source/src/vm/pc100/pc100.cpp

   1 /*
   2         NEC PC-100 Emulator 'ePC-100'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.07.12 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "pc100.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../and.h"
  16 #include "../beep.h"
  17 #include "../disk.h"
  18 #include "../i8251.h"
  19 #include "../i8255.h"
  20 #include "../i8259.h"
  21 #include "../i286.h"
  22 #include "../io.h"
  23 #include "../memory.h"
  24 #include "../msm58321.h"
  25 #include "../noise.h"
  26 #include "../pcm1bit.h"
  27 #include "../upd765a.h"
  28
  29 #ifdef USE_DEBUGGER
  30 #include "../debugger.h"
  31 #endif
  32
  33 #include "crtc.h"
  34 #include "ioctrl.h"
  35 #include "kanji.h"
  36
  37 // ----------------------------------------------------------------------------
  38 // initialize
  39 // ----------------------------------------------------------------------------
  40
  41 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  42 {
  43         // create devices
  44         first_device = last_device = NULL;
  45         dummy = new DEVICE(this, emu);  // must be 1st device
  46         event = new EVENT(this, emu);   // must be 2nd device
  47
  48         and_drq = new AND(this, emu);
  49         beep = new BEEP(this, emu);
  50         sio = new I8251(this, emu);
  51         pio0 = new I8255(this, emu);
  52         pio0->set_device_name(_T("8255 PIO (RTC)"));
  53         pio1 = new I8255(this, emu);
  54         pio1->set_device_name(_T("8255 PIO (CRTC)"));
  55         pic = new I8259(this, emu);
  56         cpu = new I286(this, emu);
  57         io = new IO(this, emu);
  58         memory = new MEMORY(this, emu);
  59         rtc = new MSM58321(this, emu);
  60         pcm = new PCM1BIT(this, emu);
  61         fdc = new UPD765A(this, emu);
  62         fdc->set_context_noise_seek(new NOISE(this, emu));
  63         fdc->set_context_noise_head_down(new NOISE(this, emu));
  64         fdc->set_context_noise_head_up(new NOISE(this, emu));
  65
  66         crtc = new CRTC(this, emu);
  67         ioctrl = new IOCTRL(this, emu);
  68         kanji = new KANJI(this, emu);
  69
  70         // set contexts
  71         event->set_context_cpu(cpu);
  72         event->set_context_sound(beep);
  73         event->set_context_sound(pcm);
  74         event->set_context_sound(fdc->get_context_noise_seek());
  75         event->set_context_sound(fdc->get_context_noise_head_down());
  76         event->set_context_sound(fdc->get_context_noise_head_up());
  77
  78         and_drq->set_context_out(cpu, SIG_CPU_NMI, 1);
  79         and_drq->set_mask(SIG_AND_BIT_0 | SIG_AND_BIT_1);
  80         sio->set_context_rxrdy(pic, SIG_I8259_IR1, 1);
  81         pio0->set_context_port_a(rtc, SIG_MSM58321_READ, 1, 0);
  82         pio0->set_context_port_a(rtc, SIG_MSM58321_WRITE, 2, 0);
  83         pio0->set_context_port_a(rtc, SIG_MSM58321_ADDR_WRITE, 4, 0);
  84         pio0->set_context_port_c(rtc, SIG_MSM58321_DATA, 0x0f, 0);
  85         pio1->set_context_port_a(crtc, SIG_CRTC_BITMASK_LOW, 0xff, 0);
  86         pio1->set_context_port_b(crtc, SIG_CRTC_BITMASK_HIGH, 0xff, 0);
  87         pio1->set_context_port_c(crtc, SIG_CRTC_VRAM_PLANE, 0x3f, 0);
  88         pio1->set_context_port_c(and_drq, SIG_AND_BIT_0, 0x80, 0);
  89         pio1->set_context_port_c(ioctrl, SIG_IOCTRL_RESET, 0x40, 0);
  90         pic->set_context_cpu(cpu);
  91         rtc->set_context_data(pio0, SIG_I8255_PORT_C, 0x0f, 0);
  92         rtc->set_context_busy(pio0, SIG_I8255_PORT_C, 0x10);
  93         fdc->set_context_irq(cpu, SIG_CPU_NMI, 1);
  94         fdc->set_context_drq(and_drq, SIG_AND_BIT_1, 1);
  95
  96         crtc->set_context_pic(pic);
  97         ioctrl->set_context_pic(pic);
  98         ioctrl->set_context_fdc(fdc);
  99         ioctrl->set_context_beep(beep);
 100         ioctrl->set_context_pcm(pcm);
 101
 102         // cpu bus
 103         cpu->set_context_mem(memory);
 104         cpu->set_context_io(io);
 105         cpu->set_context_intr(pic);
 106 #ifdef USE_DEBUGGER
 107         cpu->set_context_debugger(new DEBUGGER(this, emu));
 108 #endif
 109
 110         // memory bus
 111         memset(ram, 0, sizeof(ram));
 112         memset(ipl, 0xff, sizeof(ipl));
 113
 114         memory->read_bios(_T("IPL.ROM"), ipl, sizeof(ipl));
 115
 116         memory->set_memory_rw(0x00000, 0xbffff, ram);
 117         memory->set_memory_mapped_io_rw(0xc0000, 0xdffff, crtc);
 118         memory->set_memory_r(0xf8000, 0xfffff, ipl);
 119
 120         // i/o bus
 121         io->set_iomap_alias_rw(0x00, pic, 0);
 122         io->set_iomap_alias_rw(0x02, pic, 1);
 123 //      io->set_iomap_alias_rw(0x04, dma, 0);
 124 //      io->set_iomap_alias_rw(0x06, dma, 1);
 125         io->set_iomap_alias_r(0x08, fdc, 0);
 126         io->set_iomap_alias_rw(0x0a, fdc, 1);
 127         io->set_iomap_alias_rw(0x10, pio0, 0);
 128         io->set_iomap_alias_rw(0x12, pio0, 1);
 129         io->set_iomap_alias_rw(0x14, pio0, 2);
 130         io->set_iomap_alias_rw(0x16, pio0, 3);
 131         io->set_iomap_alias_rw(0x18, pio1, 0);
 132         io->set_iomap_alias_rw(0x1a, pio1, 1);
 133         io->set_iomap_alias_rw(0x1c, pio1, 2);
 134         io->set_iomap_alias_rw(0x1e, pio1, 3);
 135         io->set_iomap_single_r(0x20, ioctrl);
 136         io->set_iomap_single_rw(0x22, ioctrl);
 137         io->set_iomap_single_w(0x24, ioctrl);
 138         io->set_iomap_alias_rw(0x28, sio, 0);
 139         io->set_iomap_alias_rw(0x2a, sio, 1);
 140         io->set_iomap_single_rw(0x30, crtc);
 141         io->set_iomap_single_rw(0x38, crtc);
 142         io->set_iomap_single_rw(0x3a, crtc);
 143         io->set_iomap_single_rw(0x3c, crtc);
 144         io->set_iomap_single_rw(0x3e, crtc);
 145         for(int i = 0x40; i < 0x62; i++) {
 146                 io->set_iomap_single_rw(i, crtc);
 147         }
 148         io->set_iomap_single_rw(0x80, kanji);
 149         io->set_iomap_single_rw(0x81, kanji);
 150         io->set_iomap_single_w(0x84, kanji);
 151         io->set_iomap_single_w(0x86, kanji);
 152
 153         // initialize all devices
 154 #if defined(__GIT_REPO_VERSION)
 155         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 156 #endif
 157         for(DEVICE* device = first_device; device; device = device->next_device) {
 158                 device->initialize();
 159         }
 160         decl_state();
 161 }
 162
 163 VM::~VM()
 164 {
 165         // delete all devices
 166         for(DEVICE* device = first_device; device;) {
 167                 DEVICE *next_device = device->next_device;
 168                 device->release();
 169                 delete device;
 170                 device = next_device;
 171         }
 172 }
 173
 174 DEVICE* VM::get_device(int id)
 175 {
 176         for(DEVICE* device = first_device; device; device = device->next_device) {
 177                 if(device->this_device_id == id) {
 178                         return device;
 179                 }
 180         }
 181         return NULL;
 182 }
 183
 184 // ----------------------------------------------------------------------------
 185 // drive virtual machine
 186 // ----------------------------------------------------------------------------
 187
 188 void VM::reset()
 189 {
 190         // reset all devices
 191         for(DEVICE* device = first_device; device; device = device->next_device) {
 192                 device->reset();
 193         }
 194         for(int i = 0; i < 4; i++) {
 195                 if(config.drive_type) {
 196                         fdc->set_drive_type(i, DRIVE_TYPE_2DD);
 197                 } else {
 198                         fdc->set_drive_type(i, DRIVE_TYPE_2D);
 199                 }
 200         }
 201 }
 202
 203 void VM::run()
 204 {
 205         event->drive();
 206 }
 207
 208 // ----------------------------------------------------------------------------
 209 // debugger
 210 // ----------------------------------------------------------------------------
 211
 212 #ifdef USE_DEBUGGER
 213 DEVICE *VM::get_cpu(int index)
 214 {
 215         if(index == 0) {
 216                 return cpu;
 217         }
 218         return NULL;
 219 }
 220 #endif
 221
 222 // ----------------------------------------------------------------------------
 223 // draw screen
 224 // ----------------------------------------------------------------------------
 225
 226 void VM::draw_screen()
 227 {
 228         crtc->draw_screen();
 229 }
 230
 231 // ----------------------------------------------------------------------------
 232 // soud manager
 233 // ----------------------------------------------------------------------------
 234
 235 void VM::initialize_sound(int rate, int samples)
 236 {
 237         // init sound manager
 238         event->initialize_sound(rate, samples);
 239
 240         // init sound gen
 241         beep->initialize_sound(rate, 2400, 8000);
 242         pcm->initialize_sound(rate, 8000);
 243 }
 244
 245 uint16_t* VM::create_sound(int* extra_frames)
 246 {
 247         return event->create_sound(extra_frames);
 248 }
 249
 250 int VM::get_sound_buffer_ptr()
 251 {
 252         return event->get_sound_buffer_ptr();
 253 }
 254
 255 #ifdef USE_SOUND_VOLUME
 256 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 257 {
 258         if(ch == 0) {
 259                 beep->set_volume(0, decibel_l, decibel_r);
 260         } else if(ch == 1) {
 261                 pcm->set_volume(0, decibel_l, decibel_r);
 262         } else if(ch == 2) {
 263                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 264                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 265                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 266         }
 267 }
 268 #endif
 269
 270 // ----------------------------------------------------------------------------
 271 // notify key
 272 // ----------------------------------------------------------------------------
 273
 274 void VM::key_down(int code, bool repeat)
 275 {
 276         ioctrl->key_down(code);
 277 }
 278
 279 void VM::key_up(int code)
 280 {
 281         ioctrl->key_up(code);
 282 }
 283
 284 bool VM::get_caps_locked()
 285 {
 286         return ioctrl->get_caps_locked();
 287 }
 288
 289 bool VM::get_kana_locked()
 290 {
 291         return ioctrl->get_kana_locked();
 292 }
 293
 294 // ----------------------------------------------------------------------------
 295 // user interface
 296 // ----------------------------------------------------------------------------
 297
 298 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 299 {
 300         fdc->open_disk(drv, file_path, bank);
 301 }
 302
 303 void VM::close_floppy_disk(int drv)
 304 {
 305         fdc->close_disk(drv);
 306 }
 307
 308 bool VM::is_floppy_disk_inserted(int drv)
 309 {
 310         return fdc->is_disk_inserted(drv);
 311 }
 312
 313 void VM::is_floppy_disk_protected(int drv, bool value)
 314 {
 315         fdc->is_disk_protected(drv, value);
 316 }
 317
 318 bool VM::is_floppy_disk_protected(int drv)
 319 {
 320         return fdc->is_disk_protected(drv);
 321 }
 322
 323 uint32_t VM::is_floppy_disk_accessed()
 324 {
 325         return fdc->read_signal(0);
 326 }
 327
 328 bool VM::is_frame_skippable()
 329 {
 330         return event->is_frame_skippable();
 331 }
 332
 333 void VM::update_config()
 334 {
 335         for(DEVICE* device = first_device; device; device = device->next_device) {
 336                 device->update_config();
 337         }
 338 }
 339
 340 #define STATE_VERSION   3
 341
 342 #include "../../statesub.h"
 343 #include "../../qt/gui/csp_logger.h"
 344 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 345
 346 void VM::decl_state(void)
 347 {
 348         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::PC_100_HEAD")), csp_logger);
 349         DECL_STATE_ENTRY_1D_ARRAY(ram, sizeof(ram));
 350         for(DEVICE* device = first_device; device; device = device->next_device) {
 351                 device->decl_state();
 352         }
 353 }
 354
 355 void VM::save_state(FILEIO* state_fio)
 356 {
 357         //state_fio->FputUint32(STATE_VERSION);
 358
 359         if(state_entry != NULL) {
 360                 state_entry->save_state(state_fio);
 361         }
 362         for(DEVICE* device = first_device; device; device = device->next_device) {
 363                 device->save_state(state_fio);
 364         }
 365         //state_fio->Fwrite(ram, sizeof(ram), 1);
 366 }
 367
 368 bool VM::load_state(FILEIO* state_fio)
 369 {
 370         //if(state_fio->FgetUint32() != STATE_VERSION) {
 371         //      return false;
 372         //}
 373         bool mb = false;
 374         if(state_entry != NULL) {
 375                 mb = state_entry->load_state(state_fio);
 376         }
 377         if(!mb) {
 378                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 379                 return false;
 380         }
 381         for(DEVICE* device = first_device; device; device = device->next_device) {
 382                 if(!device->load_state(state_fio)) {
 383                         return false;
 384                 }
 385         }
 386         state_fio->Fread(ram, sizeof(ram), 1);
 387         return true;
 388 }
 389
 390 bool VM::process_state(FILEIO* state_fio, bool loading)
 391 {
 392         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 393                 return false;
 394         }
 395         for(DEVICE* device = first_device; device; device = device->next_device) {
 396                 const char *name = typeid(*device).name() + 6; // skip "class "
 397                 int len = strlen(name);
 398
 399                 if(!state_fio->StateCheckInt32(len)) {
 400                         return false;
 401                 }
 402                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 403                         return false;
 404                 }
 405                 if(!device->process_state(state_fio, loading)) {
 406                         return false;
 407                 }
 408         }
 409         state_fio->StateBuffer(ram, sizeof(ram), 1);
 410         return true;
 411 }