source/src/vm/pv1000/pv1000.cpp

   1 /*
   2         CASIO PV-1000 Emulator 'ePV-1000'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.11.16 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "pv1000.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../io.h"
  16 #include "../memory.h"
  17 #include "../z80.h"
  18
  19 #ifdef USE_DEBUGGER
  20 #include "../debugger.h"
  21 #endif
  22
  23 #include "joystick.h"
  24 #include "psg.h"
  25 #include "vdp.h"
  26
  27 // ----------------------------------------------------------------------------
  28 // initialize
  29 // ----------------------------------------------------------------------------
  30
  31 VM::VM(EMU* parent_emu) : VM_TEMPLATE(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         io = new IO(this, emu);
  40         memory = new MEMORY(this, emu);
  41         cpu = new Z80(this, emu);
  42
  43         joystick = new JOYSTICK(this, emu);
  44         psg = new PSG(this, emu);
  45         vdp = new VDP(this, emu);
  46
  47         // set contexts
  48         event->set_context_cpu(cpu);
  49         event->set_context_sound(psg);
  50
  51         vdp->set_context_cpu(cpu);
  52         vdp->set_memory_ptr(mem);
  53
  54         // cpu bus
  55         cpu->set_context_mem(memory);
  56         cpu->set_context_io(io);
  57         cpu->set_context_intr(dummy);
  58 #ifdef USE_DEBUGGER
  59         cpu->set_context_debugger(new DEBUGGER(this, emu));
  60 #endif
  61
  62         // memory bus
  63         memset(mem, 0xff, 0x8000);
  64         memset(mem + 0x8000, 0, 0x8000);
  65
  66         memory->set_memory_r(0x0000, 0x7fff, mem);
  67         memory->set_memory_rw(0xb800, 0xbfff, mem + 0xb800);
  68
  69         // i/o bus
  70         io->set_iomap_range_w(0xf8, 0xfa, psg);
  71         io->set_iomap_range_rw(0xfc, 0xfd, joystick);
  72         io->set_iomap_range_w(0xfe, 0xff, vdp);
  73
  74         // initialize all devices
  75 #if defined(__GIT_REPO_VERSION)
  76         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
  77 #endif
  78         for(DEVICE* device = first_device; device; device = device->next_device) {
  79                 device->initialize();
  80         }
  81         decl_state();
  82         inserted = false;
  83 }
  84
  85 VM::~VM()
  86 {
  87         // delete all devices
  88         for(DEVICE* device = first_device; device;) {
  89                 DEVICE *next_device = device->next_device;
  90                 device->release();
  91                 delete device;
  92                 device = next_device;
  93         }
  94 }
  95
  96 DEVICE* VM::get_device(int id)
  97 {
  98         for(DEVICE* device = first_device; device; device = device->next_device) {
  99                 if(device->this_device_id == id) {
 100                         return device;
 101                 }
 102         }
 103         return NULL;
 104 }
 105
 106 // ----------------------------------------------------------------------------
 107 // drive virtual machine
 108 // ----------------------------------------------------------------------------
 109
 110 void VM::reset()
 111 {
 112         // reset all devices
 113         for(DEVICE* device = first_device; device; device = device->next_device) {
 114                 device->reset();
 115         }
 116 }
 117
 118 void VM::run()
 119 {
 120         event->drive();
 121 }
 122
 123 // ----------------------------------------------------------------------------
 124 // debugger
 125 // ----------------------------------------------------------------------------
 126
 127 #ifdef USE_DEBUGGER
 128 DEVICE *VM::get_cpu(int index)
 129 {
 130         if(index == 0) {
 131                 return cpu;
 132         }
 133         return NULL;
 134 }
 135 #endif
 136
 137 // ----------------------------------------------------------------------------
 138 // draw screen
 139 // ----------------------------------------------------------------------------
 140
 141 void VM::draw_screen()
 142 {
 143         vdp->draw_screen();
 144 }
 145
 146 // ----------------------------------------------------------------------------
 147 // soud manager
 148 // ----------------------------------------------------------------------------
 149
 150 void VM::initialize_sound(int rate, int samples)
 151 {
 152         // init sound manager
 153         event->initialize_sound(rate, samples);
 154
 155         // init sound gen
 156         psg->initialize_sound(rate);
 157 }
 158
 159 uint16_t* VM::create_sound(int* extra_frames)
 160 {
 161         return event->create_sound(extra_frames);
 162 }
 163
 164 int VM::get_sound_buffer_ptr()
 165 {
 166         return event->get_sound_buffer_ptr();
 167 }
 168
 169 #ifdef USE_SOUND_VOLUME
 170 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 171 {
 172         if(ch == 0) {
 173                 psg->set_volume(0, decibel_l, decibel_r);
 174         }
 175 }
 176 #endif
 177
 178 // ----------------------------------------------------------------------------
 179 // user interface
 180 // ----------------------------------------------------------------------------
 181
 182 void VM::open_cart(int drv, const _TCHAR* file_path)
 183 {
 184         if(drv == 0) {
 185                 memset(mem, 0xff, 0x8000);
 186                 inserted = memory->read_image(file_path, mem, 0x8000);
 187                 reset();
 188         }
 189 }
 190
 191 void VM::close_cart(int drv)
 192 {
 193         if(drv == 0) {
 194                 memset(mem, 0xff, 0x8000);
 195                 inserted = false;
 196                 reset();
 197         }
 198 }
 199
 200 bool VM::is_cart_inserted(int drv)
 201 {
 202         if(drv == 0) {
 203                 return inserted;
 204         } else {
 205                 return false;
 206         }
 207 }
 208
 209 bool VM::is_frame_skippable()
 210 {
 211         return event->is_frame_skippable();
 212 }
 213
 214 void VM::update_config()
 215 {
 216         for(DEVICE* device = first_device; device; device = device->next_device) {
 217                 device->update_config();
 218         }
 219 }
 220
 221 #define STATE_VERSION   2
 222
 223 #include "../../statesub.h"
 224 #include "../../qt/gui/csp_logger.h"
 225 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 226
 227 void VM::decl_state(void)
 228 {
 229         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::PV_1000_HEAD")), csp_logger);
 230
 231         DECL_STATE_ENTRY_1D_ARRAY(mem, sizeof(mem));
 232         DECL_STATE_ENTRY_BOOL(inserted);
 233         for(DEVICE* device = first_device; device; device = device->next_device) {
 234                 device->decl_state();
 235         }
 236 }
 237
 238 void VM::save_state(FILEIO* state_fio)
 239 {
 240         //state_fio->FputUint32(STATE_VERSION);
 241
 242         if(state_entry != NULL) {
 243                 state_entry->save_state(state_fio);
 244         }
 245         for(DEVICE* device = first_device; device; device = device->next_device) {
 246                 device->save_state(state_fio);
 247         }
 248         //state_fio->Fwrite(mem, sizeof(mem), 1);
 249         //state_fio->FputBool(inserted);
 250 }
 251
 252 bool VM::load_state(FILEIO* state_fio)
 253 {
 254         //if(state_fio->FgetUint32() != STATE_VERSION) {
 255         //      return false;
 256         //}
 257         bool mb = false;
 258         if(state_entry != NULL) {
 259                 mb = state_entry->load_state(state_fio);
 260         }
 261         if(!mb) {
 262                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 263                 return false;
 264         }
 265         for(DEVICE* device = first_device; device; device = device->next_device) {
 266                 if(!device->load_state(state_fio)) {
 267                         return false;
 268                 }
 269         }
 270         //state_fio->Fread(mem, sizeof(mem), 1);
 271         //inserted = state_fio->FgetBool();
 272         return true;
 273 }
 274