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 #if defined(__GIT_REPO_VERSION)
 247         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 248 #endif
 249         for(DEVICE* device = first_device; device; device = device->next_device) {
 250                 device->initialize();
 251         }
 252         for(int i = 0; i < 4; i++) {
 253                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 254         }
 255         // GDC clock (mz3500sm p.33,34)
 256         if(config.monitor_type == 0 || config.monitor_type == 1) {
 257                 gdc_chr->set_horiz_freq(20920);
 258                 gdc_gfx->set_horiz_freq(20920);
 259         } else {
 260                 gdc_chr->set_horiz_freq(15870);
 261                 gdc_gfx->set_horiz_freq(15870);
 262         }
 263 }
 264
 265 VM::~VM()
 266 {
 267         // delete all devices
 268         for(DEVICE* device = first_device; device;) {
 269                 DEVICE *next_device = device->next_device;
 270                 device->release();
 271                 delete device;
 272                 device = next_device;
 273         }
 274 }
 275
 276 DEVICE* VM::get_device(int id)
 277 {
 278         for(DEVICE* device = first_device; device; device = device->next_device) {
 279                 if(device->this_device_id == id) {
 280                         return device;
 281                 }
 282         }
 283         return NULL;
 284 }
 285
 286 // ----------------------------------------------------------------------------
 287 // drive virtual machine
 288 // ----------------------------------------------------------------------------
 289
 290 void VM::reset()
 291 {
 292         // reset all devices
 293         for(DEVICE* device = first_device; device; device = device->next_device) {
 294                 device->reset();
 295         }
 296
 297         // set busreq of sub cpu
 298         subcpu->write_signal(SIG_CPU_BUSREQ, 1, 1);
 299
 300         // halt key is not pressed (mz3500sm p.80)
 301         halt = 0;
 302         ls244->write_signal(SIG_LS244_INPUT, 0x80, 0xff);
 303
 304         // set printer signal (mz3500sm p.78)
 305         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 306         ls244->write_signal(SIG_LS244_INPUT, 0x1c, 0x1c);       // busy = ~(low), pe = ~(low), pdtr = high
 307         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 308 }
 309
 310 void VM::special_reset()
 311 {
 312         // halt key is pressed (mz3500sm p.80)
 313         halt = 8;
 314         ls244->write_signal(SIG_LS244_INPUT, 0x00, 0x80);
 315 }
 316
 317 void VM::run()
 318 {
 319         // halt key is released (mz3500sm p.80)
 320         if(halt != 0 && --halt == 0) {
 321                 ls244->write_signal(SIG_LS244_INPUT, 0x80, 0x80);
 322         }
 323         event->drive();
 324 }
 325
 326 double VM::get_frame_rate()
 327 {
 328         return event->get_frame_rate();
 329 }
 330
 331 // ----------------------------------------------------------------------------
 332 // debugger
 333 // ----------------------------------------------------------------------------
 334
 335 #ifdef USE_DEBUGGER
 336 DEVICE *VM::get_cpu(int index)
 337 {
 338         if(index == 0) {
 339                 return maincpu;
 340         } else if(index == 1) {
 341                 return subcpu;
 342         }
 343         return NULL;
 344 }
 345 #endif
 346
 347 // ----------------------------------------------------------------------------
 348 // draw screen
 349 // ----------------------------------------------------------------------------
 350
 351 void VM::draw_screen()
 352 {
 353         subbus->draw_screen();
 354 }
 355
 356 // ----------------------------------------------------------------------------
 357 // soud manager
 358 // ----------------------------------------------------------------------------
 359
 360 void VM::initialize_sound(int rate, int samples)
 361 {
 362         // init sound manager
 363         event->initialize_sound(rate, samples);
 364
 365         // init sound gen
 366         pcm->initialize_sound(rate, 8000);
 367 }
 368
 369 uint16_t* VM::create_sound(int* extra_frames)
 370 {
 371         return event->create_sound(extra_frames);
 372 }
 373
 374 int VM::get_sound_buffer_ptr()
 375 {
 376         return event->get_sound_buffer_ptr();
 377 }
 378
 379 #ifdef USE_SOUND_VOLUME
 380 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 381 {
 382         if(ch == 0) {
 383                 pcm->set_volume(0, decibel_l, decibel_r);
 384         } else if(ch == 1) {
 385                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 386                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 387                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 388         }
 389 }
 390 #endif
 391
 392 // ----------------------------------------------------------------------------
 393 // notify key
 394 // ----------------------------------------------------------------------------
 395
 396 void VM::key_down(int code, bool repeat)
 397 {
 398         kbd->key_down(code);
 399 }
 400
 401 void VM::key_up(int code)
 402 {
 403         kbd->key_up(code);
 404 }
 405
 406 bool VM::get_caps_locked()
 407 {
 408         return kbd->get_caps_locked();
 409 }
 410
 411 bool VM::get_kana_locked()
 412 {
 413         return kbd->get_kana_locked();
 414 }
 415
 416 // ----------------------------------------------------------------------------
 417 // user interface
 418 // ----------------------------------------------------------------------------
 419
 420 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 421 {
 422         fdc->open_disk(drv, file_path, bank);
 423 }
 424
 425 void VM::close_floppy_disk(int drv)
 426 {
 427         fdc->close_disk(drv);
 428 }
 429
 430 bool VM::is_floppy_disk_inserted(int drv)
 431 {
 432         return fdc->is_disk_inserted(drv);
 433 }
 434
 435 void VM::is_floppy_disk_protected(int drv, bool value)
 436 {
 437         fdc->is_disk_protected(drv, value);
 438 }
 439
 440 bool VM::is_floppy_disk_protected(int drv)
 441 {
 442         return fdc->is_disk_protected(drv);
 443 }
 444
 445 uint32_t VM::is_floppy_disk_accessed()
 446 {
 447         return fdc->read_signal(0);
 448 }
 449
 450 bool VM::is_frame_skippable()
 451 {
 452         return event->is_frame_skippable();
 453 }
 454
 455 void VM::update_config()
 456 {
 457         for(DEVICE* device = first_device; device; device = device->next_device) {
 458                 device->update_config();
 459         }
 460 }
 461
 462 #define STATE_VERSION   5
 463
 464 bool VM::process_state(FILEIO* state_fio, bool loading)
 465 {
 466         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 467                 return false;
 468         }
 469         for(DEVICE* device = first_device; device; device = device->next_device) {
 470                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 471                 // const char *name = typeid(*device).name();
 472                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 473                 const char *name = device->get_device_name();
 474                 int len = strlen(name);
 475
 476                 if(!state_fio->StateCheckInt32(len)) {
 477                         if(loading) {
 478                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 479                         }
 480                         return false;
 481                 }
 482                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 483                         if(loading) {
 484                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 485                         }
 486                         return false;
 487                 }
 488                 if(!device->process_state(state_fio, loading)) {
 489                         if(loading) {
 490                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 491                         }
 492                         return false;
 493                 }
 494         }
 495         // Machine specified.
 496         state_fio->StateUint8(halt);
 497         return true;
 498 }