source/src/vm/hc40/hc40.cpp

   1 /*
   2         EPSON HC-40 Emulator 'eHC-40'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.02.23 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "hc40.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../beep.h"
  16 #include "../datarec.h"
  17 #include "../noise.h"
  18 #include "../ptf20.h"
  19 #include "../z80.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "io.h"
  26 #include "memory.h"
  27
  28 // ----------------------------------------------------------------------------
  29 // initialize
  30 // ----------------------------------------------------------------------------
  31
  32 VM::VM(EMU* parent_emu) : emu(parent_emu)
  33 {
  34         // create devices
  35         first_device = last_device = NULL;
  36         dummy = new DEVICE(this, emu);  // must be 1st device
  37         event = new EVENT(this, emu);   // must be 2nd device
  38         dummy->set_device_name(_T("1st Dummy"));
  39
  40         beep = new BEEP(this, emu);
  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         tf20 = new PTF20(this, emu);
  46         cpu = new Z80(this, emu);
  47
  48         io = new IO(this, emu);
  49         memory = new MEMORY(this, emu);
  50         // set contexts
  51         event->set_context_cpu(cpu);
  52         event->set_context_sound(beep);
  53         event->set_context_sound(drec);
  54         event->set_context_sound(drec->get_context_noise_play());
  55         event->set_context_sound(drec->get_context_noise_stop());
  56         event->set_context_sound(drec->get_context_noise_fast());
  57
  58         drec->set_context_ear(io, SIG_IO_DREC, 1);
  59         tf20->set_context_sio(io, SIG_IO_ART);
  60
  61         io->set_context_cpu(cpu);
  62         io->set_context_mem(memory, memory->get_ram());
  63         io->set_context_tf20(tf20);
  64         io->set_context_beep(beep);
  65         io->set_context_drec(drec);
  66
  67         // cpu bus
  68         cpu->set_context_mem(memory);
  69         cpu->set_context_io(io);
  70         cpu->set_context_intr(io);
  71 #ifdef USE_DEBUGGER
  72         cpu->set_context_debugger(new DEBUGGER(this, emu));
  73 #endif
  74
  75         // initialize all devices
  76         for(DEVICE* device = first_device; device; device = device->next_device) {
  77                 device->initialize();
  78         }
  79 }
  80
  81 VM::~VM()
  82 {
  83         // delete all devices
  84         for(DEVICE* device = first_device; device;) {
  85                 DEVICE *next_device = device->next_device;
  86                 device->release();
  87                 delete device;
  88                 device = next_device;
  89         }
  90 }
  91
  92 DEVICE* VM::get_device(int id)
  93 {
  94         for(DEVICE* device = first_device; device; device = device->next_device) {
  95                 if(device->this_device_id == id) {
  96                         return device;
  97                 }
  98         }
  99         return NULL;
 100 }
 101
 102 // ----------------------------------------------------------------------------
 103 // drive virtual machine
 104 // ----------------------------------------------------------------------------
 105
 106 void VM::reset()
 107 {
 108         // reset all devices
 109         for(DEVICE* device = first_device; device; device = device->next_device) {
 110                 device->reset();
 111         }
 112 }
 113
 114 void VM::special_reset()
 115 {
 116         // system reset
 117         for(DEVICE* device = first_device; device; device = device->next_device) {
 118                 device->reset();
 119         }
 120         io->sysreset();
 121 }
 122
 123 void VM::run()
 124 {
 125         event->drive();
 126 }
 127
 128 // ----------------------------------------------------------------------------
 129 // debugger
 130 // ----------------------------------------------------------------------------
 131
 132 #ifdef USE_DEBUGGER
 133 DEVICE *VM::get_cpu(int index)
 134 {
 135         if(index == 0) {
 136                 return cpu;
 137         }
 138         return NULL;
 139 }
 140 #endif
 141
 142 // ----------------------------------------------------------------------------
 143 // draw screen
 144 // ----------------------------------------------------------------------------
 145
 146 void VM::draw_screen()
 147 {
 148         io->draw_screen();
 149 }
 150
 151 // ----------------------------------------------------------------------------
 152 // soud manager
 153 // ----------------------------------------------------------------------------
 154
 155 void VM::initialize_sound(int rate, int samples)
 156 {
 157         // init sound manager
 158         event->initialize_sound(rate, samples);
 159
 160         // init sound gen
 161         beep->initialize_sound(rate, 1000, 8000);
 162 }
 163
 164 uint16_t* VM::create_sound(int* extra_frames)
 165 {
 166         return event->create_sound(extra_frames);
 167 }
 168
 169 int VM::get_sound_buffer_ptr()
 170 {
 171         return event->get_sound_buffer_ptr();
 172 }
 173
 174 #ifdef USE_SOUND_VOLUME
 175 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 176 {
 177         if(ch == 0) {
 178                 beep->set_volume(0, decibel_l, decibel_r);
 179         } else if(ch == 1) {
 180                 drec->set_volume(0, decibel_l, decibel_r);
 181         } else if(ch == 2) {
 182                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 183                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 184                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 185         }
 186 }
 187 #endif
 188
 189 // ----------------------------------------------------------------------------
 190 // notify key
 191 // ----------------------------------------------------------------------------
 192
 193 void VM::key_down(int code, bool repeat)
 194 {
 195         io->key_down(code);
 196 }
 197
 198 void VM::key_up(int code)
 199 {
 200         io->key_up(code);
 201 }
 202
 203 // ----------------------------------------------------------------------------
 204 // user interface
 205 // ----------------------------------------------------------------------------
 206
 207 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 208 {
 209         tf20->open_disk(drv, file_path, bank);
 210 }
 211
 212 void VM::close_floppy_disk(int drv)
 213 {
 214         tf20->close_disk(drv);
 215 }
 216
 217 bool VM::is_floppy_disk_inserted(int drv)
 218 {
 219         return tf20->is_disk_inserted(drv);
 220 }
 221
 222 void VM::is_floppy_disk_protected(int drv, bool value)
 223 {
 224         tf20->is_disk_protected(drv, value);
 225 }
 226
 227 bool VM::is_floppy_disk_protected(int drv)
 228 {
 229         return tf20->is_disk_protected(drv);
 230 }
 231
 232 uint32_t VM::is_floppy_disk_accessed()
 233 {
 234         return tf20->read_signal(0);
 235 }
 236
 237 void VM::play_tape(int drv, const _TCHAR* file_path)
 238 {
 239         drec->play_tape(file_path);
 240 }
 241
 242 void VM::rec_tape(int drv, const _TCHAR* file_path)
 243 {
 244         drec->rec_tape(file_path);
 245 }
 246
 247 void VM::close_tape(int drv)
 248 {
 249         emu->lock_vm();
 250         drec->close_tape();
 251         emu->unlock_vm();
 252 }
 253
 254 bool VM::is_tape_inserted(int drv)
 255 {
 256         return drec->is_tape_inserted();
 257 }
 258
 259 bool VM::is_tape_playing(int drv)
 260 {
 261         return drec->is_tape_playing();
 262 }
 263
 264 bool VM::is_tape_recording(int drv)
 265 {
 266         return drec->is_tape_recording();
 267 }
 268
 269 int VM::get_tape_position(int drv)
 270 {
 271         return drec->get_tape_position();
 272 }
 273
 274 const _TCHAR* VM::get_tape_message(int drv)
 275 {
 276         return drec->get_message();
 277 }
 278
 279 bool VM::is_frame_skippable()
 280 {
 281         return event->is_frame_skippable();
 282 }
 283
 284 void VM::update_config()
 285 {
 286         for(DEVICE* device = first_device; device; device = device->next_device) {
 287                 device->update_config();
 288         }
 289 }
 290
 291 #define STATE_VERSION   2
 292
 293 void VM::save_state(FILEIO* state_fio)
 294 {
 295         state_fio->FputUint32(STATE_VERSION);
 296
 297         for(DEVICE* device = first_device; device; device = device->next_device) {
 298                 device->save_state(state_fio);
 299         }
 300 }
 301
 302 bool VM::load_state(FILEIO* state_fio)
 303 {
 304         if(state_fio->FgetUint32() != STATE_VERSION) {
 305                 return false;
 306         }
 307         for(DEVICE* device = first_device; device; device = device->next_device) {
 308                 if(!device->load_state(state_fio)) {
 309                         return false;
 310                 }
 311         }
 312         return true;
 313 }
 314