fce.c

   1 /* FCE Ultra - NES/Famicom Emulator
   2  *
   3  * Copyright notice for this file:
   4  *  Copyright (C) 1998 BERO
   5  *  Copyright (C) 2002 Ben Parnell
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include        <string.h>
  23 #include        <stdio.h>
  24 #include        <stdlib.h>
  25
  26 #include        "types.h"
  27 #include        "x6502.h"
  28 #include        "fce.h"
  29 #include        "fceu098.h"
  30 #include        "sound.h"
  31 #include        "svga.h"
  32 #include        "netplay.h"
  33 #include        "general.h"
  34 #include        "endian.h"
  35 #include        "version.h"
  36 #include        "memory.h"
  37
  38 #include        "cart.h"
  39 #include        "nsf.h"
  40 #include        "fds.h"
  41 #include        "ines.h"
  42 #include        "unif.h"
  43 #include        "vsuni.h"
  44 #include        "cheat.h"
  45
  46 #include        "state.h"
  47 #include        "video.h"
  48 #include        "input.h"
  49 #include        "file.h"
  50 #include        "crc32.h"
  51 #include        "ppu.h"
  52
  53 #include        "palette.h"
  54 #include        "movie.h"
  55
  56 #include        "dprintf.h"
  57
  58 #ifdef GP2X
  59 #include        "drivers/gp2x/asmutils.h"
  60 #endif
  61
  62 #define Pal     (PALRAM)
  63
  64
  65 static void (*RefreshLine)(uint8 *P, uint32 vofs) = NULL;
  66 static void PRefreshLine(void);
  67
  68 static void ResetPPU(void);
  69 static void PowerPPU(void);
  70
  71 uint64 timestampbase=0;
  72
  73 int ppudead=1;
  74 int kook=0;
  75
  76 int MMC5Hack;
  77 uint32 MMC5HackVROMMask;
  78 uint8 *MMC5HackExNTARAMPtr;
  79 uint8 *MMC5HackVROMPTR;
  80 uint8 MMC5HackCHRMode=0;
  81 uint8 MMC5HackSPMode;
  82 uint8 MMC5HackSPScroll;
  83 uint8 MMC5HackSPPage;
  84
  85 uint8 *MMC5SPRVPage[8];
  86 uint8 *MMC5BGVPage[8];
  87
  88
  89 uint8 VRAMBuffer,PPUGenLatch;
  90
  91 uint8 *vnapage[4];
  92 uint8 PPUNTARAM;
  93 uint8 PPUCHRRAM;
  94
  95 /* Color deemphasis emulation.  Joy... */
  96 static uint8 deemp=0;
  97 static int deempcnt[8];
  98
  99 FCEUGI FCEUGameInfo;
 100 void (*GameInterface)(int h, void *param);
 101
 102 void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
 103
 104 void (*GameStateRestore)(int version);
 105 void (*GameHBIRQHook)(void), (*GameHBIRQHook2)(void);
 106
 107 readfunc ARead[0x10000];
 108 writefunc BWrite[0x10000];
 109 static readfunc *AReadG;
 110 static writefunc *BWriteG;
 111 static int RWWrap=0;
 112
 113 #ifdef ASM_6502
 114 static void asmcpu_update(int32 cycles)
 115 {
 116  // some code from x6502.c
 117  fhcnt-=cycles;
 118  if(fhcnt<=0)
 119  {
 120   FrameSoundUpdate();
 121   fhcnt+=fhinc;
 122  }
 123
 124  if(PCMIRQCount>0)
 125  {
 126   PCMIRQCount-=cycles;
 127   if(PCMIRQCount<=0)
 128   {
 129    vdis=1;
 130    if((PSG[0x10]&0x80) && !(PSG[0x10]&0x40))
 131    {
 132     extern uint8 SIRQStat;
 133     SIRQStat|=0x80;
 134     X6502_IRQBegin(FCEU_IQDPCM);
 135    }
 136   }
 137  }
 138 }
 139
 140 void asmcpu_unpack(void)
 141 {
 142         nes_registers[0] = X.A << 24;
 143         nes_registers[1] = X.X;
 144         nes_registers[2] = X.Y;
 145         pc_base = 0;
 146         nes_registers[3] = X.PC;
 147         X6502_Rebase_a();
 148         nes_registers[4] = X.S << 24;
 149         nes_registers[4]|= X.IRQlow << 8;
 150         if (MapIRQHook)
 151                 nes_registers[4] |= 1<<16; // MapIRQHook set bit
 152         nes_registers[7] = (uint32)X.count << 16;
 153
 154         // NVUB DIZC
 155         nes_registers[4]|= X.P & 0x5d;
 156         nes_registers[5] = X.P << 24; // N
 157         if (!(X.P&0x02)) nes_registers[5] |= 1; // Z
 158 }
 159
 160 void asmcpu_pack(void)
 161 {
 162         X.A = nes_registers[0] >> 24;
 163         X.X = nes_registers[1];
 164         X.Y = nes_registers[2];
 165         X.PC= nes_registers[3] - pc_base;
 166         X.S = nes_registers[4] >> 24;
 167         X.IRQlow = nes_registers[4] >> 8;
 168         X.count = (int32) nes_registers[7] >> 16;
 169
 170         // NVUB DIZC
 171         X.P = nes_registers[4] & 0x5d;
 172         if (  nes_registers[5]&0x80000000)  X.P |= 0x80; // N
 173         if (!(nes_registers[5]&0x000000ff)) X.P |= 0x02; // Z
 174 }
 175 #endif
 176
 177 DECLFW(BNull)
 178 {
 179
 180 }
 181
 182 DECLFR(ANull)
 183 {
 184  return(X.DB);
 185 }
 186
 187 int AllocGenieRW(void)
 188 {
 189  if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc))))
 190   return 0;
 191  if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc))))
 192   return 0;
 193  RWWrap=1;
 194  return 1;
 195 }
 196
 197 void FlushGenieRW(void)
 198 {
 199  int32 x;
 200
 201  if(RWWrap)
 202  {
 203   for(x=0;x<0x8000;x++)
 204   {
 205    ARead[x+0x8000]=AReadG[x];
 206    BWrite[x+0x8000]=BWriteG[x];
 207   }
 208 #ifdef ASM_6502
 209   GenieSetPages(1);
 210 #endif
 211   free(AReadG);
 212   free(BWriteG);
 213   AReadG=0;
 214   BWriteG=0;
 215   RWWrap=0;
 216  }
 217 }
 218
 219 readfunc FASTAPASS(1) GetReadHandler(int32 a)
 220 {
 221   if(a>=0x8000 && RWWrap)
 222    return AReadG[a-0x8000];
 223   else
 224    return ARead[a];
 225 }
 226
 227 void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func)
 228 {
 229   int32 x;
 230
 231   if(!func)
 232    func=ANull;
 233
 234   if(RWWrap)
 235    for(x=end;x>=start;x--)
 236    {
 237     if(x>=0x8000)
 238      AReadG[x-0x8000]=func;
 239     else
 240      ARead[x]=func;
 241    }
 242   else
 243
 244    for(x=end;x>=start;x--)
 245     ARead[x]=func;
 246 }
 247
 248 writefunc FASTAPASS(1) GetWriteHandler(int32 a)
 249 {
 250   if(RWWrap && a>=0x8000)
 251    return BWriteG[a-0x8000];
 252   else
 253    return BWrite[a];
 254 }
 255
 256 void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func)
 257 {
 258   int32 x;
 259
 260   if(!func)
 261    func=BNull;
 262
 263   if(RWWrap)
 264    for(x=end;x>=start;x--)
 265    {
 266     if(x>=0x8000)
 267      BWriteG[x-0x8000]=func;
 268     else
 269      BWrite[x]=func;
 270    }
 271   else
 272    for(x=end;x>=start;x--)
 273     BWrite[x]=func;
 274 }
 275
 276 uint8 vtoggle=0;
 277 uint8 XOffset=0;
 278
 279 uint32 TempAddr,RefreshAddr;
 280
 281
 282 /* scanline is equal to the current visible scanline we're on. */
 283
 284 int scanline;
 285
 286 uint8 GameMemBlock[131072] __attribute__ ((aligned (4)));
 287 uint8 NTARAM[0x800] __attribute__ ((aligned (4)));
 288 uint8 PALRAM[0x20] __attribute__ ((aligned (4)));
 289 #if !defined(ASM_6502) || defined(DEBUG_ASM_6502)
 290 uint8 RAM[0x800] __attribute__ ((aligned (4)));
 291 #endif
 292
 293 uint8 PPU[4];
 294 uint8 PPUSPL;
 295
 296 uint8 PAL=0;
 297
 298
 299 #define MMC5BGVRAMADR(V)      &MMC5BGVPage[(V)>>10][(V)]
 300 #define VRAMADR(V)      &VPage[(V)>>10][(V)]
 301
 302 static int linestartts;
 303 static int tofix=0;
 304
 305 static uint8 *Plinef;
 306
 307 extern uint8 sprlinebuf[256+8];
 308 extern int32 sphitx;
 309 extern uint8 sphitdata;
 310
 311 extern int spork;       /* spork the world.  Any sprites on this line?
 312                            Then this will be set to 1.  Needed for zapper
 313                            emulation and *gasp* sprite emulation.
 314                         */
 315
 316 static void ResetRL(uint8 *target)
 317 {
 318  if(InputScanlineHook)
 319   InputScanlineHook(0,0,0,0);
 320  Plinef=target;
 321  linestartts=timestamp*48+X6502_GetCycleCount();
 322  tofix=1;
 323 }
 324
 325 static INLINE void Fixit1(void);
 326
 327 /* faking FCEUPPU_LineUpdate() from later versions of the emu */
 328 static void FakedLineUpdate(void)
 329 {
 330  #define TOFIXNUM (272-0x4)
 331  int lastpixel;
 332
 333  if (scanline >= 240) return;
 334
 335  if (tofix || sphitx != 0x100)
 336  {
 337   lastpixel = (timestamp*48-linestartts)>>4;
 338   if (PAL) lastpixel += lastpixel>>4;
 339   //printf("lastpixel: %i\n", lastpixel);
 340  }
 341
 342  if (tofix && lastpixel>=TOFIXNUM)
 343  {
 344   Fixit1();
 345   tofix=0;
 346  }
 347
 348  // CheckSpriteHit()
 349  if(sphitx!=0x100)
 350  {
 351   int l=lastpixel-16;
 352   int x;
 353
 354   for(x=sphitx;x<(sphitx+8) && x<l;x++)
 355   {
 356    if((sphitdata&(0x80>>(x-sphitx))) && !(Plinef[x]&64))
 357    {
 358     PPU_status|=0x40;
 359     sphitx=0x100;
 360     break;
 361    }
 362   }
 363  }
 364 }
 365
 366
 367 static DECLFW(BRAML)
 368 {
 369         RAM[A]=V;
 370 }
 371
 372 static DECLFW(BRAMH)
 373 {
 374         RAM[A&0x7FF]=V;
 375 }
 376
 377 static DECLFR(ARAML)
 378 {
 379         return RAM[A];
 380 }
 381
 382 static DECLFR(ARAMH)
 383 {
 384         return RAM[A&0x7FF];
 385 }
 386
 387
 388 static DECLFR(A2002)
 389 {
 390         /* merged */
 391                         uint8 ret;
 392
 393                         FakedLineUpdate();
 394                         ret = PPU_status;
 395                         ret|=PPUGenLatch&0x1F;
 396                         vtoggle=0;
 397                         PPU_status&=0x7F;
 398                          PPUGenLatch=ret;
 399                         //dprintf("r [2002] %02x",ret);
 400                         return ret;
 401 }
 402
 403 static DECLFR(A200x)
 404 {
 405         /* merged */
 406                         FakedLineUpdate();
 407                         return PPUGenLatch;
 408 }
 409
 410 static DECLFR(A2007)
 411 {
 412         /* merged */
 413                         uint8 ret;
 414                         uint32 tmp=RefreshAddr&0x3FFF;
 415
 416                         FakedLineUpdate();
 417
 418                         ret=VRAMBuffer;
 419
 420                         if(PPU_hook) PPU_hook(tmp);
 421                         PPUGenLatch=VRAMBuffer;
 422                         if(tmp<0x2000)
 423                         {
 424                          VRAMBuffer=VPage[tmp>>10][tmp];
 425                         }
 426                         else
 427                         {
 428                          VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
 429                         }
 430
 431                         if (INC32) RefreshAddr+=32;
 432                         else RefreshAddr++;
 433                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 434                         dprintf("r [2007] %02x",ret);
 435                         return ret;
 436 }
 437
 438 static DECLFW(B2000)
 439 {
 440         /* NMI2? */
 441                 FakedLineUpdate();
 442                 PPUGenLatch=V;
 443                 PPU[0]=V;
 444                 TempAddr&=0xF3FF;
 445                 TempAddr|=(V&3)<<10;
 446 }
 447
 448 static DECLFW(B2001)
 449 {
 450         /* merged */
 451                   FakedLineUpdate();
 452                   PPUGenLatch=V;
 453                   PPU[1]=V;
 454                   if(V&0xE0)
 455                    deemp=V>>5;
 456                   //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
 457 }
 458
 459 static DECLFW(B2002)
 460 {
 461         /* merged */
 462                  PPUGenLatch=V;
 463 }
 464
 465 static DECLFW(B2003)
 466 {
 467         /* merged */
 468                 PPUGenLatch=V;
 469                 PPU[3]=V;
 470                 PPUSPL=V&0x7;
 471 }
 472
 473 static DECLFW(B2004)
 474 {
 475         /* merged */
 476                 PPUGenLatch=V;
 477                 if(PPUSPL>=8)
 478                 {
 479                  if(PPU[3]>=8)
 480                   SPRAM[PPU[3]]=V;
 481                 }
 482                 else
 483                 {
 484                  //printf("$%02x:$%02x\n",PPUSPL,V);
 485                  SPRAM[PPUSPL]=V;
 486                 }
 487                 PPU[3]++;
 488                 PPUSPL++;
 489
 490 }
 491
 492 static DECLFW(B2005)
 493 {
 494         /* merged */
 495                 uint32 tmp=TempAddr;
 496                 FakedLineUpdate();
 497                 PPUGenLatch=V;
 498                 if (!vtoggle)
 499                 {
 500                  tmp&=0xFFE0;
 501                  tmp|=V>>3;
 502                  XOffset=V&7;
 503                 }
 504                 else
 505                 {
 506                  tmp&=0x8C1F;
 507                  tmp|=((V&~0x7)<<2);
 508                  tmp|=(V&7)<<12;
 509                 }
 510
 511                 TempAddr=tmp;
 512                 vtoggle^=1;
 513 }
 514
 515 static DECLFW(B2006)
 516 {
 517         /* merged */
 518                        FakedLineUpdate();
 519
 520                        PPUGenLatch=V;
 521                        if(!vtoggle)
 522                        {
 523                         TempAddr&=0x00FF;
 524                         TempAddr|=(V&0x3f)<<8;
 525                        }
 526                        else
 527                        {
 528                         TempAddr&=0xFF00;
 529                         TempAddr|=V;
 530
 531                         RefreshAddr=TempAddr;
 532                         if(PPU_hook)
 533                          PPU_hook(RefreshAddr);
 534                        }
 535                       vtoggle^=1;
 536 }
 537
 538 static DECLFW(B2007)
 539 {
 540         /* merged */
 541                         uint32 tmp=RefreshAddr&0x3FFF;
 542                         PPUGenLatch=V;
 543                         if(tmp>=0x3F00)
 544                         {
 545                          // hmmm....
 546                          if(!(tmp&0xf))
 547                           PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3f;
 548                          else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
 549                         }
 550                         else if(tmp<0x2000)
 551                         {
 552                           if(PPUCHRRAM&(1<<(tmp>>10)))
 553                             VPage[tmp>>10][tmp]=V;
 554                         }
 555                         else
 556                         {
 557                          if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
 558                           vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
 559                         }
 560                         if (INC32) RefreshAddr+=32;
 561                         else RefreshAddr++;
 562                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 563 }
 564
 565 static DECLFW(B4014)
 566 {
 567         uint32 t=V<<8;
 568         int x;
 569
 570         for(x=0;x<256;x++)
 571          B2004(0x2004,X.DB=ARead[t+x](t+x));
 572         X6502_AddCycles(512);
 573 }
 574
 575 void BGRender(uint8 *target)
 576 {
 577         uint32 tem, vofs;
 578         vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 579
 580         Pal[0]|=64;
 581         Pal[4]|=64;
 582         Pal[8]|=64;
 583         Pal[0xC]|=64;
 584         RefreshLine(target-XOffset, vofs);
 585         Pal[0]&=63;
 586         Pal[4]&=63;
 587         Pal[8]&=63;
 588         Pal[0xC]&=63;
 589
 590         if(!(PPU[1]&2))
 591         {
 592          tem=Pal[0]|0x40;
 593          tem|=tem<<8;
 594          tem|=tem<<16;
 595          *(uint32 *)target=*(uint32 *)(target+4)=tem;
 596         }
 597 }
 598
 599 #ifdef FRAMESKIP
 600 int FSkip=0;
 601 void FCEUI_FrameSkip(int x)
 602 {
 603  FSkip=x;
 604 }
 605 #endif
 606
 607 /*      This is called at the beginning of each visible scanline */
 608 static void LineUpdate(uint8 *target)
 609 {
 610         uint32 tem;
 611         int y;
 612
 613         /* PRefreshLine() will not get called on skipped frames.  This
 614          * could cause a problem, but the solution would be rather complex,
 615          * due to the current sprite 0 hit code.
 616          */
 617         if(FSkip)
 618         {
 619          y=(int)SPRAM[0] + 1;
 620          if(scanline==y && SpriteON) PPU_status|=0x40; // hack
 621          return;
 622         }
 623
 624         if(scanline < FSettings.FirstSLine || scanline > FSettings.LastSLine)
 625         {
 626            if(PPU_hook)
 627             PRefreshLine();
 628            y=(int)SPRAM[0] + 1;
 629            if(scanline==y && SpriteON) PPU_status|=0x40;
 630         }
 631         else
 632         {
 633          if(ScreenON)
 634          {
 635            BGRender(target);
 636          }
 637          else
 638          {
 639            tem=Pal[0]|0x40;
 640            tem|=tem << 8;
 641            tem|=tem << 16;
 642            FCEU_dwmemset(target,tem,256);
 643          }
 644         }
 645
 646         if(InputScanlineHook)
 647          InputScanlineHook(target,spork?sprlinebuf:0,linestartts,256);
 648 }
 649
 650
 651 static void LineUpdateEnd(uint8 *target)
 652 {
 653 #ifdef GP2X
 654  if(ScreenON || SpriteON)  // Yes, very el-cheapo.
 655  {
 656   if(PPU[1]&0x01)
 657    block_and(target, 256, 0x30);
 658  }
 659  if((PPU[1]>>5)==0x7)
 660   block_or(target, 256, 0xc0);
 661  else if(PPU[1]&0xE0)
 662   block_or(target, 256, 0x40);
 663  else
 664   block_andor(target, 256, 0x3f, 0x80);
 665 #else
 666  int x;
 667
 668  if(ScreenON || SpriteON)  // Yes, very el-cheapo.
 669  {
 670   if(PPU[1]&0x01)
 671   {
 672    for(x=63;x>=0;x--)
 673    *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x30303030;
 674   }
 675  }
 676  if((PPU[1]>>5)==0x7)
 677  {
 678   for(x=63;x>=0;x--)
 679    *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0xc0c0c0c0;
 680  }
 681  else if(PPU[1]&0xE0)
 682   for(x=63;x>=0;x--)
 683    *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0x40404040;
 684  else
 685   for(x=63;x>=0;x--)
 686    *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x80808080;
 687 #endif
 688
 689  // black borders
 690  ((uint32 *)target)[-2]=((uint32 *)target)[-1]=0;
 691  ((uint32 *)target)[64]=((uint32 *)target)[65]=0;
 692 }
 693
 694 #define PAL(c)  ((c)+cc)
 695
 696
 697 static void PRefreshLine(void)
 698 {
 699          uint32 vofs;
 700          int X1;
 701          vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 702          void (*PPU_hook_)(uint32 A) = PPU_hook;
 703
 704
 705          for(X1=33;X1;X1--)
 706          {
 707                 uint32 zz2;
 708                 uint32 vadr;
 709
 710                 zz2=(RefreshAddr>>10)&3;
 711                 PPU_hook_(0x2000|(RefreshAddr&0xFFF));
 712
 713                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 714
 715                 PPU_hook_(vadr);
 716
 717                 if((RefreshAddr&0x1f)==0x1f)
 718                  RefreshAddr^=0x41F;
 719                 else
 720                  RefreshAddr++;
 721          }
 722 }
 723
 724 /* This high-level graphics MMC5 emulation code was written
 725    for MMC5 carts in "CL" mode.  It's probably not totally
 726    correct for carts in "SL" mode.
 727    */
 728 static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
 729 {
 730           int8 tochange, X1;
 731
 732           tochange=MMC5HackSPMode&0x1F;
 733
 734           for(X1=33;X1;X1--,P+=8)
 735           {
 736                 uint8 *C;
 737                 uint8 cc,zz,zz2;
 738                 uint32 vadr;
 739
 740                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 741                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 742                 {
 743                  uint8 xs,ys;
 744
 745                  xs=33-X1;
 746                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 747                  if(ys>=0x1E) ys-=0x1E;
 748                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 749
 750                  C = MMC5HackVROMPTR+vadr;
 751                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 752
 753                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 754                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 755                 }
 756                 else
 757                 {
 758                  zz=RefreshAddr&0x1F;
 759                  zz2=(RefreshAddr>>10)&3;
 760                  vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 761                  C = MMC5BGVRAMADR(vadr);
 762                  cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 763                  cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 764                 }
 765                 #include "fceline.h"
 766
 767                 if((RefreshAddr&0x1f)==0x1f)
 768                  RefreshAddr^=0x41F;
 769                 else
 770                  RefreshAddr++;
 771                 tochange--;
 772           }
 773 }
 774
 775 static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
 776 {
 777           int8 tochange, X1;
 778
 779           tochange=MMC5HackSPMode&0x1F;
 780
 781           for(X1=33;X1;X1--,P+=8)
 782           {
 783                 uint8 *C;
 784                 uint8 cc;
 785                 uint8 zz2;
 786                 uint32 vadr;
 787
 788                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 789                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 790                 {
 791                  uint8 xs,ys;
 792
 793                  xs=33-X1;
 794                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 795                  if(ys>=0x1E) ys-=0x1E;
 796                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 797
 798                  C = MMC5HackVROMPTR+vadr;
 799                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 800
 801                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 802                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 803                 }
 804                 else
 805                 {
 806                  C=MMC5HackVROMPTR;
 807                  zz2=(RefreshAddr>>10)&3;
 808                  vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 809                  C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 810                          MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 811                  vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 812                  cc = vadr;
 813                 }
 814                 #include "fceline.h"
 815                 if((RefreshAddr&0x1f)==0x1f)
 816                  RefreshAddr^=0x41F;
 817                 else
 818                  RefreshAddr++;
 819                 tochange--;
 820           }
 821 }
 822
 823 static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
 824 {
 825           int8 X1;
 826
 827           for(X1=33;X1;X1--,P+=8)
 828           {
 829                 uint8 *C;
 830                 uint8 cc;
 831                 uint8 zz2;
 832                 uint32 vadr;
 833
 834                 C=MMC5HackVROMPTR;
 835                 zz2=(RefreshAddr>>10)&3;
 836                 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 837                 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 838                         MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 839                 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 840                 cc = vadr;
 841
 842                 #include "fceline.h"
 843                 if((RefreshAddr&0x1f)==0x1f)
 844                  RefreshAddr^=0x41F;
 845                 else
 846                  RefreshAddr++;
 847           }
 848 }
 849
 850 static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
 851 {
 852           int8 X1;
 853
 854           for(X1=33;X1;X1--,P+=8)
 855           {
 856                 uint8 *C;
 857                 uint8 cc,zz,zz2;
 858                 uint32 vadr;
 859
 860                 zz=RefreshAddr&0x1F;
 861                 zz2=(RefreshAddr>>10)&3;
 862                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 863                 C = MMC5BGVRAMADR(vadr);
 864                 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 865                 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 866
 867                 #include "fceline.h"
 868
 869                 if((RefreshAddr&0x1f)==0x1f)
 870                  RefreshAddr^=0x41F;
 871                 else
 872                  RefreshAddr++;
 873           }
 874 }
 875
 876 static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
 877 {
 878          int8 X1;
 879          void (*PPU_hook_)(uint32 A) = PPU_hook;
 880          uint32 rfraddr = RefreshAddr;
 881          uint8 *page = vnapage[(rfraddr>>10)&3];
 882
 883          for(X1=33;X1;X1--,P+=8)
 884          {
 885                 uint8 *C;
 886                 uint8 cc,zz;
 887                 uint32 vadr;
 888
 889                 zz=rfraddr&0x1F;
 890                 PPU_hook_(0x2000|(rfraddr&0xFFF));
 891                 cc=page[0x3c0+(zz>>2)+((rfraddr&0x380)>>4)];
 892                 cc=((cc >> ((zz&2) + ((rfraddr&0x40)>>4))) &3) <<2;
 893                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 894                 C = VRAMADR(vadr);
 895
 896                 #include "fceline.h"
 897
 898                 PPU_hook_(vadr);
 899
 900                 if((rfraddr&0x1f)==0x1f) {
 901                  rfraddr^=0x41F;
 902                  page = vnapage[(rfraddr>>10)&3];
 903                 } else
 904                  rfraddr++;
 905          }
 906          RefreshAddr = rfraddr;
 907 }
 908
 909 static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
 910 {
 911          int8 X1;
 912          uint32 rfraddr = RefreshAddr;
 913          uint8 *page = vnapage[(rfraddr>>10)&3];
 914          uint32 cc2=0;
 915
 916          if ((rfraddr&0xc)!=0)
 917           cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 918
 919          for (X1=33;X1;X1--,P+=8)
 920          {
 921                 uint8 cc,*C;
 922                 uint32 vadr;
 923
 924                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 925                 C = VRAMADR(vadr);
 926                 if ((rfraddr&0xc)==0)
 927                  cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 928                 cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
 929
 930                 #include "fceline.h"
 931
 932                 if((rfraddr&0x1f)==0x1f) {
 933                  rfraddr^=0x41F;
 934                  page = vnapage[(rfraddr>>10)&3];
 935                 } else
 936                  rfraddr++;
 937          }
 938          RefreshAddr = rfraddr;
 939 }
 940
 941 static void SetRefreshLine(void)
 942 {
 943         if(MMC5Hack && geniestage!=1)
 944         {
 945          if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
 946          {
 947                  if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
 948                  RefreshLine = RefreshLine_MMC5Hack1;
 949          }
 950          else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
 951          {
 952                 if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
 953                  RefreshLine = RefreshLine_MMC5Hack2;
 954          }
 955          else if(MMC5HackCHRMode==1)
 956          {
 957                 if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
 958                  RefreshLine = RefreshLine_MMC5Hack3;
 959          }
 960          else
 961          {
 962                 if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
 963                  RefreshLine = RefreshLine_MMC5Hack4;
 964          }
 965         }       // End if(MMC5Hack)
 966         else if(PPU_hook)
 967         {
 968                 if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
 969                 RefreshLine = RefreshLine_PPU_hook;
 970         }
 971         else
 972         {
 973                 if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
 974                 RefreshLine = RefreshLine_normal;
 975         }
 976 }
 977
 978 static INLINE
 979 void Fixit2(void)
 980 {
 981    if(ScreenON || SpriteON)
 982    {
 983     uint32 rad=RefreshAddr;
 984     rad&=0xFBE0;
 985     rad|=TempAddr&0x041f;
 986     RefreshAddr=rad;
 987     //PPU_hook(RefreshAddr,-1);
 988    }
 989 }
 990
 991 static INLINE
 992 void Fixit1(void)
 993 {
 994    if(ScreenON || SpriteON)
 995    {
 996     uint32 rad=RefreshAddr;
 997
 998     if((rad&0x7000)==0x7000)
 999     {
1000      rad^=0x7000;
1001      if((rad&0x3E0)==0x3A0)
1002      {
1003       rad^=0x3A0;
1004       rad^=0x800;
1005      }
1006      else
1007      {
1008       if((rad&0x3E0)==0x3e0)
1009        rad^=0x3e0;
1010       else rad+=0x20;
1011      }
1012     }
1013     else
1014      rad+=0x1000;
1015     RefreshAddr=rad;
1016     //PPU_hook(RefreshAddr,-1);
1017    }
1018 }
1019
1020
1021 // ============================//
1022 // end of new code
1023 // ===========================//
1024
1025 void ResetMapping(void)
1026 {
1027         int x;
1028
1029         SetReadHandler(0x0000,0xFFFF,ANull);
1030         SetWriteHandler(0x0000,0xFFFF,BNull);
1031
1032         SetReadHandler(0,0x7FF,ARAML);
1033         SetWriteHandler(0,0x7FF,BRAML);
1034
1035         SetReadHandler(0x800,0x1FFF,ARAMH);  /* Part of a little */
1036         SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
1037
1038         for(x=0x2000;x<0x4000;x+=8)
1039         {
1040          ARead[x]=A200x;
1041          BWrite[x]=B2000;
1042          ARead[x+1]=A200x;
1043          BWrite[x+1]=B2001;
1044          ARead[x+2]=A2002;
1045          BWrite[x+2]=B2002;
1046          ARead[x+3]=A200x;
1047          BWrite[x+3]=B2003;
1048          ARead[x+4]=A200x;
1049          BWrite[x+4]=B2004;
1050          ARead[x+5]=A200x;
1051          BWrite[x+5]=B2005;
1052          ARead[x+6]=A200x;
1053          BWrite[x+6]=B2006;
1054          ARead[x+7]=A2007;
1055          BWrite[x+7]=B2007;
1056         }
1057
1058         BWrite[0x4014]=B4014;
1059         SetNESSoundMap();
1060         InitializeInput();
1061 }
1062
1063 int GameLoaded=0;
1064 void CloseGame(void)
1065 {
1066  FCEUI_StopMovie();
1067  if(GameLoaded)
1068  {
1069   if(FCEUGameInfo.type!=GIT_NSF)
1070    FCEU_FlushGameCheats(0,0);
1071   #ifdef NETWORK
1072   if(FSettings.NetworkPlay) KillNetplay();
1073   #endif
1074   GameInterface(GI_CLOSE, 0);
1075   CloseGenie();
1076   GameLoaded=0;
1077  }
1078 }
1079
1080 void ResetGameLoaded(void)
1081 {
1082         if(GameLoaded) CloseGame();
1083         GameStateRestore=0;
1084         PPU_hook=0;
1085         GameHBIRQHook=GameHBIRQHook2=0;
1086         GameExpSound.Fill=0;
1087         GameExpSound.RChange=0;
1088         if(GameExpSound.Kill)
1089          GameExpSound.Kill();
1090         GameExpSound.Kill=0;
1091         MapIRQHook=0;
1092         MMC5Hack=0;
1093         PAL&=1;
1094         pale=0;
1095
1096         FCEUGameInfo.name=0;
1097         FCEUGameInfo.type=GIT_CART;
1098         FCEUGameInfo.vidsys=GIV_USER;
1099         FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
1100         FCEUGameInfo.inputfc=-1;
1101
1102         FCEUGameInfo.soundchan=0;
1103         FCEUGameInfo.soundrate=0;
1104         FCEUGameInfo.cspecial=0;
1105 }
1106
1107 char lastLoadedGameName [2048];
1108 int LoadGameLastError = 0;
1109 int UNIFLoad(const char *name, int fp);
1110 int iNESLoad(const char *name, int fp);
1111 int FDSLoad(const char *name, int fp);
1112 int NSFLoad(int fp);
1113
1114 FCEUGI *FCEUI_LoadGame(char *name)
1115 {
1116         char name2[512];
1117         int have_movie = 0, have_ips = 0;
1118         int fp;
1119
1120         //Exit=1;
1121         LoadGameLastError = 0;
1122         ResetGameLoaded();
1123
1124         strncpy(name2, name, sizeof(name2));
1125         name2[sizeof(name2)-1] = 0;
1126
1127         fp=FCEU_fopen(name2,"rb");
1128         if(!fp)
1129         {
1130          FCEU_PrintError("Error opening \"%s\"!",name);
1131          LoadGameLastError = 1;
1132          return 0;
1133         }
1134
1135         {
1136          char *p = name2 + strlen(name2) - 4;
1137          if (strcasecmp(p, ".fcm") == 0) printf("movie detected\n"), have_movie = 1;
1138          if (strcasecmp(p, ".ips") == 0) printf("ips detected\n"), have_ips = 1;
1139          if (have_movie || have_ips)
1140          {
1141           // movie detected
1142           FCEU_fclose(fp);
1143           *p = 0;
1144           fp=FCEU_fopen(name2,"rb");
1145           if (!fp && p - name2 > 2)
1146           {
1147            for (p--; p > name2 && *p != '.'; p--);
1148            *p = 0;
1149            fp=FCEU_fopen(name2,"rb");
1150           }
1151           if (!fp) {
1152            printf("no ROM for ips/movie\n");
1153            LoadGameLastError = 2;
1154            return 0;
1155           }
1156          }
1157         }
1158
1159         // do IPS patch
1160         if (have_ips)
1161         {
1162          FCEU_fclose(fp);
1163          FILE *ips = fopen(name, "rb");
1164          if (!ips) return 0;
1165          fp=FCEU_fopen_forcemem(name2);
1166          if (!fp) { fclose(ips); return 0; }
1167          ApplyIPS(ips, fp); // closes ips
1168         }
1169
1170         GetFileBase(name2);
1171         if(iNESLoad(name2,fp))
1172          goto endlseq;
1173         if(NSFLoad(fp))
1174          goto endlseq;
1175         if(FDSLoad(name2,fp))
1176          goto endlseq;
1177         if(UNIFLoad(name2,fp))
1178          goto endlseq;
1179
1180         FCEU_PrintError("An error occurred while loading the file.");
1181         FCEU_fclose(fp);
1182         // format handlers may set LoadGameLastError themselves.
1183         if (LoadGameLastError == 0) LoadGameLastError = 3;
1184         return 0;
1185
1186         endlseq:
1187         FCEU_fclose(fp);
1188         GameLoaded=1;
1189
1190         FCEU_ResetVidSys();
1191         if(FCEUGameInfo.type!=GIT_NSF)
1192          if(FSettings.GameGenie)
1193           OpenGenie();
1194
1195         PowerNES();
1196         #ifdef NETWORK
1197         if(FSettings.NetworkPlay) InitNetplay();
1198         #endif
1199         SaveStateRefresh();
1200         if(FCEUGameInfo.type!=GIT_NSF)
1201         {
1202          FCEU_LoadGamePalette();
1203          FCEU_LoadGameCheats(0);
1204         }
1205
1206         FCEU_ResetPalette();
1207         Exit=0;
1208
1209         if (have_movie)
1210                 FCEUI_LoadMovie(name, 1);
1211
1212         strcpy(lastLoadedGameName, name2);
1213
1214         return(&FCEUGameInfo);
1215 }
1216
1217
1218 void FCEU_ResetVidSys(void)
1219 {
1220  int w;
1221
1222  if(FCEUGameInfo.vidsys==GIV_NTSC)
1223   w=0;
1224  else if(FCEUGameInfo.vidsys==GIV_PAL)
1225   w=1;
1226  else
1227   w=FSettings.PAL;
1228
1229  if(w)
1230  {
1231   PAL=1;
1232   FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1233   FSettings.LastSLine=FSettings.UsrLastSLine[1];
1234  }
1235  else
1236  {
1237   PAL=0;
1238   FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1239   FSettings.LastSLine=FSettings.UsrLastSLine[0];
1240  }
1241  printf("ResetVidSys: PAL = %i\n", PAL);
1242  SetSoundVariables();
1243 }
1244
1245 int FCEUI_Initialize(void)
1246 {
1247         if(!InitVirtualVideo())
1248          return 0;
1249         memset(&FSettings,0,sizeof(FSettings));
1250         FSettings.UsrFirstSLine[0]=8;
1251         FSettings.UsrFirstSLine[1]=0;
1252         FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
1253         FSettings.SoundVolume=100;
1254
1255         FCEUI_Initialize098();
1256         FCEUI_SetEmuMode(0);
1257
1258         return 1;
1259 }
1260
1261 void FCEUI_Kill(void)
1262 {
1263  FCEU_KillGenie();
1264 }
1265
1266 static void EmLoop(void);
1267
1268 int use098code = 0;
1269 void (*ResetNES)(void) = 0;
1270 void (*PowerNES)(void) = 0;
1271 void (*FCEUI_Emulate)(void) = 0;
1272
1273 void FCEUI_SetEmuMode(int is_new)
1274 {
1275    use098code = is_new;
1276    if (is_new)
1277    {
1278     ResetNES=ResetNES098;
1279     PowerNES=PowerNES098;
1280     FCEUI_Emulate=FCEUI_Emulate098;
1281    }
1282    else
1283    {
1284     ResetNES=ResetNES081;
1285     PowerNES=PowerNES081;
1286     FCEUI_Emulate=EmLoop;
1287    }
1288 }
1289
1290 void MMC5_hb(int);     /* Ugh ugh ugh. */
1291 static void DoLine(void)
1292 {
1293    uint8 *target=XBuf+scanline*320+32;
1294
1295    LineUpdate(target);
1296
1297    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1298
1299    X6502_Run(256);
1300
1301    // check: Battletoads & Double Dragon, Addams Family
1302    // sky glitches in SMB1 if done wrong
1303    FakedLineUpdate();
1304
1305 #ifdef FRAMESKIP
1306    if(!FSkip)
1307 #endif
1308    if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
1309    {
1310     if(SpriteON && spork)
1311      CopySprites(target);
1312
1313     LineUpdateEnd(target);
1314    }
1315    sphitx=0x100;
1316
1317    if(ScreenON || SpriteON)
1318     FetchSpriteData();
1319
1320    // DoHBlank();
1321    if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
1322    {
1323     X6502_Run(6);
1324     Fixit2();
1325     X6502_Run(4);
1326     GameHBIRQHook();
1327     X6502_Run(85-10-16);
1328    }
1329    else
1330    {
1331     X6502_Run(6);  // Tried 65, caused problems with Slalom(maybe others)
1332     Fixit2();
1333     X6502_Run(85-6-16);
1334    }
1335
1336    if(SpriteON)
1337     RefreshSprites();
1338    if(GameHBIRQHook2 && (ScreenON || SpriteON))
1339     GameHBIRQHook2();
1340    scanline++;
1341    if (scanline<240)
1342     ResetRL(XBuf+scanline*320+32);
1343    X6502_Run(16);
1344 }
1345
1346
1347 static void EmLoop(void)
1348 {
1349  for(;;)
1350  {
1351   int x;
1352   uint32 scanlines_per_frame = PAL ? 312 : 262;
1353   UpdateInput();
1354   FCEU_ApplyPeriodicCheats();
1355
1356   // FCEUPPU_Loop:
1357   if(ppudead) /* Needed for Knight Rider, possibly others. */
1358   {
1359    //memset(XBuf, 0, 320*240);
1360    //X6502_Run(scanlines_per_frame*(256+85));
1361    int lines;
1362    for (lines=scanlines_per_frame;lines;lines--)
1363      X6502_Run(256+85);
1364    ppudead--;
1365    goto update;
1366   }
1367
1368   X6502_Run(256+85);
1369
1370   PPU[2]|=0x80;
1371   PPU[3]=PPUSPL=0;             /* Not sure if this is correct.  According
1372                                   to Matt Conte and my own tests, it is.  Timing is probably
1373                                   off, though.  NOTE:  Not having this here
1374                                   breaks a Super Donkey Kong game. */
1375
1376   X6502_Run(12);                /* I need to figure out the true nature and length
1377                                    of this delay.
1378                                 */
1379   if(FCEUGameInfo.type==GIT_NSF)
1380    DoNSFFrame();
1381   else if(VBlankON)
1382    TriggerNMI();
1383
1384   // Note: this is needed for asm core
1385   // Warning: using 'scanline' var here breaks Castlevania III
1386   {
1387    int lines;
1388    X6502_Run(256+85-12);
1389    for (lines=scanlines_per_frame-242-1;lines;lines--)
1390      X6502_Run(256+85);
1391   }
1392   // X6502_Run((scanlines_per_frame-242)*(256+85)-12);
1393   PPU_status&=0x1f;
1394   X6502_Run(256);
1395
1396   {
1397    if(ScreenON || SpriteON)
1398    {
1399     if(GameHBIRQHook)
1400      GameHBIRQHook();
1401      if(PPU_hook)
1402       for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} // ugh
1403     if(GameHBIRQHook2)
1404      GameHBIRQHook2();
1405    }
1406
1407    X6502_Run(85-16);
1408
1409    if(ScreenON || SpriteON)
1410    {
1411     RefreshAddr=TempAddr;
1412     if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1413    }
1414    spork=0;
1415    ResetRL(XBuf+32);
1416
1417    X6502_Run(16-kook);
1418    kook ^= 1;
1419   }
1420
1421   if(FCEUGameInfo.type==GIT_NSF)
1422   {
1423    // run scanlines for asm core to fuction
1424    for(scanline=0;scanline<240;scanline++)
1425     X6502_Run(256+85);
1426   }
1427   else
1428   {
1429    int x,max,maxref;
1430
1431    deemp=PPU[1]>>5;
1432    SetRefreshLine();
1433    for(scanline=0;scanline<240;)       // scanline is incremented in  DoLine.  Evil. :/
1434    {
1435     deempcnt[deemp]++;
1436     DoLine();
1437    }
1438    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1439    for(x=1,max=0,maxref=0;x<7;x++)
1440    {
1441     if(deempcnt[x]>max)
1442     {
1443      max=deempcnt[x];
1444      maxref=x;
1445     }
1446     deempcnt[x]=0;
1447    }
1448    SetNESDeemph(maxref,0);
1449   }
1450
1451 update:
1452   if(Exit)
1453   {
1454    //CloseGame();
1455    break;
1456   }
1457
1458   {
1459    int ssize;
1460
1461    ssize=FlushEmulateSound();
1462
1463    timestampbase += timestamp;
1464    timestamp = 0;
1465
1466    #ifdef FRAMESKIP
1467    if(FSkip)
1468    {
1469     FCEU_PutImageDummy();
1470     FSkip--;
1471     FCEUD_Update(0,WaveFinalMono,ssize);
1472    }
1473    else
1474    #endif
1475    {
1476     FCEU_PutImage();
1477     FCEUD_Update(XBuf+8,WaveFinalMono,ssize);
1478    }
1479   }
1480
1481  } // for
1482 }
1483
1484 void FCEUI_CloseGame(void)
1485 {
1486         Exit=1;
1487 }
1488
1489 static void ResetPPU(void)
1490 {
1491         VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1492         PPUSPL=0;
1493         PPUGenLatch=0;
1494         RefreshAddr=TempAddr=0;
1495         vtoggle = 0;
1496         ppudead = 2;
1497         kook = 0;
1498 }
1499
1500 static void PowerPPU(void)
1501 {
1502         memset(NTARAM,0x00,0x800);
1503         memset(PALRAM,0x00,0x20);
1504         memset(SPRAM,0x00,0x100);
1505         ResetPPU();
1506 }
1507
1508 void ResetNES081(void)
1509 {
1510         if(!GameLoaded) return;
1511         GameInterface(GI_RESETM2, 0);
1512         ResetSound();
1513         ResetPPU();
1514         X6502_Reset();
1515 }
1516
1517 static void FCEU_MemoryRand(uint8 *ptr, uint32 size)
1518 {
1519  int x=0;
1520  while(size)
1521  {
1522   *ptr=(x&4)?0xFF:0x00;
1523   x++;
1524   size--;
1525   ptr++;
1526  }
1527 }
1528
1529 void PowerNES081(void)
1530 {
1531         if(!GameLoaded) return;
1532
1533         FCEU_CheatResetRAM();
1534         FCEU_CheatAddRAM(2,0,RAM);
1535
1536         GeniePower();
1537
1538 #ifndef DEBUG_ASM_6502
1539         FCEU_MemoryRand(RAM,0x800);
1540 #else
1541         memset(RAM,0x00,0x800);
1542 #endif
1543         ResetMapping();
1544         PowerSound();
1545         PowerPPU();
1546         GameInterface(GI_POWER, 0);
1547         if(FCEUGameInfo.type==GIT_VSUNI)
1548          FCEU_VSUniPower();
1549 #ifdef ASM_6502
1550         if (geniestage)
1551          GenieSetPages(0);
1552 #endif
1553         timestampbase=0;
1554         X6502_Power();
1555         FCEU_PowerCheats();
1556 }
1557
1558
1559 /* savestate stuff */
1560 uint16 TempAddrT,RefreshAddrT;
1561
1562 SFORMAT FCEUPPU_STATEINFO[]={
1563  { NTARAM, 0x800, "NTAR"},
1564  { PALRAM, 0x20, "PRAM"},
1565  { SPRAM, 0x100, "SPRA"},
1566  { PPU, 0x4, "PPUR"},
1567  { &XOffset, 1, "XOFF"},
1568  { &vtoggle, 1, "VTOG"},
1569  { &RefreshAddrT, 2|RLSB, "RADD"},
1570  { &TempAddrT, 2|RLSB, "TADD"},
1571  { &VRAMBuffer, 1, "VBUF"},
1572  { &PPUGenLatch, 1, "PGEN"},
1573  // from 0.98.15
1574  { &kook, 1, "KOOK"},
1575  { &ppudead, 1, "DEAD"},
1576  { &PPUSPL, 1, "PSPL"},
1577  { 0 }
1578  };
1579
1580