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 using BABBAGE2ND::DISPLAY;
  29 using BABBAGE2ND::KEYBOARD;
  30
  31 // ----------------------------------------------------------------------------
  32 // initialize
  33 // ----------------------------------------------------------------------------
  34
  35 VM::VM(EMU* parent_emu) : VM_TEMPLATE(parent_emu)
  36 {
  37         // create devices
  38         first_device = last_device = NULL;
  39         dummy = new DEVICE(this, emu);  // must be 1st device
  40         event = new EVENT(this, emu);   // must be 2nd device
  41
  42         io = new IO(this, emu);
  43         memory = new MEMORY(this, emu);
  44         cpu = new Z80(this, emu);
  45         ctc = new Z80CTC(this, emu);
  46         pio1 = new Z80PIO(this, emu);
  47         pio1->set_device_name(_T("Z80 PIO (LEDs)"));
  48         pio2 = new Z80PIO(this, emu);
  49         pio2->set_device_name(_T("Z80 PIO (7-Seg/Keyboard)"));
  50
  51         display = new DISPLAY(this, emu);
  52         keyboard = new KEYBOARD(this, emu);
  53
  54         // Set names
  55 #if defined(_USE_QT)
  56         dummy->set_device_name(_T("1st Dummy"));
  57         pio1->set_device_name(_T("Z80 PIO(LEDs)"));
  58         pio2->set_device_name(_T("Z80 PIO(7SEG/KEYBOARD)"));
  59 #endif
  60         // set contexts
  61         event->set_context_cpu(cpu);
  62
  63         pio2->set_context_port_b(display, SIG_DISPLAY_7SEG_LED, 0xff, 0);
  64         keyboard->set_context_pio(pio2);
  65         // p.145, fig.3-4
  66         ctc->set_context_zc2(ctc, SIG_Z80CTC_TRIG_1, 1);
  67         ctc->set_context_zc1(ctc, SIG_Z80CTC_TRIG_0, 1);
  68         // p.114, fig.2-52
  69         pio1->set_context_port_b(display, SIG_DISPLAY_8BIT_LED, 0xff, 0);
  70         //pio1->set_context_port_b(pio1, SIG_Z80PIO_PORT_A, 0xff, 0);
  71
  72         // cpu bus
  73         cpu->set_context_mem(memory);
  74         cpu->set_context_io(io);
  75         cpu->set_context_intr(ctc);
  76 #ifdef USE_DEBUGGER
  77         cpu->set_context_debugger(new DEBUGGER(this, emu));
  78 #endif
  79
  80         // z80 family daisy chain
  81         ctc->set_context_intr(cpu, 0);
  82         ctc->set_context_child(pio1);
  83         pio1->set_context_intr(cpu, 1);
  84         pio1->set_context_child(pio2);
  85         pio2->set_context_intr(cpu, 2);
  86
  87         // memory bus
  88         memset(ram, 0, sizeof(ram));
  89         memset(rom, 0xff, sizeof(rom));
  90
  91         memory->read_bios(_T("MON.ROM"), rom, sizeof(rom));
  92
  93         memory->set_memory_r(0x0000, 0x07ff, rom);
  94         memory->set_memory_rw(0x1000, 0x17ff, ram);
  95
  96         // i/o bus
  97         io->set_iomap_range_rw(0x00, 0x03, ctc);
  98         io->set_iomap_range_rw(0x10, 0x13, pio1);
  99         io->set_iomap_range_rw(0x20, 0x23, pio2);
 100
 101         // initialize all devices
 102 #if defined(__GIT_REPO_VERSION)
 103         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
 104 #endif
 105         for(DEVICE* device = first_device; device; device = device->next_device) {
 106                 device->initialize();
 107         }
 108 }
 109
 110 VM::~VM()
 111 {
 112         // delete all devices
 113         for(DEVICE* device = first_device; device;) {
 114                 DEVICE *next_device = device->next_device;
 115                 device->release();
 116                 delete device;
 117                 device = next_device;
 118         }
 119 }
 120
 121 DEVICE* VM::get_device(int id)
 122 {
 123         for(DEVICE* device = first_device; device; device = device->next_device) {
 124                 if(device->this_device_id == id) {
 125                         return device;
 126                 }
 127         }
 128         return NULL;
 129 }
 130
 131 // ----------------------------------------------------------------------------
 132 // drive virtual machine
 133 // ----------------------------------------------------------------------------
 134
 135 void VM::reset()
 136 {
 137         // reset all devices
 138         for(DEVICE* device = first_device; device; device = device->next_device) {
 139                 device->reset();
 140         }
 141 }
 142
 143 void VM::run()
 144 {
 145         event->drive();
 146 }
 147
 148 // ----------------------------------------------------------------------------
 149 // debugger
 150 // ----------------------------------------------------------------------------
 151
 152 #ifdef USE_DEBUGGER
 153 DEVICE *VM::get_cpu(int index)
 154 {
 155         if(index == 0) {
 156                 return cpu;
 157         }
 158         return NULL;
 159 }
 160 #endif
 161
 162 // ----------------------------------------------------------------------------
 163 // draw screen
 164 // ----------------------------------------------------------------------------
 165
 166 void VM::draw_screen()
 167 {
 168         display->draw_screen();
 169 }
 170
 171 // ----------------------------------------------------------------------------
 172 // soud manager
 173 // ----------------------------------------------------------------------------
 174
 175 void VM::initialize_sound(int rate, int samples)
 176 {
 177         // init sound manager
 178         event->initialize_sound(rate, samples);
 179 }
 180
 181 uint16_t* VM::create_sound(int* extra_frames)
 182 {
 183         return event->create_sound(extra_frames);
 184 }
 185
 186 int VM::get_sound_buffer_ptr()
 187 {
 188         return event->get_sound_buffer_ptr();
 189 }
 190
 191 // ----------------------------------------------------------------------------
 192 // notify key
 193 // ----------------------------------------------------------------------------
 194
 195 void VM::key_down(int code, bool repeat)
 196 {
 197         keyboard->key_down(code);
 198 }
 199
 200 void VM::key_up(int code)
 201 {
 202         //keyboard->key_up(code);
 203 }
 204
 205 // ----------------------------------------------------------------------------
 206 // user interface
 207 // ----------------------------------------------------------------------------
 208
 209 void VM::load_binary(int drv, const _TCHAR* file_path)
 210 {
 211         if(drv == 0) {
 212                 memory->read_image(file_path, ram, sizeof(ram));
 213         }
 214 }
 215
 216 void VM::save_binary(int drv, const _TCHAR* file_path)
 217 {
 218         if(drv == 0) {
 219                 memory->write_image(file_path, ram, sizeof(ram));
 220         }
 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 bool VM::process_state(FILEIO* state_fio, bool loading)
 238 {
 239         if(!state_fio->StateCheckUint32(STATE_VERSION)) {
 240                 return false;
 241         }
 242         for(DEVICE* device = first_device; device; device = device->next_device) {
 243                 // Note: typeid(foo).name is fixed by recent ABI.Not dec 6.
 244                 // const char *name = typeid(*device).name();
 245                 //       But, using get_device_name() instead of typeid(foo).name() 20181008 K.O
 246                 const char *name = device->get_device_name();
 247                 int len = strlen(name);
 248
 249                 if(!state_fio->StateCheckInt32(len)) {
 250                         if(loading) {
 251                                 printf("Class name len Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 252                         }
 253                         return false;
 254                 }
 255                 if(!state_fio->StateCheckBuffer(name, len, 1)) {
 256                         if(loading) {
 257                                 printf("Class name Error: DEVID=%d EXPECT=%s\n", device->this_device_id, name);
 258                         }
 259                         return false;
 260                 }
 261                 if(!device->process_state(state_fio, loading)) {
 262                         if(loading) {
 263                                 printf("Data loading Error: DEVID=%d\n", device->this_device_id);
 264                         }
 265                         return false;
 266                 }
 267         }
 268         // Machine specified.
 269         state_fio->StateBuffer(ram, sizeof(ram), 1);
 270         if(loading) {
 271                 update_config();
 272         }
 273         return true;
 274 }