source/src/vm/cefucom21/cefucom21.cpp

   1 /*
   2         Hino Electronics CEFUCOM-21 Emulator 'eCEFUCOM-21'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2019.03.28-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "cefucom21.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../ay_3_891x.h"
  16 #include "../datarec.h"
  17 #include "../i8255.h"
  18 #include "../io.h"
  19 #include "../mc6847.h"
  20 #include "../noise.h"
  21 #include "../memory.h"
  22 #include "../not.h"
  23 #include "../rp5c01.h"
  24 #include "../z80.h"
  25 #include "../z80ctc.h"
  26 #include "../z80pio.h"
  27
  28 #ifdef USE_DEBUGGER
  29 #include "../debugger.h"
  30 #endif
  31
  32 #include "mcu.h"
  33 #include "pcu.h"
  34
  35 //#define BOOT_BASIC
  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         mcu_psg = new AY_3_891X(this, emu);
  49 #ifdef USE_DEBUGGER
  50         mcu_psg->set_context_debugger(new DEBUGGER(this, emu));
  51 #endif
  52         mcu_drec = new DATAREC(this, emu);
  53         mcu_drec->set_context_noise_play(new NOISE(this, emu));
  54         mcu_drec->set_context_noise_stop(new NOISE(this, emu));
  55         mcu_drec->set_context_noise_fast(new NOISE(this, emu));
  56         mcu_io = new IO(this, emu);
  57         mcu_vdp = new MC6847(this, emu);
  58         mcu_mem = new MEMORY(this, emu);
  59
  60         mcu_not = new NOT(this, emu);
  61         mcu_cpu = new Z80(this, emu);
  62         mcu_pio = new Z80PIO(this, emu);
  63         mcu = new MCU(this, emu);
  64
  65         pcu_pio1 = new I8255(this, emu);
  66         pcu_pio2 = new I8255(this, emu);
  67         pcu_pio3 = new I8255(this, emu);
  68         pcu_io = new IO(this, emu);
  69         pcu_mem = new MEMORY(this, emu);
  70
  71         pcu_rtc = new RP5C01(this, emu);
  72         pcu_cpu = new Z80(this, emu);
  73         pcu_ctc1 = new Z80CTC(this, emu);
  74         pcu_ctc2 = new Z80CTC(this, emu);
  75         pcu_pio = new Z80PIO(this, emu);
  76         pcu = new PCU(this, emu);
  77
  78         // set contexts
  79         event->set_context_cpu(mcu_cpu);
  80         event->set_context_cpu(pcu_cpu);
  81         event->set_context_sound(mcu_psg);
  82         event->set_context_sound(mcu_drec);
  83         event->set_context_sound(mcu_drec->get_context_noise_play());
  84         event->set_context_sound(mcu_drec->get_context_noise_stop());
  85         event->set_context_sound(mcu_drec->get_context_noise_fast());
  86
  87         mcu_vdp->load_font_image(create_local_path(_T("FONT.ROM")));
  88         mcu_vdp->set_vram_ptr(vram, 0x1800);
  89 #ifdef BOOT_BASIC
  90         mcu_vdp->set_context_vsync(mcu_not, SIG_NOT_INPUT, 1);
  91         mcu_not->set_context_out(mcu_cpu, SIG_CPU_IRQ, 1);
  92 #endif
  93
  94         mcu_vdp->set_context_vsync(mcu, SIG_MCU_SYSPORT, 0x10);
  95         mcu_drec->set_context_ear(mcu, SIG_MCU_SYSPORT, 0x20);
  96         // bit6: printer busy
  97         mcu_vdp->set_context_hsync(mcu, SIG_MCU_SYSPORT, 0x80);
  98
  99 //      mcu_vdp->set_context_vsync(pcu_ctc1, SIG_Z80CTC_TRIG_1, 1);
 100 //      mcu_vdp->set_context_vsync(pcu_ctc2, SIG_Z80CTC_TRIG_1, 1);
 101         mcu_vdp->set_context_vsync(mcu_pio, SIG_Z80PIO_PORT_A, 0x40);
 102
 103         mcu_pio->set_context_port_a(pcu_pio, SIG_Z80PIO_PORT_A, 0x38, -3);
 104         mcu_pio->set_context_port_b(pcu_pio, SIG_Z80PIO_PORT_B, 0xff,  0);
 105         mcu_pio->set_context_ready_a(pcu_pio, SIG_Z80PIO_STROBE_A, 1);
 106         mcu_pio->set_context_ready_b(pcu_pio, SIG_Z80PIO_STROBE_B, 1);
 107         mcu_pio->set_hand_shake(0, true);
 108         mcu_pio->set_hand_shake(1, true);
 109
 110         mcu->set_context_drec(mcu_drec);
 111         mcu->set_context_psg(mcu_psg);
 112         mcu->set_context_vdp(mcu_vdp);
 113
 114         pcu_pio->set_context_port_a(mcu_pio, SIG_Z80PIO_PORT_A, 0x38, -3);
 115         pcu_pio->set_context_port_b(mcu_pio, SIG_Z80PIO_PORT_B, 0xff,  0);
 116         pcu_pio->set_context_ready_a(mcu_pio, SIG_Z80PIO_STROBE_A, 1);
 117         pcu_pio->set_context_ready_b(mcu_pio, SIG_Z80PIO_STROBE_B, 1);
 118         pcu_pio->set_hand_shake(0, true);
 119         pcu_pio->set_hand_shake(1, true);
 120
 121         // cpu bus
 122         mcu_cpu->set_context_mem(mcu_mem);
 123         mcu_cpu->set_context_io(mcu_io);
 124         mcu_cpu->set_context_intr(dummy);
 125 #ifdef USE_DEBUGGER
 126         mcu_cpu->set_context_debugger(new DEBUGGER(this, emu));
 127 #endif
 128
 129         pcu_cpu->set_context_mem(pcu_mem);
 130         pcu_cpu->set_context_io(pcu_io);
 131         pcu_cpu->set_context_intr(dummy);
 132 #ifdef USE_DEBUGGER
 133         pcu_cpu->set_context_debugger(new DEBUGGER(this, emu));
 134 #endif
 135
 136         // z80 family daisy chain
 137         DEVICE* parent_dev = NULL;
 138         int level = 0;
 139
 140         #define Z80_DAISY_CHAIN(cpu, dev) { \
 141                 if(parent_dev == NULL) { \
 142                         cpu->set_context_intr(dev); \
 143                 } else { \
 144                         parent_dev->set_context_child(dev); \
 145                 } \
 146                 dev->set_context_intr(cpu, level++); \
 147                 parent_dev = dev; \
 148         }
 149         Z80_DAISY_CHAIN(pcu_cpu, pcu_ctc1);
 150         Z80_DAISY_CHAIN(pcu_cpu, pcu_ctc2);
 151         Z80_DAISY_CHAIN(pcu_cpu, pcu_pio );
 152 #ifndef BOOT_BASIC
 153         parent_dev = NULL;
 154         Z80_DAISY_CHAIN(mcu_cpu, mcu_pio );
 155 #endif
 156
 157         // memory bus
 158         memset(mcu_rom, 0xff, sizeof(mcu_rom));
 159         memset(mcu_ram, 0x00, sizeof(mcu_ram));
 160         memset(pcu_rom, 0xff, sizeof(pcu_rom));
 161         memset(pcu_ram, 0x00, sizeof(pcu_ram));
 162
 163         memset(vram, 0x00, sizeof(vram));
 164         memset(cram, 0x00, sizeof(cram));
 165
 166         mcu_mem->read_bios(_T("BASIC.ROM"), mcu_rom, sizeof(mcu_rom));
 167 #ifdef BOOT_BASIC
 168         memset(mcu_rom + 0x7800, 0, 0x800);
 169 #else
 170 //      memset(mcu_rom, 0, 0x8000);
 171 #endif
 172         mcu_mem->set_memory_r (0x0000, 0x6fff, mcu_rom);
 173         mcu_mem->set_memory_rw(0x6000, 0x77ff, vram);
 174         mcu_mem->set_memory_r (0x7800, 0x7fff, mcu_rom + 0x7800);
 175 //      mcu_mem->set_memory_rw(0x8000, 0xffff, mcu_ram);
 176         mcu_mem->set_memory_rw(0x8000, 0xefff, mcu_ram);
 177         mcu_mem->set_memory_rw(0xf000, 0xffff, cram);
 178
 179         pcu_mem->read_bios(_T("MENU.ROM"), pcu_rom, sizeof(pcu_rom));
 180 #ifdef BOOT_BASIC
 181         memset(pcu_rom, 0, 0x8000);
 182 #endif
 183         pcu_mem->set_memory_r (0x0000, 0x7fff, pcu_rom);
 184         pcu_mem->set_memory_rw(0x8000, 0xffff, pcu_ram);
 185         pcu_mem->set_memory_rw(0xc000, 0xcfff, cram);
 186
 187         // i/o bus
 188         mcu_io->set_iomap_single_rw(0x40, mcu);
 189         mcu_io->set_iomap_range_r  (0x80, 0x89, mcu);
 190         mcu_io->set_iomap_alias_w  (0xc0, mcu_psg, 1);  // PSG data
 191         mcu_io->set_iomap_alias_w  (0xc1, mcu_psg, 0);  // PSG ch
 192 //      mcu_io->set_iomap_alias_r  (0xc0, mcu_psg, 1);
 193         mcu_io->set_iomap_alias_r  (0xc1, mcu_psg, 1);  // PSG data
 194         mcu_io->set_iomap_range_rw (0xe0, 0xe3, mcu_pio);
 195 #ifdef _IO_DEBUG_LOG
 196         pcu_io->cpu_index = 1;
 197 #endif
 198         pcu_io->set_iomap_range_rw (0x00, 0x03, pcu_ctc1);
 199         pcu_io->set_iomap_range_rw (0x08, 0x0b, pcu_ctc2);
 200         pcu_io->set_iomap_alias_rw (0x10, pcu_pio, 0);
 201         pcu_io->set_iomap_alias_rw (0x11, pcu_pio, 2);
 202         pcu_io->set_iomap_alias_rw (0x12, pcu_pio, 1);
 203         pcu_io->set_iomap_alias_rw (0x13, pcu_pio, 3);
 204         pcu_io->set_iomap_range_rw (0x20, 0x2f, pcu_rtc);
 205         pcu_io->set_iomap_range_rw (0x38, 0x39, pcu);
 206         pcu_io->set_iomap_range_rw (0x60, 0x63, pcu_pio1);
 207         pcu_io->set_iomap_range_rw (0x64, 0x67, pcu_pio2);
 208         pcu_io->set_iomap_range_rw (0x68, 0x6b, pcu_pio3);
 209
 210         // initialize all devices
 211         for(DEVICE* device = first_device; device; device = device->next_device) {
 212                 device->initialize();
 213         }
 214 }
 215
 216 VM::~VM()
 217 {
 218         // delete all devices
 219         for(DEVICE* device = first_device; device;) {
 220                 DEVICE *next_device = device->next_device;
 221                 device->release();
 222                 delete device;
 223                 device = next_device;
 224         }
 225 }
 226
 227 DEVICE* VM::get_device(int id)
 228 {
 229         for(DEVICE* device = first_device; device; device = device->next_device) {
 230                 if(device->this_device_id == id) {
 231                         return device;
 232                 }
 233         }
 234         return NULL;
 235 }
 236
 237 // ----------------------------------------------------------------------------
 238 // drive virtual machine
 239 // ----------------------------------------------------------------------------
 240
 241 void VM::reset()
 242 {
 243         // reset all devices
 244         for(DEVICE* device = first_device; device; device = device->next_device) {
 245                 device->reset();
 246         }
 247         mcu_vdp->write_signal(SIG_MC6847_GM,  6, 7);
 248         mcu_vdp->write_signal(SIG_MC6847_CSS, 0, 0);
 249         mcu_vdp->write_signal(SIG_MC6847_AG,  0, 0);
 250
 251 //      pcu_cpu->write_signal(SIG_CPU_BUSREQ, 1, 1);
 252 }
 253
 254 void VM::run()
 255 {
 256         event->drive();
 257 }
 258
 259 // ----------------------------------------------------------------------------
 260 // debugger
 261 // ----------------------------------------------------------------------------
 262
 263 #ifdef USE_DEBUGGER
 264 DEVICE *VM::get_cpu(int index)
 265 {
 266         if(index == 0) {
 267                 return mcu_cpu;
 268         } else if(index == 1) {
 269                 return pcu_cpu;
 270         }
 271         return NULL;
 272 }
 273 #endif
 274
 275 // ----------------------------------------------------------------------------
 276 // draw screen
 277 // ----------------------------------------------------------------------------
 278
 279 void VM::draw_screen()
 280 {
 281         mcu_vdp->draw_screen();
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // soud manager
 286 // ----------------------------------------------------------------------------
 287
 288 void VM::initialize_sound(int rate, int samples)
 289 {
 290         // init sound manager
 291         event->initialize_sound(rate, samples);
 292
 293         // init sound gen
 294         mcu_psg->initialize_sound(rate, 1996750, samples, 0, 0);
 295 }
 296
 297 uint16_t* VM::create_sound(int* extra_frames)
 298 {
 299         return event->create_sound(extra_frames);
 300 }
 301
 302 int VM::get_sound_buffer_ptr()
 303 {
 304         return event->get_sound_buffer_ptr();
 305 }
 306
 307 #ifdef USE_SOUND_VOLUME
 308 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 309 {
 310         if(ch == 0) {
 311                 mcu_psg->set_volume(1, decibel_l, decibel_r);
 312         } else if(ch == 1) {
 313                 mcu_drec->set_volume(0, decibel_l, decibel_r);
 314         } else if(ch == 2) {
 315                 mcu_drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 316                 mcu_drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 317                 mcu_drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 318         }
 319 }
 320 #endif
 321
 322 // ----------------------------------------------------------------------------
 323 // user interface
 324 // ----------------------------------------------------------------------------
 325
 326 void VM::play_tape(int drv, const _TCHAR* file_path)
 327 {
 328         bool remote = mcu_drec->get_remote();
 329
 330         if(mcu_drec->play_tape(file_path) && remote) {
 331                 // if machine already sets remote on, start playing now
 332                 push_play(drv);
 333         }
 334 }
 335
 336 void VM::rec_tape(int drv, const _TCHAR* file_path)
 337 {
 338         bool remote = mcu_drec->get_remote();
 339
 340         if(mcu_drec->rec_tape(file_path) && remote) {
 341                 // if machine already sets remote on, start recording now
 342                 push_play(drv);
 343         }
 344 }
 345
 346 void VM::close_tape(int drv)
 347 {
 348         emu->lock_vm();
 349         mcu_drec->close_tape();
 350         emu->unlock_vm();
 351         mcu_drec->set_remote(false);
 352 }
 353
 354 bool VM::is_tape_inserted(int drv)
 355 {
 356         return mcu_drec->is_tape_inserted();
 357 }
 358
 359 bool VM::is_tape_playing(int drv)
 360 {
 361         return mcu_drec->is_tape_playing();
 362 }
 363
 364 bool VM::is_tape_recording(int drv)
 365 {
 366         return mcu_drec->is_tape_recording();
 367 }
 368
 369 int VM::get_tape_position(int drv)
 370 {
 371         return mcu_drec->get_tape_position();
 372 }
 373
 374 const _TCHAR* VM::get_tape_message(int drv)
 375 {
 376         return mcu_drec->get_message();
 377 }
 378
 379 void VM::push_play(int drv)
 380 {
 381         mcu_drec->set_remote(false);
 382         mcu_drec->set_ff_rew(0);
 383         mcu_drec->set_remote(true);
 384 }
 385
 386 void VM::push_stop(int drv)
 387 {
 388         mcu_drec->set_remote(false);
 389 }
 390
 391 void VM::push_fast_forward(int drv)
 392 {
 393         mcu_drec->set_remote(false);
 394         mcu_drec->set_ff_rew(1);
 395         mcu_drec->set_remote(true);
 396 }
 397
 398 void VM::push_fast_rewind(int drv)
 399 {
 400         mcu_drec->set_remote(false);
 401         mcu_drec->set_ff_rew(-1);
 402         mcu_drec->set_remote(true);
 403 }
 404
 405 bool VM::is_frame_skippable()
 406 {
 407         return event->is_frame_skippable();
 408 }
 409
 410 void VM::update_config()
 411 {
 412         for(DEVICE* device = first_device; device; device = device->next_device) {
 413                 device->update_config();
 414         }
 415 }
 416
 417 #define STATE_VERSION   5
 418
 419 bool VM::process_state(FILEIO* state_fio, bool loading)
 420 {
 421         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 422                 return false;
 423         }
 424         for(DEVICE* device = first_device; device; device = device->next_device) {
 425                 const char *name = typeid(*device).name() + 6; // skip "class "
 426                 int len = strlen(name);
 427
 428                 if(!state_fio->StateCheckInt32(len)) {
 429                         return false;
 430                 }
 431                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 432                         return false;
 433                 }
 434                 if(!device->process_state(state_fio, loading)) {
 435                         return false;
 436                 }
 437         }
 438         return true;
 439 }
 440