source/src/vm/mz2500/mz2500.cpp

   1 /*
   2         SHARP MZ-2500 Emulator 'EmuZ-2500'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.11.24 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "mz2500.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../disk.h"
  17 #include "../harddisk.h"
  18 #include "../i8253.h"
  19 #include "../i8255.h"
  20 #include "../io.h"
  21 #include "../mb8877.h"
  22 #include "../mz1p17.h"
  23 #include "../noise.h"
  24 #include "../pcm1bit.h"
  25 //#include "../pcpr201.h"
  26 #include "../prnfile.h"
  27 #include "../rp5c01.h"
  28 #include "../scsi_hdd.h"
  29 #include "../scsi_host.h"
  30 #include "../w3100a.h"
  31 #include "../ym2203.h"
  32 #include "../z80.h"
  33 #include "../z80pio.h"
  34 #include "../z80sio.h"
  35
  36 #ifdef USE_DEBUGGER
  37 #include "../debugger.h"
  38 #endif
  39
  40 #include "calendar.h"
  41 #include "cmt.h"
  42 #include "crtc.h"
  43 #include "floppy.h"
  44 #include "interrupt.h"
  45 #include "joystick.h"
  46 #include "keyboard.h"
  47 #include "memory.h"
  48 #include "mouse.h"
  49 #include "mz1e26.h"
  50 #include "mz1e30.h"
  51 #include "mz1r13.h"
  52 #include "mz1r37.h"
  53 #include "printer.h"
  54 #include "serial.h"
  55 #include "timer.h"
  56
  57 // ----------------------------------------------------------------------------
  58 // initialize
  59 // ----------------------------------------------------------------------------
  60
  61 VM::VM(EMU* parent_emu) : emu(parent_emu)
  62 {
  63         // create devices
  64         first_device = last_device = NULL;
  65         dummy = new DEVICE(this, emu);  // must be 1st device
  66         event = new EVENT(this, emu);   // must be 2nd device
  67         dummy->set_device_name(_T("1st Dummy"));
  68
  69         drec = new DATAREC(this, emu);
  70         drec->set_context_noise_play(new NOISE(this, emu));
  71         drec->set_context_noise_stop(new NOISE(this, emu));
  72         drec->set_context_noise_fast(new NOISE(this, emu));
  73         pit = new I8253(this, emu);
  74         pio_i = new I8255(this, emu);
  75         io = new IO(this, emu);
  76         fdc = new MB8877(this, emu);
  77         fdc->set_context_noise_seek(new NOISE(this, emu));
  78         fdc->set_context_noise_head_down(new NOISE(this, emu));
  79         fdc->set_context_noise_head_up(new NOISE(this, emu));
  80         pcm = new PCM1BIT(this, emu);
  81         rtc = new RP5C01(this, emu);    // RP-5C15
  82         sasi_host = new SCSI_HOST(this, emu);
  83         sasi_hdd = new SCSI_HDD(this, emu);
  84         sasi_hdd->set_device_name(_T("SASI Hard Disk Drive"));
  85         sasi_hdd->scsi_id = 0;
  86         sasi_hdd->bytes_per_sec = 32 * 1024; // 32KB/s
  87         for(int i = 0; i < USE_HARD_DISK; i++) {
  88                 sasi_hdd->set_disk_handler(i, new HARDDISK(emu));
  89         }
  90         sasi_hdd->set_context_interface(sasi_host);
  91         sasi_host->set_context_target(sasi_hdd);
  92         w3100a = new W3100A(this, emu);
  93         opn = new YM2203(this, emu);
  94         cpu = new Z80(this, emu);
  95         pio = new Z80PIO(this, emu);
  96         sio = new Z80SIO(this, emu);
  97
  98         pio_i->set_device_name(_T("i8255 PIO(CMT/CRTC)"));
  99         pio->set_device_name(_T("Z80 PIO(KEYBOARD/CRTC)"));
 100         sio->set_device_name(_T("Z80 SIO(MOUSE)"));
 101
 102
 103         calendar = new CALENDAR(this, emu);
 104         cmt = new CMT(this, emu);
 105         crtc = new CRTC(this, emu);
 106         floppy = new FLOPPY(this, emu);
 107         interrupt = new INTERRUPT(this, emu);
 108         joystick = new JOYSTICK(this, emu);
 109         keyboard = new KEYBOARD(this, emu);
 110         memory = new MEMORY(this, emu);
 111         mouse = new MOUSE(this, emu);
 112         mz1e26 = new MZ1E26(this, emu);
 113         mz1e30 = new MZ1E30(this, emu);
 114         mz1r13 = new MZ1R13(this, emu);
 115         mz1r37 = new MZ1R37(this, emu);
 116         printer = new PRINTER(this, emu);
 117         serial = new SERIAL(this, emu);
 118         timer = new TIMER(this, emu);
 119         // set contexts
 120         event->set_context_cpu(cpu);
 121         event->set_context_sound(opn);
 122         event->set_context_sound(pcm);
 123         event->set_context_sound(drec);
 124         event->set_context_sound(fdc->get_context_noise_seek());
 125         event->set_context_sound(fdc->get_context_noise_head_down());
 126         event->set_context_sound(fdc->get_context_noise_head_up());
 127         event->set_context_sound(drec->get_context_noise_play());
 128         event->set_context_sound(drec->get_context_noise_stop());
 129         event->set_context_sound(drec->get_context_noise_fast());
 130
 131         drec->set_context_ear(cmt, SIG_CMT_OUT, 1);
 132         drec->set_context_remote(cmt, SIG_CMT_REMOTE, 1);
 133         drec->set_context_end(cmt, SIG_CMT_END, 1);
 134         drec->set_context_top(cmt, SIG_CMT_TOP, 1);
 135
 136         pit->set_context_ch0(interrupt, SIG_INTERRUPT_I8253, 1);
 137         pit->set_context_ch0(pit, SIG_I8253_CLOCK_1, 1);
 138         pit->set_context_ch1(pit, SIG_I8253_CLOCK_2, 1);
 139         pit->set_constant_clock(0, 31250);
 140         pio_i->set_context_port_a(cmt, SIG_CMT_PIO_PA, 0xff, 0);
 141         pio_i->set_context_port_c(cmt, SIG_CMT_PIO_PC, 0xff, 0);
 142         pio_i->set_context_port_c(crtc, SIG_CRTC_MASK, 0x01, 0);
 143         pio_i->set_context_port_c(pcm, SIG_PCM1BIT_SIGNAL, 0x04, 0);
 144         // Sound:: Force realtime rendering. This is temporally fix. 20161024 K.O
 145         //pcm->set_realtime_render(true);
 146
 147
 148         rtc->set_context_alarm(interrupt, SIG_INTERRUPT_RP5C15, 1);
 149         rtc->set_context_pulse(opn, SIG_YM2203_PORT_B, 8);
 150         sasi_host->set_context_irq(mz1e30, SIG_MZ1E30_IRQ, 1);
 151         sasi_host->set_context_drq(mz1e30, SIG_MZ1E30_DRQ, 1);
 152         opn->set_context_port_a(floppy, SIG_FLOPPY_REVERSE, 0x02, 0);
 153         opn->set_context_port_a(crtc, SIG_CRTC_PALLETE, 0x04, 0);
 154         opn->set_context_port_a(mouse, SIG_MOUSE_SEL, 0x08, 0);
 155         pio->set_context_port_a(crtc, SIG_CRTC_COLUMN_SIZE, 0x20, 0);
 156         pio->set_context_port_a(keyboard, SIG_KEYBOARD_COLUMN, 0x1f, 0);
 157         sio->set_context_dtr(1, mouse, SIG_MOUSE_DTR, 1);
 158
 159         calendar->set_context_rtc(rtc);
 160         cmt->set_context_pio(pio_i);
 161         cmt->set_context_drec(drec);
 162         crtc->set_context_mem(memory);
 163         crtc->set_context_int(interrupt);
 164         crtc->set_context_pio(pio_i);
 165         crtc->set_vram_ptr(memory->get_vram());
 166         crtc->set_tvram_ptr(memory->get_tvram());
 167         crtc->set_kanji_ptr(memory->get_kanji());
 168         crtc->set_pcg_ptr(memory->get_pcg());
 169         floppy->set_context_fdc(fdc);
 170         keyboard->set_context_pio_i(pio_i);
 171         keyboard->set_context_pio(pio);
 172         memory->set_context_cpu(cpu);
 173         memory->set_context_crtc(crtc);
 174         mouse->set_context_sio(sio);
 175         mz1e30->set_context_host(sasi_host);
 176         if(config.printer_type == 0) {
 177                 printer->set_context_prn(new PRNFILE(this, emu));
 178         } else if(config.printer_type == 1) {
 179                 MZ1P17 *mz1p17 = new MZ1P17(this, emu);
 180                 mz1p17->mode = MZ1P17_MODE_MZ1;
 181                 printer->set_context_prn(mz1p17);
 182 //      } else if(config.printer_type == 2) {
 183 //              printer->set_context_prn(new PCPR201(this, emu));
 184         } else {
 185                 printer->set_context_prn(dummy);
 186         }
 187         serial->set_context_sio(sio);
 188         timer->set_context_pit(pit);
 189
 190         // cpu bus
 191         cpu->set_context_mem(memory);
 192         cpu->set_context_io(io);
 193         cpu->set_context_intr(pio);
 194 #ifdef USE_DEBUGGER
 195         cpu->set_context_debugger(new DEBUGGER(this, emu));
 196 #endif
 197
 198         // z80 family daisy chain
 199         pio->set_context_intr(cpu, 0);
 200         pio->set_context_child(sio);
 201         sio->set_context_intr(cpu, 1);
 202         sio->set_context_child(interrupt);
 203         interrupt->set_context_intr(cpu, 2);
 204
 205         // i/o bus
 206         io->set_iomap_range_rw(0x60, 0x63, w3100a);
 207         io->set_iomap_range_rw(0xa0, 0xa3, serial);
 208         io->set_iomap_range_rw(0xa4, 0xa5, mz1e30);
 209         io->set_iomap_range_rw(0xa8, 0xa9, mz1e30);
 210         io->set_iomap_range_rw(0xac, 0xad, mz1r37);
 211         io->set_iomap_single_w(0xae, crtc);
 212         io->set_iomap_range_rw(0xb0, 0xb3, serial);
 213         io->set_iomap_range_rw(0xb4, 0xb5, memory);
 214         io->set_iomap_range_rw(0xb8, 0xb9, mz1r13);
 215         io->set_iomap_range_rw(0xbc, 0xbf, crtc);
 216         io->set_iomap_range_w(0xc6, 0xc7, interrupt);
 217         io->set_iomap_range_rw(0xc8, 0xc9, opn);
 218         io->set_iomap_single_rw(0xca, mz1e26);
 219         io->set_iomap_single_rw(0xcc, calendar);
 220         io->set_iomap_single_w(0xcd, serial);
 221         io->set_iomap_range_w(0xce, 0xcf, memory);
 222         io->set_iomap_range_rw(0xd8, 0xdb, fdc);
 223         io->set_iomap_range_w(0xdc, 0xdd, floppy);
 224         io->set_iomap_range_rw(0xe0, 0xe3, pio_i);
 225         io->set_iomap_range_rw(0xe4, 0xe7, pit);
 226         io->set_iomap_range_rw(0xe8, 0xeb, pio);
 227         io->set_iomap_single_rw(0xef, joystick);
 228         io->set_iomap_range_w(0xf0, 0xf3, timer);
 229         io->set_iomap_range_rw(0xf4, 0xf7, crtc);
 230         io->set_iomap_range_rw(0xfe, 0xff, printer);
 231
 232         io->set_iowait_range_rw(0xc8, 0xc9, 1);
 233         io->set_iowait_single_rw(0xcc, 3);
 234         io->set_iowait_range_rw(0xd8, 0xdf, 1);
 235         io->set_iowait_range_rw(0xe8, 0xeb, 1);
 236
 237         // initialize all devices
 238         for(DEVICE* device = first_device; device; device = device->next_device) {
 239                 device->initialize();
 240         }
 241         for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 242 #if defined(OPEN_HARD_DISK_IN_RESET)
 243                 create_local_path(hd_file_path[drv], _MAX_PATH, _T("SASI%d.DAT"), drv);
 244 #else
 245                 open_hard_disk_tmp(drv, create_local_path(_T("SASI%d.DAT"), drv));
 246 #endif
 247         }
 248         monitor_type = config.monitor_type;
 249 }
 250
 251 VM::~VM()
 252 {
 253         // delete all devices
 254         for(DEVICE* device = first_device; device;) {
 255                 DEVICE *next_device = device->next_device;
 256                 device->release();
 257                 delete device;
 258                 device = next_device;
 259         }
 260 }
 261
 262 DEVICE* VM::get_device(int id)
 263 {
 264         for(DEVICE* device = first_device; device; device = device->next_device) {
 265                 if(device->this_device_id == id) {
 266                         return device;
 267                 }
 268         }
 269         return NULL;
 270 }
 271
 272 // ----------------------------------------------------------------------------
 273 // drive virtual machine
 274 // ----------------------------------------------------------------------------
 275
 276 void VM::reset()
 277 {
 278         // reset all devices
 279         for(DEVICE* device = first_device; device; device = device->next_device) {
 280                 device->reset();
 281         }
 282         for(int i = 0; i < MAX_DRIVE; i++) {
 283                 if(config.drive_type) {
 284                         fdc->set_drive_type(i, DRIVE_TYPE_2D);
 285                 } else {
 286                         fdc->set_drive_type(i, DRIVE_TYPE_2DD);
 287                 }
 288         }
 289
 290         // set initial port status
 291         opn->write_signal(SIG_YM2203_PORT_B, (monitor_type & 2) ? 0x77 : 0x37, 0xff);
 292
 293 #if defined(OPEN_HARD_DISK_IN_RESET)
 294         // open/close hard disk images
 295         for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 296                 if(hd_file_path[drv][0] != _T('\0')) {
 297                         open_hard_disk_tmp(drv, hd_file_path[drv]);
 298                 } else {
 299                         close_hard_disk_tmp(drv);
 300                 }
 301         }
 302 #endif
 303 }
 304
 305 void VM::special_reset()
 306 {
 307         // reset all devices
 308 //      for(DEVICE* device = first_device; device; device = device->next_device) {
 309 //              device->special_reset();
 310 //      }
 311         memory->special_reset();
 312         cpu->reset();
 313 }
 314
 315 void VM::run()
 316 {
 317         event->drive();
 318 }
 319
 320 double VM::get_frame_rate()
 321 {
 322         return event->get_frame_rate();
 323 }
 324
 325 // ----------------------------------------------------------------------------
 326 // debugger
 327 // ----------------------------------------------------------------------------
 328
 329 #ifdef USE_DEBUGGER
 330 DEVICE *VM::get_cpu(int index)
 331 {
 332         if(index == 0) {
 333                 return cpu;
 334         }
 335         return NULL;
 336 }
 337 #endif
 338
 339 // ----------------------------------------------------------------------------
 340 // draw screen
 341 // ----------------------------------------------------------------------------
 342
 343 void VM::draw_screen()
 344 {
 345         crtc->draw_screen();
 346 }
 347
 348 // ----------------------------------------------------------------------------
 349 // soud manager
 350 // ----------------------------------------------------------------------------
 351
 352 void VM::initialize_sound(int rate, int samples)
 353 {
 354         // init sound manager
 355         event->initialize_sound(rate, samples);
 356
 357         // init sound gen
 358         opn->initialize_sound(rate, 2000000, samples, 0, -8);
 359         pcm->initialize_sound(rate, 4096);
 360 }
 361
 362 uint16_t* VM::create_sound(int* extra_frames)
 363 {
 364         return event->create_sound(extra_frames);
 365 }
 366
 367 int VM::get_sound_buffer_ptr()
 368 {
 369         return event->get_sound_buffer_ptr();
 370 }
 371
 372 #ifdef USE_SOUND_VOLUME
 373 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 374 {
 375         if(ch == 0) {
 376                 opn->set_volume(0, decibel_l, decibel_r);
 377         } else if(ch == 1) {
 378                 opn->set_volume(1, decibel_l, decibel_r);
 379         } else if(ch == 2) {
 380                 pcm->set_volume(0, decibel_l, decibel_r);
 381         } else if(ch == 3) {
 382                 drec->set_volume(0, decibel_l, decibel_r);
 383         } else if(ch == 4) {
 384                 drec->set_volume(1, decibel_l, decibel_r);
 385         } else if(ch == 5) {
 386                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 387                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 388                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 389         } else if(ch == 6) {
 390                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 391                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 392                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 393         }
 394 }
 395 #endif
 396
 397 // ----------------------------------------------------------------------------
 398 // socket
 399 // ----------------------------------------------------------------------------
 400
 401 void VM::notify_socket_connected(int ch)
 402 {
 403         w3100a->notify_connected(ch);
 404 }
 405
 406 void VM::notify_socket_disconnected(int ch)
 407 {
 408         w3100a->notify_disconnected(ch);
 409 }
 410
 411 uint8_t* VM::get_socket_send_buffer(int ch, int* size)
 412 {
 413         return w3100a->get_send_buffer(ch, size);
 414 }
 415
 416 void VM::inc_socket_send_buffer_ptr(int ch, int size)
 417 {
 418         w3100a->inc_send_buffer_ptr(ch, size);
 419 }
 420
 421 uint8_t* VM::get_socket_recv_buffer0(int ch, int* size0, int* size1)
 422 {
 423         return w3100a->get_recv_buffer0(ch, size0, size1);
 424 }
 425
 426 uint8_t* VM::get_socket_recv_buffer1(int ch)
 427 {
 428         return w3100a->get_recv_buffer1(ch);
 429 }
 430
 431 void VM::inc_socket_recv_buffer_ptr(int ch, int size)
 432 {
 433         w3100a->inc_recv_buffer_ptr(ch, size);
 434 }
 435
 436 // ----------------------------------------------------------------------------
 437 // user interface
 438 // ----------------------------------------------------------------------------
 439
 440 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 441 {
 442         fdc->open_disk(drv, file_path, bank);
 443 }
 444
 445 void VM::close_floppy_disk(int drv)
 446 {
 447         fdc->close_disk(drv);
 448 }
 449
 450 bool VM::is_floppy_disk_inserted(int drv)
 451 {
 452         return fdc->is_disk_inserted(drv);
 453 }
 454
 455 void VM::is_floppy_disk_protected(int drv, bool value)
 456 {
 457         fdc->is_disk_protected(drv, value);
 458 }
 459
 460 bool VM::is_floppy_disk_protected(int drv)
 461 {
 462         return fdc->is_disk_protected(drv);
 463 }
 464
 465 uint32_t VM::is_floppy_disk_accessed()
 466 {
 467         return fdc->read_signal(0);
 468 }
 469
 470 void VM::open_hard_disk(int drv, const _TCHAR* file_path)
 471 {
 472         if(drv < USE_HARD_DISK) {
 473 #if defined(OPEN_HARD_DISK_IN_RESET)
 474                 my_tcscpy_s(hd_file_path[drv], _MAX_PATH, file_path);
 475 #else
 476                 open_hard_disk_tmp(drv, file_path);
 477 #endif
 478         }
 479 }
 480
 481 void VM::close_hard_disk(int drv)
 482 {
 483         if(drv < USE_HARD_DISK) {
 484 #if defined(OPEN_HARD_DISK_IN_RESET)
 485                 hd_file_path[drv][0] = _T('\0');
 486 #else
 487                 close_hard_disk_tmp(drv);
 488 #endif
 489         }
 490 }
 491
 492 bool VM::is_hard_disk_inserted(int drv)
 493 {
 494         if(drv < USE_HARD_DISK) {
 495 #if defined(OPEN_HARD_DISK_IN_RESET)
 496                 return (hd_file_path[drv][0] != _T('\0'));
 497 #else
 498                 return is_hard_disk_inserted_tmp(drv);
 499 #endif
 500         }
 501         return false;
 502 }
 503
 504 uint32_t VM::is_hard_disk_accessed()
 505 {
 506         uint32_t status = 0;
 507
 508         for(int drv = 0; drv < USE_HARD_DISK; drv++) {
 509                 if(sasi_hdd->get_disk_handler(drv)->accessed()) {
 510                         status |= 1 << drv;
 511                 }
 512         }
 513         return status;
 514 }
 515
 516 void VM::open_hard_disk_tmp(int drv, const _TCHAR* file_path)
 517 {
 518         if(drv < USE_HARD_DISK) {
 519                 sasi_hdd->get_disk_handler(drv)->open(file_path);
 520         }
 521 }
 522
 523 void VM::close_hard_disk_tmp(int drv)
 524 {
 525         if(drv < USE_HARD_DISK) {
 526                 sasi_hdd->get_disk_handler(drv)->close();
 527         }
 528 }
 529
 530 bool VM::is_hard_disk_inserted_tmp(int drv)
 531 {
 532         if(drv < USE_HARD_DISK) {
 533                 return sasi_hdd->get_disk_handler(drv)->mounted();
 534         }
 535         return false;
 536 }
 537
 538
 539 void VM::play_tape(int drv, const _TCHAR* file_path)
 540 {
 541         bool value = drec->play_tape(file_path);
 542         cmt->close_tape();
 543         cmt->play_tape(value);
 544 }
 545
 546 void VM::rec_tape(int drv, const _TCHAR* file_path)
 547 {
 548         bool value = drec->rec_tape(file_path);
 549         cmt->close_tape();
 550         cmt->rec_tape(value);
 551 }
 552
 553 void VM::close_tape(int drv)
 554 {
 555         emu->lock_vm();
 556         drec->close_tape();
 557         emu->unlock_vm();
 558         cmt->close_tape();
 559 }
 560
 561 bool VM::is_tape_inserted(int drv)
 562 {
 563         return drec->is_tape_inserted();
 564 }
 565
 566 bool VM::is_tape_playing(int drv)
 567 {
 568         return drec->is_tape_playing();
 569 }
 570
 571 bool VM::is_tape_recording(int drv)
 572 {
 573         return drec->is_tape_recording();
 574 }
 575
 576 int VM::get_tape_position(int drv)
 577 {
 578         return drec->get_tape_position();
 579 }
 580
 581 const _TCHAR* VM::get_tape_message(int drv)
 582 {
 583         return drec->get_message();
 584 }
 585
 586 void VM::push_play(int drv)
 587 {
 588         drec->set_ff_rew(0);
 589         drec->set_remote(true);
 590 }
 591
 592 void VM::push_stop(int drv)
 593 {
 594         drec->set_remote(false);
 595 }
 596
 597 void VM::push_fast_forward(int drv)
 598 {
 599         drec->set_ff_rew(1);
 600         drec->set_remote(true);
 601 }
 602
 603 void VM::push_fast_rewind(int drv)
 604 {
 605         drec->set_ff_rew(-1);
 606         drec->set_remote(true);
 607 }
 608
 609 bool VM::is_frame_skippable()
 610 {
 611         return event->is_frame_skippable();
 612 }
 613
 614 void VM::update_config()
 615 {
 616         for(DEVICE* device = first_device; device; device = device->next_device) {
 617                 device->update_config();
 618         }
 619 }
 620
 621 #define STATE_VERSION   7
 622
 623 #include "../../statesub.h"
 624
 625 void VM::decl_state(void)
 626 {
 627         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::MZ700_SERIES_HEAD")));
 628         DECL_STATE_ENTRY_BOOL(monitor_type);
 629         for(DEVICE* device = first_device; device; device = device->next_device) {
 630                 device->decl_state();
 631         }
 632 }
 633
 634 void VM::save_state(FILEIO* state_fio)
 635 {
 636         //state_fio->FputUint32(STATE_VERSION);
 637         if(state_entry != NULL) {
 638                 state_entry->save_state(state_fio);
 639         }
 640         for(DEVICE* device = first_device; device; device = device->next_device) {
 641                 device->save_state(state_fio);
 642         }
 643         //state_fio->FputInt32(monitor_type);
 644 }
 645
 646 bool VM::load_state(FILEIO* state_fio)
 647 {
 648         bool mb = false;
 649         if(state_entry != NULL) {
 650                 mb = state_entry->save_state(state_fio);
 651         }
 652         if(!mb) return false;
 653         //if(state_fio->FgetUint32() != STATE_VERSION) {
 654         //      return false;
 655         //}
 656         for(DEVICE* device = first_device; device; device = device->next_device) {
 657                 if(!device->load_state(state_fio)) {
 658                         return false;
 659                 }
 660         }
 661         //monitor_type = state_fio->FgetInt32();
 662         //return true;
 663 }
 664