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         for(DEVICE* device = first_device; device; device = device->next_device) {
 100                 device->initialize();
 101         }
 102         decl_state();
 103 }
 104
 105 VM::~VM()
 106 {
 107         // delete all devices
 108         for(DEVICE* device = first_device; device;) {
 109                 DEVICE *next_device = device->next_device;
 110                 device->release();
 111                 delete device;
 112                 device = next_device;
 113         }
 114 }
 115
 116 DEVICE* VM::get_device(int id)
 117 {
 118         for(DEVICE* device = first_device; device; device = device->next_device) {
 119                 if(device->this_device_id == id) {
 120                         return device;
 121                 }
 122         }
 123         return NULL;
 124 }
 125
 126 // ----------------------------------------------------------------------------
 127 // drive virtual machine
 128 // ----------------------------------------------------------------------------
 129
 130 void VM::reset()
 131 {
 132         // reset all devices
 133         for(DEVICE* device = first_device; device; device = device->next_device) {
 134                 device->reset();
 135         }
 136 }
 137
 138 void VM::run()
 139 {
 140         event->drive();
 141 }
 142
 143 // ----------------------------------------------------------------------------
 144 // debugger
 145 // ----------------------------------------------------------------------------
 146
 147 #ifdef USE_DEBUGGER
 148 DEVICE *VM::get_cpu(int index)
 149 {
 150         if(index == 0) {
 151                 return cpu;
 152         }
 153         return NULL;
 154 }
 155 #endif
 156
 157 // ----------------------------------------------------------------------------
 158 // draw screen
 159 // ----------------------------------------------------------------------------
 160
 161 void VM::draw_screen()
 162 {
 163         display->draw_screen();
 164 }
 165
 166 // ----------------------------------------------------------------------------
 167 // soud manager
 168 // ----------------------------------------------------------------------------
 169
 170 void VM::initialize_sound(int rate, int samples)
 171 {
 172         // init sound manager
 173         event->initialize_sound(rate, samples);
 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 // ----------------------------------------------------------------------------
 187 // notify key
 188 // ----------------------------------------------------------------------------
 189
 190 void VM::key_down(int code, bool repeat)
 191 {
 192         keyboard->key_down(code);
 193 }
 194
 195 void VM::key_up(int code)
 196 {
 197         //keyboard->key_up(code);
 198 }
 199
 200 // ----------------------------------------------------------------------------
 201 // user interface
 202 // ----------------------------------------------------------------------------
 203
 204 void VM::load_binary(int drv, const _TCHAR* file_path)
 205 {
 206         if(drv == 0) {
 207                 memory->read_image(file_path, ram, sizeof(ram));
 208         }
 209 }
 210
 211 void VM::save_binary(int drv, const _TCHAR* file_path)
 212 {
 213         if(drv == 0) {
 214                 memory->write_image(file_path, ram, sizeof(ram));
 215         }
 216 }
 217
 218 bool VM::is_frame_skippable()
 219 {
 220         return event->is_frame_skippable();
 221 }
 222
 223 void VM::update_config()
 224 {
 225         for(DEVICE* device = first_device; device; device = device->next_device) {
 226                 device->update_config();
 227         }
 228 }
 229
 230 #define STATE_VERSION   2
 231
 232 #include "../../statesub.h"
 233 #include "../../qt/gui/csp_logger.h"
 234 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 235
 236 void VM::decl_state(void)
 237 {
 238         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::BABBAGE2ND_HEAD")), csp_logger);
 239         DECL_STATE_ENTRY_MULTI(void, ram, sizeof(ram));
 240         for(DEVICE* device = first_device; device; device = device->next_device) {
 241                 device->decl_state();
 242         }
 243 }
 244
 245 void VM::save_state(FILEIO* state_fio)
 246 {
 247         //state_fio->FputUint32(STATE_VERSION);
 248
 249         if(state_entry != NULL) {
 250                 state_entry->save_state(state_fio);
 251         }
 252         for(DEVICE* device = first_device; device; device = device->next_device) {
 253                 device->save_state(state_fio);
 254         }
 255         //state_fio->Fwrite(ram, sizeof(ram), 1);
 256 }
 257
 258 bool VM::load_state(FILEIO* state_fio)
 259 {
 260         bool mb = false;
 261         if(state_entry != NULL) {
 262                 mb = state_entry->load_state(state_fio);
 263         }
 264         if(!mb) {
 265                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 266                 return false;
 267         }
 268         for(DEVICE* device = first_device; device; device = device->next_device) {
 269                 if(!device->load_state(state_fio)) {
 270                         return false;
 271                 }
 272         }
 273         return true;
 274 }
 275