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 "../noise.h"
  28 #include "../not.h"
  29 #include "../prnfile.h"
  30 #include "../rp5c01.h"
  31 #include "../upd7220.h"
  32 #include "../upd765a.h"
  33 //#include "../ym2203.h"
  34 #include "../ay_3_891x.h"
  35 #include "../z80ctc.h"
  36 #include "../z80sio.h"
  37
  38 #ifdef USE_DEBUGGER
  39 #include "../debugger.h"
  40 #endif
  41
  42 #include "display.h"
  43 #include "keyboard.h"
  44 #include "memory.h"
  45 #include "sysport.h"
  46
  47 // ----------------------------------------------------------------------------
  48 // initialize
  49 // ----------------------------------------------------------------------------
  50
  51 VM::VM(EMU* parent_emu) : emu(parent_emu)
  52 {
  53         // create devices
  54         first_device = last_device = NULL;
  55         dummy = new DEVICE(this, emu);  // must be 1st device
  56         event = new EVENT(this, emu);   // must be 2nd device
  57         dummy->set_device_name(_T("1st Dummy"));
  58
  59         if(config.printer_type == 0) {
  60                 printer = new PRNFILE(this, emu);
  61         } else if(config.printer_type == 1) {
  62                 printer = new MZ1P17(this, emu);
  63         } else {
  64                 printer = dummy;
  65         }
  66         dma = new I8237(this, emu);
  67         pio = new I8255(this, emu);
  68         pic = new I8259(this, emu);
  69 //#if defined(HAS_I286) || defined(HAS_I186)
  70         cpu = new I286(this, emu);
  71 //#else
  72 //      cpu = new I86(this, emu);
  73 //#endif
  74         io = new IO(this, emu);
  75         div = new LS393(this, emu);
  76         not_data0 = new NOT(this, emu);
  77         not_data0->set_device_name(_T("NOT Gate (Printer Bit0)"));
  78         not_data1 = new NOT(this, emu);
  79         not_data1->set_device_name(_T("NOT Gate (Printer Bit1)"));
  80         not_data2 = new NOT(this, emu);
  81         not_data2->set_device_name(_T("NOT Gate (Printer Bit2)"));
  82         not_data3 = new NOT(this, emu);
  83         not_data3->set_device_name(_T("NOT Gate (Printer Bit3)"));
  84         not_data4 = new NOT(this, emu);
  85         not_data4->set_device_name(_T("NOT Gate (Printer Bit4)"));
  86         not_data5 = new NOT(this, emu);
  87         not_data5->set_device_name(_T("NOT Gate (Printer Bit5)"));
  88         not_data6 = new NOT(this, emu);
  89         not_data6->set_device_name(_T("NOT Gate (Printer Bit6)"));
  90         not_data7 = new NOT(this, emu);
  91         not_data7->set_device_name(_T("NOT Gate (Printer Bit7)"));
  92         not_busy = new NOT(this, emu);
  93         not_busy->set_device_name(_T("NOT Gate (Printer Busy)"));
  94         rtc = new RP5C01(this, emu);
  95         gdc = new UPD7220(this, emu);
  96         fdc = new UPD765A(this, emu);
  97         fdc->set_context_noise_seek(new NOISE(this, emu));
  98         fdc->set_context_noise_head_down(new NOISE(this, emu));
  99         fdc->set_context_noise_head_up(new NOISE(this, emu));
 100 //      psg = new YM2203(this, emu);
 101         psg = new AY_3_891X(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
 113         // set contexts
 114         event->set_context_cpu(cpu);
 115         event->set_context_sound(psg);
 116         event->set_context_sound(fdc->get_context_noise_seek());
 117         event->set_context_sound(fdc->get_context_noise_head_down());
 118         event->set_context_sound(fdc->get_context_noise_head_up());
 119
 120         if(config.printer_type == 0) {
 121                 PRNFILE *prnfile = (PRNFILE *)printer;
 122                 prnfile->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 123                 prnfile->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 124         } else if(config.printer_type == 1) {
 125                 MZ1P17 *mz1p17 = (MZ1P17 *)printer;
 126                 mz1p17->mode = MZ1P17_MODE_MZ1;
 127                 mz1p17->set_context_busy(not_busy, SIG_NOT_INPUT, 1);
 128                 mz1p17->set_context_ack(pio, SIG_I8255_PORT_C, 0x40);
 129         }
 130         dma->set_context_memory(memory);
 131         dma->set_context_ch1(fdc);
 132         pio->set_context_port_a(not_data0, SIG_NOT_INPUT, 0x01, 0);
 133         pio->set_context_port_a(not_data1, SIG_NOT_INPUT, 0x02, 0);
 134         pio->set_context_port_a(not_data2, SIG_NOT_INPUT, 0x04, 0);
 135         pio->set_context_port_a(not_data3, SIG_NOT_INPUT, 0x08, 0);
 136         pio->set_context_port_a(not_data4, SIG_NOT_INPUT, 0x10, 0);
 137         pio->set_context_port_a(not_data5, SIG_NOT_INPUT, 0x20, 0);
 138         pio->set_context_port_a(not_data6, SIG_NOT_INPUT, 0x40, 0);
 139         pio->set_context_port_a(not_data7, SIG_NOT_INPUT, 0x80, 0);
 140         pio->set_context_port_c(keyboard, SIG_KEYBOARD_INPUT, 0x03, 0);
 141         pio->set_context_port_c(pic, SIG_I8259_IR2 | SIG_I8259_CHIP0, 0x08, 0);
 142         pio->set_context_port_c(printer, SIG_PRINTER_STROBE, 0x20, 0);
 143         pic->set_context_cpu(cpu);
 144         div->set_context_2qb(ctc0, SIG_Z80CTC_TRIG_3, 1);
 145 #if defined(_MZ6500) || defined(_MZ6550)
 146         div->set_context_1qb(ctc1, SIG_Z80CTC_TRIG_0, 1);
 147         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_1, 1);
 148         div->set_context_2qb(ctc1, SIG_Z80CTC_TRIG_2, 1);
 149         div->set_context_2qd(ctc1, SIG_Z80CTC_TRIG_3, 1);
 150 #endif
 151         rtc->set_context_alarm(pic, SIG_I8259_IR0 | SIG_I8259_CHIP1, 1);
 152         gdc->set_vram_ptr(memory->get_vram(), 0x80000);
 153         gdc->set_context_vsync(pic, SIG_I8259_IR0 | SIG_I8259_CHIP0, 1);
 154         fdc->set_context_irq(pic, SIG_I8259_IR1 | SIG_I8259_CHIP1, 1);
 155         fdc->set_context_drq(dma, SIG_I8237_CH1, 1);
 156         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP0, 0x20, 0);
 157         psg->set_context_port_a(pic, SIG_I8259_IR7 | SIG_I8259_CHIP1, 0x40, 0);
 158         psg->set_context_port_a(memory, SIG_MEMORY_BANK, 0xe0, 0);
 159         ctc0->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 160         ctc0->set_context_zc0(div, SIG_LS393_CLK, 1);
 161         ctc0->set_context_zc1(sio, SIG_Z80SIO_TX_CLK_CH0, 1);
 162         ctc0->set_context_zc1(sio, SIG_Z80SIO_RX_CLK_CH0, 1);
 163         ctc0->set_context_zc2(sio, SIG_Z80SIO_TX_CLK_CH1, 1);
 164         ctc0->set_context_zc2(sio, SIG_Z80SIO_RX_CLK_CH1, 1);
 165 #if defined(_MZ6500) || defined(_MZ6550)
 166         ctc0->set_context_child(ctc1);
 167         ctc1->set_context_intr(pic, SIG_I8259_IR5 | SIG_I8259_CHIP0);
 168 #endif
 169         sio->set_context_intr(pic, SIG_I8259_IR1 | SIG_I8259_CHIP0);
 170
 171         not_data0->set_context_out(printer, SIG_PRINTER_DATA, 0x01);
 172         not_data1->set_context_out(printer, SIG_PRINTER_DATA, 0x02);
 173         not_data2->set_context_out(printer, SIG_PRINTER_DATA, 0x04);
 174         not_data3->set_context_out(printer, SIG_PRINTER_DATA, 0x08);
 175         not_data4->set_context_out(printer, SIG_PRINTER_DATA, 0x10);
 176         not_data5->set_context_out(printer, SIG_PRINTER_DATA, 0x20);
 177         not_data6->set_context_out(printer, SIG_PRINTER_DATA, 0x40);
 178         not_data7->set_context_out(printer, SIG_PRINTER_DATA, 0x80);
 179         not_busy->set_context_out(pio, SIG_I8255_PORT_B, 0x01);
 180         display->set_vram_ptr(memory->get_vram());
 181         display->set_sync_ptr(gdc->get_sync());
 182         display->set_ra_ptr(gdc->get_ra());
 183         display->set_cs_ptr(gdc->get_cs());
 184         display->set_ead_ptr(gdc->get_ead());
 185         keyboard->set_context_pio(pio);
 186         keyboard->set_context_pic(pic);
 187         memory->set_context_cpu(cpu);
 188         sysport->set_context_fdc(fdc);
 189         sysport->set_context_ctc(ctc0);
 190         sysport->set_context_sio(sio);
 191
 192         // cpu bus
 193         cpu->set_context_mem(memory);
 194         cpu->set_context_io(io);
 195         cpu->set_context_intr(pic);
 196 #ifdef SINGLE_MODE_DMA
 197         cpu->set_context_dma(dma);
 198 #endif
 199 #ifdef USE_DEBUGGER
 200         cpu->set_context_debugger(new DEBUGGER(this, emu));
 201 #endif
 202
 203         // i/o bus
 204         io->set_iomap_range_rw(0x00, 0x0f, dma);
 205         io->set_iomap_range_rw(0x10, 0x1f, pio);
 206         io->set_iomap_range_rw(0x20, 0x2f, fdc);
 207         for(int i = 0x30; i < 0x40; i += 2) {
 208                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP0 | ((i >> 1) & 1));
 209         }
 210         for(int i = 0x40; i < 0x50; i += 2) {
 211                 io->set_iomap_alias_rw(i, pic, I8259_ADDR_CHIP1 | ((i >> 1) & 1));
 212         }
 213         io->set_iomap_range_w(0x50, 0x5f, memory);
 214         io->set_iomap_range_r(0x60, 0x6f, sysport);
 215         io->set_iomap_range_w(0x70, 0x7f, sysport);
 216 #if defined(_MZ6500) || defined(_MZ6550)
 217         io->set_iomap_single_rw(0xcd, memory);
 218 #endif
 219         for(int i = 0x100; i < 0x110; i += 2) {
 220                 io->set_iomap_alias_rw(i, gdc, (i >> 1) & 1);
 221         }
 222         io->set_iomap_range_rw(0x110, 0x17f, display);
 223         io->set_iomap_range_rw(0x200, 0x20f, sio);
 224         io->set_iomap_range_rw(0x210, 0x21f, ctc0);
 225         io->set_iomap_range_rw(0x220, 0x22f, rtc);
 226         for(int i = 0x230; i < 0x240; i++) {
 227                 io->set_iomap_alias_rw(i, psg, ~i & 1);
 228         }
 229         io->set_iomap_range_r(0x240, 0x25f, sysport);
 230         io->set_iomap_range_w(0x260, 0x26f, sysport);
 231         io->set_iomap_range_r(0x270, 0x27f, sysport);
 232
 233         // initialize all devices
 234         for(DEVICE* device = first_device; device; device = device->next_device) {
 235                 device->initialize();
 236         }
 237         for(int i = 0; i < 4; i++) {
 238 #if defined(_MZ6500) || defined(_MZ6550)
 239                 fdc->set_drive_type(i, DRIVE_TYPE_2HD);
 240 #else
 241                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 242 #endif
 243         }
 244 }
 245
 246 VM::~VM()
 247 {
 248         // delete all devices
 249         for(DEVICE* device = first_device; device;) {
 250                 DEVICE *next_device = device->next_device;
 251                 device->release();
 252                 delete device;
 253                 device = next_device;
 254         }
 255 }
 256
 257 DEVICE* VM::get_device(int id)
 258 {
 259         for(DEVICE* device = first_device; device; device = device->next_device) {
 260                 if(device->this_device_id == id) {
 261                         return device;
 262                 }
 263         }
 264         return NULL;
 265 }
 266
 267 // ----------------------------------------------------------------------------
 268 // drive virtual machine
 269 // ----------------------------------------------------------------------------
 270
 271 void VM::reset()
 272 {
 273         // reset all devices
 274         for(DEVICE* device = first_device; device; device = device->next_device) {
 275                 device->reset();
 276         }
 277         not_busy->write_signal(SIG_NOT_INPUT, 0, 0);            // busy = low
 278         pio->write_signal(SIG_I8255_PORT_B, 0x03, 0x07);        // busy = ~(low), pe = ~(low), pdtr = ~(high)
 279         pio->write_signal(SIG_I8255_PORT_C, 0x40, 0x40);        // ack = high
 280 }
 281
 282 void VM::special_reset()
 283 {
 284         // nmi
 285         cpu->write_signal(SIG_CPU_NMI, 1, 1);
 286         sysport->nmi_reset();
 287 }
 288
 289 void VM::run()
 290 {
 291         event->drive();
 292 }
 293
 294 double VM::get_frame_rate()
 295 {
 296         return event->get_frame_rate();
 297 }
 298
 299 // ----------------------------------------------------------------------------
 300 // debugger
 301 // ----------------------------------------------------------------------------
 302
 303 #ifdef USE_DEBUGGER
 304 DEVICE *VM::get_cpu(int index)
 305 {
 306         if(index == 0) {
 307                 return cpu;
 308         }
 309         return NULL;
 310 }
 311 #endif
 312
 313 // ----------------------------------------------------------------------------
 314 // draw screen
 315 // ----------------------------------------------------------------------------
 316
 317 void VM::draw_screen()
 318 {
 319         display->draw_screen();
 320 }
 321
 322 // ----------------------------------------------------------------------------
 323 // soud manager
 324 // ----------------------------------------------------------------------------
 325
 326 void VM::initialize_sound(int rate, int samples)
 327 {
 328         // init sound manager
 329         event->initialize_sound(rate, samples);
 330
 331         // init sound gen
 332         psg->initialize_sound(rate, 4000000, samples, 0, 0);
 333 }
 334
 335 uint16_t* VM::create_sound(int* extra_frames)
 336 {
 337         return event->create_sound(extra_frames);
 338 }
 339
 340 int VM::get_sound_buffer_ptr()
 341 {
 342         return event->get_sound_buffer_ptr();
 343 }
 344
 345 #ifdef USE_SOUND_VOLUME
 346 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 347 {
 348         if(ch == 0) {
 349                 psg->set_volume(1, decibel_l, decibel_r);
 350         } else if(ch == 1) {
 351                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 352                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 353                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 354         }
 355 }
 356 #endif
 357
 358 // ----------------------------------------------------------------------------
 359 // notify key
 360 // ----------------------------------------------------------------------------
 361
 362 void VM::key_down(int code, bool repeat)
 363 {
 364         keyboard->key_down(code);
 365 }
 366
 367 void VM::key_up(int code)
 368 {
 369 //      keyboard->key_up(code);
 370 }
 371
 372 bool VM::get_caps_locked()
 373 {
 374         return keyboard->get_caps_locked();
 375 }
 376
 377 bool VM::get_kana_locked()
 378 {
 379         return keyboard->get_kana_locked();
 380 }
 381
 382 // ----------------------------------------------------------------------------
 383 // user interface
 384 // ----------------------------------------------------------------------------
 385
 386 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 387 {
 388         fdc->open_disk(drv, file_path, bank);
 389 }
 390
 391 void VM::close_floppy_disk(int drv)
 392 {
 393         fdc->close_disk(drv);
 394 }
 395
 396 bool VM::is_floppy_disk_inserted(int drv)
 397 {
 398         return fdc->is_disk_inserted(drv);
 399 }
 400
 401 void VM::is_floppy_disk_protected(int drv, bool value)
 402 {
 403         fdc->is_disk_protected(drv, value);
 404 }
 405
 406 bool VM::is_floppy_disk_protected(int drv)
 407 {
 408         return fdc->is_disk_protected(drv);
 409 }
 410
 411 uint32_t VM::is_floppy_disk_accessed()
 412 {
 413         return fdc->read_signal(0);
 414 }
 415
 416 bool VM::is_frame_skippable()
 417 {
 418         return event->is_frame_skippable();
 419 }
 420
 421 void VM::update_config()
 422 {
 423         for(DEVICE* device = first_device; device; device = device->next_device) {
 424                 device->update_config();
 425         }
 426 }
 427
 428 #define STATE_VERSION   5
 429
 430 void VM::save_state(FILEIO* state_fio)
 431 {
 432         state_fio->FputUint32(STATE_VERSION);
 433
 434         for(DEVICE* device = first_device; device; device = device->next_device) {
 435                 device->save_state(state_fio);
 436         }
 437 }
 438
 439 bool VM::load_state(FILEIO* state_fio)
 440 {
 441         if(state_fio->FgetUint32() != STATE_VERSION) {
 442                 return false;
 443         }
 444         for(DEVICE* device = first_device; device; device = device->next_device) {
 445                 if(!device->load_state(state_fio)) {
 446                         return false;
 447                 }
 448         }
 449         return true;
 450 }
 451