source/src/vm/pc8801/pc8801.cpp

   1 /*
   2         NEC PC-8801MA Emulator 'ePC-8801MA'
   3         NEC PC-8001mkIISR Emulator 'ePC-8001mkIISR'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2012.02.16-
   7
   8         [ virtual machine ]
   9 */
  10
  11 #include "pc8801.h"
  12 #include "../../emu.h"
  13 #include "../device.h"
  14 #include "../event.h"
  15
  16 #include "../i8251.h"
  17 #include "../i8255.h"
  18 #include "../pcm1bit.h"
  19 #include "../upd1990a.h"
  20 #include "../ym2203.h"
  21 #include "../z80.h"
  22
  23 #include "../disk.h"
  24 #include "../pc80s31k.h"
  25 #include "../upd765a.h"
  26
  27 #ifdef USE_DEBUGGER
  28 #include "../debugger.h"
  29 #endif
  30
  31 #ifdef SUPPORT_PC88_PCG8100
  32 #include "../i8253.h"
  33 #endif
  34
  35 #include "pc88.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // initialize
  39 // ----------------------------------------------------------------------------
  40
  41 VM::VM(EMU* parent_emu) : emu(parent_emu)
  42 {
  43         // check configs
  44         boot_mode = config.boot_mode;
  45
  46         // create devices
  47         first_device = last_device = NULL;
  48         dummy = new DEVICE(this, emu);  // must be 1st device
  49
  50         pc88event = new EVENT(this, emu);
  51 //      pc88event->set_frames_per_sec(60);
  52 //      pc88event->set_lines_per_frame(260);
  53
  54         pc88 = new PC88(this, emu);
  55 //      pc88->set_context_event_manager(pc88event);
  56         pc88sio = new I8251(this, emu);
  57 //      pc88sio->set_context_event_manager(pc88event);
  58         pc88pio = new I8255(this, emu);
  59 //      pc88pio->set_context_event_manager(pc88event);
  60         pc88pcm = new PCM1BIT(this, emu);
  61 //      pc88pcm->set_context_event_manager(pc88event);
  62         pc88rtc = new UPD1990A(this, emu);
  63 //      pc88rtc->set_context_event_manager(pc88event);
  64         pc88opn = new YM2203(this, emu);
  65 #ifdef SUPPORT_PC88_OPNA
  66         pc88opn->is_ym2608 = (config.sound_device_type == 0);
  67 #endif
  68 //      pc88opn->set_context_event_manager(pc88event);
  69         pc88cpu = new Z80(this, emu);
  70 //      pc88cpu->set_context_event_manager(pc88event);
  71         dummycpu = new DEVICE(this, emu);
  72
  73         pc88sub = new PC80S31K(this, emu);
  74 //      pc88sub->set_context_event_manager(pc88event);
  75         pc88pio_sub = new I8255(this, emu);
  76 //      pc88pio_sub->set_context_event_manager(pc88event);
  77         pc88fdc_sub = new UPD765A(this, emu);
  78 //      pc88fdc_sub->set_context_event_manager(pc88event);
  79         pc88cpu_sub = new Z80(this, emu);
  80 //      pc88cpu_sub->set_context_event_manager(pc88event);
  81
  82 #ifdef SUPPORT_PC88_PCG8100
  83         pc88pit = new I8253(this, emu);
  84 //      pc88pit->set_context_event_manager(pc88event);
  85         pc88pcm0 = new PCM1BIT(this, emu);
  86 //      pc88pcm->set_context_event_manager(pc88event);
  87         pc88pcm1 = new PCM1BIT(this, emu);
  88 //      pc88pcm->set_context_event_manager(pc88event);
  89         pc88pcm2 = new PCM1BIT(this, emu);
  90 //      pc88pcm->set_context_event_manager(pc88event);
  91 #endif
  92
  93 #ifdef SUPPORT_PC88_HIGH_CLOCK
  94         pc88event->set_context_cpu(dummycpu, 7987248);
  95         pc88event->set_context_cpu(pc88cpu, (config.cpu_type != 0) ? 3993624 : 7987248);
  96 #else
  97         pc88event->set_context_cpu(dummycpu, 3993624);
  98         pc88event->set_context_cpu(pc88cpu, 3993624);
  99 #endif
 100         pc88event->set_context_cpu(pc88cpu_sub, 3993624);
 101         pc88event->set_context_sound(pc88opn);
 102         pc88event->set_context_sound(pc88pcm);
 103 #ifdef SUPPORT_PC88_PCG8100
 104         pc88event->set_context_sound(pc88pcm0);
 105         pc88event->set_context_sound(pc88pcm1);
 106         pc88event->set_context_sound(pc88pcm2);
 107 #endif
 108 #ifdef DATAREC_SOUND
 109         pc88event->set_context_sound(pc88);
 110 #endif
 111         pc88->set_context_cpu(pc88cpu);
 112         pc88->set_context_opn(pc88opn);
 113         pc88->set_context_pcm(pc88pcm);
 114         pc88->set_context_pio(pc88pio);
 115         pc88->set_context_rtc(pc88rtc);
 116         pc88->set_context_sio(pc88sio);
 117 #ifdef SUPPORT_PC88_PCG8100
 118         pc88->set_context_pcg_pit(pc88pit);
 119         pc88->set_context_pcg_pcm0(pc88pcm0);
 120         pc88->set_context_pcg_pcm1(pc88pcm1);
 121         pc88->set_context_pcg_pcm2(pc88pcm2);
 122 #endif
 123         pc88cpu->set_context_mem(pc88);
 124         pc88cpu->set_context_io(pc88);
 125         pc88cpu->set_context_intr(pc88);
 126 #ifdef USE_DEBUGGER
 127         pc88cpu->set_context_debugger(new DEBUGGER(this, emu));
 128 #endif
 129         pc88opn->set_context_irq(pc88, SIG_PC88_SOUND_IRQ, 1);
 130         pc88sio->set_context_rxrdy(pc88, SIG_PC88_USART_IRQ, 1);
 131         pc88sio->set_context_out(pc88, SIG_PC88_USART_OUT);
 132
 133         pc88sub->set_context_cpu(pc88cpu_sub);
 134         pc88sub->set_context_fdc(pc88fdc_sub);
 135         pc88sub->set_context_pio(pc88pio_sub);
 136         pc88pio->set_context_port_a(pc88pio_sub, SIG_I8255_PORT_B, 0xff, 0);
 137         pc88pio->set_context_port_b(pc88pio_sub, SIG_I8255_PORT_A, 0xff, 0);
 138         pc88pio->set_context_port_c(pc88pio_sub, SIG_I8255_PORT_C, 0x0f, 4);
 139         pc88pio->set_context_port_c(pc88pio_sub, SIG_I8255_PORT_C, 0xf0, -4);
 140         pc88pio->clear_ports_by_cmdreg = true;
 141         pc88pio_sub->set_context_port_a(pc88pio, SIG_I8255_PORT_B, 0xff, 0);
 142         pc88pio_sub->set_context_port_b(pc88pio, SIG_I8255_PORT_A, 0xff, 0);
 143         pc88pio_sub->set_context_port_c(pc88pio, SIG_I8255_PORT_C, 0x0f, 4);
 144         pc88pio_sub->set_context_port_c(pc88pio, SIG_I8255_PORT_C, 0xf0, -4);
 145         pc88pio_sub->clear_ports_by_cmdreg = true;
 146         pc88fdc_sub->set_context_irq(pc88cpu_sub, SIG_CPU_IRQ, 1);
 147         pc88cpu_sub->set_context_mem(pc88sub);
 148         pc88cpu_sub->set_context_io(pc88sub);
 149         pc88cpu_sub->set_context_intr(pc88sub);
 150 #ifdef USE_DEBUGGER
 151         pc88cpu_sub->set_context_debugger(new DEBUGGER(this, emu));
 152 #endif
 153
 154 #ifdef SUPPORT_PC88_PCG8100
 155         pc88pit->set_context_ch0(pc88pcm0, SIG_PCM1BIT_SIGNAL, 1);
 156         pc88pit->set_context_ch1(pc88pcm1, SIG_PCM1BIT_SIGNAL, 1);
 157         pc88pit->set_context_ch2(pc88pcm2, SIG_PCM1BIT_SIGNAL, 1);
 158         pc88pit->set_constant_clock(0, 3993624);
 159         pc88pit->set_constant_clock(1, 3993624);
 160         pc88pit->set_constant_clock(2, 3993624);
 161 #endif
 162
 163         // initialize all devices
 164         for(DEVICE* device = first_device; device; device = device->next_device) {
 165                 device->initialize();
 166         }
 167 }
 168
 169 VM::~VM()
 170 {
 171         // delete all devices
 172         for(DEVICE* device = first_device; device;) {
 173                 DEVICE *next_device = device->next_device;
 174                 device->release();
 175                 delete device;
 176                 device = next_device;
 177         }
 178 }
 179
 180 DEVICE* VM::get_device(int id)
 181 {
 182         for(DEVICE* device = first_device; device; device = device->next_device) {
 183                 if(device->this_device_id == id) {
 184                         return device;
 185                 }
 186         }
 187         return NULL;
 188 }
 189
 190 // ----------------------------------------------------------------------------
 191 // drive virtual machine
 192 // ----------------------------------------------------------------------------
 193
 194 void VM::reset()
 195 {
 196         // reset all devices
 197         for(DEVICE* device = first_device; device; device = device->next_device) {
 198                 device->reset();
 199         }
 200         for(DEVICE* device = first_device; device; device = device->next_device) {
 201                 device->reset();
 202         }
 203
 204         // initial device settings
 205         pc88opn->SetReg(0x29, 3); // for Misty Blue
 206         pc88pio->write_signal(SIG_I8255_PORT_C, 0, 0xff);
 207         pc88pio_sub->write_signal(SIG_I8255_PORT_C, 0, 0xff);
 208 }
 209
 210 void VM::run()
 211 {
 212         pc88event->drive();
 213 }
 214
 215 double VM::frame_rate()
 216 {
 217         return pc88event->frame_rate();
 218 }
 219
 220 // ----------------------------------------------------------------------------
 221 // debugger
 222 // ----------------------------------------------------------------------------
 223
 224 #ifdef USE_DEBUGGER
 225 DEVICE *VM::get_cpu(int index)
 226 {
 227         if(index == 0) {
 228                 return pc88cpu;
 229         } else if(index == 1) {
 230                 return pc88cpu_sub;
 231         }
 232         return NULL;
 233 }
 234 #endif
 235
 236 // ----------------------------------------------------------------------------
 237 // draw screen
 238 // ----------------------------------------------------------------------------
 239
 240 void VM::draw_screen()
 241 {
 242         pc88->draw_screen();
 243 }
 244
 245 int VM::access_lamp()
 246 {
 247         return pc88fdc_sub->read_signal(0);
 248 }
 249
 250 // ----------------------------------------------------------------------------
 251 // soud manager
 252 // ----------------------------------------------------------------------------
 253
 254 void VM::initialize_sound(int rate, int samples)
 255 {
 256         // init sound manager
 257         pc88event->initialize_sound(rate, samples);
 258
 259         // init sound gen
 260 #ifdef SUPPORT_PC88_OPNA
 261         if(pc88opn->is_ym2608) {
 262                 pc88opn->init(rate, 7987248, samples, 0, 0);
 263         } else
 264 #endif
 265         pc88opn->init(rate, 3993624, samples, 0, 0);
 266         pc88pcm->init(rate, 8000);
 267 #ifdef SUPPORT_PC88_PCG8100
 268         pc88pcm0->init(rate, 8000);
 269         pc88pcm1->init(rate, 8000);
 270         pc88pcm2->init(rate, 8000);
 271 #endif
 272 }
 273
 274 uint16* VM::create_sound(int* extra_frames)
 275 {
 276         return pc88event->create_sound(extra_frames);
 277 }
 278
 279 int VM::sound_buffer_ptr()
 280 {
 281         return pc88event->sound_buffer_ptr();
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // notify key
 286 // ----------------------------------------------------------------------------
 287
 288 void VM::key_down(int code, bool repeat)
 289 {
 290         pc88->key_down(code, repeat);
 291 }
 292
 293 void VM::key_up(int code)
 294 {
 295 }
 296
 297 // ----------------------------------------------------------------------------
 298 // user interface
 299 // ----------------------------------------------------------------------------
 300
 301 void VM::open_disk(int drv, _TCHAR* file_path, int bank)
 302 {
 303         pc88fdc_sub->open_disk(drv, file_path, bank);
 304 }
 305
 306 void VM::close_disk(int drv)
 307 {
 308         pc88fdc_sub->close_disk(drv);
 309 }
 310
 311 bool VM::disk_inserted(int drv)
 312 {
 313         return pc88fdc_sub->disk_inserted(drv);
 314 }
 315
 316 #if defined(USE_DISK_WRITE_PROTECT)
 317 void VM::write_protect_fd(int drv, bool flag)
 318 {
 319         pc88fdc_sub->write_protect_fd(drv, flag);
 320 }
 321
 322 bool VM::is_write_protect_fd(int drv)
 323 {
 324         return pc88fdc_sub->is_write_protect_fd(drv);
 325 }
 326 #endif
 327
 328 void VM::play_tape(_TCHAR* file_path)
 329 {
 330         pc88->play_tape(file_path);
 331 }
 332
 333 void VM::rec_tape(_TCHAR* file_path)
 334 {
 335         pc88->rec_tape(file_path);
 336 }
 337
 338 void VM::close_tape()
 339 {
 340         pc88->close_tape();
 341 }
 342
 343 bool VM::tape_inserted()
 344 {
 345         return pc88->tape_inserted();
 346 }
 347
 348 #if defined(USE_TAPE_PTR)
 349 int VM::get_tape_ptr()
 350 {
 351         return pc88->get_tape_ptr();
 352 }
 353 #endif
 354
 355 bool VM::now_skip()
 356 {
 357 //      return event->now_skip();
 358         return pc88->now_skip();
 359 }
 360
 361 void VM::update_config()
 362 {
 363         if(boot_mode != config.boot_mode) {
 364                 // boot mode is changed !!!
 365                 boot_mode = config.boot_mode;
 366                 reset();
 367         } else {
 368                 for(DEVICE* device = first_device; device; device = device->next_device) {
 369                         device->update_config();
 370                 }
 371         }
 372 #ifdef SUPPORT_PC88_HIGH_CLOCK
 373         pc88event->set_cpu_clock(pc88cpu, (config.cpu_type != 0) ? 3993624 : 7987248);
 374 #endif
 375
 376 }
 377
 378 #define STATE_VERSION   3
 379
 380 void VM::save_state(FILEIO* state_fio)
 381 {
 382         state_fio->FputUint32(STATE_VERSION);
 383
 384         for(DEVICE* device = first_device; device; device = device->next_device) {
 385                 device->save_state(state_fio);
 386         }
 387         state_fio->FputInt32(boot_mode);
 388 }
 389
 390 bool VM::load_state(FILEIO* state_fio)
 391 {
 392         if(state_fio->FgetUint32() != STATE_VERSION) {
 393                 return false;
 394         }
 395         for(DEVICE* device = first_device; device; device = device->next_device) {
 396                 if(!device->load_state(state_fio)) {
 397                         return false;
 398                 }
 399         }
 400         boot_mode = state_fio->FgetInt32();
 401         return true;
 402 }
 403