source/src/vm/ys6464a/ys6464a.cpp

   1 /*
   2         SHINKO SANGYO YS-6464A Emulator 'eYS-6464A'
   3
   4         Author : Takeda.Toshiya
   5         Date   : 2009.12.30 -
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "ys6464a.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 #include "../io.h"
  16 #include "../i8255.h"
  17 #include "../memory.h"
  18 #include "../pcm1bit.h"
  19 #include "../z80.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         dummy->set_device_name(_T("1st Dummy"));
  39         io = new IO(this, emu);
  40         pio = new I8255(this, emu);
  41         memory = new MEMORY(this, emu);
  42 //      pcm = new PCM1BIT(this, emu);
  43         cpu = new Z80(this, emu);
  44
  45         display = new DISPLAY(this, emu);
  46         keyboard = new KEYBOARD(this, emu);
  47
  48         // set contexts
  49         event->set_context_cpu(cpu);
  50 //      event->set_context_sound(pcm);
  51
  52 //      pio->set_context_port_b(pcm, SIG_PCM1BIT_SIGNAL, 0x01, 0);
  53         pio->set_context_port_b(display, SIG_DISPLAY_PORT_B, 0xf0, 0);
  54         pio->set_context_port_c(display, SIG_DISPLAY_PORT_C, 0xf0, 0);
  55         pio->set_context_port_c(keyboard, SIG_KEYBOARD_PORT_C, 0xf0, 0);
  56         keyboard->set_context_pio(pio);
  57
  58         // cpu bus
  59         cpu->set_context_mem(memory);
  60         cpu->set_context_io(io);
  61         cpu->set_context_intr(dummy);
  62 #ifdef USE_DEBUGGER
  63         cpu->set_context_debugger(new DEBUGGER(this, emu));
  64 #endif
  65
  66         // memory bus
  67         memset(ram, 0, sizeof(ram));
  68         memset(rom, 0xff, sizeof(rom));
  69
  70         memory->read_bios(_T("MON.ROM"), rom, sizeof(rom));
  71
  72         memory->set_memory_r(0x0000, 0x1fff, rom);
  73         memory->set_memory_r(0x2000, 0x3fff, rom);
  74         memory->set_memory_r(0x4000, 0x5fff, rom);
  75         memory->set_memory_r(0x6000, 0x7fff, rom);
  76         memory->set_memory_rw(0x8000, 0x9fff, ram);
  77         memory->set_memory_rw(0xa000, 0xbfff, ram);
  78         memory->set_memory_rw(0xc000, 0xdfff, ram);
  79         memory->set_memory_rw(0xe000, 0xffff, ram);
  80
  81         // i/o bus
  82         io->set_iomap_range_w(0xf8, 0xfb, pio);
  83         io->set_iomap_range_r(0xf8, 0xfb, pio);
  84
  85         // initialize all devices
  86 #if defined(__GIT_REPO_VERSION)
  87         strncpy(_git_revision, __GIT_REPO_VERSION, sizeof(_git_revision) - 1);
  88 #endif
  89         for(DEVICE* device = first_device; device; device = device->next_device) {
  90                 device->initialize();
  91         }
  92         decl_state();
  93 }
  94
  95 VM::~VM()
  96 {
  97         // delete all devices
  98         for(DEVICE* device = first_device; device;) {
  99                 DEVICE *next_device = device->next_device;
 100                 device->release();
 101                 delete device;
 102                 device = next_device;
 103         }
 104 }
 105
 106 DEVICE* VM::get_device(int id)
 107 {
 108         for(DEVICE* device = first_device; device; device = device->next_device) {
 109                 if(device->this_device_id == id) {
 110                         return device;
 111                 }
 112         }
 113         return NULL;
 114 }
 115
 116 // ----------------------------------------------------------------------------
 117 // drive virtual machine
 118 // ----------------------------------------------------------------------------
 119
 120 void VM::reset()
 121 {
 122         // reset all devices
 123         for(DEVICE* device = first_device; device; device = device->next_device) {
 124                 device->reset();
 125         }
 126 }
 127
 128 void VM::run()
 129 {
 130         event->drive();
 131 }
 132
 133 // ----------------------------------------------------------------------------
 134 // debugger
 135 // ----------------------------------------------------------------------------
 136
 137 #ifdef USE_DEBUGGER
 138 DEVICE *VM::get_cpu(int index)
 139 {
 140         if(index == 0) {
 141                 return cpu;
 142         }
 143         return NULL;
 144 }
 145 #endif
 146
 147 // ----------------------------------------------------------------------------
 148 // draw screen
 149 // ----------------------------------------------------------------------------
 150
 151 void VM::draw_screen()
 152 {
 153         display->draw_screen();
 154 }
 155
 156 // ----------------------------------------------------------------------------
 157 // soud manager
 158 // ----------------------------------------------------------------------------
 159
 160 void VM::initialize_sound(int rate, int samples)
 161 {
 162         // init sound manager
 163         event->initialize_sound(rate, samples);
 164
 165         // init sound gen
 166 //      pcm->initialize_sound(rate, 8000);
 167 }
 168
 169 uint16_t* VM::create_sound(int* extra_frames)
 170 {
 171         return event->create_sound(extra_frames);
 172 }
 173
 174 int VM::get_sound_buffer_ptr()
 175 {
 176         return event->get_sound_buffer_ptr();
 177 }
 178
 179 // ----------------------------------------------------------------------------
 180 // user interface
 181 // ----------------------------------------------------------------------------
 182
 183 void VM::load_binary(int drv, const _TCHAR* file_path)
 184 {
 185         if(drv == 0) {
 186                 memory->read_image(file_path, ram, sizeof(ram));
 187         }
 188 }
 189
 190 void VM::save_binary(int drv, const _TCHAR* file_path)
 191 {
 192         if(drv == 0) {
 193                 memory->write_image(file_path, ram, sizeof(ram));
 194         }
 195 }
 196
 197 bool VM::is_frame_skippable()
 198 {
 199         return event->is_frame_skippable();
 200 }
 201
 202 void VM::update_config()
 203 {
 204         for(DEVICE* device = first_device; device; device = device->next_device) {
 205                 device->update_config();
 206         }
 207 }
 208
 209 #define STATE_VERSION   2
 210
 211 #include "../../statesub.h"
 212 #include "../../qt/gui/csp_logger.h"
 213 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 214
 215 void VM::decl_state(void)
 216 {
 217
 218         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::YS_6464A_HEAD")), csp_logger);
 219         DECL_STATE_ENTRY_1D_ARRAY(ram, sizeof(ram));
 220         for(DEVICE* device = first_device; device; device = device->next_device) {
 221                 device->decl_state();
 222         }
 223 }
 224
 225 void VM::save_state(FILEIO* state_fio)
 226 {
 227         //state_fio->FputUint32(STATE_VERSION);
 228
 229         if(state_entry != NULL) {
 230                 state_entry->save_state(state_fio);
 231         }
 232         for(DEVICE* device = first_device; device; device = device->next_device) {
 233                 device->save_state(state_fio);
 234         }
 235         //state_fio->Fwrite(ram, sizeof(ram), 1);
 236 }
 237
 238 bool VM::load_state(FILEIO* state_fio)
 239 {
 240         //if(state_fio->FgetUint32() != STATE_VERSION) {
 241         //      return false;
 242         //}
 243         bool mb = false;
 244         if(state_entry != NULL) {
 245                 mb = state_entry->load_state(state_fio);
 246         }
 247         if(!mb) {
 248                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 249                 return false;
 250         }
 251         for(DEVICE* device = first_device; device; device = device->next_device) {
 252                 if(!device->load_state(state_fio)) {
 253                         return false;
 254                 }
 255         }
 256         //state_fio->Fread(ram, sizeof(ram), 1);
 257         return true;
 258 }
 259