source/src/vm/pc2001/pc2001.cpp

   1 /*
   2         NEC PC-2001 Emulator 'ePC-2001'
   3
   4         Origin : PockEmul
   5         Author : Takeda.Toshiya
   6         Date   : 2016.03.18-
   7
   8         [ virtual machine ]
   9 */
  10
  11 #include "pc2001.h"
  12 #include "../../emu.h"
  13 #include "../device.h"
  14 #include "../event.h"
  15
  16 #include "../datarec.h"
  17 #include "../memory.h"
  18 #include "../noise.h"
  19 #include "../pcm1bit.h"
  20 #include "../upd16434.h"
  21 #include "../upd1990a.h"
  22 #include "../upd7810.h"
  23
  24 #ifdef USE_DEBUGGER
  25 #include "../debugger.h"
  26 #endif
  27
  28 #include "./io.h"
  29
  30 // ----------------------------------------------------------------------------
  31 // initialize
  32 // ----------------------------------------------------------------------------
  33
  34 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  35 {
  36         // create devices
  37         first_device = last_device = NULL;
  38         dummy = new DEVICE(this, emu);  // must be 1st device
  39         event = new EVENT(this, emu);   // must be 2nd device
  40
  41         drec = new DATAREC(this, emu);
  42         drec->set_context_noise_play(new NOISE(this, emu));
  43         drec->set_context_noise_stop(new NOISE(this, emu));
  44         drec->set_context_noise_fast(new NOISE(this, emu));
  45         memory = new MEMORY(this, emu);
  46         pcm = new PCM1BIT(this, emu);
  47         lcd[0] = new UPD16434(this, emu);
  48         lcd[0]->set_device_name(_T("uPD16434 LCD Controller #0"));
  49         lcd[1] = new UPD16434(this, emu);
  50         lcd[1]->set_device_name(_T("uPD16434 LCD Controller #1"));
  51         lcd[2] = new UPD16434(this, emu);
  52         lcd[2]->set_device_name(_T("uPD16434 LCD Controller #2"));
  53         lcd[3] = new UPD16434(this, emu);
  54         lcd[3]->set_device_name(_T("uPD16434 LCD Controller #3"));
  55         rtc = new UPD1990A(this, emu);
  56         cpu = new UPD7810(this, emu);
  57
  58         io = new PC2001_IO(this, emu);
  59
  60         // set contexts
  61         event->set_context_cpu(cpu);
  62         event->set_context_sound(pcm);
  63         event->set_context_sound(drec);
  64         event->set_context_sound(drec->get_context_noise_play());
  65         event->set_context_sound(drec->get_context_noise_stop());
  66         event->set_context_sound(drec->get_context_noise_fast());
  67
  68         drec->set_context_ear(io, SIG_IO_DREC_IN, 1);
  69         rtc->set_context_dout(io, SIG_IO_RTC_IN, 1);
  70         cpu->set_context_to(pcm, SIG_PCM1BIT_SIGNAL, 1);
  71
  72         io->set_context_lcd(0, lcd[0]);
  73         io->set_context_lcd(1, lcd[1]);
  74         io->set_context_lcd(2, lcd[2]);
  75         io->set_context_lcd(3, lcd[3]);
  76         io->set_context_drec(drec);
  77         io->set_context_rtc(rtc);
  78         io->set_context_cpu(cpu);
  79
  80         // memory bus
  81         memset(ram, 0xff, sizeof(ram));
  82 //      memset(ram, 0, sizeof(ram));
  83         memset(rom1, 0xff, sizeof(rom1));
  84         memset(rom2, 0xff, sizeof(rom2));
  85
  86         memory->read_bios(_T("0000-0FFF.ROM"), rom1, sizeof(rom1));
  87         memory->read_bios(_T("2000-5FFF.ROM"), rom2, sizeof(rom2));
  88
  89         memory->set_memory_r(0x0000, 0x0fff, rom1);
  90         memory->set_memory_r(0x2000, 0x5fff, rom2);
  91         memory->set_memory_rw(0xb000, 0xffff, ram);
  92
  93         // cpu bus
  94         cpu->set_context_mem(memory);
  95         cpu->set_context_io(io);
  96 #ifdef USE_DEBUGGER
  97         cpu->set_context_debugger(new DEBUGGER(this, emu));
  98 #endif
  99
 100         // initialize all devices
 101 #if defined(__GIT_REPO_VERSION)
 102         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 103 #endif
 104         for(DEVICE* device = first_device; device; device = device->next_device) {
 105                 device->initialize();
 106         }
 107 }
 108
 109 VM::~VM()
 110 {
 111         // delete all devices
 112         for(DEVICE* device = first_device; device;) {
 113                 DEVICE *next_device = device->next_device;
 114                 device->release();
 115                 delete device;
 116                 device = next_device;
 117         }
 118 }
 119
 120 DEVICE* VM::get_device(int id)
 121 {
 122         for(DEVICE* device = first_device; device; device = device->next_device) {
 123                 if(device->this_device_id == id) {
 124                         return device;
 125                 }
 126         }
 127         return NULL;
 128 }
 129
 130 // ----------------------------------------------------------------------------
 131 // drive virtual machine
 132 // ----------------------------------------------------------------------------
 133
 134 void VM::reset()
 135 {
 136         // reset all devices
 137         for(DEVICE* device = first_device; device; device = device->next_device) {
 138                 device->reset();
 139         }
 140 }
 141
 142 void VM::run()
 143 {
 144         event->drive();
 145 }
 146
 147 // ----------------------------------------------------------------------------
 148 // debugger
 149 // ----------------------------------------------------------------------------
 150
 151 #ifdef USE_DEBUGGER
 152 DEVICE *VM::get_cpu(int index)
 153 {
 154         if(index == 0) {
 155                 return cpu;
 156         }
 157         return NULL;
 158 }
 159 #endif
 160
 161 // ----------------------------------------------------------------------------
 162 // draw screen
 163 // ----------------------------------------------------------------------------
 164
 165 void VM::draw_screen()
 166 {
 167         for(int i = 0; i < 4; i++) {
 168                 lcd[i]->draw(60 * i);
 169         }
 170 }
 171
 172 // ----------------------------------------------------------------------------
 173 // soud manager
 174 // ----------------------------------------------------------------------------
 175
 176 void VM::initialize_sound(int rate, int samples)
 177 {
 178         // init sound manager
 179         event->initialize_sound(rate, samples);
 180
 181         // init sound gen
 182         pcm->initialize_sound(rate, 8000);
 183 }
 184
 185 uint16_t* VM::create_sound(int* extra_frames)
 186 {
 187         return event->create_sound(extra_frames);
 188 }
 189
 190 int VM::get_sound_buffer_ptr()
 191 {
 192         return event->get_sound_buffer_ptr();
 193 }
 194
 195 #ifdef USE_SOUND_VOLUME
 196 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 197 {
 198         if(ch == 0) {
 199                 pcm->set_volume(0, decibel_l, decibel_r);
 200         } else if(ch == 1) {
 201                 drec->set_volume(0, decibel_l, decibel_r);
 202         } else if(ch == 2) {
 203                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 204                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 205                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 206         }
 207 }
 208 #endif
 209
 210 // ----------------------------------------------------------------------------
 211 // user interface
 212 // ----------------------------------------------------------------------------
 213
 214 void VM::play_tape(int drv, const _TCHAR* file_path)
 215 {
 216         drec->play_tape(file_path);
 217 //      drec->set_remote(true);
 218 }
 219
 220 void VM::rec_tape(int drv, const _TCHAR* file_path)
 221 {
 222         drec->rec_tape(file_path);
 223 //      drec->set_remote(true);
 224 }
 225
 226 void VM::close_tape(int drv)
 227 {
 228         emu->lock_vm();
 229         drec->close_tape();
 230         emu->unlock_vm();
 231 //      drec->set_remote(false);
 232 }
 233
 234 bool VM::is_tape_inserted(int drv)
 235 {
 236         return drec->is_tape_inserted();
 237 }
 238
 239 bool VM::is_tape_playing(int drv)
 240 {
 241         return drec->is_tape_playing();
 242 }
 243
 244 bool VM::is_tape_recording(int drv)
 245 {
 246         return drec->is_tape_recording();
 247 }
 248
 249 int VM::get_tape_position(int drv)
 250 {
 251         return drec->get_tape_position();
 252 }
 253
 254 const _TCHAR* VM::get_tape_message(int drv)
 255 {
 256         return drec->get_message();
 257 }
 258
 259 void VM::push_play(int drv)
 260 {
 261         drec->set_ff_rew(0);
 262         drec->set_remote(true);
 263 }
 264
 265 void VM::push_stop(int drv)
 266 {
 267         drec->set_remote(false);
 268 }
 269
 270 void VM::push_fast_forward(int drv)
 271 {
 272         drec->set_ff_rew(1);
 273         drec->set_remote(true);
 274 }
 275
 276 void VM::push_fast_rewind(int drv)
 277 {
 278         drec->set_ff_rew(-1);
 279         drec->set_remote(true);
 280 }
 281
 282 bool VM::is_frame_skippable()
 283 {
 284         return event->is_frame_skippable();
 285 }
 286
 287 void VM::update_config()
 288 {
 289         for(DEVICE* device = first_device; device; device = device->next_device) {
 290                 device->update_config();
 291         }
 292 }
 293
 294 #define STATE_VERSION   3
 295
 296 bool VM::process_state(FILEIO* state_fio, bool loading)
 297 {
 298         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 299                 return false;
 300         }
 301         for(DEVICE* device = first_device; device; device = device->next_device) {
 302                 const char *name = typeid(*device).name() + 6; // skip "class "
 303                 int len = strlen(name);
 304
 305                 if(!state_fio->StateCheckInt32(len)) {
 306                         return false;
 307                 }
 308                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 309                         return false;
 310                 }
 311                 if(!device->process_state(state_fio, loading)) {
 312                         return false;
 313                 }
 314         }
 315         state_fio->StateBuffer(ram, sizeof(ram), 1);
 316         return true;
 317 }