source/src/vm/pc8201/pc8201.cpp

   1 /*
   2         NEC PC-8201 Emulator 'ePC-8201'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2009.03.31-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "pc8201.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../i8080.h"
  17 #include "../i8155.h"
  18 #include "../io.h"
  19 #include "../noise.h"
  20 #include "../pcm1bit.h"
  21 #include "../upd1990a.h"
  22
  23 #ifdef USE_DEBUGGER
  24 #include "../debugger.h"
  25 #endif
  26
  27 #include "cmt.h"
  28 #include "keyboard.h"
  29 #include "lcd.h"
  30 #include "./memory.h"
  31
  32 using PC8201::CMT;
  33 using PC8201::KEYBOARD;
  34 using PC8201::LCD;
  35 using PC8201::MEMORY;
  36
  37 // ----------------------------------------------------------------------------
  38 // initialize
  39 // ----------------------------------------------------------------------------
  40
  41 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  42 {
  43         // create devices
  44         first_device = last_device = NULL;
  45         dummy = new DEVICE(this, emu);  // must be 1st device
  46         event = new EVENT(this, emu);   // must be 2nd device
  47
  48         drec = new DATAREC(this, emu);
  49         drec->set_context_noise_play(new NOISE(this, emu));
  50         drec->set_context_noise_stop(new NOISE(this, emu));
  51         drec->set_context_noise_fast(new NOISE(this, emu));
  52         cpu = new I8080(this, emu);
  53         pio = new I8155(this, emu);
  54         io = new IO(this, emu);
  55         pcm = new PCM1BIT(this, emu);
  56         rtc = new UPD1990A(this, emu);
  57
  58         cmt = new CMT(this, emu);
  59         keyboard = new KEYBOARD(this, emu);
  60         lcd = new LCD(this, emu);
  61         memory = new MEMORY(this, emu);
  62
  63         // set contexts
  64         event->set_context_cpu(cpu);
  65         event->set_context_sound(pcm);
  66         event->set_context_sound(drec);
  67         event->set_context_sound(drec->get_context_noise_play());
  68         event->set_context_sound(drec->get_context_noise_stop());
  69         event->set_context_sound(drec->get_context_noise_fast());
  70
  71         drec->set_context_ear(cpu, SIG_I8085_SID, 1);
  72         cpu->set_context_sod(cmt, SIG_CMT_SOD, 1);
  73         pio->set_context_port_a(rtc, SIG_UPD1990A_C0, 1, 0);
  74         pio->set_context_port_a(rtc, SIG_UPD1990A_C1, 2, 0);
  75         pio->set_context_port_a(rtc, SIG_UPD1990A_C2, 4, 0);
  76         pio->set_context_port_a(rtc, SIG_UPD1990A_CLK, 8, 0);
  77         pio->set_context_port_a(rtc, SIG_UPD1990A_DIN, 0x10, 0);
  78         pio->set_context_port_a(keyboard, SIG_KEYBOARD_COLUMN_L, 0xff, 0);
  79         pio->set_context_port_a(lcd, SIG_LCD_CHIPSEL_L, 0xff, 0);
  80         pio->set_context_port_b(keyboard, SIG_KEYBOARD_COLUMN_H, 1, 0);
  81         pio->set_context_port_b(lcd, SIG_LCD_CHIPSEL_H, 3, 0);
  82         pio->set_context_port_b(pcm, SIG_PCM1BIT_MUTE, 0x20, 0);
  83         pio->set_context_timer(pcm, SIG_PCM1BIT_SIGNAL, 1);
  84         pio->set_constant_clock(CPU_CLOCKS);
  85         rtc->set_context_dout(pio, SIG_I8155_PORT_C, 1);
  86         rtc->set_context_tp(cpu, SIG_I8085_RST7, 1);
  87
  88         memory->set_context_cmt(cmt);
  89         memory->set_context_drec(drec);
  90         memory->set_context_rtc(rtc);
  91
  92         // cpu bus
  93         cpu->set_context_mem(memory);
  94         cpu->set_context_io(io);
  95         cpu->set_context_intr(io);
  96 #ifdef USE_DEBUGGER
  97         cpu->set_context_debugger(new DEBUGGER(this, emu));
  98 #endif
  99
 100         // i/o bus
 101         io->set_iomap_range_w(0x90, 0x9f, memory);
 102         io->set_iomap_range_rw(0xa0, 0xaf, memory);
 103         io->set_iomap_range_rw(0xb0, 0xbf, pio);
 104         io->set_iomap_range_r(0xe0, 0xef, keyboard);
 105         io->set_iomap_range_rw(0xf0, 0xff, lcd);
 106
 107         // initialize all devices
 108 #if defined(__GIT_REPO_VERSION)
 109         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 110 #endif
 111         for(DEVICE* device = first_device; device; device = device->next_device) {
 112                 device->initialize();
 113         }
 114         rtc->write_signal(SIG_UPD1990A_STB, 0, 0);
 115 }
 116
 117 VM::~VM()
 118 {
 119         // delete all devices
 120         for(DEVICE* device = first_device; device;) {
 121                 DEVICE *next_device = device->next_device;
 122                 device->release();
 123                 delete device;
 124                 device = next_device;
 125         }
 126 }
 127
 128 DEVICE* VM::get_device(int id)
 129 {
 130         for(DEVICE* device = first_device; device; device = device->next_device) {
 131                 if(device->this_device_id == id) {
 132                         return device;
 133                 }
 134         }
 135         return NULL;
 136 }
 137
 138 // ----------------------------------------------------------------------------
 139 // drive virtual machine
 140 // ----------------------------------------------------------------------------
 141
 142 void VM::reset()
 143 {
 144         // reset all devices
 145         for(DEVICE* device = first_device; device; device = device->next_device) {
 146                 device->reset();
 147         }
 148 }
 149
 150 void VM::run()
 151 {
 152         event->drive();
 153 }
 154
 155 // ----------------------------------------------------------------------------
 156 // debugger
 157 // ----------------------------------------------------------------------------
 158
 159 #ifdef USE_DEBUGGER
 160 DEVICE *VM::get_cpu(int index)
 161 {
 162         if(index == 0) {
 163                 return cpu;
 164         }
 165         return NULL;
 166 }
 167 #endif
 168
 169 // ----------------------------------------------------------------------------
 170 // draw screen
 171 // ----------------------------------------------------------------------------
 172
 173 void VM::draw_screen()
 174 {
 175         lcd->draw_screen();
 176 }
 177
 178 // ----------------------------------------------------------------------------
 179 // soud manager
 180 // ----------------------------------------------------------------------------
 181
 182 void VM::initialize_sound(int rate, int samples)
 183 {
 184         // init sound manager
 185         event->initialize_sound(rate, samples);
 186
 187         // init sound gen
 188         pcm->initialize_sound(rate, 8000);
 189 }
 190
 191 uint16_t* VM::create_sound(int* extra_frames)
 192 {
 193         return event->create_sound(extra_frames);
 194 }
 195
 196 int VM::get_sound_buffer_ptr()
 197 {
 198         return event->get_sound_buffer_ptr();
 199 }
 200
 201 #ifdef USE_SOUND_VOLUME
 202 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 203 {
 204         if(ch == 0) {
 205                 pcm->set_volume(0, decibel_l, decibel_r);
 206         } else if(ch == 1) {
 207                 drec->set_volume(0, decibel_l, decibel_r);
 208         } else if(ch == 2) {
 209                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 210                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 211                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 212         }
 213 }
 214 #endif
 215
 216 // ----------------------------------------------------------------------------
 217 // notify key
 218 // ----------------------------------------------------------------------------
 219
 220 void VM::key_down(int code, bool repeat)
 221 {
 222         keyboard->key_down(code);
 223 }
 224
 225 void VM::key_up(int code)
 226 {
 227 }
 228
 229 bool VM::get_caps_locked()
 230 {
 231         return keyboard->get_caps_locked();
 232 }
 233
 234 bool VM::get_kana_locked()
 235 {
 236         return keyboard->get_kana_locked();
 237 }
 238
 239 // ----------------------------------------------------------------------------
 240 // user interface
 241 // ----------------------------------------------------------------------------
 242
 243 void VM::play_tape(int drv, const _TCHAR* file_path)
 244 {
 245         cmt->close_tape();
 246         drec->play_tape(file_path);
 247 //      drec->set_remote(true);
 248 }
 249
 250 void VM::rec_tape(int drv, const _TCHAR* file_path)
 251 {
 252         emu->lock_vm();
 253         drec->close_tape();
 254         emu->unlock_vm();
 255 //      drec->set_remote(false);
 256         cmt->rec_tape(file_path);
 257 }
 258
 259 void VM::close_tape(int drv)
 260 {
 261         emu->lock_vm();
 262         drec->close_tape();
 263         emu->unlock_vm();
 264 //      drec->set_remote(false);
 265         cmt->close_tape();
 266 }
 267
 268 bool VM::is_tape_inserted(int drv)
 269 {
 270         return drec->is_tape_inserted() || cmt->is_tape_inserted();
 271 }
 272
 273 bool VM::is_tape_playing(int drv)
 274 {
 275         if(drec->is_tape_inserted()) {
 276                 return drec->is_tape_playing();
 277         } else {
 278                 return cmt->is_tape_playing();
 279         }
 280 }
 281
 282 bool VM::is_tape_recording(int drv)
 283 {
 284         if(drec->is_tape_inserted()) {
 285                 return drec->is_tape_recording();
 286         } else {
 287                 return cmt->is_tape_recording();
 288         }
 289 }
 290
 291 int VM::get_tape_position(int drv)
 292 {
 293         if(drec->is_tape_inserted()) {
 294                 return drec->get_tape_position();
 295         } else {
 296                 return cmt->get_tape_position();
 297         }
 298 }
 299
 300 const _TCHAR* VM::get_tape_message(int drv)
 301 {
 302         if(drec->is_tape_inserted()) {
 303                 return drec->get_message();
 304         } else {
 305                 return NULL;
 306         }
 307 }
 308
 309 void VM::push_play(int drv)
 310 {
 311         if(drec->is_tape_inserted()) {
 312                 drec->set_ff_rew(0);
 313                 drec->set_remote(true);
 314         }
 315 }
 316
 317 void VM::push_stop(int drv)
 318 {
 319         if(drec->is_tape_inserted()) {
 320                 drec->set_remote(false);
 321         }
 322 }
 323
 324 void VM::push_fast_forward(int drv)
 325 {
 326         if(drec->is_tape_inserted()) {
 327                 drec->set_ff_rew(1);
 328                 drec->set_remote(true);
 329         }
 330 }
 331
 332 void VM::push_fast_rewind(int drv)
 333 {
 334         if(drec->is_tape_inserted()) {
 335                 drec->set_ff_rew(-1);
 336                 drec->set_remote(true);
 337         }
 338 }
 339
 340 bool VM::is_frame_skippable()
 341 {
 342         return event->is_frame_skippable();
 343 }
 344
 345 void VM::update_config()
 346 {
 347         for(DEVICE* device = first_device; device; device = device->next_device) {
 348                 device->update_config();
 349         }
 350 }
 351
 352 #define STATE_VERSION   3
 353
 354 bool VM::process_state(FILEIO* state_fio, bool loading)
 355 {
 356         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 357                 return false;
 358         }
 359         for(DEVICE* device = first_device; device; device = device->next_device) {
 360                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 361                 // const char *name = typeid(*device).name();
 362                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 363                 const char *name = device->get_device_name();
 364                 int len = strlen(name);
 365
 366                 if(!state_fio->StateCheckInt32(len)) {
 367                         if(loading) {
 368                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 369                         }
 370                         return false;
 371                 }
 372                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 373                         if(loading) {
 374                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 375                         }
 376                         return false;
 377                 }
 378                 if(!device->process_state(state_fio, loading)) {
 379                         if(loading) {
 380                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 381                         }
 382                         return false;
 383                 }
 384         }
 385         // Machine specified.
 386         return true;
 387 }