gp2x/emu.c

   1 // (c) Copyright 2006-2007 notaz, All rights reserved.\r
   2 // Free for non-commercial use.\r
   3 \r
   4 // For commercial use, separate licencing terms must be obtained.\r
   5 \r
   6 #include <stdio.h>\r
   7 #include <stdlib.h>\r
   8 #include <sys/time.h>\r
   9 #include <sys/stat.h>\r
  10 #include <sys/types.h>\r
  11 #include <linux/limits.h>\r
  12 #include <ctype.h>\r
  13 #include <unistd.h>\r
  14 \r
  15 #include <stdarg.h>\r
  16 \r
  17 #include "emu.h"\r
  18 #include "gp2x.h"\r
  19 #include "usbjoy.h"\r
  20 #include "menu.h"\r
  21 #include "../common/arm_utils.h"\r
  22 #include "../common/fonts.h"\r
  23 #include "../common/emu.h"\r
  24 #include "../common/config.h"\r
  25 #include "cpuctrl.h"\r
  26 \r
  27 #include <Pico/PicoInt.h>\r
  28 #include <Pico/Patch.h>\r
  29 #include <Pico/sound/mix.h>\r
  30 #include <zlib/zlib.h>\r
  31 \r
  32 //#define PFRAMES\r
  33 \r
  34 #ifdef BENCHMARK\r
  35 #define OSD_FPS_X 220\r
  36 #else\r
  37 #define OSD_FPS_X 260\r
  38 #endif\r
  39 \r
  40 \r
  41 int engineState;\r
  42 int select_exits = 0;\r
  43 \r
  44 char romFileName[PATH_MAX];\r
  45 \r
  46 extern int crashed_940;\r
  47 \r
  48 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  49 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  50 static int osd_fps_x;\r
  51 static int gp2x_old_gamma = 100;\r
  52 char noticeMsg[64];                     // notice msg to draw\r
  53 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  54 int reset_timing = 0;\r
  55 \r
  56 static int pico_pen_x = 0, pico_pen_y = 0, pico_inp_mode = 0;\r
  57 \r
  58 static void emu_msg_cb(const char *msg);\r
  59 static void emu_msg_tray_open(void);\r
  60 \r
  61 \r
  62 void emu_noticeMsgUpdated(void)\r
  63 {\r
  64         gettimeofday(&noticeMsgTime, 0);\r
  65 }\r
  66 \r
  67 void emu_getMainDir(char *dst, int len)\r
  68 {\r
  69         extern char **g_argv;\r
  70         int j;\r
  71 \r
  72         strncpy(dst, g_argv[0], len);\r
  73         len -= 32; // reserve\r
  74         if (len < 0) len = 0;\r
  75         dst[len] = 0;\r
  76         for (j = strlen(dst); j > 0; j--)\r
  77                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  78 }\r
  79 \r
  80 void emu_Init(void)\r
  81 {\r
  82         // make temp buffer for alt renderer\r
  83         PicoDraw2FB = malloc((8+320)*(8+240+8));\r
  84         if (!PicoDraw2FB)\r
  85         {\r
  86                 printf("PicoDraw2FB == 0\n");\r
  87         }\r
  88 \r
  89         // make dirs for saves, cfgs, etc.\r
  90         mkdir("mds", 0777);\r
  91         mkdir("srm", 0777);\r
  92         mkdir("brm", 0777);\r
  93         mkdir("cfg", 0777);\r
  94 \r
  95         PicoInit();\r
  96         PicoMessage = emu_msg_cb;\r
  97         PicoMCDopenTray = emu_msg_tray_open;\r
  98         PicoMCDcloseTray = menu_loop_tray;\r
  99 }\r
 100 \r
 101 \r
 102 static void scaling_update(void)\r
 103 {\r
 104         PicoOpt &= ~0x4100;\r
 105         switch (currentConfig.scaling) {\r
 106                 default: break; // off\r
 107                 case 1:  // hw hor\r
 108                 case 2:  PicoOpt |=  0x0100; break; // hw hor+vert\r
 109                 case 3:  PicoOpt |=  0x4000; break; // sw hor\r
 110         }\r
 111 }\r
 112 \r
 113 \r
 114 void emu_Deinit(void)\r
 115 {\r
 116         // save SRAM\r
 117         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 118                 emu_SaveLoadGame(0, 1);\r
 119                 SRam.changed = 0;\r
 120         }\r
 121 \r
 122         if (!(currentConfig.EmuOpt & 0x20)) {\r
 123                 config_writelrom(PicoConfigFile);\r
 124 #ifndef NO_SYNC\r
 125                 sync();\r
 126 #endif\r
 127         }\r
 128 \r
 129         free(PicoDraw2FB);\r
 130 \r
 131         PicoExit();\r
 132 \r
 133         // restore gamma\r
 134         if (gp2x_old_gamma != 100)\r
 135                 set_gamma(100, 0);\r
 136 }\r
 137 \r
 138 void emu_prepareDefaultConfig(void)\r
 139 {\r
 140         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 141         defaultConfig.EmuOpt    = 0x1d | 0x00700; // | <- ram_tmng, confirm_save, cd_leds\r
 142         defaultConfig.s_PicoOpt = 0x0f | 0x20e00; // | <- use_940, cd_pcm, cd_cdda, svp drc\r
 143         defaultConfig.s_PsndRate = 44100;\r
 144         defaultConfig.s_PicoRegion = 0; // auto\r
 145         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 146         defaultConfig.s_PicoCDBuffers = 0;\r
 147         defaultConfig.Frameskip = -1; // auto\r
 148         defaultConfig.CPUclock = 200;\r
 149         defaultConfig.volume = 50;\r
 150         defaultConfig.KeyBinds[ 0] = 1<<0; // SACB RLDU\r
 151         defaultConfig.KeyBinds[ 4] = 1<<1;\r
 152         defaultConfig.KeyBinds[ 2] = 1<<2;\r
 153         defaultConfig.KeyBinds[ 6] = 1<<3;\r
 154         defaultConfig.KeyBinds[14] = 1<<4;\r
 155         defaultConfig.KeyBinds[13] = 1<<5;\r
 156         defaultConfig.KeyBinds[12] = 1<<6;\r
 157         defaultConfig.KeyBinds[ 8] = 1<<7;\r
 158         defaultConfig.KeyBinds[15] = 1<<26; // switch rend\r
 159         defaultConfig.KeyBinds[10] = 1<<27; // save state\r
 160         defaultConfig.KeyBinds[11] = 1<<28; // load state\r
 161         defaultConfig.KeyBinds[23] = 1<<29; // vol up\r
 162         defaultConfig.KeyBinds[22] = 1<<30; // vol down\r
 163         defaultConfig.gamma = 100;\r
 164         defaultConfig.scaling = 0;\r
 165 }\r
 166 \r
 167 void emu_setDefaultConfig(void)\r
 168 {\r
 169         memcpy(&currentConfig, &defaultConfig, sizeof(currentConfig));\r
 170         PicoOpt = currentConfig.s_PicoOpt;\r
 171         PsndRate = currentConfig.s_PsndRate;\r
 172         PicoRegionOverride = currentConfig.s_PicoRegion;\r
 173         PicoAutoRgnOrder = currentConfig.s_PicoAutoRgnOrder;\r
 174         PicoCDBuffers = currentConfig.s_PicoCDBuffers;\r
 175 }\r
 176 \r
 177 void osd_text(int x, int y, const char *text)\r
 178 {\r
 179         int len = strlen(text)*8;\r
 180 \r
 181         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 182                 int *p, i, h;\r
 183                 x &= ~3; // align x\r
 184                 len = (len+3) >> 2;\r
 185                 for (h = 0; h < 8; h++) {\r
 186                         p = (int *) ((unsigned char *) gp2x_screen+x+320*(y+h));\r
 187                         for (i = len; i; i--, p++) *p = 0xe0e0e0e0;\r
 188                 }\r
 189                 emu_textOut8(x, y, text);\r
 190         } else {\r
 191                 int *p, i, h;\r
 192                 x &= ~1; // align x\r
 193                 len = (len+1) >> 1;\r
 194                 for (h = 0; h < 8; h++) {\r
 195                         p = (int *) ((unsigned short *) gp2x_screen+x+320*(y+h));\r
 196                         for (i = len; i; i--, p++) *p = (*p>>2)&0x39e7;\r
 197                 }\r
 198                 emu_textOut16(x, y, text);\r
 199         }\r
 200 }\r
 201 \r
 202 static void cd_leds(void)\r
 203 {\r
 204 //      static\r
 205         int old_reg;\r
 206 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 207         old_reg = Pico_mcd->s68k_regs[0];\r
 208 \r
 209         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 210                 // 8-bit modes\r
 211                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 212                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 213                 *(unsigned int *)((char *)gp2x_screen + 320*2+ 4) =\r
 214                 *(unsigned int *)((char *)gp2x_screen + 320*3+ 4) =\r
 215                 *(unsigned int *)((char *)gp2x_screen + 320*4+ 4) = col_g;\r
 216                 *(unsigned int *)((char *)gp2x_screen + 320*2+12) =\r
 217                 *(unsigned int *)((char *)gp2x_screen + 320*3+12) =\r
 218                 *(unsigned int *)((char *)gp2x_screen + 320*4+12) = col_r;\r
 219         } else {\r
 220                 // 16-bit modes\r
 221                 unsigned int *p = (unsigned int *)((short *)gp2x_screen + 320*2+4);\r
 222                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 223                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 224                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 225                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 226                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 227         }\r
 228 }\r
 229 \r
 230 static int EmuScanBegin16(unsigned int num)\r
 231 {\r
 232         if (!(Pico.video.reg[1]&8)) num += 8;\r
 233         DrawLineDest = (unsigned short *) gp2x_screen + 320 * num;\r
 234 \r
 235         return 0;\r
 236 }\r
 237 \r
 238 static int EmuScanBegin8(unsigned int num)\r
 239 {\r
 240         if (!(Pico.video.reg[1]&8)) num += 8;\r
 241         DrawLineDest = (unsigned char *)  gp2x_screen + 320 * num;\r
 242 \r
 243         return 0;\r
 244 }\r
 245 \r
 246 int localPal[0x100];\r
 247 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 248 \r
 249 static void blit(const char *fps, const char *notice)\r
 250 {\r
 251         int emu_opt = currentConfig.EmuOpt;\r
 252 \r
 253         if (PicoOpt&0x10)\r
 254         {\r
 255                 // 8bit fast renderer\r
 256                 if (Pico.m.dirtyPal) {\r
 257                         Pico.m.dirtyPal = 0;\r
 258                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 259                         // feed new palette to our device\r
 260                         gp2x_video_setpalette(localPal, 0x40);\r
 261                 }\r
 262                 // a hack for VR\r
 263                 if (PicoRead16Hook == PicoSVPRead16)\r
 264                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 265                 // do actual copy\r
 266                 vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 267         }\r
 268         else if (!(emu_opt&0x80))\r
 269         {\r
 270                 // 8bit accurate renderer\r
 271                 if (Pico.m.dirtyPal)\r
 272                 {\r
 273                         Pico.m.dirtyPal = 0;\r
 274                         if(Pico.video.reg[0xC]&8) { // shadow/hilight mode\r
 275                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 276                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 277                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 278                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 279                                 localPal[0xc0] = 0x0000c000;\r
 280                                 localPal[0xd0] = 0x00c00000;\r
 281                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 282                                 localPal[0xf0] = 0x00ffffff;\r
 283                                 gp2x_video_setpalette(localPal, 0x100);\r
 284                         } else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 285                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 286                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 287                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 288                                 gp2x_video_setpalette(localPal, 0xc0);\r
 289                         } else {\r
 290                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 291                                 gp2x_video_setpalette(localPal, 0x40);\r
 292                         }\r
 293                 }\r
 294         }\r
 295 \r
 296         if (notice || (emu_opt & 2)) {\r
 297                 int h = 232;\r
 298                 if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8)) h -= 8;\r
 299                 if (notice) osd_text(4, h, notice);\r
 300                 if (emu_opt & 2)\r
 301                         osd_text(osd_fps_x, h, fps);\r
 302         }\r
 303         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 304                 cd_leds();\r
 305 \r
 306         //gp2x_video_wait_vsync();\r
 307         gp2x_video_flip();\r
 308 \r
 309         if (!(PicoOpt&0x10)) {\r
 310                 if (!(Pico.video.reg[1]&8)) {\r
 311                         if (currentConfig.EmuOpt&0x80) {\r
 312                                 DrawLineDest = (unsigned short *) gp2x_screen + 320*8;\r
 313                         } else {\r
 314                                 DrawLineDest = (unsigned char  *) gp2x_screen + 320*8;\r
 315                         }\r
 316                 } else {\r
 317                         DrawLineDest = gp2x_screen;\r
 318                 }\r
 319         }\r
 320 }\r
 321 \r
 322 \r
 323 // clears whole screen or just the notice area (in all buffers)\r
 324 static void clearArea(int full)\r
 325 {\r
 326         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 327                 // 8-bit renderers\r
 328                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 329                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 330         } else {\r
 331                 // 16bit accurate renderer\r
 332                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 333                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 334         }\r
 335 }\r
 336 \r
 337 \r
 338 static void vidResetMode(void)\r
 339 {\r
 340         if (PicoOpt&0x10) {\r
 341                 gp2x_video_changemode(8);\r
 342         } else if (currentConfig.EmuOpt&0x80) {\r
 343                 gp2x_video_changemode(16);\r
 344                 PicoDrawSetColorFormat(1);\r
 345                 PicoScanBegin = EmuScanBegin16;\r
 346         } else {\r
 347                 gp2x_video_changemode(8);\r
 348                 PicoDrawSetColorFormat(2);\r
 349                 PicoScanBegin = EmuScanBegin8;\r
 350         }\r
 351         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 352                 // setup pal for 8-bit modes\r
 353                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 354                 localPal[0xd0] = 0x00c00000;\r
 355                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 356                 localPal[0xf0] = 0x00ffffff;\r
 357                 gp2x_video_setpalette(localPal, 0x100);\r
 358                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 359                 gp2x_video_flip();\r
 360         }\r
 361         Pico.m.dirtyPal = 1;\r
 362         // reset scaling\r
 363         if (currentConfig.scaling == 2 && !(Pico.video.reg[1]&8))\r
 364              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 365         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 366 }\r
 367 \r
 368 \r
 369 static void emu_msg_cb(const char *msg)\r
 370 {\r
 371         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 372                 // 8-bit renderers\r
 373                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 374                 osd_text(4, 232, msg);\r
 375                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232, 320*232, 320*8);\r
 376         } else {\r
 377                 // 16bit accurate renderer\r
 378                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 379                 osd_text(4, 232, msg);\r
 380                 gp2x_memcpy_all_buffers((char *)gp2x_screen+320*232*2, 320*232*2, 320*8*2);\r
 381         }\r
 382         gettimeofday(&noticeMsgTime, 0);\r
 383         noticeMsgTime.tv_sec -= 2;\r
 384 \r
 385         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 386         reset_timing = 1;\r
 387 }\r
 388 \r
 389 static void emu_state_cb(const char *str)\r
 390 {\r
 391         clearArea(0);\r
 392         blit("", str);\r
 393 }\r
 394 \r
 395 static void emu_msg_tray_open(void)\r
 396 {\r
 397         strcpy(noticeMsg, "CD tray opened");\r
 398         gettimeofday(&noticeMsgTime, 0);\r
 399 }\r
 400 \r
 401 static void RunEventsPico(unsigned int events, unsigned int gp2x_keys)\r
 402 {\r
 403         if (events & (1 << 3)) {\r
 404                 pico_inp_mode++;\r
 405                 if (pico_inp_mode > 2) pico_inp_mode = 0;\r
 406                 switch (pico_inp_mode) {\r
 407                         case 0: strcpy(noticeMsg, "Input: Joytick         "); break;\r
 408                         case 1: strcpy(noticeMsg, "Input: Pen on Storyware"); break;\r
 409                         case 2: strcpy(noticeMsg, "Input: Pen on Pad      "); break;\r
 410                 }\r
 411                 gettimeofday(&noticeMsgTime, 0);\r
 412         }\r
 413         if (events & (1 << 4)) {\r
 414                 PicoPicoPage--;\r
 415                 if (PicoPicoPage < 0) PicoPicoPage = 0;\r
 416                 sprintf(noticeMsg, "Page %i                 ", PicoPicoPage);\r
 417                 gettimeofday(&noticeMsgTime, 0);\r
 418         }\r
 419         if (events & (1 << 5)) {\r
 420                 PicoPicoPage++;\r
 421                 if (PicoPicoPage > 6) PicoPicoPage = 6;\r
 422                 sprintf(noticeMsg, "Page %i                 ", PicoPicoPage);\r
 423                 gettimeofday(&noticeMsgTime, 0);\r
 424         }\r
 425         if (pico_inp_mode != 0) {\r
 426                 PicoPad[0] &= ~0x0f; // release UDLR\r
 427                 if (gp2x_keys & GP2X_UP)   { pico_pen_y--; if (pico_pen_y <   0) pico_pen_y =   0; }\r
 428                 if (gp2x_keys & GP2X_DOWN) { pico_pen_y++; if (pico_pen_y > 251) pico_pen_y = 251; }\r
 429                 if (gp2x_keys & GP2X_LEFT) { pico_pen_x--; if (pico_pen_x <   0) pico_pen_x =   0; }\r
 430                 if (gp2x_keys & GP2X_RIGHT){ pico_pen_x++; if (pico_pen_x > 353) pico_pen_x = 353; }\r
 431                 PicoPicoPenPos[0] = 0x03c + pico_pen_x;\r
 432                 PicoPicoPenPos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 433         }\r
 434 }\r
 435 \r
 436 static void update_volume(int has_changed, int is_up)\r
 437 {\r
 438         static int prev_frame = 0, wait_frames = 0;\r
 439         int vol = currentConfig.volume;\r
 440 \r
 441         if (has_changed)\r
 442         {\r
 443                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 444                         wait_frames++;\r
 445                 else {\r
 446                         if (is_up) {\r
 447                                 if (vol < 99) vol++;\r
 448                         } else {\r
 449                                 if (vol >  0) vol--;\r
 450                         }\r
 451                         wait_frames = 0;\r
 452                         gp2x_sound_volume(vol, vol);\r
 453                         currentConfig.volume = vol;\r
 454                 }\r
 455                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 456                 gettimeofday(&noticeMsgTime, 0);\r
 457                 prev_frame = Pico.m.frame_count;\r
 458         }\r
 459 \r
 460         // set the right mixer func\r
 461         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 462         if (vol >= 5)\r
 463                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 464         else {\r
 465                 mix_32_to_16l_level = 5 - vol;\r
 466                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 467         }\r
 468 }\r
 469 \r
 470 static void change_fast_forward(int set_on)\r
 471 {\r
 472         static void *set_PsndOut = NULL;\r
 473         static int set_Frameskip, set_EmuOpt, is_on = 0;\r
 474 \r
 475         if (set_on && !is_on) {\r
 476                 set_PsndOut = PsndOut;\r
 477                 set_Frameskip = currentConfig.Frameskip;\r
 478                 set_EmuOpt = currentConfig.EmuOpt;\r
 479                 PsndOut = NULL;\r
 480                 currentConfig.Frameskip = 8;\r
 481                 currentConfig.EmuOpt &= ~4;\r
 482                 is_on = 1;\r
 483         }\r
 484         else if (!set_on && is_on) {\r
 485                 PsndOut = set_PsndOut;\r
 486                 currentConfig.Frameskip = set_Frameskip;\r
 487                 currentConfig.EmuOpt = set_EmuOpt;\r
 488                 PsndRerate(1);\r
 489                 update_volume(0, 0);\r
 490                 reset_timing = 1;\r
 491                 is_on = 0;\r
 492         }\r
 493 }\r
 494 \r
 495 static void RunEvents(unsigned int which)\r
 496 {\r
 497         if (which & 0x1800) // save or load (but not both)\r
 498         {\r
 499                 int do_it = 1;\r
 500                 if ( emu_checkSaveFile(state_slot) &&\r
 501                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) ||   // load\r
 502                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) { // save\r
 503                         unsigned long keys;\r
 504                         blit("", (which & 0x1000) ? "LOAD STATE? (Y=yes, X=no)" : "OVERWRITE SAVE? (Y=yes, X=no)");\r
 505                         while ( !((keys = gp2x_joystick_read(1)) & (GP2X_X|GP2X_Y)) )\r
 506                                 usleep(50*1024);\r
 507                         if (keys & GP2X_X) do_it = 0;\r
 508                         while ( gp2x_joystick_read(1) & (GP2X_X|GP2X_Y) ) // wait for release\r
 509                                 usleep(50*1024);\r
 510                         clearArea(0);\r
 511                 }\r
 512                 if (do_it) {\r
 513                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 514                         PicoStateProgressCB = emu_state_cb;\r
 515                         gp2x_memcpy_all_buffers(gp2x_screen, 0, 320*240*2);\r
 516                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 517                         PicoStateProgressCB = NULL;\r
 518                 }\r
 519 \r
 520                 reset_timing = 1;\r
 521         }\r
 522         if (which & 0x0400) // switch renderer\r
 523         {\r
 524                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 525                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 526                 else   currentConfig.EmuOpt &= ~0x80;\r
 527 \r
 528                 vidResetMode();\r
 529 \r
 530                 if (PicoOpt&0x10) {\r
 531                         strcpy(noticeMsg, " 8bit fast renderer");\r
 532                 } else if (currentConfig.EmuOpt&0x80) {\r
 533                         strcpy(noticeMsg, "16bit accurate renderer");\r
 534                 } else {\r
 535                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 536                 }\r
 537 \r
 538                 gettimeofday(&noticeMsgTime, 0);\r
 539         }\r
 540         if (which & 0x0300)\r
 541         {\r
 542                 if(which&0x0200) {\r
 543                         state_slot -= 1;\r
 544                         if(state_slot < 0) state_slot = 9;\r
 545                 } else {\r
 546                         state_slot += 1;\r
 547                         if(state_slot > 9) state_slot = 0;\r
 548                 }\r
 549                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 550                 gettimeofday(&noticeMsgTime, 0);\r
 551         }\r
 552         if (which & 0x0080) {\r
 553                 engineState = PGS_Menu;\r
 554         }\r
 555 }\r
 556 \r
 557 \r
 558 static void updateKeys(void)\r
 559 {\r
 560         unsigned int keys, keys2, allActions[2] = { 0, 0 }, events;\r
 561         static unsigned int prevEvents = 0;\r
 562         int joy, i;\r
 563 \r
 564         keys = gp2x_joystick_read(0);\r
 565         if (keys & GP2X_SELECT) {\r
 566                 engineState = select_exits ? PGS_Quit : PGS_Menu;\r
 567                 // wait until select is released, so menu would not resume game\r
 568                 while (gp2x_joystick_read(1) & GP2X_SELECT) usleep(50*1000);\r
 569         }\r
 570 \r
 571         keys &= CONFIGURABLE_KEYS;\r
 572         keys2 = keys;\r
 573 \r
 574         for (i = 0; i < 32; i++)\r
 575         {\r
 576                 if (keys2 & (1 << i))\r
 577                 {\r
 578                         int pl, acts = currentConfig.KeyBinds[i];\r
 579                         if (!acts) continue;\r
 580                         pl = (acts >> 16) & 1;\r
 581                         if (kb_combo_keys & (1 << i))\r
 582                         {\r
 583                                 int u = i+1, acts_c = acts & kb_combo_acts;\r
 584                                 // let's try to find the other one\r
 585                                 if (acts_c) {\r
 586                                         for (; u < 32; u++)\r
 587                                                 if ( (keys2 & (1 << u)) && (currentConfig.KeyBinds[u] & acts_c) ) {\r
 588                                                         allActions[pl] |= acts_c & currentConfig.KeyBinds[u];\r
 589                                                         keys2 &= ~((1 << i) | (1 << u));\r
 590                                                         break;\r
 591                                                 }\r
 592                                 }\r
 593                                 // add non-combo actions if combo ones were not found\r
 594                                 if (!acts_c || u == 32)\r
 595                                         allActions[pl] |= acts & ~kb_combo_acts;\r
 596                         } else {\r
 597                                 allActions[pl] |= acts;\r
 598                         }\r
 599                 }\r
 600         }\r
 601 \r
 602         // add joy inputs\r
 603         if (num_of_joys > 0)\r
 604         {\r
 605                 gp2x_usbjoy_update();\r
 606                 for (joy = 0; joy < num_of_joys; joy++) {\r
 607                         int btns = gp2x_usbjoy_check2(joy);\r
 608                         for (i = 0; i < 32; i++) {\r
 609                                 if (btns & (1 << i)) {\r
 610                                         int acts = currentConfig.JoyBinds[joy][i];\r
 611                                         int pl = (acts >> 16) & 1;\r
 612                                         allActions[pl] |= acts;\r
 613                                 }\r
 614                         }\r
 615                 }\r
 616         }\r
 617 \r
 618         PicoPad[0] = (unsigned short) allActions[0];\r
 619         PicoPad[1] = (unsigned short) allActions[1];\r
 620 \r
 621         events = (allActions[0] | allActions[1]) >> 16;\r
 622 \r
 623         // volume is treated in special way and triggered every frame\r
 624         if (events & 0x6000)\r
 625                 update_volume(1, events & 0x2000);\r
 626 \r
 627         if ((events ^ prevEvents) & 0x40)\r
 628                 change_fast_forward(events & 0x40);\r
 629 \r
 630         events &= ~prevEvents;\r
 631 \r
 632         if (PicoAHW == PAHW_PICO)\r
 633                 RunEventsPico(events, keys);\r
 634 \r
 635         if (events) RunEvents(events);\r
 636         if (movie_data) emu_updateMovie();\r
 637 \r
 638         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 639 }\r
 640 \r
 641 \r
 642 static void updateSound(int len)\r
 643 {\r
 644         if (PicoOpt&8) len<<=1;\r
 645 \r
 646         /* avoid writing audio when lagging behind to prevent audio lag */\r
 647         if (PicoSkipFrame != 2)\r
 648                 gp2x_sound_write(PsndOut, len<<1);\r
 649 }\r
 650 \r
 651 \r
 652 static void SkipFrame(int do_audio)\r
 653 {\r
 654         PicoSkipFrame=do_audio ? 1 : 2;\r
 655         PicoFrame();\r
 656         PicoSkipFrame=0;\r
 657 }\r
 658 \r
 659 \r
 660 void emu_forcedFrame(void)\r
 661 {\r
 662         int po_old = PicoOpt;\r
 663         int eo_old = currentConfig.EmuOpt;\r
 664 \r
 665         PicoOpt &= ~0x0010;\r
 666         PicoOpt |=  0x4080; // soft_scale | acc_sprites\r
 667         currentConfig.EmuOpt |= 0x80;\r
 668 \r
 669         //vidResetMode();\r
 670         PicoDrawSetColorFormat(1);\r
 671         PicoScanBegin = EmuScanBegin16;\r
 672         Pico.m.dirtyPal = 1;\r
 673         PicoFrameDrawOnly();\r
 674 \r
 675 /*\r
 676         if (!(Pico.video.reg[12]&1)) {\r
 677                 vidCpyM2 = vidCpyM2_32col;\r
 678                 clearArea(1);\r
 679         } else  vidCpyM2 = vidCpyM2_40col;\r
 680 \r
 681         vidCpyM2((unsigned char *)gp2x_screen+320*8, PicoDraw2FB+328*8);\r
 682         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 683         gp2x_video_setpalette(localPal, 0x40);\r
 684 */\r
 685         PicoOpt = po_old;\r
 686         currentConfig.EmuOpt = eo_old;\r
 687 }\r
 688 \r
 689 static void simpleWait(int thissec, int lim_time)\r
 690 {\r
 691         struct timeval tval;\r
 692 \r
 693         spend_cycles(1024);\r
 694         gettimeofday(&tval, 0);\r
 695         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 696 \r
 697         while (tval.tv_usec < lim_time)\r
 698         {\r
 699                 spend_cycles(1024);\r
 700                 gettimeofday(&tval, 0);\r
 701                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 702         }\r
 703 }\r
 704 \r
 705 \r
 706 #if 0\r
 707 static void tga_dump(void)\r
 708 {\r
 709 #define BYTE unsigned char\r
 710 #define WORD unsigned short\r
 711         struct\r
 712         {\r
 713                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
 714                 BYTE ColorMapType;    /* 01h  Color map type */\r
 715                 BYTE ImageType;       /* 02h  Image type code */\r
 716                 WORD CMapStart;       /* 03h  Color map origin */\r
 717                 WORD CMapLength;      /* 05h  Color map length */\r
 718                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
 719                 WORD XOffset;         /* 08h  X origin of image */\r
 720                 WORD YOffset;         /* 0Ah  Y origin of image */\r
 721                 WORD Width;           /* 0Ch  Width of image */\r
 722                 WORD Height;          /* 0Eh  Height of image */\r
 723                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
 724                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
 725         } __attribute__((packed)) TGAHEAD;\r
 726         static unsigned short oldscr[320*240];\r
 727         FILE *f; char name[128]; int i;\r
 728 \r
 729         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
 730         TGAHEAD.ImageType = 2;\r
 731         TGAHEAD.Width = 320;\r
 732         TGAHEAD.Height = 240;\r
 733         TGAHEAD.PixelDepth = 16;\r
 734         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
 735 \r
 736 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
 737 \r
 738         for (i = 0; i < 320*240; i++)\r
 739                 if(oldscr[i] != CONV(((unsigned short *)gp2x_screen)[i])) break;\r
 740         if (i < 320*240)\r
 741         {\r
 742                 for (i = 0; i < 320*240; i++)\r
 743                         oldscr[i] = CONV(((unsigned short *)gp2x_screen)[i]);\r
 744                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
 745                 f = fopen(name, "wb");\r
 746                 if (!f) { printf("!f\n"); exit(1); }\r
 747                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
 748                 fwrite(oldscr, 1, 320*240*2, f);\r
 749                 fclose(f);\r
 750         }\r
 751 }\r
 752 #endif\r
 753 \r
 754 \r
 755 void emu_Loop(void)\r
 756 {\r
 757         static int gp2x_old_clock = 200;\r
 758         static int PsndRate_old = 0, PicoOpt_old = 0, EmuOpt_old = 0, pal_old = 0;\r
 759         char fpsbuff[24]; // fps count c string\r
 760         struct timeval tval; // timing\r
 761         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 762         int  frames_done,  frames_shown,  thissec; // actual frames\r
 763         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 764         char *notice = 0;\r
 765 \r
 766         printf("entered emu_Loop()\n");\r
 767 \r
 768         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 769                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 770                 set_FCLK(currentConfig.CPUclock);\r
 771                 gp2x_old_clock = currentConfig.CPUclock;\r
 772                 printf(" done\n");\r
 773         }\r
 774 \r
 775         if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
 776                 set_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 777                 gp2x_old_gamma = currentConfig.gamma;\r
 778                 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 779         }\r
 780 \r
 781         if ((EmuOpt_old&0x2000) != (currentConfig.EmuOpt&0x2000)) {\r
 782                 if (currentConfig.EmuOpt&0x2000)\r
 783                      set_LCD_custom_rate(Pico.m.pal ? LCDR_100 : LCDR_120);\r
 784                 else unset_LCD_custom_rate();\r
 785         }\r
 786 \r
 787         EmuOpt_old = currentConfig.EmuOpt;\r
 788         fpsbuff[0] = 0;\r
 789 \r
 790         // make sure we are in correct mode\r
 791         vidResetMode();\r
 792         scaling_update();\r
 793         Pico.m.dirtyPal = 1;\r
 794         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 795         emu_findKeyBindCombos();\r
 796 \r
 797         // pal/ntsc might have changed, reset related stuff\r
 798         target_fps = Pico.m.pal ? 50 : 60;\r
 799         target_frametime = 1000000/target_fps;\r
 800         reset_timing = 1;\r
 801 \r
 802         // prepare sound stuff\r
 803         if (currentConfig.EmuOpt & 4)\r
 804         {\r
 805                 int snd_excess_add;\r
 806                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
 807                                 ((PicoOpt&0x200) && crashed_940)) {\r
 808                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 809                 }\r
 810                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 811                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 812                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 813                 gp2x_start_sound(PsndRate, 16, (PicoOpt&8)>>3);\r
 814                 gp2x_sound_volume(currentConfig.volume, currentConfig.volume);\r
 815                 PicoWriteSound = updateSound;\r
 816                 update_volume(0, 0);\r
 817                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 818                 PsndOut = sndBuffer;\r
 819                 PsndRate_old = PsndRate;\r
 820                 PicoOpt_old  = PicoOpt;\r
 821                 pal_old = Pico.m.pal;\r
 822         } else {\r
 823                 PsndOut = NULL;\r
 824         }\r
 825 \r
 826         // prepare CD buffer\r
 827         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 828 \r
 829         // calc vsync offset to sync timing code with vsync\r
 830         if (currentConfig.EmuOpt&0x2000) {\r
 831                 gettimeofday(&tval, 0);\r
 832                 gp2x_video_wait_vsync();\r
 833                 gettimeofday(&tval, 0);\r
 834                 vsync_offset = tval.tv_usec;\r
 835                 while (vsync_offset >= target_frametime)\r
 836                         vsync_offset -= target_frametime;\r
 837                 if (!vsync_offset) vsync_offset++;\r
 838                 printf("vsync_offset: %i\n", vsync_offset);\r
 839         } else\r
 840                 vsync_offset = 0;\r
 841 \r
 842         frames_done = frames_shown = thissec =\r
 843         pframes_done = pframes_shown = pthissec = 0;\r
 844 \r
 845         // loop\r
 846         while (engineState == PGS_Running)\r
 847         {\r
 848                 int modes;\r
 849 \r
 850                 gettimeofday(&tval, 0);\r
 851                 if (reset_timing) {\r
 852                         reset_timing = 0;\r
 853                         pthissec = tval.tv_sec;\r
 854                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 855                 }\r
 856 \r
 857                 // show notice message?\r
 858                 if (noticeMsgTime.tv_sec)\r
 859                 {\r
 860                         static int noticeMsgSum;\r
 861                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 862                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 863                                 clearArea(0);\r
 864                                 notice = 0;\r
 865                         } else {\r
 866                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 867                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 868                                 notice = noticeMsg;\r
 869                         }\r
 870                 }\r
 871 \r
 872                 // check for mode changes\r
 873                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 874                 if (modes != oldmodes)\r
 875                 {\r
 876                         int scalex = 320;\r
 877                         osd_fps_x = OSD_FPS_X;\r
 878                         if (modes & 4) {\r
 879                                 vidCpyM2 = vidCpyM2_40col;\r
 880                         } else {\r
 881                                 if (PicoOpt & 0x100) {\r
 882                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 883                                         scalex = 256;\r
 884                                         osd_fps_x = OSD_FPS_X - 64;\r
 885                                 } else {\r
 886                                         vidCpyM2 = vidCpyM2_32col;\r
 887                                 }\r
 888                         }\r
 889                         if (currentConfig.scaling == 2 && !(modes&8)) // want vertical scaling and game is not in 240 line mode\r
 890                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 891                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 892                         oldmodes = modes;\r
 893                         clearArea(1);\r
 894                 }\r
 895 \r
 896                 // second changed?\r
 897                 if (thissec != tval.tv_sec)\r
 898                 {\r
 899 #ifdef BENCHMARK\r
 900                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 901                         if (++bench == 10) {\r
 902                                 bench = 0;\r
 903                                 bench_fps_s = bench_fps;\r
 904                                 bf[bfp++ & 3] = bench_fps;\r
 905                                 bench_fps = 0;\r
 906                         }\r
 907                         bench_fps += frames_shown;\r
 908                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 909 #else\r
 910                         if (currentConfig.EmuOpt & 2) {\r
 911                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 912                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 913                         }\r
 914 #endif\r
 915                         frames_shown = frames_done = 0;\r
 916                         thissec = tval.tv_sec;\r
 917                 }\r
 918 #ifdef PFRAMES\r
 919                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 920 #endif\r
 921 \r
 922                 if (pthissec != tval.tv_sec)\r
 923                 {\r
 924                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 925                                 pframes_done = pframes_shown = 0;\r
 926                         } else {\r
 927                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 928                                 // when second changes, but we don't want buffer to starve.\r
 929                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 930                                         updateKeys();\r
 931                                         SkipFrame(1); pframes_done++;\r
 932                                 }\r
 933 \r
 934                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 935                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 936                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 937                         }\r
 938                         pthissec = tval.tv_sec;\r
 939                 }\r
 940 \r
 941                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 942                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 943                 {\r
 944                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 945                                 updateKeys();\r
 946                                 SkipFrame(1); pframes_done++; frames_done++;\r
 947                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 948                                         gettimeofday(&tval, 0);\r
 949                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 950                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 951                                                 simpleWait(pthissec, lim_time);\r
 952                                         }\r
 953                                 }\r
 954                                 lim_time += target_frametime;\r
 955                         }\r
 956                 }\r
 957                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 958                 {\r
 959                         // no time left for this frame - skip\r
 960                         if (tval.tv_usec - lim_time >= 300000) {\r
 961                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 962                                  * try to recover by resetting timing... */\r
 963                                 reset_timing = 1;\r
 964                                 continue;\r
 965                         }\r
 966                         updateKeys();\r
 967                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 968                         continue;\r
 969                 }\r
 970 \r
 971                 updateKeys();\r
 972                 PicoFrame();\r
 973 \r
 974                 // check time\r
 975                 gettimeofday(&tval, 0);\r
 976                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 977 \r
 978                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 979                         reset_timing = 1;\r
 980                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
 981                 {\r
 982                         // sleep or vsync if we are still too fast\r
 983                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
 984                         if (!reset_timing && tval.tv_usec < lim_time)\r
 985                         {\r
 986                                 // we are too fast\r
 987                                 if (vsync_offset) {\r
 988                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
 989                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
 990                                         gp2x_video_wait_vsync();\r
 991                                 } else {\r
 992                                         simpleWait(pthissec, lim_time);\r
 993                                 }\r
 994                         }\r
 995                 }\r
 996 \r
 997                 blit(fpsbuff, notice);\r
 998 \r
 999                 pframes_done++; pframes_shown++;\r
1000                  frames_done++;  frames_shown++;\r
1001         }\r
1002 \r
1003         change_fast_forward(0);\r
1004 \r
1005         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1006 \r
1007         // save SRAM\r
1008         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1009                 emu_state_cb("Writing SRAM/BRAM..");\r
1010                 emu_SaveLoadGame(0, 1);\r
1011                 SRam.changed = 0;\r
1012         }\r
1013 \r
1014         // if in 8bit mode, generate 16bit image for menu background\r
1015         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1016                 emu_forcedFrame();\r
1017 }\r
1018 \r
1019 \r
1020 void emu_ResetGame(void)\r
1021 {\r
1022         PicoReset();\r
1023         reset_timing = 1;\r
1024 }\r
1025 \r