source/src/vm/hc80/hc80.cpp

   1 /*
   2         EPSON HC-80 Emulator 'eHC-80'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2008.03.14 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "hc80.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../beep.h"
  16 #include "../i8251.h"
  17 #include "../ptf20.h"
  18 #include "../z80.h"
  19
  20 #ifdef USE_DEBUGGER
  21 #include "../debugger.h"
  22 #endif
  23
  24 #include "io.h"
  25 #include "memory.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         beep = new BEEP(this, emu);
  40         sio = new I8251(this, emu);
  41         tf20 = new PTF20(this, emu);
  42         cpu = new Z80(this, emu);
  43
  44         io = new IO(this, emu);
  45         memory = new MEMORY(this, emu);
  46         // set contexts
  47         event->set_context_cpu(cpu);
  48         event->set_context_sound(beep);
  49
  50         tf20->set_context_sio(io, SIG_IO_TF20);
  51
  52         io->set_context_cpu(cpu);
  53         io->set_context_mem(memory);
  54         io->set_context_sio(sio);
  55         io->set_context_beep(beep);
  56         io->set_context_tf20(tf20);
  57
  58         // cpu bus
  59         cpu->set_context_mem(memory);
  60         cpu->set_context_io(io);
  61         cpu->set_context_intr(io);
  62 #ifdef USE_DEBUGGER
  63         cpu->set_context_debugger(new DEBUGGER(this, emu));
  64 #endif
  65
  66         // initialize all devices
  67         for(DEVICE* device = first_device; device; device = device->next_device) {
  68                 device->initialize();
  69         }
  70         decl_state();
  71 }
  72
  73 VM::~VM()
  74 {
  75         // delete all devices
  76         for(DEVICE* device = first_device; device;) {
  77                 DEVICE *next_device = device->next_device;
  78                 device->release();
  79                 delete device;
  80                 device = next_device;
  81         }
  82 }
  83
  84 DEVICE* VM::get_device(int id)
  85 {
  86         for(DEVICE* device = first_device; device; device = device->next_device) {
  87                 if(device->this_device_id == id) {
  88                         return device;
  89                 }
  90         }
  91         return NULL;
  92 }
  93
  94 // ----------------------------------------------------------------------------
  95 // drive virtual machine
  96 // ----------------------------------------------------------------------------
  97
  98 void VM::reset()
  99 {
 100         // reset all devices
 101         for(DEVICE* device = first_device; device; device = device->next_device) {
 102                 device->reset();
 103         }
 104 }
 105
 106 void VM::special_reset()
 107 {
 108         // system reset
 109         for(DEVICE* device = first_device; device; device = device->next_device) {
 110                 device->reset();
 111         }
 112         io->sysreset();
 113 }
 114
 115 void VM::run()
 116 {
 117         event->drive();
 118 }
 119
 120 // ----------------------------------------------------------------------------
 121 // debugger
 122 // ----------------------------------------------------------------------------
 123
 124 #ifdef USE_DEBUGGER
 125 DEVICE *VM::get_cpu(int index)
 126 {
 127         if(index == 0) {
 128                 return cpu;
 129         }
 130         return NULL;
 131 }
 132 #endif
 133
 134 // ----------------------------------------------------------------------------
 135 // draw screen
 136 // ----------------------------------------------------------------------------
 137
 138 void VM::draw_screen()
 139 {
 140         io->draw_screen();
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // soud manager
 145 // ----------------------------------------------------------------------------
 146
 147 void VM::initialize_sound(int rate, int samples)
 148 {
 149         // init sound manager
 150         event->initialize_sound(rate, samples);
 151
 152         // init sound gen
 153         beep->initialize_sound(rate, 1000, 8000);
 154 }
 155
 156 uint16_t* VM::create_sound(int* extra_frames)
 157 {
 158         return event->create_sound(extra_frames);
 159 }
 160
 161 int VM::get_sound_buffer_ptr()
 162 {
 163         return event->get_sound_buffer_ptr();
 164 }
 165
 166 #ifdef USE_SOUND_VOLUME
 167 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 168 {
 169         if(ch == 0) {
 170                 beep->set_volume(0, decibel_l, decibel_r);
 171         }
 172 }
 173 #endif
 174
 175 // ----------------------------------------------------------------------------
 176 // notify key
 177 // ----------------------------------------------------------------------------
 178
 179 void VM::key_down(int code, bool repeat)
 180 {
 181         io->key_down(code);
 182 }
 183
 184 void VM::key_up(int code)
 185 {
 186         io->key_up(code);
 187 }
 188
 189 // ----------------------------------------------------------------------------
 190 // user interface
 191 // ----------------------------------------------------------------------------
 192
 193 void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 194 {
 195         tf20->open_disk(drv, file_path, bank);
 196 }
 197
 198 void VM::close_floppy_disk(int drv)
 199 {
 200         tf20->close_disk(drv);
 201 }
 202
 203 bool VM::is_floppy_disk_inserted(int drv)
 204 {
 205         return tf20->is_disk_inserted(drv);
 206 }
 207
 208 void VM::is_floppy_disk_protected(int drv, bool value)
 209 {
 210         tf20->is_disk_protected(drv, value);
 211 }
 212
 213 bool VM::is_floppy_disk_protected(int drv)
 214 {
 215         return tf20->is_disk_protected(drv);
 216 }
 217
 218 uint32_t VM::is_floppy_disk_accessed()
 219 {
 220         return tf20->read_signal(0);
 221 }
 222
 223 bool VM::is_frame_skippable()
 224 {
 225         return event->is_frame_skippable();
 226 }
 227
 228 void VM::update_config()
 229 {
 230         for(DEVICE* device = first_device; device; device = device->next_device) {
 231                 device->update_config();
 232         }
 233 }
 234
 235 #define STATE_VERSION   2
 236
 237 #include "../../statesub.h"
 238 #include "../../qt/gui/csp_logger.h"
 239 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 240
 241 void VM::decl_state(void)
 242 {
 243         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::HC_80_HEAD")), csp_logger);
 244         for(DEVICE* device = first_device; device; device = device->next_device) {
 245                 device->decl_state();
 246         }
 247 }
 248
 249 void VM::save_state(FILEIO* state_fio)
 250 {
 251         //state_fio->FputUint32(STATE_VERSION);
 252
 253         if(state_entry != NULL) {
 254                 state_entry->save_state(state_fio);
 255         }
 256         for(DEVICE* device = first_device; device; device = device->next_device) {
 257                 device->save_state(state_fio);
 258         }
 259 }
 260
 261 bool VM::load_state(FILEIO* state_fio)
 262 {
 263         //if(state_fio->FgetUint32() != STATE_VERSION) {
 264         //      return false;
 265         //}
 266         bool mb = false;
 267         if(state_entry != NULL) {
 268                 mb = state_entry->load_state(state_fio);
 269         }
 270         if(!mb) {
 271                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 272                 return false;
 273         }
 274         for(DEVICE* device = first_device; device; device = device->next_device) {
 275                 if(!device->load_state(state_fio)) {
 276                         return false;
 277                 }
 278         }
 279         return true;
 280 }
 281