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 using MZ3500::MAIN;
  40 using MZ3500::SUB;
  41 using MZ3500::KEYBOARD;
  42
  43 // ----------------------------------------------------------------------------
  44 // initialize
  45 // ----------------------------------------------------------------------------
  46
  47 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  48 {
  49         // create devices
  50         first_device = last_device = NULL;
  51         dummy = new DEVICE(this, emu);  // must be 1st device
  52         event = new EVENT(this, emu);   // must be 2nd device
  53         dummy->set_device_name(_T("1st Dummy"));
  54
  55         // for main cpu
  56         mainio = new IO(this, emu);
  57         fdc = new UPD765A(this, emu);
  58         fdc->set_context_noise_seek(new NOISE(this, emu));
  59         fdc->set_context_noise_head_down(new NOISE(this, emu));
  60         fdc->set_context_noise_head_up(new NOISE(this, emu));
  61         maincpu = new Z80(this, emu);
  62         mainbus= new MAIN(this, emu);
  63         mainio->set_device_name(_T("I/O Bus (Main)"));
  64         maincpu->set_device_name(_T("Z80 CPU (Main)"));
  65         mainbus->set_device_name(_T("MAIN BUS"));
  66         // for sub cpu
  67         if(config.printer_type == 0) {
  68                 printer = new PRNFILE(this, emu);
  69         } else if(config.printer_type == 1) {
  70                 printer = new MZ1P17(this, emu);
  71         } else {
  72                 printer = dummy;
  73         }
  74         sio = new I8251(this, emu);
  75         pit = new I8253(this, emu);
  76         pio = new I8255(this, emu);
  77         subio = new IO(this, emu);
  78         subio->set_device_name(_T("I/O Bus (Sub)"));
  79         ls244 = new LS244(this, emu);
  80         not_data0 = new NOT(this, emu);
  81         not_data0->set_device_name(_T("NOT Gate (Printer Bit0)"));
  82         not_data1 = new NOT(this, emu);
  83         not_data1->set_device_name(_T("NOT Gate (Printer Bit1)"));
  84         not_data2 = new NOT(this, emu);
  85         not_data2->set_device_name(_T("NOT Gate (Printer Bit2)"));
  86         not_data3 = new NOT(this, emu);
  87         not_data3->set_device_name(_T("NOT Gate (Printer Bit3)"));
  88         not_data4 = new NOT(this, emu);
  89         not_data4->set_device_name(_T("NOT Gate (Printer Bit4)"));
  90         not_data5 = new NOT(this, emu);
  91         not_data5->set_device_name(_T("NOT Gate (Printer Bit5)"));
  92         not_data6 = new NOT(this, emu);
  93         not_data6->set_device_name(_T("NOT Gate (Printer Bit6)"));
  94         not_data7 = new NOT(this, emu);
  95         not_data7->set_device_name(_T("NOT Gate (Printer Bit7)"));
  96         not_busy = new NOT(this, emu);
  97         not_busy->set_device_name(_T("NOT Gate (Printer Busy)"));
  98         pcm = new PCM1BIT(this, emu);
  99         rtc = new UPD1990A(this, emu);
 100         gdc_chr = new UPD7220(this, emu);
 101         gdc_chr->set_device_name(_T("uPD7220 GDC (Character)"));
 102         gdc_gfx = new UPD7220(this, emu);
 103         gdc_gfx->set_device_name(_T("uPD7220 GDC (Graphics)"));
 104         subcpu = new Z80(this, emu);
 105         subcpu->set_device_name(_T("Z80 CPU (Sub)"));
 106         subbus = new SUB(this, emu);
 107         kbd = new KEYBOARD(this, emu);
 108
 109         // set contexts
 110         event->set_context_cpu(maincpu, CPU_CLOCKS);
 111         event->set_context_cpu(subcpu, CPU_CLOCKS);
 112         event->set_context_sound(pcm);
 113         event->set_context_sound(fdc->get_context_noise_seek());
 114         event->set_context_sound(fdc->get_context_noise_head_down());
 115         event->set_context_sound(fdc->get_context_noise_head_up());
 116
 117         // mz3500sm p.59
 118         fdc->set_context_irq(mainbus, SIG_MAIN_INTFD, 1);
 119         fdc->set_context_drq(mainbus, SIG_MAIN_DRQ, 1);
 120         fdc->set_context_index(mainbus, SIG_MAIN_INDEX, 1);
 121
 122         // mz3500sm p.78
 123         if(config.printer_type == 0) {
 124                 PRNFILE *prnfile = (PRNFILE *)printer;
 125                 prnfile->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 126                 prnfile->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 127         } else if(config.printer_type == 1) {
 128                 MZ1P17 *mz1p17 = (MZ1P17 *)printer;
 129                 mz1p17->mode = MZ1P17_MODE_MZ1;
 130                 mz1p17->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 131                 mz1p17->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 132
 133                 // sw1=on, sw2=off, select MZ-1P02 (mz3500sm p.85)
 134                 config.dipswitch &= ~0x03;
 135                 config.dipswitch |=  0x01;
 136         }
 137
 138         // mz3500sm p.72,77
 139         sio->set_context_rxrdy(subcpu, SIG_CPU_NMI, 1);
 140
 141         // mz3500sm p.77,83
 142         // i8253 ch.0 -> i8251 txc,rxc
 143         pit->set_context_ch1(pcm, SIG_PCM1BIT_SIGNAL, 1);
 144         pit->set_context_ch2(pit, SIG_I8253_GATE_1, 1);
 145         pit->set_constant_clock(0, 2450760);
 146         pit->set_constant_clock(1, 2450760);
 147         pit->set_constant_clock(2, 2450760);
 148
 149         // mz3500sm p.78,80,81
 150         pio->set_context_port_a(not_data0, SIG_NOT_INPUT, 0x01, 0);
 151         pio->set_context_port_a(not_data1, SIG_NOT_INPUT, 0x02, 0);
 152         pio->set_context_port_a(not_data2, SIG_NOT_INPUT, 0x04, 0);
 153         pio->set_context_port_a(not_data3, SIG_NOT_INPUT, 0x08, 0);
 154         pio->set_context_port_a(not_data4, SIG_NOT_INPUT, 0x10, 0);
 155         pio->set_context_port_a(not_data5, SIG_NOT_INPUT, 0x20, 0);
 156         pio->set_context_port_a(not_data6, SIG_NOT_INPUT, 0x40, 0);
 157         pio->set_context_port_a(not_data7, SIG_NOT_INPUT, 0x80, 0);
 158         pio->set_context_port_b(rtc, SIG_UPD1990A_STB, 0x01, 0);
 159         pio->set_context_port_b(rtc, SIG_UPD1990A_C0,  0x02, 0);
 160         pio->set_context_port_b(rtc, SIG_UPD1990A_C1,  0x04, 0);
 161         pio->set_context_port_b(rtc, SIG_UPD1990A_C2,  0x08, 0);
 162         pio->set_context_port_b(rtc, SIG_UPD1990A_DIN, 0x10, 0);
 163         pio->set_context_port_b(rtc, SIG_UPD1990A_CLK, 0x20, 0);
 164         pio->set_context_port_b(mainbus, SIG_MAIN_SRDY, 0x40, 0);
 165 //      pio->set_context_port_b(subbus, SIG_SUB_PIO_PM, 0x80, 0);       // P/M: CG Selection
 166         pio->set_context_port_c(kbd, SIG_KEYBOARD_DC, 0x01, 0);
 167         pio->set_context_port_c(kbd, SIG_KEYBOARD_STC, 0x02, 0);
 168         pio->set_context_port_c(kbd, SIG_KEYBOARD_ACKC, 0x04, 0);
 169         // i8255 pc3 <- intr (not use ???)
 170         pio->set_context_port_c(pcm, SIG_PCM1BIT_MUTE, 0x10, 0);
 171         pio->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x20, 0);
 172         // i8255 pc6 <- printer ack
 173         pio->set_context_port_c(ls244, SIG_LS244_INPUT, 0x80, -6);
 174
 175         // mz3500sm p.78
 176         not_data0->set_context_out(printer, SIG_PRINTER_DATA, 0x01);
 177         not_data1->set_context_out(printer, SIG_PRINTER_DATA, 0x02);
 178         not_data2->set_context_out(printer, SIG_PRINTER_DATA, 0x04);
 179         not_data3->set_context_out(printer, SIG_PRINTER_DATA, 0x08);
 180         not_data4->set_context_out(printer, SIG_PRINTER_DATA, 0x10);
 181         not_data5->set_context_out(printer, SIG_PRINTER_DATA, 0x20);
 182         not_data6->set_context_out(printer, SIG_PRINTER_DATA, 0x40);
 183         not_data7->set_context_out(printer, SIG_PRINTER_DATA, 0x80);
 184         not_busy->set_context_out(ls244, SIG_LS244_INPUT, 0x04);
 185
 186         // mz3500sm p.80,81
 187         rtc->set_context_dout(ls244, SIG_LS244_INPUT, 0x01);
 188
 189         gdc_chr->set_vram_ptr(subbus->get_vram_chr(), 0x2000, 0xfff);
 190         subbus->set_sync_ptr_chr(gdc_chr->get_sync());
 191         subbus->set_ra_ptr_chr(gdc_chr->get_ra());
 192         subbus->set_cs_ptr_chr(gdc_chr->get_cs());
 193         subbus->set_ead_ptr_chr(gdc_chr->get_ead());
 194
 195         gdc_gfx->set_vram_ptr(subbus->get_vram_gfx(), 0x18000);
 196         subbus->set_sync_ptr_gfx(gdc_gfx->get_sync());
 197         subbus->set_ra_ptr_gfx(gdc_gfx->get_ra());
 198         subbus->set_cs_ptr_gfx(gdc_gfx->get_cs());
 199         subbus->set_ead_ptr_gfx(gdc_gfx->get_ead());
 200
 201         kbd->set_context_subcpu(subcpu);
 202         kbd->set_context_ls244(ls244);
 203
 204         // mz3500sm p.23
 205         subcpu->set_context_busack(mainbus, SIG_MAIN_SACK, 1);
 206
 207         mainbus->set_context_maincpu(maincpu);
 208         mainbus->set_context_subcpu(subcpu);
 209         mainbus->set_context_fdc(fdc);
 210
 211         subbus->set_context_main(mainbus);
 212         subbus->set_ipl(mainbus->get_ipl());
 213         subbus->set_common(mainbus->get_common());
 214
 215         // mz3500sm p.17
 216         mainio->set_iomap_range_rw(0xec, 0xef, mainbus);        // reset int0
 217         mainio->set_iomap_range_rw(0xf4, 0xf7, fdc);            // fdc: f4h,f6h = status, f5h,f7h = data
 218         mainio->set_iomap_range_rw(0xf8, 0xfb, mainbus);        // mfd interface
 219         mainio->set_iomap_range_rw(0xfc, 0xff, mainbus);        // memory mpaper
 220
 221         // mz3500sm p.18
 222         subio->set_iomap_range_w(0x00, 0x0f, subbus);           // int0 to main (set flipflop)
 223         subio->set_iomap_range_rw(0x10, 0x1f, sio);
 224         subio->set_iomap_range_rw(0x20, 0x2f, pit);
 225         subio->set_iomap_range_rw(0x30, 0x3f, pio);
 226         subio->set_iomap_range_r(0x40, 0x4f, ls244);            // input port
 227         subio->set_iomap_range_rw(0x50, 0x5f, subbus);          // crt control i/o
 228         subio->set_iomap_range_rw(0x60, 0x6f, gdc_gfx);
 229         subio->set_iomap_range_rw(0x70, 0x7f, gdc_chr);
 230 #ifdef _IO_DEBUG_LOG
 231         subio->cpu_index = 1;
 232 #endif
 233
 234         // cpu bus
 235         maincpu->set_context_mem(mainbus);
 236         maincpu->set_context_io(mainio);
 237         maincpu->set_context_intr(mainbus);
 238 #ifdef USE_DEBUGGER
 239         maincpu->set_context_debugger(new DEBUGGER(this, emu));
 240 #endif
 241
 242         subcpu->set_context_mem(subbus);
 243         subcpu->set_context_io(subio);
 244         subcpu->set_context_intr(subbus);
 245 #ifdef USE_DEBUGGER
 246         subcpu->set_context_debugger(new DEBUGGER(this, emu));
 247 #endif
 248
 249         // initialize all devices
 250 #if defined(__GIT_REPO_VERSION)
 251         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 252 #endif
 253         for(DEVICE* device = first_device; device; device = device->next_device) {
 254                 device->initialize();
 255         }
 256         for(int i = 0; i < 4; i++) {
 257                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 258         }
 259         // GDC clock (mz3500sm p.33,34)
 260         if(config.monitor_type == 0 || config.monitor_type == 1) {
 261                 gdc_chr->set_horiz_freq(20920);
 262                 gdc_gfx->set_horiz_freq(20920);
 263         } else {
 264                 gdc_chr->set_horiz_freq(15870);
 265                 gdc_gfx->set_horiz_freq(15870);
 266         }
 267 }
 268
 269 VM::~VM()
 270 {
 271         // delete all devices
 272         for(DEVICE* device = first_device; device;) {
 273                 DEVICE *next_device = device->next_device;
 274                 device->release();
 275                 delete device;
 276                 device = next_device;
 277         }
 278 }
 279
 280 DEVICE* VM::get_device(int id)
 281 {
 282         for(DEVICE* device = first_device; device; device = device->next_device) {
 283                 if(device->this_device_id == id) {
 284                         return device;
 285                 }
 286         }
 287         return NULL;
 288 }
 289
 290 // ----------------------------------------------------------------------------
 291 // drive virtual machine
 292 // ----------------------------------------------------------------------------
 293
 294 void VM::reset()
 295 {
 296         // reset all devices
 297         for(DEVICE* device = first_device; device; device = device->next_device) {
 298                 device->reset();
 299         }
 300
 301         // set busreq of sub cpu
 302         subcpu->write_signal(SIG_CPU_BUSREQ, 1, 1);
 303
 304         // halt key is not pressed (mz3500sm p.80)
 305         halt = 0;
 306         ls244->write_signal(SIG_LS244_INPUT, 0x80, 0xff);
 307
 308         // set printer signal (mz3500sm p.78)
 309         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 310         ls244->write_signal(SIG_LS244_INPUT, 0x1c, 0x1c);       // busy = ~(low), pe = ~(low), pdtr = high
 311         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 312 }
 313
 314 void VM::special_reset()
 315 {
 316         // halt key is pressed (mz3500sm p.80)
 317         halt = 8;
 318         ls244->write_signal(SIG_LS244_INPUT, 0x00, 0x80);
 319 }
 320
 321 void VM::run()
 322 {
 323         // halt key is released (mz3500sm p.80)
 324         if(halt != 0 && --halt == 0) {
 325                 ls244->write_signal(SIG_LS244_INPUT, 0x80, 0x80);
 326         }
 327         event->drive();
 328 }
 329
 330 double VM::get_frame_rate()
 331 {
 332         return event->get_frame_rate();
 333 }
 334
 335 // ----------------------------------------------------------------------------
 336 // debugger
 337 // ----------------------------------------------------------------------------
 338
 339 #ifdef USE_DEBUGGER
 340 DEVICE *VM::get_cpu(int index)
 341 {
 342         if(index == 0) {
 343                 return maincpu;
 344         } else if(index == 1) {
 345                 return subcpu;
 346         }
 347         return NULL;
 348 }
 349 #endif
 350
 351 // ----------------------------------------------------------------------------
 352 // draw screen
 353 // ----------------------------------------------------------------------------
 354
 355 void VM::draw_screen()
 356 {
 357         subbus->draw_screen();
 358 }
 359
 360 // ----------------------------------------------------------------------------
 361 // soud manager
 362 // ----------------------------------------------------------------------------
 363
 364 void VM::initialize_sound(int rate, int samples)
 365 {
 366         // init sound manager
 367         event->initialize_sound(rate, samples);
 368
 369         // init sound gen
 370         pcm->initialize_sound(rate, 8000);
 371 }
 372
 373 uint16_t* VM::create_sound(int* extra_frames)
 374 {
 375         return event->create_sound(extra_frames);
 376 }
 377
 378 int VM::get_sound_buffer_ptr()
 379 {
 380         return event->get_sound_buffer_ptr();
 381 }
 382
 383 #ifdef USE_SOUND_VOLUME
 384 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 385 {
 386         if(ch == 0) {
 387                 pcm->set_volume(0, decibel_l, decibel_r);
 388         } else if(ch == 1) {
 389                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 390                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 391                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 392         }
 393 }
 394 #endif
 395
 396 // ----------------------------------------------------------------------------
 397 // notify key
 398 // ----------------------------------------------------------------------------
 399
 400 void VM::key_down(int code, bool repeat)
 401 {
 402         kbd->key_down(code);
 403 }
 404
 405 void VM::key_up(int code)
 406 {
 407         kbd->key_up(code);
 408 }
 409
 410 bool VM::get_caps_locked()
 411 {
 412         return kbd->get_caps_locked();
 413 }
 414
 415 bool VM::get_kana_locked()
 416 {
 417         return kbd->get_kana_locked();
 418 }
 419
 420 // ----------------------------------------------------------------------------
 421 // user interface
 422 // ----------------------------------------------------------------------------
 423
 424 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 425 {
 426         fdc->open_disk(drv, file_path, bank);
 427 }
 428
 429 void VM::close_floppy_disk(int drv)
 430 {
 431         fdc->close_disk(drv);
 432 }
 433
 434 bool VM::is_floppy_disk_inserted(int drv)
 435 {
 436         return fdc->is_disk_inserted(drv);
 437 }
 438
 439 void VM::is_floppy_disk_protected(int drv, bool value)
 440 {
 441         fdc->is_disk_protected(drv, value);
 442 }
 443
 444 bool VM::is_floppy_disk_protected(int drv)
 445 {
 446         return fdc->is_disk_protected(drv);
 447 }
 448
 449 uint32_t VM::is_floppy_disk_accessed()
 450 {
 451         return fdc->read_signal(0);
 452 }
 453
 454 bool VM::is_frame_skippable()
 455 {
 456         return event->is_frame_skippable();
 457 }
 458
 459 void VM::update_config()
 460 {
 461         for(DEVICE* device = first_device; device; device = device->next_device) {
 462                 device->update_config();
 463         }
 464 }
 465
 466 #define STATE_VERSION   5
 467
 468 bool VM::process_state(FILEIO* state_fio, bool loading)
 469 {
 470         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 471                 return false;
 472         }
 473         for(DEVICE* device = first_device; device; device = device->next_device) {
 474                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 475                 // const char *name = typeid(*device).name();
 476                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 477                 const char *name = device->get_device_name();
 478                 int len = strlen(name);
 479
 480                 if(!state_fio->StateCheckInt32(len)) {
 481                         if(loading) {
 482                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 483                         }
 484                         return false;
 485                 }
 486                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 487                         if(loading) {
 488                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 489                         }
 490                         return false;
 491                 }
 492                 if(!device->process_state(state_fio, loading)) {
 493                         if(loading) {
 494                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 495                         }
 496                         return false;
 497                 }
 498         }
 499         // Machine specified.
 500         state_fio->StateUint8(halt);
 501         return true;
 502 }