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
  19 #ifdef USE_DEBUGGER
  20 #include "../debugger.h"
  21 #endif
  22
  23 #include "memory.h"
  24
  25 // ----------------------------------------------------------------------------
  26 // initialize
  27 // ----------------------------------------------------------------------------
  28
  29 VM::VM(EMU* parent_emu) : emu(parent_emu)
  30 {
  31         // create devices
  32         first_device = last_device = NULL;
  33         dummy = new DEVICE(this, emu);  // must be 1st device
  34         event = new EVENT(this, emu);   // must be 2nd device
  35
  36         drec = new DATAREC(this, emu);
  37         cpu = new MC6800(this, emu);
  38         pia = new MC6820(this, emu);
  39
  40         memory = new MEMORY(this, emu);
  41
  42         // Set names
  43 #if defined(_USE_QT)
  44         dummy->set_device_name(_T("1st Dummy"));
  45         event->set_device_name(_T("EVENT"));
  46         cpu->set_device_name(_T("CPU(MC6800)"));
  47         pia->set_device_name(_T("MC6820 PIA"));
  48         memory->set_device_name(_T("MEMORY"));
  49 #endif
  50         // set contexts
  51         event->set_context_cpu(cpu);
  52         event->set_context_sound(drec);
  53         event->set_context_sound(memory);
  54
  55         drec->set_context_ear(memory, SIG_MEMORY_DATAREC_EAR, 1);
  56
  57         memory->set_context_drec(drec);
  58         memory->set_context_cpu(cpu);
  59         memory->set_context_pia(pia);
  60
  61         // cpu bus
  62         cpu->set_context_mem(memory);
  63 #ifdef USE_DEBUGGER
  64         cpu->set_context_debugger(new DEBUGGER(this, emu));
  65 #endif
  66
  67         // initialize all devices
  68         for(DEVICE* device = first_device; device; device = device->next_device) {
  69                 device->initialize();
  70         }
  71 }
  72
  73 VM::~VM()
  74 {
  75         // delete all devices
  76         for(DEVICE* device = first_device; device;) {
  77                 DEVICE *next_device = device->next_device;
  78                 device->release();
  79                 delete device;
  80                 device = next_device;
  81         }
  82 }
  83
  84 DEVICE* VM::get_device(int id)
  85 {
  86         for(DEVICE* device = first_device; device; device = device->next_device) {
  87                 if(device->this_device_id == id) {
  88                         return device;
  89                 }
  90         }
  91         return NULL;
  92 }
  93
  94 // ----------------------------------------------------------------------------
  95 // drive virtual machine
  96 // ----------------------------------------------------------------------------
  97
  98 void VM::reset()
  99 {
 100         // reset all devices
 101         for(DEVICE* device = first_device; device; device = device->next_device) {
 102                 device->reset();
 103         }
 104 }
 105
 106 void VM::special_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::run()
 115 {
 116         event->drive();
 117 }
 118
 119 double VM::get_frame_rate()
 120 {
 121         return event->get_frame_rate();
 122 }
 123
 124 // ----------------------------------------------------------------------------
 125 // debugger
 126 // ----------------------------------------------------------------------------
 127
 128 #ifdef USE_DEBUGGER
 129 DEVICE *VM::get_cpu(int index)
 130 {
 131         if(index == 0) {
 132                 return cpu;
 133         }
 134         return NULL;
 135 }
 136 #endif
 137
 138 // ----------------------------------------------------------------------------
 139 // draw screen
 140 // ----------------------------------------------------------------------------
 141
 142 void VM::draw_screen()
 143 {
 144         memory->draw_screen();
 145 }
 146
 147 // ----------------------------------------------------------------------------
 148 // soud manager
 149 // ----------------------------------------------------------------------------
 150
 151 void VM::initialize_sound(int rate, int samples)
 152 {
 153         // init sound manager
 154         event->initialize_sound(rate, samples);
 155 }
 156
 157 uint16_t* VM::create_sound(int* extra_frames)
 158 {
 159         return event->create_sound(extra_frames);
 160 }
 161
 162 int VM::get_sound_buffer_ptr()
 163 {
 164         return event->get_sound_buffer_ptr();
 165 }
 166
 167 #ifdef USE_SOUND_VOLUME
 168 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 169 {
 170         if(ch == 0) {
 171                 memory->set_volume(0, decibel_l, decibel_r);
 172         } else if(ch == 1) {
 173                 drec->set_volume(0, decibel_l, decibel_r);
 174         }
 175 }
 176 #endif
 177
 178 // ----------------------------------------------------------------------------
 179 // notify key
 180 // ----------------------------------------------------------------------------
 181
 182 void VM::key_down(int code, bool repeat)
 183 {
 184         if(!repeat) {
 185                 memory->key_down(code);
 186         }
 187 }
 188
 189 void VM::key_up(int code)
 190 {
 191 }
 192
 193 // ----------------------------------------------------------------------------
 194 // user interface
 195 // ----------------------------------------------------------------------------
 196
 197 void VM::play_tape(const _TCHAR* file_path)
 198 {
 199         drec->play_tape(file_path);
 200         push_play();
 201 }
 202
 203 void VM::rec_tape(const _TCHAR* file_path)
 204 {
 205         drec->rec_tape(file_path);
 206         push_play();
 207 }
 208
 209 void VM::close_tape()
 210 {
 211         push_stop();
 212         drec->close_tape();
 213 }
 214
 215 bool VM::is_tape_inserted()
 216 {
 217         return drec->is_tape_inserted();
 218 }
 219
 220 bool VM::is_tape_playing()
 221 {
 222         return drec->is_tape_playing();
 223 }
 224
 225 bool VM::is_tape_recording()
 226 {
 227         return drec->is_tape_recording();
 228 }
 229
 230 int VM::get_tape_position()
 231 {
 232         return drec->get_tape_position();
 233 }
 234
 235 void VM::push_play()
 236 {
 237         drec->set_ff_rew(0);
 238         drec->set_remote(true);
 239 }
 240
 241 void VM::push_stop()
 242 {
 243         drec->set_remote(false);
 244 }
 245
 246 void VM::push_fast_forward()
 247 {
 248         drec->set_ff_rew(1);
 249         drec->set_remote(true);
 250 }
 251
 252 void VM::push_fast_rewind()
 253 {
 254         drec->set_ff_rew(-1);
 255         drec->set_remote(true);
 256 }
 257
 258 bool VM::is_frame_skippable()
 259 {
 260         return event->is_frame_skippable();
 261 }
 262
 263 void VM::update_config()
 264 {
 265         for(DEVICE* device = first_device; device; device = device->next_device) {
 266                 device->update_config();
 267         }
 268 }
 269
 270 #define STATE_VERSION   1
 271
 272 void VM::save_state(FILEIO* state_fio)
 273 {
 274         state_fio->FputUint32(STATE_VERSION);
 275
 276         for(DEVICE* device = first_device; device; device = device->next_device) {
 277                 device->save_state(state_fio);
 278         }
 279 }
 280
 281 bool VM::load_state(FILEIO* state_fio)
 282 {
 283         if(state_fio->FgetUint32() != STATE_VERSION) {
 284                 return false;
 285         }
 286         for(DEVICE* device = first_device; device; device = device->next_device) {
 287                 if(!device->load_state(state_fio)) {
 288                         return false;
 289                 }
 290         }
 291         return true;
 292 }
 293