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 #include "../prnfile.h"
  16
  17 #ifdef USE_DEBUGGER
  18 #include "../debugger.h"
  19 #endif
  20 #if defined(SUPPORT_DUMMY_DEVICE_LED)
  21 #include "../dummydevice.h"
  22 #else
  23 #define SIG_DUMMYDEVICE_BIT0 0
  24 #define SIG_DUMMYDEVICE_BIT1 1
  25 #define SIG_DUMMYDEVICE_BIT2 2
  26 #endif
  27
  28 #include "../datarec.h"
  29 #include "../disk.h"
  30
  31 #include "../mc6809.h"
  32 #include "../z80.h"
  33 #include "../mb8877.h"
  34
  35 #include "../pcm1bit.h"
  36 #include "../ym2203.h"
  37 #if defined(_FM77AV_VARIANTS)
  38 #include "mb61vh010.h"
  39 #include "../beep.h"
  40 #endif
  41 #if defined(HAS_DMA)
  42 #include "hd6844.h"
  43 #endif
  44
  45 #include "./fm7_mainio.h"
  46 #include "./fm7_mainmem.h"
  47 #include "./fm7_display.h"
  48 #include "./fm7_keyboard.h"
  49 #include "./joystick.h"
  50
  51 #include "./kanjirom.h"
  52
  53 VM::VM(EMU* parent_emu): emu(parent_emu)
  54 {
  55
  56         first_device = last_device = NULL;
  57         connect_opn = false;
  58         connect_whg = false;
  59         connect_thg = false;
  60 #if defined(_FM77AV_VARIANTS)
  61         opn[0] = opn[1] = opn[2] = NULL;
  62 #else
  63         opn[0] = opn[1] = opn[2] = psg = NULL;
  64 #endif
  65         dummy = new DEVICE(this, emu);  // must be 1st device
  66         event = new EVENT(this, emu);   // must be 2nd device
  67
  68         dummycpu = new DEVICE(this, emu);
  69         maincpu = new MC6809(this, emu);
  70         subcpu = new MC6809(this, emu);
  71 #ifdef WITH_Z80
  72         z80cpu = new Z80(this, emu);
  73 #endif
  74         // basic devices
  75         kanjiclass1 = new KANJIROM(this, emu, false);
  76 #ifdef CAPABLE_KANJI_CLASS2
  77         kanjiclass2 = new KANJIROM(this, emu, true);
  78 #endif
  79         joystick  = new JOYSTICK(this, emu);
  80
  81         // I/Os
  82         drec = new DATAREC(this, emu);
  83         pcm1bit = new PCM1BIT(this, emu);
  84         fdc  = new MB8877(this, emu);
  85 #if defined(HAS_DMA)
  86         dmac = new HD6844(this, emu);
  87 #endif
  88         opn[0] = new YM2203(this, emu); // OPN
  89         opn[1] = new YM2203(this, emu); // WHG
  90         opn[2] = new YM2203(this, emu); // THG
  91
  92 #if !defined(_FM77AV_VARIANTS)
  93         psg = new YM2203(this, emu);
  94 #endif
  95 #if defined(_FM77AV_VARIANTS)
  96         alu = new MB61VH010(this, emu);
  97         keyboard_beep = new BEEP(this, emu);
  98 #endif
  99         keyboard = new KEYBOARD(this, emu);
 100         display = new DISPLAY(this, emu);
 101         printer = new PRNFILE(this, emu);
 102         mainio  = new FM7_MAINIO(this, emu);
 103         mainmem = new FM7_MAINMEM(this, emu);
 104
 105 #if defined(SUPPORT_DUMMY_DEVICE_LED)
 106         led_terminate = new DUMMYDEVICE(this, emu);
 107 #else
 108         led_terminate = new DEVICE(this, emu);
 109 #endif
 110         //maincpu = new MC6809(this, emu);
 111         //subcpu = new MC6809(this, emu);
 112 #ifdef WITH_Z80
 113         //z80cpu = new Z80(this, emu);
 114 #endif
 115         // MEMORIES must set before initialize().
 116         maincpu->set_context_mem(mainmem);
 117         subcpu->set_context_mem(display);
 118 #ifdef WITH_Z80
 119         z80cpu->set_context_mem(mainmem);
 120 #endif
 121 #ifdef USE_DEBUGGER
 122         maincpu->set_context_debugger(new DEBUGGER(this, emu));
 123         subcpu->set_context_debugger(new DEBUGGER(this, emu));
 124 # ifdef WITH_Z80
 125         z80cpu->set_context_debugger(new DEBUGGER(this, emu));
 126 # endif
 127 #endif
 128         connect_bus();
 129         initialize();
 130 }
 131
 132 VM::~VM()
 133 {
 134         // delete all devices
 135         for(DEVICE* device = first_device; device;) {
 136                 DEVICE *next_device = device->next_device;
 137                 device->release();
 138                 delete device;
 139                 device = next_device;
 140         }
 141 }
 142
 143 DEVICE* VM::get_device(int id)
 144 {
 145         for(DEVICE* device = first_device; device; device = device->next_device) {
 146                 if(device->this_device_id == id) {
 147                         return device;
 148                 }
 149         }
 150         return NULL;
 151 }
 152
 153
 154 void VM::initialize(void)
 155 {
 156         clock_low = false;
 157
 158 }
 159
 160
 161 void VM::connect_bus(void)
 162 {
 163         uint32 mainclock;
 164         uint32 subclock;
 165
 166         /*
 167          * CLASS CONSTRUCTION
 168          *
 169          * VM
 170          *  |-> MAINCPU -> MAINMEM -> MAINIO -> MAIN DEVICES
 171          *  |             |        |
 172          *  | -> SUBCPU  -> SUBMEM  -> SUBIO -> SUB DEVICES
 173          *  | -> DISPLAY
 174          *  | -> KEYBOARD
 175          *
 176          *  MAINMEM can access SUBMEM/IO, when SUBCPU is halted.
 177          *  MAINMEM and SUBMEM can access DISPLAY and KEYBOARD with exclusive.
 178          *  MAINCPU can access MAINMEM.
 179          *  SUBCPU  can access SUBMEM.
 180          *  DISPLAY : R/W from MAINCPU and SUBCPU.
 181          *  KEYBOARD : R/W
 182          *
 183          */
 184         event->set_frames_per_sec(FRAMES_PER_SEC);
 185         event->set_lines_per_frame(LINES_PER_FRAME);
 186         event->set_context_cpu(dummycpu, (CPU_CLOCKS * 3) / 8); // MAYBE FIX With eFM77AV40/20.
 187         //event->set_context_cpu(dummycpu, (int)(4.9152 * 1000.0 * 1000.0 / 4.0));
 188
 189 #if defined(_FM8)
 190         mainclock = MAINCLOCK_SLOW;
 191         subclock = SUBCLOCK_SLOW;
 192 #else
 193         if(config.cpu_type == 0) {
 194                 // 2MHz
 195                 subclock = SUBCLOCK_NORMAL;
 196                 mainclock = MAINCLOCK_NORMAL;
 197         } else {
 198                 // 1.2MHz
 199                 mainclock = MAINCLOCK_SLOW;
 200                 subclock = SUBCLOCK_SLOW;
 201         }
 202         //if((config.dipswitch & FM7_DIPSW_CYCLESTEAL) != 0) subclock = subclock / 3;
 203 #endif
 204         event->set_context_cpu(maincpu, mainclock);
 205         event->set_context_cpu(subcpu,  subclock);
 206
 207 #ifdef WITH_Z80
 208         event->set_context_cpu(z80cpu,  4000000);
 209         z80cpu->write_signal(SIG_CPU_BUSREQ, 1, 1);
 210 #endif
 211
 212         event->set_context_sound(pcm1bit);
 213 #if !defined(_FM77AV_VARIANTS)
 214         mainio->set_context_psg(psg);
 215         event->set_context_sound(psg);
 216 #endif
 217         event->set_context_sound(opn[0]);
 218         event->set_context_sound(opn[1]);
 219         event->set_context_sound(opn[2]);
 220         event->set_context_sound(drec);
 221 #if defined(_FM77AV_VARIANTS)
 222         event->set_context_sound(keyboard_beep);
 223 #endif
 224
 225         event->register_frame_event(display);
 226         //event->register_vline_event(display);
 227         //event->register_vline_event(mainio);
 228
 229         mainio->set_context_maincpu(maincpu);
 230         mainio->set_context_subcpu(subcpu);
 231
 232         mainio->set_context_display(display);
 233         mainio->set_context_kanjirom_class1(kanjiclass1);
 234         mainio->set_context_mainmem(mainmem);
 235         mainio->set_context_keyboard(keyboard);
 236         mainio->set_context_printer(printer);
 237
 238 #if defined(CAPABLE_KANJI_CLASS2)
 239         mainio->set_context_kanjirom_class2(kanjiclass2);
 240 #endif
 241
 242         keyboard->set_context_break_line(mainio, FM7_MAINIO_PUSH_BREAK, 0xffffffff);
 243         keyboard->set_context_int_line(mainio, FM7_MAINIO_KEYBOARDIRQ, 0xffffffff);
 244         keyboard->set_context_int_line(display, SIG_FM7_SUB_KEY_FIRQ, 0xffffffff);
 245 #if defined(_FM77AV_VARIANTS)
 246         keyboard->set_context_beep(keyboard_beep);
 247 #endif
 248         keyboard->set_context_rxrdy(display, SIG_FM7KEY_RXRDY, 0x01);
 249         keyboard->set_context_key_ack(display, SIG_FM7KEY_ACK, 0x01);
 250         keyboard->set_context_ins_led( led_terminate, SIG_DUMMYDEVICE_BIT0, 0xffffffff);
 251         keyboard->set_context_caps_led(led_terminate, SIG_DUMMYDEVICE_BIT1, 0xffffffff);
 252         keyboard->set_context_kana_led(led_terminate, SIG_DUMMYDEVICE_BIT2, 0xffffffff);
 253
 254         drec->set_context_ear(mainio, FM7_MAINIO_CMT_RECV, 0xffffffff);
 255         //drec->set_context_remote(mainio, FM7_MAINIO_CMT_REMOTE, 0xffffffff);
 256         mainio->set_context_datarec(drec);
 257         mainmem->set_context_mainio(mainio);
 258         mainmem->set_context_display(display);
 259         mainmem->set_context_maincpu(maincpu);
 260 #if defined(CAPABLE_DICTROM)
 261         mainmem->set_context_kanjirom_class1(kanjiclass1);
 262 #endif
 263         display->set_context_mainio(mainio);
 264         display->set_context_subcpu(subcpu);
 265         display->set_context_keyboard(keyboard);
 266         subcpu->set_context_bus_halt(display, SIG_FM7_SUB_HALT, 0xffffffff);
 267         subcpu->set_context_bus_halt(mainmem, SIG_FM7_SUB_HALT, 0xffffffff);
 268
 269         display->set_context_kanjiclass1(kanjiclass1);
 270 #if defined(CAPABLE_KANJI_CLASS2)
 271         display->set_context_kanjiclass2(kanjiclass2);
 272 #endif
 273 #if defined(_FM77AV_VARIANTS)
 274         display->set_context_alu(alu);
 275         alu->set_context_memory(display);
 276 #endif
 277         // Palette, VSYNC, HSYNC, Multi-page, display mode.
 278         mainio->set_context_display(display);
 279
 280         //FDC
 281         mainio->set_context_fdc(fdc);
 282         fdc->set_context_irq(mainio, FM7_MAINIO_FDC_IRQ, 0x1);
 283         fdc->set_context_drq(mainio, FM7_MAINIO_FDC_DRQ, 0x1);
 284         // SOUND
 285         mainio->set_context_beep(pcm1bit);
 286
 287         opn[0]->set_context_irq(mainio, FM7_MAINIO_OPN_IRQ, 0xffffffff);
 288         mainio->set_context_opn(opn[0], 0);
 289         //joystick->set_context_opn(opn[0]);
 290         mainio->set_context_joystick(joystick);
 291         opn[0]->set_context_port_b(joystick, FM7_JOYSTICK_MOUSE_STROBE, 0xff, 0);
 292
 293         opn[1]->set_context_irq(mainio, FM7_MAINIO_WHG_IRQ, 0xffffffff);
 294         mainio->set_context_opn(opn[1], 1);
 295         opn[2]->set_context_irq(mainio, FM7_MAINIO_THG_IRQ, 0xffffffff);
 296         mainio->set_context_opn(opn[2], 2);
 297
 298         subcpu->set_context_bus_halt(display, SIG_FM7_SUB_HALT, 0xffffffff);
 299         subcpu->set_context_bus_clr(display, SIG_FM7_SUB_USE_CLR, 0x0000000f);
 300
 301         event->register_frame_event(joystick);
 302 #if defined(HAS_DMA)
 303         dmac->set_context_src(fdc, 0);
 304         dmac->set_context_dst(mainmem, 0);
 305         dmac->set_context_int_line(mainio, 0, FM7_MAINIO_DMA_INT, 0xffffffff);
 306         dmac->set_context_drq_line(maincpu, 1, SIG_CPU_BUSREQ, 0xffffffff);
 307         mainio->set_context_dmac(dmac);
 308 #endif
 309         for(DEVICE* device = first_device; device; device = device->next_device) {
 310                 device->initialize();
 311         }
 312         for(int i = 0; i < 2; i++) {
 313 #if defined(_FM77AV20) || defined(_FM77AV40SX) || defined(_FM77AV40EX) || defined(_FM77AV40SX)
 314                 fdc->set_drive_type(i, DRIVE_TYPE_2DD);
 315 #else
 316                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 317 #endif
 318 #if defined(_FM77AV_VARIANTS)
 319                 fdc->set_drive_rpm(i, 360);
 320 #else
 321                 fdc->set_drive_rpm(i, 360);
 322 #endif
 323                 fdc->set_drive_mfm(i, true);
 324         }
 325 #if defined(_FM77) || defined(_FM77L4)
 326         for(int i = 2; i < 4; i++) {
 327                 fdc->set_drive_type(i, DRIVE_TYPE_2HD);
 328                 fdc->set_drive_rpm(i, 360);
 329                 fdc->set_drive_mfm(i, true);
 330         }
 331 #endif
 332
 333 }
 334
 335 void VM::update_config()
 336 {
 337         uint32 vol1, vol2, tmpv;
 338         int ii, i_limit;
 339
 340 #if defined(SIG_YM2203_LVOLUME) && defined(SIG_YM2203_RVOLUME)
 341 # if defined(USE_MULTIPLE_SOUNDCARDS)
 342         i_limit = USE_MULTIPLE_SOUNDCARDS - 1;
 343 # else
 344 #  if !defined(_FM77AV_VARIANTS) && !defined(_FM8)
 345         i_limit = 4;
 346 #  elif defined(_FM8)
 347         i_limit = 1; // PSG Only
 348 #  else
 349         i_limit = 3;
 350 #  endif
 351 # endif
 352
 353         for(ii = 0; ii < i_limit; ii++) {
 354                 if(config.multiple_speakers) { //
 355 # if defined(USE_MULTIPLE_SOUNDCARDS)
 356                         vol1 = (config.sound_device_level[ii] + 32768) >> 8;
 357 # else
 358                         vol1 = 256;
 359 # endif //
 360
 361                         vol2 = vol1 >> 2;
 362                 } else {
 363 # if defined(USE_MULTIPLE_SOUNDCARDS)
 364                         vol1 = vol2 = (config.sound_device_level[ii] + 32768) >> 8;
 365 # else
 366                         vol1 = vol2 = 256;
 367 # endif
 368                 }
 369                 switch(ii) {
 370                 case 0: // OPN
 371                         break;
 372                 case 1: // WHG
 373                 case 3: // PSG
 374                         tmpv = vol1;
 375                         vol1 = vol2;
 376                         vol2 = tmpv;
 377                         break;
 378                 case 2: // THG
 379                         vol2 = vol1;
 380                         break;
 381                 default:
 382                         break;
 383                 }
 384                 if(ii < i_limit) {
 385                         opn[ii]->write_signal(SIG_YM2203_LVOLUME, vol1, 0xffffffff); // OPN: LEFT
 386                         opn[ii]->write_signal(SIG_YM2203_RVOLUME, vol2, 0xffffffff); // OPN: RIGHT
 387                 }
 388         }
 389 #endif
 390 #if defined(USE_MULTIPLE_SOUNDCARDS) && defined(DATAREC_SOUND)
 391         drec->write_signal(SIG_DATAREC_VOLUME, (config.sound_device_level[USE_MULTIPLE_SOUNDCARDS - 1] + 32768) >> 3, 0xffffffff);
 392 #endif
 393         for(DEVICE* device = first_device; device; device = device->next_device) {
 394                 device->update_config();
 395         }
 396         //update_dipswitch();
 397 }
 398
 399 void VM::reset()
 400 {
 401         // reset all devices
 402         for(DEVICE* device = first_device; device; device = device->next_device) {
 403                 device->reset();
 404         }
 405         //subcpu->reset();
 406         //maincpu->reset();
 407
 408         opn[0]->SetReg(0x2e, 0);        // set prescaler
 409         opn[1]->SetReg(0x2e, 0);        // set prescaler
 410         opn[2]->SetReg(0x2e, 0);        // set prescaler
 411
 412         // Init OPN/PSG.
 413         // Parameters from XM7.
 414         opn[0]->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 415         opn[1]->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 416         opn[2]->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 417
 418 #if !defined(_FM77AV_VARIANTS)
 419         psg->SetReg(0x27, 0); // stop timer
 420         psg->SetReg(0x2e, 0);   // set prescaler
 421         psg->write_signal(SIG_YM2203_MUTE, 0x00, 0x01); // Okay?
 422 #endif
 423 }
 424
 425 void VM::special_reset()
 426 {
 427         // BREAK + RESET
 428         mainio->write_signal(FM7_MAINIO_PUSH_BREAK, 1, 1);
 429         mainio->reset();
 430         mainmem->reset();
 431
 432 #if defined(FM77AV_VARIANTS)
 433         mainio->write_signal(FM7_MAINIO_HOT_RESET, 1, 1);
 434 #endif
 435         display->reset();
 436         subcpu->reset();
 437         mainio->write_signal(FM7_MAINIO_PUSH_BREAK, 1, 1);
 438         maincpu->reset();
 439         event->register_event(mainio, EVENT_UP_BREAK, 10000.0 * 1000.0, false, NULL);
 440 }
 441
 442 void VM::run()
 443 {
 444         event->drive();
 445 }
 446
 447 double VM::frame_rate()
 448 {
 449         return event->frame_rate();
 450 }
 451
 452 #if defined(SUPPORT_DUMMY_DEVICE_LED)
 453 uint32 VM::get_led_status()
 454 {
 455         return led_terminate->read_signal(SIG_DUMMYDEVICE_READWRITE);
 456 }
 457 #endif // SUPPORT_DUMMY_DEVICE_LED
 458
 459
 460 // ----------------------------------------------------------------------------
 461 // debugger
 462 // ----------------------------------------------------------------------------
 463
 464 #ifdef USE_DEBUGGER
 465 DEVICE *VM::get_cpu(int index)
 466 {
 467         if(index == 0) {
 468                 return maincpu;
 469         } else if(index == 1) {
 470                 return subcpu;
 471         }
 472 #if defined(_WITH_Z80)
 473         else if(index == 2) {
 474                 return z80cpu;
 475         }
 476 #endif
 477         return NULL;
 478 }
 479 #endif
 480
 481 // ----------------------------------------------------------------------------
 482 // draw screen
 483 // ----------------------------------------------------------------------------
 484
 485 void VM::draw_screen()
 486 {
 487         display->draw_screen();
 488 }
 489
 490 int VM::access_lamp()
 491 {
 492         uint32 status = fdc->read_signal(0);
 493         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 494 }
 495
 496 void VM::initialize_sound(int rate, int samples)
 497 {
 498         // init sound manager
 499         event->initialize_sound(rate, samples);
 500         // init sound gen
 501         opn[0]->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 502         opn[1]->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 503         opn[2]->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 504 #if !defined(_FM77AV_VARIANTS)
 505         psg->init(rate, (int)(4.9152 * 1000.0 * 1000.0 / 4.0), samples, 0, 0);
 506 #endif
 507 #if defined(_FM77AV_VARIANTS)
 508         keyboard_beep->init(rate, 2400.0, 512);
 509 #endif
 510         pcm1bit->init(rate, 2000);
 511         //drec->init_pcm(rate, 0);
 512 }
 513
 514 uint16* VM::create_sound(int* extra_frames)
 515 {
 516         uint16* p = event->create_sound(extra_frames);
 517         return p;
 518 }
 519
 520 int VM::sound_buffer_ptr()
 521 {
 522         int pos = event->sound_buffer_ptr();
 523         return pos;
 524 }
 525
 526 // ----------------------------------------------------------------------------
 527 // notify key
 528 // ----------------------------------------------------------------------------
 529
 530 void VM::key_down(int code, bool repeat)
 531 {
 532         if(!repeat) {
 533                 keyboard->key_down(code);
 534         }
 535 }
 536
 537 void VM::key_up(int code)
 538 {
 539         keyboard->key_up(code);
 540 }
 541
 542 // ----------------------------------------------------------------------------
 543 // user interface
 544 // ----------------------------------------------------------------------------
 545
 546 void VM::open_disk(int drv, const _TCHAR* file_path, int bank)
 547 {
 548         fdc->open_disk(drv, file_path, bank);
 549 }
 550
 551 void VM::close_disk(int drv)
 552 {
 553         fdc->close_disk(drv);
 554 }
 555
 556 bool VM::disk_inserted(int drv)
 557 {
 558         return fdc->disk_inserted(drv);
 559 }
 560
 561 void VM::set_disk_protected(int drv, bool value)
 562 {
 563         fdc->set_disk_protected(drv, value);
 564 }
 565
 566 bool VM::get_disk_protected(int drv)
 567 {
 568         return fdc->get_disk_protected(drv);
 569 }
 570
 571 void VM::play_tape(const _TCHAR* file_path)
 572 {
 573         drec->play_tape(file_path);
 574 }
 575
 576 void VM::rec_tape(const _TCHAR* file_path)
 577 {
 578         drec->rec_tape(file_path);
 579 }
 580
 581 void VM::close_tape()
 582 {
 583         drec->close_tape();
 584 }
 585
 586 bool VM::tape_inserted()
 587 {
 588         return drec->tape_inserted();
 589 }
 590
 591 bool VM::tape_playing()
 592 {
 593         return drec->tape_playing();
 594 }
 595
 596 bool VM::tape_recording()
 597 {
 598         return drec->tape_recording();
 599 }
 600
 601 int VM::tape_position()
 602 {
 603         return drec->tape_position();
 604 }
 605
 606 void VM::push_play()
 607 {
 608         drec->set_ff_rew(0);
 609         drec->set_remote(true);
 610 }
 611
 612
 613 void VM::push_stop()
 614 {
 615         drec->set_remote(false);
 616 }
 617
 618 void VM::push_fast_forward()
 619 {
 620         drec->set_ff_rew(1);
 621         drec->set_remote(true);
 622 }
 623
 624 void VM::push_fast_rewind()
 625 {
 626         drec->set_ff_rew(-1);
 627         drec->set_remote(true);
 628 }
 629
 630 void VM::push_apss_forward()
 631 {
 632         drec->do_apss(1);
 633 }
 634
 635 void VM::push_apss_rewind()
 636 {
 637         drec->do_apss(-1);
 638 }
 639
 640 bool VM::now_skip()
 641 {
 642         return event->now_skip();
 643 }
 644
 645 void VM::update_dipswitch()
 646 {
 647         // bit0         0=High 1=Standard
 648         // bit2         0=5"2D 1=5"2HD
 649   //    io->set_iovalue_single_r(0x1ff0, (config.monitor_type & 1) | ((config.drive_type & 1) << 2));
 650 }
 651
 652 void VM::set_cpu_clock(DEVICE *cpu, uint32 clocks) {
 653         event->set_secondary_cpu_clock(cpu, clocks);
 654 }
 655
 656 #define STATE_VERSION   1
 657
 658 void VM::save_state(FILEIO* state_fio)
 659 {
 660         state_fio->FputUint32_BE(STATE_VERSION);
 661
 662         for(DEVICE* device = first_device; device; device = device->next_device) {
 663                 device->save_state(state_fio);
 664         }
 665         { // V1
 666                 state_fio->FputUint32_BE(connected_opns);
 667                 state_fio->FputBool(connect_opn);
 668                 state_fio->FputBool(connect_whg);
 669                 state_fio->FputBool(connect_thg);
 670                 state_fio->FputBool(clock_low);
 671         }
 672 }
 673
 674 bool VM::load_state(FILEIO* state_fio)
 675 {
 676         uint32 version = state_fio->FgetUint32_BE();
 677         int i = 1;
 678         if(version > STATE_VERSION) {
 679                 return false;
 680         }
 681         for(DEVICE* device = first_device; device; device = device->next_device) {
 682                 if(!device->load_state(state_fio)) {
 683                         printf("Load Error: DEVID=%d\n", device->this_device_id);
 684                         return false;
 685                 }
 686         }
 687         if(version >= 1) {// V1
 688                 connected_opns = state_fio->FgetUint32_BE();
 689                 connect_opn = state_fio->FgetBool();
 690                 connect_whg = state_fio->FgetBool();
 691                 connect_thg = state_fio->FgetBool();
 692                 clock_low   = state_fio->FgetBool();
 693                 if(version == 1) return true;
 694         }
 695         return false;
 696 }
 697
 698 #ifdef USE_DIG_RESOLUTION
 699 void VM::get_screen_resolution(int *w, int *h)
 700 {
 701         switch(display->get_screen_mode()) {
 702         case DISPLAY_MODE_8_200L:
 703         case DISPLAY_MODE_8_200L_TEXT:
 704                 *w = 640;
 705                 *h = 200;
 706                 break;
 707         case DISPLAY_MODE_8_400L:
 708         case DISPLAY_MODE_8_400L_TEXT:
 709                 *w = 640;
 710                 *h = 400;
 711                 break;
 712         case DISPLAY_MODE_4096:
 713         case DISPLAY_MODE_256k:
 714                 *w = 320;
 715                 *h = 200;
 716                 break;
 717         default:
 718                 *w = 640;
 719                 *h = 200;
 720                 break;
 721         }
 722 }
 723 #endif
 724
 725 bool VM::screen_changed()
 726 {
 727         bool f = true;
 728 #if defined(USE_MINIMUM_RENDERING)
 729         f = display->screen_update();
 730         display->reset_screen_update();
 731 #endif
 732         return f;
 733 }