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         event->set_device_name(_T("EVENT"));
  50         cpu->set_device_name(_T("CPU(MC6800)"));
  51         pia->set_device_name(_T("MC6820 PIA"));
  52         memory->set_device_name(_T("MEMORY"));
  53 #endif
  54         // set contexts
  55         event->set_context_cpu(cpu);
  56         event->set_context_sound(drec);
  57         event->set_context_sound(memory);
  58         event->set_context_sound(drec->get_context_noise_play());
  59         event->set_context_sound(drec->get_context_noise_stop());
  60         event->set_context_sound(drec->get_context_noise_fast());
  61
  62         drec->set_context_ear(memory, SIG_MEMORY_DATAREC_EAR, 1);
  63
  64         memory->set_context_drec(drec);
  65         memory->set_context_cpu(cpu);
  66         memory->set_context_pia(pia);
  67
  68         // cpu bus
  69         cpu->set_context_mem(memory);
  70 #ifdef USE_DEBUGGER
  71         cpu->set_context_debugger(new DEBUGGER(this, emu));
  72 #endif
  73
  74         // initialize all devices
  75         for(DEVICE* device = first_device; device; device = device->next_device) {
  76                 device->initialize();
  77         }
  78 }
  79
  80 VM::~VM()
  81 {
  82         // delete all devices
  83         for(DEVICE* device = first_device; device;) {
  84                 DEVICE *next_device = device->next_device;
  85                 device->release();
  86                 delete device;
  87                 device = next_device;
  88         }
  89 }
  90
  91 DEVICE* VM::get_device(int id)
  92 {
  93         for(DEVICE* device = first_device; device; device = device->next_device) {
  94                 if(device->this_device_id == id) {
  95                         return device;
  96                 }
  97         }
  98         return NULL;
  99 }
 100
 101 // ----------------------------------------------------------------------------
 102 // drive virtual machine
 103 // ----------------------------------------------------------------------------
 104
 105 void VM::reset()
 106 {
 107         // reset all devices
 108         for(DEVICE* device = first_device; device; device = device->next_device) {
 109                 device->reset();
 110         }
 111 }
 112
 113 void VM::special_reset()
 114 {
 115         // reset all devices
 116         for(DEVICE* device = first_device; device; device = device->next_device) {
 117                 device->reset();
 118         }
 119 }
 120
 121 void VM::run()
 122 {
 123         event->drive();
 124 }
 125
 126 double VM::get_frame_rate()
 127 {
 128         return event->get_frame_rate();
 129 }
 130
 131 // ----------------------------------------------------------------------------
 132 // debugger
 133 // ----------------------------------------------------------------------------
 134
 135 #ifdef USE_DEBUGGER
 136 DEVICE *VM::get_cpu(int index)
 137 {
 138         if(index == 0) {
 139                 return cpu;
 140         }
 141         return NULL;
 142 }
 143 #endif
 144
 145 // ----------------------------------------------------------------------------
 146 // draw screen
 147 // ----------------------------------------------------------------------------
 148
 149 void VM::draw_screen()
 150 {
 151         memory->draw_screen();
 152 }
 153
 154 // ----------------------------------------------------------------------------
 155 // soud manager
 156 // ----------------------------------------------------------------------------
 157
 158 void VM::initialize_sound(int rate, int samples)
 159 {
 160         // init sound manager
 161         event->initialize_sound(rate, samples);
 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                 memory->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 }
 188 #endif
 189
 190 // ----------------------------------------------------------------------------
 191 // notify key
 192 // ----------------------------------------------------------------------------
 193
 194 void VM::key_down(int code, bool repeat)
 195 {
 196         if(!repeat) {
 197                 memory->key_down(code);
 198         }
 199 }
 200
 201 void VM::key_up(int code)
 202 {
 203 }
 204
 205 // ----------------------------------------------------------------------------
 206 // user interface
 207 // ----------------------------------------------------------------------------
 208
 209 void VM::play_tape(int drv, const _TCHAR* file_path)
 210 {
 211         drec->play_tape(file_path);
 212         push_play(drv);
 213 }
 214
 215 void VM::rec_tape(int drv, const _TCHAR* file_path)
 216 {
 217         drec->rec_tape(file_path);
 218 //      push_play(drv);
 219 }
 220
 221 void VM::close_tape(int drv)
 222 {
 223         push_stop(drv);
 224         emu->lock_vm();
 225         drec->close_tape();
 226         emu->unlock_vm();
 227 }
 228
 229 bool VM::is_tape_inserted(int drv)
 230 {
 231         return drec->is_tape_inserted();
 232 }
 233
 234 bool VM::is_tape_playing(int drv)
 235 {
 236         return drec->is_tape_playing();
 237 }
 238
 239 bool VM::is_tape_recording(int drv)
 240 {
 241         return drec->is_tape_recording();
 242 }
 243
 244 int VM::get_tape_position(int drv)
 245 {
 246         return drec->get_tape_position();
 247 }
 248
 249 const _TCHAR* VM::get_tape_message(int drv)
 250 {
 251         return drec->get_message();
 252 }
 253
 254 void VM::push_play(int drv)
 255 {
 256         drec->set_ff_rew(0);
 257         drec->set_remote(true);
 258 }
 259
 260 void VM::push_stop(int drv)
 261 {
 262         drec->set_remote(false);
 263 }
 264
 265 void VM::push_fast_forward(int drv)
 266 {
 267         drec->set_ff_rew(1);
 268         drec->set_remote(true);
 269 }
 270
 271 void VM::push_fast_rewind(int drv)
 272 {
 273         drec->set_ff_rew(-1);
 274         drec->set_remote(true);
 275 }
 276
 277 bool VM::is_frame_skippable()
 278 {
 279         return event->is_frame_skippable();
 280 }
 281
 282 void VM::update_config()
 283 {
 284         for(DEVICE* device = first_device; device; device = device->next_device) {
 285                 device->update_config();
 286         }
 287 }
 288
 289 #define STATE_VERSION   2
 290
 291 void VM::save_state(FILEIO* state_fio)
 292 {
 293         state_fio->FputUint32(STATE_VERSION);
 294
 295         for(DEVICE* device = first_device; device; device = device->next_device) {
 296                 device->save_state(state_fio);
 297         }
 298 }
 299
 300 bool VM::load_state(FILEIO* state_fio)
 301 {
 302         if(state_fio->FgetUint32() != STATE_VERSION) {
 303                 return false;
 304         }
 305         for(DEVICE* device = first_device; device; device = device->next_device) {
 306                 if(!device->load_state(state_fio)) {
 307                         return false;
 308                 }
 309         }
 310         return true;
 311 }
 312