source/src/vm/x07/x07.cpp

   1 /*
   2         CANON X-07 Emulator 'eX-07'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2007.12.26 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "x07.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../beep.h"
  16 #include "../memory.h"
  17 #include "../z80.h"
  18
  19 #ifdef USE_DEBUGGER
  20 #include "../debugger.h"
  21 #endif
  22
  23 #include "io.h"
  24
  25 // ----------------------------------------------------------------------------
  26 // initialize
  27 // ----------------------------------------------------------------------------
  28
  29 VM::VM(EMU* parent_emu) : emu(parent_emu)
  30 {
  31         // create devices
  32         first_device = last_device = NULL;
  33         dummy = new DEVICE(this, emu);  // must be 1st device
  34         event = new EVENT(this, emu);   // must be 2nd device
  35
  36         beep = new BEEP(this, emu);
  37         memory = new MEMORY(this, emu);
  38         cpu = new Z80(this, emu);
  39
  40         io = new IO(this, emu);
  41
  42         // set contexts
  43         event->set_context_cpu(cpu);
  44         event->set_context_sound(beep);
  45
  46         io->set_context_beep(beep);
  47         io->set_context_cpu(cpu);
  48         io->set_context_mem(memory, ram);
  49
  50         // memory bus
  51         memset(ram, 0, sizeof(ram));
  52         memset(app, 0xff, sizeof(app));
  53         memset(tv, 0xff, sizeof(tv));
  54         memset(bas, 0xff, sizeof(bas));
  55
  56         memory->read_bios(_T("APP.ROM"), app, sizeof(app));
  57         memory->read_bios(_T("TV.ROM"), tv, sizeof(tv));
  58         memory->read_bios(_T("BASIC.ROM"), bas, sizeof(bas));
  59
  60         memory->set_memory_rw(0x0000, 0x5fff, ram);
  61         memory->set_memory_r(0x6000, 0x7fff, app);
  62         memory->set_memory_rw(0x8000, 0x97ff, vram);
  63         memory->set_memory_r(0xa000, 0xafff, tv);
  64         memory->set_memory_r(0xb000, 0xffff, bas);
  65
  66         // cpu bus
  67         cpu->set_context_mem(memory);
  68         cpu->set_context_io(io);
  69         cpu->set_context_intr(io);
  70 #ifdef USE_DEBUGGER
  71         cpu->set_context_debugger(new DEBUGGER(this, emu));
  72 #endif
  73
  74         // initialize all devices
  75         for(DEVICE* device = first_device; device; device = device->next_device) {
  76                 device->initialize();
  77         }
  78 }
  79
  80 VM::~VM()
  81 {
  82         // delete all devices
  83         for(DEVICE* device = first_device; device;) {
  84                 DEVICE *next_device = device->next_device;
  85                 device->release();
  86                 delete device;
  87                 device = next_device;
  88         }
  89 }
  90
  91 DEVICE* VM::get_device(int id)
  92 {
  93         for(DEVICE* device = first_device; device; device = device->next_device) {
  94                 if(device->this_device_id == id) {
  95                         return device;
  96                 }
  97         }
  98         return NULL;
  99 }
 100
 101 // ----------------------------------------------------------------------------
 102 // drive virtual machine
 103 // ----------------------------------------------------------------------------
 104
 105 void VM::reset()
 106 {
 107         // reset all devices
 108         for(DEVICE* device = first_device; device; device = device->next_device) {
 109                 device->reset();
 110         }
 111 }
 112
 113 void VM::run()
 114 {
 115         event->drive();
 116 }
 117
 118 // ----------------------------------------------------------------------------
 119 // debugger
 120 // ----------------------------------------------------------------------------
 121
 122 #ifdef USE_DEBUGGER
 123 DEVICE *VM::get_cpu(int index)
 124 {
 125         if(index == 0) {
 126                 return cpu;
 127         }
 128         return NULL;
 129 }
 130 #endif
 131
 132 // ----------------------------------------------------------------------------
 133 // draw screen
 134 // ----------------------------------------------------------------------------
 135
 136 void VM::draw_screen()
 137 {
 138         io->draw_screen();
 139 }
 140
 141 // ----------------------------------------------------------------------------
 142 // soud manager
 143 // ----------------------------------------------------------------------------
 144
 145 void VM::initialize_sound(int rate, int samples)
 146 {
 147         // init sound manager
 148         event->initialize_sound(rate, samples);
 149
 150         // init sound gen
 151         beep->init(rate, 1000, 8000);
 152 }
 153
 154 uint16* VM::create_sound(int* extra_frames)
 155 {
 156         return event->create_sound(extra_frames);
 157 }
 158
 159 int VM::sound_buffer_ptr()
 160 {
 161         return event->sound_buffer_ptr();
 162 }
 163
 164 #ifdef USE_SOUND_VOLUME
 165 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 166 {
 167         if(ch == 0) {
 168                 beep->set_volume(0, decibel_l, decibel_r);
 169         }
 170 }
 171 #endif
 172
 173 // ----------------------------------------------------------------------------
 174 // notify key
 175 // ----------------------------------------------------------------------------
 176
 177 void VM::key_down(int code, bool repeat)
 178 {
 179         io->key_down(code);
 180 }
 181
 182 void VM::key_up(int code)
 183 {
 184         io->key_up(code);
 185 }
 186
 187 // ----------------------------------------------------------------------------
 188 // user interface
 189 // ----------------------------------------------------------------------------
 190
 191 void VM::play_tape(const _TCHAR* file_path)
 192 {
 193         io->play_tape(file_path);
 194 }
 195
 196 void VM::rec_tape(const _TCHAR* file_path)
 197 {
 198         io->rec_tape(file_path);
 199 }
 200
 201 void VM::close_tape()
 202 {
 203         io->close_tape();
 204 }
 205
 206 bool VM::tape_inserted()
 207 {
 208         return io->tape_inserted();
 209 }
 210
 211 bool VM::now_skip()
 212 {
 213         return event->now_skip();
 214 }
 215
 216 void VM::update_config()
 217 {
 218         for(DEVICE* device = first_device; device; device = device->next_device) {
 219                 device->update_config();
 220         }
 221 }
 222
 223 #define STATE_VERSION   1
 224
 225 void VM::save_state(FILEIO* state_fio)
 226 {
 227         state_fio->FputUint32(STATE_VERSION);
 228
 229         for(DEVICE* device = first_device; device; device = device->next_device) {
 230                 device->save_state(state_fio);
 231         }
 232         state_fio->Fwrite(ram, sizeof(ram), 1);
 233         state_fio->Fwrite(vram, sizeof(vram), 1);
 234 }
 235
 236 bool VM::load_state(FILEIO* state_fio)
 237 {
 238         if(state_fio->FgetUint32() != STATE_VERSION) {
 239                 return false;
 240         }
 241         for(DEVICE* device = first_device; device; device = device->next_device) {
 242                 if(!device->load_state(state_fio)) {
 243                         return false;
 244                 }
 245         }
 246         state_fio->Fread(ram, sizeof(ram), 1);
 247         state_fio->Fread(vram, sizeof(vram), 1);
 248         return true;
 249 }
 250