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) : emu(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         for(DEVICE* device = first_device; device; device = device->next_device) {
  87                 device->initialize();
  88         }
  89 }
  90
  91 VM::~VM()
  92 {
  93         // delete all devices
  94         for(DEVICE* device = first_device; device;) {
  95                 DEVICE *next_device = device->next_device;
  96                 device->release();
  97                 delete device;
  98                 device = next_device;
  99         }
 100 }
 101
 102 DEVICE* VM::get_device(int id)
 103 {
 104         for(DEVICE* device = first_device; device; device = device->next_device) {
 105                 if(device->this_device_id == id) {
 106                         return device;
 107                 }
 108         }
 109         return NULL;
 110 }
 111
 112 // ----------------------------------------------------------------------------
 113 // drive virtual machine
 114 // ----------------------------------------------------------------------------
 115
 116 void VM::reset()
 117 {
 118         // load basic rom
 119         if(boot_mode != config.boot_mode) {
 120                 if(boot_mode != -1) {
 121                         memory->save_backup();
 122                 }
 123                 if(config.boot_mode == 0) {
 124                         memory->load_rom_image(_T("BASIC_V2.NES"));
 125                         ppu->load_rom_image(_T("BASIC_V2.NES"));
 126                 } else if(config.boot_mode == 1) {
 127                         memory->load_rom_image(_T("BASIC_V3.NES"));
 128                         ppu->load_rom_image(_T("BASIC_V3.NES"));
 129                 } else if(config.boot_mode == 2) {
 130                         memory->load_rom_image(_T("PLAYBOX_BASIC.NES"));
 131                         ppu->load_rom_image(_T("PLAYBOX_BASIC.NES"));
 132                 } else if(config.boot_mode == 3) {
 133                         memory->load_rom_image(_T("VRC7_BASIC_V2.NES"));
 134                         ppu->load_rom_image(_T("VRC7_BASIC_V2.NES"));
 135                 } else if(config.boot_mode == 4) {
 136                         memory->load_rom_image(_T("VRC7_BASIC_V3.NES"));
 137                         ppu->load_rom_image(_T("VRC7_BASIC_V3.NES"));
 138                 } else if(config.boot_mode == 5) {
 139                         memory->load_rom_image(_T("MMC5_BASIC_V3.NES"));
 140                         ppu->load_rom_image(_T("MMC5_BASIC_V3.NES"));
 141                 }
 142                 boot_mode = config.boot_mode;
 143         }
 144
 145         // reset all devices
 146         for(DEVICE* device = first_device; device; device = device->next_device) {
 147                 device->reset();
 148         }
 149 }
 150
 151 void VM::run()
 152 {
 153         event->drive();
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // debugger
 158 // ----------------------------------------------------------------------------
 159
 160 #ifdef USE_DEBUGGER
 161 DEVICE *VM::get_cpu(int index)
 162 {
 163         if(index == 0) {
 164                 return cpu;
 165         }
 166         return NULL;
 167 }
 168 #endif
 169
 170 // ----------------------------------------------------------------------------
 171 // draw screen
 172 // ----------------------------------------------------------------------------
 173
 174 void VM::draw_screen()
 175 {
 176         ppu->draw_screen();
 177 }
 178
 179 // ----------------------------------------------------------------------------
 180 // soud manager
 181 // ----------------------------------------------------------------------------
 182
 183 void VM::initialize_sound(int rate, int samples)
 184 {
 185         // init sound manager
 186         event->initialize_sound(rate, samples);
 187
 188         // init sound gen
 189         apu->initialize_sound(rate, samples);
 190         opll->initialize_sound(rate, 3579545, samples);
 191 }
 192
 193 uint16_t* VM::create_sound(int* extra_frames)
 194 {
 195         return event->create_sound(extra_frames);
 196 }
 197
 198 int VM::get_sound_buffer_ptr()
 199 {
 200         return event->get_sound_buffer_ptr();
 201 }
 202
 203 #ifdef USE_SOUND_VOLUME
 204 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 205 {
 206         if(ch == 0) {
 207                 apu->set_volume(0, decibel_l, decibel_r);
 208         } else if(ch == 1) {
 209                 opll->set_volume(0, decibel_l, decibel_r);
 210         } else if(ch == 2) {
 211                 drec->set_volume(0, decibel_l, decibel_r);
 212         } else if(ch == 3) {
 213                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 214                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 215                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 216         }
 217 }
 218 #endif
 219
 220 // ----------------------------------------------------------------------------
 221 // user interface
 222 // ----------------------------------------------------------------------------
 223
 224 void VM::play_tape(int drv, const _TCHAR* file_path)
 225 {
 226         drec->play_tape(file_path);
 227 //      drec->set_remote(true);
 228 }
 229
 230 void VM::rec_tape(int drv, const _TCHAR* file_path)
 231 {
 232         drec->rec_tape(file_path);
 233 //      drec->set_remote(true);
 234 }
 235
 236 void VM::close_tape(int drv)
 237 {
 238         emu->lock_vm();
 239         drec->close_tape();
 240         emu->unlock_vm();
 241 //      drec->set_remote(false);
 242 }
 243
 244 bool VM::is_tape_inserted(int drv)
 245 {
 246         return drec->is_tape_inserted();
 247 }
 248
 249 bool VM::is_tape_playing(int drv)
 250 {
 251         return drec->is_tape_playing();
 252 }
 253
 254 bool VM::is_tape_recording(int drv)
 255 {
 256         return drec->is_tape_recording();
 257 }
 258
 259 int VM::get_tape_position(int drv)
 260 {
 261         return drec->get_tape_position();
 262 }
 263
 264 const _TCHAR* VM::get_tape_message(int drv)
 265 {
 266         return drec->get_message();
 267 }
 268
 269 void VM::push_play(int drv)
 270 {
 271         drec->set_ff_rew(0);
 272         drec->set_remote(true);
 273 }
 274
 275 void VM::push_stop(int drv)
 276 {
 277         drec->set_remote(false);
 278 }
 279
 280 void VM::push_fast_forward(int drv)
 281 {
 282         drec->set_ff_rew(1);
 283         drec->set_remote(true);
 284 }
 285
 286 void VM::push_fast_rewind(int drv)
 287 {
 288         drec->set_ff_rew(-1);
 289         drec->set_remote(true);
 290 }
 291
 292 bool VM::is_frame_skippable()
 293 {
 294         return event->is_frame_skippable();
 295 }
 296
 297 void VM::update_config()
 298 {
 299         if(boot_mode != config.boot_mode) {
 300                 // boot mode is changed !!!
 301 //              boot_mode = config.boot_mode;
 302                 reset();
 303         } else {
 304                 for(DEVICE* device = first_device; device; device = device->next_device) {
 305                         device->update_config();
 306                 }
 307         }
 308 }
 309
 310 #define STATE_VERSION   5
 311
 312 void VM::save_state(FILEIO* state_fio)
 313 {
 314         state_fio->FputUint32(STATE_VERSION);
 315
 316         for(DEVICE* device = first_device; device; device = device->next_device) {
 317                 device->save_state(state_fio);
 318         }
 319         state_fio->FputInt32(boot_mode);
 320 }
 321
 322 bool VM::load_state(FILEIO* state_fio)
 323 {
 324         if(state_fio->FgetUint32() != STATE_VERSION) {
 325                 return false;
 326         }
 327         for(DEVICE* device = first_device; device; device = device->next_device) {
 328                 if(!device->load_state(state_fio)) {
 329                         return false;
 330                 }
 331         }
 332         boot_mode = state_fio->FgetInt32();
 333         return true;
 334 }
 335