source/src/vm/msx/msx.cpp

   1 /*
   2         ASCII MSX1 Emulator 'yaMSX1'
   3         ASCII MSX2 Emulator 'yaMSX2'
   4         Pioneer PX-7 Emulator 'ePX-7'
   5
   6         Author : tanam
   7         Date   : 2013.06.29-
   8
   9         modified by Takeda.Toshiya
  10         modified by umaiboux
  11
  12         [ virtual machine ]
  13 */
  14
  15 #include "msx.h"
  16 #include "../../emu.h"
  17 #include "../device.h"
  18 #include "../event.h"
  19
  20 #include "../datarec.h"
  21 #include "../i8255.h"
  22 #include "../io.h"
  23 #if defined(_PX7)
  24 #include "../ld700.h"
  25 #endif
  26 #include "../noise.h"
  27 #include "../not.h"
  28 //#include "../ym2203.h"
  29 #include "../ay_3_891x.h"
  30 #include "../pcm1bit.h"
  31 #if defined(_MSX2)
  32 #include "../rp5c01.h"
  33 #include "../v99x8.h"
  34 #else
  35 #include "../tms9918a.h"
  36 #endif
  37 #include "../z80.h"
  38
  39 #ifdef USE_DEBUGGER
  40 #include "../debugger.h"
  41 #endif
  42
  43 #include "joystick.h"
  44 #include "keyboard.h"
  45 #include "./memory.h"
  46 #if defined(_MSX2)
  47 #include "rtcif.h"
  48 #endif
  49
  50 using MSX::JOYSTICK;
  51 using MSX::KEYBOARD;
  52 using MSX::MEMORY;
  53 #ifdef _MSX2
  54 using MSX::RTCIF;
  55 #endif
  56 using MSX::SLOT0;
  57 using MSX::SLOT1;
  58 using MSX::SLOT2;
  59 using MSX::SLOT3;
  60
  61 // ----------------------------------------------------------------------------
  62 // initialize
  63 // ----------------------------------------------------------------------------
  64
  65 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  66 {
  67         // create devices
  68         first_device = last_device = NULL;
  69         dummy = new DEVICE(this, emu);  // must be 1st device
  70         event = new EVENT(this, emu);   // must be 2nd device
  71         dummy->set_device_name(_T("1st Dummy"));
  72         event->set_device_name(_T("EVENT"));
  73
  74         drec = new DATAREC(this, emu);
  75         drec->set_context_noise_play(new NOISE(this, emu));
  76         drec->set_context_noise_stop(new NOISE(this, emu));
  77         drec->set_context_noise_fast(new NOISE(this, emu));
  78         pio = new I8255(this, emu);
  79         io = new IO(this, emu);
  80 #if defined(_PX7)
  81         ldp = new LD700(this, emu);
  82 #endif
  83         not_remote = new NOT(this, emu);
  84 //      psg = new YM2203(this, emu);
  85         psg = new AY_3_891X(this, emu);
  86         pcm = new PCM1BIT(this, emu);
  87         not_remote->set_device_name(_T("NOT Gate (REMOTE)"));
  88
  89 #if defined(_MSX2)
  90         rtc = new RP5C01(this, emu);
  91         vdp = new V99X8(this, emu);
  92 #else
  93         vdp = new TMS9918A(this, emu);
  94 #endif
  95         cpu = new Z80(this, emu);
  96         joystick = new JOYSTICK(this, emu);
  97         keyboard = new KEYBOARD(this, emu);
  98         memory = new MSX_MEMORY(this, emu);
  99 #if defined(_MSX2)
 100         rtcif = new RTCIF(this, emu);
 101 #endif
 102         slot0 = new SLOT0(this, emu);   // #0: main memory
 103         slot1 = new SLOT1(this, emu);   // #1: rom-cartridge or msx-dos
 104         slot2 = new SLOT2(this, emu);   // #2: fdd-cartridge or p-basic
 105         slot3 = new SLOT3(this, emu);   // #3: rom-cartridge or ram-cartridge
 106
 107         slot0->set_device_name(_T("SLOT#0 MAIN MEMORY"));
 108         slot1->set_device_name(_T("SLOT#1 ROM CARTRIDGE"));
 109         slot2->set_device_name(_T("SLOT#2 FDD CARTRIDGE"));
 110         slot3->set_device_name(_T("SLOT#3 ROM CARTRIDGE"));
 111
 112         // set contexts
 113         event->set_context_cpu(cpu);
 114         event->set_context_sound(psg);
 115         event->set_context_sound(pcm);
 116         event->set_context_sound(drec);
 117 #if defined(_PX7)
 118         event->set_context_sound(ldp);
 119 #endif
 120         event->set_context_sound(drec->get_context_noise_play());
 121         event->set_context_sound(drec->get_context_noise_stop());
 122         event->set_context_sound(drec->get_context_noise_fast());
 123
 124         drec->set_context_ear(psg, SIG_AY_3_891X_PORT_A, 0x80);
 125         pio->set_context_port_a(memory, SIG_MEMORY_SEL, 0xff, 0);
 126         pio->set_context_port_c(keyboard, SIG_KEYBOARD_COLUMN, 0x0f, 0);
 127         pio->set_context_port_c(not_remote, SIG_NOT_INPUT, 0x10, 0);
 128         not_remote->set_context_out(drec, SIG_DATAREC_REMOTE, 1);
 129         pio->set_context_port_c(drec, SIG_DATAREC_MIC, 0x20, 0);
 130         pio->set_context_port_c(pcm, SIG_PCM1BIT_SIGNAL, 0x80, 0);
 131         psg->set_context_port_b(joystick, SIG_JOYSTICK_SEL, 0x40, 0);
 132         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
 133
 134 #if defined(_PX7)
 135         pio->set_context_port_c(slot2, SIG_SLOT2_MUTE, 0x10, 0);
 136         ldp->set_context_exv(slot2, SIG_SLOT2_EXV, 1);
 137         ldp->set_context_ack(slot2, SIG_SLOT2_ACK, 1);
 138         ldp->set_context_sound(psg, SIG_AY_3_891X_PORT_A, 0x80);
 139 #endif
 140         joystick->set_context_psg(psg);
 141 //      keyboard->set_context_cpu(cpu);
 142         keyboard->set_context_pio(pio);
 143         memory->set_context_slot(0, slot0);
 144         memory->set_context_slot(1, slot1);
 145         memory->set_context_slot(2, slot2);
 146         memory->set_context_slot(3, slot3);
 147 #if defined(_MSX2)
 148         rtcif->set_context_rtc(rtc);
 149 #endif
 150 #if defined(_PX7)
 151         slot2->set_context_cpu(cpu);
 152         slot2->set_context_ldp(ldp);
 153         slot2->set_context_vdp(vdp);
 154 #endif
 155
 156         // cpu bus
 157         cpu->set_context_mem(memory);
 158         cpu->set_context_io(io);
 159         cpu->set_context_intr(dummy);
 160 #if !defined(_PX7)
 161         cpu->set_context_bios(memory);
 162 #endif
 163 #ifdef USE_DEBUGGER
 164         cpu->set_context_debugger(new DEBUGGER(this, emu));
 165 #endif
 166
 167         // i/o bus
 168 #ifdef _MSX2
 169         io->set_iomap_range_rw(0xb4, 0xb5, rtcif);
 170         io->set_iomap_range_rw(0x98, 0x9b, vdp);
 171 #else
 172         io->set_iomap_range_rw(0x98, 0x99, vdp);
 173 #endif
 174         io->set_iomap_range_rw(0xa8, 0xab, pio);
 175         io->set_iomap_alias_w(0xa0, psg, 0);    // PSG ch
 176         io->set_iomap_alias_w(0xa1, psg, 1);    // PSG data
 177         io->set_iomap_alias_r(0xa2, psg, 1);    // PSG data
 178         io->set_iomap_range_rw(0xfc, 0xff, memory);
 179
 180         // initialize all devices
 181 #if defined(__GIT_REPO_VERSION)
 182         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 183 #endif
 184         for(DEVICE* device = first_device; device; device = device->next_device) {
 185                 device->initialize();
 186         }
 187 }
 188
 189 VM::~VM()
 190 {
 191         // delete all devices
 192         for(DEVICE* device = first_device; device;) {
 193                 DEVICE *next_device = device->next_device;
 194                 device->release();
 195                 delete device;
 196                 device = next_device;
 197         }
 198 }
 199
 200 DEVICE* VM::get_device(int id)
 201 {
 202         for(DEVICE* device = first_device; device; device = device->next_device) {
 203                 if(device->this_device_id == id) {
 204                         return device;
 205                 }
 206         }
 207         return NULL;
 208 }
 209
 210 // ----------------------------------------------------------------------------
 211 // drive virtual machine
 212 // ----------------------------------------------------------------------------
 213
 214 void VM::reset()
 215 {
 216         // reset all devices
 217         for(DEVICE* device = first_device; device; device = device->next_device) {
 218                 device->reset();
 219         }
 220 }
 221
 222 void VM::run()
 223 {
 224         event->drive();
 225 }
 226
 227 // ----------------------------------------------------------------------------
 228 // debugger
 229 // ----------------------------------------------------------------------------
 230
 231 #ifdef USE_DEBUGGER
 232 DEVICE *VM::get_cpu(int index)
 233 {
 234         if(index == 0) {
 235                 return cpu;
 236         }
 237         return NULL;
 238 }
 239 #endif
 240
 241 // ----------------------------------------------------------------------------
 242 // draw screen
 243 // ----------------------------------------------------------------------------
 244
 245 void VM::draw_screen()
 246 {
 247         vdp->draw_screen();
 248 }
 249
 250 // ----------------------------------------------------------------------------
 251 // soud manager
 252 // ----------------------------------------------------------------------------
 253
 254 void VM::initialize_sound(int rate, int samples)
 255 {
 256         // init sound manager
 257         event->initialize_sound(rate, samples);
 258
 259         // init sound gen
 260         psg->initialize_sound(rate, 3579545, samples, 0, 0);
 261         pcm->initialize_sound(rate, 8000);
 262 #if defined(_PX7)
 263         ldp->initialize_sound(rate, samples);
 264 #endif
 265 }
 266
 267 uint16_t* VM::create_sound(int* extra_frames)
 268 {
 269         return event->create_sound(extra_frames);
 270 }
 271
 272 int VM::get_sound_buffer_ptr()
 273 {
 274         return event->get_sound_buffer_ptr();
 275 }
 276
 277 #if defined(_PX7)
 278 void VM::movie_sound_callback(uint8_t *buffer, long size)
 279 {
 280         ldp->movie_sound_callback(buffer, size);
 281 }
 282 #endif
 283
 284 #ifdef USE_SOUND_VOLUME
 285 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 286 {
 287         if(ch-- == 0) {
 288                 psg->set_volume(1, decibel_l, decibel_r);
 289         } else if(ch-- == 0) {
 290                 pcm->set_volume(0, decibel_l, decibel_r);
 291         } else if(ch-- == 0) {
 292                 drec->set_volume(0, decibel_l, decibel_r);
 293 #if defined(_PX7)
 294         } else if(ch-- == 0) {
 295                 ldp->set_volume(0, decibel_l, decibel_r);
 296 #endif
 297         } else if(ch-- == 0) {
 298                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 299                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 300                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 301         }
 302 }
 303 #endif
 304
 305 // ----------------------------------------------------------------------------
 306 // user interface
 307 // ----------------------------------------------------------------------------
 308
 309 void VM::open_cart(int drv, const _TCHAR* file_path)
 310 {
 311         if(drv == 0) {
 312                 slot1->open_cart(file_path);
 313         } else {
 314                 slot3->open_cart(file_path);
 315         }
 316         reset();
 317 }
 318
 319 void VM::close_cart(int drv)
 320 {
 321         if(drv == 0) {
 322                 slot1->close_cart();
 323         } else {
 324                 slot3->close_cart();
 325         }
 326         reset();
 327 }
 328
 329 bool VM::is_cart_inserted(int drv)
 330 {
 331         if(drv == 0) {
 332                 return slot1->is_cart_inserted();
 333         } else {
 334                 return slot3->is_cart_inserted();
 335         }
 336 }
 337
 338 void VM::play_tape(int drv, const _TCHAR* file_path)
 339 {
 340         bool remote = drec->get_remote();
 341
 342         if(drec->play_tape(file_path) && remote) {
 343                 // if machine already sets remote on, start playing now
 344                 push_play(drv);
 345         }
 346 }
 347
 348 void VM::rec_tape(int drv, const _TCHAR* file_path)
 349 {
 350         bool remote = drec->get_remote();
 351
 352         if(drec->rec_tape(file_path) && remote) {
 353                 // if machine already sets remote on, start recording now
 354                 push_play(drv);
 355         }
 356 }
 357
 358 void VM::close_tape(int drv)
 359 {
 360         emu->lock_vm();
 361         drec->close_tape();
 362         emu->unlock_vm();
 363         drec->set_remote(false);
 364 }
 365
 366 bool VM::is_tape_inserted(int drv)
 367 {
 368         return drec->is_tape_inserted();
 369 }
 370
 371 bool VM::is_tape_playing(int drv)
 372 {
 373         return drec->is_tape_playing();
 374 }
 375
 376 bool VM::is_tape_recording(int drv)
 377 {
 378         return drec->is_tape_recording();
 379 }
 380
 381 int VM::get_tape_position(int drv)
 382 {
 383         return drec->get_tape_position();
 384 }
 385
 386 const _TCHAR* VM::get_tape_message(int drv)
 387 {
 388         return drec->get_message();
 389 }
 390
 391 void VM::push_play(int drv)
 392 {
 393         drec->set_remote(false);
 394         drec->set_ff_rew(0);
 395         drec->set_remote(true);
 396 }
 397
 398 void VM::push_stop(int drv)
 399 {
 400         drec->set_remote(false);
 401 }
 402
 403 void VM::push_fast_forward(int drv)
 404 {
 405         drec->set_remote(false);
 406         drec->set_ff_rew(1);
 407         drec->set_remote(true);
 408 }
 409
 410 void VM::push_fast_rewind(int drv)
 411 {
 412         drec->set_remote(false);
 413         drec->set_ff_rew(-1);
 414         drec->set_remote(true);
 415 }
 416
 417 void VM::load_binary(int drv, const _TCHAR* file_path)
 418 {
 419         if(drv == 0) {
 420                 pac2->open_rampac2(file_path);
 421         }
 422 }
 423
 424 #if defined(_PX7)
 425 void VM::open_laser_disc(int drv, const _TCHAR* file_path)
 426 {
 427         ldp->open_disc(file_path);
 428 }
 429
 430 void VM::close_laser_disc(int drv)
 431 {
 432         ldp->close_disc();
 433 }
 434
 435 bool VM::is_laser_disc_inserted(int drv)
 436 {
 437         return ldp->is_disc_inserted();
 438 }
 439
 440 uint32_t VM::is_laser_disc_accessed()
 441 {
 442         return lpd->read_signal(0);
 443 }
 444 #else
 445 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 446 {
 447         memory->open_disk(drv, file_path, bank);
 448 }
 449
 450 void VM::close_floppy_disk(int drv)
 451 {
 452         memory->close_disk(drv);
 453 }
 454
 455 bool VM::is_floppy_disk_inserted(int drv)
 456 {
 457         return memory->is_disk_inserted(drv);
 458 }
 459
 460 void VM::is_floppy_disk_protected(int drv, bool value)
 461 {
 462         memory->is_disk_protected(drv, value);
 463 }
 464
 465 bool VM::is_floppy_disk_protected(int drv)
 466 {
 467         return memory->is_disk_protected(drv);
 468 }
 469
 470 uint32_t VM::is_floppy_disk_accessed()
 471 {
 472         return memory->read_signal(0);
 473 }
 474 #endif
 475
 476 bool VM::is_frame_skippable()
 477 {
 478         return event->is_frame_skippable();
 479 }
 480
 481 void VM::update_config()
 482 {
 483         for(DEVICE* device = first_device; device; device = device->next_device) {
 484                 device->update_config();
 485         }
 486 }
 487
 488 #define STATE_VERSION   4
 489
 490 void VM::save_state(FILEIO* state_fio)
 491 {
 492         state_fio->FputUint32(STATE_VERSION);
 493
 494         for(DEVICE* device = first_device; device; device = device->next_device) {
 495                 device->save_state(state_fio);
 496         }
 497 }
 498
 499 bool VM::load_state(FILEIO* state_fio)
 500 {
 501         if(state_fio->FgetUint32() != STATE_VERSION) {
 502                 return false;
 503         }
 504         for(DEVICE* device = first_device; device; device = device->next_device) {
 505                 if(!device->load_state(state_fio)) {
 506                         return false;
 507                 }
 508         }
 509         return true;
 510 }
 511
 512 bool VM::process_state(FILEIO* state_fio, bool loading)
 513 {
 514         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 515                 return false;
 516         }
 517         for(DEVICE* device = first_device; device; device = device->next_device) {
 518                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 519                 // const char *name = typeid(*device).name();
 520                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 521                 const char *name = device->get_device_name();
 522                 int len = strlen(name);
 523
 524                 if(!state_fio->StateCheckInt32(len)) {
 525                         if(loading) {
 526                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 527                         }
 528                         return false;
 529                 }
 530                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 531                         if(loading) {
 532                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 533                         }
 534                         return false;
 535                 }
 536                 if(!device->process_state(state_fio, loading)) {
 537                         if(loading) {
 538                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 539                         }
 540                         return false;
 541                 }
 542         }
 543         // Machine specified.
 544         return true;
 545 }