source/src/vm/n5200/n5200.cpp

   1 /*
   2         NEC N5200 Emulator 'eN5200'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2009.06.03-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "n5200.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../beep.h"
  16 #include "../i386_np21.h"
  17 //#include "../i386.h"
  18 #include "../i8237.h"
  19 #include "../i8251.h"
  20 #include "../i8253.h"
  21 #include "../i8255.h"
  22 #include "../i8259.h"
  23 #include "../io.h"
  24 #include "../noise.h"
  25 #include "../upd1990a.h"
  26 #include "../upd7220.h"
  27 #include "../upd765a.h"
  28
  29 #ifdef USE_DEBUGGER
  30 #include "../debugger.h"
  31 #endif
  32
  33 #include "display.h"
  34 #include "floppy.h"
  35 #include "keyboard.h"
  36 #include "./memory.h"
  37 #include "system.h"
  38
  39 using N5200::DISPLAY;
  40 using N5200::FLOPPY;
  41 using N5200::KEYBOARD;
  42 using N5200::MEMORY;
  43 using N5200::SYSTEM;
  44
  45 // ----------------------------------------------------------------------------
  46 // initialize
  47 // ----------------------------------------------------------------------------
  48
  49 VM::VM(EMU_TEMPLATE* parent_emu) : VM_TEMPLATE(parent_emu)
  50 {
  51         // create devices
  52         first_device = last_device = NULL;
  53         dummy = new DEVICE(this, emu);  // must be 1st device
  54         event = new EVENT(this, emu);   // must be 2nd device
  55         dummy->set_device_name(_T("1st Dummy"));
  56
  57         beep = new BEEP(this, emu);
  58 #ifdef USE_DEBUGGER
  59 //      beep->set_context_debugger(new DEBUGGER(this, emu));
  60 #endif
  61         cpu = new I386(this, emu);
  62         cpu->device_model = INTEL_80386;
  63         dma = new I8237(this, emu);
  64 #ifdef USE_DEBUGGER
  65         dma->set_context_debugger(new DEBUGGER(this, emu));
  66 #endif
  67         sio_r = new I8251(this, emu);   // for rs232c
  68         sio_r->set_device_name(_T("8251 SIO (RS-232C)"));
  69         sio_k = new I8251(this, emu);   // for keyboard
  70         sio_k->set_device_name(_T("8251 SIO (Keyboard)"));
  71         pit = new I8253(this, emu);
  72         pio_s = new I8255(this, emu);   // for system port
  73         pio_s->set_device_name(_T("8255 PIO (System)"));
  74         pio_p = new I8255(this, emu);   // for printer
  75         pio_p->set_device_name(_T("8255 PIO (Printer)"));
  76         pic = new I8259(this, emu);
  77         pic->num_chips = 2;
  78         io = new IO(this, emu);
  79         io->space = 0x10000;
  80         io->bus_width = 16;
  81         rtc = new UPD1990A(this, emu);
  82         gdc_c = new UPD7220(this, emu);
  83         gdc_c->set_device_name(_T("uPD7220 GDC (Character)"));
  84         gdc_g = new UPD7220(this, emu);
  85         gdc_g->set_device_name(_T("uPD7220 GDC (Graphics)"));
  86         fdc = new UPD765A(this, emu);
  87         fdc->set_context_noise_seek(new NOISE(this, emu));
  88         fdc->set_context_noise_head_down(new NOISE(this, emu));
  89         fdc->set_context_noise_head_up(new NOISE(this, emu));
  90 #ifdef USE_DEBUGGER
  91 //      fdc->set_context_debugger(new DEBUGGER(this, emu));
  92 #endif
  93
  94         display = new DISPLAY(this, emu);
  95         floppy = new FLOPPY(this, emu);
  96         keyboard = new KEYBOARD(this, emu);
  97         memory = new MEMORY(this, emu);
  98         system = new SYSTEM(this, emu);
  99
 100         // set contexts
 101         event->set_context_cpu(cpu);
 102         event->set_context_sound(beep);
 103         event->set_context_sound(fdc->get_context_noise_seek());
 104         event->set_context_sound(fdc->get_context_noise_head_down());
 105         event->set_context_sound(fdc->get_context_noise_head_up());
 106
 107 //???   sio_r->set_context_rxrdy(pic, SIG_I8259_CHIP0 | SIG_I8259_IR4, 1);
 108         sio_k->set_context_rxrdy(pic, SIG_I8259_CHIP0 | SIG_I8259_IR1, 1);
 109         sio_k->set_context_brk(keyboard, SIG_KEYBOARD_RST, 1);
 110         sio_k->set_context_out(keyboard, SIG_KEYBOARD_RECV);
 111         pit->set_context_ch0(pic, SIG_I8259_CHIP0 | SIG_I8259_IR0, 1);
 112         pit->set_constant_clock(0, 1996800);
 113         pit->set_constant_clock(1, 300);        // ???
 114         pit->set_constant_clock(2, 1996800);
 115         pio_s->set_context_port_c(beep, SIG_BEEP_MUTE, 8, 0);
 116         pic->set_context_cpu(cpu);
 117         rtc->set_context_dout(pio_s, SIG_I8255_PORT_B, 1);
 118         dma->set_context_cpu(cpu);
 119         dma->set_context_memory(memory);
 120         dma->set_context_ch2(fdc);      // 1MB
 121         dma->set_context_ch3(fdc);      // 640KB
 122         gdc_g->set_vram_ptr(memory->get_vram(), 0x20000);
 123         fdc->set_context_irq(pic, SIG_I8259_IR6, 1);
 124         fdc->set_context_drq(floppy, SIG_FLOPPY_DRQ, 1);
 125
 126         display->set_context_pic(pic);
 127         display->set_vram_ptr(memory->get_vram());
 128         display->set_tvram_ptr(memory->get_tvram());
 129         floppy->set_context_fdc(fdc);
 130         floppy->set_context_dma(dma);
 131         keyboard->set_context_sio(sio_k);
 132         system->set_context_dma(dma);
 133
 134         // cpu bus
 135         cpu->set_context_mem(memory);
 136         cpu->set_context_io(io);
 137         cpu->set_context_intr(pic);
 138 #ifdef USE_DEBUGGER
 139         cpu->set_context_debugger(new DEBUGGER(this, emu));
 140 #endif
 141
 142         // i/o bus
 143         io->set_iomap_alias_w(0x00, pic, 0);
 144         io->set_iomap_alias_w(0x02, pic, 1);
 145         io->set_iomap_alias_w(0x08, pic, 2);
 146         io->set_iomap_alias_w(0x0a, pic, 3);
 147         io->set_iomap_alias_w(0x01, dma, 0);
 148         io->set_iomap_alias_w(0x03, dma, 1);
 149         io->set_iomap_alias_w(0x05, dma, 2);
 150         io->set_iomap_alias_w(0x07, dma, 3);
 151         io->set_iomap_alias_w(0x09, dma, 4);
 152         io->set_iomap_alias_w(0x0b, dma, 5);
 153         io->set_iomap_alias_w(0x0d, dma, 6);
 154         io->set_iomap_alias_w(0x0f, dma, 7);
 155         io->set_iomap_alias_w(0x11, dma, 8);
 156         io->set_iomap_alias_w(0x13, dma, 9);
 157         io->set_iomap_alias_w(0x15, dma, 0x0a);
 158         io->set_iomap_alias_w(0x17, dma, 0x0b);
 159         io->set_iomap_alias_w(0x19, dma, 0x0c);
 160         io->set_iomap_alias_w(0x1b, dma, 0x0d);
 161         io->set_iomap_alias_w(0x1d, dma, 0x0e);
 162         io->set_iomap_alias_w(0x1f, dma, 0x0f);
 163         io->set_iomap_single_w(0x20, rtc);
 164         io->set_iomap_single_w(0x21, system);
 165         io->set_iomap_single_w(0x23, system);
 166         io->set_iomap_single_w(0x25, system);
 167         io->set_iomap_single_w(0x27, system);
 168         io->set_iomap_single_w(0x29, system);
 169         io->set_iomap_alias_w(0x30, sio_r, 0);
 170         io->set_iomap_alias_w(0x32, sio_r, 1);
 171         io->set_iomap_alias_w(0x31, pio_s, 0);
 172         io->set_iomap_alias_w(0x33, pio_s, 1);
 173         io->set_iomap_alias_w(0x35, pio_s, 2);
 174         io->set_iomap_alias_w(0x37, pio_s, 3);
 175         io->set_iomap_single_w(0x3b, system);
 176         io->set_iomap_alias_w(0x40, pio_p, 0);
 177         io->set_iomap_alias_w(0x42, pio_p, 1);
 178         io->set_iomap_alias_w(0x44, pio_p, 2);
 179         io->set_iomap_alias_w(0x46, pio_p, 3);
 180         io->set_iomap_alias_w(0x41, sio_k, 0);
 181         io->set_iomap_alias_w(0x43, sio_k, 1);
 182         io->set_iomap_single_w(0x50, system);
 183         io->set_iomap_single_w(0x52, system);
 184         io->set_iomap_alias_w(0x60, gdc_c, 0);
 185         io->set_iomap_alias_w(0x62, gdc_c, 1);
 186         io->set_iomap_single_w(0x64, display);
 187         io->set_iomap_single_w(0x68, display);
 188         io->set_iomap_single_w(0x6a, display);
 189         io->set_iomap_single_w(0x6c, display);
 190         io->set_iomap_single_w(0x70, display);
 191         io->set_iomap_single_w(0x72, display);
 192         io->set_iomap_single_w(0x74, memory);
 193         io->set_iomap_single_w(0x76, display);
 194         io->set_iomap_single_w(0x78, display);
 195         io->set_iomap_single_w(0x7a, display);
 196         io->set_iomap_alias_w(0x71, pit, 0);
 197         io->set_iomap_alias_w(0x73, pit, 1);
 198         io->set_iomap_alias_w(0x75, pit, 2);
 199         io->set_iomap_alias_w(0x77, pit, 3);
 200         io->set_iomap_single_w(0x92, floppy);
 201         io->set_iomap_single_w(0x94, floppy);
 202         io->set_iomap_alias_w(0xa0, gdc_g, 0);
 203         io->set_iomap_alias_w(0xa2, gdc_g, 1);
 204         io->set_iomap_single_w(0xa4, display);
 205         io->set_iomap_single_w(0xa6, display);
 206         io->set_iomap_single_w(0xa8, display);
 207         io->set_iomap_single_w(0xaa, display);
 208         io->set_iomap_single_w(0xac, display);
 209         io->set_iomap_single_w(0xae, display);
 210         io->set_iomap_single_w(0xca, floppy);
 211         io->set_iomap_single_w(0xcc, floppy);
 212         io->set_iomap_single_w(0xbe, floppy);
 213
 214         io->set_iomap_alias_r(0x00, pic, 0);
 215         io->set_iomap_alias_r(0x02, pic, 1);
 216         io->set_iomap_alias_r(0x08, pic, 2);
 217         io->set_iomap_alias_r(0x0a, pic, 3);
 218         io->set_iomap_alias_r(0x01, dma, 0);
 219         io->set_iomap_alias_r(0x03, dma, 1);
 220         io->set_iomap_alias_r(0x05, dma, 2);
 221         io->set_iomap_alias_r(0x07, dma, 3);
 222         io->set_iomap_alias_r(0x09, dma, 4);
 223         io->set_iomap_alias_r(0x0b, dma, 5);
 224         io->set_iomap_alias_r(0x0d, dma, 6);
 225         io->set_iomap_alias_r(0x0f, dma, 7);
 226         io->set_iomap_alias_r(0x11, dma, 8);
 227         io->set_iomap_alias_r(0x13, dma, 9);
 228         io->set_iomap_alias_r(0x15, dma, 0x0a);
 229         io->set_iomap_alias_r(0x17, dma, 0x0b);
 230         io->set_iomap_alias_r(0x19, dma, 0x0c);
 231         io->set_iomap_alias_r(0x1b, dma, 0x0d);
 232         io->set_iomap_alias_r(0x1d, dma, 0x0e);
 233         io->set_iomap_alias_r(0x1f, dma, 0x0f);
 234         io->set_iomap_alias_r(0x30, sio_r, 0);
 235         io->set_iomap_alias_r(0x32, sio_r, 1);
 236         io->set_iomap_alias_r(0x31, pio_s, 0);
 237         io->set_iomap_alias_r(0x33, pio_s, 1);
 238         io->set_iomap_alias_r(0x35, pio_s, 2);
 239         io->set_iomap_alias_r(0x37, pio_s, 3);
 240         io->set_iomap_single_r(0x39, system);
 241         io->set_iomap_alias_r(0x40, pio_p, 0);
 242         io->set_iomap_alias_r(0x42, pio_p, 1);
 243         io->set_iomap_alias_r(0x44, pio_p, 2);
 244         io->set_iomap_alias_r(0x46, pio_p, 3);
 245         io->set_iomap_alias_r(0x41, sio_k, 0);
 246         io->set_iomap_alias_r(0x43, sio_k, 1);
 247         io->set_iomap_alias_r(0x60, gdc_c, 0);
 248         io->set_iomap_alias_r(0x62, gdc_c, 1);
 249         io->set_iomap_alias_r(0x71, pit, 0);
 250         io->set_iomap_alias_r(0x73, pit, 1);
 251         io->set_iomap_alias_r(0x75, pit, 2);
 252         io->set_iomap_single_r(0x90, floppy);
 253         io->set_iomap_single_r(0x92, floppy);
 254         io->set_iomap_single_r(0x94, floppy);
 255         io->set_iomap_alias_r(0xa0, gdc_g, 0);
 256         io->set_iomap_alias_r(0xa2, gdc_g, 1);
 257         io->set_iomap_single_r(0xc8, floppy);
 258         io->set_iomap_single_r(0xca, floppy);
 259         io->set_iomap_single_r(0xcc, floppy);
 260         io->set_iomap_single_r(0xbe, floppy);
 261
 262         // initialize all devices
 263 #if defined(__GIT_REPO_VERSION)
 264         set_git_repo_version(__GIT_REPO_VERSION);
 265 #endif
 266         initialize_devices();
 267 }
 268
 269 VM::~VM()
 270 {
 271         // delete all devices
 272         for(DEVICE* device = first_device; device;) {
 273                 DEVICE *next_device = device->next_device;
 274                 device->release();
 275                 delete device;
 276                 device = next_device;
 277         }
 278 }
 279
 280 DEVICE* VM::get_device(int id)
 281 {
 282         for(DEVICE* device = first_device; device; device = device->next_device) {
 283                 if(device->this_device_id == id) {
 284                         return device;
 285                 }
 286         }
 287         return NULL;
 288 }
 289
 290 // ----------------------------------------------------------------------------
 291 // drive virtual machine
 292 // ----------------------------------------------------------------------------
 293
 294 void VM::reset()
 295 {
 296         // reset all devices
 297         for(DEVICE* device = first_device; device; device = device->next_device) {
 298                 device->reset();
 299         }
 300
 301         // initial device settings
 302         sio_k->write_signal(SIG_I8251_DSR, 1, 1);               // DSR = 1
 303         pio_s->write_io8(3, 0x92);
 304         pio_s->write_signal(SIG_I8255_PORT_A, 0x04, 0xff);      // SW = FDD
 305         pio_s->write_signal(SIG_I8255_PORT_B, 0xe1, 0xff);
 306         pio_p->write_io8(3, 0x82);
 307         pio_p->write_signal(SIG_I8255_PORT_B, 0x51, 0xff);
 308         beep->write_signal(SIG_BEEP_ON, 1, 1);
 309         beep->write_signal(SIG_BEEP_MUTE, 1, 1);
 310 }
 311
 312 void VM::run()
 313 {
 314         event->drive();
 315 }
 316
 317 // ----------------------------------------------------------------------------
 318 // debugger
 319 // ----------------------------------------------------------------------------
 320
 321 #ifdef USE_DEBUGGER
 322 DEVICE *VM::get_cpu(int index)
 323 {
 324         if(index == 0) {
 325                 return cpu;
 326         }
 327         return NULL;
 328 }
 329 #endif
 330
 331 // ----------------------------------------------------------------------------
 332 // draw screen
 333 // ----------------------------------------------------------------------------
 334
 335 void VM::draw_screen()
 336 {
 337         display->draw_screen();
 338 }
 339
 340 // ----------------------------------------------------------------------------
 341 // soud manager
 342 // ----------------------------------------------------------------------------
 343
 344 void VM::initialize_sound(int rate, int samples)
 345 {
 346         // init sound manager
 347         event->initialize_sound(rate, samples);
 348
 349         // init sound gen
 350         beep->initialize_sound(rate, 2400, 8000);
 351 }
 352
 353 uint16_t* VM::create_sound(int* extra_frames)
 354 {
 355         return event->create_sound(extra_frames);
 356 }
 357
 358 int VM::get_sound_buffer_ptr()
 359 {
 360         return event->get_sound_buffer_ptr();
 361 }
 362
 363 #ifdef USE_SOUND_VOLUME
 364 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 365 {
 366         if(ch == 0) {
 367                 beep->set_volume(0, decibel_l, decibel_r);
 368         } else if(ch == 1) {
 369                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 370                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 371                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 372         }
 373 }
 374 #endif
 375
 376 // ----------------------------------------------------------------------------
 377 // notify key
 378 // ----------------------------------------------------------------------------
 379
 380 void VM::key_down(int code, bool repeat)
 381 {
 382         keyboard->key_down(code);
 383 }
 384
 385 void VM::key_up(int code)
 386 {
 387         keyboard->key_up(code);
 388 }
 389
 390 bool VM::get_caps_locked()
 391 {
 392         return keyboard->get_caps_locked();
 393 }
 394
 395 bool VM::get_kana_locked()
 396 {
 397         return keyboard->get_kana_locked();
 398 }
 399
 400 // ----------------------------------------------------------------------------
 401 // user interface
 402 // ----------------------------------------------------------------------------
 403
 404 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 405 {
 406         fdc->open_disk(drv, file_path, bank);
 407 }
 408
 409 void VM::close_floppy_disk(int drv)
 410 {
 411         fdc->close_disk(drv);
 412 }
 413
 414 bool VM::is_floppy_disk_inserted(int drv)
 415 {
 416         return fdc->is_disk_inserted(drv);
 417 }
 418
 419 void VM::is_floppy_disk_protected(int drv, bool value)
 420 {
 421         fdc->is_disk_protected(drv, value);
 422 }
 423
 424 bool VM::is_floppy_disk_protected(int drv)
 425 {
 426         return fdc->is_disk_protected(drv);
 427 }
 428
 429 uint32_t VM::is_floppy_disk_accessed()
 430 {
 431         return fdc->read_signal(0);
 432 }
 433
 434 bool VM::is_frame_skippable()
 435 {
 436         return event->is_frame_skippable();
 437 }
 438
 439 void VM::update_config()
 440 {
 441         for(DEVICE* device = first_device; device; device = device->next_device) {
 442                 device->update_config();
 443         }
 444 }
 445
 446 double VM::get_current_usec()
 447 {
 448         if(event == NULL) return 0.0;
 449         return event->get_current_usec();
 450 }
 451
 452 uint64_t VM::get_current_clock_uint64()
 453 {
 454                 if(event == NULL) return (uint64_t)0;
 455                 return event->get_current_clock_uint64();
 456 }
 457
 458 #define STATE_VERSION   3
 459
 460 bool VM::process_state(FILEIO* state_fio, bool loading)
 461 {
 462         if(!(VM_TEMPLATE::process_state_core(state_fio, loading, STATE_VERSION))) {
 463                 return false;
 464         }
 465         // Machine specified.
 466         return true;
 467 }