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 "plat_gp2x.h"\r
  19 #include "soc.h"\r
  20 #include "../common/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 "../common/input.h"\r
  26 #include "../linux/sndout_oss.h"\r
  27 #include "version.h"\r
  28 \r
  29 #include <pico/pico_int.h>\r
  30 #include <pico/patch.h>\r
  31 #include <pico/sound/mix.h>\r
  32 #include <zlib/zlib.h>\r
  33 \r
  34 //#define PFRAMES\r
  35 \r
  36 #ifdef BENCHMARK\r
  37 #define OSD_FPS_X 220\r
  38 #else\r
  39 #define OSD_FPS_X 260\r
  40 #endif\r
  41 \r
  42 \r
  43 extern int crashed_940;\r
  44 \r
  45 static short __attribute__((aligned(4))) sndBuffer[2*44100/50];\r
  46 static struct timeval noticeMsgTime = { 0, 0 }; // when started showing\r
  47 static int osd_fps_x;\r
  48 static int gp2x_old_gamma = 100;\r
  49 unsigned char *PicoDraw2FB = NULL;  // temporary buffer for alt renderer\r
  50 int reset_timing = 0;\r
  51 \r
  52 #define PICO_PEN_ADJUST_X 4\r
  53 #define PICO_PEN_ADJUST_Y 2\r
  54 static int pico_pen_x = 320/2, pico_pen_y = 240/2;\r
  55 \r
  56 static void emu_msg_cb(const char *msg);\r
  57 static void emu_msg_tray_open(void);\r
  58 \r
  59 \r
  60 void emu_noticeMsgUpdated(void)\r
  61 {\r
  62         gettimeofday(&noticeMsgTime, 0);\r
  63 }\r
  64 \r
  65 int emu_getMainDir(char *dst, int len)\r
  66 {\r
  67         extern char **g_argv;\r
  68         int j;\r
  69 \r
  70         strncpy(dst, g_argv[0], len);\r
  71         len -= 32; // reserve\r
  72         if (len < 0) len = 0;\r
  73         dst[len] = 0;\r
  74         for (j = strlen(dst); j > 0; j--)\r
  75                 if (dst[j] == '/') { dst[j+1] = 0; break; }\r
  76 \r
  77         return j + 1;\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 &= ~(POPT_DIS_32C_BORDER|POPT_EN_SOFTSCALE);\r
 105         switch (currentConfig.scaling) {\r
 106                 default:break;\r
 107                 case EOPT_SCALE_HW_H:\r
 108                 case EOPT_SCALE_HW_HV:\r
 109                         PicoOpt |= POPT_DIS_32C_BORDER;\r
 110                         break;\r
 111                 case EOPT_SCALE_SW_H:\r
 112                         PicoOpt |= POPT_EN_SOFTSCALE;\r
 113                         break;\r
 114         }\r
 115 }\r
 116 \r
 117 \r
 118 void emu_Deinit(void)\r
 119 {\r
 120         // save SRAM\r
 121         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
 122                 emu_SaveLoadGame(0, 1);\r
 123                 SRam.changed = 0;\r
 124         }\r
 125 \r
 126         if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG))\r
 127                 emu_writelrom();\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_lcd_gamma(100, 0);\r
 136 }\r
 137 \r
 138 void emu_prepareDefaultConfig(void)\r
 139 {\r
 140         gp2x_soc_t soc;\r
 141 \r
 142         memset(&defaultConfig, 0, sizeof(defaultConfig));\r
 143         defaultConfig.EmuOpt    = 0x9d | EOPT_RAM_TIMINGS | 0x600; // | <- confirm_save, cd_leds\r
 144         defaultConfig.s_PicoOpt = 0x0f | POPT_EN_MCD_PCM|POPT_EN_MCD_CDDA|POPT_EN_SVP_DRC|POPT_ACC_SPRITES;\r
 145         defaultConfig.s_PsndRate = 44100;\r
 146         defaultConfig.s_PicoRegion = 0; // auto\r
 147         defaultConfig.s_PicoAutoRgnOrder = 0x184; // US, EU, JP\r
 148         defaultConfig.s_PicoCDBuffers = 0;\r
 149         defaultConfig.Frameskip = -1; // auto\r
 150         defaultConfig.CPUclock = default_cpu_clock;\r
 151         defaultConfig.volume = 50;\r
 152         defaultConfig.gamma = 100;\r
 153         defaultConfig.scaling = 0;\r
 154         defaultConfig.turbo_rate = 15;\r
 155 \r
 156         soc = soc_detect();\r
 157         if (soc == SOCID_MMSP2)\r
 158                 defaultConfig.s_PicoOpt |= POPT_EXT_FM;\r
 159 }\r
 160 \r
 161 void osd_text(int x, int y, const char *text)\r
 162 {\r
 163         int len = strlen(text)*8;\r
 164         int *p, i, h, offs;\r
 165 \r
 166         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 167                 len = (len+3) >> 2;\r
 168                 for (h = 0; h < 8; h++) {\r
 169                         offs = (x + g_screen_width * (y+h)) & ~3;\r
 170                         p = (int *) ((char *)g_screen_ptr + offs);\r
 171                         for (i = len; i; i--, p++)\r
 172                                 *p = 0xe0e0e0e0;\r
 173                 }\r
 174                 emu_textOut8(x, y, text);\r
 175         } else {\r
 176                 len = (len+1) >> 1;\r
 177                 for (h = 0; h < 8; h++) {\r
 178                         offs = (x + g_screen_width * (y+h)) & ~1;\r
 179                         p = (int *) ((short *)g_screen_ptr + offs);\r
 180                         for (i = len; i; i--, p++)\r
 181                                 *p = (*p >> 2) & 0x39e7;\r
 182                 }\r
 183                 emu_textOut16(x, y, text);\r
 184         }\r
 185 }\r
 186 \r
 187 static void draw_cd_leds(void)\r
 188 {\r
 189 //      static\r
 190         int old_reg;\r
 191 //      if (!((Pico_mcd->s68k_regs[0] ^ old_reg) & 3)) return; // no change // mmu hack problems?\r
 192         old_reg = Pico_mcd->s68k_regs[0];\r
 193 \r
 194         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 195                 // 8-bit modes\r
 196                 unsigned int col_g = (old_reg & 2) ? 0xc0c0c0c0 : 0xe0e0e0e0;\r
 197                 unsigned int col_r = (old_reg & 1) ? 0xd0d0d0d0 : 0xe0e0e0e0;\r
 198                 *(unsigned int *)((char *)g_screen_ptr + 320*2+ 4) =\r
 199                 *(unsigned int *)((char *)g_screen_ptr + 320*3+ 4) =\r
 200                 *(unsigned int *)((char *)g_screen_ptr + 320*4+ 4) = col_g;\r
 201                 *(unsigned int *)((char *)g_screen_ptr + 320*2+12) =\r
 202                 *(unsigned int *)((char *)g_screen_ptr + 320*3+12) =\r
 203                 *(unsigned int *)((char *)g_screen_ptr + 320*4+12) = col_r;\r
 204         } else {\r
 205                 // 16-bit modes\r
 206                 unsigned int *p = (unsigned int *)((short *)g_screen_ptr + 320*2+4);\r
 207                 unsigned int col_g = (old_reg & 2) ? 0x06000600 : 0;\r
 208                 unsigned int col_r = (old_reg & 1) ? 0xc000c000 : 0;\r
 209                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 210                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r; p += 320/2 - 12/2;\r
 211                 *p++ = col_g; *p++ = col_g; p+=2; *p++ = col_r; *p++ = col_r;\r
 212         }\r
 213 }\r
 214 \r
 215 static void draw_pico_ptr(void)\r
 216 {\r
 217         unsigned short *p = (unsigned short *)g_screen_ptr;\r
 218 \r
 219         // only if pen enabled and for 16bit modes\r
 220         if (pico_inp_mode == 0 || (PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80)) return;\r
 221 \r
 222         if (!(Pico.video.reg[12]&1) && !(PicoOpt&POPT_DIS_32C_BORDER))\r
 223                 p += 32;\r
 224 \r
 225         p += 320 * (pico_pen_y + PICO_PEN_ADJUST_Y);\r
 226         p += pico_pen_x + PICO_PEN_ADJUST_X;\r
 227         p[0]   ^= 0xffff;\r
 228         p[319] ^= 0xffff;\r
 229         p[320] ^= 0xffff;\r
 230         p[321] ^= 0xffff;\r
 231         p[640] ^= 0xffff;\r
 232 }\r
 233 \r
 234 static int EmuScanBegin16(unsigned int num)\r
 235 {\r
 236         if (!(Pico.video.reg[1]&8)) num += 8;\r
 237         DrawLineDest = (unsigned short *) g_screen_ptr + g_screen_width * num;\r
 238 \r
 239         return 0;\r
 240 }\r
 241 \r
 242 static int EmuScanBegin8(unsigned int num)\r
 243 {\r
 244         if (!(Pico.video.reg[1]&8)) num += 8;\r
 245         DrawLineDest = (unsigned char *)  g_screen_ptr + g_screen_width * num;\r
 246 \r
 247         return 0;\r
 248 }\r
 249 \r
 250 int localPal[0x100];\r
 251 static void (*vidCpyM2)(void *dest, void *src) = NULL;\r
 252 \r
 253 static void blit(const char *fps, const char *notice)\r
 254 {\r
 255         int emu_opt = currentConfig.EmuOpt;\r
 256 \r
 257         if (PicoOpt&0x10)\r
 258         {\r
 259                 // 8bit fast renderer\r
 260                 if (Pico.m.dirtyPal) {\r
 261                         Pico.m.dirtyPal = 0;\r
 262                         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 263                         // feed new palette to our device\r
 264                         gp2x_video_setpalette(localPal, 0x40);\r
 265                 }\r
 266                 // a hack for VR\r
 267                 if (PicoRead16Hook == PicoSVPRead16)\r
 268                         memset32((int *)(PicoDraw2FB+328*8+328*223), 0xe0e0e0e0, 328);\r
 269                 // do actual copy\r
 270                 vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);\r
 271         }\r
 272         else if (!(emu_opt&0x80))\r
 273         {\r
 274                 // 8bit accurate renderer\r
 275                 if (Pico.m.dirtyPal)\r
 276                 {\r
 277                         int pallen = 0xc0;\r
 278                         Pico.m.dirtyPal = 0;\r
 279                         if (Pico.video.reg[0xC]&8) // shadow/hilight mode\r
 280                         {\r
 281                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 282                                 vidConvCpyRGB32sh(localPal+0x40, Pico.cram, 0x40);\r
 283                                 vidConvCpyRGB32hi(localPal+0x80, Pico.cram, 0x40);\r
 284                                 memcpy32(localPal+0xc0, localPal+0x40, 0x40);\r
 285                                 pallen = 0x100;\r
 286                         }\r
 287                         else if (rendstatus & PDRAW_SONIC_MODE) { // mid-frame palette changes\r
 288                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 289                                 vidConvCpyRGB32(localPal+0x40, HighPal, 0x40);\r
 290                                 vidConvCpyRGB32(localPal+0x80, HighPal+0x40, 0x40);\r
 291                         }\r
 292                         else {\r
 293                                 vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 294                                 memcpy32(localPal+0x80, localPal, 0x40); // for spr prio mess\r
 295                         }\r
 296                         if (pallen > 0xc0) {\r
 297                                 localPal[0xc0] = 0x0000c000;\r
 298                                 localPal[0xd0] = 0x00c00000;\r
 299                                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 300                                 localPal[0xf0] = 0x00ffffff;\r
 301                         }\r
 302                         gp2x_video_setpalette(localPal, pallen);\r
 303                 }\r
 304         }\r
 305 \r
 306         if (notice || (emu_opt & 2)) {\r
 307                 int h = 232;\r
 308                 if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))\r
 309                         h -= 8;\r
 310                 if (notice)\r
 311                         osd_text(4, h, notice);\r
 312                 if (emu_opt & 2)\r
 313                         osd_text(osd_fps_x, h, fps);\r
 314         }\r
 315         if ((emu_opt & 0x400) && (PicoAHW & PAHW_MCD))\r
 316                 draw_cd_leds();\r
 317         if (PicoAHW & PAHW_PICO)\r
 318                 draw_pico_ptr();\r
 319 \r
 320         //gp2x_video_wait_vsync();\r
 321         gp2x_video_flip();\r
 322 \r
 323         if (!(PicoOpt&0x10)) {\r
 324                 if (!(Pico.video.reg[1]&8)) {\r
 325                         if (currentConfig.EmuOpt&0x80) {\r
 326                                 DrawLineDest = (unsigned short *) g_screen_ptr + 320*8;\r
 327                         } else {\r
 328                                 DrawLineDest = (unsigned char  *) g_screen_ptr + 320*8;\r
 329                         }\r
 330                 } else {\r
 331                         DrawLineDest = g_screen_ptr;\r
 332                 }\r
 333         }\r
 334 }\r
 335 \r
 336 \r
 337 // clears whole screen or just the notice area (in all buffers)\r
 338 static void clearArea(int full)\r
 339 {\r
 340         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 341                 // 8-bit renderers\r
 342                 if (full) gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 343                 else      gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 344         } else {\r
 345                 // 16bit accurate renderer\r
 346                 if (full) gp2x_memset_all_buffers(0, 0, 320*240*2);\r
 347                 else      gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 348         }\r
 349 }\r
 350 \r
 351 \r
 352 static void vidResetMode(void)\r
 353 {\r
 354         if (PicoOpt&0x10) {\r
 355                 gp2x_video_changemode(8);\r
 356         } else if (currentConfig.EmuOpt&0x80) {\r
 357                 gp2x_video_changemode(16);\r
 358                 PicoDrawSetColorFormat(1);\r
 359                 PicoScanBegin = EmuScanBegin16;\r
 360         } else {\r
 361                 gp2x_video_changemode(8);\r
 362                 PicoDrawSetColorFormat(2);\r
 363                 PicoScanBegin = EmuScanBegin8;\r
 364         }\r
 365         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 366                 // setup pal for 8-bit modes\r
 367                 localPal[0xc0] = 0x0000c000; // MCD LEDs\r
 368                 localPal[0xd0] = 0x00c00000;\r
 369                 localPal[0xe0] = 0x00000000; // reserved pixels for OSD\r
 370                 localPal[0xf0] = 0x00ffffff;\r
 371                 gp2x_video_setpalette(localPal, 0x100);\r
 372                 gp2x_memset_all_buffers(0, 0xe0, 320*240);\r
 373                 gp2x_video_flip();\r
 374         }\r
 375         Pico.m.dirtyPal = 1;\r
 376         // reset scaling\r
 377         if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(Pico.video.reg[1]&8))\r
 378              gp2x_video_RGB_setscaling(8, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 224);\r
 379         else gp2x_video_RGB_setscaling(0, (PicoOpt&0x100)&&!(Pico.video.reg[12]&1) ? 256 : 320, 240);\r
 380 }\r
 381 \r
 382 \r
 383 static void emu_msg_cb(const char *msg)\r
 384 {\r
 385         if ((PicoOpt&0x10)||!(currentConfig.EmuOpt&0x80)) {\r
 386                 // 8-bit renderers\r
 387                 gp2x_memset_all_buffers(320*232, 0xe0, 320*8);\r
 388                 osd_text(4, 232, msg);\r
 389                 gp2x_memcpy_all_buffers((char *)g_screen_ptr+320*232, 320*232, 320*8);\r
 390         } else {\r
 391                 // 16bit accurate renderer\r
 392                 gp2x_memset_all_buffers(320*232*2, 0, 320*8*2);\r
 393                 osd_text(4, 232, msg);\r
 394                 gp2x_memcpy_all_buffers((char *)g_screen_ptr+320*232*2, 320*232*2, 320*8*2);\r
 395         }\r
 396         gettimeofday(&noticeMsgTime, 0);\r
 397         noticeMsgTime.tv_sec -= 2;\r
 398 \r
 399         /* assumption: emu_msg_cb gets called only when something slow is about to happen */\r
 400         reset_timing = 1;\r
 401 }\r
 402 \r
 403 static void emu_state_cb(const char *str)\r
 404 {\r
 405         clearArea(0);\r
 406         blit("", str);\r
 407 }\r
 408 \r
 409 static void emu_msg_tray_open(void)\r
 410 {\r
 411         strcpy(noticeMsg, "CD tray opened");\r
 412         gettimeofday(&noticeMsgTime, 0);\r
 413 }\r
 414 \r
 415 static void RunEventsPico(unsigned int events)\r
 416 {\r
 417         int ret, px, py, lim_x;\r
 418         static int pdown_frames = 0;\r
 419 \r
 420         emu_RunEventsPico(events);\r
 421 \r
 422         if (pico_inp_mode == 0) return;\r
 423 \r
 424         // for F200\r
 425         ret = gp2x_touchpad_read(&px, &py);\r
 426         if (ret >= 0)\r
 427         {\r
 428                 if (ret > 35000)\r
 429                 {\r
 430                         if (pdown_frames++ > 5)\r
 431                                 PicoPad[0] |= 0x20;\r
 432 \r
 433                         pico_pen_x = px;\r
 434                         pico_pen_y = py;\r
 435                         if (!(Pico.video.reg[12]&1)) {\r
 436                                 pico_pen_x -= 32;\r
 437                                 if (pico_pen_x <   0) pico_pen_x = 0;\r
 438                                 if (pico_pen_x > 248) pico_pen_x = 248;\r
 439                         }\r
 440                         if (pico_pen_y > 224) pico_pen_y = 224;\r
 441                 }\r
 442                 else\r
 443                         pdown_frames = 0;\r
 444 \r
 445                 //if (ret == 0)\r
 446                 //      PicoPicohw.pen_pos[0] = PicoPicohw.pen_pos[1] = 0x8000;\r
 447         }\r
 448 \r
 449         if (PicoPad[0] & 1) pico_pen_y--;\r
 450         if (PicoPad[0] & 2) pico_pen_y++;\r
 451         if (PicoPad[0] & 4) pico_pen_x--;\r
 452         if (PicoPad[0] & 8) pico_pen_x++;\r
 453         PicoPad[0] &= ~0x0f; // release UDLR\r
 454 \r
 455         lim_x = (Pico.video.reg[12]&1) ? 319 : 255;\r
 456         if (pico_pen_y < 8) pico_pen_y = 8;\r
 457         if (pico_pen_y > 224-PICO_PEN_ADJUST_Y) pico_pen_y = 224-PICO_PEN_ADJUST_Y;\r
 458         if (pico_pen_x < 0) pico_pen_x = 0;\r
 459         if (pico_pen_x > lim_x-PICO_PEN_ADJUST_X) pico_pen_x = lim_x-PICO_PEN_ADJUST_X;\r
 460 \r
 461         PicoPicohw.pen_pos[0] = pico_pen_x;\r
 462         if (!(Pico.video.reg[12]&1)) PicoPicohw.pen_pos[0] += pico_pen_x/4;\r
 463         PicoPicohw.pen_pos[0] += 0x3c;\r
 464         PicoPicohw.pen_pos[1] = pico_inp_mode == 1 ? (0x2f8 + pico_pen_y) : (0x1fc + pico_pen_y);\r
 465 }\r
 466 \r
 467 static void update_volume(int has_changed, int is_up)\r
 468 {\r
 469         static int prev_frame = 0, wait_frames = 0;\r
 470         int vol = currentConfig.volume;\r
 471 \r
 472         if (has_changed)\r
 473         {\r
 474                 if (vol < 5 && (PicoOpt&8) && prev_frame == Pico.m.frame_count - 1 && wait_frames < 12)\r
 475                         wait_frames++;\r
 476                 else {\r
 477                         if (is_up) {\r
 478                                 if (vol < 99) vol++;\r
 479                         } else {\r
 480                                 if (vol >  0) vol--;\r
 481                         }\r
 482                         wait_frames = 0;\r
 483                         sndout_oss_setvol(vol, vol);\r
 484                         currentConfig.volume = vol;\r
 485                 }\r
 486                 sprintf(noticeMsg, "VOL: %02i", vol);\r
 487                 gettimeofday(&noticeMsgTime, 0);\r
 488                 prev_frame = Pico.m.frame_count;\r
 489         }\r
 490 \r
 491         // set the right mixer func\r
 492         if (!(PicoOpt&8)) return; // just use defaults for mono\r
 493         if (vol >= 5)\r
 494                 PsndMix_32_to_16l = mix_32_to_16l_stereo;\r
 495         else {\r
 496                 mix_32_to_16l_level = 5 - vol;\r
 497                 PsndMix_32_to_16l = mix_32_to_16l_stereo_lvl;\r
 498         }\r
 499 }\r
 500 \r
 501 static void RunEvents(unsigned int which)\r
 502 {\r
 503         if (which & 0x1800) // save or load (but not both)\r
 504         {\r
 505                 int do_it = 1;\r
 506                 if ( emu_checkSaveFile(state_slot) &&\r
 507                                 (( (which & 0x1000) && (currentConfig.EmuOpt & 0x800)) || // load\r
 508                                  (!(which & 0x1000) && (currentConfig.EmuOpt & 0x200))) ) // save\r
 509                 {\r
 510                         const char *nm;\r
 511                         char tmp[64];\r
 512                         int keys, len;\r
 513 \r
 514                         strcpy(tmp, (which & 0x1000) ? "LOAD STATE? " : "OVERWRITE SAVE? ");\r
 515                         len = strlen(tmp);\r
 516                         nm = in_get_key_name(-1, -PBTN_MA3);\r
 517                         snprintf(tmp + len, sizeof(tmp) - len, "(%s=yes, ", nm);\r
 518                         len = strlen(tmp);\r
 519                         nm = in_get_key_name(-1, -PBTN_MBACK);\r
 520                         snprintf(tmp + len, sizeof(tmp) - len, "%s=no)", nm);\r
 521 \r
 522                         blit("", tmp);\r
 523 \r
 524                         in_set_blocking(1);\r
 525                         while (in_menu_wait_any(50) & (PBTN_MA3|PBTN_MBACK));   // wait for release\r
 526                         while ( !((keys = in_menu_wait_any(50)) & (PBTN_MA3|PBTN_MBACK)) ); // .. press\r
 527                         if (keys & PBTN_MBACK)\r
 528                                 do_it = 0;\r
 529                         while (in_menu_wait_any(50) & (PBTN_MA3|PBTN_MBACK));   // .. release\r
 530                         in_set_blocking(0);\r
 531 \r
 532                         clearArea(0);\r
 533                 }\r
 534                 if (do_it) {\r
 535                         osd_text(4, 232, (which & 0x1000) ? "LOADING GAME" : "SAVING GAME");\r
 536                         PicoStateProgressCB = emu_state_cb;\r
 537                         gp2x_memcpy_all_buffers(g_screen_ptr, 0, 320*240*2);\r
 538                         emu_SaveLoadGame((which & 0x1000) >> 12, 0);\r
 539                         PicoStateProgressCB = NULL;\r
 540                 }\r
 541 \r
 542                 reset_timing = 1;\r
 543         }\r
 544         if (which & 0x0400) // switch renderer\r
 545         {\r
 546                 if      (  PicoOpt&0x10)             { PicoOpt&=~0x10; currentConfig.EmuOpt |= 0x80; }\r
 547                 else if (!(currentConfig.EmuOpt&0x80)) PicoOpt|= 0x10;\r
 548                 else   currentConfig.EmuOpt &= ~0x80;\r
 549 \r
 550                 vidResetMode();\r
 551 \r
 552                 if (PicoOpt&0x10) {\r
 553                         strcpy(noticeMsg, " 8bit fast renderer");\r
 554                 } else if (currentConfig.EmuOpt&0x80) {\r
 555                         strcpy(noticeMsg, "16bit accurate renderer");\r
 556                 } else {\r
 557                         strcpy(noticeMsg, " 8bit accurate renderer");\r
 558                 }\r
 559 \r
 560                 emu_noticeMsgUpdated();\r
 561         }\r
 562         if (which & 0x0300)\r
 563         {\r
 564                 if(which&0x0200) {\r
 565                         state_slot -= 1;\r
 566                         if(state_slot < 0) state_slot = 9;\r
 567                 } else {\r
 568                         state_slot += 1;\r
 569                         if(state_slot > 9) state_slot = 0;\r
 570                 }\r
 571                 sprintf(noticeMsg, "SAVE SLOT %i [%s]", state_slot, emu_checkSaveFile(state_slot) ? "USED" : "FREE");\r
 572                 emu_noticeMsgUpdated();\r
 573         }\r
 574         if (which & 0x0080) {\r
 575                 engineState = PGS_Menu;\r
 576         }\r
 577 }\r
 578 \r
 579 static void updateKeys(void)\r
 580 {\r
 581         unsigned int allActions[2] = { 0, 0 }, events;\r
 582         static unsigned int prevEvents = 0;\r
 583 \r
 584         /* FIXME: player2 */\r
 585         allActions[0] = in_update();\r
 586 \r
 587         PicoPad[0] = allActions[0] & 0xfff;\r
 588         PicoPad[1] = allActions[1] & 0xfff;\r
 589 \r
 590         if (allActions[0] & 0x7000) emu_DoTurbo(&PicoPad[0], allActions[0]);\r
 591         if (allActions[1] & 0x7000) emu_DoTurbo(&PicoPad[1], allActions[1]);\r
 592 \r
 593         events = (allActions[0] | allActions[1]) >> 16;\r
 594 \r
 595         // volume is treated in special way and triggered every frame\r
 596         if (events & 0x6000)\r
 597                 update_volume(1, events & 0x2000);\r
 598 \r
 599         if ((events ^ prevEvents) & 0x40) {\r
 600                 emu_changeFastForward(events & 0x40);\r
 601                 update_volume(0, 0);\r
 602                 reset_timing = 1;\r
 603         }\r
 604 \r
 605         events &= ~prevEvents;\r
 606 \r
 607         if (PicoAHW == PAHW_PICO)\r
 608                 RunEventsPico(events);\r
 609         if (events) RunEvents(events);\r
 610         if (movie_data) emu_updateMovie();\r
 611 \r
 612         prevEvents = (allActions[0] | allActions[1]) >> 16;\r
 613 }\r
 614 \r
 615 \r
 616 static void updateSound(int len)\r
 617 {\r
 618         if (PicoOpt&8) len<<=1;\r
 619 \r
 620         /* avoid writing audio when lagging behind to prevent audio lag */\r
 621         if (PicoSkipFrame != 2)\r
 622                 sndout_oss_write(PsndOut, len<<1);\r
 623 }\r
 624 \r
 625 void emu_startSound(void)\r
 626 {\r
 627         static int PsndRate_old = 0, PicoOpt_old = 0, pal_old = 0;\r
 628         int target_fps = Pico.m.pal ? 50 : 60;\r
 629 \r
 630         PsndOut = NULL;\r
 631 \r
 632         // prepare sound stuff\r
 633         if (currentConfig.EmuOpt & 4)\r
 634         {\r
 635                 int snd_excess_add;\r
 636                 if (PsndRate != PsndRate_old || (PicoOpt&0x20b) != (PicoOpt_old&0x20b) || Pico.m.pal != pal_old ||\r
 637                                 ((PicoOpt&0x200) && crashed_940)) {\r
 638                         PsndRerate(Pico.m.frame_count ? 1 : 0);\r
 639                 }\r
 640                 snd_excess_add = ((PsndRate - PsndLen*target_fps)<<16) / target_fps;\r
 641                 printf("starting audio: %i len: %i (ex: %04x) stereo: %i, pal: %i\n",\r
 642                         PsndRate, PsndLen, snd_excess_add, (PicoOpt&8)>>3, Pico.m.pal);\r
 643                 sndout_oss_start(PsndRate, 16, (PicoOpt&8)>>3);\r
 644                 sndout_oss_setvol(currentConfig.volume, currentConfig.volume);\r
 645                 PicoWriteSound = updateSound;\r
 646                 update_volume(0, 0);\r
 647                 memset(sndBuffer, 0, sizeof(sndBuffer));\r
 648                 PsndOut = sndBuffer;\r
 649                 PsndRate_old = PsndRate;\r
 650                 PicoOpt_old  = PicoOpt;\r
 651                 pal_old = Pico.m.pal;\r
 652         }\r
 653 }\r
 654 \r
 655 void emu_endSound(void)\r
 656 {\r
 657 }\r
 658 \r
 659 /* wait until we can write more sound */\r
 660 void emu_waitSound(void)\r
 661 {\r
 662         // don't need to do anything, writes will block by themselves\r
 663 }\r
 664 \r
 665 \r
 666 static void SkipFrame(int do_audio)\r
 667 {\r
 668         PicoSkipFrame=do_audio ? 1 : 2;\r
 669         PicoFrame();\r
 670         PicoSkipFrame=0;\r
 671 }\r
 672 \r
 673 \r
 674 void emu_forcedFrame(int opts)\r
 675 {\r
 676         int po_old = PicoOpt;\r
 677         int eo_old = currentConfig.EmuOpt;\r
 678 \r
 679         PicoOpt &= ~0x10;\r
 680         PicoOpt |= opts|POPT_ACC_SPRITES; // acc_sprites\r
 681         currentConfig.EmuOpt |= 0x80;\r
 682 \r
 683         //vidResetMode();\r
 684         PicoDrawSetColorFormat(1);\r
 685         PicoScanBegin = EmuScanBegin16;\r
 686         Pico.m.dirtyPal = 1;\r
 687         PicoFrameDrawOnly();\r
 688 \r
 689 /*\r
 690         if (!(Pico.video.reg[12]&1)) {\r
 691                 vidCpyM2 = vidCpyM2_32col;\r
 692                 clearArea(1);\r
 693         } else  vidCpyM2 = vidCpyM2_40col;\r
 694 \r
 695         vidCpyM2((unsigned char *)g_screen_ptr+320*8, PicoDraw2FB+328*8);\r
 696         vidConvCpyRGB32(localPal, Pico.cram, 0x40);\r
 697         gp2x_video_setpalette(localPal, 0x40);\r
 698 */\r
 699         PicoOpt = po_old;\r
 700         currentConfig.EmuOpt = eo_old;\r
 701 }\r
 702 \r
 703 void emu_platformDebugCat(char *str)\r
 704 {\r
 705         // nothing\r
 706 }\r
 707 \r
 708 static void simpleWait(int thissec, int lim_time)\r
 709 {\r
 710         struct timeval tval;\r
 711 \r
 712         spend_cycles(1024);\r
 713         gettimeofday(&tval, 0);\r
 714         if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 715 \r
 716         while (tval.tv_usec < lim_time)\r
 717         {\r
 718                 spend_cycles(1024);\r
 719                 gettimeofday(&tval, 0);\r
 720                 if (thissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 721         }\r
 722 }\r
 723 \r
 724 \r
 725 #if 0\r
 726 static void tga_dump(void)\r
 727 {\r
 728 #define BYTE unsigned char\r
 729 #define WORD unsigned short\r
 730         struct\r
 731         {\r
 732                 BYTE IDLength;        /* 00h  Size of Image ID field */\r
 733                 BYTE ColorMapType;    /* 01h  Color map type */\r
 734                 BYTE ImageType;       /* 02h  Image type code */\r
 735                 WORD CMapStart;       /* 03h  Color map origin */\r
 736                 WORD CMapLength;      /* 05h  Color map length */\r
 737                 BYTE CMapDepth;       /* 07h  Depth of color map entries */\r
 738                 WORD XOffset;         /* 08h  X origin of image */\r
 739                 WORD YOffset;         /* 0Ah  Y origin of image */\r
 740                 WORD Width;           /* 0Ch  Width of image */\r
 741                 WORD Height;          /* 0Eh  Height of image */\r
 742                 BYTE PixelDepth;      /* 10h  Image pixel size */\r
 743                 BYTE ImageDescriptor; /* 11h  Image descriptor byte */\r
 744         } __attribute__((packed)) TGAHEAD;\r
 745         static unsigned short oldscr[320*240];\r
 746         FILE *f; char name[128]; int i;\r
 747 \r
 748         memset(&TGAHEAD, 0, sizeof(TGAHEAD));\r
 749         TGAHEAD.ImageType = 2;\r
 750         TGAHEAD.Width = 320;\r
 751         TGAHEAD.Height = 240;\r
 752         TGAHEAD.PixelDepth = 16;\r
 753         TGAHEAD.ImageDescriptor = 2<<4; // image starts at top-left\r
 754 \r
 755 #define CONV(X) (((X>>1)&0x7fe0)|(X&0x1f)) // 555?\r
 756 \r
 757         for (i = 0; i < 320*240; i++)\r
 758                 if(oldscr[i] != CONV(((unsigned short *)g_screen_ptr)[i])) break;\r
 759         if (i < 320*240)\r
 760         {\r
 761                 for (i = 0; i < 320*240; i++)\r
 762                         oldscr[i] = CONV(((unsigned short *)g_screen_ptr)[i]);\r
 763                 sprintf(name, "%05i.tga", Pico.m.frame_count);\r
 764                 f = fopen(name, "wb");\r
 765                 if (!f) { printf("!f\n"); exit(1); }\r
 766                 fwrite(&TGAHEAD, 1, sizeof(TGAHEAD), f);\r
 767                 fwrite(oldscr, 1, 320*240*2, f);\r
 768                 fclose(f);\r
 769         }\r
 770 }\r
 771 #endif\r
 772 \r
 773 \r
 774 void emu_Loop(void)\r
 775 {\r
 776         static int gp2x_old_clock = -1, EmuOpt_old = 0;\r
 777         char fpsbuff[24]; // fps count c string\r
 778         struct timeval tval; // timing\r
 779         int pframes_done, pframes_shown, pthissec; // "period" frames, used for sync\r
 780         int  frames_done,  frames_shown,  thissec; // actual frames\r
 781         int oldmodes = 0, target_fps, target_frametime, lim_time, vsync_offset, i;\r
 782         char *notice = 0;\r
 783 \r
 784         printf("entered emu_Loop()\n");\r
 785 \r
 786         if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_RAM_TIMINGS) {\r
 787                 if (currentConfig.EmuOpt & EOPT_RAM_TIMINGS)\r
 788                         set_ram_timings();\r
 789                 else\r
 790                         unset_ram_timings();\r
 791         }\r
 792 \r
 793         if (gp2x_old_clock < 0)\r
 794                 gp2x_old_clock = default_cpu_clock;\r
 795         if (gp2x_old_clock != currentConfig.CPUclock) {\r
 796                 printf("changing clock to %i...", currentConfig.CPUclock); fflush(stdout);\r
 797                 gp2x_set_cpuclk(currentConfig.CPUclock);\r
 798                 gp2x_old_clock = currentConfig.CPUclock;\r
 799                 printf(" done\n");\r
 800         }\r
 801 \r
 802         if (gp2x_old_gamma != currentConfig.gamma || (EmuOpt_old&0x1000) != (currentConfig.EmuOpt&0x1000)) {\r
 803                 set_lcd_gamma(currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 804                 gp2x_old_gamma = currentConfig.gamma;\r
 805                 printf("updated gamma to %i, A_SN's curve: %i\n", currentConfig.gamma, !!(currentConfig.EmuOpt&0x1000));\r
 806         }\r
 807 \r
 808         if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_PSYNC) {\r
 809                 if (currentConfig.EmuOpt & EOPT_PSYNC)\r
 810                         set_lcd_custom_rate(Pico.m.pal);\r
 811                 else\r
 812                         unset_lcd_custom_rate();\r
 813         }\r
 814 \r
 815         if ((EmuOpt_old ^ currentConfig.EmuOpt) & EOPT_MMUHACK)\r
 816                 gp2x_make_fb_bufferable(currentConfig.EmuOpt & EOPT_MMUHACK);\r
 817 \r
 818         EmuOpt_old = currentConfig.EmuOpt;\r
 819         fpsbuff[0] = 0;\r
 820 \r
 821         // make sure we are in correct mode\r
 822         vidResetMode();\r
 823         scaling_update();\r
 824         Pico.m.dirtyPal = 1;\r
 825         oldmodes = ((Pico.video.reg[12]&1)<<2) ^ 0xc;\r
 826 \r
 827         // pal/ntsc might have changed, reset related stuff\r
 828         target_fps = Pico.m.pal ? 50 : 60;\r
 829         target_frametime = 1000000/target_fps;\r
 830         reset_timing = 1;\r
 831 \r
 832         emu_startSound();\r
 833 \r
 834         // prepare CD buffer\r
 835         if (PicoAHW & PAHW_MCD) PicoCDBufferInit();\r
 836 \r
 837         // calc vsync offset to sync timing code with vsync\r
 838         if (currentConfig.EmuOpt&0x2000) {\r
 839                 gettimeofday(&tval, 0);\r
 840                 gp2x_video_wait_vsync();\r
 841                 gettimeofday(&tval, 0);\r
 842                 vsync_offset = tval.tv_usec;\r
 843                 while (vsync_offset >= target_frametime)\r
 844                         vsync_offset -= target_frametime;\r
 845                 if (!vsync_offset) vsync_offset++;\r
 846                 printf("vsync_offset: %i\n", vsync_offset);\r
 847         } else\r
 848                 vsync_offset = 0;\r
 849 \r
 850         frames_done = frames_shown = thissec =\r
 851         pframes_done = pframes_shown = pthissec = 0;\r
 852 \r
 853         // loop\r
 854         while (engineState == PGS_Running)\r
 855         {\r
 856                 int modes;\r
 857 \r
 858                 gettimeofday(&tval, 0);\r
 859                 if (reset_timing) {\r
 860                         reset_timing = 0;\r
 861                         pthissec = tval.tv_sec;\r
 862                         pframes_shown = pframes_done = tval.tv_usec/target_frametime;\r
 863                 }\r
 864 \r
 865                 // show notice message?\r
 866                 if (noticeMsgTime.tv_sec)\r
 867                 {\r
 868                         static int noticeMsgSum;\r
 869                         if((tval.tv_sec*1000000+tval.tv_usec) - (noticeMsgTime.tv_sec*1000000+noticeMsgTime.tv_usec) > 2000000) { // > 2.0 sec\r
 870                                 noticeMsgTime.tv_sec = noticeMsgTime.tv_usec = 0;\r
 871                                 clearArea(0);\r
 872                                 notice = 0;\r
 873                         } else {\r
 874                                 int sum = noticeMsg[0]+noticeMsg[1]+noticeMsg[2];\r
 875                                 if (sum != noticeMsgSum) { clearArea(0); noticeMsgSum = sum; }\r
 876                                 notice = noticeMsg;\r
 877                         }\r
 878                 }\r
 879 \r
 880                 // check for mode changes\r
 881                 modes = ((Pico.video.reg[12]&1)<<2)|(Pico.video.reg[1]&8);\r
 882                 if (modes != oldmodes)\r
 883                 {\r
 884                         int scalex = 320;\r
 885                         osd_fps_x = OSD_FPS_X;\r
 886                         if (modes & 4) {\r
 887                                 vidCpyM2 = vidCpyM2_40col;\r
 888                         } else {\r
 889                                 if (PicoOpt & 0x100) {\r
 890                                         vidCpyM2 = vidCpyM2_32col_nobord;\r
 891                                         scalex = 256;\r
 892                                         osd_fps_x = OSD_FPS_X - 64;\r
 893                                 } else {\r
 894                                         vidCpyM2 = vidCpyM2_32col;\r
 895                                 }\r
 896                         }\r
 897                         /* want vertical scaling and game is not in 240 line mode */\r
 898                         if (currentConfig.scaling == EOPT_SCALE_HW_HV && !(modes&8))\r
 899                              gp2x_video_RGB_setscaling(8, scalex, 224);\r
 900                         else gp2x_video_RGB_setscaling(0, scalex, 240);\r
 901                         oldmodes = modes;\r
 902                         clearArea(1);\r
 903                 }\r
 904 \r
 905                 // second changed?\r
 906                 if (thissec != tval.tv_sec)\r
 907                 {\r
 908 #ifdef BENCHMARK\r
 909                         static int bench = 0, bench_fps = 0, bench_fps_s = 0, bfp = 0, bf[4];\r
 910                         if (++bench == 10) {\r
 911                                 bench = 0;\r
 912                                 bench_fps_s = bench_fps;\r
 913                                 bf[bfp++ & 3] = bench_fps;\r
 914                                 bench_fps = 0;\r
 915                         }\r
 916                         bench_fps += frames_shown;\r
 917                         sprintf(fpsbuff, "%02i/%02i/%02i", frames_shown, bench_fps_s, (bf[0]+bf[1]+bf[2]+bf[3])>>2);\r
 918 #else\r
 919                         if (currentConfig.EmuOpt & 2) {\r
 920                                 sprintf(fpsbuff, "%02i/%02i", frames_shown, frames_done);\r
 921                                 if (fpsbuff[5] == 0) { fpsbuff[5] = fpsbuff[6] = ' '; fpsbuff[7] = 0; }\r
 922                         }\r
 923 #endif\r
 924                         frames_shown = frames_done = 0;\r
 925                         thissec = tval.tv_sec;\r
 926                 }\r
 927 #ifdef PFRAMES\r
 928                 sprintf(fpsbuff, "%i", Pico.m.frame_count);\r
 929 #endif\r
 930 \r
 931                 if (pthissec != tval.tv_sec)\r
 932                 {\r
 933                         if (PsndOut == 0 && currentConfig.Frameskip >= 0) {\r
 934                                 pframes_done = pframes_shown = 0;\r
 935                         } else {\r
 936                                 // it is quite common for this implementation to leave 1 fame unfinished\r
 937                                 // when second changes, but we don't want buffer to starve.\r
 938                                 if(PsndOut && pframes_done < target_fps && pframes_done > target_fps-5) {\r
 939                                         updateKeys();\r
 940                                         SkipFrame(1); pframes_done++;\r
 941                                 }\r
 942 \r
 943                                 pframes_done  -= target_fps; if (pframes_done  < 0) pframes_done  = 0;\r
 944                                 pframes_shown -= target_fps; if (pframes_shown < 0) pframes_shown = 0;\r
 945                                 if (pframes_shown > pframes_done) pframes_shown = pframes_done;\r
 946                         }\r
 947                         pthissec = tval.tv_sec;\r
 948                 }\r
 949 \r
 950                 lim_time = (pframes_done+1) * target_frametime + vsync_offset;\r
 951                 if (currentConfig.Frameskip >= 0) // frameskip enabled\r
 952                 {\r
 953                         for(i = 0; i < currentConfig.Frameskip; i++) {\r
 954                                 updateKeys();\r
 955                                 SkipFrame(1); pframes_done++; frames_done++;\r
 956                                 if (PsndOut && !reset_timing) { // do framelimitting if sound is enabled\r
 957                                         gettimeofday(&tval, 0);\r
 958                                         if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 959                                         if (tval.tv_usec < lim_time) { // we are too fast\r
 960                                                 simpleWait(pthissec, lim_time);\r
 961                                         }\r
 962                                 }\r
 963                                 lim_time += target_frametime;\r
 964                         }\r
 965                 }\r
 966                 else if (tval.tv_usec > lim_time) // auto frameskip\r
 967                 {\r
 968                         // no time left for this frame - skip\r
 969                         if (tval.tv_usec - lim_time >= 300000) {\r
 970                                 /* something caused a slowdown for us (disk access? cache flush?)\r
 971                                  * try to recover by resetting timing... */\r
 972                                 reset_timing = 1;\r
 973                                 continue;\r
 974                         }\r
 975                         updateKeys();\r
 976                         SkipFrame(tval.tv_usec < lim_time+target_frametime*2); pframes_done++; frames_done++;\r
 977                         continue;\r
 978                 }\r
 979 \r
 980                 updateKeys();\r
 981                 PicoFrame();\r
 982 \r
 983                 // check time\r
 984                 gettimeofday(&tval, 0);\r
 985                 if (pthissec != tval.tv_sec) tval.tv_usec+=1000000;\r
 986 \r
 987                 if (currentConfig.Frameskip < 0 && tval.tv_usec - lim_time >= 300000) // slowdown detection\r
 988                         reset_timing = 1;\r
 989                 else if (PsndOut != NULL || currentConfig.Frameskip < 0)\r
 990                 {\r
 991                         // sleep or vsync if we are still too fast\r
 992                         // usleep sleeps for ~20ms minimum, so it is not a solution here\r
 993                         if (!reset_timing && tval.tv_usec < lim_time)\r
 994                         {\r
 995                                 // we are too fast\r
 996                                 if (vsync_offset) {\r
 997                                         if (lim_time - tval.tv_usec > target_frametime/2)\r
 998                                                 simpleWait(pthissec, lim_time - target_frametime/4);\r
 999                                         gp2x_video_wait_vsync();\r
1000                                 } else {\r
1001                                         simpleWait(pthissec, lim_time);\r
1002                                 }\r
1003                         }\r
1004                 }\r
1005 \r
1006                 blit(fpsbuff, notice);\r
1007 \r
1008                 pframes_done++; pframes_shown++;\r
1009                  frames_done++;  frames_shown++;\r
1010         }\r
1011 \r
1012         emu_changeFastForward(0);\r
1013 \r
1014         if (PicoAHW & PAHW_MCD) PicoCDBufferFree();\r
1015 \r
1016         // save SRAM\r
1017         if((currentConfig.EmuOpt & 1) && SRam.changed) {\r
1018                 emu_state_cb("Writing SRAM/BRAM..");\r
1019                 emu_SaveLoadGame(0, 1);\r
1020                 SRam.changed = 0;\r
1021         }\r
1022 \r
1023         // if in 8bit mode, generate 16bit image for menu background\r
1024         if ((PicoOpt&0x10) || !(currentConfig.EmuOpt&0x80))\r
1025                 emu_forcedFrame(POPT_EN_SOFTSCALE);\r
1026 }\r
1027 \r
1028 \r
1029 void emu_ResetGame(void)\r
1030 {\r
1031         PicoReset();\r
1032         reset_timing = 1;\r
1033 }\r
1034 \r
1035 const char *plat_get_credits(void)\r
1036 {\r
1037         return "PicoDrive v" VERSION " (c) notaz, 2006-2009\n\n\n"\r
1038                 "Credits:\n"\r
1039                 "fDave: Cyclone 68000 core,\n"\r
1040                 "      base code of PicoDrive\n"\r
1041                 "Reesy & FluBBa: DrZ80 core\n"\r
1042                 "MAME devs: YM2612 and SN76496 cores\n"\r
1043                 "rlyeh and others: minimal SDK\n"\r
1044                 "Squidge: mmuhack\n"\r
1045                 "Dzz: ARM940 sample\n"\r
1046                 "GnoStiC / Puck2099: USB joy code\n"\r
1047                 "craigix: GP2X hardware\n"\r
1048                 "ketchupgun: skin design\n"\r
1049                 "\n"\r
1050                 "special thanks (for docs, ideas):\n"\r
1051                 " Charles MacDonald, Haze,\n"\r
1052                 " Stephane Dallongeville,\n"\r
1053                 " Lordus, Exophase, Rokas,\n"\r
1054                 " Nemesis, Tasco Deluxe";\r
1055 }\r