source/src/vm/fp200/fp200.cpp

   1 /*
   2         CASIO FP-200 Emulator 'eFP-200'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2013.03.21-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "fp200.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../datarec.h"
  16 #include "../i8080.h"
  17 #include "../memory.h"
  18 #include "../noise.h"
  19 #include "../rp5c01.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "io.h"
  26
  27 // ----------------------------------------------------------------------------
  28 // initialize
  29 // ----------------------------------------------------------------------------
  30
  31 VM::VM(EMU* parent_emu) : emu(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         drec = new DATAREC(this, emu);
  40         drec->set_context_noise_play(new NOISE(this, emu));
  41         drec->set_context_noise_stop(new NOISE(this, emu));
  42         drec->set_context_noise_fast(new NOISE(this, emu));
  43         cpu = new I8080(this, emu);     // i8085
  44         memory = new MEMORY(this, emu);
  45         rtc = new RP5C01(this, emu);
  46
  47         io = new IO(this, emu);
  48         // set contexts
  49         event->set_context_cpu(cpu);
  50         event->set_context_sound(drec);
  51         event->set_context_sound(drec->get_context_noise_play());
  52         event->set_context_sound(drec->get_context_noise_stop());
  53         event->set_context_sound(drec->get_context_noise_fast());
  54
  55         drec->set_context_ear(io, SIG_IO_CMT, 1);
  56         cpu->set_context_sod(io, SIG_IO_SOD, 1);
  57
  58         io->set_context_cpu(cpu);
  59         io->set_context_drec(drec);
  60         io->set_context_rtc(rtc);
  61
  62         // cpu bus
  63         cpu->set_context_mem(memory);
  64         cpu->set_context_io(io);
  65         cpu->set_context_intr(io);
  66 #ifdef USE_DEBUGGER
  67         cpu->set_context_debugger(new DEBUGGER(this, emu));
  68 #endif
  69
  70         // memory bus
  71         memset(rom, 0xff, sizeof(rom));
  72         memset(ram, 0, sizeof(ram));
  73
  74         memory->read_bios(_T("BIOS.ROM"), rom, sizeof(rom));
  75
  76         FILEIO* fio = new FILEIO();
  77         if(fio->Fopen(create_local_path(_T("RAM.BIN")), FILEIO_READ_BINARY)) {
  78                 fio->Fread(ram, sizeof(ram), 1);
  79                 fio->Fclose();
  80         }
  81         delete fio;
  82
  83         memory->set_memory_r(0x0000, 0x7fff, rom);
  84         memory->set_memory_rw(0x8000, 0xffff, ram);
  85         memory->set_wait_rw(0x0000, 0xffff, 1);
  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         FILEIO* fio = new FILEIO();
  96         if(fio->Fopen(create_local_path(_T("RAM.BIN")), FILEIO_WRITE_BINARY)) {
  97                 fio->Fwrite(ram, sizeof(ram), 1);
  98                 fio->Fclose();
  99         }
 100         delete fio;
 101
 102         // delete all devices
 103         for(DEVICE* device = first_device; device;) {
 104                 DEVICE *next_device = device->next_device;
 105                 device->release();
 106                 delete device;
 107                 device = next_device;
 108         }
 109 }
 110
 111 DEVICE* VM::get_device(int id)
 112 {
 113         for(DEVICE* device = first_device; device; device = device->next_device) {
 114                 if(device->this_device_id == id) {
 115                         return device;
 116                 }
 117         }
 118         return NULL;
 119 }
 120
 121 // ----------------------------------------------------------------------------
 122 // drive virtual machine
 123 // ----------------------------------------------------------------------------
 124
 125 void VM::reset()
 126 {
 127         // reset all devices
 128         for(DEVICE* device = first_device; device; device = device->next_device) {
 129                 device->reset();
 130         }
 131 }
 132
 133 void VM::run()
 134 {
 135         event->drive();
 136 }
 137
 138 // ----------------------------------------------------------------------------
 139 // debugger
 140 // ----------------------------------------------------------------------------
 141
 142 #ifdef USE_DEBUGGER
 143 DEVICE *VM::get_cpu(int index)
 144 {
 145         if(index == 0) {
 146                 return cpu;
 147         }
 148         return NULL;
 149 }
 150 #endif
 151
 152 // ----------------------------------------------------------------------------
 153 // draw screen
 154 // ----------------------------------------------------------------------------
 155
 156 void VM::draw_screen()
 157 {
 158         io->draw_screen();
 159 }
 160
 161 // ----------------------------------------------------------------------------
 162 // soud manager
 163 // ----------------------------------------------------------------------------
 164
 165 void VM::initialize_sound(int rate, int samples)
 166 {
 167         // init sound manager
 168         event->initialize_sound(rate, samples);
 169 }
 170
 171 uint16_t* VM::create_sound(int* extra_frames)
 172 {
 173         return event->create_sound(extra_frames);
 174 }
 175
 176 int VM::get_sound_buffer_ptr()
 177 {
 178         return event->get_sound_buffer_ptr();
 179 }
 180
 181 #ifdef USE_SOUND_VOLUME
 182 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 183 {
 184         if(ch == 0) {
 185                 drec->set_volume(0, decibel_l, decibel_r);
 186         } else if(ch == 1) {
 187                 drec->get_context_noise_play()->set_volume(0, decibel_l, decibel_r);
 188                 drec->get_context_noise_stop()->set_volume(0, decibel_l, decibel_r);
 189                 drec->get_context_noise_fast()->set_volume(0, decibel_l, decibel_r);
 190         }
 191 }
 192 #endif
 193
 194 // ----------------------------------------------------------------------------
 195 // notify key
 196 // ----------------------------------------------------------------------------
 197
 198 void VM::key_down(int code, bool repeat)
 199 {
 200         if(!repeat) {
 201                 io->key_down(code);
 202         }
 203 }
 204
 205 void VM::key_up(int code)
 206 {
 207         io->key_up();
 208 }
 209
 210 // ----------------------------------------------------------------------------
 211 // user interface
 212 // ----------------------------------------------------------------------------
 213
 214 void VM::play_tape(int drv, const _TCHAR* file_path)
 215 {
 216         io->close_tape();
 217         drec->play_tape(file_path);
 218 }
 219
 220 void VM::rec_tape(int drv, const _TCHAR* file_path)
 221 {
 222         drec->close_tape();
 223         io->rec_tape(file_path);
 224 }
 225
 226 void VM::close_tape(int drv)
 227 {
 228         emu->lock_vm();
 229         drec->close_tape();
 230         emu->unlock_vm();
 231         io->close_tape();
 232 }
 233
 234 bool VM::is_tape_inserted(int drv)
 235 {
 236         return drec->is_tape_inserted() || io->is_tape_inserted();
 237 }
 238
 239 bool VM::is_tape_playing(int drv)
 240 {
 241         return drec->is_tape_playing();
 242 }
 243
 244 bool VM::is_tape_recording(int drv)
 245 {
 246         return drec->is_tape_recording();
 247 }
 248
 249 int VM::get_tape_position(int drv)
 250 {
 251         return drec->get_tape_position();
 252 }
 253
 254 const _TCHAR* VM::get_tape_message(int drv)
 255 {
 256         return drec->get_message();
 257 }
 258
 259 bool VM::is_frame_skippable()
 260 {
 261         return event->is_frame_skippable();
 262 }
 263
 264 void VM::update_config()
 265 {
 266         for(DEVICE* device = first_device; device; device = device->next_device) {
 267                 device->update_config();
 268         }
 269 }
 270
 271 #define STATE_VERSION   3
 272
 273 void VM::save_state(FILEIO* state_fio)
 274 {
 275         state_fio->FputUint32(STATE_VERSION);
 276
 277         for(DEVICE* device = first_device; device; device = device->next_device) {
 278                 const char *name = typeid(*device).name() + 6; // skip "class "
 279
 280                 state_fio->FputInt32(strlen(name));
 281                 state_fio->Fwrite(name, strlen(name), 1);
 282                 device->save_state(state_fio);
 283         }
 284         state_fio->Fwrite(ram, sizeof(ram), 1);
 285 }
 286
 287 bool VM::load_state(FILEIO* state_fio)
 288 {
 289         if(state_fio->FgetUint32() != STATE_VERSION) {
 290                 return false;
 291         }
 292         for(DEVICE* device = first_device; device; device = device->next_device) {
 293                 const char *name = typeid(*device).name() + 6; // skip "class "
 294
 295                 if(!(state_fio->FgetInt32() == strlen(name) && state_fio->Fcompare(name, strlen(name)))) {
 296                         return false;
 297                 }
 298                 if(!device->load_state(state_fio)) {
 299                         return false;
 300                 }
 301         }
 302         state_fio->Fread(ram, sizeof(ram), 1);
 303         return true;
 304 }
 305