source/src/vm/bubcom80/bubcom80.cpp

   1 /*
   2         Systems Formulate BUBCOM80 Emulator 'eBUBCOM80'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2018.05.08-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "bubcom80.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../disk.h"
  16 #include "../io.h"
  17 #include "../ls393.h"
  18 #include "../mb8877.h"
  19 #include "../mc6850.h"
  20 #include "../noise.h"
  21 #include "../pcm1bit.h"
  22 #include "../prnfile.h"
  23 #include "../z80.h"
  24 #include "../z80ctc.h"
  25
  26 #ifdef USE_DEBUGGER
  27 #include "../debugger.h"
  28 #endif
  29
  30 #include "bubblecasette.h"
  31 #include "cmt.h"
  32 #include "display.h"
  33 #include "floppy.h"
  34 #include "keyboard.h"
  35 #include "membus.h"
  36 #include "rtc.h"
  37
  38 // ----------------------------------------------------------------------------
  39 // initialize
  40 // ----------------------------------------------------------------------------
  41
  42 using BUBCOM80::BUBBLECASETTE;
  43 using BUBCOM80::CMT;
  44 using BUBCOM80::DISPLAY;
  45 using BUBCOM80::FLOPPY;
  46 using BUBCOM80::KEYBOARD;
  47 using BUBCOM80::MEMBUS;
  48 using BUBCOM80::RTC;
  49
  50 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  51 {
  52         // create devices
  53         first_device = last_device = NULL;
  54         dummy = new DEVICE(this, emu);  // must be 1st device
  55         event = new EVENT(this, emu);   // must be 2nd device
  56
  57         io = new IO(this, emu);
  58         flipflop = new LS393(this, emu);
  59         fdc = new MB8877(this, emu);
  60         fdc->set_context_noise_seek(new NOISE(this, emu));
  61         fdc->set_context_noise_head_down(new NOISE(this, emu));
  62         fdc->set_context_noise_head_up(new NOISE(this, emu));
  63 //      sio_rs = new MC6850(this, emu);
  64         sio_cmt = new MC6850(this, emu);
  65 //      sio_key = new MC6850(this, emu);
  66         pcm = new PCM1BIT(this, emu);
  67         cpu = new Z80(this, emu);
  68         ctc = new Z80CTC(this, emu);
  69
  70         bubblecasette[0] = new BUBBLECASETTE(this, emu);
  71         bubblecasette[1] = new BUBBLECASETTE(this, emu);
  72         cmt = new CMT(this, emu);
  73         if(config.printer_type == 0) {
  74                 printer = new PRNFILE(this, emu);
  75 //      } else if(config.printer_type == 1) {
  76 //              printer = new BC861(this, emu);
  77         } else {
  78                 printer = dummy;
  79         }
  80         display = new DISPLAY(this, emu);
  81         floppy = new FLOPPY(this, emu);
  82         keyboard = new KEYBOARD(this, emu);
  83         membus = new MEMBUS(this, emu);
  84         rtc = new RTC(this, emu);
  85
  86         // set contexts
  87         event->set_context_cpu(cpu);
  88         event->set_context_sound(pcm);
  89         event->set_context_sound(fdc->get_context_noise_seek());
  90         event->set_context_sound(fdc->get_context_noise_head_down());
  91         event->set_context_sound(fdc->get_context_noise_head_up());
  92
  93         flipflop->set_context_1qa(pcm, SIG_PCM1BIT_SIGNAL, 1);
  94         fdc->set_context_drq(display, SIG_DISPLAY_DMAC_CH0, 1);
  95         sio_cmt->set_context_out(cmt, SIG_CMT_OUT);
  96         ctc->set_context_zc0(flipflop, SIG_LS393_CLK, 1);
  97         ctc->set_constant_clock(0, CPU_CLOCKS);
  98         ctc->set_constant_clock(1, CPU_CLOCKS);
  99         ctc->set_constant_clock(2, CPU_CLOCKS);
 100
 101         cmt->set_context_sio(sio_cmt);
 102         display->set_context_cpu(cpu);
 103         display->set_context_cmt(cmt);
 104         display->set_context_pcm(pcm);
 105         display->set_context_prn(printer);
 106         display->set_context_dmac_mem(membus);
 107         display->set_context_dmac_ch0(fdc);
 108         display->set_context_dmac_ch2(display); // crtc
 109         floppy->set_context_fdc(floppy);
 110
 111         // cpu bus
 112         cpu->set_context_mem(membus);
 113         cpu->set_context_io(io);
 114         cpu->set_context_intr(ctc);
 115 #ifdef USE_DEBUGGER
 116         cpu->set_context_debugger(new DEBUGGER(this, emu));
 117 #endif
 118
 119         // z80 family daisy chain
 120         ctc->set_context_intr(cpu, 0);
 121
 122         // i/o bus
 123         io->set_iomap_range_rw(0x0000, 0x0008, bubblecasette[0]);
 124         io->set_iomap_range_rw(0x000c, 0x000d, membus);
 125         io->set_iomap_range_rw(0x0010, 0x0011, display);
 126         io->set_iomap_single_rw(0x0020, display);
 127         io->set_iomap_range_rw(0x0030, 0x0031, sio_cmt);
 128         io->set_iomap_range_rw(0x0040, 0x0043, ctc);
 129         io->set_iomap_single_rw(0x0050, display);
 130         io->set_iomap_range_rw(0x0060, 0x0068, display);
 131         io->set_iomap_single_w(0x0080, membus);
 132         io->set_iomap_range_r(0x0400, 0x047f, keyboard);
 133         io->set_iomap_range_rw(0x0800, 0x0fff, display);
 134         io->set_iomap_range_rw(0x3fd0, 0x3fd3, fdc);
 135         io->set_iomap_single_w(0x3fd8, floppy);
 136         io->set_iomap_range_rw(0x3fe0, 0x3fed, rtc);
 137         io->set_iomap_single_rw(0x3ff0, display);
 138         io->set_iomap_range_rw(0x4000, 0xffff, display);
 139
 140         // initialize all devices
 141 #if defined(__GIT_REPO_VERSION)
 142         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 143 #endif
 144         for(DEVICE* device = first_device; device; device = device->next_device) {
 145                 device->initialize();
 146         }
 147
 148         for(int i = 0; i < MAX_DRIVE; i++) {
 149                 fdc->set_drive_type(i, DRIVE_TYPE_2HD); // 8inch 2D
 150         }
 151         fdc->write_signal(SIG_MB8877_MOTOR, 1, 1);
 152 }
 153
 154 VM::~VM()
 155 {
 156         // delete all devices
 157         for(DEVICE* device = first_device; device;) {
 158                 DEVICE *next_device = device->next_device;
 159                 device->release();
 160                 delete device;
 161                 device = next_device;
 162         }
 163 }
 164
 165 DEVICE* VM::get_device(int id)
 166 {
 167         for(DEVICE* device = first_device; device; device = device->next_device) {
 168                 if(device->this_device_id == id) {
 169                         return device;
 170                 }
 171         }
 172         return NULL;
 173 }
 174
 175 // ----------------------------------------------------------------------------
 176 // drive virtual machine
 177 // ----------------------------------------------------------------------------
 178
 179 void VM::reset()
 180 {
 181         // reset all devices
 182         for(DEVICE* device = first_device; device; device = device->next_device) {
 183                 device->reset();
 184         }
 185         ctc->write_io8(0, 0x07); // default frequency for beep
 186         ctc->write_io8(0, 0xef);
 187         pcm->write_signal(SIG_PCM1BIT_ON, 0, 0); // beep off
 188 }
 189
 190 void VM::run()
 191 {
 192         event->drive();
 193 }
 194
 195 double VM::get_frame_rate()
 196 {
 197         return event->get_frame_rate();
 198 }
 199
 200 // ----------------------------------------------------------------------------
 201 // debugger
 202 // ----------------------------------------------------------------------------
 203
 204 #ifdef USE_DEBUGGER
 205 DEVICE *VM::get_cpu(int index)
 206 {
 207         if(index == 0) {
 208                 return cpu;
 209         }
 210         return NULL;
 211 }
 212 #endif
 213
 214 // ----------------------------------------------------------------------------
 215 // draw screen
 216 // ----------------------------------------------------------------------------
 217
 218 void VM::draw_screen()
 219 {
 220         display->draw_screen();
 221 }
 222
 223 // ----------------------------------------------------------------------------
 224 // soud manager
 225 // ----------------------------------------------------------------------------
 226
 227 void VM::initialize_sound(int rate, int samples)
 228 {
 229         // init sound manager
 230         event->initialize_sound(rate, samples);
 231
 232         // init sound gen
 233         pcm->initialize_sound(rate, 8000);
 234 }
 235
 236 uint16_t* VM::create_sound(int* extra_frames)
 237 {
 238         return event->create_sound(extra_frames);
 239 }
 240
 241 int VM::get_sound_buffer_ptr()
 242 {
 243         return event->get_sound_buffer_ptr();
 244 }
 245
 246 #ifdef USE_SOUND_VOLUME
 247 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 248 {
 249         if(ch == 0) {
 250                 pcm->set_volume(0, decibel_l, decibel_r);
 251         } else if(ch == 1) {
 252                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 253                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 254                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 255         }
 256 }
 257 #endif
 258
 259 // ----------------------------------------------------------------------------
 260 // user interface
 261 // ----------------------------------------------------------------------------
 262
 263 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 264 {
 265         fdc->open_disk(drv, file_path, bank);
 266 }
 267
 268 void VM::close_floppy_disk(int drv)
 269 {
 270         fdc->close_disk(drv);
 271 }
 272
 273 bool VM::is_floppy_disk_inserted(int drv)
 274 {
 275         return fdc->is_disk_inserted(drv);
 276 }
 277
 278 void VM::is_floppy_disk_protected(int drv, bool value)
 279 {
 280         fdc->is_disk_protected(drv, value);
 281 }
 282
 283 bool VM::is_floppy_disk_protected(int drv)
 284 {
 285         return fdc->is_disk_protected(drv);
 286 }
 287
 288 uint32_t VM::is_floppy_disk_accessed()
 289 {
 290         return fdc->read_signal(0);
 291 }
 292
 293 void VM::play_tape(int drv, const _TCHAR* file_path)
 294 {
 295         cmt->play_tape(file_path);
 296 }
 297
 298 void VM::rec_tape(int drv, const _TCHAR* file_path)
 299 {
 300         cmt->rec_tape(file_path);
 301 }
 302
 303 void VM::close_tape(int drv)
 304 {
 305         cmt->close_tape();
 306 }
 307
 308 bool VM::is_tape_inserted(int drv)
 309 {
 310         return cmt->is_tape_inserted();
 311 }
 312
 313 void VM::open_bubble_casette(int drv, const _TCHAR *path, int bank)
 314 {
 315         if(drv < 2 && bubblecasette[drv] != NULL) {
 316                 bubblecasette[drv]->open((_TCHAR *)path, bank);
 317         }
 318 }
 319
 320 void VM::close_bubble_casette(int drv)
 321 {
 322         if(drv < 2 && bubblecasette[drv] != NULL) {
 323                 bubblecasette[drv]->close();
 324         }
 325 }
 326
 327 bool VM::is_bubble_casette_inserted(int drv)
 328 {
 329         if(drv < 2 && bubblecasette[drv] != NULL) {
 330                 return bubblecasette[drv]->is_bubble_inserted();
 331         }
 332         return false;
 333 }
 334
 335 bool VM::is_bubble_casette_protected(int drv)
 336 {
 337         if(drv < 2 && bubblecasette[drv] != NULL) {
 338                 return bubblecasette[drv]->is_bubble_protected();
 339         }
 340         return false;
 341 }
 342
 343 void VM::is_bubble_casette_protected(int drv, bool flag)
 344 {
 345         if(drv < 2 && bubblecasette[drv] != NULL) {
 346                 bubblecasette[drv]->set_bubble_protect(flag);
 347         }
 348 }
 349
 350 bool VM::is_frame_skippable()
 351 {
 352         return event->is_frame_skippable();
 353 }
 354
 355 void VM::update_config()
 356 {
 357         for(DEVICE* device = first_device; device; device = device->next_device) {
 358                 device->update_config();
 359         }
 360 }
 361
 362 #define STATE_VERSION   1
 363
 364 bool VM::process_state(FILEIO* state_fio, bool loading)
 365 {
 366         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 367                 return false;
 368         }
 369         for(DEVICE* device = first_device; device; device = device->next_device) {
 370                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 371                 // const char *name = typeid(*device).name();
 372                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 373                 const char *name = device->get_device_name();
 374                 int len = strlen(name);
 375
 376                 if(!state_fio->StateCheckInt32(len)) {
 377                         if(loading) {
 378                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 379                         }
 380                         return false;
 381                 }
 382                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 383                         if(loading) {
 384                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 385                         }
 386                         return false;
 387                 }
 388                 if(!device->process_state(state_fio, loading)) {
 389                         if(loading) {
 390                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 391                         }
 392                         return false;
 393                 }
 394         }
 395         // Machine specified.
 396         if(loading) {
 397                 update_config();
 398         }
 399         //mainio->restore_opn();
 400         return true;
 401 }