source/src/vm/fm7/fm7.cpp

   1
   2 /*
   3  * FM7 -> VM
   4  * (C) 2015 K.Ohta <whatisthis.sowhat _at_ gmail.com>
   5  * History:
   6  *   Feb 27, 2015 : Initial
   7  */
   8
   9 #include "fm7.h"
  10 #include "../../emu.h"
  11 #include "../../config.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14 #include "../memory.h"
  15 #ifdef USE_DEBUGGER
  16 #include "../debugger.h"
  17 #endif
  18 #if defined(SUPPORT_DUMMY_DEVICE_LED)
  19 #include "../dummydevice.h"
  20 #else
  21 #define SIG_DUMMYDEVICE_BIT0 0
  22 #define SIG_DUMMYDEVICE_BIT1 1
  23 #define SIG_DUMMYDEVICE_BIT2 2
  24 #endif
  25
  26 #include "../datarec.h"
  27 #include "../disk.h"
  28
  29 #include "../mc6809.h"
  30 #include "../z80.h"
  31 #include "../mb8877.h"
  32
  33 #include "../pcm1bit.h"
  34 #include "../ym2203.h"
  35 #if defined(_FM77AV_VARIANTS)
  36 #include "mb61vh010.h"
  37 #include "../beep.h"
  38 #endif
  39 #if defined(HAS_DMA)
  40 #include "hd6844.h"
  41 #endif
  42
  43 #include "./fm7_mainio.h"
  44 #include "./fm7_mainmem.h"
  45 #include "./fm7_display.h"
  46 #include "./fm7_keyboard.h"
  47 #include "./joystick.h"
  48
  49 #include "./kanjirom.h"
  50
  51 VM::VM(EMU* parent_emu): emu(parent_emu)
  52 {
  53
  54         first_device = last_device = NULL;
  55         connect_opn = false;
  56         connect_whg = false;
  57         connect_thg = false;
  58 #if defined(_FM77AV_VARIANTS)
  59         opn[0] = opn[1] = opn[2] = NULL;
  60 #else
  61         opn[0] = opn[1] = opn[2] = psg = NULL;
  62 #endif
  63         dummy = new DEVICE(this, emu);  // must be 1st device
  64         event = new EVENT(this, emu);   // must be 2nd device
  65
  66         dummycpu = new DEVICE(this, emu);
  67         maincpu = new MC6809(this, emu);
  68         subcpu = new MC6809(this, emu);
  69 #ifdef WITH_Z80
  70         z80cpu = new Z80(this, emu);
  71 #endif
  72         // basic devices
  73         kanjiclass1 = new KANJIROM(this, emu, false);
  74 #ifdef CAPABLE_KANJI_CLASS2
  75         kanjiclass2 = new KANJIROM(this, emu, true);
  76 #endif
  77         joystick  = new JOYSTICK(this, emu);
  78
  79         // I/Os
  80         drec = new DATAREC(this, emu);
  81         pcm1bit = new PCM1BIT(this, emu);
  82         fdc  = new MB8877(this, emu);
  83 #if defined(HAS_DMA)
  84         dmac = new HD6844(this, emu);
  85 #endif
  86         opn[0] = new YM2203(this, emu); // OPN
  87         opn[1] = new YM2203(this, emu); // WHG
  88         opn[2] = new YM2203(this, emu); // THG
  89
  90 #if !defined(_FM77AV_VARIANTS)
  91         psg = new YM2203(this, emu);
  92 #endif
  93 #if defined(_FM77AV_VARIANTS)
  94         alu = new MB61VH010(this, emu);
  95         keyboard_beep = new BEEP(this, emu);
  96 #endif
  97         keyboard = new KEYBOARD(this, emu);
  98         display = new DISPLAY(this, emu);
  99         mainio  = new FM7_MAINIO(this, emu);
 100         mainmem = new FM7_MAINMEM(this, emu);
 101
 102 #if defined(SUPPORT_DUMMY_DEVICE_LED)
 103         led_terminate = new DUMMYDEVICE(this, emu);
 104 #else
 105         led_terminate = new DEVICE(this, emu);
 106 #endif
 107         //maincpu = new MC6809(this, emu);
 108         //subcpu = new MC6809(this, emu);
 109 #ifdef WITH_Z80
 110         //z80cpu = new Z80(this, emu);
 111 #endif
 112         // MEMORIES must set before initialize().
 113         maincpu->set_context_mem(mainmem);
 114         subcpu->set_context_mem(display);
 115 #ifdef WITH_Z80
 116         z80cpu->set_context_mem(mainmem);
 117 #endif
 118 #ifdef USE_DEBUGGER
 119         maincpu->set_context_debugger(new DEBUGGER(this, emu));
 120         subcpu->set_context_debugger(new DEBUGGER(this, emu));
 121 # ifdef WITH_Z80
 122         z80cpu->set_context_debugger(new DEBUGGER(this, emu));
 123 # endif
 124 #endif
 125         connect_bus();
 126         initialize();
 127 }
 128
 129 VM::~VM()
 130 {
 131         // delete all devices
 132         for(DEVICE* device = first_device; device;) {
 133                 DEVICE *next_device = device->next_device;
 134                 device->release();
 135                 delete device;
 136                 device = next_device;
 137         }
 138 }
 139
 140 DEVICE* VM::get_device(int id)
 141 {
 142         for(DEVICE* device = first_device; device; device = device->next_device) {
 143                 if(device->this_device_id == id) {
 144                         return device;
 145                 }
 146         }
 147         return NULL;
 148 }
 149
 150
 151 void VM::initialize(void)
 152 {
 153         clock_low = false;
 154
 155 }
 156
 157
 158 void VM::connect_bus(void)
 159 {
 160         uint32 mainclock;
 161         uint32 subclock;
 162
 163         /*
 164          * CLASS CONSTRUCTION
 165          *
 166          * VM
 167          *  |-> MAINCPU -> MAINMEM -> MAINIO -> MAIN DEVICES
 168          *  |             |        |
 169          *  | -> SUBCPU  -> SUBMEM  -> SUBIO -> SUB DEVICES
 170          *  | -> DISPLAY
 171          *  | -> KEYBOARD
 172          *
 173          *  MAINMEM can access SUBMEM/IO, when SUBCPU is halted.
 174          *  MAINMEM and SUBMEM can access DISPLAY and KEYBOARD with exclusive.
 175          *  MAINCPU can access MAINMEM.
 176          *  SUBCPU  can access SUBMEM.
 177          *  DISPLAY : R/W from MAINCPU and SUBCPU.
 178          *  KEYBOARD : R/W
 179          *
 180          */
 181         event->set_frames_per_sec(FRAMES_PER_SEC);
 182         event->set_lines_per_frame(LINES_PER_FRAME);
 183         event->set_context_cpu(dummycpu, (CPU_CLOCKS * 3) / 8); // MAYBE FIX With eFM77AV40/20.
 184         //event->set_context_cpu(dummycpu, (int)(4.9152 * 1000.0 * 1000.0 / 4.0));
 185
 186 #if defined(_FM8)
 187         mainclock = MAINCLOCK_SLOW;
 188         subclock = SUBCLOCK_SLOW;
 189 #else
 190         if(config.cpu_type == 0) {
 191                 // 2MHz
 192                 subclock = SUBCLOCK_NORMAL;
 193                 mainclock = MAINCLOCK_NORMAL;
 194         } else {
 195                 // 1.2MHz
 196                 mainclock = MAINCLOCK_SLOW;
 197                 subclock = SUBCLOCK_SLOW;
 198         }
 199         //if((config.dipswitch & FM7_DIPSW_CYCLESTEAL) != 0) subclock = subclock / 3;
 200 #endif
 201         event->set_context_cpu(maincpu, mainclock);
 202         event->set_context_cpu(subcpu,  subclock);
 203
 204 #ifdef WITH_Z80
 205         event->set_context_cpu(z80cpu,  4000000);
 206         z80cpu->write_signal(SIG_CPU_BUSREQ, 1, 1);
 207 #endif
 208
 209         event->set_context_sound(pcm1bit);
 210 #if !defined(_FM77AV_VARIANTS)
 211         mainio->set_context_psg(psg);
 212         event->set_context_sound(psg);
 213 #endif
 214         event->set_context_sound(opn[0]);
 215         event->set_context_sound(opn[1]);
 216         event->set_context_sound(opn[2]);
 217         event->set_context_sound(drec);
 218 #if defined(_FM77AV_VARIANTS)
 219         event->set_context_sound(keyboard_beep);
 220 #endif
 221
 222         event->register_frame_event(display);
 223         //event->register_vline_event(display);
 224         //event->register_vline_event(mainio);
 225
 226         mainio->set_context_maincpu(maincpu);
 227         mainio->set_context_subcpu(subcpu);
 228
 229         mainio->set_context_display(display);
 230         mainio->set_context_kanjirom_class1(kanjiclass1);
 231         mainio->set_context_mainmem(mainmem);
 232         mainio->set_context_keyboard(keyboard);
 233
 234 #if defined(CAPABLE_KANJI_CLASS2)
 235         mainio->set_context_kanjirom_class2(kanjiclass2);
 236 #endif
 237
 238         keyboard->set_context_break_line(mainio, FM7_MAINIO_PUSH_BREAK, 0xffffffff);
 239         keyboard->set_context_int_line(mainio, FM7_MAINIO_KEYBOARDIRQ, 0xffffffff);
 240         keyboard->set_context_int_line(display, SIG_FM7_SUB_KEY_FIRQ, 0xffffffff);
 241 #if defined(_FM77AV_VARIANTS)
 242         keyboard->set_context_beep(keyboard_beep);
 243 #endif
 244         keyboard->set_context_rxrdy(display, SIG_FM7KEY_RXRDY, 0x01);
 245         keyboard->set_context_key_ack(display, SIG_FM7KEY_ACK, 0x01);
 246         keyboard->set_context_ins_led( led_terminate, SIG_DUMMYDEVICE_BIT0, 0xffffffff);
 247         keyboard->set_context_caps_led(led_terminate, SIG_DUMMYDEVICE_BIT1, 0xffffffff);
 248         keyboard->set_context_kana_led(led_terminate, SIG_DUMMYDEVICE_BIT2, 0xffffffff);
 249
 250         drec->set_context_ear(mainio, FM7_MAINIO_CMT_RECV, 0xffffffff);
 251         //drec->set_context_remote(mainio, FM7_MAINIO_CMT_REMOTE, 0xffffffff);
 252         mainio->set_context_datarec(drec);
 253         mainmem->set_context_mainio(mainio);
 254         mainmem->set_context_display(display);
 255         mainmem->set_context_maincpu(maincpu);
 256 #if defined(CAPABLE_DICTROM)
 257         mainmem->set_context_kanjirom_class1(kanjiclass1);
 258 #endif
 259         display->set_context_mainio(mainio);
 260         display->set_context_subcpu(subcpu);
 261         display->set_context_keyboard(keyboard);
 262         subcpu->set_context_bus_halt(display, SIG_FM7_SUB_HALT, 0xffffffff);
 263         subcpu->set_context_bus_halt(mainmem, SIG_FM7_SUB_HALT, 0xffffffff);
 264
 265         display->set_context_kanjiclass1(kanjiclass1);
 266 #if defined(CAPABLE_KANJI_CLASS2)
 267         display->set_context_kanjiclass2(kanjiclass2);
 268 #endif
 269 #if defined(_FM77AV_VARIANTS)
 270         display->set_context_alu(alu);
 271         alu->set_context_memory(display);
 272 #endif
 273         // Palette, VSYNC, HSYNC, Multi-page, display mode.
 274         mainio->set_context_display(display);
 275
 276         //FDC
 277         mainio->set_context_fdc(fdc);
 278         fdc->set_context_irq(mainio, FM7_MAINIO_FDC_IRQ, 0x1);
 279         fdc->set_context_drq(mainio, FM7_MAINIO_FDC_DRQ, 0x1);
 280         // SOUND
 281         mainio->set_context_beep(pcm1bit);
 282
 283         opn[0]->set_context_irq(mainio, FM7_MAINIO_OPN_IRQ, 0xffffffff);
 284         mainio->set_context_opn(opn[0], 0);
 285         //joystick->set_context_opn(opn[0]);
 286         mainio->set_context_joystick(joystick);
 287         opn[0]->set_context_port_b(joystick, FM7_JOYSTICK_MOUSE_STROBE, 0xff, 0);
 288
 289         opn[1]->set_context_irq(mainio, FM7_MAINIO_WHG_IRQ, 0xffffffff);
 290         mainio->set_context_opn(opn[1], 1);
 291         opn[2]->set_context_irq(mainio, FM7_MAINIO_THG_IRQ, 0xffffffff);
 292         mainio->set_context_opn(opn[2], 2);
 293
 294         subcpu->set_context_bus_halt(display, SIG_FM7_SUB_HALT, 0xffffffff);
 295         subcpu->set_context_bus_clr(display, SIG_FM7_SUB_USE_CLR, 0x0000000f);
 296
 297         event->register_frame_event(joystick);
 298 #if defined(HAS_DMA)
 299         dmac->set_context_src(fdc, 0);
 300         dmac->set_context_dst(mainmem, 0);
 301         dmac->set_context_int_line(mainio, 0, FM7_MAINIO_DMA_INT, 0xffffffff);
 302         dmac->set_context_drq_line(maincpu, 1, SIG_CPU_BUSREQ, 0xffffffff);
 303         mainio->set_context_dmac(dmac);
 304 #endif
 305         for(DEVICE* device = first_device; device; device = device->next_device) {
 306                 device->initialize();
 307         }
 308         for(int i = 0; i < 2; i++) {
 309 #if defined(_FM77AV20) || defined(_FM77AV40SX) || defined(_FM77AV40EX) || defined(_FM77AV40SX)
 310                 fdc->set_drive_type(i, DRIVE_TYPE_2DD);
 311 #else
 312                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 313 #endif
 314 #if defined(_FM77AV_VARIANTS)
 315                 fdc->set_drive_rpm(i, 360);
 316 #else
 317                 fdc->set_drive_rpm(i, 360);
 318 #endif
 319                 fdc->set_drive_mfm(i, true);
 320         }
 321 #if defined(_FM77) || defined(_FM77L4)
 322         for(int i = 2; i < 4; i++) {
 323                 fdc->set_drive_type(i, DRIVE_TYPE_2HD);
 324                 fdc->set_drive_rpm(i, 360);
 325                 fdc->set_drive_mfm(i, true);
 326         }
 327 #endif
 328
 329 }
 330
 331 void VM::update_config()
 332 {
 333         uint32 vol1, vol2, tmpv;
 334         int ii, i_limit;
 335
 336 #if defined(SIG_YM2203_LVOLUME) && defined(SIG_YM2203_RVOLUME)
 337 # if defined(USE_MULTIPLE_SOUNDCARDS)
 338         i_limit = USE_MULTIPLE_SOUNDCARDS - 1;
 339 # else
 340 #  if !defined(_FM77AV_VARIANTS) && !defined(_FM8)
 341         i_limit = 4;
 342 #  elif defined(_FM8)
 343         i_limit = 1; // PSG Only
 344 #  else
 345         i_limit = 3;
 346 #  endif
 347 # endif
 348
 349         for(ii = 0; ii < i_limit; ii++) {
 350                 if(config.multiple_speakers) { //
 351 # if defined(USE_MULTIPLE_SOUNDCARDS)
 352                         vol1 = (config.sound_device_level[ii] + 32768) >> 8;
 353 # else
 354                         vol1 = 256;
 355 # endif //
 356
 357                         vol2 = vol1 >> 2;
 358                 } else {
 359 # if defined(USE_MULTIPLE_SOUNDCARDS)
 360                         vol1 = vol2 = (config.sound_device_level[ii] + 32768) >> 8;
 361 # else
 362                         vol1 = vol2 = 256;
 363 # endif
 364                 }
 365                 switch(ii) {
 366                 case 0: // OPN
 367                         break;
 368                 case 1: // WHG
 369                 case 3: // PSG
 370                         tmpv = vol1;
 371                         vol1 = vol2;
 372                         vol2 = tmpv;
 373                         break;
 374                 case 2: // THG
 375                         vol2 = vol1;
 376                         break;
 377                 default:
 378                         break;
 379                 }
 380                 if(ii < i_limit) {
 381                         opn[ii]->write_signal(SIG_YM2203_LVOLUME, vol1, 0xffffffff); // OPN: LEFT
 382                         opn[ii]->write_signal(SIG_YM2203_RVOLUME, vol2, 0xffffffff); // OPN: RIGHT
 383                 }
 384         }
 385 #endif
 386 #if defined(USE_MULTIPLE_SOUNDCARDS) && defined(DATAREC_SOUND)
 387         drec->write_signal(SIG_DATAREC_VOLUME, (config.sound_device_level[USE_MULTIPLE_SOUNDCARDS - 1] + 32768) >> 3, 0xffffffff);
 388 #endif
 389         for(DEVICE* device = first_device; device; device = device->next_device) {
 390                 device->update_config();
 391         }
 392         //update_dipswitch();
 393 }
 394
 395 void VM::reset()
 396 {
 397         // reset all devices
 398         for(DEVICE* device = first_device; device; device = device->next_device) {
 399                 device->reset();
 400         }
 401         //subcpu->reset();
 402         //maincpu->reset();
 403
 404         opn[0]->SetReg(0x2e, 0);        // set prescaler
 405         opn[1]->SetReg(0x2e, 0);        // set prescaler
 406         opn[2]->SetReg(0x2e, 0);        // set prescaler
 407
 408         // Init OPN/PSG.
 409         // Parameters from XM7.
 410         opn[0]->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 411         opn[1]->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 412         opn[2]->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 413
 414 #if !defined(_FM77AV_VARIANTS)
 415         psg->SetReg(0x27, 0); // stop timer
 416         psg->SetReg(0x2e, 0);   // set prescaler
 417         psg->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 418 #endif
 419 }
 420
 421 void VM::special_reset()
 422 {
 423         // BREAK + RESET
 424         mainio->write_signal(FM7_MAINIO_PUSH_BREAK, 1, 1);
 425         mainio->reset();
 426         mainmem->reset();
 427
 428 #if defined(FM77AV_VARIANTS)
 429         mainio->write_signal(FM7_MAINIO_HOT_RESET, 1, 1);
 430 #endif
 431         display->reset();
 432         subcpu->reset();
 433         mainio->write_signal(FM7_MAINIO_PUSH_BREAK, 1, 1);
 434         maincpu->reset();
 435         event->register_event(mainio, EVENT_UP_BREAK, 10000.0 * 1000.0, false, NULL);
 436 }
 437
 438 void VM::run()
 439 {
 440         event->drive();
 441 }
 442
 443 double VM::frame_rate()
 444 {
 445         return event->frame_rate();
 446 }
 447
 448 #if defined(SUPPORT_DUMMY_DEVICE_LED)
 449 uint32 VM::get_led_status()
 450 {
 451         return led_terminate->read_signal(SIG_DUMMYDEVICE_READWRITE);
 452 }
 453 #endif // SUPPORT_DUMMY_DEVICE_LED
 454
 455
 456 // ----------------------------------------------------------------------------
 457 // debugger
 458 // ----------------------------------------------------------------------------
 459
 460 #ifdef USE_DEBUGGER
 461 DEVICE *VM::get_cpu(int index)
 462 {
 463         if(index == 0) {
 464                 return maincpu;
 465         } else if(index == 1) {
 466                 return subcpu;
 467         }
 468 #if defined(_WITH_Z80)
 469         else if(index == 2) {
 470                 return z80cpu;
 471         }
 472 #endif
 473         return NULL;
 474 }
 475 #endif
 476
 477 // ----------------------------------------------------------------------------
 478 // draw screen
 479 // ----------------------------------------------------------------------------
 480
 481 void VM::draw_screen()
 482 {
 483         display->draw_screen();
 484 }
 485
 486 int VM::access_lamp()
 487 {
 488         uint32 status = fdc->read_signal(0);
 489         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 490 }
 491
 492 void VM::initialize_sound(int rate, int samples)
 493 {
 494         // init sound manager
 495         event->initialize_sound(rate, samples);
 496         // init sound gen
 497         opn[0]->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 498         opn[1]->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 499         opn[2]->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 500 #if !defined(_FM77AV_VARIANTS)
 501         psg->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 502 #endif
 503 #if defined(_FM77AV_VARIANTS)
 504         keyboard_beep->init(rate, 2400.0, 512);
 505 #endif
 506         pcm1bit->init(rate, 2000);
 507         //drec->init_pcm(rate, 0);
 508 }
 509
 510 uint16* VM::create_sound(int* extra_frames)
 511 {
 512         uint16* p = event->create_sound(extra_frames);
 513         return p;
 514 }
 515
 516 int VM::sound_buffer_ptr()
 517 {
 518         int pos = event->sound_buffer_ptr();
 519         return pos;
 520 }
 521
 522 // ----------------------------------------------------------------------------
 523 // notify key
 524 // ----------------------------------------------------------------------------
 525
 526 void VM::key_down(int code, bool repeat)
 527 {
 528         if(!repeat) {
 529                 keyboard->key_down(code);
 530         }
 531 }
 532
 533 void VM::key_up(int code)
 534 {
 535         keyboard->key_up(code);
 536 }
 537
 538 // ----------------------------------------------------------------------------
 539 // user interface
 540 // ----------------------------------------------------------------------------
 541
 542 void VM::open_disk(int drv, const _TCHAR* file_path, int bank)
 543 {
 544         fdc->open_disk(drv, file_path, bank);
 545 }
 546
 547 void VM::close_disk(int drv)
 548 {
 549         fdc->close_disk(drv);
 550 }
 551
 552 bool VM::disk_inserted(int drv)
 553 {
 554         return fdc->disk_inserted(drv);
 555 }
 556
 557 void VM::set_disk_protected(int drv, bool value)
 558 {
 559         fdc->set_disk_protected(drv, value);
 560 }
 561
 562 bool VM::get_disk_protected(int drv)
 563 {
 564         return fdc->get_disk_protected(drv);
 565 }
 566
 567 void VM::play_tape(const _TCHAR* file_path)
 568 {
 569         drec->play_tape(file_path);
 570 }
 571
 572 void VM::rec_tape(const _TCHAR* file_path)
 573 {
 574         drec->rec_tape(file_path);
 575 }
 576
 577 void VM::close_tape()
 578 {
 579         drec->close_tape();
 580 }
 581
 582 bool VM::tape_inserted()
 583 {
 584         return drec->tape_inserted();
 585 }
 586
 587 #if defined(USE_TAPE_PTR)
 588 int VM::get_tape_ptr(void)
 589 {
 590         return drec->get_tape_ptr();
 591 }
 592 #endif
 593 void VM::push_play()
 594 {
 595         drec->set_ff_rew(0);
 596         drec->set_remote(true);
 597 }
 598
 599 bool VM::get_tape_play(void)
 600 {
 601         return drec->get_tape_play();
 602 }
 603
 604 void VM::push_stop()
 605 {
 606         drec->set_remote(false);
 607 }
 608
 609 void VM::push_fast_forward()
 610 {
 611         drec->set_ff_rew(1);
 612         drec->set_remote(true);
 613 }
 614
 615 void VM::push_fast_rewind()
 616 {
 617         drec->set_ff_rew(-1);
 618         drec->set_remote(true);
 619 }
 620
 621 void VM::push_apss_forward()
 622 {
 623         drec->do_apss(1);
 624 }
 625
 626 void VM::push_apss_rewind()
 627 {
 628         drec->do_apss(-1);
 629 }
 630
 631 bool VM::now_skip()
 632 {
 633         return event->now_skip();
 634 }
 635
 636 void VM::update_dipswitch()
 637 {
 638         // bit0         0=High 1=Standard
 639         // bit2         0=5"2D 1=5"2HD
 640   //    io->set_iovalue_single_r(0x1ff0, (config.monitor_type & 1) | ((config.drive_type & 1) << 2));
 641 }
 642
 643 void VM::set_cpu_clock(DEVICE *cpu, uint32 clocks) {
 644         event->set_secondary_cpu_clock(cpu, clocks);
 645 }
 646
 647 #define STATE_VERSION   1
 648
 649 void VM::save_state(FILEIO* state_fio)
 650 {
 651         state_fio->FputUint32_BE(STATE_VERSION);
 652
 653         for(DEVICE* device = first_device; device; device = device->next_device) {
 654                 device->save_state(state_fio);
 655         }
 656         { // V1
 657                 state_fio->FputUint32_BE(connected_opns);
 658                 state_fio->FputBool(connect_opn);
 659                 state_fio->FputBool(connect_whg);
 660                 state_fio->FputBool(connect_thg);
 661                 state_fio->FputBool(clock_low);
 662         }
 663 }
 664
 665 bool VM::load_state(FILEIO* state_fio)
 666 {
 667         uint32 version = state_fio->FgetUint32_BE();
 668         int i = 1;
 669         if(version > STATE_VERSION) {
 670                 return false;
 671         }
 672         for(DEVICE* device = first_device; device; device = device->next_device) {
 673                 if(!device->load_state(state_fio)) {
 674                         printf("Load Error: DEVID=%d\n", device->this_device_id);
 675                         return false;
 676                 }
 677         }
 678         if(version >= 1) {// V1
 679                 connected_opns = state_fio->FgetUint32_BE();
 680                 connect_opn = state_fio->FgetBool();
 681                 connect_whg = state_fio->FgetBool();
 682                 connect_thg = state_fio->FgetBool();
 683                 clock_low   = state_fio->FgetBool();
 684                 if(version == 1) return true;
 685         }
 686         return false;
 687 }
 688
 689 #ifdef USE_DIG_RESOLUTION
 690 void VM::get_screen_resolution(int *w, int *h)
 691 {
 692         switch(display->get_screen_mode()) {
 693         case DISPLAY_MODE_8_200L:
 694         case DISPLAY_MODE_8_200L_TEXT:
 695                 *w = 640;
 696                 *h = 200;
 697                 break;
 698         case DISPLAY_MODE_8_400L:
 699         case DISPLAY_MODE_8_400L_TEXT:
 700                 *w = 640;
 701                 *h = 400;
 702                 break;
 703         case DISPLAY_MODE_4096:
 704         case DISPLAY_MODE_256k:
 705                 *w = 320;
 706                 *h = 200;
 707                 break;
 708         default:
 709                 *w = 640;
 710                 *h = 200;
 711                 break;
 712         }
 713 }
 714 #endif