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         inserted = false;
  82 }
  83
  84 VM::~VM()
  85 {
  86         // delete all devices
  87         for(DEVICE* device = first_device; device;) {
  88                 DEVICE *next_device = device->next_device;
  89                 device->release();
  90                 delete device;
  91                 device = next_device;
  92         }
  93 }
  94
  95 DEVICE* VM::get_device(int id)
  96 {
  97         for(DEVICE* device = first_device; device; device = device->next_device) {
  98                 if(device->this_device_id == id) {
  99                         return device;
 100                 }
 101         }
 102         return NULL;
 103 }
 104
 105 // ----------------------------------------------------------------------------
 106 // drive virtual machine
 107 // ----------------------------------------------------------------------------
 108
 109 void VM::reset()
 110 {
 111         // reset all devices
 112         for(DEVICE* device = first_device; device; device = device->next_device) {
 113                 device->reset();
 114         }
 115 }
 116
 117 void VM::run()
 118 {
 119         event->drive();
 120 }
 121
 122 // ----------------------------------------------------------------------------
 123 // debugger
 124 // ----------------------------------------------------------------------------
 125
 126 #ifdef USE_DEBUGGER
 127 DEVICE *VM::get_cpu(int index)
 128 {
 129         if(index == 0) {
 130                 return cpu;
 131         }
 132         return NULL;
 133 }
 134 #endif
 135
 136 // ----------------------------------------------------------------------------
 137 // draw screen
 138 // ----------------------------------------------------------------------------
 139
 140 void VM::draw_screen()
 141 {
 142         vdp->draw_screen();
 143 }
 144
 145 // ----------------------------------------------------------------------------
 146 // soud manager
 147 // ----------------------------------------------------------------------------
 148
 149 void VM::initialize_sound(int rate, int samples)
 150 {
 151         // init sound manager
 152         event->initialize_sound(rate, samples);
 153
 154         // init sound gen
 155         psg->initialize_sound(rate);
 156 }
 157
 158 uint16_t* VM::create_sound(int* extra_frames)
 159 {
 160         return event->create_sound(extra_frames);
 161 }
 162
 163 int VM::get_sound_buffer_ptr()
 164 {
 165         return event->get_sound_buffer_ptr();
 166 }
 167
 168 #ifdef USE_SOUND_VOLUME
 169 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 170 {
 171         if(ch == 0) {
 172                 psg->set_volume(0, decibel_l, decibel_r);
 173         }
 174 }
 175 #endif
 176
 177 // ----------------------------------------------------------------------------
 178 // user interface
 179 // ----------------------------------------------------------------------------
 180
 181 void VM::open_cart(int drv, const _TCHAR* file_path)
 182 {
 183         if(drv == 0) {
 184                 memset(mem, 0xff, 0x8000);
 185                 inserted = memory->read_image(file_path, mem, 0x8000);
 186                 reset();
 187         }
 188 }
 189
 190 void VM::close_cart(int drv)
 191 {
 192         if(drv == 0) {
 193                 memset(mem, 0xff, 0x8000);
 194                 inserted = false;
 195                 reset();
 196         }
 197 }
 198
 199 bool VM::is_cart_inserted(int drv)
 200 {
 201         if(drv == 0) {
 202                 return inserted;
 203         } else {
 204                 return false;
 205         }
 206 }
 207
 208 bool VM::is_frame_skippable()
 209 {
 210         return event->is_frame_skippable();
 211 }
 212
 213 void VM::update_config()
 214 {
 215         for(DEVICE* device = first_device; device; device = device->next_device) {
 216                 device->update_config();
 217         }
 218 }
 219
 220 #define STATE_VERSION   2
 221
 222
 223 bool VM::process_state(FILEIO* state_fio, bool loading)
 224 {
 225         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 226                 return false;
 227         }
 228         for(DEVICE* device = first_device; device; device = device->next_device) {
 229                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 230                 // const char *name = typeid(*device).name();
 231                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 232                 const char *name = device->get_device_name();
 233                 int len = strlen(name);
 234
 235                 if(!state_fio->StateCheckInt32(len)) {
 236                         if(loading) {
 237                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 238                         }
 239                         return false;
 240                 }
 241                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 242                         if(loading) {
 243                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 244                         }
 245                         return false;
 246                 }
 247                 if(!device->process_state(state_fio, loading)) {
 248                         if(loading) {
 249                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 250                         }
 251                         return false;
 252                 }
 253         }
 254         // Machine specified.
 255         state_fio->StateBuffer(mem, sizeof(mem), 1);
 256         state_fio->StateBool(inserted);
 257         return true;
 258 }