source/src/vm/mz3500/mz3500.cpp

   1 /*
   2         SHARP MZ-3500 Emulator 'EmuZ-3500'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2010.08.31-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "mz3500.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../disk.h"
  16 #include "../i8251.h"
  17 #include "../i8253.h"
  18 #include "../i8255.h"
  19 #include "../io.h"
  20 #include "../ls244.h"
  21 #include "../mz1p17.h"
  22 #include "../noise.h"
  23 #include "../not.h"
  24 #include "../pcm1bit.h"
  25 #include "../prnfile.h"
  26 #include "../upd1990a.h"
  27 #include "../upd7220.h"
  28 #include "../upd765a.h"
  29 #include "../z80.h"
  30
  31 #ifdef USE_DEBUGGER
  32 #include "../debugger.h"
  33 #endif
  34
  35 #include "./main.h"
  36 #include "./sub.h"
  37 #include "keyboard.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // initialize
  41 // ----------------------------------------------------------------------------
  42
  43 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  44 {
  45         // create devices
  46         first_device = last_device = NULL;
  47         dummy = new DEVICE(this, emu);  // must be 1st device
  48         event = new EVENT(this, emu);   // must be 2nd device
  49         dummy->set_device_name(_T("1st Dummy"));
  50
  51         // for main cpu
  52         mainio = new IO(this, emu);
  53         fdc = new UPD765A(this, emu);
  54         fdc->set_context_noise_seek(new NOISE(this, emu));
  55         fdc->set_context_noise_head_down(new NOISE(this, emu));
  56         fdc->set_context_noise_head_up(new NOISE(this, emu));
  57         maincpu = new Z80(this, emu);
  58         mainbus= new MAIN(this, emu);
  59         mainio->set_device_name(_T("I/O Bus (Main)"));
  60         maincpu->set_device_name(_T("Z80 CPU (Main)"));
  61         mainbus->set_device_name(_T("MAIN BUS"));
  62         // for sub cpu
  63         if(config.printer_type == 0) {
  64                 printer = new PRNFILE(this, emu);
  65         } else if(config.printer_type == 1) {
  66                 printer = new MZ1P17(this, emu);
  67         } else {
  68                 printer = dummy;
  69         }
  70         sio = new I8251(this, emu);
  71         pit = new I8253(this, emu);
  72         pio = new I8255(this, emu);
  73         subio = new IO(this, emu);
  74         subio->set_device_name(_T("I/O Bus (Sub)"));
  75         ls244 = new LS244(this, emu);
  76         not_data0 = new NOT(this, emu);
  77         not_data0->set_device_name(_T("NOT Gate (Printer Bit0)"));
  78         not_data1 = new NOT(this, emu);
  79         not_data1->set_device_name(_T("NOT Gate (Printer Bit1)"));
  80         not_data2 = new NOT(this, emu);
  81         not_data2->set_device_name(_T("NOT Gate (Printer Bit2)"));
  82         not_data3 = new NOT(this, emu);
  83         not_data3->set_device_name(_T("NOT Gate (Printer Bit3)"));
  84         not_data4 = new NOT(this, emu);
  85         not_data4->set_device_name(_T("NOT Gate (Printer Bit4)"));
  86         not_data5 = new NOT(this, emu);
  87         not_data5->set_device_name(_T("NOT Gate (Printer Bit5)"));
  88         not_data6 = new NOT(this, emu);
  89         not_data6->set_device_name(_T("NOT Gate (Printer Bit6)"));
  90         not_data7 = new NOT(this, emu);
  91         not_data7->set_device_name(_T("NOT Gate (Printer Bit7)"));
  92         not_busy = new NOT(this, emu);
  93         not_busy->set_device_name(_T("NOT Gate (Printer Busy)"));
  94         pcm = new PCM1BIT(this, emu);
  95         rtc = new UPD1990A(this, emu);
  96         gdc_chr = new UPD7220(this, emu);
  97         gdc_chr->set_device_name(_T("uPD7220 GDC (Character)"));
  98         gdc_gfx = new UPD7220(this, emu);
  99         gdc_gfx->set_device_name(_T("uPD7220 GDC (Graphics)"));
 100         subcpu = new Z80(this, emu);
 101         subcpu->set_device_name(_T("Z80 CPU (Sub)"));
 102         subbus = new SUB(this, emu);
 103         kbd = new KEYBOARD(this, emu);
 104
 105         // set contexts
 106         event->set_context_cpu(maincpu, CPU_CLOCKS);
 107         event->set_context_cpu(subcpu, CPU_CLOCKS);
 108         event->set_context_sound(pcm);
 109         event->set_context_sound(fdc->get_context_noise_seek());
 110         event->set_context_sound(fdc->get_context_noise_head_down());
 111         event->set_context_sound(fdc->get_context_noise_head_up());
 112
 113         // mz3500sm p.59
 114         fdc->set_context_irq(mainbus, SIG_MAIN_INTFD, 1);
 115         fdc->set_context_drq(mainbus, SIG_MAIN_DRQ, 1);
 116         fdc->set_context_index(mainbus, SIG_MAIN_INDEX, 1);
 117
 118         // mz3500sm p.78
 119         if(config.printer_type == 0) {
 120                 PRNFILE *prnfile = (PRNFILE *)printer;
 121                 prnfile->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 122                 prnfile->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 123         } else if(config.printer_type == 1) {
 124                 MZ1P17 *mz1p17 = (MZ1P17 *)printer;
 125                 mz1p17->mode = MZ1P17_MODE_MZ1;
 126                 mz1p17->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 127                 mz1p17->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 128
 129                 // sw1=on, sw2=off, select MZ-1P02 (mz3500sm p.85)
 130                 config.dipswitch &= ~0x03;
 131                 config.dipswitch |=  0x01;
 132         }
 133
 134         // mz3500sm p.72,77
 135         sio->set_context_rxrdy(subcpu, SIG_CPU_NMI, 1);
 136
 137         // mz3500sm p.77,83
 138         // i8253 ch.0 -> i8251 txc,rxc
 139         pit->set_context_ch1(pcm, SIG_PCM1BIT_SIGNAL, 1);
 140         pit->set_context_ch2(pit, SIG_I8253_GATE_1, 1);
 141         pit->set_constant_clock(0, 2450760);
 142         pit->set_constant_clock(1, 2450760);
 143         pit->set_constant_clock(2, 2450760);
 144
 145         // mz3500sm p.78,80,81
 146         pio->set_context_port_a(not_data0, SIG_NOT_INPUT, 0x01, 0);
 147         pio->set_context_port_a(not_data1, SIG_NOT_INPUT, 0x02, 0);
 148         pio->set_context_port_a(not_data2, SIG_NOT_INPUT, 0x04, 0);
 149         pio->set_context_port_a(not_data3, SIG_NOT_INPUT, 0x08, 0);
 150         pio->set_context_port_a(not_data4, SIG_NOT_INPUT, 0x10, 0);
 151         pio->set_context_port_a(not_data5, SIG_NOT_INPUT, 0x20, 0);
 152         pio->set_context_port_a(not_data6, SIG_NOT_INPUT, 0x40, 0);
 153         pio->set_context_port_a(not_data7, SIG_NOT_INPUT, 0x80, 0);
 154         pio->set_context_port_b(rtc, SIG_UPD1990A_STB, 0x01, 0);
 155         pio->set_context_port_b(rtc, SIG_UPD1990A_C0,  0x02, 0);
 156         pio->set_context_port_b(rtc, SIG_UPD1990A_C1,  0x04, 0);
 157         pio->set_context_port_b(rtc, SIG_UPD1990A_C2,  0x08, 0);
 158         pio->set_context_port_b(rtc, SIG_UPD1990A_DIN, 0x10, 0);
 159         pio->set_context_port_b(rtc, SIG_UPD1990A_CLK, 0x20, 0);
 160         pio->set_context_port_b(mainbus, SIG_MAIN_SRDY, 0x40, 0);
 161 //      pio->set_context_port_b(subbus, SIG_SUB_PIO_PM, 0x80, 0);       // P/M: CG Selection
 162         pio->set_context_port_c(kbd, SIG_KEYBOARD_DC, 0x01, 0);
 163         pio->set_context_port_c(kbd, SIG_KEYBOARD_STC, 0x02, 0);
 164         pio->set_context_port_c(kbd, SIG_KEYBOARD_ACKC, 0x04, 0);
 165         // i8255 pc3 <- intr (not use ???)
 166         pio->set_context_port_c(pcm, SIG_PCM1BIT_MUTE, 0x10, 0);
 167         pio->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x20, 0);
 168         // i8255 pc6 <- printer ack
 169         pio->set_context_port_c(ls244, SIG_LS244_INPUT, 0x80, -6);
 170
 171         // mz3500sm p.78
 172         not_data0->set_context_out(printer, SIG_PRINTER_DATA, 0x01);
 173         not_data1->set_context_out(printer, SIG_PRINTER_DATA, 0x02);
 174         not_data2->set_context_out(printer, SIG_PRINTER_DATA, 0x04);
 175         not_data3->set_context_out(printer, SIG_PRINTER_DATA, 0x08);
 176         not_data4->set_context_out(printer, SIG_PRINTER_DATA, 0x10);
 177         not_data5->set_context_out(printer, SIG_PRINTER_DATA, 0x20);
 178         not_data6->set_context_out(printer, SIG_PRINTER_DATA, 0x40);
 179         not_data7->set_context_out(printer, SIG_PRINTER_DATA, 0x80);
 180         not_busy->set_context_out(ls244, SIG_LS244_INPUT, 0x04);
 181
 182         // mz3500sm p.80,81
 183         rtc->set_context_dout(ls244, SIG_LS244_INPUT, 0x01);
 184
 185         gdc_chr->set_vram_ptr(subbus->get_vram_chr(), 0x2000, 0xfff);
 186         subbus->set_sync_ptr_chr(gdc_chr->get_sync());
 187         subbus->set_ra_ptr_chr(gdc_chr->get_ra());
 188         subbus->set_cs_ptr_chr(gdc_chr->get_cs());
 189         subbus->set_ead_ptr_chr(gdc_chr->get_ead());
 190
 191         gdc_gfx->set_vram_ptr(subbus->get_vram_gfx(), 0x18000);
 192         subbus->set_sync_ptr_gfx(gdc_gfx->get_sync());
 193         subbus->set_ra_ptr_gfx(gdc_gfx->get_ra());
 194         subbus->set_cs_ptr_gfx(gdc_gfx->get_cs());
 195         subbus->set_ead_ptr_gfx(gdc_gfx->get_ead());
 196
 197         kbd->set_context_subcpu(subcpu);
 198         kbd->set_context_ls244(ls244);
 199
 200         // mz3500sm p.23
 201         subcpu->set_context_busack(mainbus, SIG_MAIN_SACK, 1);
 202
 203         mainbus->set_context_maincpu(maincpu);
 204         mainbus->set_context_subcpu(subcpu);
 205         mainbus->set_context_fdc(fdc);
 206
 207         subbus->set_context_main(mainbus);
 208         subbus->set_ipl(mainbus->get_ipl());
 209         subbus->set_common(mainbus->get_common());
 210
 211         // mz3500sm p.17
 212         mainio->set_iomap_range_rw(0xec, 0xef, mainbus);        // reset int0
 213         mainio->set_iomap_range_rw(0xf4, 0xf7, fdc);            // fdc: f4h,f6h = status, f5h,f7h = data
 214         mainio->set_iomap_range_rw(0xf8, 0xfb, mainbus);        // mfd interface
 215         mainio->set_iomap_range_rw(0xfc, 0xff, mainbus);        // memory mpaper
 216
 217         // mz3500sm p.18
 218         subio->set_iomap_range_w(0x00, 0x0f, subbus);           // int0 to main (set flipflop)
 219         subio->set_iomap_range_rw(0x10, 0x1f, sio);
 220         subio->set_iomap_range_rw(0x20, 0x2f, pit);
 221         subio->set_iomap_range_rw(0x30, 0x3f, pio);
 222         subio->set_iomap_range_r(0x40, 0x4f, ls244);            // input port
 223         subio->set_iomap_range_rw(0x50, 0x5f, subbus);          // crt control i/o
 224         subio->set_iomap_range_rw(0x60, 0x6f, gdc_gfx);
 225         subio->set_iomap_range_rw(0x70, 0x7f, gdc_chr);
 226 #ifdef _IO_DEBUG_LOG
 227         subio->cpu_index = 1;
 228 #endif
 229
 230         // cpu bus
 231         maincpu->set_context_mem(mainbus);
 232         maincpu->set_context_io(mainio);
 233         maincpu->set_context_intr(mainbus);
 234 #ifdef USE_DEBUGGER
 235         maincpu->set_context_debugger(new DEBUGGER(this, emu));
 236 #endif
 237
 238         subcpu->set_context_mem(subbus);
 239         subcpu->set_context_io(subio);
 240         subcpu->set_context_intr(subbus);
 241 #ifdef USE_DEBUGGER
 242         subcpu->set_context_debugger(new DEBUGGER(this, emu));
 243 #endif
 244
 245         // initialize all devices
 246         for(DEVICE* device = first_device; device; device = device->next_device) {
 247                 device->initialize();
 248         }
 249         decl_state();
 250         for(int i = 0; i < 4; i++) {
 251                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 252         }
 253         // GDC clock (mz3500sm p.33,34)
 254         if(config.monitor_type == 0 || config.monitor_type == 1) {
 255                 gdc_chr->set_horiz_freq(20920);
 256                 gdc_gfx->set_horiz_freq(20920);
 257         } else {
 258                 gdc_chr->set_horiz_freq(15870);
 259                 gdc_gfx->set_horiz_freq(15870);
 260         }
 261 }
 262
 263 VM::~VM()
 264 {
 265         // delete all devices
 266         for(DEVICE* device = first_device; device;) {
 267                 DEVICE *next_device = device->next_device;
 268                 device->release();
 269                 delete device;
 270                 device = next_device;
 271         }
 272 }
 273
 274 DEVICE* VM::get_device(int id)
 275 {
 276         for(DEVICE* device = first_device; device; device = device->next_device) {
 277                 if(device->this_device_id == id) {
 278                         return device;
 279                 }
 280         }
 281         return NULL;
 282 }
 283
 284 // ----------------------------------------------------------------------------
 285 // drive virtual machine
 286 // ----------------------------------------------------------------------------
 287
 288 void VM::reset()
 289 {
 290         // reset all devices
 291         for(DEVICE* device = first_device; device; device = device->next_device) {
 292                 device->reset();
 293         }
 294
 295         // set busreq of sub cpu
 296         subcpu->write_signal(SIG_CPU_BUSREQ, 1, 1);
 297
 298         // halt key is not pressed (mz3500sm p.80)
 299         halt = 0;
 300         ls244->write_signal(SIG_LS244_INPUT, 0x80, 0xff);
 301
 302         // set printer signal (mz3500sm p.78)
 303         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 304         ls244->write_signal(SIG_LS244_INPUT, 0x1c, 0x1c);       // busy = ~(low), pe = ~(low), pdtr = high
 305         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 306 }
 307
 308 void VM::special_reset()
 309 {
 310         // halt key is pressed (mz3500sm p.80)
 311         halt = 8;
 312         ls244->write_signal(SIG_LS244_INPUT, 0x00, 0x80);
 313 }
 314
 315 void VM::run()
 316 {
 317         // halt key is released (mz3500sm p.80)
 318         if(halt != 0 && --halt == 0) {
 319                 ls244->write_signal(SIG_LS244_INPUT, 0x80, 0x80);
 320         }
 321         event->drive();
 322 }
 323
 324 double VM::get_frame_rate()
 325 {
 326         return event->get_frame_rate();
 327 }
 328
 329 // ----------------------------------------------------------------------------
 330 // debugger
 331 // ----------------------------------------------------------------------------
 332
 333 #ifdef USE_DEBUGGER
 334 DEVICE *VM::get_cpu(int index)
 335 {
 336         if(index == 0) {
 337                 return maincpu;
 338         } else if(index == 1) {
 339                 return subcpu;
 340         }
 341         return NULL;
 342 }
 343 #endif
 344
 345 // ----------------------------------------------------------------------------
 346 // draw screen
 347 // ----------------------------------------------------------------------------
 348
 349 void VM::draw_screen()
 350 {
 351         subbus->draw_screen();
 352 }
 353
 354 // ----------------------------------------------------------------------------
 355 // soud manager
 356 // ----------------------------------------------------------------------------
 357
 358 void VM::initialize_sound(int rate, int samples)
 359 {
 360         // init sound manager
 361         event->initialize_sound(rate, samples);
 362
 363         // init sound gen
 364         pcm->initialize_sound(rate, 8000);
 365 }
 366
 367 uint16_t* VM::create_sound(int* extra_frames)
 368 {
 369         return event->create_sound(extra_frames);
 370 }
 371
 372 int VM::get_sound_buffer_ptr()
 373 {
 374         return event->get_sound_buffer_ptr();
 375 }
 376
 377 #ifdef USE_SOUND_VOLUME
 378 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 379 {
 380         if(ch == 0) {
 381                 pcm->set_volume(0, decibel_l, decibel_r);
 382         } else if(ch == 1) {
 383                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 384                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 385                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 386         }
 387 }
 388 #endif
 389
 390 // ----------------------------------------------------------------------------
 391 // notify key
 392 // ----------------------------------------------------------------------------
 393
 394 void VM::key_down(int code, bool repeat)
 395 {
 396         kbd->key_down(code);
 397 }
 398
 399 void VM::key_up(int code)
 400 {
 401         kbd->key_up(code);
 402 }
 403
 404 bool VM::get_caps_locked()
 405 {
 406         return kbd->get_caps_locked();
 407 }
 408
 409 bool VM::get_kana_locked()
 410 {
 411         return kbd->get_kana_locked();
 412 }
 413
 414 // ----------------------------------------------------------------------------
 415 // user interface
 416 // ----------------------------------------------------------------------------
 417
 418 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 419 {
 420         fdc->open_disk(drv, file_path, bank);
 421 }
 422
 423 void VM::close_floppy_disk(int drv)
 424 {
 425         fdc->close_disk(drv);
 426 }
 427
 428 bool VM::is_floppy_disk_inserted(int drv)
 429 {
 430         return fdc->is_disk_inserted(drv);
 431 }
 432
 433 void VM::is_floppy_disk_protected(int drv, bool value)
 434 {
 435         fdc->is_disk_protected(drv, value);
 436 }
 437
 438 bool VM::is_floppy_disk_protected(int drv)
 439 {
 440         return fdc->is_disk_protected(drv);
 441 }
 442
 443 uint32_t VM::is_floppy_disk_accessed()
 444 {
 445         return fdc->read_signal(0);
 446 }
 447
 448 bool VM::is_frame_skippable()
 449 {
 450         return event->is_frame_skippable();
 451 }
 452
 453 void VM::update_config()
 454 {
 455         for(DEVICE* device = first_device; device; device = device->next_device) {
 456                 device->update_config();
 457         }
 458 }
 459
 460 #define STATE_VERSION   5
 461
 462 #include "../../statesub.h"
 463 #include "../../qt/gui/csp_logger.h"
 464 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 465
 466 void VM::decl_state(void)
 467 {
 468         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::MZ_3500_HEAD")), csp_logger);
 469         DECL_STATE_ENTRY_UINT8(halt);
 470
 471         for(DEVICE* device = first_device; device; device = device->next_device) {
 472                 device->decl_state();
 473         }
 474 }
 475
 476 void VM::save_state(FILEIO* state_fio)
 477 {
 478         //state_fio->FputUint32(STATE_VERSION);
 479
 480         if(state_entry != NULL) {
 481                 state_entry->save_state(state_fio);
 482         }
 483         for(DEVICE* device = first_device; device; device = device->next_device) {
 484                 device->save_state(state_fio);
 485         }
 486         //state_fio->FputUint8(halt);
 487 }
 488
 489 bool VM::load_state(FILEIO* state_fio)
 490 {
 491         //if(state_fio->FgetUint32() != STATE_VERSION) {
 492         //      return false;
 493         //}
 494         bool mb = false;
 495         if(state_entry != NULL) {
 496                 mb = state_entry->load_state(state_fio);
 497         }
 498         if(!mb) {
 499                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 500                 return false;
 501         }
 502         for(DEVICE* device = first_device; device; device = device->next_device) {
 503                 if(!device->load_state(state_fio)) {
 504                         return false;
 505                 }
 506         }
 507         //halt = state_fio->FgetUint8();
 508         return true;
 509 }
 510