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_TEMPLATE* 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         io->space = 0x100;
  56         pcm = new PCM1BIT(this, emu);
  57         rtc = new UPD1990A(this, emu);
  58 #ifdef USE_DEBUGGER
  59 //      pcm->set_context_debugger(new DEBUGGER(this, emu));
  60 #endif
  61
  62         cmt = new CMT(this, emu);
  63         keyboard = new KEYBOARD(this, emu);
  64         lcd = new LCD(this, emu);
  65         memory = new MEMORY(this, emu);
  66
  67         // set contexts
  68         event->set_context_cpu(cpu);
  69         event->set_context_sound(pcm);
  70         event->set_context_sound(drec);
  71         event->set_context_sound(drec->get_context_noise_play());
  72         event->set_context_sound(drec->get_context_noise_stop());
  73         event->set_context_sound(drec->get_context_noise_fast());
  74
  75         drec->set_context_ear(cpu, SIG_I8085_SID, 1);
  76         cpu->set_context_sod(cmt, SIG_CMT_SOD, 1);
  77         pio->set_context_port_a(rtc, SIG_UPD1990A_C0, 1, 0);
  78         pio->set_context_port_a(rtc, SIG_UPD1990A_C1, 2, 0);
  79         pio->set_context_port_a(rtc, SIG_UPD1990A_C2, 4, 0);
  80         pio->set_context_port_a(rtc, SIG_UPD1990A_CLK, 8, 0);
  81         pio->set_context_port_a(rtc, SIG_UPD1990A_DIN, 0x10, 0);
  82         pio->set_context_port_a(keyboard, SIG_KEYBOARD_COLUMN_L, 0xff, 0);
  83         pio->set_context_port_a(lcd, SIG_LCD_CHIPSEL_L, 0xff, 0);
  84         pio->set_context_port_b(keyboard, SIG_KEYBOARD_COLUMN_H, 1, 0);
  85         pio->set_context_port_b(lcd, SIG_LCD_CHIPSEL_H, 3, 0);
  86         pio->set_context_port_b(pcm, SIG_PCM1BIT_MUTE, 0x20, 0);
  87         pio->set_context_timer(pcm, SIG_PCM1BIT_SIGNAL, 1);
  88         pio->set_constant_clock(CPU_CLOCKS);
  89         rtc->set_context_dout(pio, SIG_I8155_PORT_C, 1);
  90         rtc->set_context_tp(cpu, SIG_I8085_RST7, 1);
  91
  92         memory->set_context_cmt(cmt);
  93         memory->set_context_drec(drec);
  94         memory->set_context_rtc(rtc);
  95
  96         // cpu bus
  97         cpu->set_context_mem(memory);
  98         cpu->set_context_io(io);
  99         cpu->set_context_intr(io);
 100 #ifdef USE_DEBUGGER
 101         cpu->set_context_debugger(new DEBUGGER(this, emu));
 102 #endif
 103
 104         // i/o bus
 105         io->set_iomap_range_w(0x90, 0x9f, memory);
 106         io->set_iomap_range_rw(0xa0, 0xaf, memory);
 107         io->set_iomap_range_rw(0xb0, 0xbf, pio);
 108         io->set_iomap_range_r(0xe0, 0xef, keyboard);
 109         io->set_iomap_range_rw(0xf0, 0xff, lcd);
 110
 111         // initialize all devices
 112 #if defined(__GIT_REPO_VERSION)
 113         set_git_repo_version(__GIT_REPO_VERSION);
 114 #endif
 115         initialize_devices();
 116
 117         rtc->write_signal(SIG_UPD1990A_STB, 0, 0);
 118 }
 119
 120 VM::~VM()
 121 {
 122         // delete all devices
 123         for(DEVICE* device = first_device; device;) {
 124                 DEVICE *next_device = device->next_device;
 125                 device->release();
 126                 delete device;
 127                 device = next_device;
 128         }
 129 }
 130
 131 DEVICE* VM::get_device(int id)
 132 {
 133         for(DEVICE* device = first_device; device; device = device->next_device) {
 134                 if(device->this_device_id == id) {
 135                         return device;
 136                 }
 137         }
 138         return NULL;
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // drive virtual machine
 143 // ----------------------------------------------------------------------------
 144
 145 void VM::reset()
 146 {
 147         // reset all devices
 148         for(DEVICE* device = first_device; device; device = device->next_device) {
 149                 device->reset();
 150         }
 151 }
 152
 153 void VM::run()
 154 {
 155         event->drive();
 156 }
 157
 158 // ----------------------------------------------------------------------------
 159 // debugger
 160 // ----------------------------------------------------------------------------
 161
 162 #ifdef USE_DEBUGGER
 163 DEVICE *VM::get_cpu(int index)
 164 {
 165         if(index == 0) {
 166                 return cpu;
 167         }
 168         return NULL;
 169 }
 170 #endif
 171
 172 // ----------------------------------------------------------------------------
 173 // draw screen
 174 // ----------------------------------------------------------------------------
 175
 176 void VM::draw_screen()
 177 {
 178         lcd->draw_screen();
 179 }
 180
 181 // ----------------------------------------------------------------------------
 182 // soud manager
 183 // ----------------------------------------------------------------------------
 184
 185 void VM::initialize_sound(int rate, int samples)
 186 {
 187         // init sound manager
 188         event->initialize_sound(rate, samples);
 189
 190         // init sound gen
 191         pcm->initialize_sound(rate, 8000);
 192 }
 193
 194 uint16_t* VM::create_sound(int* extra_frames)
 195 {
 196         return event->create_sound(extra_frames);
 197 }
 198
 199 int VM::get_sound_buffer_ptr()
 200 {
 201         return event->get_sound_buffer_ptr();
 202 }
 203
 204 #ifdef USE_SOUND_VOLUME
 205 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 206 {
 207         if(ch == 0) {
 208                 pcm->set_volume(0, decibel_l, decibel_r);
 209         } else if(ch == 1) {
 210                 drec->set_volume(0, decibel_l, decibel_r);
 211         } else if(ch == 2) {
 212                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 213                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 214                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 215         }
 216 }
 217 #endif
 218
 219 // ----------------------------------------------------------------------------
 220 // notify key
 221 // ----------------------------------------------------------------------------
 222
 223 void VM::key_down(int code, bool repeat)
 224 {
 225         keyboard->key_down(code);
 226 }
 227
 228 void VM::key_up(int code)
 229 {
 230 }
 231
 232 bool VM::get_caps_locked()
 233 {
 234         return keyboard->get_caps_locked();
 235 }
 236
 237 bool VM::get_kana_locked()
 238 {
 239         return keyboard->get_kana_locked();
 240 }
 241
 242 // ----------------------------------------------------------------------------
 243 // user interface
 244 // ----------------------------------------------------------------------------
 245
 246 void VM::play_tape(int drv, const _TCHAR* file_path)
 247 {
 248         cmt->close_tape();
 249
 250         bool remote = drec->get_remote();
 251
 252         if(drec->play_tape(file_path) && remote) {
 253                 // if machine already sets remote on, start playing now
 254                 push_play(drv);
 255         }
 256 }
 257
 258 void VM::rec_tape(int drv, const _TCHAR* file_path)
 259 {
 260         emu->lock_vm();
 261         drec->close_tape();
 262         emu->unlock_vm();
 263         drec->set_remote(false);
 264
 265         cmt->rec_tape(file_path);
 266 }
 267
 268 void VM::close_tape(int drv)
 269 {
 270         emu->lock_vm();
 271         drec->close_tape();
 272         emu->unlock_vm();
 273         drec->set_remote(false);
 274
 275         cmt->close_tape();
 276 }
 277
 278 bool VM::is_tape_inserted(int drv)
 279 {
 280         return drec->is_tape_inserted() || cmt->is_tape_inserted();
 281 }
 282
 283 bool VM::is_tape_playing(int drv)
 284 {
 285         if(drec->is_tape_inserted()) {
 286                 return drec->is_tape_playing();
 287         } else {
 288                 return cmt->is_tape_playing();
 289         }
 290 }
 291
 292 bool VM::is_tape_recording(int drv)
 293 {
 294         if(drec->is_tape_inserted()) {
 295                 return drec->is_tape_recording();
 296         } else {
 297                 return cmt->is_tape_recording();
 298         }
 299 }
 300
 301 int VM::get_tape_position(int drv)
 302 {
 303         if(drec->is_tape_inserted()) {
 304                 return drec->get_tape_position();
 305         } else {
 306                 return cmt->get_tape_position();
 307         }
 308 }
 309
 310 const _TCHAR* VM::get_tape_message(int drv)
 311 {
 312         if(drec->is_tape_inserted()) {
 313                 return drec->get_message();
 314         } else {
 315                 return NULL;
 316         }
 317 }
 318
 319 void VM::push_play(int drv)
 320 {
 321         if(drec->is_tape_inserted()) {
 322                 drec->set_remote(false);
 323                 drec->set_ff_rew(0);
 324                 drec->set_remote(true);
 325         }
 326 }
 327
 328 void VM::push_stop(int drv)
 329 {
 330         if(drec->is_tape_inserted()) {
 331                 drec->set_remote(false);
 332         }
 333 }
 334
 335 void VM::push_fast_forward(int drv)
 336 {
 337         if(drec->is_tape_inserted()) {
 338                 drec->set_remote(false);
 339                 drec->set_ff_rew(1);
 340                 drec->set_remote(true);
 341         }
 342 }
 343
 344 void VM::push_fast_rewind(int drv)
 345 {
 346         if(drec->is_tape_inserted()) {
 347                 drec->set_remote(false);
 348                 drec->set_ff_rew(-1);
 349                 drec->set_remote(true);
 350         }
 351 }
 352
 353 bool VM::is_frame_skippable()
 354 {
 355         return event->is_frame_skippable();
 356 }
 357
 358 void VM::update_config()
 359 {
 360         for(DEVICE* device = first_device; device; device = device->next_device) {
 361                 device->update_config();
 362         }
 363 }
 364
 365 double VM::get_current_usec()
 366 {
 367         if(event == NULL) return 0.0;
 368         return event->get_current_usec();
 369 }
 370
 371 uint64_t VM::get_current_clock_uint64()
 372 {
 373                 if(event == NULL) return (uint64_t)0;
 374                 return event->get_current_clock_uint64();
 375 }
 376
 377 #define STATE_VERSION   3
 378
 379 bool VM::process_state(FILEIO* state_fio, bool loading)
 380 {
 381         if(!(VM_TEMPLATE::process_state_core(state_fio, loading, STATE_VERSION))) {
 382                 return false;
 383         }
 384         // Machine specified.
 385         return true;
 386 }