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        "sound.h"
  30 #include        "svga.h"
  31 #include        "netplay.h"
  32 #include        "general.h"
  33 #include        "endian.h"
  34 #include        "version.h"
  35 #include        "memory.h"
  36
  37 #include        "cart.h"
  38 #include        "nsf.h"
  39 #include        "fds.h"
  40 #include        "ines.h"
  41 #include        "unif.h"
  42 #include        "cheat.h"
  43
  44 #include        "state.h"
  45 #include        "video.h"
  46 #include        "input.h"
  47 #include        "file.h"
  48 #include        "crc32.h"
  49 #include        "ppu.h"
  50
  51 #include        "palette.h"
  52 #include        "movie.h"
  53
  54 #include        "dprintf.h"
  55
  56 #ifdef GP2X
  57 #include        "drivers/gp2x/asmutils.h"
  58 #endif
  59
  60 #define Pal     (PALRAM)
  61
  62
  63 static void (*RefreshLine)(uint8 *P, uint32 vofs) = NULL;
  64 static void PRefreshLine(void);
  65
  66 static void ResetPPU(void);
  67 static void PowerPPU(void);
  68
  69 uint64 timestampbase=0;
  70
  71 static int ppudead=1;
  72 static int kook=0;
  73
  74 int MMC5Hack;
  75 uint32 MMC5HackVROMMask;
  76 uint8 *MMC5HackExNTARAMPtr;
  77 uint8 *MMC5HackVROMPTR;
  78 uint8 MMC5HackCHRMode=0;
  79 uint8 MMC5HackSPMode;
  80 uint8 MMC5HackSPScroll;
  81 uint8 MMC5HackSPPage;
  82
  83 uint8 *MMC5SPRVPage[8];
  84 uint8 *MMC5BGVPage[8];
  85
  86
  87 uint8 VRAMBuffer,PPUGenLatch;
  88
  89 uint8 *vnapage[4];
  90 uint8 PPUNTARAM;
  91 uint8 PPUCHRRAM;
  92
  93 /* Color deemphasis emulation.  Joy... */
  94 static uint8 deemp=0;
  95 static int deempcnt[8];
  96
  97 FCEUGI FCEUGameInfo;
  98 void (*GameInterface)(int h, void *param);
  99
 100 void FP_FASTAPASS(1) (*PPU_hook)(uint32 A);
 101
 102 void (*GameStateRestore)(int version);
 103 void (*GameHBIRQHook)(void), (*GameHBIRQHook2)(void);
 104
 105 readfunc ARead[0x10000];
 106 writefunc BWrite[0x10000];
 107 static readfunc *AReadG;
 108 static writefunc *BWriteG;
 109 static int RWWrap=0;
 110
 111 #ifdef ASM_6502
 112 static void asmcpu_update(int32 cycles)
 113 {
 114  // some code from x6502.c
 115  fhcnt-=cycles;
 116  if(fhcnt<=0)
 117  {
 118   FrameSoundUpdate();
 119   fhcnt+=fhinc;
 120  }
 121
 122  if(PCMIRQCount>0)
 123  {
 124   PCMIRQCount-=cycles;
 125   if(PCMIRQCount<=0)
 126   {
 127    vdis=1;
 128    if((PSG[0x10]&0x80) && !(PSG[0x10]&0x40))
 129    {
 130     extern uint8 SIRQStat;
 131     SIRQStat|=0x80;
 132     X6502_IRQBegin(FCEU_IQDPCM);
 133    }
 134   }
 135  }
 136 }
 137
 138 void asmcpu_unpack(void)
 139 {
 140         nes_registers[0] = X.A << 24;
 141         nes_registers[1] = X.X;
 142         nes_registers[2] = X.Y;
 143         pc_base = 0;
 144         nes_registers[3] = X.PC;
 145         X6502_Rebase_a();
 146         nes_registers[4] = X.S << 24;
 147         nes_registers[4]|= X.IRQlow << 8;
 148         nes_registers[7] = (uint32)X.count << 16;
 149
 150         // NVUB DIZC
 151         nes_registers[4]|= X.P & 0x5d;
 152         nes_registers[5] = X.P << 24; // N
 153         if (!(X.P&0x02)) nes_registers[5] |= 1; // Z
 154 }
 155
 156 void asmcpu_pack(void)
 157 {
 158         X.A = nes_registers[0] >> 24;
 159         X.X = nes_registers[1];
 160         X.Y = nes_registers[2];
 161         X.PC= nes_registers[3] - pc_base;
 162         X.S = nes_registers[4] >> 24;
 163         X.IRQlow = nes_registers[4] >> 8;
 164         X.count = (int32) nes_registers[7] >> 16;
 165
 166         // NVUB DIZC
 167         X.P = nes_registers[4] & 0x5d;
 168         if (  nes_registers[5]&0x80000000)  X.P |= 0x80; // N
 169         if (!(nes_registers[5]&0x000000ff)) X.P |= 0x02; // Z
 170 }
 171 #endif
 172
 173 DECLFW(BNull)
 174 {
 175
 176 }
 177
 178 DECLFR(ANull)
 179 {
 180  return(X.DB);
 181 }
 182
 183 int AllocGenieRW(void)
 184 {
 185  if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc))))
 186   return 0;
 187  if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc))))
 188   return 0;
 189  RWWrap=1;
 190  return 1;
 191 }
 192
 193 void FlushGenieRW(void)
 194 {
 195  int32 x;
 196
 197  if(RWWrap)
 198  {
 199   for(x=0;x<0x8000;x++)
 200   {
 201    ARead[x+0x8000]=AReadG[x];
 202    BWrite[x+0x8000]=BWriteG[x];
 203   }
 204 #ifdef ASM_6502
 205   GenieSetPages(1);
 206 #endif
 207   free(AReadG);
 208   free(BWriteG);
 209   AReadG=0;
 210   BWriteG=0;
 211   RWWrap=0;
 212  }
 213 }
 214
 215 readfunc FASTAPASS(1) GetReadHandler(int32 a)
 216 {
 217   if(a>=0x8000 && RWWrap)
 218    return AReadG[a-0x8000];
 219   else
 220    return ARead[a];
 221 }
 222
 223 void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func)
 224 {
 225   int32 x;
 226
 227   if(!func)
 228    func=ANull;
 229
 230   if(RWWrap)
 231    for(x=end;x>=start;x--)
 232    {
 233     if(x>=0x8000)
 234      AReadG[x-0x8000]=func;
 235     else
 236      ARead[x]=func;
 237    }
 238   else
 239
 240    for(x=end;x>=start;x--)
 241     ARead[x]=func;
 242 }
 243
 244 writefunc FASTAPASS(1) GetWriteHandler(int32 a)
 245 {
 246   if(RWWrap && a>=0x8000)
 247    return BWriteG[a-0x8000];
 248   else
 249    return BWrite[a];
 250 }
 251
 252 void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func)
 253 {
 254   int32 x;
 255
 256   if(!func)
 257    func=BNull;
 258
 259   if(RWWrap)
 260    for(x=end;x>=start;x--)
 261    {
 262     if(x>=0x8000)
 263      BWriteG[x-0x8000]=func;
 264     else
 265      BWrite[x]=func;
 266    }
 267   else
 268    for(x=end;x>=start;x--)
 269     BWrite[x]=func;
 270 }
 271
 272 uint8 vtoggle=0;
 273 uint8 XOffset=0;
 274
 275 uint32 TempAddr,RefreshAddr;
 276
 277
 278 /* scanline is equal to the current visible scanline we're on. */
 279
 280 int scanline;
 281
 282 uint8 GameMemBlock[131072] __attribute__ ((aligned (4)));
 283 uint8 NTARAM[0x800] __attribute__ ((aligned (4)));
 284 uint8 PALRAM[0x20] __attribute__ ((aligned (4)));
 285 #if !defined(ASM_6502) || defined(DEBUG_ASM_6502)
 286 uint8 RAM[0x800] __attribute__ ((aligned (4)));
 287 #endif
 288
 289 uint8 PPU[4];
 290 uint8 PPUSPL;
 291
 292 uint8 PAL=0;
 293
 294
 295 #define MMC5BGVRAMADR(V)      &MMC5BGVPage[(V)>>10][(V)]
 296 #define VRAMADR(V)      &VPage[(V)>>10][(V)]
 297
 298 static int linestartts;
 299 static int tofix=0;
 300
 301 static uint8 *Plinef;
 302
 303 extern uint8 sprlinebuf[256+8];
 304 extern int32 sphitx;
 305 extern uint8 sphitdata;
 306
 307 extern int spork;       /* spork the world.  Any sprites on this line?
 308                            Then this will be set to 1.  Needed for zapper
 309                            emulation and *gasp* sprite emulation.
 310                         */
 311
 312 static void ResetRL(uint8 *target)
 313 {
 314  if(InputScanlineHook)
 315   InputScanlineHook(0,0,0,0);
 316  Plinef=target;
 317  linestartts=timestamp*48+X6502_GetCycleCount();
 318  tofix=1;
 319 }
 320
 321 static INLINE void Fixit1(void);
 322
 323 /* faking FCEUPPU_LineUpdate() from later versions of the emu */
 324 static void FakedLineUpdate(void)
 325 {
 326  #define TOFIXNUM (272-0x4)
 327  int lastpixel;
 328
 329  if (scanline >= 240) return;
 330
 331  if (tofix || sphitx != 0x100)
 332  {
 333   lastpixel = (timestamp*48-linestartts)>>4;
 334   if (PAL) lastpixel += lastpixel>>4;
 335   //printf("lastpixel: %i\n", lastpixel);
 336  }
 337
 338  if (tofix && lastpixel>=TOFIXNUM)
 339  {
 340   Fixit1();
 341   tofix=0;
 342  }
 343
 344  // CheckSpriteHit()
 345  if(sphitx!=0x100)
 346  {
 347   int l=lastpixel-16;
 348   int x;
 349
 350   for(x=sphitx;x<(sphitx+8) && x<l;x++)
 351   {
 352    if((sphitdata&(0x80>>(x-sphitx))) && !(Plinef[x]&64))
 353    {
 354     PPU_status|=0x40;
 355     sphitx=0x100;
 356     break;
 357    }
 358   }
 359  }
 360 }
 361
 362
 363 static DECLFW(BRAML)
 364 {
 365         RAM[A]=V;
 366 }
 367
 368 static DECLFW(BRAMH)
 369 {
 370         RAM[A&0x7FF]=V;
 371 }
 372
 373 static DECLFR(ARAML)
 374 {
 375         return RAM[A];
 376 }
 377
 378 static DECLFR(ARAMH)
 379 {
 380         return RAM[A&0x7FF];
 381 }
 382
 383
 384 static DECLFR(A2002)
 385 {
 386         /* merged */
 387                         uint8 ret;
 388
 389                         FakedLineUpdate();
 390                         ret = PPU_status;
 391                         ret|=PPUGenLatch&0x1F;
 392                         vtoggle=0;
 393                         PPU_status&=0x7F;
 394                          PPUGenLatch=ret;
 395                         //dprintf("r [2002] %02x",ret);
 396                         return ret;
 397 }
 398
 399 static DECLFR(A200x)
 400 {
 401         /* merged */
 402                         FakedLineUpdate();
 403                         return PPUGenLatch;
 404 }
 405
 406 static DECLFR(A2007)
 407 {
 408         /* merged */
 409                         uint8 ret;
 410                         uint32 tmp=RefreshAddr&0x3FFF;
 411
 412                         FakedLineUpdate();
 413
 414                         ret=VRAMBuffer;
 415
 416                         if(PPU_hook) PPU_hook(tmp);
 417                         PPUGenLatch=VRAMBuffer;
 418                         if(tmp<0x2000)
 419                         {
 420                          VRAMBuffer=VPage[tmp>>10][tmp];
 421                         }
 422                         else
 423                         {
 424                          VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
 425                         }
 426
 427                         if (INC32) RefreshAddr+=32;
 428                         else RefreshAddr++;
 429                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 430                         dprintf("r [2007] %02x",ret);
 431                         return ret;
 432 }
 433
 434 static DECLFW(B2000)
 435 {
 436         /* NMI2? */
 437                 FakedLineUpdate();
 438                 PPUGenLatch=V;
 439                 PPU[0]=V;
 440                 TempAddr&=0xF3FF;
 441                 TempAddr|=(V&3)<<10;
 442 }
 443
 444 static DECLFW(B2001)
 445 {
 446         /* merged */
 447                   FakedLineUpdate();
 448                   PPUGenLatch=V;
 449                   PPU[1]=V;
 450                   if(V&0xE0)
 451                    deemp=V>>5;
 452                   //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
 453 }
 454
 455 static DECLFW(B2002)
 456 {
 457         /* merged */
 458                  PPUGenLatch=V;
 459 }
 460
 461 static DECLFW(B2003)
 462 {
 463         /* merged */
 464                 PPUGenLatch=V;
 465                 PPU[3]=V;
 466                 PPUSPL=V&0x7;
 467 }
 468
 469 static DECLFW(B2004)
 470 {
 471         /* merged */
 472                 PPUGenLatch=V;
 473                 if(PPUSPL>=8)
 474                 {
 475                  if(PPU[3]>=8)
 476                   SPRAM[PPU[3]]=V;
 477                 }
 478                 else
 479                 {
 480                  //printf("$%02x:$%02x\n",PPUSPL,V);
 481                  SPRAM[PPUSPL]=V;
 482                 }
 483                 PPU[3]++;
 484                 PPUSPL++;
 485
 486 }
 487
 488 static DECLFW(B2005)
 489 {
 490         /* merged */
 491                 uint32 tmp=TempAddr;
 492                 FakedLineUpdate();
 493                 PPUGenLatch=V;
 494                 if (!vtoggle)
 495                 {
 496                  tmp&=0xFFE0;
 497                  tmp|=V>>3;
 498                  XOffset=V&7;
 499                 }
 500                 else
 501                 {
 502                  tmp&=0x8C1F;
 503                  tmp|=((V&~0x7)<<2);
 504                  tmp|=(V&7)<<12;
 505                 }
 506
 507                 TempAddr=tmp;
 508                 vtoggle^=1;
 509 }
 510
 511 static DECLFW(B2006)
 512 {
 513         /* merged */
 514                        FakedLineUpdate();
 515
 516                        PPUGenLatch=V;
 517                        if(!vtoggle)
 518                        {
 519                         TempAddr&=0x00FF;
 520                         TempAddr|=(V&0x3f)<<8;
 521                        }
 522                        else
 523                        {
 524                         TempAddr&=0xFF00;
 525                         TempAddr|=V;
 526
 527                         RefreshAddr=TempAddr;
 528                         if(PPU_hook)
 529                          PPU_hook(RefreshAddr);
 530                        }
 531                       vtoggle^=1;
 532 }
 533
 534 static DECLFW(B2007)
 535 {
 536         /* merged */
 537                         uint32 tmp=RefreshAddr&0x3FFF;
 538                         PPUGenLatch=V;
 539                         if(tmp>=0x3F00)
 540                         {
 541                          // hmmm....
 542                          if(!(tmp&0xf))
 543                           PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3f;
 544                          else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
 545                         }
 546                         else if(tmp<0x2000)
 547                         {
 548                           if(PPUCHRRAM&(1<<(tmp>>10)))
 549                             VPage[tmp>>10][tmp]=V;
 550                         }
 551                         else
 552                         {
 553                          if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
 554                           vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
 555                         }
 556                         if (INC32) RefreshAddr+=32;
 557                         else RefreshAddr++;
 558                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 559 }
 560
 561 static DECLFW(B4014)
 562 {
 563         uint32 t=V<<8;
 564         int x;
 565
 566         for(x=0;x<256;x++)
 567          B2004(0x2004,X.DB=ARead[t+x](t+x));
 568         X6502_AddCycles(512);
 569 }
 570
 571 void BGRender(uint8 *target)
 572 {
 573         uint32 tem, vofs;
 574         vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 575
 576         Pal[0]|=64;
 577         Pal[4]|=64;
 578         Pal[8]|=64;
 579         Pal[0xC]|=64;
 580         RefreshLine(target-XOffset, vofs);
 581         Pal[0]&=63;
 582         Pal[4]&=63;
 583         Pal[8]&=63;
 584         Pal[0xC]&=63;
 585
 586         if(!(PPU[1]&2))
 587         {
 588          tem=Pal[0]|0x40;
 589          tem|=tem<<8;
 590          tem|=tem<<16;
 591          *(uint32 *)target=*(uint32 *)(target+4)=tem;
 592         }
 593 }
 594
 595 #ifdef FRAMESKIP
 596 int FSkip=0;
 597 void FCEUI_FrameSkip(int x)
 598 {
 599  FSkip=x;
 600 }
 601 #endif
 602
 603 /*      This is called at the beginning of each visible scanline */
 604 static void LineUpdate(uint8 *target)
 605 {
 606         uint32 tem;
 607         int y;
 608
 609         /* PRefreshLine() will not get called on skipped frames.  This
 610          * could cause a problem, but the solution would be rather complex,
 611          * due to the current sprite 0 hit code.
 612          */
 613         if(FSkip)
 614         {
 615          y=(int)SPRAM[0] + 1;
 616          if(scanline==y && SpriteON) PPU_status|=0x40; // hack
 617          return;
 618         }
 619
 620         if(scanline < FSettings.FirstSLine || scanline > FSettings.LastSLine)
 621         {
 622            if(PPU_hook)
 623             PRefreshLine();
 624            y=(int)SPRAM[0] + 1;
 625            if(scanline==y && SpriteON) PPU_status|=0x40;
 626         }
 627         else
 628         {
 629          if(ScreenON)
 630          {
 631            BGRender(target);
 632          }
 633          else
 634          {
 635            tem=Pal[0]|0x40;
 636            tem|=tem << 8;
 637            tem|=tem << 16;
 638            FCEU_dwmemset(target,tem,256);
 639          }
 640         }
 641
 642         if(InputScanlineHook)
 643          InputScanlineHook(target,spork?sprlinebuf:0,linestartts,256);
 644 }
 645
 646
 647 static void LineUpdateEnd(uint8 *target)
 648 {
 649 #ifdef GP2X
 650  if(ScreenON || SpriteON)  // Yes, very el-cheapo.
 651  {
 652   if(PPU[1]&0x01)
 653    block_and(target, 256, 0x30);
 654  }
 655  if((PPU[1]>>5)==0x7)
 656   block_or(target, 256, 0xc0);
 657  else if(PPU[1]&0xE0)
 658   block_or(target, 256, 0x40);
 659  else
 660   block_andor(target, 256, 0x3f, 0x80);
 661 #else
 662  int x;
 663
 664  if(ScreenON || SpriteON)  // Yes, very el-cheapo.
 665  {
 666   if(PPU[1]&0x01)
 667   {
 668    for(x=63;x>=0;x--)
 669    *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x30303030;
 670   }
 671  }
 672  if((PPU[1]>>5)==0x7)
 673  {
 674   for(x=63;x>=0;x--)
 675    *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0xc0c0c0c0;
 676  }
 677  else if(PPU[1]&0xE0)
 678   for(x=63;x>=0;x--)
 679    *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0x40404040;
 680  else
 681   for(x=63;x>=0;x--)
 682    *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x80808080;
 683 #endif
 684
 685  // black borders
 686  ((uint32 *)target)[-2]=((uint32 *)target)[-1]=0;
 687  ((uint32 *)target)[64]=((uint32 *)target)[65]=0;
 688 }
 689
 690 #define PAL(c)  ((c)+cc)
 691
 692
 693 static void PRefreshLine(void)
 694 {
 695          uint32 vofs;
 696          int X1;
 697          vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 698          void (*PPU_hook_)(uint32 A) = PPU_hook;
 699
 700
 701          for(X1=33;X1;X1--)
 702          {
 703                 uint32 zz2;
 704                 uint32 vadr;
 705
 706                 zz2=(RefreshAddr>>10)&3;
 707                 PPU_hook_(0x2000|(RefreshAddr&0xFFF));
 708
 709                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 710
 711                 PPU_hook_(vadr);
 712
 713                 if((RefreshAddr&0x1f)==0x1f)
 714                  RefreshAddr^=0x41F;
 715                 else
 716                  RefreshAddr++;
 717          }
 718 }
 719
 720 /* This high-level graphics MMC5 emulation code was written
 721    for MMC5 carts in "CL" mode.  It's probably not totally
 722    correct for carts in "SL" mode.
 723    */
 724 static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
 725 {
 726           int8 tochange, X1;
 727
 728           tochange=MMC5HackSPMode&0x1F;
 729
 730           for(X1=33;X1;X1--,P+=8)
 731           {
 732                 uint8 *C;
 733                 uint8 cc,zz,zz2;
 734                 uint32 vadr;
 735
 736                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 737                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 738                 {
 739                  uint8 xs,ys;
 740
 741                  xs=33-X1;
 742                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 743                  if(ys>=0x1E) ys-=0x1E;
 744                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 745
 746                  C = MMC5HackVROMPTR+vadr;
 747                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 748
 749                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 750                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 751                 }
 752                 else
 753                 {
 754                  zz=RefreshAddr&0x1F;
 755                  zz2=(RefreshAddr>>10)&3;
 756                  vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 757                  C = MMC5BGVRAMADR(vadr);
 758                  cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 759                  cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 760                 }
 761                 #include "fceline.h"
 762
 763                 if((RefreshAddr&0x1f)==0x1f)
 764                  RefreshAddr^=0x41F;
 765                 else
 766                  RefreshAddr++;
 767                 tochange--;
 768           }
 769 }
 770
 771 static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
 772 {
 773           int8 tochange, X1;
 774
 775           tochange=MMC5HackSPMode&0x1F;
 776
 777           for(X1=33;X1;X1--,P+=8)
 778           {
 779                 uint8 *C;
 780                 uint8 cc;
 781                 uint8 zz2;
 782                 uint32 vadr;
 783
 784                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 785                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 786                 {
 787                  uint8 xs,ys;
 788
 789                  xs=33-X1;
 790                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 791                  if(ys>=0x1E) ys-=0x1E;
 792                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 793
 794                  C = MMC5HackVROMPTR+vadr;
 795                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 796
 797                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 798                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 799                 }
 800                 else
 801                 {
 802                  C=MMC5HackVROMPTR;
 803                  zz2=(RefreshAddr>>10)&3;
 804                  vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 805                  C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 806                          MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 807                  vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 808                  cc = vadr;
 809                 }
 810                 #include "fceline.h"
 811                 if((RefreshAddr&0x1f)==0x1f)
 812                  RefreshAddr^=0x41F;
 813                 else
 814                  RefreshAddr++;
 815                 tochange--;
 816           }
 817 }
 818
 819 static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
 820 {
 821           int8 X1;
 822
 823           for(X1=33;X1;X1--,P+=8)
 824           {
 825                 uint8 *C;
 826                 uint8 cc;
 827                 uint8 zz2;
 828                 uint32 vadr;
 829
 830                 C=MMC5HackVROMPTR;
 831                 zz2=(RefreshAddr>>10)&3;
 832                 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 833                 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 834                         MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 835                 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 836                 cc = vadr;
 837
 838                 #include "fceline.h"
 839                 if((RefreshAddr&0x1f)==0x1f)
 840                  RefreshAddr^=0x41F;
 841                 else
 842                  RefreshAddr++;
 843           }
 844 }
 845
 846 static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
 847 {
 848           int8 X1;
 849
 850           for(X1=33;X1;X1--,P+=8)
 851           {
 852                 uint8 *C;
 853                 uint8 cc,zz,zz2;
 854                 uint32 vadr;
 855
 856                 zz=RefreshAddr&0x1F;
 857                 zz2=(RefreshAddr>>10)&3;
 858                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 859                 C = MMC5BGVRAMADR(vadr);
 860                 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 861                 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 862
 863                 #include "fceline.h"
 864
 865                 if((RefreshAddr&0x1f)==0x1f)
 866                  RefreshAddr^=0x41F;
 867                 else
 868                  RefreshAddr++;
 869           }
 870 }
 871
 872 static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
 873 {
 874          int8 X1;
 875          void (*PPU_hook_)(uint32 A) = PPU_hook;
 876          uint32 rfraddr = RefreshAddr;
 877          uint8 *page = vnapage[(rfraddr>>10)&3];
 878
 879          for(X1=33;X1;X1--,P+=8)
 880          {
 881                 uint8 *C;
 882                 uint8 cc,zz;
 883                 uint32 vadr;
 884
 885                 zz=rfraddr&0x1F;
 886                 PPU_hook_(0x2000|(rfraddr&0xFFF));
 887                 cc=page[0x3c0+(zz>>2)+((rfraddr&0x380)>>4)];
 888                 cc=((cc >> ((zz&2) + ((rfraddr&0x40)>>4))) &3) <<2;
 889                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 890                 C = VRAMADR(vadr);
 891
 892                 #include "fceline.h"
 893
 894                 PPU_hook_(vadr);
 895
 896                 if((rfraddr&0x1f)==0x1f) {
 897                  rfraddr^=0x41F;
 898                  page = vnapage[(rfraddr>>10)&3];
 899                 } else
 900                  rfraddr++;
 901          }
 902          RefreshAddr = rfraddr;
 903 }
 904
 905 static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
 906 {
 907          int8 X1;
 908          uint32 rfraddr = RefreshAddr;
 909          uint8 *page = vnapage[(rfraddr>>10)&3];
 910          uint32 cc2=0;
 911
 912          if ((rfraddr&0xc)!=0)
 913           cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 914
 915          for (X1=33;X1;X1--,P+=8)
 916          {
 917                 uint8 cc,*C;
 918                 uint32 vadr;
 919
 920                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 921                 C = VRAMADR(vadr);
 922                 if ((rfraddr&0xc)==0)
 923                  cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 924                 cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
 925
 926                 #include "fceline.h"
 927
 928                 if((rfraddr&0x1f)==0x1f) {
 929                  rfraddr^=0x41F;
 930                  page = vnapage[(rfraddr>>10)&3];
 931                 } else
 932                  rfraddr++;
 933          }
 934          RefreshAddr = rfraddr;
 935 }
 936
 937 static void SetRefreshLine(void)
 938 {
 939         if(MMC5Hack && geniestage!=1)
 940         {
 941          if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
 942          {
 943                  if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
 944                  RefreshLine = RefreshLine_MMC5Hack1;
 945          }
 946          else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
 947          {
 948                 if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
 949                  RefreshLine = RefreshLine_MMC5Hack2;
 950          }
 951          else if(MMC5HackCHRMode==1)
 952          {
 953                 if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
 954                  RefreshLine = RefreshLine_MMC5Hack3;
 955          }
 956          else
 957          {
 958                 if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
 959                  RefreshLine = RefreshLine_MMC5Hack4;
 960          }
 961         }       // End if(MMC5Hack)
 962         else if(PPU_hook)
 963         {
 964                 if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
 965                 RefreshLine = RefreshLine_PPU_hook;
 966         }
 967         else
 968         {
 969                 if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
 970                 RefreshLine = RefreshLine_normal;
 971         }
 972 }
 973
 974 static INLINE
 975 void Fixit2(void)
 976 {
 977    if(ScreenON || SpriteON)
 978    {
 979     uint32 rad=RefreshAddr;
 980     rad&=0xFBE0;
 981     rad|=TempAddr&0x041f;
 982     RefreshAddr=rad;
 983     //PPU_hook(RefreshAddr,-1);
 984    }
 985 }
 986
 987 static INLINE
 988 void Fixit1(void)
 989 {
 990    if(ScreenON || SpriteON)
 991    {
 992     uint32 rad=RefreshAddr;
 993
 994     if((rad&0x7000)==0x7000)
 995     {
 996      rad^=0x7000;
 997      if((rad&0x3E0)==0x3A0)
 998      {
 999       rad^=0x3A0;
1000       rad^=0x800;
1001      }
1002      else
1003      {
1004       if((rad&0x3E0)==0x3e0)
1005        rad^=0x3e0;
1006       else rad+=0x20;
1007      }
1008     }
1009     else
1010      rad+=0x1000;
1011     RefreshAddr=rad;
1012     //PPU_hook(RefreshAddr,-1);
1013    }
1014 }
1015
1016
1017 // ============================//
1018 // end of new code
1019 // ===========================//
1020
1021 void ResetMapping(void)
1022 {
1023         int x;
1024
1025         SetReadHandler(0x0000,0xFFFF,ANull);
1026         SetWriteHandler(0x0000,0xFFFF,BNull);
1027
1028         SetReadHandler(0,0x7FF,ARAML);
1029         SetWriteHandler(0,0x7FF,BRAML);
1030
1031         SetReadHandler(0x800,0x1FFF,ARAMH);  /* Part of a little */
1032         SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
1033
1034         for(x=0x2000;x<0x4000;x+=8)
1035         {
1036          ARead[x]=A200x;
1037          BWrite[x]=B2000;
1038          ARead[x+1]=A200x;
1039          BWrite[x+1]=B2001;
1040          ARead[x+2]=A2002;
1041          BWrite[x+2]=B2002;
1042          ARead[x+3]=A200x;
1043          BWrite[x+3]=B2003;
1044          ARead[x+4]=A200x;
1045          BWrite[x+4]=B2004;
1046          ARead[x+5]=A200x;
1047          BWrite[x+5]=B2005;
1048          ARead[x+6]=A200x;
1049          BWrite[x+6]=B2006;
1050          ARead[x+7]=A2007;
1051          BWrite[x+7]=B2007;
1052         }
1053
1054         BWrite[0x4014]=B4014;
1055         SetNESSoundMap();
1056         InitializeInput();
1057 }
1058
1059 int GameLoaded=0;
1060 void CloseGame(void)
1061 {
1062  FCEUI_StopMovie();
1063  if(GameLoaded)
1064  {
1065   if(FCEUGameInfo.type!=GIT_NSF)
1066    FCEU_FlushGameCheats(0,0);
1067   #ifdef NETWORK
1068   if(FSettings.NetworkPlay) KillNetplay();
1069   #endif
1070   GameInterface(GI_CLOSE, 0);
1071   CloseGenie();
1072   GameLoaded=0;
1073  }
1074 }
1075
1076 void ResetGameLoaded(void)
1077 {
1078         if(GameLoaded) CloseGame();
1079         GameStateRestore=0;
1080         PPU_hook=0;
1081         GameHBIRQHook=GameHBIRQHook2=0;
1082         GameExpSound.Fill=0;
1083         GameExpSound.RChange=0;
1084         if(GameExpSound.Kill)
1085          GameExpSound.Kill();
1086         GameExpSound.Kill=0;
1087         MapIRQHook=0;
1088         MMC5Hack=0;
1089         PAL&=1;
1090         pale=0;
1091
1092         FCEUGameInfo.name=0;
1093         FCEUGameInfo.type=GIT_CART;
1094         FCEUGameInfo.vidsys=GIV_USER;
1095         FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
1096         FCEUGameInfo.inputfc=-1;
1097 }
1098
1099 char lastLoadedGameName [2048];
1100 int LoadGameLastError = 0;
1101 int UNIFLoad(const char *name, int fp);
1102 int iNESLoad(const char *name, int fp);
1103 int FDSLoad(const char *name, int fp);
1104 int NSFLoad(int fp);
1105
1106 FCEUGI *FCEUI_LoadGame(char *name)
1107 {
1108         char name2[512];
1109         int have_movie = 0;
1110         int fp;
1111
1112         //Exit=1;
1113         LoadGameLastError = 0;
1114         ResetGameLoaded();
1115
1116         strncpy(name2, name, sizeof(name2));
1117         name2[sizeof(name2)-1] = 0;
1118
1119         fp=FCEU_fopen(name2,"rb");
1120         if(!fp)
1121         {
1122          FCEU_PrintError("Error opening \"%s\"!",name);
1123          LoadGameLastError = 1;
1124          return 0;
1125         }
1126
1127         {
1128          char *p = name2 + strlen(name2) - 4;
1129          if (strcmp(p, ".fcm") == 0)
1130          {
1131           // movie detected
1132           printf("movie detected\n");
1133           FCEU_fclose(fp);
1134           *p = 0;
1135           fp=FCEU_fopen(name2,"rb");
1136           if (!fp && p - name2 > 2)  p[-2] = 0;
1137           fp=FCEU_fopen(name2,"rb");
1138           if (!fp) {
1139            printf("no ROM for movie\n");
1140            LoadGameLastError = 2;
1141            return 0;
1142           }
1143           have_movie = 1;
1144          }
1145         }
1146
1147         GetFileBase(name2);
1148         if(iNESLoad(name2,fp))
1149          goto endlseq;
1150         if(NSFLoad(fp))
1151          goto endlseq;
1152         if(FDSLoad(name2,fp))
1153          goto endlseq;
1154         if(UNIFLoad(name2,fp))
1155          goto endlseq;
1156
1157         FCEU_PrintError("An error occurred while loading the file.");
1158         FCEU_fclose(fp);
1159         // format handlers may set LoadGameLastError themselves.
1160         if (LoadGameLastError == 0) LoadGameLastError = 3;
1161         return 0;
1162
1163         endlseq:
1164         FCEU_fclose(fp);
1165         GameLoaded=1;
1166
1167         FCEU_ResetVidSys();
1168         if(FCEUGameInfo.type!=GIT_NSF)
1169          if(FSettings.GameGenie)
1170           OpenGenie();
1171
1172         PowerNES();
1173         #ifdef NETWORK
1174         if(FSettings.NetworkPlay) InitNetplay();
1175         #endif
1176         SaveStateRefresh();
1177         if(FCEUGameInfo.type!=GIT_NSF)
1178         {
1179          FCEU_LoadGamePalette();
1180          FCEU_LoadGameCheats(0);
1181         }
1182
1183         FCEU_ResetPalette();
1184         Exit=0;
1185
1186         if (have_movie)
1187                 FCEUI_LoadMovie(name, 1);
1188
1189         strcpy(lastLoadedGameName, name2);
1190
1191         return(&FCEUGameInfo);
1192 }
1193
1194
1195 void FCEU_ResetVidSys(void)
1196 {
1197  int w;
1198
1199  if(FCEUGameInfo.vidsys==GIV_NTSC)
1200   w=0;
1201  else if(FCEUGameInfo.vidsys==GIV_PAL)
1202   w=1;
1203  else
1204   w=FSettings.PAL;
1205
1206  if(w)
1207  {
1208   PAL=1;
1209   FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1210   FSettings.LastSLine=FSettings.UsrLastSLine[1];
1211  }
1212  else
1213  {
1214   PAL=0;
1215   FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1216   FSettings.LastSLine=FSettings.UsrLastSLine[0];
1217  }
1218  printf("ResetVidSys: PAL = %i\n", PAL);
1219  SetSoundVariables();
1220 }
1221
1222 int FCEUI_Initialize(void)
1223 {
1224         if(!InitVirtualVideo())
1225          return 0;
1226         memset(&FSettings,0,sizeof(FSettings));
1227         FSettings.UsrFirstSLine[0]=8;
1228         FSettings.UsrFirstSLine[1]=0;
1229         FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
1230         FSettings.SoundVolume=100;
1231         return 1;
1232 }
1233
1234 void MMC5_hb(int);     /* Ugh ugh ugh. */
1235 static void DoLine(void)
1236 {
1237    uint8 *target=XBuf+scanline*320+32;
1238
1239    LineUpdate(target);
1240
1241    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1242
1243    X6502_Run(256);
1244
1245    // check: Battletoads & Double Dragon, Addams Family
1246    // sky glitches in SMB1 if done wrong
1247    FakedLineUpdate();
1248
1249 #ifdef FRAMESKIP
1250    if(!FSkip)
1251 #endif
1252    if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
1253    {
1254     if(SpriteON && spork)
1255      CopySprites(target);
1256
1257     LineUpdateEnd(target);
1258    }
1259    sphitx=0x100;
1260
1261    if(ScreenON || SpriteON)
1262     FetchSpriteData();
1263
1264    // DoHBlank();
1265    if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
1266    {
1267     X6502_Run(6);
1268     Fixit2();
1269     X6502_Run(4);
1270     GameHBIRQHook();
1271     X6502_Run(85-10-16);
1272    }
1273    else
1274    {
1275     X6502_Run(6);  // Tried 65, caused problems with Slalom(maybe others)
1276     Fixit2();
1277     X6502_Run(85-6-16);
1278    }
1279
1280    if(SpriteON)
1281     RefreshSprites();
1282    if(GameHBIRQHook2 && (ScreenON || SpriteON))
1283     GameHBIRQHook2();
1284    scanline++;
1285    if (scanline<240)
1286     ResetRL(XBuf+scanline*320+32);
1287    X6502_Run(16);
1288 }
1289
1290
1291 void EmLoop(void)
1292 {
1293  for(;;)
1294  {
1295   int x;
1296   uint32 scanlines_per_frame = PAL ? 312 : 262;
1297   UpdateInput();
1298   FCEU_ApplyPeriodicCheats();
1299
1300   // FCEUPPU_Loop:
1301   if(ppudead) /* Needed for Knight Rider, possibly others. */
1302   {
1303    //memset(XBuf, 0, 320*240);
1304    X6502_Run(scanlines_per_frame*(256+85));
1305    ppudead--;
1306    goto update;
1307   }
1308
1309   X6502_Run(256+85);
1310
1311   PPU[2]|=0x80;
1312   PPU[3]=PPUSPL=0;             /* Not sure if this is correct.  According
1313                                   to Matt Conte and my own tests, it is.  Timing is probably
1314                                   off, though.  NOTE:  Not having this here
1315                                   breaks a Super Donkey Kong game. */
1316
1317   X6502_Run(12);                /* I need to figure out the true nature and length
1318                                    of this delay.
1319                                 */
1320   if(FCEUGameInfo.type==GIT_NSF)
1321    DoNSFFrame();
1322   else if(VBlankON)
1323    TriggerNMI();
1324
1325   // Note: this is needed for asm core
1326   // Warning: using 'scanline' var here breaks Castlevania III
1327   {
1328    int lines;
1329    X6502_Run(256+85-12);
1330    for (lines=scanlines_per_frame-242-1;lines;lines--)
1331      X6502_Run(256+85);
1332   }
1333   // X6502_Run((scanlines_per_frame-242)*(256+85)-12);
1334   PPU_status&=0x1f;
1335   X6502_Run(256);
1336
1337   {
1338    if(ScreenON || SpriteON)
1339    {
1340     if(GameHBIRQHook)
1341      GameHBIRQHook();
1342      if(PPU_hook)
1343       for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} // ugh
1344     if(GameHBIRQHook2)
1345      GameHBIRQHook2();
1346    }
1347
1348    X6502_Run(85-16);
1349
1350    if(ScreenON || SpriteON)
1351    {
1352     RefreshAddr=TempAddr;
1353     if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1354    }
1355    spork=0;
1356    ResetRL(XBuf+32);
1357
1358    X6502_Run(16-kook);
1359    kook ^= 1;
1360   }
1361
1362   if(FCEUGameInfo.type==GIT_NSF)
1363   {
1364    // run scanlines for asm core to fuction
1365    for(scanline=0;scanline<240;scanline++)
1366     X6502_Run(256+85);
1367   }
1368   else
1369   {
1370    int x,max,maxref;
1371
1372    deemp=PPU[1]>>5;
1373    SetRefreshLine();
1374    for(scanline=0;scanline<240;)       // scanline is incremented in  DoLine.  Evil. :/
1375    {
1376     deempcnt[deemp]++;
1377     DoLine();
1378    }
1379    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1380    for(x=1,max=0,maxref=0;x<7;x++)
1381    {
1382     if(deempcnt[x]>max)
1383     {
1384      max=deempcnt[x];
1385      maxref=x;
1386     }
1387     deempcnt[x]=0;
1388    }
1389    SetNESDeemph(maxref,0);
1390   }
1391
1392 update:
1393   if(Exit)
1394   {
1395    //CloseGame();
1396    break;
1397   }
1398
1399   {
1400    int ssize;
1401
1402    ssize=FlushEmulateSound();
1403
1404    timestampbase += timestamp;
1405    timestamp = 0;
1406
1407    #ifdef FRAMESKIP
1408    if(FSkip)
1409    {
1410     FCEU_PutImageDummy();
1411     FSkip--;
1412     FCEUD_Update(0,WaveFinalMono,ssize);
1413    }
1414    else
1415    #endif
1416    {
1417     FCEU_PutImage();
1418     FCEUD_Update(XBuf+8,WaveFinalMono,ssize);
1419    }
1420   }
1421
1422  } // for
1423 }
1424
1425 #ifdef FPS
1426 #include <sys/time.h>
1427 uint64 frcount;
1428 #endif
1429 void FCEUI_Emulate(void)
1430 {
1431         #ifdef FPS
1432         uint64 starttime,end;
1433         struct timeval tv;
1434         frcount=0;
1435         gettimeofday(&tv,0);
1436         starttime=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1437         #endif
1438         EmLoop();
1439
1440         #ifdef FPS
1441         // Probably won't work well on Windows port; for
1442         // debugging/speed testing.
1443         {
1444          uint64 w;
1445          int i,frac;
1446          gettimeofday(&tv,0);
1447          end=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1448          w=frcount*10000000000LL/(end-starttime);
1449          i=w/10000;
1450          frac=w-i*10000;
1451          printf("Average FPS: %d.%04d\n",i,frac);
1452         }
1453         #endif
1454
1455 }
1456
1457 void FCEUI_CloseGame(void)
1458 {
1459         Exit=1;
1460 }
1461
1462 static void ResetPPU(void)
1463 {
1464         VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1465         PPUSPL=0;
1466         PPUGenLatch=0;
1467         RefreshAddr=TempAddr=0;
1468         vtoggle = 0;
1469         ppudead = 2;
1470         kook = 0;
1471 }
1472
1473 static void PowerPPU(void)
1474 {
1475         memset(NTARAM,0x00,0x800);
1476         memset(PALRAM,0x00,0x20);
1477         memset(SPRAM,0x00,0x100);
1478         ResetPPU();
1479 }
1480
1481 void ResetNES(void)
1482 {
1483         if(!GameLoaded) return;
1484         GameInterface(GI_RESETM2, 0);
1485         ResetSound();
1486         ResetPPU();
1487         X6502_Reset();
1488 }
1489
1490 static void FCEU_MemoryRand(uint8 *ptr, uint32 size)
1491 {
1492  int x=0;
1493  while(size)
1494  {
1495   *ptr=(x&4)?0xFF:0x00;
1496   x++;
1497   size--;
1498   ptr++;
1499  }
1500 }
1501
1502 void PowerNES(void)
1503 {
1504         if(!GameLoaded) return;
1505
1506         FCEU_CheatResetRAM();
1507         FCEU_CheatAddRAM(2,0,RAM);
1508
1509         GeniePower();
1510
1511 #ifndef DEBUG_ASM_6502
1512         FCEU_MemoryRand(RAM,0x800);
1513 #else
1514         memset(RAM,0x00,0x800);
1515 #endif
1516         ResetMapping();
1517         GameInterface(GI_POWER, 0);
1518         PowerSound();
1519         PowerPPU();
1520         timestampbase=0;
1521 #ifdef ASM_6502
1522         if (geniestage)
1523          GenieSetPages(0);
1524 #endif
1525         X6502_Power();
1526 }
1527
1528
1529 /* savestate stuff */
1530 uint16 TempAddrT,RefreshAddrT;
1531
1532 SFORMAT FCEUPPU_STATEINFO[]={
1533  { NTARAM, 0x800, "NTAR"},
1534  { PALRAM, 0x20, "PRAM"},
1535  { SPRAM, 0x100, "SPRA"},
1536  { PPU, 0x4, "PPUR"},
1537  { &XOffset, 1, "XOFF"},
1538  { &vtoggle, 1, "VTOG"},
1539  { &RefreshAddrT, 2|RLSB, "RADD"},
1540  { &TempAddrT, 2|RLSB, "TADD"},
1541  { &VRAMBuffer, 1, "VBUF"},
1542  { &PPUGenLatch, 1, "PGEN"},
1543  // from 0.98.15
1544  { &kook, 1, "KOOK"},
1545  { &ppudead, 1, "DEAD"},
1546  { &PPUSPL, 1, "PSPL"},
1547  { 0 }
1548  };
1549
1550