source/src/vm/phc20/phc20.cpp

   1 /*
   2         SANYO PHC-20 Emulator 'ePHC-20'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2010.09.03-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "phc20.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../mc6847.h"
  17 #include "../noise.h"
  18 #include "../z80.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) : VM_TEMPLATE(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         dummy->set_device_name(_T("1st Dummy"));
  37
  38         drec = new DATAREC(this, emu);
  39         drec->set_context_noise_play(new NOISE(this, emu));
  40         drec->set_context_noise_stop(new NOISE(this, emu));
  41         drec->set_context_noise_fast(new NOISE(this, emu));
  42         vdp = new MC6847(this, emu);
  43         cpu = new Z80(this, emu);
  44         memory = new MEMORY(this, emu);
  45         // set contexts
  46         event->set_context_cpu(cpu);
  47         event->set_context_sound(drec);
  48         event->set_context_sound(drec->get_context_noise_play());
  49         event->set_context_sound(drec->get_context_noise_stop());
  50         event->set_context_sound(drec->get_context_noise_fast());
  51
  52         drec->set_context_ear(memory, SIG_MEMORY_SYSPORT, 1);
  53         vdp->set_context_vsync(memory, SIG_MEMORY_SYSPORT, 2);  // vsync / hsync?
  54
  55         vdp->load_font_image(create_local_path(_T("FONT.ROM")));
  56         vdp->set_vram_ptr(memory->get_vram(), 0x400);
  57         vdp->set_context_cpu(cpu);
  58         vdp->write_signal(SIG_MC6847_AG, 0, 0);         // force character mode
  59         vdp->write_signal(SIG_MC6847_AS, 0, 0);
  60         vdp->write_signal(SIG_MC6847_INTEXT, 0, 0);     // force internal character ???
  61         vdp->write_signal(SIG_MC6847_CSS, 0, 0);
  62
  63         memory->set_context_drec(drec);
  64
  65         // cpu bus
  66         cpu->set_context_mem(memory);
  67         cpu->set_context_io(dummy);
  68         cpu->set_context_intr(dummy);
  69 #ifdef USE_DEBUGGER
  70         cpu->set_context_debugger(new DEBUGGER(this, emu));
  71 #endif
  72
  73         // initialize all devices
  74 #if defined(__GIT_REPO_VERSION)
  75         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
  76 #endif
  77         for(DEVICE* device = first_device; device; device = device->next_device) {
  78                 device->initialize();
  79         }
  80         decl_state();
  81 }
  82
  83 VM::~VM()
  84 {
  85         // delete all devices
  86         for(DEVICE* device = first_device; device;) {
  87                 DEVICE *next_device = device->next_device;
  88                 device->release();
  89                 delete device;
  90                 device = next_device;
  91         }
  92 }
  93
  94 DEVICE* VM::get_device(int id)
  95 {
  96         for(DEVICE* device = first_device; device; device = device->next_device) {
  97                 if(device->this_device_id == id) {
  98                         return device;
  99                 }
 100         }
 101         return NULL;
 102 }
 103
 104 // ----------------------------------------------------------------------------
 105 // drive virtual machine
 106 // ----------------------------------------------------------------------------
 107
 108 void VM::reset()
 109 {
 110         // reset all devices
 111         for(DEVICE* device = first_device; device; device = device->next_device) {
 112                 device->reset();
 113         }
 114 }
 115
 116 void VM::run()
 117 {
 118         event->drive();
 119 }
 120
 121 // ----------------------------------------------------------------------------
 122 // debugger
 123 // ----------------------------------------------------------------------------
 124
 125 #ifdef USE_DEBUGGER
 126 DEVICE *VM::get_cpu(int index)
 127 {
 128         if(index == 0) {
 129                 return cpu;
 130         }
 131         return NULL;
 132 }
 133 #endif
 134
 135 // ----------------------------------------------------------------------------
 136 // draw screen
 137 // ----------------------------------------------------------------------------
 138
 139 void VM::draw_screen()
 140 {
 141         vdp->draw_screen();
 142 }
 143
 144 // ----------------------------------------------------------------------------
 145 // soud manager
 146 // ----------------------------------------------------------------------------
 147
 148 void VM::initialize_sound(int rate, int samples)
 149 {
 150         // init sound manager
 151         event->initialize_sound(rate, samples);
 152 }
 153
 154 uint16_t* VM::create_sound(int* extra_frames)
 155 {
 156         return event->create_sound(extra_frames);
 157 }
 158
 159 int VM::get_sound_buffer_ptr()
 160 {
 161         return event->get_sound_buffer_ptr();
 162 }
 163
 164 #ifdef USE_SOUND_VOLUME
 165 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 166 {
 167         if(ch == 0) {
 168                 drec->set_volume(0, decibel_l, decibel_r);
 169         } else if(ch == 1) {
 170                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 171                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 172                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 173         }
 174 }
 175 #endif
 176
 177 // ----------------------------------------------------------------------------
 178 // user interface
 179 // ----------------------------------------------------------------------------
 180
 181 void VM::play_tape(int drv, const _TCHAR* file_path)
 182 {
 183         drec->play_tape(file_path);
 184 //      drec->set_remote(true);
 185 }
 186
 187 void VM::rec_tape(int drv, const _TCHAR* file_path)
 188 {
 189         drec->rec_tape(file_path);
 190 //      drec->set_remote(true);
 191 }
 192
 193 void VM::close_tape(int drv)
 194 {
 195         emu->lock_vm();
 196         drec->close_tape();
 197         emu->unlock_vm();
 198 //      drec->set_remote(false);
 199 }
 200
 201 bool VM::is_tape_inserted(int drv)
 202 {
 203         return drec->is_tape_inserted();
 204 }
 205
 206 bool VM::is_tape_playing(int drv)
 207 {
 208         return drec->is_tape_playing();
 209 }
 210
 211 bool VM::is_tape_recording(int drv)
 212 {
 213         return drec->is_tape_recording();
 214 }
 215
 216 int VM::get_tape_position(int drv)
 217 {
 218         return drec->get_tape_position();
 219 }
 220
 221 const _TCHAR* VM::get_tape_message(int drv)
 222 {
 223         return drec->get_message();
 224 }
 225
 226 void VM::push_play(int drv)
 227 {
 228         drec->set_ff_rew(0);
 229         drec->set_remote(true);
 230 }
 231
 232 void VM::push_stop(int drv)
 233 {
 234         drec->set_remote(false);
 235 }
 236
 237 void VM::push_fast_forward(int drv)
 238 {
 239         drec->set_ff_rew(1);
 240         drec->set_remote(true);
 241 }
 242
 243 void VM::push_fast_rewind(int drv)
 244 {
 245         drec->set_ff_rew(-1);
 246         drec->set_remote(true);
 247 }
 248
 249 bool VM::is_frame_skippable()
 250 {
 251         return event->is_frame_skippable();
 252 }
 253
 254 void VM::update_config()
 255 {
 256         for(DEVICE* device = first_device; device; device = device->next_device) {
 257                 device->update_config();
 258         }
 259 }
 260
 261 #define STATE_VERSION   3
 262
 263 #include "../../statesub.h"
 264 #include "../../qt/gui/csp_logger.h"
 265 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 266
 267 void VM::decl_state(void)
 268 {
 269         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::PHC_20_HEAD")), csp_logger);
 270
 271         for(DEVICE* device = first_device; device; device = device->next_device) {
 272                 device->decl_state();
 273         }
 274 }
 275
 276 void VM::save_state(FILEIO* state_fio)
 277 {
 278         //state_fio->FputUint32(STATE_VERSION);
 279
 280         if(state_entry != NULL) {
 281                 state_entry->save_state(state_fio);
 282         }
 283         for(DEVICE* device = first_device; device; device = device->next_device) {
 284                 device->save_state(state_fio);
 285         }
 286 }
 287
 288 bool VM::load_state(FILEIO* state_fio)
 289 {
 290         //if(state_fio->FgetUint32() != STATE_VERSION) {
 291         //      return false;
 292         //}
 293
 294         bool mb = false;
 295         if(state_entry != NULL) {
 296                 mb = state_entry->load_state(state_fio);
 297         }
 298         if(!mb) {
 299                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 300                 return false;
 301         }
 302         for(DEVICE* device = first_device; device; device = device->next_device) {
 303                 if(!device->load_state(state_fio)) {
 304                         return false;
 305                 }
 306         }
 307         return true;
 308 }
 309