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
 122         if(config.printer_device_type == 0) {
 123                 PRNFILE *prnfile = (PRNFILE *)printer;
 124                 prnfile->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 125                 prnfile->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 126         } else if(config.printer_device_type == 1) {
 127                 MZ1P17 *mz1p17 = (MZ1P17 *)printer;
 128                 mz1p17->mode = MZ1P17_MODE_MZ1;
 129                 mz1p17->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 130                 mz1p17->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 131         }
 132         dma->set_context_memory(memory);
 133         dma->set_context_ch1(fdc);
 134         pio->set_context_port_a(not_data1, SIG_NOT_INPUT, 0x01, 0);
 135         pio->set_context_port_a(not_data2, SIG_NOT_INPUT, 0x02, 0);
 136         pio->set_context_port_a(not_data3, SIG_NOT_INPUT, 0x04, 0);
 137         pio->set_context_port_a(not_data4, SIG_NOT_INPUT, 0x08, 0);
 138         pio->set_context_port_a(not_data5, SIG_NOT_INPUT, 0x10, 0);
 139         pio->set_context_port_a(not_data6, SIG_NOT_INPUT, 0x20, 0);
 140         pio->set_context_port_a(not_data7, SIG_NOT_INPUT, 0x40, 0);
 141         pio->set_context_port_a(not_data8, SIG_NOT_INPUT, 0x80, 0);
 142         pio->set_context_port_c(keyboard, SIG_KEYBOARD_INPUT, 0x03, 0);
 143         pio->set_context_port_c(pic, SIG_I8259_IR2 | SIG_I8259_CHIP0, 0x08, 0);
 144         pio->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x20, 0);
 145         pic->set_context_cpu(cpu);
 146         div->set_context_2qb(ctc0, SIG_Z80CTC_TRIG_3, 1);
 147 #if defined(_MZ6500) || defined(_MZ6550)
 148         div->set_context_1qb(ctc1, SIG_Z80CTC_TRIG_0, 1);
 149         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_1, 1);
 150         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_2, 1);
 151         div->set_context_2qd(ctc1, SIG_Z80CTC_TRIG_3, 1);
 152 #endif
 153         rtc->set_context_alarm(pic, SIG_I8259_IR0 | SIG_I8259_CHIP1, 1);
 154         gdc->set_vram_ptr(memory->get_vram(), 0x80000);
 155         gdc->set_context_vsync(pic, SIG_I8259_IR0 | SIG_I8259_CHIP0, 1);
 156         fdc->set_context_irq(pic, SIG_I8259_IR1 | SIG_I8259_CHIP1, 1);
 157         fdc->set_context_drq(dma, SIG_I8237_CH1, 1);
 158         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP0, 0x20, 0);
 159         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP1, 0x40, 0);
 160         psg->set_context_port_a(memory, SIG_MEMORY_BANK, 0xe0, 0);
 161         ctc0->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 162         ctc0->set_context_zc0(div, SIG_LS393_CLK, 1);
 163         ctc0->set_context_zc1(sio, SIG_Z80SIO_TX_CLK_CH0, 1);
 164         ctc0->set_context_zc1(sio, SIG_Z80SIO_RX_CLK_CH0, 1);
 165         ctc0->set_context_zc2(sio, SIG_Z80SIO_TX_CLK_CH1, 1);
 166         ctc0->set_context_zc2(sio, SIG_Z80SIO_RX_CLK_CH1, 1);
 167 #if defined(_MZ6500) || defined(_MZ6550)
 168         ctc0->set_context_child(ctc1);
 169         ctc1->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 170 #endif
 171         sio->set_context_intr(pic, SIG_I8259_IR1 | SIG_I8259_CHIP0);
 172
 173         not_data1->set_context_out(printer, SIG_PRINTER_DATA, 0x01);
 174         not_data2->set_context_out(printer, SIG_PRINTER_DATA, 0x02);
 175         not_data3->set_context_out(printer, SIG_PRINTER_DATA, 0x04);
 176         not_data4->set_context_out(printer, SIG_PRINTER_DATA, 0x08);
 177         not_data5->set_context_out(printer, SIG_PRINTER_DATA, 0x10);
 178         not_data6->set_context_out(printer, SIG_PRINTER_DATA, 0x20);
 179         not_data7->set_context_out(printer, SIG_PRINTER_DATA, 0x40);
 180         not_data8->set_context_out(printer, SIG_PRINTER_DATA, 0x80);
 181         not_busy->set_context_out(pio, SIG_I8255_PORT_B, 0x01);
 182         display->set_vram_ptr(memory->get_vram());
 183         display->set_sync_ptr(gdc->get_sync());
 184         display->set_ra_ptr(gdc->get_ra());
 185         display->set_cs_ptr(gdc->get_cs());
 186         display->set_ead_ptr(gdc->get_ead());
 187         keyboard->set_context_pio(pio);
 188         keyboard->set_context_pic(pic);
 189         memory->set_context_cpu(cpu);
 190         sysport->set_context_fdc(fdc);
 191         sysport->set_context_ctc(ctc0);
 192         sysport->set_context_sio(sio);
 193
 194         // cpu bus
 195         cpu->set_context_mem(memory);
 196         cpu->set_context_io(io);
 197         cpu->set_context_intr(pic);
 198 #ifdef SINGLE_MODE_DMA
 199         cpu->set_context_dma(dma);
 200 #endif
 201 #ifdef USE_DEBUGGER
 202         cpu->set_context_debugger(new DEBUGGER(this, emu));
 203 #endif
 204
 205         // i/o bus
 206         io->set_iomap_range_rw(0x00, 0x0f, dma);
 207         io->set_iomap_range_rw(0x10, 0x1f, pio);
 208         io->set_iomap_range_rw(0x20, 0x2f, fdc);
 209         for(int i = 0x30; i < 0x40; i += 2) {
 210                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP0 | ((i >> 1) & 1));
 211         }
 212         for(int i = 0x40; i < 0x50; i += 2) {
 213                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP1 | ((i >> 1) & 1));
 214         }
 215         io->set_iomap_range_w(0x50, 0x5f, memory);
 216         io->set_iomap_range_r(0x60, 0x6f, sysport);
 217         io->set_iomap_range_w(0x70, 0x7f, sysport);
 218 #if defined(_MZ6500) || defined(_MZ6550)
 219         io->set_iomap_single_rw(0xcd, memory);
 220 #endif
 221         for(int i = 0x100; i < 0x110; i += 2) {
 222                 io->set_iomap_alias_rw(i, gdc, (i >> 1) & 1);
 223         }
 224         io->set_iomap_range_rw(0x110, 0x17f, display);
 225         io->set_iomap_range_rw(0x200, 0x20f, sio);
 226         io->set_iomap_range_rw(0x210, 0x21f, ctc0);
 227         io->set_iomap_range_rw(0x220, 0x22f, rtc);
 228         for(int i = 0x230; i < 0x240; i++) {
 229                 io->set_iomap_alias_rw(i, psg, ~i & 1);
 230         }
 231         io->set_iomap_range_r(0x240, 0x25f, sysport);
 232         io->set_iomap_range_w(0x260, 0x26f, sysport);
 233         io->set_iomap_range_r(0x270, 0x27f, sysport);
 234
 235         // initialize all devices
 236         for(DEVICE* device = first_device; device; device = device->next_device) {
 237                 device->initialize();
 238         }
 239         for(int i = 0; i < 4; i++) {
 240 #if defined(_MZ6500) || defined(_MZ6550)
 241                 fdc->set_drive_type(i, DRIVE_TYPE_2HD);
 242 #else
 243                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 244 #endif
 245         }
 246 }
 247
 248 VM::~VM()
 249 {
 250         // delete all devices
 251         for(DEVICE* device = first_device; device;) {
 252                 DEVICE *next_device = device->next_device;
 253                 device->release();
 254                 delete device;
 255                 device = next_device;
 256         }
 257 }
 258
 259 DEVICE* VM::get_device(int id)
 260 {
 261         for(DEVICE* device = first_device; device; device = device->next_device) {
 262                 if(device->this_device_id == id) {
 263                         return device;
 264                 }
 265         }
 266         return NULL;
 267 }
 268
 269 // ----------------------------------------------------------------------------
 270 // drive virtual machine
 271 // ----------------------------------------------------------------------------
 272
 273 void VM::reset()
 274 {
 275         // reset all devices
 276         for(DEVICE* device = first_device; device; device = device->next_device) {
 277                 device->reset();
 278         }
 279         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 280         pio->write_signal(SIG_I8255_PORT_B, 0x03, 0x07);        // busy = ~(low), pe = ~(low), pdtr = ~(high)
 281         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 282 }
 283
 284 void VM::special_reset()
 285 {
 286         // nmi
 287         cpu->write_signal(SIG_CPU_NMI, 1, 1);
 288         sysport->nmi_reset();
 289 }
 290
 291 void VM::run()
 292 {
 293         event->drive();
 294 }
 295
 296 double VM::get_frame_rate()
 297 {
 298         return event->get_frame_rate();
 299 }
 300
 301 // ----------------------------------------------------------------------------
 302 // debugger
 303 // ----------------------------------------------------------------------------
 304
 305 #ifdef USE_DEBUGGER
 306 DEVICE *VM::get_cpu(int index)
 307 {
 308         if(index == 0) {
 309                 return cpu;
 310         }
 311         return NULL;
 312 }
 313 #endif
 314
 315 // ----------------------------------------------------------------------------
 316 // draw screen
 317 // ----------------------------------------------------------------------------
 318
 319 void VM::draw_screen()
 320 {
 321         display->draw_screen();
 322 }
 323
 324 uint32_t VM::get_access_lamp_status()
 325 {
 326         uint32_t status = fdc->read_signal(0);
 327         return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 328 }
 329
 330 // ----------------------------------------------------------------------------
 331 // soud manager
 332 // ----------------------------------------------------------------------------
 333
 334 void VM::initialize_sound(int rate, int samples)
 335 {
 336         // init sound manager
 337         event->initialize_sound(rate, samples);
 338
 339         // init sound gen
 340         psg->initialize_sound(rate, 4000000, samples, 0, 0);
 341 }
 342
 343 uint16_t* VM::create_sound(int* extra_frames)
 344 {
 345         return event->create_sound(extra_frames);
 346 }
 347
 348 int VM::get_sound_buffer_ptr()
 349 {
 350         return event->get_sound_buffer_ptr();
 351 }
 352
 353 #ifdef USE_SOUND_VOLUME
 354 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 355 {
 356         if(ch == 0) {
 357                 psg->set_volume(1, decibel_l, decibel_r);
 358         }
 359 }
 360 #endif
 361
 362 // ----------------------------------------------------------------------------
 363 // notify key
 364 // ----------------------------------------------------------------------------
 365
 366 void VM::key_down(int code, bool repeat)
 367 {
 368         keyboard->key_down(code);
 369 }
 370
 371 void VM::key_up(int code)
 372 {
 373 //      keyboard->key_up(code);
 374 }
 375
 376 // ----------------------------------------------------------------------------
 377 // user interface
 378 // ----------------------------------------------------------------------------
 379
 380 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 381 {
 382         fdc->open_disk(drv, file_path, bank);
 383 }
 384
 385 void VM::close_floppy_disk(int drv)
 386 {
 387         fdc->close_disk(drv);
 388 }
 389
 390 bool VM::is_floppy_disk_inserted(int drv)
 391 {
 392         return fdc->is_disk_inserted(drv);
 393 }
 394
 395 void VM::is_floppy_disk_protected(int drv, bool value)
 396 {
 397         fdc->is_disk_protected(drv, value);
 398 }
 399
 400 bool VM::is_floppy_disk_protected(int drv)
 401 {
 402         return fdc->is_disk_protected(drv);
 403 }
 404
 405 bool VM::is_frame_skippable()
 406 {
 407         return event->is_frame_skippable();
 408 }
 409
 410 void VM::update_config()
 411 {
 412         for(DEVICE* device = first_device; device; device = device->next_device) {
 413                 device->update_config();
 414         }
 415 }
 416
 417 #define STATE_VERSION   2
 418
 419 void VM::save_state(FILEIO* state_fio)
 420 {
 421         state_fio->FputUint32(STATE_VERSION);
 422
 423         for(DEVICE* device = first_device; device; device = device->next_device) {
 424                 device->save_state(state_fio);
 425         }
 426 }
 427
 428 bool VM::load_state(FILEIO* state_fio)
 429 {
 430         if(state_fio->FgetUint32() != STATE_VERSION) {
 431                 return false;
 432         }
 433         for(DEVICE* device = first_device; device; device = device->next_device) {
 434                 if(!device->load_state(state_fio)) {
 435                         return false;
 436                 }
 437         }
 438         return true;
 439 }
 440