source/src/vm/gamegear/mastersystem.cpp

   1 /*
   2         SEGA MASTER SYSTEM Emulator 'yaMASTER SYSTEM'
   3
   4         Author : tanam
   5         Date   : 2013.10.20-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "mastersystem.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 ///#include "../datarec.h"
  16 ///#include "../disk.h"
  17 ///#include "../i8251.h"
  18 #include "../i8255.h"
  19 #include "../io.h"
  20 ///#include "../noise.h"
  21 #include "../ym2413.h"
  22 #include "../sn76489an.h"
  23 #include "../315-5124.h"
  24 ///#include "../upd765a.h"
  25 #include "../z80.h"
  26
  27 #ifdef USE_DEBUGGER
  28 #include "../debugger.h"
  29 #endif
  30
  31 #include "keyboard.h"
  32 #include "./memory.h"
  33 #include "./system.h"
  34
  35 // ----------------------------------------------------------------------------
  36 // initialize
  37 // ----------------------------------------------------------------------------
  38
  39 using GAMEGEAR::KEYBOARD;
  40 using GAMEGEAR::MEMORY;
  41 using GAMEGEAR::SYSTEM;
  42
  43 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  44 {
  45         // create devices
  46         first_device = last_device = NULL;
  47         dummy = new DEVICE(this, emu);  // must be 1st device
  48         event = new EVENT(this, emu);   // must be 2nd device
  49         dummy->set_device_name(_T("1st Dummy"));
  50 ///     drec = new DATAREC(this, emu);
  51 ///     drec->set_context_noise_play(new NOISE(this, emu));
  52 ///     drec->set_context_noise_stop(new NOISE(this, emu));
  53 ///     drec->set_context_noise_fast(new NOISE(this, emu));
  54 ///     sio = new I8251(this, emu);
  55         pio_k = new I8255(this, emu);
  56         pio_k->set_device_name(_T("8255 PIO (Keyboard)"));
  57         pio_f = new I8255(this, emu);
  58         pio_f->set_device_name(_T("8255 PIO (Floppy I/F)"));
  59         io = new IO(this, emu);
  60         psg = new SN76489AN(this, emu);
  61         fm = new YM2413(this, emu);
  62         vdp = new _315_5124(this, emu);
  63 ///     fdc = new UPD765A(this, emu);
  64 ///     fdc->set_context_noise_seek(new NOISE(this, emu));
  65 ///     fdc->set_context_noise_head_down(new NOISE(this, emu));
  66 //      fdc->set_context_noise_head_up(new NOISE(this, emu));
  67         cpu = new Z80(this, emu);
  68
  69         key = new KEYBOARD(this, emu);
  70         memory = new MEMORY(this, emu);
  71         system = new SYSTEM(this, emu);
  72
  73         // set contexts
  74         event->set_context_cpu(cpu);
  75         event->set_context_sound(psg);
  76         event->set_context_sound(fm);
  77 ///     event->set_context_sound(fdc->get_context_noise_seek());
  78 ///     event->set_context_sound(fdc->get_context_noise_head_down());
  79 ///     event->set_context_sound(fdc->get_context_noise_head_up());
  80 ///     event->set_context_sound(drec->get_context_noise_play());
  81 ///     event->set_context_sound(drec->get_context_noise_stop());
  82 ///     event->set_context_sound(drec->get_context_noise_fast());
  83
  84
  85 ///     drec->set_context_ear(pio_k, SIG_I8255_PORT_B, 0x80);
  86         pio_k->set_context_port_c(key, SIG_KEYBOARD_COLUMN, 0x07, 0);
  87 ///     pio_k->set_context_port_c(drec, SIG_DATAREC_REMOTE, 0x08, 0);
  88 ///     pio_k->set_context_port_c(drec, SIG_DATAREC_MIC, 0x10, 0);
  89 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_MOTOR_NEG, 2, 0);
  90 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_TC, 4, 0);
  91 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_RESET, 8, 0);
  92         pio_f->set_context_port_c(memory, SIG_MEMORY_SEL, 0x40, 0);
  93         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
  94 ///     fdc->set_context_irq(pio_f, SIG_I8255_PORT_A, 1);
  95 ///     fdc->set_context_index(pio_f, SIG_I8255_PORT_A, 4);
  96
  97         key->set_context_cpu(cpu);
  98         key->set_context_pio(pio_k);
  99         system->set_context_key(key);
 100         vdp->set_context_key(key);
 101         vdp->set_context_psg(psg);
 102 ///     vdp->set_context_cpu(cpu);
 103
 104         // cpu bus
 105         cpu->set_context_mem(memory);
 106         cpu->set_context_io(io);
 107         cpu->set_context_intr(system);
 108 #ifdef USE_DEBUGGER
 109         cpu->set_context_debugger(new DEBUGGER(this, emu));
 110 #endif
 111
 112         // i/o bus
 113         io->set_iomap_single_r(0x00, system);           // GG  START
 114         io->set_iomap_single_w(0x80, system);           // COL TENKEY
 115         io->set_iomap_single_w(0xc0, system);           // COL JOYPAD
 116         io->set_iomap_range_rw(0xfc, 0xfe, system);     // COL JOYPAD
 117         io->set_iomap_range_rw(0xff, 0xff, psg);        // COL PSG
 118         io->set_iomap_range_rw(0x7e, 0x7f, vdp);        // SG  VDP
 119         io->set_iomap_range_rw(0xbe, 0xbf, vdp);        // SG  VDP
 120         io->set_iomap_range_rw(0xdc, 0xdf, pio_k);      // SG  KEY
 121 ///     io->set_iomap_range_rw(0xe0, 0xe3, fdc);        // SG  FDD
 122 ///     io->set_iomap_range_rw(0xe4, 0xe7, pio_f);      // SG  FDD
 123 ///     io->set_iomap_range_rw(0xe8, 0xe9, sio);        // SG  SERIAL
 124         io->set_iomap_range_rw(0xf0, 0xf2, fm);         // MS  FM
 125
 126         // initialize all devices
 127 #if defined(__GIT_REPO_VERSION)
 128         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 129 #endif
 130         for(DEVICE* device = first_device; device; device = device->next_device) {
 131                 device->initialize();
 132         }
 133
 134         // BIOS
 135 ///     memory->bios();
 136         memory->open_cart(create_local_path(_T("SMS.ROM")));
 137 ///     for(int i = 0; i < 4; i++) {
 138 ///             fdc->set_drive_type(i, DRIVE_TYPE_2D);
 139 ///     }
 140 }
 141
 142 VM::~VM()
 143 {
 144         // delete all devices
 145         for(DEVICE* device = first_device; device;) {
 146                 DEVICE *next_device = device->next_device;
 147                 device->release();
 148                 delete device;
 149                 device = next_device;
 150         }
 151 }
 152
 153 DEVICE* VM::get_device(int id)
 154 {
 155         for(DEVICE* device = first_device; device; device = device->next_device) {
 156                 if(device->this_device_id == id) {
 157                         return device;
 158                 }
 159         }
 160         return NULL;
 161 }
 162
 163 // ----------------------------------------------------------------------------
 164 // drive virtual machine
 165 // ----------------------------------------------------------------------------
 166
 167 void VM::reset()
 168 {
 169         // reset all devices
 170         for(DEVICE* device = first_device; device; device = device->next_device) {
 171                 device->reset();
 172         }
 173 }
 174
 175 void VM::run()
 176 {
 177         event->drive();
 178 }
 179
 180 // ----------------------------------------------------------------------------
 181 // debugger
 182 // ----------------------------------------------------------------------------
 183
 184 #ifdef USE_DEBUGGER
 185 DEVICE *VM::get_cpu(int index)
 186 {
 187         if(index == 0) {
 188                 return cpu;
 189         }
 190         return NULL;
 191 }
 192 #endif
 193
 194 // ----------------------------------------------------------------------------
 195 // draw screen
 196 // ----------------------------------------------------------------------------
 197
 198 void VM::draw_screen()
 199 {
 200         vdp->draw_screen();
 201 }
 202
 203 // ----------------------------------------------------------------------------
 204 // soud manager
 205 // ----------------------------------------------------------------------------
 206
 207 void VM::initialize_sound(int rate, int samples)
 208 {
 209         // init sound manager
 210         event->initialize_sound(rate, samples);
 211
 212         // init sound gen
 213         psg->initialize_sound(rate, 3579545, 4000);
 214         fm->initialize_sound(rate, 3579545, samples);
 215 }
 216
 217 uint16_t* VM::create_sound(int* extra_frames)
 218 {
 219         return event->create_sound(extra_frames);
 220 }
 221
 222 int VM::get_sound_buffer_ptr()
 223 {
 224         return event->get_sound_buffer_ptr();
 225 }
 226
 227 #ifdef USE_SOUND_VOLUME
 228 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 229 {
 230         if(ch == 0) {
 231                 psg->set_volume(0, decibel_l, decibel_r);
 232         } else if(ch == 1) {
 233                 fm->set_volume(0, decibel_l, decibel_r);
 234 ///     } else if(ch == 2) {
 235 ///             fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 236 ///             fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 237 ///             fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 238 ///     } else if(ch == 3) {
 239 ///             drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 240 ///             drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 241 ///             drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 242         }
 243 }
 244 #endif
 245
 246 // ----------------------------------------------------------------------------
 247 // user interface
 248 // ----------------------------------------------------------------------------
 249
 250 void VM::open_cart(int drv, const _TCHAR* file_path)
 251 {
 252         if(drv == 0) {
 253                 memory->open_cart(file_path);
 254                 if (check_file_extension(file_path, _T(".col"))) {
 255                         vdp->set_context_irq(cpu, SIG_CPU_NMI, 1);
 256                         vdp->set_console(0x00);
 257                         memory->bios();
 258                 } else {
 259                         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
 260                         if (check_file_extension(file_path, _T(".gg"))) {
 261                                 vdp->set_console(0x40);
 262                         } else {
 263                                 vdp->set_console(0x20);
 264                         }
 265                 }
 266                 reset();
 267         }
 268 }
 269
 270 void VM::close_cart(int drv)
 271 {
 272         if(drv == 0) {
 273                 memory->close_cart();
 274                 reset();
 275         }
 276 }
 277
 278 bool VM::is_cart_inserted(int drv)
 279 {
 280         if(drv == 0) {
 281                 return memory->is_cart_inserted();
 282         } else {
 283                 return false;
 284         }
 285 }
 286
 287 ///void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 288 ///{
 289 ///     fdc->open_disk(drv, file_path, bank);
 290 ///}
 291
 292 ///void VM::close_floppy_disk(int drv)
 293 ///{
 294 ///     fdc->close_disk(drv);
 295 ///}
 296
 297 ///bool VM::is_floppy_disk_inserted(int drv)
 298 ///{
 299 ///     return fdc->is_disk_inserted(drv);
 300 ///}
 301
 302 ///void VM::is_floppy_disk_protected(int drv, bool value)
 303 ///{
 304 ///     fdc->is_disk_protected(drv, value);
 305 ///}
 306
 307 ///bool VM::is_floppy_disk_protected(int drv)
 308 ///{
 309 ///     return fdc->is_disk_protected(drv);
 310 ///}
 311
 312 ///uint32_t VM::is_floppy_disk_accessed()
 313 ///{
 314 ///     return fdc->read_signal(0);
 315 ///}
 316
 317 ///void VM::play_tape(int drv, const _TCHAR* file_path)
 318 ///{
 319 ///     drec->play_tape(file_path);
 320 ///     drec->set_remote(true);
 321 ///}
 322
 323 ///void VM::rec_tape(int drv, const _TCHAR* file_path)
 324 ///{
 325 ///     drec->rec_tape(file_path);
 326 ///     drec->set_remote(true);
 327 ///}
 328
 329 ///void VM::close_tape(int drv)
 330 ///{
 331 ///     emu->lock_vm();
 332 ///     drec->close_tape();
 333 ///     emu->unlock_vm();
 334 ///     drec->set_remote(false);
 335 ///}
 336
 337 ///bool VM::is_tape_inserted(int drv)
 338 ///{
 339 ///     return drec->is_tape_inserted();
 340 ///}
 341
 342 ///bool VM::is_tape_playing(int drv)
 343 ///{
 344 ///     return drec->is_tape_playing();
 345 ///}
 346
 347 ///bool VM::is_tape_recording(int drv)
 348 ///{
 349 ///     return drec->is_tape_recording();
 350 ///}
 351
 352 ///int VM::get_tape_position(int drv)
 353 ///{
 354 ///     return drec->get_tape_position();
 355 ///}
 356
 357 ///const _TCHAR* VM::get_tape_message(int drv)
 358 ///{
 359 ///     return drec->get_message();
 360 ///}
 361
 362 ///void VM::push_play(int drv)
 363 ///{
 364 ///     drec->set_ff_rew(0);
 365 ///     drec->set_remote(true);
 366 ///}
 367
 368 ///void VM::push_stop(int drv)
 369 ///{
 370 ///     drec->set_remote(false);
 371 ///}
 372
 373 ///void VM::push_fast_forward(int drv)
 374 ///{
 375 ///     drec->set_ff_rew(1);
 376 ///     drec->set_remote(true);
 377 ///}
 378
 379 ///void VM::push_fast_rewind(int drv)
 380 ///{
 381 ///     drec->set_ff_rew(-1);
 382 ///     drec->set_remote(true);
 383 ///}
 384
 385 bool VM::is_frame_skippable()
 386 {
 387         return event->is_frame_skippable();
 388 }
 389
 390 void VM::update_config()
 391 {
 392         for(DEVICE* device = first_device; device; device = device->next_device) {
 393                 device->update_config();
 394         }
 395 }
 396
 397 #define STATE_VERSION   1
 398
 399 bool VM::process_state(FILEIO* state_fio, bool loading)
 400 {
 401         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 402                 return false;
 403         }
 404         for(DEVICE* device = first_device; device; device = device->next_device) {
 405                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 406                 // const char *name = typeid(*device).name();
 407                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 408                 const char *name = device->get_device_name();
 409                 int len = strlen(name);
 410
 411                 if(!state_fio->StateCheckInt32(len)) {
 412                         if(loading) {
 413                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 414                         }
 415                         return false;
 416                 }
 417                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 418                         if(loading) {
 419                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 420                         }
 421                         return false;
 422                 }
 423                 if(!device->process_state(state_fio, loading)) {
 424                         if(loading) {
 425                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 426                         }
 427                         return false;
 428                 }
 429         }
 430         // Machine specified.
 431         return true;
 432 }
 433