source/src/vm/mz80k/mz80k.cpp

   1 /*
   2         SHARP MZ-80K/C Emulator 'EmuZ-80K'
   3         SHARP MZ-1200 Emulator 'EmuZ-1200'
   4
   5         Author : Takeda.Toshiya
   6         Date   : 2010.08.18-
   7
   8         SHARP MZ-80A Emulator 'EmuZ-80A'
   9         Modify : Hideki Suga
  10         Date   : 2014.12.10 -
  11
  12         [ virtual machine ]
  13 */
  14
  15 #include "mz80k.h"
  16 #include "../../emu.h"
  17 #include "../device.h"
  18 #include "../event.h"
  19
  20 #if defined(_MZ1200) || defined(_MZ80A)
  21 #include "../and.h"
  22 #endif
  23 #include "../datarec.h"
  24 #include "../i8253.h"
  25 #include "../i8255.h"
  26 #include "../ls393.h"
  27 #include "../pcm1bit.h"
  28 #include "../z80.h"
  29
  30 #ifdef USE_DEBUGGER
  31 #include "../debugger.h"
  32 #endif
  33
  34 #include "keyboard.h"
  35 #include "memory.h"
  36
  37 #if defined(SUPPORT_MZ80AIF)
  38 #include "../io.h"
  39 #include "../disk.h"
  40 #include "../mb8877.h"
  41 #include "mz80aif.h"
  42 #elif defined(SUPPORT_MZ80FIO)
  43 #include "../io.h"
  44 #include "../disk.h"
  45 #include "../t3444a.h"
  46 #include "mz80fio.h"
  47 #endif
  48
  49 // ----------------------------------------------------------------------------
  50 // initialize
  51 // ----------------------------------------------------------------------------
  52
  53 VM::VM(EMU* parent_emu) : emu(parent_emu)
  54 {
  55         // create devices
  56         first_device = last_device = NULL;
  57         dummy = new DEVICE(this, emu);  // must be 1st device
  58         event = new EVENT(this, emu);   // must be 2nd device
  59
  60 #if defined(_MZ1200) || defined(_MZ80A)
  61         and_int = new AND(this, emu);
  62 #endif
  63         drec = new DATAREC(this, emu);
  64         ctc = new I8253(this, emu);
  65         pio = new I8255(this, emu);
  66         counter = new LS393(this, emu);
  67         pcm = new PCM1BIT(this, emu);
  68         cpu = new Z80(this, emu);
  69
  70         keyboard = new KEYBOARD(this, emu);
  71         memory = new MEMORY(this, emu);
  72
  73 #if defined(SUPPORT_MZ80AIF)
  74         io = new IO(this, emu);
  75         fdc = new MB8877(this, emu);    // mb8866
  76         mz80aif = new MZ80AIF(this, emu);
  77 #elif defined(SUPPORT_MZ80FIO)
  78         io = new IO(this, emu);
  79         fdc = new T3444A(this, emu);    // t3444m
  80         mz80fio = new MZ80FIO(this, emu);
  81 #endif
  82
  83         // set contexts
  84         event->set_context_cpu(cpu);
  85         event->set_context_sound(pcm);
  86         event->set_context_sound(drec);
  87
  88 #if defined(_MZ1200) || defined(_MZ80A)
  89         and_int->set_context_out(cpu, SIG_CPU_IRQ, 1);
  90         and_int->set_mask(SIG_AND_BIT_0 | SIG_AND_BIT_1);
  91 #endif
  92         drec->set_context_ear(pio, SIG_I8255_PORT_C, 0x20);
  93         drec->set_context_remote(pio, SIG_I8255_PORT_C, 0x10);
  94         ctc->set_context_ch0(counter, SIG_LS393_CLK, 1);
  95         ctc->set_context_ch1(ctc, SIG_I8253_CLOCK_2, 1);
  96 #if defined(_MZ1200) || defined(_MZ80A)
  97         ctc->set_context_ch2(and_int, SIG_AND_BIT_0, 1);
  98 #else
  99         ctc->set_context_ch2(cpu, SIG_CPU_IRQ, 1);
 100 #endif
 101         ctc->set_constant_clock(0, 2000000);
 102         ctc->set_constant_clock(1, 31250);
 103         pio->set_context_port_a(keyboard, SIG_KEYBOARD_COLUMN, 0x0f, 0);
 104         pio->set_context_port_c(memory, SIG_MEMORY_VGATE, 1, 0);
 105         pio->set_context_port_c(drec, SIG_DATAREC_MIC, 2, 0);
 106 #if defined(_MZ1200) || defined(_MZ80A)
 107         pio->set_context_port_c(and_int, SIG_AND_BIT_1, 4, 0);
 108 #endif
 109         pio->set_context_port_c(drec, SIG_DATAREC_TRIG, 8, 0);
 110         counter->set_context_1qa(pcm, SIG_PCM1BIT_SIGNAL, 1);
 111
 112         keyboard->set_context_pio(pio);
 113         memory->set_context_ctc(ctc);
 114         memory->set_context_pio(pio);
 115
 116 #if defined(SUPPORT_MZ80AIF)
 117         fdc->set_context_irq(memory, SIG_MEMORY_FDC_IRQ, 1);
 118         fdc->set_context_drq(memory, SIG_MEMORY_FDC_DRQ, 1);
 119         mz80aif->set_context_fdc(fdc);
 120 #elif defined(SUPPORT_MZ80FIO)
 121         mz80fio->set_context_fdc(fdc);
 122 #endif
 123
 124         // cpu bus
 125         cpu->set_context_mem(memory);
 126 #if defined(SUPPORT_MZ80AIF) || defined(SUPPORT_MZ80FIO)
 127         cpu->set_context_io(io);
 128 #else
 129         cpu->set_context_io(dummy);
 130 #endif
 131         cpu->set_context_intr(dummy);
 132 #ifdef USE_DEBUGGER
 133         cpu->set_context_debugger(new DEBUGGER(this, emu));
 134 #endif
 135
 136         // i/o bus
 137 #if defined(SUPPORT_MZ80AIF)
 138         io->set_iomap_range_rw(0xd8, 0xdb, fdc);
 139         io->set_iomap_range_w(0xdc, 0xdd, mz80aif);
 140 #elif defined(SUPPORT_MZ80FIO)
 141         io->set_iomap_range_rw(0xf8, 0xfb, mz80fio);
 142 #endif
 143
 144         // initialize all devices
 145         for(DEVICE* device = first_device; device; device = device->next_device) {
 146                 device->initialize();
 147         }
 148 #if defined(SUPPORT_MZ80AIF)
 149         for(int i = 0; i < MAX_DRIVE; i++) {
 150                 fdc->set_drive_type(i, DRIVE_TYPE_2DD);
 151         }
 152 #elif defined(SUPPORT_MZ80FIO)
 153         for(int i = 0; i < MAX_DRIVE; i++) {
 154                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 155 //              fdc->set_drive_mfm(i, false);
 156         }
 157 #endif
 158 }
 159
 160 VM::~VM()
 161 {
 162         // delete all devices
 163         for(DEVICE* device = first_device; device;) {
 164                 DEVICE *next_device = device->next_device;
 165                 device->release();
 166                 delete device;
 167                 device = next_device;
 168         }
 169 }
 170
 171 DEVICE* VM::get_device(int id)
 172 {
 173         for(DEVICE* device = first_device; device; device = device->next_device) {
 174                 if(device->this_device_id == id) {
 175                         return device;
 176                 }
 177         }
 178         return NULL;
 179 }
 180
 181 // ----------------------------------------------------------------------------
 182 // drive virtual machine
 183 // ----------------------------------------------------------------------------
 184
 185 void VM::reset()
 186 {
 187         // reset all devices
 188         for(DEVICE* device = first_device; device; device = device->next_device) {
 189                 device->reset();
 190         }
 191 #if defined(_MZ1200) || defined(_MZ80A)
 192         and_int->write_signal(SIG_AND_BIT_0, 0, 1);     // CLOCK = L
 193         and_int->write_signal(SIG_AND_BIT_1, 1, 1);     // INTMASK = H
 194 #endif
 195 }
 196
 197 void VM::run()
 198 {
 199         event->drive();
 200 }
 201
 202 // ----------------------------------------------------------------------------
 203 // debugger
 204 // ----------------------------------------------------------------------------
 205
 206 #ifdef USE_DEBUGGER
 207 DEVICE *VM::get_cpu(int index)
 208 {
 209         if(index == 0) {
 210                 return cpu;
 211         }
 212         return NULL;
 213 }
 214 #endif
 215
 216 // ----------------------------------------------------------------------------
 217 // draw screen
 218 // ----------------------------------------------------------------------------
 219
 220 void VM::draw_screen()
 221 {
 222         memory->draw_screen();
 223 }
 224
 225 #if defined(SUPPORT_MZ80AIF) || defined(SUPPORT_MZ80FIO)
 226 int VM::access_lamp()
 227 {
 228         uint32 status = fdc->read_signal(0);
 229         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 230 }
 231 #endif
 232
 233 // ----------------------------------------------------------------------------
 234 // soud manager
 235 // ----------------------------------------------------------------------------
 236
 237 void VM::initialize_sound(int rate, int samples)
 238 {
 239         // init sound manager
 240         event->initialize_sound(rate, samples);
 241
 242         // init sound gen
 243         pcm->init(rate, 8000);
 244 }
 245
 246 uint16* VM::create_sound(int* extra_frames)
 247 {
 248         return event->create_sound(extra_frames);
 249 }
 250
 251 int VM::sound_buffer_ptr()
 252 {
 253         return event->sound_buffer_ptr();
 254 }
 255
 256 #ifdef USE_SOUND_VOLUME
 257 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 258 {
 259         if(ch == 0) {
 260                 pcm->set_volume(0, decibel_l, decibel_r);
 261         } else if(ch == 1) {
 262                 drec->set_volume(0, decibel_l, decibel_r);
 263         }
 264 }
 265 #endif
 266
 267 // ----------------------------------------------------------------------------
 268 // notify key
 269 // ----------------------------------------------------------------------------
 270
 271 void VM::key_down(int code, bool repeat)
 272 {
 273         if(!repeat) {
 274                 keyboard->key_down(code);
 275         }
 276 }
 277
 278 void VM::key_up(int code)
 279 {
 280 //      keyboard->key_up(code);
 281 }
 282
 283 // ----------------------------------------------------------------------------
 284 // user interface
 285 // ----------------------------------------------------------------------------
 286
 287 #if defined(SUPPORT_MZ80AIF) || defined(SUPPORT_MZ80FIO)
 288 void VM::open_disk(int drv, const _TCHAR* file_path, int bank)
 289 {
 290         fdc->open_disk(drv, file_path, bank);
 291 }
 292
 293 void VM::close_disk(int drv)
 294 {
 295         fdc->close_disk(drv);
 296 }
 297
 298 bool VM::disk_inserted(int drv)
 299 {
 300         return fdc->disk_inserted(drv);
 301 }
 302
 303 void VM::set_disk_protected(int drv, bool value)
 304 {
 305         fdc->set_disk_protected(drv, value);
 306 }
 307
 308 bool VM::get_disk_protected(int drv)
 309 {
 310         return fdc->get_disk_protected(drv);
 311 }
 312
 313 #endif
 314
 315 void VM::play_tape(const _TCHAR* file_path)
 316 {
 317         drec->play_tape(file_path);
 318         drec->write_signal(SIG_DATAREC_REMOTE, 1, 1);
 319 }
 320
 321 void VM::rec_tape(const _TCHAR* file_path)
 322 {
 323         drec->rec_tape(file_path);
 324         drec->write_signal(SIG_DATAREC_REMOTE, 1, 1);
 325 }
 326
 327 void VM::close_tape()
 328 {
 329         drec->close_tape();
 330         drec->write_signal(SIG_DATAREC_REMOTE, 0, 0);
 331 }
 332
 333 bool VM::tape_inserted()
 334 {
 335         return drec->tape_inserted();
 336 }
 337
 338 bool VM::tape_playing()
 339 {
 340         return drec->tape_playing();
 341 }
 342
 343 bool VM::tape_recording()
 344 {
 345         return drec->tape_recording();
 346 }
 347
 348 int VM::tape_position()
 349 {
 350         return drec->tape_position();
 351 }
 352
 353 void VM::push_play()
 354 {
 355         drec->set_ff_rew(0);
 356         drec->set_remote(true);
 357 }
 358
 359 void VM::push_stop()
 360 {
 361         drec->set_remote(false);
 362 }
 363
 364 void VM::push_fast_forward()
 365 {
 366         drec->set_ff_rew(1);
 367         drec->set_remote(true);
 368 }
 369
 370 void VM::push_fast_rewind()
 371 {
 372         drec->set_ff_rew(-1);
 373         drec->set_remote(true);
 374 }
 375
 376 bool VM::now_skip()
 377 {
 378         return event->now_skip();
 379 }
 380
 381 void VM::update_config()
 382 {
 383         for(DEVICE* device = first_device; device; device = device->next_device) {
 384                 device->update_config();
 385         }
 386 }
 387
 388 #define STATE_VERSION   4
 389
 390 void VM::save_state(FILEIO* state_fio)
 391 {
 392         state_fio->FputUint32(STATE_VERSION);
 393
 394         for(DEVICE* device = first_device; device; device = device->next_device) {
 395                 device->save_state(state_fio);
 396         }
 397 }
 398
 399 bool VM::load_state(FILEIO* state_fio)
 400 {
 401         if(state_fio->FgetUint32() != STATE_VERSION) {
 402                 return false;
 403         }
 404         for(DEVICE* device = first_device; device; device = device->next_device) {
 405                 if(!device->load_state(state_fio)) {
 406                         return false;
 407                 }
 408         }
 409         return true;
 410 }
 411