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 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  40 {
  41         // create devices
  42         first_device = last_device = NULL;
  43         dummy = new DEVICE(this, emu);  // must be 1st device
  44         event = new EVENT(this, emu);   // must be 2nd device
  45         dummy->set_device_name(_T("1st Dummy"));
  46 ///     drec = new DATAREC(this, emu);
  47 ///     drec->set_context_noise_play(new NOISE(this, emu));
  48 ///     drec->set_context_noise_stop(new NOISE(this, emu));
  49 ///     drec->set_context_noise_fast(new NOISE(this, emu));
  50 ///     sio = new I8251(this, emu);
  51         pio_k = new I8255(this, emu);
  52         pio_k->set_device_name(_T("8255 PIO (Keyboard)"));
  53         pio_f = new I8255(this, emu);
  54         pio_f->set_device_name(_T("8255 PIO (Floppy I/F)"));
  55         io = new IO(this, emu);
  56         psg = new SN76489AN(this, emu);
  57         fm = new YM2413(this, emu);
  58         vdp = new _315_5124(this, emu);
  59 ///     fdc = new UPD765A(this, emu);
  60 ///     fdc->set_context_noise_seek(new NOISE(this, emu));
  61 ///     fdc->set_context_noise_head_down(new NOISE(this, emu));
  62 //      fdc->set_context_noise_head_up(new NOISE(this, emu));
  63         cpu = new Z80(this, emu);
  64
  65         key = new KEYBOARD(this, emu);
  66         memory = new MEMORY(this, emu);
  67         system = new SYSTEM(this, emu);
  68
  69         // set contexts
  70         event->set_context_cpu(cpu);
  71         event->set_context_sound(psg);
  72         event->set_context_sound(fm);
  73 ///     event->set_context_sound(fdc->get_context_noise_seek());
  74 ///     event->set_context_sound(fdc->get_context_noise_head_down());
  75 ///     event->set_context_sound(fdc->get_context_noise_head_up());
  76 ///     event->set_context_sound(drec->get_context_noise_play());
  77 ///     event->set_context_sound(drec->get_context_noise_stop());
  78 ///     event->set_context_sound(drec->get_context_noise_fast());
  79
  80
  81 ///     drec->set_context_ear(pio_k, SIG_I8255_PORT_B, 0x80);
  82         pio_k->set_context_port_c(key, SIG_KEYBOARD_COLUMN, 0x07, 0);
  83 ///     pio_k->set_context_port_c(drec, SIG_DATAREC_REMOTE, 0x08, 0);
  84 ///     pio_k->set_context_port_c(drec, SIG_DATAREC_MIC, 0x10, 0);
  85 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_MOTOR_NEG, 2, 0);
  86 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_TC, 4, 0);
  87 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_RESET, 8, 0);
  88         pio_f->set_context_port_c(memory, SIG_MEMORY_SEL, 0x40, 0);
  89         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
  90 ///     fdc->set_context_irq(pio_f, SIG_I8255_PORT_A, 1);
  91 ///     fdc->set_context_index(pio_f, SIG_I8255_PORT_A, 4);
  92
  93         key->set_context_cpu(cpu);
  94         key->set_context_pio(pio_k);
  95         system->set_context_key(key);
  96         vdp->set_context_key(key);
  97         vdp->set_context_psg(psg);
  98 ///     vdp->set_context_cpu(cpu);
  99
 100         // cpu bus
 101         cpu->set_context_mem(memory);
 102         cpu->set_context_io(io);
 103         cpu->set_context_intr(system);
 104 #ifdef USE_DEBUGGER
 105         cpu->set_context_debugger(new DEBUGGER(this, emu));
 106 #endif
 107
 108         // i/o bus
 109         io->set_iomap_single_r(0x00, system);           // GG  START
 110         io->set_iomap_single_w(0x80, system);           // COL TENKEY
 111         io->set_iomap_single_w(0xc0, system);           // COL JOYPAD
 112         io->set_iomap_range_rw(0xfc, 0xfe, system);     // COL JOYPAD
 113         io->set_iomap_range_rw(0xff, 0xff, psg);        // COL PSG
 114         io->set_iomap_range_rw(0x7e, 0x7f, vdp);        // SG  VDP
 115         io->set_iomap_range_rw(0xbe, 0xbf, vdp);        // SG  VDP
 116         io->set_iomap_range_rw(0xdc, 0xdf, pio_k);      // SG  KEY
 117 ///     io->set_iomap_range_rw(0xe0, 0xe3, fdc);        // SG  FDD
 118 ///     io->set_iomap_range_rw(0xe4, 0xe7, pio_f);      // SG  FDD
 119 ///     io->set_iomap_range_rw(0xe8, 0xe9, sio);        // SG  SERIAL
 120         io->set_iomap_range_rw(0xf0, 0xf2, fm);         // MS  FM
 121
 122         // initialize all devices
 123         for(DEVICE* device = first_device; device; device = device->next_device) {
 124                 device->initialize();
 125         }
 126
 127         // BIOS
 128 ///     memory->bios();
 129         memory->open_cart(create_local_path(_T("SMS.ROM")));
 130 ///     for(int i = 0; i < 4; i++) {
 131 ///             fdc->set_drive_type(i, DRIVE_TYPE_2D);
 132 ///     }
 133 }
 134
 135 VM::~VM()
 136 {
 137         // delete all devices
 138         for(DEVICE* device = first_device; device;) {
 139                 DEVICE *next_device = device->next_device;
 140                 device->release();
 141                 delete device;
 142                 device = next_device;
 143         }
 144 }
 145
 146 DEVICE* VM::get_device(int id)
 147 {
 148         for(DEVICE* device = first_device; device; device = device->next_device) {
 149                 if(device->this_device_id == id) {
 150                         return device;
 151                 }
 152         }
 153         return NULL;
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // drive virtual machine
 158 // ----------------------------------------------------------------------------
 159
 160 void VM::reset()
 161 {
 162         // reset all devices
 163         for(DEVICE* device = first_device; device; device = device->next_device) {
 164                 device->reset();
 165         }
 166 }
 167
 168 void VM::run()
 169 {
 170         event->drive();
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // debugger
 175 // ----------------------------------------------------------------------------
 176
 177 #ifdef USE_DEBUGGER
 178 DEVICE *VM::get_cpu(int index)
 179 {
 180         if(index == 0) {
 181                 return cpu;
 182         }
 183         return NULL;
 184 }
 185 #endif
 186
 187 // ----------------------------------------------------------------------------
 188 // draw screen
 189 // ----------------------------------------------------------------------------
 190
 191 void VM::draw_screen()
 192 {
 193         vdp->draw_screen();
 194 }
 195
 196 // ----------------------------------------------------------------------------
 197 // soud manager
 198 // ----------------------------------------------------------------------------
 199
 200 void VM::initialize_sound(int rate, int samples)
 201 {
 202         // init sound manager
 203         event->initialize_sound(rate, samples);
 204
 205         // init sound gen
 206         psg->initialize_sound(rate, 3579545, 4000);
 207         fm->initialize_sound(rate, 3579545, samples);
 208 }
 209
 210 uint16_t* VM::create_sound(int* extra_frames)
 211 {
 212         return event->create_sound(extra_frames);
 213 }
 214
 215 int VM::get_sound_buffer_ptr()
 216 {
 217         return event->get_sound_buffer_ptr();
 218 }
 219
 220 #ifdef USE_SOUND_VOLUME
 221 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 222 {
 223         if(ch == 0) {
 224                 psg->set_volume(0, decibel_l, decibel_r);
 225         } else if(ch == 1) {
 226                 fm->set_volume(0, decibel_l, decibel_r);
 227 ///     } else if(ch == 2) {
 228 ///             fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 229 ///             fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 230 ///             fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 231 ///     } else if(ch == 3) {
 232 ///             drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 233 ///             drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 234 ///             drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 235         }
 236 }
 237 #endif
 238
 239 // ----------------------------------------------------------------------------
 240 // user interface
 241 // ----------------------------------------------------------------------------
 242
 243 void VM::open_cart(int drv, const _TCHAR* file_path)
 244 {
 245         if(drv == 0) {
 246                 memory->open_cart(file_path);
 247                 if (check_file_extension(file_path, _T(".col"))) {
 248                         vdp->set_context_irq(cpu, SIG_CPU_NMI, 1);
 249                         vdp->set_console(0x00);
 250                         memory->bios();
 251                 } else {
 252                         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
 253                         if (check_file_extension(file_path, _T(".gg"))) {
 254                                 vdp->set_console(0x40);
 255                         } else {
 256                                 vdp->set_console(0x20);
 257                         }
 258                 }
 259                 reset();
 260         }
 261 }
 262
 263 void VM::close_cart(int drv)
 264 {
 265         if(drv == 0) {
 266                 memory->close_cart();
 267                 reset();
 268         }
 269 }
 270
 271 bool VM::is_cart_inserted(int drv)
 272 {
 273         if(drv == 0) {
 274                 return memory->is_cart_inserted();
 275         } else {
 276                 return false;
 277         }
 278 }
 279
 280 ///void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 281 ///{
 282 ///     fdc->open_disk(drv, file_path, bank);
 283 ///}
 284
 285 ///void VM::close_floppy_disk(int drv)
 286 ///{
 287 ///     fdc->close_disk(drv);
 288 ///}
 289
 290 ///bool VM::is_floppy_disk_inserted(int drv)
 291 ///{
 292 ///     return fdc->is_disk_inserted(drv);
 293 ///}
 294
 295 ///void VM::is_floppy_disk_protected(int drv, bool value)
 296 ///{
 297 ///     fdc->is_disk_protected(drv, value);
 298 ///}
 299
 300 ///bool VM::is_floppy_disk_protected(int drv)
 301 ///{
 302 ///     return fdc->is_disk_protected(drv);
 303 ///}
 304
 305 ///uint32_t VM::is_floppy_disk_accessed()
 306 ///{
 307 ///     return fdc->read_signal(0);
 308 ///}
 309
 310 ///void VM::play_tape(int drv, const _TCHAR* file_path)
 311 ///{
 312 ///     drec->play_tape(file_path);
 313 ///     drec->set_remote(true);
 314 ///}
 315
 316 ///void VM::rec_tape(int drv, const _TCHAR* file_path)
 317 ///{
 318 ///     drec->rec_tape(file_path);
 319 ///     drec->set_remote(true);
 320 ///}
 321
 322 ///void VM::close_tape(int drv)
 323 ///{
 324 ///     emu->lock_vm();
 325 ///     drec->close_tape();
 326 ///     emu->unlock_vm();
 327 ///     drec->set_remote(false);
 328 ///}
 329
 330 ///bool VM::is_tape_inserted(int drv)
 331 ///{
 332 ///     return drec->is_tape_inserted();
 333 ///}
 334
 335 ///bool VM::is_tape_playing(int drv)
 336 ///{
 337 ///     return drec->is_tape_playing();
 338 ///}
 339
 340 ///bool VM::is_tape_recording(int drv)
 341 ///{
 342 ///     return drec->is_tape_recording();
 343 ///}
 344
 345 ///int VM::get_tape_position(int drv)
 346 ///{
 347 ///     return drec->get_tape_position();
 348 ///}
 349
 350 ///const _TCHAR* VM::get_tape_message(int drv)
 351 ///{
 352 ///     return drec->get_message();
 353 ///}
 354
 355 ///void VM::push_play(int drv)
 356 ///{
 357 ///     drec->set_ff_rew(0);
 358 ///     drec->set_remote(true);
 359 ///}
 360
 361 ///void VM::push_stop(int drv)
 362 ///{
 363 ///     drec->set_remote(false);
 364 ///}
 365
 366 ///void VM::push_fast_forward(int drv)
 367 ///{
 368 ///     drec->set_ff_rew(1);
 369 ///     drec->set_remote(true);
 370 ///}
 371
 372 ///void VM::push_fast_rewind(int drv)
 373 ///{
 374 ///     drec->set_ff_rew(-1);
 375 ///     drec->set_remote(true);
 376 ///}
 377
 378 bool VM::is_frame_skippable()
 379 {
 380         return event->is_frame_skippable();
 381 }
 382
 383 void VM::update_config()
 384 {
 385         for(DEVICE* device = first_device; device; device = device->next_device) {
 386                 device->update_config();
 387         }
 388 }