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 // ----------------------------------------------------------------------------
  33 // initialize
  34 // ----------------------------------------------------------------------------
  35
  36 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  37 {
  38         // create devices
  39         first_device = last_device = NULL;
  40         dummy = new DEVICE(this, emu);  // must be 1st device
  41         event = new EVENT(this, emu);   // must be 2nd device
  42
  43         drec = new DATAREC(this, emu);
  44         drec->set_context_noise_play(new NOISE(this, emu));
  45         drec->set_context_noise_stop(new NOISE(this, emu));
  46         drec->set_context_noise_fast(new NOISE(this, emu));
  47         cpu = new I8080(this, emu);
  48         pio = new I8155(this, emu);
  49         io = new IO(this, emu);
  50         pcm = new PCM1BIT(this, emu);
  51         rtc = new UPD1990A(this, emu);
  52
  53         cmt = new CMT(this, emu);
  54         keyboard = new KEYBOARD(this, emu);
  55         lcd = new LCD(this, emu);
  56         memory = new PC8201_MEMORY(this, emu);
  57
  58         // set contexts
  59         event->set_context_cpu(cpu);
  60         event->set_context_sound(pcm);
  61         event->set_context_sound(drec);
  62         event->set_context_sound(drec->get_context_noise_play());
  63         event->set_context_sound(drec->get_context_noise_stop());
  64         event->set_context_sound(drec->get_context_noise_fast());
  65
  66         drec->set_context_ear(cpu, SIG_I8085_SID, 1);
  67         cpu->set_context_sod(cmt, SIG_CMT_SOD, 1);
  68         pio->set_context_port_a(rtc, SIG_UPD1990A_C0, 1, 0);
  69         pio->set_context_port_a(rtc, SIG_UPD1990A_C1, 2, 0);
  70         pio->set_context_port_a(rtc, SIG_UPD1990A_C2, 4, 0);
  71         pio->set_context_port_a(rtc, SIG_UPD1990A_CLK, 8, 0);
  72         pio->set_context_port_a(rtc, SIG_UPD1990A_DIN, 0x10, 0);
  73         pio->set_context_port_a(keyboard, SIG_KEYBOARD_COLUMN_L, 0xff, 0);
  74         pio->set_context_port_a(lcd, SIG_LCD_CHIPSEL_L, 0xff, 0);
  75         pio->set_context_port_b(keyboard, SIG_KEYBOARD_COLUMN_H, 1, 0);
  76         pio->set_context_port_b(lcd, SIG_LCD_CHIPSEL_H, 3, 0);
  77         pio->set_context_port_b(pcm, SIG_PCM1BIT_MUTE, 0x20, 0);
  78         pio->set_context_timer(pcm, SIG_PCM1BIT_SIGNAL, 1);
  79         pio->set_constant_clock(CPU_CLOCKS);
  80         rtc->set_context_dout(pio, SIG_I8155_PORT_C, 1);
  81         rtc->set_context_tp(cpu, SIG_I8085_RST7, 1);
  82
  83         memory->set_context_cmt(cmt);
  84         memory->set_context_drec(drec);
  85         memory->set_context_rtc(rtc);
  86
  87         // cpu bus
  88         cpu->set_context_mem(memory);
  89         cpu->set_context_io(io);
  90         cpu->set_context_intr(io);
  91 #ifdef USE_DEBUGGER
  92         cpu->set_context_debugger(new DEBUGGER(this, emu));
  93 #endif
  94
  95         // i/o bus
  96         io->set_iomap_range_w(0x90, 0x9f, memory);
  97         io->set_iomap_range_rw(0xa0, 0xaf, memory);
  98         io->set_iomap_range_rw(0xb0, 0xbf, pio);
  99         io->set_iomap_range_r(0xe0, 0xef, keyboard);
 100         io->set_iomap_range_rw(0xf0, 0xff, lcd);
 101
 102         // initialize all devices
 103 #if defined(__GIT_REPO_VERSION)
 104         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 105 #endif
 106         for(DEVICE* device = first_device; device; device = device->next_device) {
 107                 device->initialize();
 108         }
 109         rtc->write_signal(SIG_UPD1990A_STB, 0, 0);
 110 }
 111
 112 VM::~VM()
 113 {
 114         // delete all devices
 115         for(DEVICE* device = first_device; device;) {
 116                 DEVICE *next_device = device->next_device;
 117                 device->release();
 118                 delete device;
 119                 device = next_device;
 120         }
 121 }
 122
 123 DEVICE* VM::get_device(int id)
 124 {
 125         for(DEVICE* device = first_device; device; device = device->next_device) {
 126                 if(device->this_device_id == id) {
 127                         return device;
 128                 }
 129         }
 130         return NULL;
 131 }
 132
 133 // ----------------------------------------------------------------------------
 134 // drive virtual machine
 135 // ----------------------------------------------------------------------------
 136
 137 void VM::reset()
 138 {
 139         // reset all devices
 140         for(DEVICE* device = first_device; device; device = device->next_device) {
 141                 device->reset();
 142         }
 143 }
 144
 145 void VM::run()
 146 {
 147         event->drive();
 148 }
 149
 150 // ----------------------------------------------------------------------------
 151 // debugger
 152 // ----------------------------------------------------------------------------
 153
 154 #ifdef USE_DEBUGGER
 155 DEVICE *VM::get_cpu(int index)
 156 {
 157         if(index == 0) {
 158                 return cpu;
 159         }
 160         return NULL;
 161 }
 162 #endif
 163
 164 // ----------------------------------------------------------------------------
 165 // draw screen
 166 // ----------------------------------------------------------------------------
 167
 168 void VM::draw_screen()
 169 {
 170         lcd->draw_screen();
 171 }
 172
 173 // ----------------------------------------------------------------------------
 174 // soud manager
 175 // ----------------------------------------------------------------------------
 176
 177 void VM::initialize_sound(int rate, int samples)
 178 {
 179         // init sound manager
 180         event->initialize_sound(rate, samples);
 181
 182         // init sound gen
 183         pcm->initialize_sound(rate, 8000);
 184 }
 185
 186 uint16_t* VM::create_sound(int* extra_frames)
 187 {
 188         return event->create_sound(extra_frames);
 189 }
 190
 191 int VM::get_sound_buffer_ptr()
 192 {
 193         return event->get_sound_buffer_ptr();
 194 }
 195
 196 #ifdef USE_SOUND_VOLUME
 197 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 198 {
 199         if(ch == 0) {
 200                 pcm->set_volume(0, decibel_l, decibel_r);
 201         } else if(ch == 1) {
 202                 drec->set_volume(0, decibel_l, decibel_r);
 203         } else if(ch == 2) {
 204                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 205                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 206                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 207         }
 208 }
 209 #endif
 210
 211 // ----------------------------------------------------------------------------
 212 // notify key
 213 // ----------------------------------------------------------------------------
 214
 215 void VM::key_down(int code, bool repeat)
 216 {
 217         keyboard->key_down(code);
 218 }
 219
 220 void VM::key_up(int code)
 221 {
 222 }
 223
 224 bool VM::get_caps_locked()
 225 {
 226         return keyboard->get_caps_locked();
 227 }
 228
 229 bool VM::get_kana_locked()
 230 {
 231         return keyboard->get_kana_locked();
 232 }
 233
 234 // ----------------------------------------------------------------------------
 235 // user interface
 236 // ----------------------------------------------------------------------------
 237
 238 void VM::play_tape(int drv, const _TCHAR* file_path)
 239 {
 240         cmt->close_tape();
 241         drec->play_tape(file_path);
 242 //      drec->set_remote(true);
 243 }
 244
 245 void VM::rec_tape(int drv, const _TCHAR* file_path)
 246 {
 247         emu->lock_vm();
 248         drec->close_tape();
 249         emu->unlock_vm();
 250 //      drec->set_remote(false);
 251         cmt->rec_tape(file_path);
 252 }
 253
 254 void VM::close_tape(int drv)
 255 {
 256         emu->lock_vm();
 257         drec->close_tape();
 258         emu->unlock_vm();
 259 //      drec->set_remote(false);
 260         cmt->close_tape();
 261 }
 262
 263 bool VM::is_tape_inserted(int drv)
 264 {
 265         return drec->is_tape_inserted() || cmt->is_tape_inserted();
 266 }
 267
 268 bool VM::is_tape_playing(int drv)
 269 {
 270         if(drec->is_tape_inserted()) {
 271                 return drec->is_tape_playing();
 272         } else {
 273                 return cmt->is_tape_playing();
 274         }
 275 }
 276
 277 bool VM::is_tape_recording(int drv)
 278 {
 279         if(drec->is_tape_inserted()) {
 280                 return drec->is_tape_recording();
 281         } else {
 282                 return cmt->is_tape_recording();
 283         }
 284 }
 285
 286 int VM::get_tape_position(int drv)
 287 {
 288         if(drec->is_tape_inserted()) {
 289                 return drec->get_tape_position();
 290         } else {
 291                 return cmt->get_tape_position();
 292         }
 293 }
 294
 295 const _TCHAR* VM::get_tape_message(int drv)
 296 {
 297         if(drec->is_tape_inserted()) {
 298                 return drec->get_message();
 299         } else {
 300                 return NULL;
 301         }
 302 }
 303
 304 void VM::push_play(int drv)
 305 {
 306         if(drec->is_tape_inserted()) {
 307                 drec->set_ff_rew(0);
 308                 drec->set_remote(true);
 309         }
 310 }
 311
 312 void VM::push_stop(int drv)
 313 {
 314         if(drec->is_tape_inserted()) {
 315                 drec->set_remote(false);
 316         }
 317 }
 318
 319 void VM::push_fast_forward(int drv)
 320 {
 321         if(drec->is_tape_inserted()) {
 322                 drec->set_ff_rew(1);
 323                 drec->set_remote(true);
 324         }
 325 }
 326
 327 void VM::push_fast_rewind(int drv)
 328 {
 329         if(drec->is_tape_inserted()) {
 330                 drec->set_ff_rew(-1);
 331                 drec->set_remote(true);
 332         }
 333 }
 334
 335 bool VM::is_frame_skippable()
 336 {
 337         return event->is_frame_skippable();
 338 }
 339
 340 void VM::update_config()
 341 {
 342         for(DEVICE* device = first_device; device; device = device->next_device) {
 343                 device->update_config();
 344         }
 345 }
 346
 347 #define STATE_VERSION   3
 348
 349 bool VM::process_state(FILEIO* state_fio, bool loading)
 350 {
 351         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 352                 return false;
 353         }
 354         for(DEVICE* device = first_device; device; device = device->next_device) {
 355                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 356                 // const char *name = typeid(*device).name();
 357                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 358                 const char *name = device->get_device_name();
 359                 int len = strlen(name);
 360
 361                 if(!state_fio->StateCheckInt32(len)) {
 362                         if(loading) {
 363                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 364                         }
 365                         return false;
 366                 }
 367                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 368                         if(loading) {
 369                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 370                         }
 371                         return false;
 372                 }
 373                 if(!device->process_state(state_fio, loading)) {
 374                         if(loading) {
 375                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 376                         }
 377                         return false;
 378                 }
 379         }
 380         // Machine specified.
 381         return true;
 382 }