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         for(DEVICE* device = first_device; device; device = device->next_device) {
  75                 device->initialize();
  76         }
  77         decl_state();
  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::run()
 114 {
 115         event->drive();
 116 }
 117
 118 // ----------------------------------------------------------------------------
 119 // debugger
 120 // ----------------------------------------------------------------------------
 121
 122 #ifdef USE_DEBUGGER
 123 DEVICE *VM::get_cpu(int index)
 124 {
 125         if(index == 0) {
 126                 return cpu;
 127         }
 128         return NULL;
 129 }
 130 #endif
 131
 132 // ----------------------------------------------------------------------------
 133 // draw screen
 134 // ----------------------------------------------------------------------------
 135
 136 void VM::draw_screen()
 137 {
 138         vdp->draw_screen();
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // soud manager
 143 // ----------------------------------------------------------------------------
 144
 145 void VM::initialize_sound(int rate, int samples)
 146 {
 147         // init sound manager
 148         event->initialize_sound(rate, samples);
 149 }
 150
 151 uint16_t* VM::create_sound(int* extra_frames)
 152 {
 153         return event->create_sound(extra_frames);
 154 }
 155
 156 int VM::get_sound_buffer_ptr()
 157 {
 158         return event->get_sound_buffer_ptr();
 159 }
 160
 161 #ifdef USE_SOUND_VOLUME
 162 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 163 {
 164         if(ch == 0) {
 165                 drec->set_volume(0, decibel_l, decibel_r);
 166         } else if(ch == 1) {
 167                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 168                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 169                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 170         }
 171 }
 172 #endif
 173
 174 // ----------------------------------------------------------------------------
 175 // user interface
 176 // ----------------------------------------------------------------------------
 177
 178 void VM::play_tape(int drv, const _TCHAR* file_path)
 179 {
 180         drec->play_tape(file_path);
 181 //      drec->set_remote(true);
 182 }
 183
 184 void VM::rec_tape(int drv, const _TCHAR* file_path)
 185 {
 186         drec->rec_tape(file_path);
 187 //      drec->set_remote(true);
 188 }
 189
 190 void VM::close_tape(int drv)
 191 {
 192         emu->lock_vm();
 193         drec->close_tape();
 194         emu->unlock_vm();
 195 //      drec->set_remote(false);
 196 }
 197
 198 bool VM::is_tape_inserted(int drv)
 199 {
 200         return drec->is_tape_inserted();
 201 }
 202
 203 bool VM::is_tape_playing(int drv)
 204 {
 205         return drec->is_tape_playing();
 206 }
 207
 208 bool VM::is_tape_recording(int drv)
 209 {
 210         return drec->is_tape_recording();
 211 }
 212
 213 int VM::get_tape_position(int drv)
 214 {
 215         return drec->get_tape_position();
 216 }
 217
 218 const _TCHAR* VM::get_tape_message(int drv)
 219 {
 220         return drec->get_message();
 221 }
 222
 223 void VM::push_play(int drv)
 224 {
 225         drec->set_ff_rew(0);
 226         drec->set_remote(true);
 227 }
 228
 229 void VM::push_stop(int drv)
 230 {
 231         drec->set_remote(false);
 232 }
 233
 234 void VM::push_fast_forward(int drv)
 235 {
 236         drec->set_ff_rew(1);
 237         drec->set_remote(true);
 238 }
 239
 240 void VM::push_fast_rewind(int drv)
 241 {
 242         drec->set_ff_rew(-1);
 243         drec->set_remote(true);
 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 #include "../../statesub.h"
 261 #include "../../qt/gui/csp_logger.h"
 262 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 263
 264 void VM::decl_state(void)
 265 {
 266         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::PHC_20_HEAD")), csp_logger);
 267
 268         for(DEVICE* device = first_device; device; device = device->next_device) {
 269                 device->decl_state();
 270         }
 271 }
 272
 273 void VM::save_state(FILEIO* state_fio)
 274 {
 275         //state_fio->FputUint32(STATE_VERSION);
 276
 277         if(state_entry != NULL) {
 278                 state_entry->save_state(state_fio);
 279         }
 280         for(DEVICE* device = first_device; device; device = device->next_device) {
 281                 device->save_state(state_fio);
 282         }
 283 }
 284
 285 bool VM::load_state(FILEIO* state_fio)
 286 {
 287         //if(state_fio->FgetUint32() != STATE_VERSION) {
 288         //      return false;
 289         //}
 290
 291         bool mb = false;
 292         if(state_entry != NULL) {
 293                 mb = state_entry->load_state(state_fio);
 294         }
 295         if(!mb) {
 296                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 297                 return false;
 298         }
 299         for(DEVICE* device = first_device; device; device = device->next_device) {
 300                 if(!device->load_state(state_fio)) {
 301                         return false;
 302                 }
 303         }
 304         return true;
 305 }
 306