source/src/vm/bmjr/bmjr.cpp

   1 /*
   2         HITACH BASIC Master Jr Emulator 'eBASICMasterJr'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2015.08.28-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "bmjr.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../mc6800.h"
  17 #include "../mc6820.h"
  18 #include "../noise.h"
  19
  20 #ifdef USE_DEBUGGER
  21 #include "../debugger.h"
  22 #endif
  23
  24 #include "memory.h"
  25
  26 // ----------------------------------------------------------------------------
  27 // initialize
  28 // ----------------------------------------------------------------------------
  29
  30 VM::VM(EMU* parent_emu) : emu(parent_emu)
  31 {
  32         // create devices
  33         first_device = last_device = NULL;
  34         dummy = new DEVICE(this, emu);  // must be 1st device
  35         event = new EVENT(this, emu);   // must be 2nd device
  36
  37         drec = new DATAREC(this, emu);
  38         drec->set_context_noise_play(new NOISE(this, emu));
  39         drec->set_context_noise_stop(new NOISE(this, emu));
  40         drec->set_context_noise_fast(new NOISE(this, emu));
  41         cpu = new MC6800(this, emu);
  42         pia = new MC6820(this, emu);
  43
  44         memory = new MEMORY(this, emu);
  45
  46         // Set names
  47 #if defined(_USE_QT)
  48         dummy->set_device_name(_T("1st Dummy"));
  49 #endif
  50         // set contexts
  51         event->set_context_cpu(cpu);
  52         event->set_context_sound(drec);
  53         event->set_context_sound(memory);
  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(memory, SIG_MEMORY_DATAREC_EAR, 1);
  59
  60         memory->set_context_drec(drec);
  61         memory->set_context_cpu(cpu);
  62         memory->set_context_pia(pia);
  63
  64         // cpu bus
  65         cpu->set_context_mem(memory);
  66 #ifdef USE_DEBUGGER
  67         cpu->set_context_debugger(new DEBUGGER(this, emu));
  68 #endif
  69
  70         // initialize all devices
  71         for(DEVICE* device = first_device; device; device = device->next_device) {
  72                 device->initialize();
  73         }
  74 }
  75
  76 VM::~VM()
  77 {
  78         // delete all devices
  79         for(DEVICE* device = first_device; device;) {
  80                 DEVICE *next_device = device->next_device;
  81                 device->release();
  82                 delete device;
  83                 device = next_device;
  84         }
  85 }
  86
  87 DEVICE* VM::get_device(int id)
  88 {
  89         for(DEVICE* device = first_device; device; device = device->next_device) {
  90                 if(device->this_device_id == id) {
  91                         return device;
  92                 }
  93         }
  94         return NULL;
  95 }
  96
  97 // ----------------------------------------------------------------------------
  98 // drive virtual machine
  99 // ----------------------------------------------------------------------------
 100
 101 void VM::reset()
 102 {
 103         // reset all devices
 104         for(DEVICE* device = first_device; device; device = device->next_device) {
 105                 device->reset();
 106         }
 107 }
 108
 109 void VM::special_reset()
 110 {
 111         // reset all devices
 112         for(DEVICE* device = first_device; device; device = device->next_device) {
 113                 device->reset();
 114         }
 115 }
 116
 117 void VM::run()
 118 {
 119         event->drive();
 120 }
 121
 122 double VM::get_frame_rate()
 123 {
 124         return event->get_frame_rate();
 125 }
 126
 127 // ----------------------------------------------------------------------------
 128 // debugger
 129 // ----------------------------------------------------------------------------
 130
 131 #ifdef USE_DEBUGGER
 132 DEVICE *VM::get_cpu(int index)
 133 {
 134         if(index == 0) {
 135                 return cpu;
 136         }
 137         return NULL;
 138 }
 139 #endif
 140
 141 // ----------------------------------------------------------------------------
 142 // draw screen
 143 // ----------------------------------------------------------------------------
 144
 145 void VM::draw_screen()
 146 {
 147         memory->draw_screen();
 148 }
 149
 150 // ----------------------------------------------------------------------------
 151 // soud manager
 152 // ----------------------------------------------------------------------------
 153
 154 void VM::initialize_sound(int rate, int samples)
 155 {
 156         // init sound manager
 157         event->initialize_sound(rate, samples);
 158 }
 159
 160 uint16_t* VM::create_sound(int* extra_frames)
 161 {
 162         return event->create_sound(extra_frames);
 163 }
 164
 165 int VM::get_sound_buffer_ptr()
 166 {
 167         return event->get_sound_buffer_ptr();
 168 }
 169
 170 #ifdef USE_SOUND_VOLUME
 171 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 172 {
 173         if(ch == 0) {
 174                 memory->set_volume(0, decibel_l, decibel_r);
 175         } else if(ch == 1) {
 176                 drec->set_volume(0, decibel_l, decibel_r);
 177         } else if(ch == 2) {
 178                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 179                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 180                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 181         }
 182 }
 183 #endif
 184
 185 // ----------------------------------------------------------------------------
 186 // notify key
 187 // ----------------------------------------------------------------------------
 188
 189 void VM::key_down(int code, bool repeat)
 190 {
 191         if(!repeat) {
 192                 memory->key_down(code);
 193         }
 194 }
 195
 196 void VM::key_up(int code)
 197 {
 198 }
 199
 200 // ----------------------------------------------------------------------------
 201 // user interface
 202 // ----------------------------------------------------------------------------
 203
 204 void VM::play_tape(int drv, const _TCHAR* file_path)
 205 {
 206         drec->play_tape(file_path);
 207 //      drec->set_remote(true);
 208 }
 209
 210 void VM::rec_tape(int drv, const _TCHAR* file_path)
 211 {
 212         drec->rec_tape(file_path);
 213 //      drec->set_remote(true);
 214 }
 215
 216 void VM::close_tape(int drv)
 217 {
 218         emu->lock_vm();
 219         drec->close_tape();
 220         emu->unlock_vm();
 221 //      drec->set_remote(false);
 222 }
 223
 224 bool VM::is_tape_inserted(int drv)
 225 {
 226         return drec->is_tape_inserted();
 227 }
 228
 229 bool VM::is_tape_playing(int drv)
 230 {
 231         return drec->is_tape_playing();
 232 }
 233
 234 bool VM::is_tape_recording(int drv)
 235 {
 236         return drec->is_tape_recording();
 237 }
 238
 239 int VM::get_tape_position(int drv)
 240 {
 241         return drec->get_tape_position();
 242 }
 243
 244 const _TCHAR* VM::get_tape_message(int drv)
 245 {
 246         return drec->get_message();
 247 }
 248
 249 void VM::push_play(int drv)
 250 {
 251         drec->set_ff_rew(0);
 252         drec->set_remote(true);
 253 }
 254
 255 void VM::push_stop(int drv)
 256 {
 257         drec->set_remote(false);
 258 }
 259
 260 void VM::push_fast_forward(int drv)
 261 {
 262         drec->set_ff_rew(1);
 263         drec->set_remote(true);
 264 }
 265
 266 void VM::push_fast_rewind(int drv)
 267 {
 268         drec->set_ff_rew(-1);
 269         drec->set_remote(true);
 270 }
 271
 272 bool VM::is_frame_skippable()
 273 {
 274         return event->is_frame_skippable();
 275 }
 276
 277 void VM::update_config()
 278 {
 279         for(DEVICE* device = first_device; device; device = device->next_device) {
 280                 device->update_config();
 281         }
 282 }
 283
 284 #define STATE_VERSION   3
 285
 286 void VM::save_state(FILEIO* state_fio)
 287 {
 288         state_fio->FputUint32(STATE_VERSION);
 289
 290         for(DEVICE* device = first_device; device; device = device->next_device) {
 291                 device->save_state(state_fio);
 292         }
 293 }
 294
 295 bool VM::load_state(FILEIO* state_fio)
 296 {
 297         if(state_fio->FgetUint32() != STATE_VERSION) {
 298                 return false;
 299         }
 300         for(DEVICE* device = first_device; device; device = device->next_device) {
 301                 if(!device->load_state(state_fio)) {
 302                         return false;
 303                 }
 304         }
 305         return true;
 306 }
 307