap_alias_rw(0x00, pic, I8259_ADDR_CHIP0 | 0);
 260         io->set_iomap_alias_rw(0x02, pic, I8259_ADDR_CHIP0 | 1);
 261         io->set_iomap_alias_rw(0x10, pic, I8259_ADDR_CHIP1 | 0);
 262         io->set_iomap_alias_rw(0x12, pic, I8259_ADDR_CHIP1 | 1);
 263         io->set_iomap_single_rw(0x20, memory);  // reset
 264         io->set_iomap_single_r(0x21, memory);   // cpu misc
 265         io->set_iomap_single_w(0x22, memory);   // dma
 266         io->set_iomap_single_rw(0x24, memory);  // dma
 267         io->set_iomap_single_r(0x26, timer);
 268         io->set_iomap_single_r(0x27, timer);
 269         io->set_iomap_single_r(0x30, memory);   // cpu id
 270         io->set_iomap_alias_rw(0x40, pit0, 0);
 271         io->set_iomap_alias_rw(0x42, pit0, 1);
 272         io->set_iomap_alias_rw(0x44, pit0, 2);
 273         io->set_iomap_alias_rw(0x46, pit0, 3);
 274         io->set_iomap_alias_rw(0x50, pit1, 0);
 275         io->set_iomap_alias_rw(0x52, pit1, 1);
 276         io->set_iomap_alias_rw(0x54, pit1, 2);
 277         io->set_iomap_alias_rw(0x56, pit1, 3);
 278         io->set_iomap_single_rw(0x60, timer);
 279         io->set_iomap_single_rw(0x70, timer);
 280         io->set_iomap_single_w(0x80, timer);
 281 #ifdef _FMRCARD
 282         io->set_iomap_single_w(0x90, cmos);
 283 #endif
 284         io->set_iomap_range_rw(0xa0, 0xaf, dma);
 285         io->set_iomap_alias_rw(0x200, fdc, 0);
 286         io->set_iomap_alias_rw(0x202, fdc, 1);
 287         io->set_iomap_alias_rw(0x204, fdc, 2);
 288         io->set_iomap_alias_rw(0x206, fdc, 3);
 289         io->set_iomap_single_rw(0x208, floppy);
 290         io->set_iomap_single_rw(0x20c, floppy);
 291         io->set_iomap_single_rw(0x400, memory); // crtc
 292         io->set_iomap_single_rw(0x402, memory); // crtc
 293         io->set_iomap_single_rw(0x404, memory); // crtc
 294         io->set_iomap_single_w(0x408, memory);  // crtc
 295         io->set_iomap_single_rw(0x40a, memory); // crtc
 296         io->set_iomap_single_rw(0x40c, memory); // crtc
 297         io->set_iomap_single_rw(0x40e, memory); // crtc
 298         io->set_iomap_alias_rw(0x500, crtc, 0);
 299         io->set_iomap_alias_rw(0x502, crtc, 1);
 300 #ifdef _FMR60
 301         io->set_iomap_range_rw(0x520, 0x523, acrtc);
 302 #endif
 303         io->set_iomap_single_rw(0x600, keyboard);
 304         io->set_iomap_single_rw(0x602, keyboard);
 305         io->set_iomap_single_rw(0x604, keyboard);
 306         io->set_iomap_alias_rw(0xa00, sio, 0);
 307         io->set_iomap_alias_rw(0xa02, sio, 1);
 308 //      io->set_iomap_single_r(0xa04, serial);
 309 //      io->set_iomap_single_r(0xa06, serial);
 310 //      io->set_iomap_single_w(0xa08, serial);
 311         io->set_iomap_single_rw(0xc30, scsi);
 312         io->set_iomap_single_rw(0xc32, scsi);
 313         io->set_iomap_range_rw(0x3000, 0x3fff, cmos);
 314         io->set_iomap_range_rw(0xfd98, 0xfd9f, memory); // crtc
 315         io->set_iomap_single_rw(0xfda0, memory);        // crtc
 316
 317         // initialize all devices
 318 #if defined(__GIT_REPO_VERSION)
 319         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 320 #endif
 321         for(DEVICE* device = first_device; device; device = device->next_device) {
 322                 device->initialize();
 323         }
 324
 325         for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 326                 if(!(config.last_hard_disk_path[drv][0] != _T('\0') && FILEIO::IsFileExisting(config.last_hard_disk_path[drv]))) {
 327                         create_local_path(config.last_hard_disk_path[drv], _MAX_PATH, _T("SCSI%d.DAT"), drv);
 328                 }
 329         }
 330         if(bios) {
 331                 for(int drv = 0; drv < MAX_DRIVE; drv++) {
 332                         bios->set_floppy_disk_handler(drv, fdc->get_disk_handler(drv));
 333                 }
 334                 for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 335                         bios->set_hard_disk_handler(drv, scsi_hdd[drv]->get_disk_handler(0));
 336                 }
 337         }
 338         decl_state();
 339 }
 340
 341 VM::~VM()
 342 {
 343         // delete all devices
 344         for(DEVICE* device = first_device; device;) {
 345                 DEVICE *next_device = device->next_device;
 346                 device->release();
 347                 delete device;
 348                 device = next_device;
 349         }
 350 }
 351
 352 DEVICE* VM::get_device(int id)
 353 {
 354         for(DEVICE* device = first_device; device; device = device->next_device) {
 355                 if(device->this_device_id == id) {
 356                         return device;
 357                 }
 358         }
 359         return NULL;
 360 }
 361
 362 // ----------------------------------------------------------------------------
 363 // drive virtual machine
 364 // ----------------------------------------------------------------------------
 365
 366 void VM::reset()
 367 {
 368         // reset all devices
 369         for(DEVICE* device = first_device; device; device = device->next_device) {
 370                 device->reset();
 371         }
 372         // temporary fix...
 373         for(DEVICE* device = first_device; device; device = device->next_device) {
 374                 device->reset();
 375         }
 376 }
 377
 378 void VM::run()
 379 {
 380         event->drive();
 381 }
 382
 383 // ----------------------------------------------------------------------------
 384 // debugger
 385 // ----------------------------------------------------------------------------
 386
 387 #ifdef USE_DEBUGGER
 388 DEVICE *VM::get_cpu(int index)
 389 {
 390         if(index == 0) {
 391                 return cpu;
 392         }
 393         return NULL;
 394 }
 395 #endif
 396
 397 // ----------------------------------------------------------------------------
 398 // draw screen
 399 // ----------------------------------------------------------------------------
 400
 401 void VM::draw_screen()
 402 {
 403         memory->draw_screen();
 404 }
 405
 406 // ----------------------------------------------------------------------------
 407 // soud manager
 408 // ----------------------------------------------------------------------------
 409
 410 void VM::initialize_sound(int rate, int samples)
 411 {
 412         // init sound manager
 413         event->initialize_sound(rate, samples);
 414
 415         // init sound gen
 416         pcm->initialize_sound(rate, 8000);
 417 }
 418
 419 uint16_t* VM::create_sound(int* extra_frames)
 420 {
 421         return event->create_sound(extra_frames);
 422 }
 423
 424 int VM::get_sound_buffer_ptr()
 425 {
 426         return event->get_sound_buffer_ptr();
 427 }
 428
 429 #ifdef USE_SOUND_VOLUME
 430 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 431 {
 432         if(ch == 0) {
 433                 pcm->set_volume(0, decibel_l, decibel_r);
 434         } else if(ch == 1) {
 435                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 436                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 437                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 438         }
 439 }
 440 #endif
 441
 442 // ----------------------------------------------------------------------------
 443 // notify key
 444 // ----------------------------------------------------------------------------
 445
 446 void VM::key_down(int code, bool repeat)
 447 {
 448         keyboard->key_down(code);
 449 }
 450
 451 void VM::key_up(int code)
 452 {
 453         keyboard->key_up(code);
 454 }
 455
 456 // ----------------------------------------------------------------------------
 457 // user interface
 458 // ----------------------------------------------------------------------------
 459
 460 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 461 {
 462         fdc->open_disk(drv, file_path, bank);
 463         floppy->change_disk(drv);
 464 }
 465
 466 void VM::close_floppy_disk(int drv)
 467 {
 468         fdc->close_disk(drv);
 469 }
 470
 471 bool VM::is_floppy_disk_inserted(int drv)
 472 {
 473         return fdc->is_disk_inserted(drv);
 474 }
 475
 476 void VM::is_floppy_disk_protected(int drv, bool value)
 477 {
 478         fdc->is_disk_protected(drv, value);
 479 }
 480
 481 bool VM::is_floppy_disk_protected(int drv)
 482 {
 483         return fdc->is_disk_protected(drv);
 484 }
 485
 486 uint32_t VM::is_floppy_disk_accessed()
 487 {
 488         uint32_t status = fdc->read_signal(0);
 489         if(bios) {
 490                 status |= bios->read_signal(0);
 491         }
 492         return status;
 493 }
 494
 495 void VM::open_hard_disk(int drv, const _TCHAR* file_path)
 496 {
 497         if(drv < USE_HARD_DISK) {
 498                 scsi_hdd[drv]->open(0, file_path, 512);
 499         }
 500 }
 501
 502 void VM::close_hard_disk(int drv)
 503 {
 504         if(drv < USE_HARD_DISK) {
 505                 scsi_hdd[drv]->close(0);
 506         }
 507 }
 508
 509 bool VM::is_hard_disk_inserted(int drv)
 510 {
 511         if(drv < USE_HARD_DISK) {
 512                 return scsi_hdd[drv]->mounted(0);
 513         }
 514         return false;
 515 }
 516
 517 uint32_t VM::is_hard_disk_accessed()
 518 {
 519         uint32_t status = 0;
 520
 521         for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 522                 if(scsi_hdd[drv]->accessed(0)) {
 523                         status |= 1 << drv;
 524                 }
 525         }
 526         return status;
 527 }
 528
 529 bool VM::is_frame_skippable()
 530 {
 531         return event->is_frame_skippable();
 532 }
 533
 534 void VM::update_config()
 535 {
 536         for(DEVICE* device = first_device; device; device = device->next_device) {
 537                 device->update_config();
 538         }
 539 }
 540
 541 #define STATE_VERSION   6
 542
 543 #include "../../statesub.h"
 544 #include "../../qt/gui/csp_logger.h"
 545 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 546
 547 void VM::decl_state(void)
 548 {
 549 #if defined(_FMR50)
 550 #  if defined(HAS_I286)
 551         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_50_I286_HEAD")), csp_logger);
 552 #  elif defined(HAS_I386)
 553         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_50_I386_HEAD")), csp_logger);
 554 #  elif defined(HAS_I486)
 555         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_50_I486_HEAD")), csp_logger);
 556 #  elif defined(HAS_PENTIUM)
 557         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_250_HEAD")), csp_logger);
 558 #  else
 559         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_50_SERIES_HEAD")), csp_logger);
 560 #  endif
 561 #elif defined(_FMR60)
 562 #  if defined(HAS_I286)
 563         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_60_HEAD")), csp_logger);
 564 #  elif defined(HAS_I386)
 565         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_70_HEAD")), csp_logger);
 566 #  elif defined(HAS_I486)
 567         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_80_HEAD")), csp_logger);
 568 #  elif defined(HAS_PENTIUM)
 569         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_280_HEAD")), csp_logger);
 570 #  else
 571         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::FMR_60_SERIES_HEAD")), csp_logger);
 572 #  endif
 573 #endif
 574
 575         for(DEVICE* device = first_device; device; device = device->next_device) {
 576                 device->decl_state();
 577         }
 578 }
 579
 580 void VM::save_state(FILEIO* state_fio)
 581 {
 582         //state_fio->FputUint32(STATE_VERSION);
 583
 584         if(state_entry != NULL) {
 585                 state_entry->save_state(state_fio);
 586         }
 587         for(DEVICE* device = first_device; device; device = device->next_device) {
 588                 device->save_state(state_fio);
 589         }
 590 }
 591
 592 bool VM::load_state(FILEIO* state_fio)
 593 {
 594         //if(state_fio->FgetUint32() != STATE_VERSION) {
 595         //      return false;
 596         //}
 597         bool mb = false;
 598         if(state_entry != NULL) {
 599                 mb = state_entry->load_state(state_fio);
 600         }
 601         if(!mb) {
 602                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 603                 return false;
 604         }
 605         for(DEVICE* device = first_device; device; device = device->next_device) {
 606                 if(!device->load_state(state_fio)) {
 607                         return false;
 608                 }
 609         }
 610         return true;
 611 }
 612
 613 bool VM::process_state(FILEIO* state_fio, bool loading)
 614 {
 615         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 616                 return false;
 617         }
 618         for(DEVICE* device = first_device; device; device = device->next_device) {
 619                 const char *name = typeid(*device).name() + 6; // skip "class "
 620                 int len = strlen(name);
 621
 622                 if(!state_fio->StateCheckInt32(len)) {
 623                         return false;
 624                 }
 625                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 626                         return false;
 627                 }
 628                 if(!device->process_state(state_fio, loading)) {
 629                         return false;
 630                 }
 631         }
 632         return true;
 633 }