source/src/vm/babbage2nd/babbage2nd.cpp

   1 /*
   2         Gijutsu-Hyoron-Sha Babbage-2nd Emulator 'eBabbage-2nd'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2009.12.26 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "babbage2nd.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../io.h"
  16 #include "../memory.h"
  17 #include "../z80.h"
  18 #include "../z80ctc.h"
  19 #include "../z80pio.h"
  20
  21 #ifdef USE_DEBUGGER
  22 #include "../debugger.h"
  23 #endif
  24
  25 #include "display.h"
  26 #include "keyboard.h"
  27
  28 // ----------------------------------------------------------------------------
  29 // initialize
  30 // ----------------------------------------------------------------------------
  31
  32 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  33 {
  34         // create devices
  35         first_device = last_device = NULL;
  36         dummy = new DEVICE(this, emu);  // must be 1st device
  37         event = new EVENT(this, emu);   // must be 2nd device
  38
  39         io = new IO(this, emu);
  40         memory = new MEMORY(this, emu);
  41         cpu = new Z80(this, emu);
  42         ctc = new Z80CTC(this, emu);
  43         pio1 = new Z80PIO(this, emu);
  44         pio1->set_device_name(_T("Z80 PIO (LEDs)"));
  45         pio2 = new Z80PIO(this, emu);
  46         pio2->set_device_name(_T("Z80 PIO (7-Seg/Keyboard)"));
  47
  48         display = new DISPLAY(this, emu);
  49         keyboard = new KEYBOARD(this, emu);
  50
  51         // Set names
  52 #if defined(_USE_QT)
  53         dummy->set_device_name(_T("1st Dummy"));
  54         pio1->set_device_name(_T("Z80 PIO(LEDs)"));
  55         pio2->set_device_name(_T("Z80 PIO(7SEG/KEYBOARD)"));
  56 #endif
  57         // set contexts
  58         event->set_context_cpu(cpu);
  59
  60         pio2->set_context_port_b(display, SIG_DISPLAY_7SEG_LED, 0xff, 0);
  61         keyboard->set_context_pio(pio2);
  62         // p.145, fig.3-4
  63         ctc->set_context_zc2(ctc, SIG_Z80CTC_TRIG_1, 1);
  64         ctc->set_context_zc1(ctc, SIG_Z80CTC_TRIG_0, 1);
  65         // p.114, fig.2-52
  66         pio1->set_context_port_b(display, SIG_DISPLAY_8BIT_LED, 0xff, 0);
  67         //pio1->set_context_port_b(pio1, SIG_Z80PIO_PORT_A, 0xff, 0);
  68
  69         // cpu bus
  70         cpu->set_context_mem(memory);
  71         cpu->set_context_io(io);
  72         cpu->set_context_intr(ctc);
  73 #ifdef USE_DEBUGGER
  74         cpu->set_context_debugger(new DEBUGGER(this, emu));
  75 #endif
  76
  77         // z80 family daisy chain
  78         ctc->set_context_intr(cpu, 0);
  79         ctc->set_context_child(pio1);
  80         pio1->set_context_intr(cpu, 1);
  81         pio1->set_context_child(pio2);
  82         pio2->set_context_intr(cpu, 2);
  83
  84         // memory bus
  85         memset(ram, 0, sizeof(ram));
  86         memset(rom, 0xff, sizeof(rom));
  87
  88         memory->read_bios(_T("MON.ROM"), rom, sizeof(rom));
  89
  90         memory->set_memory_r(0x0000, 0x07ff, rom);
  91         memory->set_memory_rw(0x1000, 0x17ff, ram);
  92
  93         // i/o bus
  94         io->set_iomap_range_rw(0x00, 0x03, ctc);
  95         io->set_iomap_range_rw(0x10, 0x13, pio1);
  96         io->set_iomap_range_rw(0x20, 0x23, pio2);
  97
  98         // initialize all devices
  99 #if defined(__GIT_REPO_VERSION)
 100         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 101 #endif
 102         for(DEVICE* device = first_device; device; device = device->next_device) {
 103                 device->initialize();
 104         }
 105         decl_state();
 106 }
 107
 108 VM::~VM()
 109 {
 110         // delete all devices
 111         for(DEVICE* device = first_device; device;) {
 112                 DEVICE *next_device = device->next_device;
 113                 device->release();
 114                 delete device;
 115                 device = next_device;
 116         }
 117 }
 118
 119 DEVICE* VM::get_device(int id)
 120 {
 121         for(DEVICE* device = first_device; device; device = device->next_device) {
 122                 if(device->this_device_id == id) {
 123                         return device;
 124                 }
 125         }
 126         return NULL;
 127 }
 128
 129 // ----------------------------------------------------------------------------
 130 // drive virtual machine
 131 // ----------------------------------------------------------------------------
 132
 133 void VM::reset()
 134 {
 135         // reset all devices
 136         for(DEVICE* device = first_device; device; device = device->next_device) {
 137                 device->reset();
 138         }
 139 }
 140
 141 void VM::run()
 142 {
 143         event->drive();
 144 }
 145
 146 // ----------------------------------------------------------------------------
 147 // debugger
 148 // ----------------------------------------------------------------------------
 149
 150 #ifdef USE_DEBUGGER
 151 DEVICE *VM::get_cpu(int index)
 152 {
 153         if(index == 0) {
 154                 return cpu;
 155         }
 156         return NULL;
 157 }
 158 #endif
 159
 160 // ----------------------------------------------------------------------------
 161 // draw screen
 162 // ----------------------------------------------------------------------------
 163
 164 void VM::draw_screen()
 165 {
 166         display->draw_screen();
 167 }
 168
 169 // ----------------------------------------------------------------------------
 170 // soud manager
 171 // ----------------------------------------------------------------------------
 172
 173 void VM::initialize_sound(int rate, int samples)
 174 {
 175         // init sound manager
 176         event->initialize_sound(rate, samples);
 177 }
 178
 179 uint16_t* VM::create_sound(int* extra_frames)
 180 {
 181         return event->create_sound(extra_frames);
 182 }
 183
 184 int VM::get_sound_buffer_ptr()
 185 {
 186         return event->get_sound_buffer_ptr();
 187 }
 188
 189 // ----------------------------------------------------------------------------
 190 // notify key
 191 // ----------------------------------------------------------------------------
 192
 193 void VM::key_down(int code, bool repeat)
 194 {
 195         keyboard->key_down(code);
 196 }
 197
 198 void VM::key_up(int code)
 199 {
 200         //keyboard->key_up(code);
 201 }
 202
 203 // ----------------------------------------------------------------------------
 204 // user interface
 205 // ----------------------------------------------------------------------------
 206
 207 void VM::load_binary(int drv, const _TCHAR* file_path)
 208 {
 209         if(drv == 0) {
 210                 memory->read_image(file_path, ram, sizeof(ram));
 211         }
 212 }
 213
 214 void VM::save_binary(int drv, const _TCHAR* file_path)
 215 {
 216         if(drv == 0) {
 217                 memory->write_image(file_path, ram, sizeof(ram));
 218         }
 219 }
 220
 221 bool VM::is_frame_skippable()
 222 {
 223         return event->is_frame_skippable();
 224 }
 225
 226 void VM::update_config()
 227 {
 228         for(DEVICE* device = first_device; device; device = device->next_device) {
 229                 device->update_config();
 230         }
 231 }
 232
 233 #define STATE_VERSION   2
 234
 235 #include "../../statesub.h"
 236 #include "../../qt/gui/csp_logger.h"
 237 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 238
 239 void VM::decl_state(void)
 240 {
 241         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::BABBAGE2ND_HEAD")), csp_logger);
 242         DECL_STATE_ENTRY_MULTI(void, ram, sizeof(ram));
 243         for(DEVICE* device = first_device; device; device = device->next_device) {
 244                 device->decl_state();
 245         }
 246 }
 247
 248 void VM::save_state(FILEIO* state_fio)
 249 {
 250         //state_fio->FputUint32(STATE_VERSION);
 251
 252         if(state_entry != NULL) {
 253                 state_entry->save_state(state_fio);
 254         }
 255         for(DEVICE* device = first_device; device; device = device->next_device) {
 256                 device->save_state(state_fio);
 257         }
 258         //state_fio->Fwrite(ram, sizeof(ram), 1);
 259 }
 260
 261 bool VM::load_state(FILEIO* state_fio)
 262 {
 263         bool mb = false;
 264         if(state_entry != NULL) {
 265                 mb = state_entry->load_state(state_fio);
 266         }
 267         if(!mb) {
 268                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 269                 return false;
 270         }
 271         for(DEVICE* device = first_device; device; device = device->next_device) {
 272                 if(!device->load_state(state_fio)) {
 273                         return false;
 274                 }
 275         }
 276         return true;
 277 }
 278