source/src/vm/rx78/rx78.cpp

   1 /*
   2         BANDAI RX-78 Emulator 'eRX-78'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2006.08.21 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "rx78.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../io.h"
  17 #include "../noise.h"
  18 #include "../sn76489an.h"
  19 #include "../z80.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "cmt.h"
  26 #include "keyboard.h"
  27 #include "memory.h"
  28 #include "printer.h"
  29 #include "vdp.h"
  30
  31 // ----------------------------------------------------------------------------
  32 // initialize
  33 // ----------------------------------------------------------------------------
  34
  35 VM::VM(EMU* parent_emu) : emu(parent_emu)
  36 {
  37         // create devices
  38         first_device = last_device = NULL;
  39         dummy = new DEVICE(this, emu);  // must be 1st device
  40         event = new EVENT(this, emu);   // must be 2nd device
  41         dummy->set_device_name(_T("1st Dummy"));
  42
  43         drec = new DATAREC(this, emu);
  44         drec->set_context_noise_play(new NOISE(this, emu));
  45         drec->set_context_noise_stop(new NOISE(this, emu));
  46         drec->set_context_noise_fast(new NOISE(this, emu));
  47         io = new IO(this, emu);
  48         psg = new SN76489AN(this, emu);
  49         cpu = new Z80(this, emu);
  50
  51         cmt = new CMT(this, emu);
  52         key = new KEYBOARD(this, emu);
  53         memory = new MEMORY(this, emu);
  54         prt = new PRINTER(this, emu);
  55         vdp = new VDP(this, emu);
  56
  57         // set contexts
  58         event->set_context_cpu(cpu);
  59         event->set_context_sound(psg);
  60         event->set_context_sound(drec);
  61         event->set_context_sound(drec->get_context_noise_play());
  62         event->set_context_sound(drec->get_context_noise_stop());
  63         event->set_context_sound(drec->get_context_noise_fast());
  64
  65         drec->set_context_ear(cmt, SIG_CMT_IN, 1);
  66         cmt->set_context_drec(drec);
  67         vdp->set_context_cpu(cpu);
  68         vdp->set_vram_ptr(memory->get_vram());
  69
  70         // cpu bus
  71         cpu->set_context_mem(memory);
  72         cpu->set_context_io(io);
  73         cpu->set_context_intr(dummy);
  74 #ifdef USE_DEBUGGER
  75         cpu->set_context_debugger(new DEBUGGER(this, emu));
  76 #endif
  77
  78         // i/o bus
  79         io->set_iomap_range_rw(0xe2, 0xe3, prt);
  80         io->set_iomap_single_rw(0xf0, cmt);
  81         io->set_iomap_range_w(0xf1, 0xf2, memory);
  82         io->set_iomap_single_rw(0xf4, key);
  83         io->set_iomap_range_w(0xf5, 0xfc, vdp);
  84         io->set_iomap_single_w(0xfe, vdp);
  85         io->set_iomap_single_w(0xff, psg);
  86
  87         // initialize all devices
  88         for(DEVICE* device = first_device; device; device = device->next_device) {
  89                 device->initialize();
  90         }
  91 }
  92
  93 VM::~VM()
  94 {
  95         // delete all devices
  96         for(DEVICE* device = first_device; device;) {
  97                 DEVICE *next_device = device->next_device;
  98                 device->release();
  99                 delete device;
 100                 device = next_device;
 101         }
 102 }
 103
 104 DEVICE* VM::get_device(int id)
 105 {
 106         for(DEVICE* device = first_device; device; device = device->next_device) {
 107                 if(device->this_device_id == id) {
 108                         return device;
 109                 }
 110         }
 111         return NULL;
 112 }
 113
 114 // ----------------------------------------------------------------------------
 115 // debugger
 116 // ----------------------------------------------------------------------------
 117
 118 #ifdef USE_DEBUGGER
 119 DEVICE *VM::get_cpu(int index)
 120 {
 121         if(index == 0) {
 122                 return cpu;
 123         }
 124         return NULL;
 125 }
 126 #endif
 127
 128 // ----------------------------------------------------------------------------
 129 // drive virtual machine
 130 // ----------------------------------------------------------------------------
 131
 132 void VM::reset()
 133 {
 134         // reset all devices
 135         for(DEVICE* device = first_device; device; device = device->next_device) {
 136                 device->reset();
 137         }
 138 }
 139
 140 void VM::run()
 141 {
 142         event->drive();
 143 }
 144
 145 // ----------------------------------------------------------------------------
 146 // draw screen
 147 // ----------------------------------------------------------------------------
 148
 149 void VM::draw_screen()
 150 {
 151         vdp->draw_screen();
 152 }
 153
 154 // ----------------------------------------------------------------------------
 155 // soud manager
 156 // ----------------------------------------------------------------------------
 157
 158 void VM::initialize_sound(int rate, int samples)
 159 {
 160         // init sound manager
 161         event->initialize_sound(rate, samples);
 162
 163         // init sound gen
 164         psg->initialize_sound(rate, 3579545, 8000);
 165 }
 166
 167 uint16_t* VM::create_sound(int* extra_frames)
 168 {
 169         return event->create_sound(extra_frames);
 170 }
 171
 172 int VM::get_sound_buffer_ptr()
 173 {
 174         return event->get_sound_buffer_ptr();
 175 }
 176
 177 #ifdef USE_SOUND_VOLUME
 178 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 179 {
 180         if(ch == 0) {
 181                 psg->set_volume(0, decibel_l, decibel_r);
 182         } else if(ch == 1) {
 183                 drec->set_volume(0, decibel_l, decibel_r);
 184         } else if(ch == 2) {
 185                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 186                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 187                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 188         }
 189 }
 190 #endif
 191
 192 // ----------------------------------------------------------------------------
 193 // user interface
 194 // ----------------------------------------------------------------------------
 195
 196 void VM::open_cart(int drv, const _TCHAR* file_path)
 197 {
 198         if(drv == 0) {
 199                 memory->open_cart(file_path);
 200                 reset();
 201         }
 202 }
 203
 204 void VM::close_cart(int drv)
 205 {
 206         if(drv == 0) {
 207                 memory->close_cart();
 208                 reset();
 209         }
 210 }
 211
 212 bool VM::is_cart_inserted(int drv)
 213 {
 214         if(drv == 0) {
 215                 return memory->is_cart_inserted();
 216         } else {
 217                 return false;
 218         }
 219 }
 220
 221 void VM::play_tape(int drv, const _TCHAR* file_path)
 222 {
 223         drec->play_tape(file_path);
 224 //      drec->set_remote(true);
 225 }
 226
 227 void VM::rec_tape(int drv, const _TCHAR* file_path)
 228 {
 229         drec->rec_tape(file_path);
 230 //      drec->set_remote(true);
 231 }
 232
 233 void VM::close_tape(int drv)
 234 {
 235         emu->lock_vm();
 236         drec->close_tape();
 237         emu->unlock_vm();
 238 //      drec->set_remote(false);
 239 }
 240
 241 bool VM::is_tape_inserted(int drv)
 242 {
 243         return drec->is_tape_inserted();
 244 }
 245
 246 bool VM::is_tape_playing(int drv)
 247 {
 248         return drec->is_tape_playing();
 249 }
 250
 251 bool VM::is_tape_recording(int drv)
 252 {
 253         return drec->is_tape_recording();
 254 }
 255
 256 int VM::get_tape_position(int drv)
 257 {
 258         return drec->get_tape_position();
 259 }
 260
 261 const _TCHAR* VM::get_tape_message(int drv)
 262 {
 263         return drec->get_message();
 264 }
 265
 266 void VM::push_play(int drv)
 267 {
 268         drec->set_ff_rew(0);
 269         drec->set_remote(true);
 270 }
 271
 272 void VM::push_stop(int drv)
 273 {
 274         drec->set_remote(false);
 275 }
 276
 277 void VM::push_fast_forward(int drv)
 278 {
 279         drec->set_ff_rew(1);
 280         drec->set_remote(true);
 281 }
 282
 283 void VM::push_fast_rewind(int drv)
 284 {
 285         drec->set_ff_rew(-1);
 286         drec->set_remote(true);
 287 }
 288
 289 bool VM::is_frame_skippable()
 290 {
 291         return event->is_frame_skippable();
 292 }
 293
 294 void VM::update_config()
 295 {
 296         for(DEVICE* device = first_device; device; device = device->next_device) {
 297                 device->update_config();
 298         }
 299 }
 300
 301 #define STATE_VERSION   3
 302
 303 void VM::save_state(FILEIO* state_fio)
 304 {
 305         state_fio->FputUint32(STATE_VERSION);
 306
 307         for(DEVICE* device = first_device; device; device = device->next_device) {
 308                 device->save_state(state_fio);
 309         }
 310 }
 311
 312 bool VM::load_state(FILEIO* state_fio)
 313 {
 314         if(state_fio->FgetUint32() != STATE_VERSION) {
 315                 return false;
 316         }
 317         for(DEVICE* device = first_device; device; device = device->next_device) {
 318                 if(!device->load_state(state_fio)) {
 319                         return false;
 320                 }
 321         }
 322         return true;
 323 }
 324