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 "../ay_3_891x.h"
  34 #include "../z80ctc.h"
  35 #include "../z80sio.h"
  36
  37 #ifdef USE_DEBUGGER
  38 #include "../debugger.h"
  39 #endif
  40
  41 #include "display.h"
  42 #include "keyboard.h"
  43 #include "memory.h"
  44 #include "sysport.h"
  45
  46 // ----------------------------------------------------------------------------
  47 // initialize
  48 // ----------------------------------------------------------------------------
  49
  50 VM::VM(EMU* parent_emu) : emu(parent_emu)
  51 {
  52         // create devices
  53         first_device = last_device = NULL;
  54         dummy = new DEVICE(this, emu);  // must be 1st device
  55         event = new EVENT(this, emu);   // must be 2nd device
  56 #if defined(_USE_QT)
  57         dummy->set_device_name(_T("1st Dummy"));
  58         event->set_device_name(_T("EVENT"));
  59 #endif
  60
  61         if(config.printer_device_type == 0) {
  62                 printer = new PRNFILE(this, emu);
  63         } else if(config.printer_device_type == 1) {
  64                 printer = new MZ1P17(this, emu);
  65         } else {
  66                 printer = dummy;
  67         }
  68         dma = new I8237(this, emu);
  69         pio = new I8255(this, emu);
  70         pic = new I8259(this, emu);
  71 #if defined(HAS_I286) || defined(HAS_I186)
  72         cpu = new I286(this, emu);
  73 #else
  74         cpu = new I86(this, emu);
  75 #endif
  76         io = new IO(this, emu);
  77         div = new LS393(this, emu);
  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         not_data0 = new NOT(this, emu);
  86         not_data0->set_device_name(_T("NOT Gate (Printer Bit0)"));
  87         not_data1 = new NOT(this, emu);
  88         not_data1->set_device_name(_T("NOT Gate (Printer Bit1)"));
  89         not_data2 = new NOT(this, emu);
  90         not_data2->set_device_name(_T("NOT Gate (Printer Bit2)"));
  91         not_data3 = new NOT(this, emu);
  92         not_data3->set_device_name(_T("NOT Gate (Printer Bit3)"));
  93         not_data4 = new NOT(this, emu);
  94         not_data4->set_device_name(_T("NOT Gate (Printer Bit4)"));
  95         not_data5 = new NOT(this, emu);
  96         not_data5->set_device_name(_T("NOT Gate (Printer Bit5)"));
  97         not_data6 = new NOT(this, emu);
  98         not_data6->set_device_name(_T("NOT Gate (Printer Bit6)"));
  99         not_data7 = new NOT(this, emu);
 100         not_data7->set_device_name(_T("NOT Gate (Printer Bit7)"));
 101         not_busy = new NOT(this, emu);
 102         not_busy->set_device_name(_T("NOT Gate (Printer Busy)"));
 103         rtc = new RP5C01(this, emu);
 104         gdc = new UPD7220(this, emu);
 105         fdc = new UPD765A(this, emu);
 106 //      psg = new YM2203(this, emu);
 107         psg = new AY_3_891X(this, emu); // AY-3-8912
 108         ctc0 = new Z80CTC(this, emu);
 109 #if defined(_MZ6500) || defined(_MZ6550)
 110         ctc1 = new Z80CTC(this, emu);
 111 #endif
 112         sio = new Z80SIO(this, emu);
 113
 114         display = new DISPLAY(this, emu);
 115         keyboard = new KEYBOARD(this, emu);
 116         memory = new MEMORY(this, emu);
 117         sysport = new SYSPORT(this, emu);
 118 #if defined(_USE_QT)
 119         display->set_device_name(_T("DISPLAY I/F"));
 120         keyboard->set_device_name(_T("KEYBOARD I/F"));
 121         memory->set_device_name(_T("MEMORY"));
 122         sysport->set_device_name(_T("SYSTEM PORT"));
 123 #endif
 124         // set contexts
 125         event->set_context_cpu(cpu);
 126         event->set_context_sound(psg);
 127 #if defined(USE_SOUND_FILES)
 128         if(fdc->load_sound_data(UPD765A_SND_TYPE_SEEK, _T("FDDSEEK.WAV"))) {
 129                 event->set_context_sound(fdc);
 130         }
 131 #endif
 132
 133         if(config.printer_device_type == 0) {
 134                 PRNFILE *prnfile = (PRNFILE *)printer;
 135                 prnfile->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 136                 prnfile->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 137         } else if(config.printer_device_type == 1) {
 138                 MZ1P17 *mz1p17 = (MZ1P17 *)printer;
 139                 mz1p17->mode = MZ1P17_MODE_MZ1;
 140                 mz1p17->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 141                 mz1p17->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 142         }
 143         dma->set_context_memory(memory);
 144         dma->set_context_ch1(fdc);
 145         pio->set_context_port_a(not_data0, SIG_NOT_INPUT, 0x01, 0);
 146         pio->set_context_port_a(not_data1, SIG_NOT_INPUT, 0x02, 0);
 147         pio->set_context_port_a(not_data2, SIG_NOT_INPUT, 0x04, 0);
 148         pio->set_context_port_a(not_data3, SIG_NOT_INPUT, 0x08, 0);
 149         pio->set_context_port_a(not_data4, SIG_NOT_INPUT, 0x10, 0);
 150         pio->set_context_port_a(not_data5, SIG_NOT_INPUT, 0x20, 0);
 151         pio->set_context_port_a(not_data6, SIG_NOT_INPUT, 0x40, 0);
 152         pio->set_context_port_a(not_data7, SIG_NOT_INPUT, 0x80, 0);
 153         pio->set_context_port_c(keyboard, SIG_KEYBOARD_INPUT, 0x03, 0);
 154         pio->set_context_port_c(pic, SIG_I8259_IR2 | SIG_I8259_CHIP0, 0x08, 0);
 155         pio->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x20, 0);
 156         pic->set_context_cpu(cpu);
 157         div->set_context_2qb(ctc0, SIG_Z80CTC_TRIG_3, 1);
 158 #if defined(_MZ6500) || defined(_MZ6550)
 159         div->set_context_1qb(ctc1, SIG_Z80CTC_TRIG_0, 1);
 160         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_1, 1);
 161         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_2, 1);
 162         div->set_context_2qd(ctc1, SIG_Z80CTC_TRIG_3, 1);
 163 #endif
 164         rtc->set_context_alarm(pic, SIG_I8259_IR0 | SIG_I8259_CHIP1, 1);
 165         gdc->set_vram_ptr(memory->get_vram(), 0x80000);
 166         gdc->set_context_vsync(pic, SIG_I8259_IR0 | SIG_I8259_CHIP0, 1);
 167         fdc->set_context_irq(pic, SIG_I8259_IR1 | SIG_I8259_CHIP1, 1);
 168         fdc->set_context_drq(dma, SIG_I8237_CH1, 1);
 169         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP0, 0x20, 0);
 170         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP1, 0x40, 0);
 171         psg->set_context_port_a(memory, SIG_MEMORY_BANK, 0xe0, 0);
 172         ctc0->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 173         ctc0->set_context_zc0(div, SIG_LS393_CLK, 1);
 174         ctc0->set_context_zc1(sio, SIG_Z80SIO_TX_CLK_CH0, 1);
 175         ctc0->set_context_zc1(sio, SIG_Z80SIO_RX_CLK_CH0, 1);
 176         ctc0->set_context_zc2(sio, SIG_Z80SIO_TX_CLK_CH1, 1);
 177         ctc0->set_context_zc2(sio, SIG_Z80SIO_RX_CLK_CH1, 1);
 178 #if defined(_MZ6500) || defined(_MZ6550)
 179         ctc0->set_context_child(ctc1);
 180         ctc1->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 181 #endif
 182         sio->set_context_intr(pic, SIG_I8259_IR1 | SIG_I8259_CHIP0);
 183
 184         not_data0->set_context_out(printer, SIG_PRINTER_DATA, 0x01);
 185         not_data1->set_context_out(printer, SIG_PRINTER_DATA, 0x02);
 186         not_data2->set_context_out(printer, SIG_PRINTER_DATA, 0x04);
 187         not_data3->set_context_out(printer, SIG_PRINTER_DATA, 0x08);
 188         not_data4->set_context_out(printer, SIG_PRINTER_DATA, 0x10);
 189         not_data5->set_context_out(printer, SIG_PRINTER_DATA, 0x20);
 190         not_data6->set_context_out(printer, SIG_PRINTER_DATA, 0x40);
 191         not_data7->set_context_out(printer, SIG_PRINTER_DATA, 0x80);
 192         not_busy->set_context_out(pio, SIG_I8255_PORT_B, 0x01);
 193         display->set_vram_ptr(memory->get_vram());
 194         display->set_sync_ptr(gdc->get_sync());
 195         display->set_ra_ptr(gdc->get_ra());
 196         display->set_cs_ptr(gdc->get_cs());
 197         display->set_ead_ptr(gdc->get_ead());
 198         keyboard->set_context_pio(pio);
 199         keyboard->set_context_pic(pic);
 200         memory->set_context_cpu(cpu);
 201         sysport->set_context_fdc(fdc);
 202         sysport->set_context_ctc(ctc0);
 203         sysport->set_context_sio(sio);
 204
 205         // cpu bus
 206         cpu->set_context_mem(memory);
 207         cpu->set_context_io(io);
 208         cpu->set_context_intr(pic);
 209 #ifdef SINGLE_MODE_DMA
 210         cpu->set_context_dma(dma);
 211 #endif
 212 #ifdef USE_DEBUGGER
 213         cpu->set_context_debugger(new DEBUGGER(this, emu));
 214 #endif
 215
 216         // i/o bus
 217         io->set_iomap_range_rw(0x00, 0x0f, dma);
 218         io->set_iomap_range_rw(0x10, 0x1f, pio);
 219         io->set_iomap_range_rw(0x20, 0x2f, fdc);
 220         for(int i = 0x30; i < 0x40; i += 2) {
 221                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP0 | ((i >> 1) & 1));
 222         }
 223         for(int i = 0x40; i < 0x50; i += 2) {
 224                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP1 | ((i >> 1) & 1));
 225         }
 226         io->set_iomap_range_w(0x50, 0x5f, memory);
 227         io->set_iomap_range_r(0x60, 0x6f, sysport);
 228         io->set_iomap_range_w(0x70, 0x7f, sysport);
 229 #if defined(_MZ6500) || defined(_MZ6550)
 230         io->set_iomap_single_rw(0xcd, memory);
 231 #endif
 232         for(int i = 0x100; i < 0x110; i += 2) {
 233                 io->set_iomap_alias_rw(i, gdc, (i >> 1) & 1);
 234         }
 235         io->set_iomap_range_rw(0x110, 0x17f, display);
 236         io->set_iomap_range_rw(0x200, 0x20f, sio);
 237         io->set_iomap_range_rw(0x210, 0x21f, ctc0);
 238         io->set_iomap_range_rw(0x220, 0x22f, rtc);
 239         for(int i = 0x230; i < 0x240; i++) {
 240                 io->set_iomap_alias_rw(i, psg, ~i & 1);
 241         }
 242         io->set_iomap_range_r(0x240, 0x25f, sysport);
 243         io->set_iomap_range_w(0x260, 0x26f, sysport);
 244         io->set_iomap_range_r(0x270, 0x27f, sysport);
 245
 246         // initialize all devices
 247         for(DEVICE* device = first_device; device; device = device->next_device) {
 248                 device->initialize();
 249         }
 250         for(int i = 0; i < 4; i++) {
 251 #if defined(_MZ6500) || defined(_MZ6550)
 252                 fdc->set_drive_type(i, DRIVE_TYPE_2HD);
 253 #else
 254                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 255 #endif
 256         }
 257 }
 258
 259 VM::~VM()
 260 {
 261         // delete all devices
 262         for(DEVICE* device = first_device; device;) {
 263                 DEVICE *next_device = device->next_device;
 264                 device->release();
 265                 delete device;
 266                 device = next_device;
 267         }
 268 }
 269
 270 DEVICE* VM::get_device(int id)
 271 {
 272         for(DEVICE* device = first_device; device; device = device->next_device) {
 273                 if(device->this_device_id == id) {
 274                         return device;
 275                 }
 276         }
 277         return NULL;
 278 }
 279
 280 // ----------------------------------------------------------------------------
 281 // drive virtual machine
 282 // ----------------------------------------------------------------------------
 283
 284 void VM::reset()
 285 {
 286         // reset all devices
 287         for(DEVICE* device = first_device; device; device = device->next_device) {
 288                 device->reset();
 289         }
 290         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 291         pio->write_signal(SIG_I8255_PORT_B, 0x03, 0x07);        // busy = ~(low), pe = ~(low), pdtr = ~(high)
 292         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 293 }
 294
 295 void VM::special_reset()
 296 {
 297         // nmi
 298         cpu->write_signal(SIG_CPU_NMI, 1, 1);
 299         sysport->nmi_reset();
 300 }
 301
 302 void VM::run()
 303 {
 304         event->drive();
 305 }
 306
 307 double VM::get_frame_rate()
 308 {
 309         return event->get_frame_rate();
 310 }
 311
 312 // ----------------------------------------------------------------------------
 313 // debugger
 314 // ----------------------------------------------------------------------------
 315
 316 #ifdef USE_DEBUGGER
 317 DEVICE *VM::get_cpu(int index)
 318 {
 319         if(index == 0) {
 320                 return cpu;
 321         }
 322         return NULL;
 323 }
 324 #endif
 325
 326 // ----------------------------------------------------------------------------
 327 // draw screen
 328 // ----------------------------------------------------------------------------
 329
 330 void VM::draw_screen()
 331 {
 332         display->draw_screen();
 333 }
 334
 335 uint32_t VM::get_access_lamp_status()
 336 {
 337         uint32_t status = fdc->read_signal(0);
 338         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 339 }
 340
 341 // ----------------------------------------------------------------------------
 342 // soud manager
 343 // ----------------------------------------------------------------------------
 344
 345 void VM::initialize_sound(int rate, int samples)
 346 {
 347         // init sound manager
 348         event->initialize_sound(rate, samples);
 349
 350         // init sound gen
 351         psg->initialize_sound(rate, 4000000, samples, 0, 0);
 352 }
 353
 354 uint16_t* VM::create_sound(int* extra_frames)
 355 {
 356         return event->create_sound(extra_frames);
 357 }
 358
 359 int VM::get_sound_buffer_ptr()
 360 {
 361         return event->get_sound_buffer_ptr();
 362 }
 363
 364 #ifdef USE_SOUND_VOLUME
 365 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 366 {
 367         if(ch == 0) {
 368                 psg->set_volume(1, decibel_l, decibel_r);
 369         }
 370 #if defined(USE_SOUND_FILES)
 371         else if(ch == 1) {
 372                 fdc->set_volume(UPD765A_SND_TYPE_SEEK, decibel_l, decibel_r);
 373         }
 374 #endif
 375 }
 376 #endif
 377
 378 // ----------------------------------------------------------------------------
 379 // notify key
 380 // ----------------------------------------------------------------------------
 381
 382 void VM::key_down(int code, bool repeat)
 383 {
 384         keyboard->key_down(code);
 385 }
 386
 387 void VM::key_up(int code)
 388 {
 389 //      keyboard->key_up(code);
 390 }
 391
 392 // ----------------------------------------------------------------------------
 393 // user interface
 394 // ----------------------------------------------------------------------------
 395
 396 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 397 {
 398         fdc->open_disk(drv, file_path, bank);
 399 }
 400
 401 void VM::close_floppy_disk(int drv)
 402 {
 403         fdc->close_disk(drv);
 404 }
 405
 406 bool VM::is_floppy_disk_inserted(int drv)
 407 {
 408         return fdc->is_disk_inserted(drv);
 409 }
 410
 411 void VM::is_floppy_disk_protected(int drv, bool value)
 412 {
 413         fdc->is_disk_protected(drv, value);
 414 }
 415
 416 bool VM::is_floppy_disk_protected(int drv)
 417 {
 418         return fdc->is_disk_protected(drv);
 419 }
 420
 421 bool VM::is_frame_skippable()
 422 {
 423         return event->is_frame_skippable();
 424 }
 425
 426 void VM::update_config()
 427 {
 428         for(DEVICE* device = first_device; device; device = device->next_device) {
 429                 device->update_config();
 430         }
 431 }
 432
 433 #define STATE_VERSION   3
 434
 435 void VM::save_state(FILEIO* state_fio)
 436 {
 437         state_fio->FputUint32(STATE_VERSION);
 438
 439         for(DEVICE* device = first_device; device; device = device->next_device) {
 440                 device->save_state(state_fio);
 441         }
 442 }
 443
 444 bool VM::load_state(FILEIO* state_fio)
 445 {
 446         if(state_fio->FgetUint32() != STATE_VERSION) {
 447                 return false;
 448         }
 449         for(DEVICE* device = first_device; device; device = device->next_device) {
 450                 if(!device->load_state(state_fio)) {
 451                         return false;
 452                 }
 453         }
 454         return true;
 455 }
 456