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         for(DEVICE* device = first_device; device; device = device->next_device) {
  76                 device->initialize();
  77         }
  78         decl_state();
  79         inserted = false;
  80 }
  81
  82 VM::~VM()
  83 {
  84         // delete all devices
  85         for(DEVICE* device = first_device; device;) {
  86                 DEVICE *next_device = device->next_device;
  87                 device->release();
  88                 delete device;
  89                 device = next_device;
  90         }
  91 }
  92
  93 DEVICE* VM::get_device(int id)
  94 {
  95         for(DEVICE* device = first_device; device; device = device->next_device) {
  96                 if(device->this_device_id == id) {
  97                         return device;
  98                 }
  99         }
 100         return NULL;
 101 }
 102
 103 // ----------------------------------------------------------------------------
 104 // drive virtual machine
 105 // ----------------------------------------------------------------------------
 106
 107 void VM::reset()
 108 {
 109         // reset all devices
 110         for(DEVICE* device = first_device; device; device = device->next_device) {
 111                 device->reset();
 112         }
 113 }
 114
 115 void VM::run()
 116 {
 117         event->drive();
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121 // debugger
 122 // ----------------------------------------------------------------------------
 123
 124 #ifdef USE_DEBUGGER
 125 DEVICE *VM::get_cpu(int index)
 126 {
 127         if(index == 0) {
 128                 return cpu;
 129         }
 130         return NULL;
 131 }
 132 #endif
 133
 134 // ----------------------------------------------------------------------------
 135 // draw screen
 136 // ----------------------------------------------------------------------------
 137
 138 void VM::draw_screen()
 139 {
 140         vdp->draw_screen();
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // soud manager
 145 // ----------------------------------------------------------------------------
 146
 147 void VM::initialize_sound(int rate, int samples)
 148 {
 149         // init sound manager
 150         event->initialize_sound(rate, samples);
 151
 152         // init sound gen
 153         psg->initialize_sound(rate);
 154 }
 155
 156 uint16_t* VM::create_sound(int* extra_frames)
 157 {
 158         return event->create_sound(extra_frames);
 159 }
 160
 161 int VM::get_sound_buffer_ptr()
 162 {
 163         return event->get_sound_buffer_ptr();
 164 }
 165
 166 #ifdef USE_SOUND_VOLUME
 167 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 168 {
 169         if(ch == 0) {
 170                 psg->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                 memset(mem, 0xff, 0x8000);
 183                 inserted = memory->read_image(file_path, mem, 0x8000);
 184                 reset();
 185         }
 186 }
 187
 188 void VM::close_cart(int drv)
 189 {
 190         if(drv == 0) {
 191                 memset(mem, 0xff, 0x8000);
 192                 inserted = false;
 193                 reset();
 194         }
 195 }
 196
 197 bool VM::is_cart_inserted(int drv)
 198 {
 199         if(drv == 0) {
 200                 return inserted;
 201         } else {
 202                 return false;
 203         }
 204 }
 205
 206 bool VM::is_frame_skippable()
 207 {
 208         return event->is_frame_skippable();
 209 }
 210
 211 void VM::update_config()
 212 {
 213         for(DEVICE* device = first_device; device; device = device->next_device) {
 214                 device->update_config();
 215         }
 216 }
 217
 218 #define STATE_VERSION   2
 219
 220 #include "../../statesub.h"
 221 #include "../../qt/gui/csp_logger.h"
 222 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 223
 224 void VM::decl_state(void)
 225 {
 226         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::PV_1000_HEAD")), csp_logger);
 227
 228         DECL_STATE_ENTRY_1D_ARRAY(mem, sizeof(mem));
 229         DECL_STATE_ENTRY_BOOL(inserted);
 230         for(DEVICE* device = first_device; device; device = device->next_device) {
 231                 device->decl_state();
 232         }
 233 }
 234
 235 void VM::save_state(FILEIO* state_fio)
 236 {
 237         //state_fio->FputUint32(STATE_VERSION);
 238
 239         if(state_entry != NULL) {
 240                 state_entry->save_state(state_fio);
 241         }
 242         for(DEVICE* device = first_device; device; device = device->next_device) {
 243                 device->save_state(state_fio);
 244         }
 245         //state_fio->Fwrite(mem, sizeof(mem), 1);
 246         //state_fio->FputBool(inserted);
 247 }
 248
 249 bool VM::load_state(FILEIO* state_fio)
 250 {
 251         //if(state_fio->FgetUint32() != STATE_VERSION) {
 252         //      return false;
 253         //}
 254         bool mb = false;
 255         if(state_entry != NULL) {
 256                 mb = state_entry->load_state(state_fio);
 257         }
 258         if(!mb) {
 259                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 260                 return false;
 261         }
 262         for(DEVICE* device = first_device; device; device = device->next_device) {
 263                 if(!device->load_state(state_fio)) {
 264                         return false;
 265                 }
 266         }
 267         //state_fio->Fread(mem, sizeof(mem), 1);
 268         //inserted = state_fio->FgetBool();
 269         return true;
 270 }
 271