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