source/src/vm/familybasic/familybasic.cpp

   1 /*
   2         Nintendo Family BASIC Emulator 'eFamilyBASIC'
   3
   4         Origin : nester
   5         Author : Takeda.Toshiya
   6         Date   : 2010.08.11-
   7
   8         [ virtual machine ]
   9 */
  10
  11 #include "familybasic.h"
  12 #include "../../emu.h"
  13 #include "../device.h"
  14 #include "../event.h"
  15
  16 #include "../datarec.h"
  17 #include "../m6502.h"
  18 #include "../noise.h"
  19 #include "../ym2413.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "memory.h"
  26 #include "apu.h"
  27 #include "ppu.h"
  28
  29 // ----------------------------------------------------------------------------
  30 // initialize
  31 // ----------------------------------------------------------------------------
  32
  33 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  34 {
  35         // check configs
  36 //      boot_mode = config.boot_mode;
  37         boot_mode = -1;
  38
  39         // create devices
  40         first_device = last_device = NULL;
  41         dummy = new DEVICE(this, emu);  // must be 1st device
  42         event = new EVENT(this, emu);   // must be 2nd device
  43
  44         drec = new DATAREC(this, emu);
  45         drec->set_context_noise_play(new NOISE(this, emu));
  46         drec->set_context_noise_stop(new NOISE(this, emu));
  47         drec->set_context_noise_fast(new NOISE(this, emu));
  48 //      cpu = new M6502(this, emu);
  49         opll = new YM2413(this, emu);
  50
  51         memory = new MEMORY(this, emu);
  52         apu = new APU(this, emu);
  53         ppu = new PPU(this, emu);
  54         cpu = new N2A03(this, emu); // cpu shoud be reset after other device
  55
  56         dummy->set_device_name(_T("1st Dummy"));
  57
  58         // set contexts
  59         event->set_context_cpu(cpu);
  60         event->set_context_sound(apu);
  61         event->set_context_sound(drec);
  62         event->set_context_sound(opll);
  63         event->set_context_sound(drec->get_context_noise_play());
  64         event->set_context_sound(drec->get_context_noise_stop());
  65         event->set_context_sound(drec->get_context_noise_fast());
  66
  67         memory->set_context_cpu(cpu);
  68         memory->set_context_apu(apu);
  69         memory->set_context_ppu(ppu);
  70         memory->set_context_drec(drec);
  71         memory->set_context_opll(opll);
  72         memory->set_spr_ram_ptr(ppu->get_spr_ram());
  73         apu->set_context_cpu(cpu);
  74         apu->set_context_memory(memory);
  75         ppu->set_context_cpu(cpu);
  76         ppu->set_context_memory(memory);
  77
  78         // cpu bus
  79         cpu->set_context_mem(memory);
  80         cpu->set_context_intr(dummy);
  81 #ifdef USE_DEBUGGER
  82         cpu->set_context_debugger(new DEBUGGER(this, emu));
  83 #endif
  84
  85         // initialize all devices
  86 #if defined(__GIT_REPO_VERSION)
  87         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
  88 #endif
  89         for(DEVICE* device = first_device; device; device = device->next_device) {
  90                 device->initialize();
  91         }
  92 }
  93
  94 VM::~VM()
  95 {
  96         // delete all devices
  97         for(DEVICE* device = first_device; device;) {
  98                 DEVICE *next_device = device->next_device;
  99                 device->release();
 100                 delete device;
 101                 device = next_device;
 102         }
 103 }
 104
 105 DEVICE* VM::get_device(int id)
 106 {
 107         for(DEVICE* device = first_device; device; device = device->next_device) {
 108                 if(device->this_device_id == id) {
 109                         return device;
 110                 }
 111         }
 112         return NULL;
 113 }
 114
 115 // ----------------------------------------------------------------------------
 116 // drive virtual machine
 117 // ----------------------------------------------------------------------------
 118
 119 void VM::reset()
 120 {
 121         // load basic rom
 122         if(boot_mode != config.boot_mode) {
 123                 if(boot_mode != -1) {
 124                         memory->save_backup();
 125                 }
 126                 if(config.boot_mode == 0) {
 127                         memory->load_rom_image(_T("BASIC_V2.NES"));
 128                         ppu->load_rom_image(_T("BASIC_V2.NES"));
 129                 } else if(config.boot_mode == 1) {
 130                         memory->load_rom_image(_T("BASIC_V3.NES"));
 131                         ppu->load_rom_image(_T("BASIC_V3.NES"));
 132                 } else if(config.boot_mode == 2) {
 133                         memory->load_rom_image(_T("PLAYBOX_BASIC.NES"));
 134                         ppu->load_rom_image(_T("PLAYBOX_BASIC.NES"));
 135                 } else if(config.boot_mode == 3) {
 136                         memory->load_rom_image(_T("VRC7_BASIC_V2.NES"));
 137                         ppu->load_rom_image(_T("VRC7_BASIC_V2.NES"));
 138                 } else if(config.boot_mode == 4) {
 139                         memory->load_rom_image(_T("VRC7_BASIC_V3.NES"));
 140                         ppu->load_rom_image(_T("VRC7_BASIC_V3.NES"));
 141                 } else if(config.boot_mode == 5) {
 142                         memory->load_rom_image(_T("MMC5_BASIC_V3.NES"));
 143                         ppu->load_rom_image(_T("MMC5_BASIC_V3.NES"));
 144                 }
 145                 boot_mode = config.boot_mode;
 146         }
 147
 148         // reset all devices
 149         for(DEVICE* device = first_device; device; device = device->next_device) {
 150                 device->reset();
 151         }
 152 }
 153
 154 void VM::run()
 155 {
 156         event->drive();
 157 }
 158
 159 // ----------------------------------------------------------------------------
 160 // debugger
 161 // ----------------------------------------------------------------------------
 162
 163 #ifdef USE_DEBUGGER
 164 DEVICE *VM::get_cpu(int index)
 165 {
 166         if(index == 0) {
 167                 return cpu;
 168         }
 169         return NULL;
 170 }
 171 #endif
 172
 173 // ----------------------------------------------------------------------------
 174 // draw screen
 175 // ----------------------------------------------------------------------------
 176
 177 void VM::draw_screen()
 178 {
 179         ppu->draw_screen();
 180 }
 181
 182 // ----------------------------------------------------------------------------
 183 // soud manager
 184 // ----------------------------------------------------------------------------
 185
 186 void VM::initialize_sound(int rate, int samples)
 187 {
 188         // init sound manager
 189         event->initialize_sound(rate, samples);
 190
 191         // init sound gen
 192         apu->initialize_sound(rate, samples);
 193         opll->initialize_sound(rate, 3579545, samples);
 194 }
 195
 196 uint16_t* VM::create_sound(int* extra_frames)
 197 {
 198         return event->create_sound(extra_frames);
 199 }
 200
 201 int VM::get_sound_buffer_ptr()
 202 {
 203         return event->get_sound_buffer_ptr();
 204 }
 205
 206 #ifdef USE_SOUND_VOLUME
 207 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 208 {
 209         if(ch == 0) {
 210                 apu->set_volume(0, decibel_l, decibel_r);
 211         } else if(ch == 1) {
 212                 opll->set_volume(0, decibel_l, decibel_r);
 213         } else if(ch == 2) {
 214                 drec->set_volume(0, decibel_l, decibel_r);
 215         } else if(ch == 3) {
 216                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 217                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 218                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 219         }
 220 }
 221 #endif
 222
 223 // ----------------------------------------------------------------------------
 224 // user interface
 225 // ----------------------------------------------------------------------------
 226
 227 void VM::play_tape(int drv, const _TCHAR* file_path)
 228 {
 229         drec->play_tape(file_path);
 230 //      drec->set_remote(true);
 231 }
 232
 233 void VM::rec_tape(int drv, const _TCHAR* file_path)
 234 {
 235         drec->rec_tape(file_path);
 236 //      drec->set_remote(true);
 237 }
 238
 239 void VM::close_tape(int drv)
 240 {
 241         emu->lock_vm();
 242         drec->close_tape();
 243         emu->unlock_vm();
 244 //      drec->set_remote(false);
 245 }
 246
 247 bool VM::is_tape_inserted(int drv)
 248 {
 249         return drec->is_tape_inserted();
 250 }
 251
 252 bool VM::is_tape_playing(int drv)
 253 {
 254         return drec->is_tape_playing();
 255 }
 256
 257 bool VM::is_tape_recording(int drv)
 258 {
 259         return drec->is_tape_recording();
 260 }
 261
 262 int VM::get_tape_position(int drv)
 263 {
 264         return drec->get_tape_position();
 265 }
 266
 267 const _TCHAR* VM::get_tape_message(int drv)
 268 {
 269         return drec->get_message();
 270 }
 271
 272 void VM::push_play(int drv)
 273 {
 274         drec->set_ff_rew(0);
 275         drec->set_remote(true);
 276 }
 277
 278 void VM::push_stop(int drv)
 279 {
 280         drec->set_remote(false);
 281 }
 282
 283 void VM::push_fast_forward(int drv)
 284 {
 285         drec->set_ff_rew(1);
 286         drec->set_remote(true);
 287 }
 288
 289 void VM::push_fast_rewind(int drv)
 290 {
 291         drec->set_ff_rew(-1);
 292         drec->set_remote(true);
 293 }
 294
 295 bool VM::is_frame_skippable()
 296 {
 297         return event->is_frame_skippable();
 298 }
 299
 300 void VM::update_config()
 301 {
 302         if(boot_mode != config.boot_mode) {
 303                 // boot mode is changed !!!
 304 //              boot_mode = config.boot_mode;
 305                 reset();
 306         } else {
 307                 for(DEVICE* device = first_device; device; device = device->next_device) {
 308                         device->update_config();
 309                 }
 310         }
 311 }
 312
 313 #define STATE_VERSION   6
 314
 315 bool VM::process_state(FILEIO* state_fio, bool loading)
 316 {
 317         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 318                 return false;
 319         }
 320         for(DEVICE* device = first_device; device; device = device->next_device) {
 321                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 322                 // const char *name = typeid(*device).name();
 323                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 324                 const char *name = device->get_device_name();
 325                 int len = strlen(name);
 326
 327                 if(!state_fio->StateCheckInt32(len)) {
 328                         if(loading) {
 329                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 330                         }
 331                         return false;
 332                 }
 333                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 334                         if(loading) {
 335                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 336                         }
 337                         return false;
 338                 }
 339                 if(!device->process_state(state_fio, loading)) {
 340                         if(loading) {
 341                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 342                         }
 343                         return false;
 344                 }
 345         }
 346         // Machine specified.
 347         state_fio->StateInt32(boot_mode);
 348         if(loading) {
 349                 update_config();
 350         }
 351         return true;
 352 }
 353