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 AY_3_891X(this, emu);
  85 #ifdef USE_DEBUGGER
  86         psg->set_context_debugger(new DEBUGGER(this, emu));
  87 #endif
  88         pcm = new PCM1BIT(this, emu);
  89
  90         not_remote->set_device_name(_T("NOT Gate (REMOTE)"));
  91 #if defined(_MSX2)
  92         rtc = new RP5C01(this, emu);
  93         vdp = new V99X8(this, emu);
  94 #else
  95         vdp = new TMS9918A(this, emu);
  96 #endif
  97         cpu = new Z80(this, emu);
  98         joystick = new JOYSTICK(this, emu);
  99         keyboard = new KEYBOARD(this, emu);
 100         memory = new MSX_MEMORY(this, emu);
 101 #if defined(_MSX2)
 102         rtcif = new RTCIF(this, emu);
 103 #endif
 104         slot0 = new SLOT0(this, emu);   // #0: main memory
 105         slot1 = new SLOT1(this, emu);   // #1: rom-cartridge or msx-dos
 106         slot2 = new SLOT2(this, emu);   // #2: fdd-cartridge or p-basic
 107         slot3 = new SLOT3(this, emu);   // #3: rom-cartridge or ram-cartridge
 108
 109         slot0->set_device_name(_T("SLOT#0 MAIN MEMORY"));
 110         slot1->set_device_name(_T("SLOT#1 ROM CARTRIDGE"));
 111         slot2->set_device_name(_T("SLOT#2 FDD CARTRIDGE"));
 112         slot3->set_device_name(_T("SLOT#3 ROM CARTRIDGE"));
 113
 114         // set contexts
 115         event->set_context_cpu(cpu);
 116         event->set_context_sound(psg);
 117         event->set_context_sound(pcm);
 118         event->set_context_sound(drec);
 119 #if defined(_PX7)
 120         event->set_context_sound(ldp);
 121 #endif
 122         event->set_context_sound(drec->get_context_noise_play());
 123         event->set_context_sound(drec->get_context_noise_stop());
 124         event->set_context_sound(drec->get_context_noise_fast());
 125
 126         drec->set_context_ear(psg, SIG_AY_3_891X_PORT_A, 0x80);
 127         pio->set_context_port_a(memory, SIG_MEMORY_SEL, 0xff, 0);
 128         pio->set_context_port_c(keyboard, SIG_KEYBOARD_COLUMN, 0x0f, 0);
 129         pio->set_context_port_c(not_remote, SIG_NOT_INPUT, 0x10, 0);
 130         not_remote->set_context_out(drec, SIG_DATAREC_REMOTE, 1);
 131         pio->set_context_port_c(drec, SIG_DATAREC_MIC, 0x20, 0);
 132         pio->set_context_port_c(pcm, SIG_PCM1BIT_SIGNAL, 0x80, 0);
 133         psg->set_context_port_b(joystick, SIG_JOYSTICK_SEL, 0x40, 0);
 134         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
 135
 136 #if defined(_PX7)
 137         pio->set_context_port_c(slot2, SIG_SLOT2_MUTE, 0x10, 0);
 138         ldp->set_context_exv(slot2, SIG_SLOT2_EXV, 1);
 139         ldp->set_context_ack(slot2, SIG_SLOT2_ACK, 1);
 140         ldp->set_context_sound(psg, SIG_AY_3_891X_PORT_A, 0x80);
 141 #endif
 142         joystick->set_context_psg(psg);
 143 //      keyboard->set_context_cpu(cpu);
 144         keyboard->set_context_pio(pio);
 145         memory->set_context_slot(0, slot0);
 146         memory->set_context_slot(1, slot1);
 147         memory->set_context_slot(2, slot2);
 148         memory->set_context_slot(3, slot3);
 149 #if defined(_MSX2)
 150         rtcif->set_context_rtc(rtc);
 151 #endif
 152 #if defined(_PX7)
 153         slot2->set_context_cpu(cpu);
 154         slot2->set_context_ldp(ldp);
 155         slot2->set_context_vdp(vdp);
 156 #endif
 157
 158         // cpu bus
 159         cpu->set_context_mem(memory);
 160         cpu->set_context_io(io);
 161         cpu->set_context_intr(dummy);
 162 #if !defined(_PX7)
 163         cpu->set_context_bios(memory);
 164 #endif
 165 #ifdef USE_DEBUGGER
 166         cpu->set_context_debugger(new DEBUGGER(this, emu));
 167 #endif
 168
 169         // i/o bus
 170 #ifdef _MSX2
 171         io->set_iomap_range_rw(0xb4, 0xb5, rtcif);
 172         io->set_iomap_range_rw(0x98, 0x9b, vdp);
 173 #else
 174         io->set_iomap_range_rw(0x98, 0x99, vdp);
 175 #endif
 176         io->set_iomap_range_rw(0xa8, 0xab, pio);
 177         io->set_iomap_alias_w(0xa0, psg, 0);    // PSG ch
 178         io->set_iomap_alias_w(0xa1, psg, 1);    // PSG data
 179         io->set_iomap_alias_r(0xa2, psg, 1);    // PSG data
 180         io->set_iomap_range_rw(0xfc, 0xff, memory);
 181
 182         // initialize all devices
 183 #if defined(__GIT_REPO_VERSION)
 184         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 185 #endif
 186         for(DEVICE* device = first_device; device; device = device->next_device) {
 187                 device->initialize();
 188         }
 189 }
 190
 191 VM::~VM()
 192 {
 193         // delete all devices
 194         for(DEVICE* device = first_device; device;) {
 195                 DEVICE *next_device = device->next_device;
 196                 device->release();
 197                 delete device;
 198                 device = next_device;
 199         }
 200 }
 201
 202 DEVICE* VM::get_device(int id)
 203 {
 204         for(DEVICE* device = first_device; device; device = device->next_device) {
 205                 if(device->this_device_id == id) {
 206                         return device;
 207                 }
 208         }
 209         return NULL;
 210 }
 211
 212 // ----------------------------------------------------------------------------
 213 // drive virtual machine
 214 // ----------------------------------------------------------------------------
 215
 216 void VM::reset()
 217 {
 218         // reset all devices
 219         for(DEVICE* device = first_device; device; device = device->next_device) {
 220                 device->reset();
 221         }
 222 }
 223
 224 void VM::run()
 225 {
 226         event->drive();
 227 }
 228
 229 // ----------------------------------------------------------------------------
 230 // debugger
 231 // ----------------------------------------------------------------------------
 232
 233 #ifdef USE_DEBUGGER
 234 DEVICE *VM::get_cpu(int index)
 235 {
 236         if(index == 0) {
 237                 return cpu;
 238         }
 239         return NULL;
 240 }
 241 #endif
 242
 243 // ----------------------------------------------------------------------------
 244 // draw screen
 245 // ----------------------------------------------------------------------------
 246
 247 void VM::draw_screen()
 248 {
 249         vdp->draw_screen();
 250 }
 251
 252 // ----------------------------------------------------------------------------
 253 // soud manager
 254 // ----------------------------------------------------------------------------
 255
 256 void VM::initialize_sound(int rate, int samples)
 257 {
 258         // init sound manager
 259         event->initialize_sound(rate, samples);
 260
 261         // init sound gen
 262         psg->initialize_sound(rate, 3579545, samples, 0, 0);
 263         pcm->initialize_sound(rate, 8000);
 264 #if defined(_PX7)
 265         ldp->initialize_sound(rate, samples);
 266 #endif
 267 }
 268
 269 uint16_t* VM::create_sound(int* extra_frames)
 270 {
 271         return event->create_sound(extra_frames);
 272 }
 273
 274 int VM::get_sound_buffer_ptr()
 275 {
 276         return event->get_sound_buffer_ptr();
 277 }
 278
 279 #if defined(_PX7)
 280 void VM::movie_sound_callback(uint8_t *buffer, long size)
 281 {
 282         ldp->movie_sound_callback(buffer, size);
 283 }
 284 #endif
 285
 286 #ifdef USE_SOUND_VOLUME
 287 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 288 {
 289         if(ch-- == 0) {
 290                 psg->set_volume(1, decibel_l, decibel_r);
 291         } else if(ch-- == 0) {
 292                 pcm->set_volume(0, decibel_l, decibel_r);
 293         } else if(ch-- == 0) {
 294                 drec->set_volume(0, decibel_l, decibel_r);
 295 #if defined(_PX7)
 296         } else if(ch-- == 0) {
 297                 ldp->set_volume(0, decibel_l, decibel_r);
 298 #endif
 299         } else if(ch-- == 0) {
 300                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 301                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 302                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 303         }
 304 }
 305 #endif
 306
 307 // ----------------------------------------------------------------------------
 308 // user interface
 309 // ----------------------------------------------------------------------------
 310
 311 void VM::open_cart(int drv, const _TCHAR* file_path)
 312 {
 313         if(drv == 0) {
 314                 slot1->open_cart(file_path);
 315         } else {
 316                 slot3->open_cart(file_path);
 317         }
 318         reset();
 319 }
 320
 321 void VM::close_cart(int drv)
 322 {
 323         if(drv == 0) {
 324                 slot1->close_cart();
 325         } else {
 326                 slot3->close_cart();
 327         }
 328         reset();
 329 }
 330
 331 bool VM::is_cart_inserted(int drv)
 332 {
 333         if(drv == 0) {
 334                 return slot1->is_cart_inserted();
 335         } else {
 336                 return slot3->is_cart_inserted();
 337         }
 338 }
 339
 340 void VM::play_tape(int drv, const _TCHAR* file_path)
 341 {
 342         bool remote = drec->get_remote();
 343
 344         if(drec->play_tape(file_path) && remote) {
 345                 // if machine already sets remote on, start playing now
 346                 push_play(drv);
 347         }
 348 }
 349
 350 void VM::rec_tape(int drv, const _TCHAR* file_path)
 351 {
 352         bool remote = drec->get_remote();
 353
 354         if(drec->rec_tape(file_path) && remote) {
 355                 // if machine already sets remote on, start recording now
 356                 push_play(drv);
 357         }
 358 }
 359
 360 void VM::close_tape(int drv)
 361 {
 362         emu->lock_vm();
 363         drec->close_tape();
 364         emu->unlock_vm();
 365         drec->set_remote(false);
 366 }
 367
 368 bool VM::is_tape_inserted(int drv)
 369 {
 370         return drec->is_tape_inserted();
 371 }
 372
 373 bool VM::is_tape_playing(int drv)
 374 {
 375         return drec->is_tape_playing();
 376 }
 377
 378 bool VM::is_tape_recording(int drv)
 379 {
 380         return drec->is_tape_recording();
 381 }
 382
 383 int VM::get_tape_position(int drv)
 384 {
 385         return drec->get_tape_position();
 386 }
 387
 388 const _TCHAR* VM::get_tape_message(int drv)
 389 {
 390         return drec->get_message();
 391 }
 392
 393 void VM::push_play(int drv)
 394 {
 395         drec->set_remote(false);
 396         drec->set_ff_rew(0);
 397         drec->set_remote(true);
 398 }
 399
 400 void VM::push_stop(int drv)
 401 {
 402         drec->set_remote(false);
 403 }
 404
 405 void VM::push_fast_forward(int drv)
 406 {
 407         drec->set_remote(false);
 408         drec->set_ff_rew(1);
 409         drec->set_remote(true);
 410 }
 411
 412 void VM::push_fast_rewind(int drv)
 413 {
 414         drec->set_remote(false);
 415         drec->set_ff_rew(-1);
 416         drec->set_remote(true);
 417 }
 418
 419 void VM::load_binary(int drv, const _TCHAR* file_path)
 420 {
 421         if(drv == 0) {
 422                 pac2->open_rampac2(file_path);
 423         }
 424 }
 425
 426 #if defined(_PX7)
 427 void VM::open_laser_disc(int drv, const _TCHAR* file_path)
 428 {
 429         ldp->open_disc(file_path);
 430 }
 431
 432 void VM::close_laser_disc(int drv)
 433 {
 434         ldp->close_disc();
 435 }
 436
 437 bool VM::is_laser_disc_inserted(int drv)
 438 {
 439         return ldp->is_disc_inserted();
 440 }
 441
 442 uint32_t VM::is_laser_disc_accessed()
 443 {
 444         return lpd->read_signal(0);
 445 }
 446 #else
 447 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 448 {
 449         memory->open_disk(drv, file_path, bank);
 450 }
 451
 452 void VM::close_floppy_disk(int drv)
 453 {
 454         memory->close_disk(drv);
 455 }
 456
 457 bool VM::is_floppy_disk_inserted(int drv)
 458 {
 459         return memory->is_disk_inserted(drv);
 460 }
 461
 462 void VM::is_floppy_disk_protected(int drv, bool value)
 463 {
 464         memory->is_disk_protected(drv, value);
 465 }
 466
 467 bool VM::is_floppy_disk_protected(int drv)
 468 {
 469         return memory->is_disk_protected(drv);
 470 }
 471
 472 uint32_t VM::is_floppy_disk_accessed()
 473 {
 474         return memory->read_signal(0);
 475 }
 476 #endif
 477
 478 bool VM::is_frame_skippable()
 479 {
 480         return event->is_frame_skippable();
 481 }
 482
 483 void VM::update_config()
 484 {
 485         for(DEVICE* device = first_device; device; device = device->next_device) {
 486                 device->update_config();
 487         }
 488 }
 489
 490 #define STATE_VERSION   5
 491
 492 void VM::save_state(FILEIO* state_fio)
 493 {
 494         state_fio->FputUint32(STATE_VERSION);
 495
 496         for(DEVICE* device = first_device; device; device = device->next_device) {
 497                 device->save_state(state_fio);
 498         }
 499 }
 500
 501 bool VM::load_state(FILEIO* state_fio)
 502 {
 503         if(state_fio->FgetUint32() != STATE_VERSION) {
 504                 return false;
 505         }
 506         for(DEVICE* device = first_device; device; device = device->next_device) {
 507                 if(!device->load_state(state_fio)) {
 508                         return false;
 509                 }
 510         }
 511         return true;
 512 }
 513
 514 bool VM::process_state(FILEIO* state_fio, bool loading)
 515 {
 516         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 517                 return false;
 518         }
 519         for(DEVICE* device = first_device; device; device = device->next_device) {
 520                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 521                 // const char *name = typeid(*device).name();
 522                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 523                 const char *name = device->get_device_name();
 524                 int len = strlen(name);
 525
 526                 if(!state_fio->StateCheckInt32(len)) {
 527                         if(loading) {
 528                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 529                         }
 530                         return false;
 531                 }
 532                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 533                         if(loading) {
 534                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 535                         }
 536                         return false;
 537                 }
 538                 if(!device->process_state(state_fio, loading)) {
 539                         if(loading) {
 540                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 541                         }
 542                         return false;
 543                 }
 544         }
 545         // Machine specified.
 546         return true;
 547 }