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         for(DEVICE* device = first_device; device; device = device->next_device) {
  87                 device->initialize();
  88         }
  89         decl_state();
  90 }
  91
  92 VM::~VM()
  93 {
  94         // delete all devices
  95         for(DEVICE* device = first_device; device;) {
  96                 DEVICE *next_device = device->next_device;
  97                 device->release();
  98                 delete device;
  99                 device = next_device;
 100         }
 101 }
 102
 103 DEVICE* VM::get_device(int id)
 104 {
 105         for(DEVICE* device = first_device; device; device = device->next_device) {
 106                 if(device->this_device_id == id) {
 107                         return device;
 108                 }
 109         }
 110         return NULL;
 111 }
 112
 113 // ----------------------------------------------------------------------------
 114 // drive virtual machine
 115 // ----------------------------------------------------------------------------
 116
 117 void VM::reset()
 118 {
 119         // reset all devices
 120         for(DEVICE* device = first_device; device; device = device->next_device) {
 121                 device->reset();
 122         }
 123 }
 124
 125 void VM::run()
 126 {
 127         event->drive();
 128 }
 129
 130 // ----------------------------------------------------------------------------
 131 // debugger
 132 // ----------------------------------------------------------------------------
 133
 134 #ifdef USE_DEBUGGER
 135 DEVICE *VM::get_cpu(int index)
 136 {
 137         if(index == 0) {
 138                 return cpu;
 139         }
 140         return NULL;
 141 }
 142 #endif
 143
 144 // ----------------------------------------------------------------------------
 145 // draw screen
 146 // ----------------------------------------------------------------------------
 147
 148 void VM::draw_screen()
 149 {
 150         display->draw_screen();
 151 }
 152
 153 // ----------------------------------------------------------------------------
 154 // soud manager
 155 // ----------------------------------------------------------------------------
 156
 157 void VM::initialize_sound(int rate, int samples)
 158 {
 159         // init sound manager
 160         event->initialize_sound(rate, samples);
 161
 162         // init sound gen
 163 //      pcm->initialize_sound(rate, 8000);
 164 }
 165
 166 uint16_t* VM::create_sound(int* extra_frames)
 167 {
 168         return event->create_sound(extra_frames);
 169 }
 170
 171 int VM::get_sound_buffer_ptr()
 172 {
 173         return event->get_sound_buffer_ptr();
 174 }
 175
 176 // ----------------------------------------------------------------------------
 177 // user interface
 178 // ----------------------------------------------------------------------------
 179
 180 void VM::load_binary(int drv, const _TCHAR* file_path)
 181 {
 182         if(drv == 0) {
 183                 memory->read_image(file_path, ram, sizeof(ram));
 184         }
 185 }
 186
 187 void VM::save_binary(int drv, const _TCHAR* file_path)
 188 {
 189         if(drv == 0) {
 190                 memory->write_image(file_path, ram, sizeof(ram));
 191         }
 192 }
 193
 194 bool VM::is_frame_skippable()
 195 {
 196         return event->is_frame_skippable();
 197 }
 198
 199 void VM::update_config()
 200 {
 201         for(DEVICE* device = first_device; device; device = device->next_device) {
 202                 device->update_config();
 203         }
 204 }
 205
 206 #define STATE_VERSION   2
 207
 208 #include "../../statesub.h"
 209 #include "../../qt/gui/csp_logger.h"
 210 extern CSP_Logger DLL_PREFIX_I *csp_logger;
 211
 212 void VM::decl_state(void)
 213 {
 214
 215         state_entry = new csp_state_utils(STATE_VERSION, 0, (_TCHAR *)(_T("CSP::YS_6464A_HEAD")), csp_logger);
 216         DECL_STATE_ENTRY_1D_ARRAY(ram, sizeof(ram));
 217         for(DEVICE* device = first_device; device; device = device->next_device) {
 218                 device->decl_state();
 219         }
 220 }
 221
 222 void VM::save_state(FILEIO* state_fio)
 223 {
 224         //state_fio->FputUint32(STATE_VERSION);
 225
 226         if(state_entry != NULL) {
 227                 state_entry->save_state(state_fio);
 228         }
 229         for(DEVICE* device = first_device; device; device = device->next_device) {
 230                 device->save_state(state_fio);
 231         }
 232         //state_fio->Fwrite(ram, sizeof(ram), 1);
 233 }
 234
 235 bool VM::load_state(FILEIO* state_fio)
 236 {
 237         //if(state_fio->FgetUint32() != STATE_VERSION) {
 238         //      return false;
 239         //}
 240         bool mb = false;
 241         if(state_entry != NULL) {
 242                 mb = state_entry->load_state(state_fio);
 243         }
 244         if(!mb) {
 245                 emu->out_debug_log("INFO: HEADER DATA ERROR");
 246                 return false;
 247         }
 248         for(DEVICE* device = first_device; device; device = device->next_device) {
 249                 if(!device->load_state(state_fio)) {
 250                         return false;
 251                 }
 252         }
 253         //state_fio->Fread(ram, sizeof(ram), 1);
 254         return true;
 255 }
 256