source/src/vm/qc10/qc10.cpp

   1 /*
   2         EPSON QC-10 Emulator 'eQC-10'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.02.13 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "qc10.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../disk.h"
  16 #include "../hd146818p.h"
  17 #include "../i8237.h"
  18 #include "../i8253.h"
  19 #include "../i8255.h"
  20 #include "../i8259.h"
  21 #include "../io.h"
  22 #include "../noise.h"
  23 #include "../pcm1bit.h"
  24 #include "../upd7220.h"
  25 #include "../upd765a.h"
  26 #include "../z80.h"
  27 #include "../z80sio.h"
  28
  29 #ifdef USE_DEBUGGER
  30 #include "../debugger.h"
  31 #endif
  32
  33 #include "display.h"
  34 #include "floppy.h"
  35 #include "keyboard.h"
  36 #include "memory.h"
  37 #include "mfont.h"
  38
  39 // ----------------------------------------------------------------------------
  40 // initialize
  41 // ----------------------------------------------------------------------------
  42
  43 VM::VM(EMU* parent_emu) : emu(parent_emu)
  44 {
  45         // create devices
  46         first_device = last_device = NULL;
  47         dummy = new DEVICE(this, emu);  // must be 1st device
  48         event = new EVENT(this, emu);   // must be 2nd device
  49         dummy->set_device_name(_T("1st Dummy"));
  50
  51         rtc = new HD146818P(this, emu);
  52         dma0 = new I8237(this, emu);
  53         dma0->set_device_name(_T("8237 DMAC (FDC/GDC)"));
  54         dma1 = new I8237(this, emu);
  55         dma1->set_device_name(_T("8237 DMAC (User)"));
  56         pit0 = new I8253(this, emu);
  57         pit0->set_device_name(_T("8253 PIT (Sound/PIC)"));
  58         pit1 = new I8253(this, emu);
  59         pit1->set_device_name(_T("8253 PIT (Sound/SIO)"));
  60         pio = new I8255(this, emu);
  61         pic = new I8259(this, emu);
  62         io = new IO(this, emu);
  63         pcm = new PCM1BIT(this, emu);
  64         gdc = new UPD7220(this, emu);
  65         fdc = new UPD765A(this, emu);
  66         fdc->set_context_noise_seek(new NOISE(this, emu));
  67         fdc->set_context_noise_head_down(new NOISE(this, emu));
  68         fdc->set_context_noise_head_up(new NOISE(this, emu));
  69         cpu = new Z80(this, emu);
  70         sio = new Z80SIO(this, emu);    // uPD7201
  71
  72         display = new DISPLAY(this, emu);
  73         floppy = new FLOPPY(this, emu);
  74         keyboard = new KEYBOARD(this, emu);
  75         memory = new MEMORY(this, emu);
  76         mfont = new MFONT(this, emu);
  77         // set contexts
  78         event->set_context_cpu(cpu);
  79         event->set_context_sound(pcm);
  80         event->set_context_sound(fdc->get_context_noise_seek());
  81         event->set_context_sound(fdc->get_context_noise_head_down());
  82         event->set_context_sound(fdc->get_context_noise_head_up());
  83
  84         rtc->set_context_intr(pic, SIG_I8259_IR2 | SIG_I8259_CHIP1, 1);
  85         dma0->set_context_memory(memory);
  86         dma0->set_context_ch0(fdc);
  87         dma0->set_context_ch1(gdc);
  88 #ifdef SINGLE_MODE_DMA
  89         dma0->set_context_child_dma(dma1);
  90 #endif
  91         dma1->set_context_memory(memory);
  92         pit0->set_context_ch0(memory, SIG_MEMORY_PCM, 1);
  93         pit0->set_context_ch1(pic, SIG_I8259_IR5 | SIG_I8259_CHIP1, 1);
  94         pit0->set_context_ch2(pic, SIG_I8259_IR1 | SIG_I8259_CHIP0, 1);
  95         pit0->set_constant_clock(2, CPU_CLOCKS >> 1);   // 1.9968MHz
  96         pit1->set_context_ch0(pcm, SIG_PCM1BIT_SIGNAL, 1);
  97         pit1->set_context_ch1(pit0, SIG_I8253_CLOCK_0, 1);
  98         pit1->set_context_ch1(pit0, SIG_I8253_CLOCK_1, 1);
  99         pit1->set_context_ch1(sio, SIG_Z80SIO_TX_CLK_CH0, 1);
 100         pit1->set_context_ch1(sio, SIG_Z80SIO_RX_CLK_CH0, 1);
 101         pit1->set_context_ch2(sio, SIG_Z80SIO_TX_CLK_CH1, 1);
 102         pit1->set_context_ch2(sio, SIG_Z80SIO_RX_CLK_CH1, 1);
 103         pit1->set_constant_clock(0, CPU_CLOCKS >> 1);   // 1.9968MHz
 104         pit1->set_constant_clock(1, CPU_CLOCKS >> 1);   // 1.9968MHz
 105         pit1->set_constant_clock(2, CPU_CLOCKS >> 1);   // 1.9968MHz
 106         pio->set_context_port_c(pic, SIG_I8259_IR0 | SIG_I8259_CHIP1, 8, 0);
 107         pic->set_context_cpu(cpu);
 108         gdc->set_context_drq(dma0, SIG_I8237_CH1, 1);
 109         gdc->set_vram_ptr(display->get_vram(), VRAM_SIZE);
 110         // IR5 of I8259 #0 is from light pen
 111         fdc->set_context_irq(pic, SIG_I8259_IR6 | SIG_I8259_CHIP0, 1);
 112         fdc->set_context_irq(memory, SIG_MEMORY_FDC_IRQ, 1);
 113         fdc->set_context_drq(dma0, SIG_I8237_CH0, 1);
 114         sio->set_context_intr(pic, SIG_I8259_IR4 | SIG_I8259_CHIP0);
 115         sio->set_context_send(0, keyboard, SIG_KEYBOARD_RECV);
 116 //      sio->set_tx_clock(0, 1200 * 16);        // 1200 baud for keyboard
 117 //      sio->set_rx_clock(0, 1200 * 16);        // clock is from 8253 ch1 (1.9968MHz/104)
 118 //      sio->set_tx_clock(1, 9600 * 16);        // 9600 baud for RS-232C
 119 //      sio->set_rx_clock(1, 9600 * 16);        // clock is from 8253 ch2 (1.9968MHz/13)
 120
 121         display->set_context_gdc(gdc);
 122         display->set_sync_ptr(gdc->get_sync());
 123         display->set_zoom_ptr(gdc->get_zoom());
 124         display->set_ra_ptr(gdc->get_ra());
 125         display->set_cs_ptr(gdc->get_cs());
 126         display->set_ead_ptr(gdc->get_ead());
 127         floppy->set_context_fdc(fdc);
 128         floppy->set_context_mem(memory);
 129         keyboard->set_context_sio(sio);
 130         memory->set_context_pit(pit0);
 131         memory->set_context_pcm(pcm);
 132         memory->set_context_fdc(fdc);
 133         mfont->set_context_pic(pic);
 134
 135         // cpu bus
 136         cpu->set_context_mem(memory);
 137         cpu->set_context_io(io);
 138         cpu->set_context_intr(pic);
 139 #ifdef SINGLE_MODE_DMA
 140         cpu->set_context_dma(dma0);
 141 #endif
 142 #ifdef USE_DEBUGGER
 143         cpu->set_context_debugger(new DEBUGGER(this, emu));
 144 #endif
 145
 146         // i/o bus
 147         io->set_iomap_range_rw(0x00, 0x03, pit0);
 148         io->set_iomap_range_rw(0x04, 0x07, pit1);
 149         io->set_iomap_alias_rw(0x08, pic, I8259_ADDR_CHIP0 | 0);
 150         io->set_iomap_alias_rw(0x09, pic, I8259_ADDR_CHIP0 | 1);
 151         io->set_iomap_alias_rw(0x0c, pic, I8259_ADDR_CHIP1 | 0);
 152         io->set_iomap_alias_rw(0x0d, pic, I8259_ADDR_CHIP1 | 1);
 153         io->set_iomap_alias_rw(0x10, sio, 0);
 154         io->set_iomap_alias_rw(0x11, sio, 2);
 155         io->set_iomap_alias_rw(0x12, sio, 1);
 156         io->set_iomap_alias_rw(0x13, sio, 3);
 157         io->set_iomap_range_rw(0x14, 0x17, pio);
 158         io->set_iomap_range_rw(0x18, 0x1b, memory);
 159         io->set_iomap_range_w(0x1c, 0x23, memory);
 160         io->set_iomap_range_rw(0x2c, 0x2d, display);
 161         io->set_iomap_range_r(0x30, 0x33, memory);
 162         io->set_iomap_range_w(0x30, 0x33, floppy);
 163         io->set_iomap_range_rw(0x34, 0x35, fdc);
 164         io->set_iomap_range_rw(0x38, 0x3b, gdc);
 165         io->set_iomap_range_rw(0x3c, 0x3d, rtc);
 166         io->set_iomap_range_rw(0x40, 0x4f, dma0);
 167         io->set_iomap_range_rw(0x50, 0x5f, dma1);
 168         io->set_iomap_range_rw(0xfc, 0xfd, mfont);
 169
 170         // initialize all devices
 171         for(DEVICE* device = first_device; device; device = device->next_device) {
 172                 device->initialize();
 173         }
 174         //pcm->set_realtime_render(true);
 175         for(int i = 0; i < 4; i++) {
 176                 fdc->set_drive_type(i, DRIVE_TYPE_2D);
 177         }
 178 }
 179
 180 VM::~VM()
 181 {
 182         // delete all devices
 183         for(DEVICE* device = first_device; device;) {
 184                 DEVICE *next_device = device->next_device;
 185                 device->release();
 186                 delete device;
 187                 device = next_device;
 188         }
 189 }
 190
 191 DEVICE* VM::get_device(int id)
 192 {
 193         for(DEVICE* device = first_device; device; device = device->next_device) {
 194                 if(device->this_device_id == id) {
 195                         return device;
 196                 }
 197         }
 198         return NULL;
 199 }
 200
 201 // ----------------------------------------------------------------------------
 202 // drive virtual machine
 203 // ----------------------------------------------------------------------------
 204
 205 void VM::reset()
 206 {
 207         // reset all devices
 208         for(DEVICE* device = first_device; device; device = device->next_device) {
 209                 device->reset();
 210         }
 211 }
 212
 213 void VM::run()
 214 {
 215         event->drive();
 216 }
 217
 218 double VM::get_frame_rate()
 219 {
 220         return event->get_frame_rate();
 221 }
 222
 223 // ----------------------------------------------------------------------------
 224 // debugger
 225 // ----------------------------------------------------------------------------
 226
 227 #ifdef USE_DEBUGGER
 228 DEVICE *VM::get_cpu(int index)
 229 {
 230         if(index == 0) {
 231                 return cpu;
 232         }
 233         return NULL;
 234 }
 235 #endif
 236
 237 // ----------------------------------------------------------------------------
 238 // draw screen
 239 // ----------------------------------------------------------------------------
 240
 241 void VM::draw_screen()
 242 {
 243         display->draw_screen();
 244 }
 245
 246 // ----------------------------------------------------------------------------
 247 // soud manager
 248 // ----------------------------------------------------------------------------
 249
 250 void VM::initialize_sound(int rate, int samples)
 251 {
 252         // init sound manager
 253         event->initialize_sound(rate, samples);
 254
 255         // init sound gen
 256         pcm->initialize_sound(rate, 4000);
 257 }
 258
 259 uint16_t* VM::create_sound(int* extra_frames)
 260 {
 261         return event->create_sound(extra_frames);
 262 }
 263
 264 int VM::get_sound_buffer_ptr()
 265 {
 266         return event->get_sound_buffer_ptr();
 267 }
 268
 269 #ifdef USE_SOUND_VOLUME
 270 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 271 {
 272         if(ch == 0) {
 273                 pcm->set_volume(0, decibel_l, decibel_r);
 274         } else if(ch == 1) {
 275                 fdc->get_context_noise_seek()->set_volume(0, decibel_l, decibel_r);
 276                 fdc->get_context_noise_head_down()->set_volume(0, decibel_l, decibel_r);
 277                 fdc->get_context_noise_head_up()->set_volume(0, decibel_l, decibel_r);
 278         }
 279 }
 280 #endif
 281
 282 // ----------------------------------------------------------------------------
 283 // notify key
 284 // ----------------------------------------------------------------------------
 285
 286 void VM::key_down(int code, bool repeat)
 287 {
 288         keyboard->key_down(code);
 289 }
 290
 291 void VM::key_up(int code)
 292 {
 293         keyboard->key_up(code);
 294 }
 295
 296 // ----------------------------------------------------------------------------
 297 // user interface
 298 // ----------------------------------------------------------------------------
 299
 300 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 301 {
 302         fdc->open_disk(drv, file_path, bank);
 303 }
 304
 305 void VM::close_floppy_disk(int drv)
 306 {
 307         fdc->close_disk(drv);
 308 }
 309
 310 bool VM::is_floppy_disk_inserted(int drv)
 311 {
 312         return fdc->is_disk_inserted(drv);
 313 }
 314
 315 void VM::is_floppy_disk_protected(int drv, bool value)
 316 {
 317         fdc->is_disk_protected(drv, value);
 318 }
 319
 320 bool VM::is_floppy_disk_protected(int drv)
 321 {
 322         return fdc->is_disk_protected(drv);
 323 }
 324
 325 uint32_t VM::is_floppy_disk_accessed()
 326 {
 327         return fdc->read_signal(0);
 328 }
 329
 330 bool VM::is_frame_skippable()
 331 {
 332         return event->is_frame_skippable();
 333 }
 334
 335 void VM::update_config()
 336 {
 337         for(DEVICE* device = first_device; device; device = device->next_device) {
 338                 device->update_config();
 339         }
 340 }
 341
 342 #define STATE_VERSION   3
 343
 344 void VM::save_state(FILEIO* state_fio)
 345 {
 346         state_fio->FputUint32(STATE_VERSION);
 347
 348         for(DEVICE* device = first_device; device; device = device->next_device) {
 349                 const char *name = typeid(*device).name() + 6; // skip "class "
 350
 351                 state_fio->FputInt32(strlen(name));
 352                 state_fio->Fwrite(name, strlen(name), 1);
 353                 device->save_state(state_fio);
 354         }
 355 }
 356
 357 bool VM::load_state(FILEIO* state_fio)
 358 {
 359         if(state_fio->FgetUint32() != STATE_VERSION) {
 360                 return false;
 361         }
 362         for(DEVICE* device = first_device; device; device = device->next_device) {
 363                 const char *name = typeid(*device).name() + 6; // skip "class "
 364
 365                 if(!(state_fio->FgetInt32() == strlen(name) && state_fio->Fcompare(name, strlen(name)))) {
 366                         return false;
 367                 }
 368                 if(!device->load_state(state_fio)) {
 369                         return false;
 370                 }
 371         }
 372         return true;
 373 }
 374