source/src/vm/mz5500/mz5500.cpp

   1 /*
   2         SHARP MZ-5500 Emulator 'EmuZ-5500'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.04.10 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "mz5500.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../disk.h"
  16 #include "../i8237.h"
  17 #include "../i8255.h"
  18 #include "../i8259.h"
  19 #if defined(HAS_I286) || defined(HAS_I186)
  20 #include "../i286.h"
  21 #else
  22 #include "../i86.h"
  23 #endif
  24 #include "../io.h"
  25 #include "../ls393.h"
  26 #include "../mz1p17.h"
  27 #include "../not.h"
  28 #include "../prnfile.h"
  29 #include "../rp5c01.h"
  30 #include "../upd7220.h"
  31 #include "../upd765a.h"
  32 #include "../ym2203.h"
  33 #include "../z80ctc.h"
  34 #include "../z80sio.h"
  35
  36 #ifdef USE_DEBUGGER
  37 #include "../debugger.h"
  38 #endif
  39
  40 #include "display.h"
  41 #include "keyboard.h"
  42 #include "memory.h"
  43 #include "sysport.h"
  44
  45 // ----------------------------------------------------------------------------
  46 // initialize
  47 // ----------------------------------------------------------------------------
  48
  49 VM::VM(EMU* parent_emu) : emu(parent_emu)
  50 {
  51         // create devices
  52         first_device = last_device = NULL;
  53         dummy = new DEVICE(this, emu);  // must be 1st device
  54         event = new EVENT(this, emu);   // must be 2nd device
  55 #if defined(_USE_QT)
  56         dummy->set_device_name(_T("1st Dummy"));
  57         event->set_device_name(_T("EVENT"));
  58 #endif
  59
  60         if(config.printer_device_type == 0) {
  61                 printer = new PRNFILE(this, emu);
  62         } else if(config.printer_device_type == 1) {
  63                 printer = new MZ1P17(this, emu);
  64         } else {
  65                 printer = dummy;
  66         }
  67         dma = new I8237(this, emu);
  68         pio = new I8255(this, emu);
  69         pic = new I8259(this, emu);
  70 #if defined(HAS_I286) || defined(HAS_I186)
  71         cpu = new I286(this, emu);
  72 #else
  73         cpu = new I86(this, emu);
  74 #endif
  75         io = new IO(this, emu);
  76         div = new LS393(this, emu);
  77 #if defined(_USE_QT)
  78         io->set_device_name(_T("MAIN I/O"));
  79   #if defined(_MZ6550)
  80         cpu->set_device_name(_T("MAIN CPU(i286)"));
  81   #else
  82         cpu->set_device_name(_T("MAIN CPU(i8086)"));
  83   #endif
  84         div->set_device_name(_T("74LS393(DIVIDER)"));
  85 #endif
  86         not_data1 = new NOT(this, emu);
  87         not_data2 = new NOT(this, emu);
  88         not_data3 = new NOT(this, emu);
  89         not_data4 = new NOT(this, emu);
  90         not_data5 = new NOT(this, emu);
  91         not_data6 = new NOT(this, emu);
  92         not_data7 = new NOT(this, emu);
  93         not_data8 = new NOT(this, emu);
  94         not_busy = new NOT(this, emu);
  95 #if defined(_USE_QT)
  96         not_data1->set_device_name(_T("NOT GATE #1"));
  97         not_data2->set_device_name(_T("NOT GATE #2"));
  98         not_data3->set_device_name(_T("NOT GATE #3"));
  99         not_data4->set_device_name(_T("NOT GATE #4"));
 100         not_data5->set_device_name(_T("NOT GATE #5"));
 101         not_data6->set_device_name(_T("NOT GATE #6"));
 102         not_data7->set_device_name(_T("NOT GATE #7"));
 103         not_data8->set_device_name(_T("NOT GATE #8"));
 104         not_busy->set_device_name(_T("NOT GATE(PRINTER BUSY)"));
 105 #endif
 106         rtc = new RP5C01(this, emu);
 107         gdc = new UPD7220(this, emu);
 108         fdc = new UPD765A(this, emu);
 109         psg = new YM2203(this, emu);    // AY-3-8912
 110         ctc0 = new Z80CTC(this, emu);
 111 #if defined(_MZ6500) || defined(_MZ6550)
 112         ctc1 = new Z80CTC(this, emu);
 113 #endif
 114         sio = new Z80SIO(this, emu);
 115
 116         display = new DISPLAY(this, emu);
 117         keyboard = new KEYBOARD(this, emu);
 118         memory = new MEMORY(this, emu);
 119         sysport = new SYSPORT(this, emu);
 120 #if defined(_USE_QT)
 121         display->set_device_name(_T("DISPLAY I/F"));
 122         keyboard->set_device_name(_T("KEYBOARD I/F"));
 123         memory->set_device_name(_T("MEMORY"));
 124         sysport->set_device_name(_T("SYSTEM PORT"));
 125 #endif
 126         // set contexts
 127         event->set_context_cpu(cpu);
 128         event->set_context_sound(psg);
 129 #if defined(USE_SOUND_FILES)
 130         if(fdc->load_sound_data(UPD765A_SND_TYPE_SEEK, _T("FDDSEEK.WAV"))) {
 131                 event->set_context_sound(fdc);
 132         }
 133 #endif
 134
 135         if(config.printer_device_type == 0) {
 136                 PRNFILE *prnfile = (PRNFILE *)printer;
 137                 prnfile->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 138                 prnfile->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 139         } else if(config.printer_device_type == 1) {
 140                 MZ1P17 *mz1p17 = (MZ1P17 *)printer;
 141                 mz1p17->mode = MZ1P17_MODE_MZ1;
 142                 mz1p17->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 143                 mz1p17->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 144         }
 145         dma->set_context_memory(memory);
 146         dma->set_context_ch1(fdc);
 147         pio->set_context_port_a(not_data1, SIG_NOT_INPUT, 0x01, 0);
 148         pio->set_context_port_a(not_data2, SIG_NOT_INPUT, 0x02, 0);
 149         pio->set_context_port_a(not_data3, SIG_NOT_INPUT, 0x04, 0);
 150         pio->set_context_port_a(not_data4, SIG_NOT_INPUT, 0x08, 0);
 151         pio->set_context_port_a(not_data5, SIG_NOT_INPUT, 0x10, 0);
 152         pio->set_context_port_a(not_data6, SIG_NOT_INPUT, 0x20, 0);
 153         pio->set_context_port_a(not_data7, SIG_NOT_INPUT, 0x40, 0);
 154         pio->set_context_port_a(not_data8, SIG_NOT_INPUT, 0x80, 0);
 155         pio->set_context_port_c(keyboard, SIG_KEYBOARD_INPUT, 0x03, 0);
 156         pio->set_context_port_c(pic, SIG_I8259_IR2 | SIG_I8259_CHIP0, 0x08, 0);
 157         pio->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x20, 0);
 158         pic->set_context_cpu(cpu);
 159         div->set_context_2qb(ctc0, SIG_Z80CTC_TRIG_3, 1);
 160 #if defined(_MZ6500) || defined(_MZ6550)
 161         div->set_context_1qb(ctc1, SIG_Z80CTC_TRIG_0, 1);
 162         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_1, 1);
 163         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_2, 1);
 164         div->set_context_2qd(ctc1, SIG_Z80CTC_TRIG_3, 1);
 165 #endif
 166         rtc->set_context_alarm(pic, SIG_I8259_IR0 | SIG_I8259_CHIP1, 1);
 167         gdc->set_vram_ptr(memory->get_vram(), 0x80000);
 168         gdc->set_context_vsync(pic, SIG_I8259_IR0 | SIG_I8259_CHIP0, 1);
 169         fdc->set_context_irq(pic, SIG_I8259_IR1 | SIG_I8259_CHIP1, 1);
 170         fdc->set_context_drq(dma, SIG_I8237_CH1, 1);
 171         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP0, 0x20, 0);
 172         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP1, 0x40, 0);
 173         psg->set_context_port_a(memory, SIG_MEMORY_BANK, 0xe0, 0);
 174         ctc0->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 175         ctc0->set_context_zc0(div, SIG_LS393_CLK, 1);
 176         ctc0->set_context_zc1(sio, SIG_Z80SIO_TX_CLK_CH0, 1);
 177         ctc0->set_context_zc1(sio, SIG_Z80SIO_RX_CLK_CH0, 1);
 178         ctc0->set_context_zc2(sio, SIG_Z80SIO_TX_CLK_CH1, 1);
 179         ctc0->set_context_zc2(sio, SIG_Z80SIO_RX_CLK_CH1, 1);
 180 #if defined(_MZ6500) || defined(_MZ6550)
 181         ctc0->set_context_child(ctc1);
 182         ctc1->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 183 #endif
 184         sio->set_context_intr(pic, SIG_I8259_IR1 | SIG_I8259_CHIP0);
 185
 186         not_data1->set_context_out(printer, SIG_PRINTER_DATA, 0x01);
 187         not_data2->set_context_out(printer, SIG_PRINTER_DATA, 0x02);
 188         not_data3->set_context_out(printer, SIG_PRINTER_DATA, 0x04);
 189         not_data4->set_context_out(printer, SIG_PRINTER_DATA, 0x08);
 190         not_data5->set_context_out(printer, SIG_PRINTER_DATA, 0x10);
 191         not_data6->set_context_out(printer, SIG_PRINTER_DATA, 0x20);
 192         not_data7->set_context_out(printer, SIG_PRINTER_DATA, 0x40);
 193         not_data8->set_context_out(printer, SIG_PRINTER_DATA, 0x80);
 194         not_busy->set_context_out(pio, SIG_I8255_PORT_B, 0x01);
 195         display->set_vram_ptr(memory->get_vram());
 196         display->set_sync_ptr(gdc->get_sync());
 197         display->set_ra_ptr(gdc->get_ra());
 198         display->set_cs_ptr(gdc->get_cs());
 199         display->set_ead_ptr(gdc->get_ead());
 200         keyboard->set_context_pio(pio);
 201         keyboard->set_context_pic(pic);
 202         memory->set_context_cpu(cpu);
 203         sysport->set_context_fdc(fdc);
 204         sysport->set_context_ctc(ctc0);
 205         sysport->set_context_sio(sio);
 206
 207         // cpu bus
 208         cpu->set_context_mem(memory);
 209         cpu->set_context_io(io);
 210         cpu->set_context_intr(pic);
 211 #ifdef SINGLE_MODE_DMA
 212         cpu->set_context_dma(dma);
 213 #endif
 214 #ifdef USE_DEBUGGER
 215         cpu->set_context_debugger(new DEBUGGER(this, emu));
 216 #endif
 217
 218         // i/o bus
 219         io->set_iomap_range_rw(0x00, 0x0f, dma);
 220         io->set_iomap_range_rw(0x10, 0x1f, pio);
 221         io->set_iomap_range_rw(0x20, 0x2f, fdc);
 222         for(int i = 0x30; i < 0x40; i += 2) {
 223                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP0 | ((i >> 1) & 1));
 224         }
 225         for(int i = 0x40; i < 0x50; i += 2) {
 226                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP1 | ((i >> 1) & 1));
 227         }
 228         io->set_iomap_range_w(0x50, 0x5f, memory);
 229         io->set_iomap_range_r(0x60, 0x6f, sysport);
 230         io->set_iomap_range_w(0x70, 0x7f, sysport);
 231 #if defined(_MZ6500) || defined(_MZ6550)
 232         io->set_iomap_single_rw(0xcd, memory);
 233 #endif
 234         for(int i = 0x100; i < 0x110; i += 2) {
 235                 io->set_iomap_alias_rw(i, gdc, (i >> 1) & 1);
 236         }
 237         io->set_iomap_range_rw(0x110, 0x17f, display);
 238         io->set_iomap_range_rw(0x200, 0x20f, sio);
 239         io->set_iomap_range_rw(0x210, 0x21f, ctc0);
 240         io->set_iomap_range_rw(0x220, 0x22f, rtc);
 241         for(int i = 0x230; i < 0x240; i++) {
 242                 io->set_iomap_alias_rw(i, psg, ~i & 1);
 243         }
 244         io->set_iomap_range_r(0x240, 0x25f, sysport);
 245         io->set_iomap_range_w(0x260, 0x26f, sysport);
 246         io->set_iomap_range_r(0x270, 0x27f, sysport);
 247
 248         // initialize all devices
 249         for(DEVICE* device = first_device; device; device = device->next_device) {
 250                 device->initialize();
 251         }
 252         for(int i = 0; i < 4; i++) {
 253 #if defined(_MZ6500) || defined(_MZ6550)
 254                 fdc->set_drive_type(i, DRIVE_TYPE_2HD);
 255 #else
 256                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 257 #endif
 258         }
 259 }
 260
 261 VM::~VM()
 262 {
 263         // delete all devices
 264         for(DEVICE* device = first_device; device;) {
 265                 DEVICE *next_device = device->next_device;
 266                 device->release();
 267                 delete device;
 268                 device = next_device;
 269         }
 270 }
 271
 272 DEVICE* VM::get_device(int id)
 273 {
 274         for(DEVICE* device = first_device; device; device = device->next_device) {
 275                 if(device->this_device_id == id) {
 276                         return device;
 277                 }
 278         }
 279         return NULL;
 280 }
 281
 282 // ----------------------------------------------------------------------------
 283 // drive virtual machine
 284 // ----------------------------------------------------------------------------
 285
 286 void VM::reset()
 287 {
 288         // reset all devices
 289         for(DEVICE* device = first_device; device; device = device->next_device) {
 290                 device->reset();
 291         }
 292         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 293         pio->write_signal(SIG_I8255_PORT_B, 0x03, 0x07);        // busy = ~(low), pe = ~(low), pdtr = ~(high)
 294         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 295 }
 296
 297 void VM::special_reset()
 298 {
 299         // nmi
 300         cpu->write_signal(SIG_CPU_NMI, 1, 1);
 301         sysport->nmi_reset();
 302 }
 303
 304 void VM::run()
 305 {
 306         event->drive();
 307 }
 308
 309 double VM::get_frame_rate()
 310 {
 311         return event->get_frame_rate();
 312 }
 313
 314 // ----------------------------------------------------------------------------
 315 // debugger
 316 // ----------------------------------------------------------------------------
 317
 318 #ifdef USE_DEBUGGER
 319 DEVICE *VM::get_cpu(int index)
 320 {
 321         if(index == 0) {
 322                 return cpu;
 323         }
 324         return NULL;
 325 }
 326 #endif
 327
 328 // ----------------------------------------------------------------------------
 329 // draw screen
 330 // ----------------------------------------------------------------------------
 331
 332 void VM::draw_screen()
 333 {
 334         display->draw_screen();
 335 }
 336
 337 uint32_t VM::get_access_lamp_status()
 338 {
 339         uint32_t status = fdc->read_signal(0);
 340         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 341 }
 342
 343 // ----------------------------------------------------------------------------
 344 // soud manager
 345 // ----------------------------------------------------------------------------
 346
 347 void VM::initialize_sound(int rate, int samples)
 348 {
 349         // init sound manager
 350         event->initialize_sound(rate, samples);
 351
 352         // init sound gen
 353         psg->initialize_sound(rate, 4000000, samples, 0, 0);
 354 }
 355
 356 uint16_t* VM::create_sound(int* extra_frames)
 357 {
 358         return event->create_sound(extra_frames);
 359 }
 360
 361 int VM::get_sound_buffer_ptr()
 362 {
 363         return event->get_sound_buffer_ptr();
 364 }
 365
 366 #ifdef USE_SOUND_VOLUME
 367 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 368 {
 369         if(ch == 0) {
 370                 psg->set_volume(1, decibel_l, decibel_r);
 371         }
 372 #if defined(USE_SOUND_FILES)
 373         else if(ch == 1) {
 374                 fdc->set_volume(UPD765A_SND_TYPE_SEEK, decibel_l, decibel_r);
 375         }
 376 #endif
 377 }
 378 #endif
 379
 380 // ----------------------------------------------------------------------------
 381 // notify key
 382 // ----------------------------------------------------------------------------
 383
 384 void VM::key_down(int code, bool repeat)
 385 {
 386         keyboard->key_down(code);
 387 }
 388
 389 void VM::key_up(int code)
 390 {
 391 //      keyboard->key_up(code);
 392 }
 393
 394 // ----------------------------------------------------------------------------
 395 // user interface
 396 // ----------------------------------------------------------------------------
 397
 398 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 399 {
 400         fdc->open_disk(drv, file_path, bank);
 401 }
 402
 403 void VM::close_floppy_disk(int drv)
 404 {
 405         fdc->close_disk(drv);
 406 }
 407
 408 bool VM::is_floppy_disk_inserted(int drv)
 409 {
 410         return fdc->is_disk_inserted(drv);
 411 }
 412
 413 void VM::is_floppy_disk_protected(int drv, bool value)
 414 {
 415         fdc->is_disk_protected(drv, value);
 416 }
 417
 418 bool VM::is_floppy_disk_protected(int drv)
 419 {
 420         return fdc->is_disk_protected(drv);
 421 }
 422
 423 bool VM::is_frame_skippable()
 424 {
 425         return event->is_frame_skippable();
 426 }
 427
 428 void VM::update_config()
 429 {
 430         for(DEVICE* device = first_device; device; device = device->next_device) {
 431                 device->update_config();
 432         }
 433 }
 434
 435 #define STATE_VERSION   2
 436
 437 void VM::save_state(FILEIO* state_fio)
 438 {
 439         state_fio->FputUint32(STATE_VERSION);
 440
 441         for(DEVICE* device = first_device; device; device = device->next_device) {
 442                 device->save_state(state_fio);
 443         }
 444 }
 445
 446 bool VM::load_state(FILEIO* state_fio)
 447 {
 448         if(state_fio->FgetUint32() != STATE_VERSION) {
 449                 return false;
 450         }
 451         for(DEVICE* device = first_device; device; device = device->next_device) {
 452                 if(!device->load_state(state_fio)) {
 453                         return false;
 454                 }
 455         }
 456         return true;
 457 }
 458