source/src/vm/gamegear/mastersystem.cpp

   1 /*
   2         SEGA MASTER SYSTEM Emulator 'yaMASTER SYSTEM'
   3
   4         Author : tanam
   5         Date   : 2013.10.20-
   6
   7         [ virtual machine ]
   8 */
   9
  10 #include "mastersystem.h"
  11 #include "../../emu.h"
  12 #include "../device.h"
  13 #include "../event.h"
  14
  15 ///#include "../datarec.h"
  16 ///#include "../disk.h"
  17 ///#include "../i8251.h"
  18 #include "../i8255.h"
  19 #include "../io.h"
  20 #include "../ym2413.h"
  21 #include "../sn76489an.h"
  22 #include "../315-5124.h"
  23 ///#include "../upd765a.h"
  24 #include "../z80.h"
  25
  26 #ifdef USE_DEBUGGER
  27 #include "../debugger.h"
  28 #endif
  29
  30 #include "keyboard.h"
  31 #include "memory.h"
  32 #include "system.h"
  33
  34 // ----------------------------------------------------------------------------
  35 // initialize
  36 // ----------------------------------------------------------------------------
  37
  38 VM::VM(EMU* parent_emu) : emu(parent_emu)
  39 {
  40         // create devices
  41         first_device = last_device = NULL;
  42         dummy = new DEVICE(this, emu);  // must be 1st device
  43         event = new EVENT(this, emu);   // must be 2nd device
  44
  45 #if defined(_USE_QT)
  46         dummy->set_device_name(_T("1st Dummy"));
  47         event->set_device_name(_T("EVENT"));
  48 #endif
  49 ///     drec = new DATAREC(this, emu);
  50 ///     sio = new I8251(this, emu);
  51         pio_k = new I8255(this, emu);
  52         pio_f = new I8255(this, emu);
  53         io = new IO(this, emu);
  54         psg = new SN76489AN(this, emu);
  55         fm = new YM2413(this, emu);
  56         vdp = new _315_5124(this, emu);
  57 ///     fdc = new UPD765A(this, emu);
  58         cpu = new Z80(this, emu);
  59 #if defined(_USE_QT)
  60         pio_k->set_device_name(_T("i8255(SG KEYBOARD)"));
  61         pio_f->set_device_name(_T("i8255(SG FDD)"));
  62         io->set_device_name(_T("I/O BUS"));
  63         psg->set_device_name(_T("SN76489AN PSG"));
  64         fm->set_device_name(_T("YM2413 OPL"));
  65         vdp->set_device_name(_T("SEGA 315-5124 VDP"));
  66         cpu->set_device_name(_T("CPU(Z80)"));
  67 #endif
  68
  69         key = new KEYBOARD(this, emu);
  70         memory = new MEMORY(this, emu);
  71         system = new SYSTEM(this, emu);
  72 #if defined(_USE_QT)
  73         key->set_device_name(_T("KEYBOARD"));
  74         memory->set_device_name(_T("MEMORY"));
  75         system->set_device_name(_T("SYSTEM"));
  76 #endif
  77
  78         // set contexts
  79         event->set_context_cpu(cpu);
  80         event->set_context_sound(psg);
  81         event->set_context_sound(fm);
  82
  83 ///     drec->set_context_ear(pio_k, SIG_I8255_PORT_B, 0x80);
  84         pio_k->set_context_port_c(key, SIG_KEYBOARD_COLUMN, 0x07, 0);
  85 ///     pio_k->set_context_port_c(drec, SIG_DATAREC_REMOTE, 0x08, 0);
  86 ///     pio_k->set_context_port_c(drec, SIG_DATAREC_MIC, 0x10, 0);
  87 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_MOTOR_NEG, 2, 0);
  88 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_TC, 4, 0);
  89 ///     pio_f->set_context_port_c(fdc, SIG_UPD765A_RESET, 8, 0);
  90         pio_f->set_context_port_c(memory, SIG_MEMORY_SEL, 0x40, 0);
  91         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
  92 ///     fdc->set_context_irq(pio_f, SIG_I8255_PORT_A, 1);
  93 ///     fdc->set_context_index(pio_f, SIG_I8255_PORT_A, 4);
  94
  95         key->set_context_cpu(cpu);
  96         key->set_context_pio(pio_k);
  97         system->set_context_key(key);
  98         vdp->set_context_key(key);
  99         vdp->set_context_psg(psg);
 100 ///     vdp->set_context_cpu(cpu);
 101
 102         // cpu bus
 103         cpu->set_context_mem(memory);
 104         cpu->set_context_io(io);
 105         cpu->set_context_intr(system);
 106 #ifdef USE_DEBUGGER
 107         cpu->set_context_debugger(new DEBUGGER(this, emu));
 108 #endif
 109
 110         // i/o bus
 111         io->set_iomap_single_r(0x00, system);           // GG  START
 112         io->set_iomap_single_w(0x80, system);           // COL TENKEY
 113         io->set_iomap_single_w(0xc0, system);           // COL JOYPAD
 114         io->set_iomap_range_rw(0xfc, 0xfe, system);     // COL JOYPAD
 115         io->set_iomap_range_rw(0xff, 0xff, psg);        // COL PSG
 116         io->set_iomap_range_rw(0x7e, 0x7f, vdp);        // SG  VDP
 117         io->set_iomap_range_rw(0xbe, 0xbf, vdp);        // SG  VDP
 118         io->set_iomap_range_rw(0xdc, 0xdf, pio_k);      // SG  KEY
 119 ///     io->set_iomap_range_rw(0xe0, 0xe3, fdc);        // SG  FDD
 120 ///     io->set_iomap_range_rw(0xe4, 0xe7, pio_f);      // SG  FDD
 121 ///     io->set_iomap_range_rw(0xe8, 0xe9, sio);        // SG  SERIAL
 122         io->set_iomap_range_rw(0xf0, 0xf2, fm);         // MS  FM
 123
 124         // initialize all devices
 125         for(DEVICE* device = first_device; device; device = device->next_device) {
 126                 device->initialize();
 127         }
 128
 129         // BIOS
 130 ///     memory->bios();
 131         memory->open_cart(create_local_path(_T("SMS.ROM")));
 132 ///     for(int i = 0; i < 4; i++) {
 133 ///             fdc->set_drive_type(i, DRIVE_TYPE_2D);
 134 ///     }
 135 }
 136
 137 VM::~VM()
 138 {
 139         // delete all devices
 140         for(DEVICE* device = first_device; device;) {
 141                 DEVICE *next_device = device->next_device;
 142                 device->release();
 143                 delete device;
 144                 device = next_device;
 145         }
 146 }
 147
 148 DEVICE* VM::get_device(int id)
 149 {
 150         for(DEVICE* device = first_device; device; device = device->next_device) {
 151                 if(device->this_device_id == id) {
 152                         return device;
 153                 }
 154         }
 155         return NULL;
 156 }
 157
 158 // ----------------------------------------------------------------------------
 159 // drive virtual machine
 160 // ----------------------------------------------------------------------------
 161
 162 void VM::reset()
 163 {
 164         // reset all devices
 165         for(DEVICE* device = first_device; device; device = device->next_device) {
 166                 device->reset();
 167         }
 168 }
 169
 170 void VM::run()
 171 {
 172         event->drive();
 173 }
 174
 175 // ----------------------------------------------------------------------------
 176 // debugger
 177 // ----------------------------------------------------------------------------
 178
 179 #ifdef USE_DEBUGGER
 180 DEVICE *VM::get_cpu(int index)
 181 {
 182         if(index == 0) {
 183                 return cpu;
 184         }
 185         return NULL;
 186 }
 187 #endif
 188
 189 // ----------------------------------------------------------------------------
 190 // draw screen
 191 // ----------------------------------------------------------------------------
 192
 193 void VM::draw_screen()
 194 {
 195         vdp->draw_screen();
 196 }
 197
 198 ///uint32_t VM::get_access_lamp_status()
 199 ///{
 200 ///     uint32_t status = fdc->read_signal(0);
 201 ///     return (status & (1 | 4)) ? 1 : (status & (2 | 8)) ? 2 : 0;
 202 ///}
 203
 204 // ----------------------------------------------------------------------------
 205 // soud manager
 206 // ----------------------------------------------------------------------------
 207
 208 void VM::initialize_sound(int rate, int samples)
 209 {
 210         // init sound manager
 211         event->initialize_sound(rate, samples);
 212
 213         // init sound gen
 214         psg->initialize_sound(rate, 3579545, 4000);
 215         fm->initialize_sound(rate, 3579545, samples);
 216 }
 217
 218 uint16_t* VM::create_sound(int* extra_frames)
 219 {
 220         return event->create_sound(extra_frames);
 221 }
 222
 223 int VM::get_sound_buffer_ptr()
 224 {
 225         return event->get_sound_buffer_ptr();
 226 }
 227
 228 #ifdef USE_SOUND_VOLUME
 229 void VM::set_sound_device_volume(int ch, int decibel_l, int decibel_r)
 230 {
 231         if(ch == 0) {
 232                 psg->set_volume(0, decibel_l, decibel_r);
 233         } else if(ch == 1) {
 234                 fm->set_volume(0, decibel_l, decibel_r);
 235         }
 236 }
 237 #endif
 238
 239 // ----------------------------------------------------------------------------
 240 // user interface
 241 // ----------------------------------------------------------------------------
 242
 243 void VM::open_cart(int drv, const _TCHAR* file_path)
 244 {
 245         if(drv == 0) {
 246                 memory->open_cart(file_path);
 247                 if (check_file_extension(file_path, _T(".col"))) {
 248                         vdp->set_context_irq(cpu, SIG_CPU_NMI, 1);
 249                         vdp->set_console(0x00);
 250                         memory->bios();
 251                 } else {
 252                         vdp->set_context_irq(cpu, SIG_CPU_IRQ, 1);
 253                         if (check_file_extension(file_path, _T(".gg"))) {
 254                                 vdp->set_console(0x40);
 255                         } else {
 256                                 vdp->set_console(0x20);
 257                         }
 258                 }
 259                 reset();
 260         }
 261 }
 262
 263 void VM::close_cart(int drv)
 264 {
 265         if(drv == 0) {
 266                 memory->close_cart();
 267                 reset();
 268         }
 269 }
 270
 271 bool VM::is_cart_inserted(int drv)
 272 {
 273         if(drv == 0) {
 274                 return memory->is_cart_inserted();
 275         } else {
 276                 return false;
 277         }
 278 }
 279
 280 ///void VM::open_floppy_disk(int drv, const _TCHAR* file_path, int bank)
 281 ///{
 282 ///     fdc->open_disk(drv, file_path, bank);
 283 ///}
 284
 285 ///void VM::close_floppy_disk(int drv)
 286 ///{
 287 ///     fdc->close_disk(drv);
 288 ///}
 289
 290 ///bool VM::is_floppy_disk_inserted(int drv)
 291 ///{
 292 ///     return fdc->is_disk_inserted(drv);
 293 ///}
 294
 295 ///void VM::is_floppy_disk_protected(int drv, bool value)
 296 ///{
 297 ///     fdc->is_disk_protected(drv, value);
 298 ///}
 299
 300 ///bool VM::is_floppy_disk_protected(int drv)
 301 ///{
 302 ///     return fdc->is_disk_protected(drv);
 303 ///}
 304
 305 ///void VM::play_tape(const _TCHAR* file_path)
 306 ///{
 307 ///     drec->play_tape(file_path);
 308 ///}
 309
 310 ///void VM::rec_tape(const _TCHAR* file_path)
 311 ///{
 312 ///     drec->rec_tape(file_path);
 313 ///}
 314
 315 ///void VM::close_tape()
 316 ///{
 317 ///     emu->lock_vm();
 318 ///     drec->close_tape();
 319 ///     emu->unlock_vm();
 320 ///}
 321
 322 ///bool VM::is_tape_inserted()
 323 ///{
 324 ///     return drec->is_tape_inserted();
 325 ///}
 326
 327 ///bool VM::is_tape_playing()
 328 ///{
 329 ///     return drec->is_tape_playing();
 330 ///}
 331
 332 ///bool VM::is_tape_recording()
 333 ///{
 334 ///     return drec->is_tape_recording();
 335 ///}
 336
 337 ///int VM::get_tape_position()
 338 ///{
 339 ///     return drec->get_tape_position();
 340 ///}
 341
 342 bool VM::is_frame_skippable()
 343 {
 344         return event->is_frame_skippable();
 345 }
 346
 347 void VM::update_config()
 348 {
 349         for(DEVICE* device = first_device; device; device = device->next_device) {
 350                 device->update_config();
 351         }
 352 }