source/src/vm/pyuta/pyuta.cpp

   1 /*
   2         TOMY PyuTa Emulator 'ePyuTa'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2007.07.15 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "pyuta.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../noise.h"
  17 #include "../sn76489an.h"
  18 #include "../tms9918a.h"
  19 #include "../tms9995.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "memory.h"
  26
  27 // ----------------------------------------------------------------------------
  28 // initialize
  29 // ----------------------------------------------------------------------------
  30
  31 VM::VM(EMU* parent_emu) : emu(parent_emu)
  32 {
  33         // create devices
  34         first_device = last_device = NULL;
  35         dummy = new DEVICE(this, emu);  // must be 1st device
  36         event = new EVENT(this, emu);   // must be 2nd device
  37         dummy->set_device_name(_T("1st Dummy"));
  38
  39         drec = new DATAREC(this, emu);
  40         drec->set_context_noise_play(new NOISE(this, emu));
  41         drec->set_context_noise_stop(new NOISE(this, emu));
  42         drec->set_context_noise_fast(new NOISE(this, emu));
  43         psg = new SN76489AN(this, emu);
  44         vdp = new TMS9918A(this, emu);
  45         cpu = new TMS9995(this, emu);
  46
  47         memory = new MEMORY(this, emu);
  48
  49         // set contexts
  50         event->set_context_cpu(cpu);
  51         event->set_context_sound(psg);
  52         event->set_context_sound(drec);
  53         event->set_context_sound(drec->get_context_noise_play());
  54         event->set_context_sound(drec->get_context_noise_stop());
  55         event->set_context_sound(drec->get_context_noise_fast());
  56
  57         drec->set_context_ear(memory, 0, 1);
  58         memory->set_context_cmt(drec);
  59         memory->set_context_cpu(cpu);
  60         memory->set_context_psg(psg);
  61         memory->set_context_vdp(vdp);
  62
  63         // cpu bus
  64         cpu->set_context_mem(memory);
  65         cpu->set_context_io(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::run()
 110 {
 111         event->drive();
 112 }
 113
 114 // ----------------------------------------------------------------------------
 115 // debugger
 116 // ----------------------------------------------------------------------------
 117
 118 #ifdef USE_DEBUGGER
 119 DEVICE *VM::get_cpu(int index)
 120 {
 121         if(index == 0) {
 122                 return cpu;
 123         }
 124         return NULL;
 125 }
 126 #endif
 127
 128 // ----------------------------------------------------------------------------
 129 // draw screen
 130 // ----------------------------------------------------------------------------
 131
 132 void VM::draw_screen()
 133 {
 134         vdp->draw_screen();
 135 }
 136
 137 // ----------------------------------------------------------------------------
 138 // soud manager
 139 // ----------------------------------------------------------------------------
 140
 141 void VM::initialize_sound(int rate, int samples)
 142 {
 143         // init sound manager
 144         event->initialize_sound(rate, samples);
 145
 146         // init sound gen
 147         psg->initialize_sound(rate, 3579545, 8000);
 148 }
 149
 150 uint16_t* VM::create_sound(int* extra_frames)
 151 {
 152         return event->create_sound(extra_frames);
 153 }
 154
 155 int VM::get_sound_buffer_ptr()
 156 {
 157         return event->get_sound_buffer_ptr();
 158 }
 159
 160 #ifdef USE_SOUND_VOLUME
 161 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 162 {
 163         if(ch == 0) {
 164                 psg->set_volume(0, decibel_l, decibel_r);
 165         } else if(ch == 1) {
 166                 drec->set_volume(0, decibel_l, decibel_r);
 167         } else if(ch == 2) {
 168                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 169                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 170                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 171         }
 172 }
 173 #endif
 174
 175 // ----------------------------------------------------------------------------
 176 // user interface
 177 // ----------------------------------------------------------------------------
 178
 179 void VM::open_cart(int drv, const _TCHAR* file_path)
 180 {
 181         if(drv == 0) {
 182                 memory->open_cart(file_path);
 183                 reset();
 184         }
 185 }
 186
 187 void VM::close_cart(int drv)
 188 {
 189         if(drv == 0) {
 190                 memory->close_cart();
 191                 reset();
 192         }
 193 }
 194
 195 bool VM::is_cart_inserted(int drv)
 196 {
 197         if(drv == 0) {
 198                 return memory->is_cart_inserted();
 199         } else {
 200                 return false;
 201         }
 202 }
 203
 204 void VM::play_tape(int drv, const _TCHAR* file_path)
 205 {
 206         drec->play_tape(file_path);
 207 }
 208
 209 void VM::rec_tape(int drv, const _TCHAR* file_path)
 210 {
 211         drec->rec_tape(file_path);
 212 }
 213
 214 void VM::close_tape(int drv)
 215 {
 216         emu->lock_vm();
 217         drec->close_tape();
 218         emu->unlock_vm();
 219 }
 220
 221 bool VM::is_tape_inserted(int drv)
 222 {
 223         return drec->is_tape_inserted();
 224 }
 225
 226 bool VM::is_tape_playing(int drv)
 227 {
 228         return drec->is_tape_playing();
 229 }
 230
 231 bool VM::is_tape_recording(int drv)
 232 {
 233         return drec->is_tape_recording();
 234 }
 235
 236 int VM::get_tape_position(int drv)
 237 {
 238         return drec->get_tape_position();
 239 }
 240
 241 const _TCHAR* VM::get_tape_message(int drv)
 242 {
 243         return drec->get_message();
 244 }
 245
 246 bool VM::is_frame_skippable()
 247 {
 248         return event->is_frame_skippable();
 249 }
 250
 251 void VM::update_config()
 252 {
 253         for(DEVICE* device = first_device; device; device = device->next_device) {
 254                 device->update_config();
 255         }
 256 }
 257
 258 #define STATE_VERSION   3
 259
 260 void VM::save_state(FILEIO* state_fio)
 261 {
 262         state_fio->FputUint32(STATE_VERSION);
 263
 264         for(DEVICE* device = first_device; device; device = device->next_device) {
 265                 device->save_state(state_fio);
 266         }
 267 }
 268
 269 bool VM::load_state(FILEIO* state_fio)
 270 {
 271         if(state_fio->FgetUint32() != STATE_VERSION) {
 272                 return false;
 273         }
 274         for(DEVICE* device = first_device; device; device = device->next_device) {
 275                 if(!device->load_state(state_fio)) {
 276                         return false;
 277                 }
 278         }
 279         return true;
 280 }
 281