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.h"
  17 #include "../i8237.h"
  18 #include "../i8251.h"
  19 #include "../i8253.h"
  20 #include "../i8255.h"
  21 #include "../i8259.h"
  22 #include "../io.h"
  23 #include "../noise.h"
  24 #include "../upd1990a.h"
  25 #include "../upd7220.h"
  26 #include "../upd765a.h"
  27
  28 #ifdef USE_DEBUGGER
  29 #include "../debugger.h"
  30 #endif
  31
  32 #include "display.h"
  33 #include "floppy.h"
  34 #include "keyboard.h"
  35 #include "./memory.h"
  36 #include "system.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // initialize
  40 // ----------------------------------------------------------------------------
  41
  42 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  43 {
  44         // create devices
  45         first_device = last_device = NULL;
  46         dummy = new DEVICE(this, emu);  // must be 1st device
  47         event = new EVENT(this, emu);   // must be 2nd device
  48         dummy->set_device_name(_T("1st Dummy"));
  49
  50         beep = new BEEP(this, emu);
  51         cpu = new I386(this, emu);
  52         dma = new I8237(this, emu);
  53         sio_r = new I8251(this, emu);   // for rs232c
  54         sio_r->set_device_name(_T("8251 SIO (RS-232C)"));
  55         sio_k = new I8251(this, emu);   // for keyboard
  56         sio_k->set_device_name(_T("8251 SIO (Keyboard)"));
  57         pit = new I8253(this, emu);
  58         pio_s = new I8255(this, emu);   // for system port
  59         pio_s->set_device_name(_T("8255 PIO (System)"));
  60         pio_p = new I8255(this, emu);   // for printer
  61         pio_p->set_device_name(_T("8255 PIO (Printer)"));
  62         pic = new I8259(this, emu);
  63         io = new IO(this, emu);
  64         rtc = new UPD1990A(this, emu);
  65         gdc_c = new UPD7220(this, emu);
  66         gdc_c->set_device_name(_T("uPD7220 GDC (Character)"));
  67         gdc_g = new UPD7220(this, emu);
  68         gdc_g->set_device_name(_T("uPD7220 GDC (Graphics)"));
  69         fdc = new UPD765A(this, emu);
  70         fdc->set_context_noise_seek(new NOISE(this, emu));
  71         fdc->set_context_noise_head_down(new NOISE(this, emu));
  72         fdc->set_context_noise_head_up(new NOISE(this, emu));
  73
  74         display = new DISPLAY(this, emu);
  75         floppy = new FLOPPY(this, emu);
  76         keyboard = new KEYBOARD(this, emu);
  77         memory = new N5200_MEMORY(this, emu);
  78         system = new SYSTEM(this, emu);
  79
  80         // set contexts
  81         event->set_context_cpu(cpu);
  82         event->set_context_sound(beep);
  83         event->set_context_sound(fdc->get_context_noise_seek());
  84         event->set_context_sound(fdc->get_context_noise_head_down());
  85         event->set_context_sound(fdc->get_context_noise_head_up());
  86
  87 //???   sio_r->set_context_rxrdy(pic, SIG_I8259_CHIP0 | SIG_I8259_IR4, 1);
  88         sio_k->set_context_rxrdy(pic, SIG_I8259_CHIP0 | SIG_I8259_IR1, 1);
  89         sio_k->set_context_rst(keyboard, SIG_KEYBOARD_RST, 1);
  90         sio_k->set_context_out(keyboard, SIG_KEYBOARD_RECV);
  91         pit->set_context_ch0(pic, SIG_I8259_CHIP0 | SIG_I8259_IR0, 1);
  92         pit->set_constant_clock(0, 1996800);
  93         pit->set_constant_clock(1, 300);        // ???
  94         pit->set_constant_clock(2, 1996800);
  95         pio_s->set_context_port_c(beep, SIG_BEEP_MUTE, 8, 0);
  96         pic->set_context_cpu(cpu);
  97         rtc->set_context_dout(pio_s, SIG_I8255_PORT_B, 1);
  98         dma->set_context_memory(memory);
  99         dma->set_context_ch2(fdc);      // 1MB
 100         dma->set_context_ch3(fdc);      // 640KB
 101         gdc_g->set_vram_ptr(memory->get_vram(), 0x20000);
 102         fdc->set_context_irq(pic, SIG_I8259_IR6, 1);
 103         fdc->set_context_drq(floppy, SIG_FLOPPY_DRQ, 1);
 104
 105         display->set_context_pic(pic);
 106         display->set_vram_ptr(memory->get_vram());
 107         display->set_tvram_ptr(memory->get_tvram());
 108         floppy->set_context_fdc(fdc);
 109         floppy->set_context_dma(dma);
 110         keyboard->set_context_sio(sio_k);
 111         system->set_context_dma(dma);
 112
 113         // cpu bus
 114         cpu->set_context_mem(memory);
 115         cpu->set_context_io(io);
 116         cpu->set_context_intr(pic);
 117 #ifdef USE_DEBUGGER
 118         cpu->set_context_debugger(new DEBUGGER(this, emu));
 119 #endif
 120
 121         // i/o bus
 122         io->set_iomap_alias_w(0x00, pic, 0);
 123         io->set_iomap_alias_w(0x02, pic, 1);
 124         io->set_iomap_alias_w(0x08, pic, 2);
 125         io->set_iomap_alias_w(0x0a, pic, 3);
 126         io->set_iomap_alias_w(0x01, dma, 0);
 127         io->set_iomap_alias_w(0x03, dma, 1);
 128         io->set_iomap_alias_w(0x05, dma, 2);
 129         io->set_iomap_alias_w(0x07, dma, 3);
 130         io->set_iomap_alias_w(0x09, dma, 4);
 131         io->set_iomap_alias_w(0x0b, dma, 5);
 132         io->set_iomap_alias_w(0x0d, dma, 6);
 133         io->set_iomap_alias_w(0x0f, dma, 7);
 134         io->set_iomap_alias_w(0x11, dma, 8);
 135         io->set_iomap_alias_w(0x13, dma, 9);
 136         io->set_iomap_alias_w(0x15, dma, 0x0a);
 137         io->set_iomap_alias_w(0x17, dma, 0x0b);
 138         io->set_iomap_alias_w(0x19, dma, 0x0c);
 139         io->set_iomap_alias_w(0x1b, dma, 0x0d);
 140         io->set_iomap_alias_w(0x1d, dma, 0x0e);
 141         io->set_iomap_alias_w(0x1f, dma, 0x0f);
 142         io->set_iomap_single_w(0x20, rtc);
 143         io->set_iomap_single_w(0x21, system);
 144         io->set_iomap_single_w(0x23, system);
 145         io->set_iomap_single_w(0x25, system);
 146         io->set_iomap_single_w(0x27, system);
 147         io->set_iomap_single_w(0x29, system);
 148         io->set_iomap_alias_w(0x30, sio_r, 0);
 149         io->set_iomap_alias_w(0x32, sio_r, 1);
 150         io->set_iomap_alias_w(0x31, pio_s, 0);
 151         io->set_iomap_alias_w(0x33, pio_s, 1);
 152         io->set_iomap_alias_w(0x35, pio_s, 2);
 153         io->set_iomap_alias_w(0x37, pio_s, 3);
 154         io->set_iomap_single_w(0x3b, system);
 155         io->set_iomap_alias_w(0x40, pio_p, 0);
 156         io->set_iomap_alias_w(0x42, pio_p, 1);
 157         io->set_iomap_alias_w(0x44, pio_p, 2);
 158         io->set_iomap_alias_w(0x46, pio_p, 3);
 159         io->set_iomap_alias_w(0x41, sio_k, 0);
 160         io->set_iomap_alias_w(0x43, sio_k, 1);
 161         io->set_iomap_single_w(0x50, system);
 162         io->set_iomap_single_w(0x52, system);
 163         io->set_iomap_alias_w(0x60, gdc_c, 0);
 164         io->set_iomap_alias_w(0x62, gdc_c, 1);
 165         io->set_iomap_single_w(0x64, display);
 166         io->set_iomap_single_w(0x68, display);
 167         io->set_iomap_single_w(0x6a, display);
 168         io->set_iomap_single_w(0x6c, display);
 169         io->set_iomap_single_w(0x70, display);
 170         io->set_iomap_single_w(0x72, display);
 171         io->set_iomap_single_w(0x74, memory);
 172         io->set_iomap_single_w(0x76, display);
 173         io->set_iomap_single_w(0x78, display);
 174         io->set_iomap_single_w(0x7a, display);
 175         io->set_iomap_alias_w(0x71, pit, 0);
 176         io->set_iomap_alias_w(0x73, pit, 1);
 177         io->set_iomap_alias_w(0x75, pit, 2);
 178         io->set_iomap_alias_w(0x77, pit, 3);
 179         io->set_iomap_single_w(0x92, floppy);
 180         io->set_iomap_single_w(0x94, floppy);
 181         io->set_iomap_alias_w(0xa0, gdc_g, 0);
 182         io->set_iomap_alias_w(0xa2, gdc_g, 1);
 183         io->set_iomap_single_w(0xa4, display);
 184         io->set_iomap_single_w(0xa6, display);
 185         io->set_iomap_single_w(0xa8, display);
 186         io->set_iomap_single_w(0xaa, display);
 187         io->set_iomap_single_w(0xac, display);
 188         io->set_iomap_single_w(0xae, display);
 189         io->set_iomap_single_w(0xca, floppy);
 190         io->set_iomap_single_w(0xcc, floppy);
 191         io->set_iomap_single_w(0xbe, floppy);
 192
 193         io->set_iomap_alias_r(0x00, pic, 0);
 194         io->set_iomap_alias_r(0x02, pic, 1);
 195         io->set_iomap_alias_r(0x08, pic, 2);
 196         io->set_iomap_alias_r(0x0a, pic, 3);
 197         io->set_iomap_alias_r(0x01, dma, 0);
 198         io->set_iomap_alias_r(0x03, dma, 1);
 199         io->set_iomap_alias_r(0x05, dma, 2);
 200         io->set_iomap_alias_r(0x07, dma, 3);
 201         io->set_iomap_alias_r(0x09, dma, 4);
 202         io->set_iomap_alias_r(0x0b, dma, 5);
 203         io->set_iomap_alias_r(0x0d, dma, 6);
 204         io->set_iomap_alias_r(0x0f, dma, 7);
 205         io->set_iomap_alias_r(0x11, dma, 8);
 206         io->set_iomap_alias_r(0x13, dma, 9);
 207         io->set_iomap_alias_r(0x15, dma, 0x0a);
 208         io->set_iomap_alias_r(0x17, dma, 0x0b);
 209         io->set_iomap_alias_r(0x19, dma, 0x0c);
 210         io->set_iomap_alias_r(0x1b, dma, 0x0d);
 211         io->set_iomap_alias_r(0x1d, dma, 0x0e);
 212         io->set_iomap_alias_r(0x1f, dma, 0x0f);
 213         io->set_iomap_alias_r(0x30, sio_r, 0);
 214         io->set_iomap_alias_r(0x32, sio_r, 1);
 215         io->set_iomap_alias_r(0x31, pio_s, 0);
 216         io->set_iomap_alias_r(0x33, pio_s, 1);
 217         io->set_iomap_alias_r(0x35, pio_s, 2);
 218         io->set_iomap_alias_r(0x37, pio_s, 3);
 219         io->set_iomap_single_r(0x39, system);
 220         io->set_iomap_alias_r(0x40, pio_p, 0);
 221         io->set_iomap_alias_r(0x42, pio_p, 1);
 222         io->set_iomap_alias_r(0x44, pio_p, 2);
 223         io->set_iomap_alias_r(0x46, pio_p, 3);
 224         io->set_iomap_alias_r(0x41, sio_k, 0);
 225         io->set_iomap_alias_r(0x43, sio_k, 1);
 226         io->set_iomap_alias_r(0x60, gdc_c, 0);
 227         io->set_iomap_alias_r(0x62, gdc_c, 1);
 228         io->set_iomap_alias_r(0x71, pit, 0);
 229         io->set_iomap_alias_r(0x73, pit, 1);
 230         io->set_iomap_alias_r(0x75, pit, 2);
 231         io->set_iomap_single_r(0x90, floppy);
 232         io->set_iomap_single_r(0x92, floppy);
 233         io->set_iomap_single_r(0x94, floppy);
 234         io->set_iomap_alias_r(0xa0, gdc_g, 0);
 235         io->set_iomap_alias_r(0xa2, gdc_g, 1);
 236         io->set_iomap_single_r(0xc8, floppy);
 237         io->set_iomap_single_r(0xca, floppy);
 238         io->set_iomap_single_r(0xcc, floppy);
 239         io->set_iomap_single_r(0xbe, floppy);
 240
 241         // initialize all devices
 242 #if defined(__GIT_REPO_VERSION)
 243         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 244 #endif
 245         for(DEVICE* device = first_device; device; device = device->next_device) {
 246                 device->initialize();
 247         }
 248 }
 249
 250 VM::~VM()
 251 {
 252         // delete all devices
 253         for(DEVICE* device = first_device; device;) {
 254                 DEVICE *next_device = device->next_device;
 255                 device->release();
 256                 delete device;
 257                 device = next_device;
 258         }
 259 }
 260
 261 DEVICE* VM::get_device(int id)
 262 {
 263         for(DEVICE* device = first_device; device; device = device->next_device) {
 264                 if(device->this_device_id == id) {
 265                         return device;
 266                 }
 267         }
 268         return NULL;
 269 }
 270
 271 // ----------------------------------------------------------------------------
 272 // drive virtual machine
 273 // ----------------------------------------------------------------------------
 274
 275 void VM::reset()
 276 {
 277         // reset all devices
 278         for(DEVICE* device = first_device; device; device = device->next_device) {
 279                 device->reset();
 280         }
 281
 282         // initial device settings
 283         sio_k->write_signal(SIG_I8251_DSR, 1, 1);               // DSR = 1
 284         pio_s->write_io8(3, 0x92);
 285         pio_s->write_signal(SIG_I8255_PORT_A, 0x04, 0xff);      // SW = FDD
 286         pio_s->write_signal(SIG_I8255_PORT_B, 0xe1, 0xff);
 287         pio_p->write_io8(3, 0x82);
 288         pio_p->write_signal(SIG_I8255_PORT_B, 0x51, 0xff);
 289         beep->write_signal(SIG_BEEP_ON, 1, 1);
 290         beep->write_signal(SIG_BEEP_MUTE, 1, 1);
 291 }
 292
 293 void VM::run()
 294 {
 295         event->drive();
 296 }
 297
 298 // ----------------------------------------------------------------------------
 299 // debugger
 300 // ----------------------------------------------------------------------------
 301
 302 #ifdef USE_DEBUGGER
 303 DEVICE *VM::get_cpu(int index)
 304 {
 305         if(index == 0) {
 306                 return cpu;
 307         }
 308         return NULL;
 309 }
 310 #endif
 311
 312 // ----------------------------------------------------------------------------
 313 // draw screen
 314 // ----------------------------------------------------------------------------
 315
 316 void VM::draw_screen()
 317 {
 318         display->draw_screen();
 319 }
 320
 321 // ----------------------------------------------------------------------------
 322 // soud manager
 323 // ----------------------------------------------------------------------------
 324
 325 void VM::initialize_sound(int rate, int samples)
 326 {
 327         // init sound manager
 328         event->initialize_sound(rate, samples);
 329
 330         // init sound gen
 331         beep->initialize_sound(rate, 2400, 8000);
 332 }
 333
 334 uint16_t* VM::create_sound(int* extra_frames)
 335 {
 336         return event->create_sound(extra_frames);
 337 }
 338
 339 int VM::get_sound_buffer_ptr()
 340 {
 341         return event->get_sound_buffer_ptr();
 342 }
 343
 344 #ifdef USE_SOUND_VOLUME
 345 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 346 {
 347         if(ch == 0) {
 348                 beep->set_volume(0, decibel_l, decibel_r);
 349         } else if(ch == 1) {
 350                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 351                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 352                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 353         }
 354 }
 355 #endif
 356
 357 // ----------------------------------------------------------------------------
 358 // notify key
 359 // ----------------------------------------------------------------------------
 360
 361 void VM::key_down(int code, bool repeat)
 362 {
 363         keyboard->key_down(code);
 364 }
 365
 366 void VM::key_up(int code)
 367 {
 368         keyboard->key_up(code);
 369 }
 370
 371 bool VM::get_caps_locked()
 372 {
 373         return keyboard->get_caps_locked();
 374 }
 375
 376 bool VM::get_kana_locked()
 377 {
 378         return keyboard->get_kana_locked();
 379 }
 380
 381 // ----------------------------------------------------------------------------
 382 // user interface
 383 // ----------------------------------------------------------------------------
 384
 385 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 386 {
 387         fdc->open_disk(drv, file_path, bank);
 388 }
 389
 390 void VM::close_floppy_disk(int drv)
 391 {
 392         fdc->close_disk(drv);
 393 }
 394
 395 bool VM::is_floppy_disk_inserted(int drv)
 396 {
 397         return fdc->is_disk_inserted(drv);
 398 }
 399
 400 void VM::is_floppy_disk_protected(int drv, bool value)
 401 {
 402         fdc->is_disk_protected(drv, value);
 403 }
 404
 405 bool VM::is_floppy_disk_protected(int drv)
 406 {
 407         return fdc->is_disk_protected(drv);
 408 }
 409
 410 uint32_t VM::is_floppy_disk_accessed()
 411 {
 412         return fdc->read_signal(0);
 413 }
 414
 415 bool VM::is_frame_skippable()
 416 {
 417         return event->is_frame_skippable();
 418 }
 419
 420 void VM::update_config()
 421 {
 422         for(DEVICE* device = first_device; device; device = device->next_device) {
 423                 device->update_config();
 424         }
 425 }
 426
 427 #define STATE_VERSION   1
 428
 429 bool VM::process_state(FILEIO* state_fio, bool loading)
 430 {
 431         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 432                 return false;
 433         }
 434         for(DEVICE* device = first_device; device; device = device->next_device) {
 435                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 436                 // const char *name = typeid(*device).name();
 437                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 438                 const char *name = device->get_device_name();
 439                 int len = strlen(name);
 440
 441                 if(!state_fio->StateCheckInt32(len)) {
 442                         if(loading) {
 443                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 444                         }
 445                         return false;
 446                 }
 447                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 448                         if(loading) {
 449                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 450                         }
 451                         return false;
 452                 }
 453                 if(!device->process_state(state_fio, loading)) {
 454                         if(loading) {
 455                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 456                         }
 457                         return false;
 458                 }
 459         }
 460         // Machine specified.
 461         return true;
 462 }
 463