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