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         if (MapIRQHook)
 149                 nes_registers[4] |= 1<<16; // MapIRQHook set bit
 150         nes_registers[7] = (uint32)X.count << 16;
 151
 152         // NVUB DIZC
 153         nes_registers[4]|= X.P & 0x5d;
 154         nes_registers[5] = X.P << 24; // N
 155         if (!(X.P&0x02)) nes_registers[5] |= 1; // Z
 156 }
 157
 158 void asmcpu_pack(void)
 159 {
 160         X.A = nes_registers[0] >> 24;
 161         X.X = nes_registers[1];
 162         X.Y = nes_registers[2];
 163         X.PC= nes_registers[3] - pc_base;
 164         X.S = nes_registers[4] >> 24;
 165         X.IRQlow = nes_registers[4] >> 8;
 166         X.count = (int32) nes_registers[7] >> 16;
 167
 168         // NVUB DIZC
 169         X.P = nes_registers[4] & 0x5d;
 170         if (  nes_registers[5]&0x80000000)  X.P |= 0x80; // N
 171         if (!(nes_registers[5]&0x000000ff)) X.P |= 0x02; // Z
 172 }
 173 #endif
 174
 175 DECLFW(BNull)
 176 {
 177
 178 }
 179
 180 DECLFR(ANull)
 181 {
 182  return(X.DB);
 183 }
 184
 185 int AllocGenieRW(void)
 186 {
 187  if(!(AReadG=FCEU_malloc(0x8000*sizeof(readfunc))))
 188   return 0;
 189  if(!(BWriteG=FCEU_malloc(0x8000*sizeof(writefunc))))
 190   return 0;
 191  RWWrap=1;
 192  return 1;
 193 }
 194
 195 void FlushGenieRW(void)
 196 {
 197  int32 x;
 198
 199  if(RWWrap)
 200  {
 201   for(x=0;x<0x8000;x++)
 202   {
 203    ARead[x+0x8000]=AReadG[x];
 204    BWrite[x+0x8000]=BWriteG[x];
 205   }
 206 #ifdef ASM_6502
 207   GenieSetPages(1);
 208 #endif
 209   free(AReadG);
 210   free(BWriteG);
 211   AReadG=0;
 212   BWriteG=0;
 213   RWWrap=0;
 214  }
 215 }
 216
 217 readfunc FASTAPASS(1) GetReadHandler(int32 a)
 218 {
 219   if(a>=0x8000 && RWWrap)
 220    return AReadG[a-0x8000];
 221   else
 222    return ARead[a];
 223 }
 224
 225 void FASTAPASS(3) SetReadHandler(int32 start, int32 end, readfunc func)
 226 {
 227   int32 x;
 228
 229   if(!func)
 230    func=ANull;
 231
 232   if(RWWrap)
 233    for(x=end;x>=start;x--)
 234    {
 235     if(x>=0x8000)
 236      AReadG[x-0x8000]=func;
 237     else
 238      ARead[x]=func;
 239    }
 240   else
 241
 242    for(x=end;x>=start;x--)
 243     ARead[x]=func;
 244 }
 245
 246 writefunc FASTAPASS(1) GetWriteHandler(int32 a)
 247 {
 248   if(RWWrap && a>=0x8000)
 249    return BWriteG[a-0x8000];
 250   else
 251    return BWrite[a];
 252 }
 253
 254 void FASTAPASS(3) SetWriteHandler(int32 start, int32 end, writefunc func)
 255 {
 256   int32 x;
 257
 258   if(!func)
 259    func=BNull;
 260
 261   if(RWWrap)
 262    for(x=end;x>=start;x--)
 263    {
 264     if(x>=0x8000)
 265      BWriteG[x-0x8000]=func;
 266     else
 267      BWrite[x]=func;
 268    }
 269   else
 270    for(x=end;x>=start;x--)
 271     BWrite[x]=func;
 272 }
 273
 274 uint8 vtoggle=0;
 275 uint8 XOffset=0;
 276
 277 uint32 TempAddr,RefreshAddr;
 278
 279
 280 /* scanline is equal to the current visible scanline we're on. */
 281
 282 int scanline;
 283
 284 uint8 GameMemBlock[131072] __attribute__ ((aligned (4)));
 285 uint8 NTARAM[0x800] __attribute__ ((aligned (4)));
 286 uint8 PALRAM[0x20] __attribute__ ((aligned (4)));
 287 #if !defined(ASM_6502) || defined(DEBUG_ASM_6502)
 288 uint8 RAM[0x800] __attribute__ ((aligned (4)));
 289 #endif
 290
 291 uint8 PPU[4];
 292 uint8 PPUSPL;
 293
 294 uint8 PAL=0;
 295
 296
 297 #define MMC5BGVRAMADR(V)      &MMC5BGVPage[(V)>>10][(V)]
 298 #define VRAMADR(V)      &VPage[(V)>>10][(V)]
 299
 300 static int linestartts;
 301 static int tofix=0;
 302
 303 static uint8 *Plinef;
 304
 305 extern uint8 sprlinebuf[256+8];
 306 extern int32 sphitx;
 307 extern uint8 sphitdata;
 308
 309 extern int spork;       /* spork the world.  Any sprites on this line?
 310                            Then this will be set to 1.  Needed for zapper
 311                            emulation and *gasp* sprite emulation.
 312                         */
 313
 314 static void ResetRL(uint8 *target)
 315 {
 316  if(InputScanlineHook)
 317   InputScanlineHook(0,0,0,0);
 318  Plinef=target;
 319  linestartts=timestamp*48+X6502_GetCycleCount();
 320  tofix=1;
 321 }
 322
 323 static INLINE void Fixit1(void);
 324
 325 /* faking FCEUPPU_LineUpdate() from later versions of the emu */
 326 static void FakedLineUpdate(void)
 327 {
 328  #define TOFIXNUM (272-0x4)
 329  int lastpixel;
 330
 331  if (scanline >= 240) return;
 332
 333  if (tofix || sphitx != 0x100)
 334  {
 335   lastpixel = (timestamp*48-linestartts)>>4;
 336   if (PAL) lastpixel += lastpixel>>4;
 337   //printf("lastpixel: %i\n", lastpixel);
 338  }
 339
 340  if (tofix && lastpixel>=TOFIXNUM)
 341  {
 342   Fixit1();
 343   tofix=0;
 344  }
 345
 346  // CheckSpriteHit()
 347  if(sphitx!=0x100)
 348  {
 349   int l=lastpixel-16;
 350   int x;
 351
 352   for(x=sphitx;x<(sphitx+8) && x<l;x++)
 353   {
 354    if((sphitdata&(0x80>>(x-sphitx))) && !(Plinef[x]&64))
 355    {
 356     PPU_status|=0x40;
 357     sphitx=0x100;
 358     break;
 359    }
 360   }
 361  }
 362 }
 363
 364
 365 static DECLFW(BRAML)
 366 {
 367         RAM[A]=V;
 368 }
 369
 370 static DECLFW(BRAMH)
 371 {
 372         RAM[A&0x7FF]=V;
 373 }
 374
 375 static DECLFR(ARAML)
 376 {
 377         return RAM[A];
 378 }
 379
 380 static DECLFR(ARAMH)
 381 {
 382         return RAM[A&0x7FF];
 383 }
 384
 385
 386 static DECLFR(A2002)
 387 {
 388         /* merged */
 389                         uint8 ret;
 390
 391                         FakedLineUpdate();
 392                         ret = PPU_status;
 393                         ret|=PPUGenLatch&0x1F;
 394                         vtoggle=0;
 395                         PPU_status&=0x7F;
 396                          PPUGenLatch=ret;
 397                         //dprintf("r [2002] %02x",ret);
 398                         return ret;
 399 }
 400
 401 static DECLFR(A200x)
 402 {
 403         /* merged */
 404                         FakedLineUpdate();
 405                         return PPUGenLatch;
 406 }
 407
 408 static DECLFR(A2007)
 409 {
 410         /* merged */
 411                         uint8 ret;
 412                         uint32 tmp=RefreshAddr&0x3FFF;
 413
 414                         FakedLineUpdate();
 415
 416                         ret=VRAMBuffer;
 417
 418                         if(PPU_hook) PPU_hook(tmp);
 419                         PPUGenLatch=VRAMBuffer;
 420                         if(tmp<0x2000)
 421                         {
 422                          VRAMBuffer=VPage[tmp>>10][tmp];
 423                         }
 424                         else
 425                         {
 426                          VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
 427                         }
 428
 429                         if (INC32) RefreshAddr+=32;
 430                         else RefreshAddr++;
 431                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 432                         dprintf("r [2007] %02x",ret);
 433                         return ret;
 434 }
 435
 436 static DECLFW(B2000)
 437 {
 438         /* NMI2? */
 439                 FakedLineUpdate();
 440                 PPUGenLatch=V;
 441                 PPU[0]=V;
 442                 TempAddr&=0xF3FF;
 443                 TempAddr|=(V&3)<<10;
 444 }
 445
 446 static DECLFW(B2001)
 447 {
 448         /* merged */
 449                   FakedLineUpdate();
 450                   PPUGenLatch=V;
 451                   PPU[1]=V;
 452                   if(V&0xE0)
 453                    deemp=V>>5;
 454                   //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
 455 }
 456
 457 static DECLFW(B2002)
 458 {
 459         /* merged */
 460                  PPUGenLatch=V;
 461 }
 462
 463 static DECLFW(B2003)
 464 {
 465         /* merged */
 466                 PPUGenLatch=V;
 467                 PPU[3]=V;
 468                 PPUSPL=V&0x7;
 469 }
 470
 471 static DECLFW(B2004)
 472 {
 473         /* merged */
 474                 PPUGenLatch=V;
 475                 if(PPUSPL>=8)
 476                 {
 477                  if(PPU[3]>=8)
 478                   SPRAM[PPU[3]]=V;
 479                 }
 480                 else
 481                 {
 482                  //printf("$%02x:$%02x\n",PPUSPL,V);
 483                  SPRAM[PPUSPL]=V;
 484                 }
 485                 PPU[3]++;
 486                 PPUSPL++;
 487
 488 }
 489
 490 static DECLFW(B2005)
 491 {
 492         /* merged */
 493                 uint32 tmp=TempAddr;
 494                 FakedLineUpdate();
 495                 PPUGenLatch=V;
 496                 if (!vtoggle)
 497                 {
 498                  tmp&=0xFFE0;
 499                  tmp|=V>>3;
 500                  XOffset=V&7;
 501                 }
 502                 else
 503                 {
 504                  tmp&=0x8C1F;
 505                  tmp|=((V&~0x7)<<2);
 506                  tmp|=(V&7)<<12;
 507                 }
 508
 509                 TempAddr=tmp;
 510                 vtoggle^=1;
 511 }
 512
 513 static DECLFW(B2006)
 514 {
 515         /* merged */
 516                        FakedLineUpdate();
 517
 518                        PPUGenLatch=V;
 519                        if(!vtoggle)
 520                        {
 521                         TempAddr&=0x00FF;
 522                         TempAddr|=(V&0x3f)<<8;
 523                        }
 524                        else
 525                        {
 526                         TempAddr&=0xFF00;
 527                         TempAddr|=V;
 528
 529                         RefreshAddr=TempAddr;
 530                         if(PPU_hook)
 531                          PPU_hook(RefreshAddr);
 532                        }
 533                       vtoggle^=1;
 534 }
 535
 536 static DECLFW(B2007)
 537 {
 538         /* merged */
 539                         uint32 tmp=RefreshAddr&0x3FFF;
 540                         PPUGenLatch=V;
 541                         if(tmp>=0x3F00)
 542                         {
 543                          // hmmm....
 544                          if(!(tmp&0xf))
 545                           PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3f;
 546                          else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
 547                         }
 548                         else if(tmp<0x2000)
 549                         {
 550                           if(PPUCHRRAM&(1<<(tmp>>10)))
 551                             VPage[tmp>>10][tmp]=V;
 552                         }
 553                         else
 554                         {
 555                          if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
 556                           vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
 557                         }
 558                         if (INC32) RefreshAddr+=32;
 559                         else RefreshAddr++;
 560                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 561 }
 562
 563 static DECLFW(B4014)
 564 {
 565         uint32 t=V<<8;
 566         int x;
 567
 568         for(x=0;x<256;x++)
 569          B2004(0x2004,X.DB=ARead[t+x](t+x));
 570         X6502_AddCycles(512);
 571 }
 572
 573 void BGRender(uint8 *target)
 574 {
 575         uint32 tem, vofs;
 576         vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 577
 578         Pal[0]|=64;
 579         Pal[4]|=64;
 580         Pal[8]|=64;
 581         Pal[0xC]|=64;
 582         RefreshLine(target-XOffset, vofs);
 583         Pal[0]&=63;
 584         Pal[4]&=63;
 585         Pal[8]&=63;
 586         Pal[0xC]&=63;
 587
 588         if(!(PPU[1]&2))
 589         {
 590          tem=Pal[0]|0x40;
 591          tem|=tem<<8;
 592          tem|=tem<<16;
 593          *(uint32 *)target=*(uint32 *)(target+4)=tem;
 594         }
 595 }
 596
 597 #ifdef FRAMESKIP
 598 int FSkip=0;
 599 void FCEUI_FrameSkip(int x)
 600 {
 601  FSkip=x;
 602 }
 603 #endif
 604
 605 /*      This is called at the beginning of each visible scanline */
 606 static void LineUpdate(uint8 *target)
 607 {
 608         uint32 tem;
 609         int y;
 610
 611         /* PRefreshLine() will not get called on skipped frames.  This
 612          * could cause a problem, but the solution would be rather complex,
 613          * due to the current sprite 0 hit code.
 614          */
 615         if(FSkip)
 616         {
 617          y=(int)SPRAM[0] + 1;
 618          if(scanline==y && SpriteON) PPU_status|=0x40; // hack
 619          return;
 620         }
 621
 622         if(scanline < FSettings.FirstSLine || scanline > FSettings.LastSLine)
 623         {
 624            if(PPU_hook)
 625             PRefreshLine();
 626            y=(int)SPRAM[0] + 1;
 627            if(scanline==y && SpriteON) PPU_status|=0x40;
 628         }
 629         else
 630         {
 631          if(ScreenON)
 632          {
 633            BGRender(target);
 634          }
 635          else
 636          {
 637            tem=Pal[0]|0x40;
 638            tem|=tem << 8;
 639            tem|=tem << 16;
 640            FCEU_dwmemset(target,tem,256);
 641          }
 642         }
 643
 644         if(InputScanlineHook)
 645          InputScanlineHook(target,spork?sprlinebuf:0,linestartts,256);
 646 }
 647
 648
 649 static void LineUpdateEnd(uint8 *target)
 650 {
 651 #ifdef GP2X
 652  if(ScreenON || SpriteON)  // Yes, very el-cheapo.
 653  {
 654   if(PPU[1]&0x01)
 655    block_and(target, 256, 0x30);
 656  }
 657  if((PPU[1]>>5)==0x7)
 658   block_or(target, 256, 0xc0);
 659  else if(PPU[1]&0xE0)
 660   block_or(target, 256, 0x40);
 661  else
 662   block_andor(target, 256, 0x3f, 0x80);
 663 #else
 664  int x;
 665
 666  if(ScreenON || SpriteON)  // Yes, very el-cheapo.
 667  {
 668   if(PPU[1]&0x01)
 669   {
 670    for(x=63;x>=0;x--)
 671    *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])&0x30303030;
 672   }
 673  }
 674  if((PPU[1]>>5)==0x7)
 675  {
 676   for(x=63;x>=0;x--)
 677    *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0xc0c0c0c0;
 678  }
 679  else if(PPU[1]&0xE0)
 680   for(x=63;x>=0;x--)
 681    *(uint32 *)&target[x<<2]=(*(uint32*)&target[x<<2])|0x40404040;
 682  else
 683   for(x=63;x>=0;x--)
 684    *(uint32 *)&target[x<<2]=((*(uint32*)&target[x<<2])&0x3f3f3f3f)|0x80808080;
 685 #endif
 686
 687  // black borders
 688  ((uint32 *)target)[-2]=((uint32 *)target)[-1]=0;
 689  ((uint32 *)target)[64]=((uint32 *)target)[65]=0;
 690 }
 691
 692 #define PAL(c)  ((c)+cc)
 693
 694
 695 static void PRefreshLine(void)
 696 {
 697          uint32 vofs;
 698          int X1;
 699          vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 700          void (*PPU_hook_)(uint32 A) = PPU_hook;
 701
 702
 703          for(X1=33;X1;X1--)
 704          {
 705                 uint32 zz2;
 706                 uint32 vadr;
 707
 708                 zz2=(RefreshAddr>>10)&3;
 709                 PPU_hook_(0x2000|(RefreshAddr&0xFFF));
 710
 711                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 712
 713                 PPU_hook_(vadr);
 714
 715                 if((RefreshAddr&0x1f)==0x1f)
 716                  RefreshAddr^=0x41F;
 717                 else
 718                  RefreshAddr++;
 719          }
 720 }
 721
 722 /* This high-level graphics MMC5 emulation code was written
 723    for MMC5 carts in "CL" mode.  It's probably not totally
 724    correct for carts in "SL" mode.
 725    */
 726 static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
 727 {
 728           int8 tochange, X1;
 729
 730           tochange=MMC5HackSPMode&0x1F;
 731
 732           for(X1=33;X1;X1--,P+=8)
 733           {
 734                 uint8 *C;
 735                 uint8 cc,zz,zz2;
 736                 uint32 vadr;
 737
 738                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 739                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 740                 {
 741                  uint8 xs,ys;
 742
 743                  xs=33-X1;
 744                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 745                  if(ys>=0x1E) ys-=0x1E;
 746                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 747
 748                  C = MMC5HackVROMPTR+vadr;
 749                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 750
 751                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 752                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 753                 }
 754                 else
 755                 {
 756                  zz=RefreshAddr&0x1F;
 757                  zz2=(RefreshAddr>>10)&3;
 758                  vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 759                  C = MMC5BGVRAMADR(vadr);
 760                  cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 761                  cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 762                 }
 763                 #include "fceline.h"
 764
 765                 if((RefreshAddr&0x1f)==0x1f)
 766                  RefreshAddr^=0x41F;
 767                 else
 768                  RefreshAddr++;
 769                 tochange--;
 770           }
 771 }
 772
 773 static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
 774 {
 775           int8 tochange, X1;
 776
 777           tochange=MMC5HackSPMode&0x1F;
 778
 779           for(X1=33;X1;X1--,P+=8)
 780           {
 781                 uint8 *C;
 782                 uint8 cc;
 783                 uint8 zz2;
 784                 uint32 vadr;
 785
 786                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 787                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 788                 {
 789                  uint8 xs,ys;
 790
 791                  xs=33-X1;
 792                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 793                  if(ys>=0x1E) ys-=0x1E;
 794                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 795
 796                  C = MMC5HackVROMPTR+vadr;
 797                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 798
 799                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 800                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 801                 }
 802                 else
 803                 {
 804                  C=MMC5HackVROMPTR;
 805                  zz2=(RefreshAddr>>10)&3;
 806                  vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 807                  C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 808                          MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 809                  vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 810                  cc = vadr;
 811                 }
 812                 #include "fceline.h"
 813                 if((RefreshAddr&0x1f)==0x1f)
 814                  RefreshAddr^=0x41F;
 815                 else
 816                  RefreshAddr++;
 817                 tochange--;
 818           }
 819 }
 820
 821 static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
 822 {
 823           int8 X1;
 824
 825           for(X1=33;X1;X1--,P+=8)
 826           {
 827                 uint8 *C;
 828                 uint8 cc;
 829                 uint8 zz2;
 830                 uint32 vadr;
 831
 832                 C=MMC5HackVROMPTR;
 833                 zz2=(RefreshAddr>>10)&3;
 834                 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 835                 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 836                         MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 837                 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 838                 cc = vadr;
 839
 840                 #include "fceline.h"
 841                 if((RefreshAddr&0x1f)==0x1f)
 842                  RefreshAddr^=0x41F;
 843                 else
 844                  RefreshAddr++;
 845           }
 846 }
 847
 848 static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
 849 {
 850           int8 X1;
 851
 852           for(X1=33;X1;X1--,P+=8)
 853           {
 854                 uint8 *C;
 855                 uint8 cc,zz,zz2;
 856                 uint32 vadr;
 857
 858                 zz=RefreshAddr&0x1F;
 859                 zz2=(RefreshAddr>>10)&3;
 860                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 861                 C = MMC5BGVRAMADR(vadr);
 862                 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 863                 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 864
 865                 #include "fceline.h"
 866
 867                 if((RefreshAddr&0x1f)==0x1f)
 868                  RefreshAddr^=0x41F;
 869                 else
 870                  RefreshAddr++;
 871           }
 872 }
 873
 874 static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
 875 {
 876          int8 X1;
 877          void (*PPU_hook_)(uint32 A) = PPU_hook;
 878          uint32 rfraddr = RefreshAddr;
 879          uint8 *page = vnapage[(rfraddr>>10)&3];
 880
 881          for(X1=33;X1;X1--,P+=8)
 882          {
 883                 uint8 *C;
 884                 uint8 cc,zz;
 885                 uint32 vadr;
 886
 887                 zz=rfraddr&0x1F;
 888                 PPU_hook_(0x2000|(rfraddr&0xFFF));
 889                 cc=page[0x3c0+(zz>>2)+((rfraddr&0x380)>>4)];
 890                 cc=((cc >> ((zz&2) + ((rfraddr&0x40)>>4))) &3) <<2;
 891                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 892                 C = VRAMADR(vadr);
 893
 894                 #include "fceline.h"
 895
 896                 PPU_hook_(vadr);
 897
 898                 if((rfraddr&0x1f)==0x1f) {
 899                  rfraddr^=0x41F;
 900                  page = vnapage[(rfraddr>>10)&3];
 901                 } else
 902                  rfraddr++;
 903          }
 904          RefreshAddr = rfraddr;
 905 }
 906
 907 static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
 908 {
 909          int8 X1;
 910          uint32 rfraddr = RefreshAddr;
 911          uint8 *page = vnapage[(rfraddr>>10)&3];
 912          uint32 cc2=0;
 913
 914          if ((rfraddr&0xc)!=0)
 915           cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 916
 917          for (X1=33;X1;X1--,P+=8)
 918          {
 919                 uint8 cc,*C;
 920                 uint32 vadr;
 921
 922                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 923                 C = VRAMADR(vadr);
 924                 if ((rfraddr&0xc)==0)
 925                  cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 926                 cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
 927
 928                 #include "fceline.h"
 929
 930                 if((rfraddr&0x1f)==0x1f) {
 931                  rfraddr^=0x41F;
 932                  page = vnapage[(rfraddr>>10)&3];
 933                 } else
 934                  rfraddr++;
 935          }
 936          RefreshAddr = rfraddr;
 937 }
 938
 939 static void SetRefreshLine(void)
 940 {
 941         if(MMC5Hack && geniestage!=1)
 942         {
 943          if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
 944          {
 945                  if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
 946                  RefreshLine = RefreshLine_MMC5Hack1;
 947          }
 948          else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
 949          {
 950                 if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
 951                  RefreshLine = RefreshLine_MMC5Hack2;
 952          }
 953          else if(MMC5HackCHRMode==1)
 954          {
 955                 if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
 956                  RefreshLine = RefreshLine_MMC5Hack3;
 957          }
 958          else
 959          {
 960                 if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
 961                  RefreshLine = RefreshLine_MMC5Hack4;
 962          }
 963         }       // End if(MMC5Hack)
 964         else if(PPU_hook)
 965         {
 966                 if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
 967                 RefreshLine = RefreshLine_PPU_hook;
 968         }
 969         else
 970         {
 971                 if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
 972                 RefreshLine = RefreshLine_normal;
 973         }
 974 }
 975
 976 static INLINE
 977 void Fixit2(void)
 978 {
 979    if(ScreenON || SpriteON)
 980    {
 981     uint32 rad=RefreshAddr;
 982     rad&=0xFBE0;
 983     rad|=TempAddr&0x041f;
 984     RefreshAddr=rad;
 985     //PPU_hook(RefreshAddr,-1);
 986    }
 987 }
 988
 989 static INLINE
 990 void Fixit1(void)
 991 {
 992    if(ScreenON || SpriteON)
 993    {
 994     uint32 rad=RefreshAddr;
 995
 996     if((rad&0x7000)==0x7000)
 997     {
 998      rad^=0x7000;
 999      if((rad&0x3E0)==0x3A0)
1000      {
1001       rad^=0x3A0;
1002       rad^=0x800;
1003      }
1004      else
1005      {
1006       if((rad&0x3E0)==0x3e0)
1007        rad^=0x3e0;
1008       else rad+=0x20;
1009      }
1010     }
1011     else
1012      rad+=0x1000;
1013     RefreshAddr=rad;
1014     //PPU_hook(RefreshAddr,-1);
1015    }
1016 }
1017
1018
1019 // ============================//
1020 // end of new code
1021 // ===========================//
1022
1023 void ResetMapping(void)
1024 {
1025         int x;
1026
1027         SetReadHandler(0x0000,0xFFFF,ANull);
1028         SetWriteHandler(0x0000,0xFFFF,BNull);
1029
1030         SetReadHandler(0,0x7FF,ARAML);
1031         SetWriteHandler(0,0x7FF,BRAML);
1032
1033         SetReadHandler(0x800,0x1FFF,ARAMH);  /* Part of a little */
1034         SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
1035
1036         for(x=0x2000;x<0x4000;x+=8)
1037         {
1038          ARead[x]=A200x;
1039          BWrite[x]=B2000;
1040          ARead[x+1]=A200x;
1041          BWrite[x+1]=B2001;
1042          ARead[x+2]=A2002;
1043          BWrite[x+2]=B2002;
1044          ARead[x+3]=A200x;
1045          BWrite[x+3]=B2003;
1046          ARead[x+4]=A200x;
1047          BWrite[x+4]=B2004;
1048          ARead[x+5]=A200x;
1049          BWrite[x+5]=B2005;
1050          ARead[x+6]=A200x;
1051          BWrite[x+6]=B2006;
1052          ARead[x+7]=A2007;
1053          BWrite[x+7]=B2007;
1054         }
1055
1056         BWrite[0x4014]=B4014;
1057         SetNESSoundMap();
1058         InitializeInput();
1059 }
1060
1061 int GameLoaded=0;
1062 void CloseGame(void)
1063 {
1064  FCEUI_StopMovie();
1065  if(GameLoaded)
1066  {
1067   if(FCEUGameInfo.type!=GIT_NSF)
1068    FCEU_FlushGameCheats(0,0);
1069   #ifdef NETWORK
1070   if(FSettings.NetworkPlay) KillNetplay();
1071   #endif
1072   GameInterface(GI_CLOSE, 0);
1073   CloseGenie();
1074   GameLoaded=0;
1075  }
1076 }
1077
1078 void ResetGameLoaded(void)
1079 {
1080         if(GameLoaded) CloseGame();
1081         GameStateRestore=0;
1082         PPU_hook=0;
1083         GameHBIRQHook=GameHBIRQHook2=0;
1084         GameExpSound.Fill=0;
1085         GameExpSound.RChange=0;
1086         if(GameExpSound.Kill)
1087          GameExpSound.Kill();
1088         GameExpSound.Kill=0;
1089         MapIRQHook=0;
1090         MMC5Hack=0;
1091         PAL&=1;
1092         pale=0;
1093
1094         FCEUGameInfo.name=0;
1095         FCEUGameInfo.type=GIT_CART;
1096         FCEUGameInfo.vidsys=GIV_USER;
1097         FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
1098         FCEUGameInfo.inputfc=-1;
1099 }
1100
1101 char lastLoadedGameName [2048];
1102 int LoadGameLastError = 0;
1103 int UNIFLoad(const char *name, int fp);
1104 int iNESLoad(const char *name, int fp);
1105 int FDSLoad(const char *name, int fp);
1106 int NSFLoad(int fp);
1107
1108 FCEUGI *FCEUI_LoadGame(char *name)
1109 {
1110         char name2[512];
1111         int have_movie = 0;
1112         int fp;
1113
1114         //Exit=1;
1115         LoadGameLastError = 0;
1116         ResetGameLoaded();
1117
1118         strncpy(name2, name, sizeof(name2));
1119         name2[sizeof(name2)-1] = 0;
1120
1121         fp=FCEU_fopen(name2,"rb");
1122         if(!fp)
1123         {
1124          FCEU_PrintError("Error opening \"%s\"!",name);
1125          LoadGameLastError = 1;
1126          return 0;
1127         }
1128
1129         {
1130          char *p = name2 + strlen(name2) - 4;
1131          if (strcmp(p, ".fcm") == 0)
1132          {
1133           // movie detected
1134           printf("movie detected\n");
1135           FCEU_fclose(fp);
1136           *p = 0;
1137           fp=FCEU_fopen(name2,"rb");
1138           if (!fp && p - name2 > 2)  p[-2] = 0;
1139           fp=FCEU_fopen(name2,"rb");
1140           if (!fp) {
1141            printf("no ROM for movie\n");
1142            LoadGameLastError = 2;
1143            return 0;
1144           }
1145           have_movie = 1;
1146          }
1147         }
1148
1149         GetFileBase(name2);
1150         if(iNESLoad(name2,fp))
1151          goto endlseq;
1152         if(NSFLoad(fp))
1153          goto endlseq;
1154         if(FDSLoad(name2,fp))
1155          goto endlseq;
1156         if(UNIFLoad(name2,fp))
1157          goto endlseq;
1158
1159         FCEU_PrintError("An error occurred while loading the file.");
1160         FCEU_fclose(fp);
1161         // format handlers may set LoadGameLastError themselves.
1162         if (LoadGameLastError == 0) LoadGameLastError = 3;
1163         return 0;
1164
1165         endlseq:
1166         FCEU_fclose(fp);
1167         GameLoaded=1;
1168
1169         FCEU_ResetVidSys();
1170         if(FCEUGameInfo.type!=GIT_NSF)
1171          if(FSettings.GameGenie)
1172           OpenGenie();
1173
1174         PowerNES();
1175         #ifdef NETWORK
1176         if(FSettings.NetworkPlay) InitNetplay();
1177         #endif
1178         SaveStateRefresh();
1179         if(FCEUGameInfo.type!=GIT_NSF)
1180         {
1181          FCEU_LoadGamePalette();
1182          FCEU_LoadGameCheats(0);
1183         }
1184
1185         FCEU_ResetPalette();
1186         Exit=0;
1187
1188         if (have_movie)
1189                 FCEUI_LoadMovie(name, 1);
1190
1191         strcpy(lastLoadedGameName, name2);
1192
1193         return(&FCEUGameInfo);
1194 }
1195
1196
1197 void FCEU_ResetVidSys(void)
1198 {
1199  int w;
1200
1201  if(FCEUGameInfo.vidsys==GIV_NTSC)
1202   w=0;
1203  else if(FCEUGameInfo.vidsys==GIV_PAL)
1204   w=1;
1205  else
1206   w=FSettings.PAL;
1207
1208  if(w)
1209  {
1210   PAL=1;
1211   FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1212   FSettings.LastSLine=FSettings.UsrLastSLine[1];
1213  }
1214  else
1215  {
1216   PAL=0;
1217   FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1218   FSettings.LastSLine=FSettings.UsrLastSLine[0];
1219  }
1220  printf("ResetVidSys: PAL = %i\n", PAL);
1221  SetSoundVariables();
1222 }
1223
1224 int FCEUI_Initialize(void)
1225 {
1226         if(!InitVirtualVideo())
1227          return 0;
1228         memset(&FSettings,0,sizeof(FSettings));
1229         FSettings.UsrFirstSLine[0]=8;
1230         FSettings.UsrFirstSLine[1]=0;
1231         FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
1232         FSettings.SoundVolume=100;
1233         return 1;
1234 }
1235
1236 void MMC5_hb(int);     /* Ugh ugh ugh. */
1237 static void DoLine(void)
1238 {
1239    uint8 *target=XBuf+scanline*320+32;
1240
1241    LineUpdate(target);
1242
1243    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1244
1245    X6502_Run(256);
1246
1247    // check: Battletoads & Double Dragon, Addams Family
1248    // sky glitches in SMB1 if done wrong
1249    FakedLineUpdate();
1250
1251 #ifdef FRAMESKIP
1252    if(!FSkip)
1253 #endif
1254    if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
1255    {
1256     if(SpriteON && spork)
1257      CopySprites(target);
1258
1259     LineUpdateEnd(target);
1260    }
1261    sphitx=0x100;
1262
1263    if(ScreenON || SpriteON)
1264     FetchSpriteData();
1265
1266    // DoHBlank();
1267    if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
1268    {
1269     X6502_Run(6);
1270     Fixit2();
1271     X6502_Run(4);
1272     GameHBIRQHook();
1273     X6502_Run(85-10-16);
1274    }
1275    else
1276    {
1277     X6502_Run(6);  // Tried 65, caused problems with Slalom(maybe others)
1278     Fixit2();
1279     X6502_Run(85-6-16);
1280    }
1281
1282    if(SpriteON)
1283     RefreshSprites();
1284    if(GameHBIRQHook2 && (ScreenON || SpriteON))
1285     GameHBIRQHook2();
1286    scanline++;
1287    if (scanline<240)
1288     ResetRL(XBuf+scanline*320+32);
1289    X6502_Run(16);
1290 }
1291
1292
1293 void EmLoop(void)
1294 {
1295  for(;;)
1296  {
1297   int x;
1298   uint32 scanlines_per_frame = PAL ? 312 : 262;
1299   UpdateInput();
1300   FCEU_ApplyPeriodicCheats();
1301
1302   // FCEUPPU_Loop:
1303   if(ppudead) /* Needed for Knight Rider, possibly others. */
1304   {
1305    //memset(XBuf, 0, 320*240);
1306    X6502_Run(scanlines_per_frame*(256+85));
1307    ppudead--;
1308    goto update;
1309   }
1310
1311   X6502_Run(256+85);
1312
1313   PPU[2]|=0x80;
1314   PPU[3]=PPUSPL=0;             /* Not sure if this is correct.  According
1315                                   to Matt Conte and my own tests, it is.  Timing is probably
1316                                   off, though.  NOTE:  Not having this here
1317                                   breaks a Super Donkey Kong game. */
1318
1319   X6502_Run(12);                /* I need to figure out the true nature and length
1320                                    of this delay.
1321                                 */
1322   if(FCEUGameInfo.type==GIT_NSF)
1323    DoNSFFrame();
1324   else if(VBlankON)
1325    TriggerNMI();
1326
1327   // Note: this is needed for asm core
1328   // Warning: using 'scanline' var here breaks Castlevania III
1329   {
1330    int lines;
1331    X6502_Run(256+85-12);
1332    for (lines=scanlines_per_frame-242-1;lines;lines--)
1333      X6502_Run(256+85);
1334   }
1335   // X6502_Run((scanlines_per_frame-242)*(256+85)-12);
1336   PPU_status&=0x1f;
1337   X6502_Run(256);
1338
1339   {
1340    if(ScreenON || SpriteON)
1341    {
1342     if(GameHBIRQHook)
1343      GameHBIRQHook();
1344      if(PPU_hook)
1345       for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} // ugh
1346     if(GameHBIRQHook2)
1347      GameHBIRQHook2();
1348    }
1349
1350    X6502_Run(85-16);
1351
1352    if(ScreenON || SpriteON)
1353    {
1354     RefreshAddr=TempAddr;
1355     if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1356    }
1357    spork=0;
1358    ResetRL(XBuf+32);
1359
1360    X6502_Run(16-kook);
1361    kook ^= 1;
1362   }
1363
1364   if(FCEUGameInfo.type==GIT_NSF)
1365   {
1366    // run scanlines for asm core to fuction
1367    for(scanline=0;scanline<240;scanline++)
1368     X6502_Run(256+85);
1369   }
1370   else
1371   {
1372    int x,max,maxref;
1373
1374    deemp=PPU[1]>>5;
1375    SetRefreshLine();
1376    for(scanline=0;scanline<240;)       // scanline is incremented in  DoLine.  Evil. :/
1377    {
1378     deempcnt[deemp]++;
1379     DoLine();
1380    }
1381    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1382    for(x=1,max=0,maxref=0;x<7;x++)
1383    {
1384     if(deempcnt[x]>max)
1385     {
1386      max=deempcnt[x];
1387      maxref=x;
1388     }
1389     deempcnt[x]=0;
1390    }
1391    SetNESDeemph(maxref,0);
1392   }
1393
1394 update:
1395   if(Exit)
1396   {
1397    //CloseGame();
1398    break;
1399   }
1400
1401   {
1402    int ssize;
1403
1404    ssize=FlushEmulateSound();
1405
1406    timestampbase += timestamp;
1407    timestamp = 0;
1408
1409    #ifdef FRAMESKIP
1410    if(FSkip)
1411    {
1412     FCEU_PutImageDummy();
1413     FSkip--;
1414     FCEUD_Update(0,WaveFinalMono,ssize);
1415    }
1416    else
1417    #endif
1418    {
1419     FCEU_PutImage();
1420     FCEUD_Update(XBuf+8,WaveFinalMono,ssize);
1421    }
1422   }
1423
1424  } // for
1425 }
1426
1427 #ifdef FPS
1428 #include <sys/time.h>
1429 uint64 frcount;
1430 #endif
1431 void FCEUI_Emulate(void)
1432 {
1433         #ifdef FPS
1434         uint64 starttime,end;
1435         struct timeval tv;
1436         frcount=0;
1437         gettimeofday(&tv,0);
1438         starttime=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1439         #endif
1440         EmLoop();
1441
1442         #ifdef FPS
1443         // Probably won't work well on Windows port; for
1444         // debugging/speed testing.
1445         {
1446          uint64 w;
1447          int i,frac;
1448          gettimeofday(&tv,0);
1449          end=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1450          w=frcount*10000000000LL/(end-starttime);
1451          i=w/10000;
1452          frac=w-i*10000;
1453          printf("Average FPS: %d.%04d\n",i,frac);
1454         }
1455         #endif
1456
1457 }
1458
1459 void FCEUI_CloseGame(void)
1460 {
1461         Exit=1;
1462 }
1463
1464 static void ResetPPU(void)
1465 {
1466         VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1467         PPUSPL=0;
1468         PPUGenLatch=0;
1469         RefreshAddr=TempAddr=0;
1470         vtoggle = 0;
1471         ppudead = 2;
1472         kook = 0;
1473 }
1474
1475 static void PowerPPU(void)
1476 {
1477         memset(NTARAM,0x00,0x800);
1478         memset(PALRAM,0x00,0x20);
1479         memset(SPRAM,0x00,0x100);
1480         ResetPPU();
1481 }
1482
1483 void ResetNES(void)
1484 {
1485         if(!GameLoaded) return;
1486         GameInterface(GI_RESETM2, 0);
1487         ResetSound();
1488         ResetPPU();
1489         X6502_Reset();
1490 }
1491
1492 static void FCEU_MemoryRand(uint8 *ptr, uint32 size)
1493 {
1494  int x=0;
1495  while(size)
1496  {
1497   *ptr=(x&4)?0xFF:0x00;
1498   x++;
1499   size--;
1500   ptr++;
1501  }
1502 }
1503
1504 void PowerNES(void)
1505 {
1506         if(!GameLoaded) return;
1507
1508         FCEU_CheatResetRAM();
1509         FCEU_CheatAddRAM(2,0,RAM);
1510
1511         GeniePower();
1512
1513 #ifndef DEBUG_ASM_6502
1514         FCEU_MemoryRand(RAM,0x800);
1515 #else
1516         memset(RAM,0x00,0x800);
1517 #endif
1518         ResetMapping();
1519         PowerSound();
1520         PowerPPU();
1521         GameInterface(GI_POWER, 0);
1522         timestampbase=0;
1523 #ifdef ASM_6502
1524         if (geniestage)
1525          GenieSetPages(0);
1526 #endif
1527         X6502_Power();
1528 }
1529
1530
1531 /* savestate stuff */
1532 uint16 TempAddrT,RefreshAddrT;
1533
1534 SFORMAT FCEUPPU_STATEINFO[]={
1535  { NTARAM, 0x800, "NTAR"},
1536  { PALRAM, 0x20, "PRAM"},
1537  { SPRAM, 0x100, "SPRA"},
1538  { PPU, 0x4, "PPUR"},
1539  { &XOffset, 1, "XOFF"},
1540  { &vtoggle, 1, "VTOG"},
1541  { &RefreshAddrT, 2|RLSB, "RADD"},
1542  { &TempAddrT, 2|RLSB, "TADD"},
1543  { &VRAMBuffer, 1, "VBUF"},
1544  { &PPUGenLatch, 1, "PGEN"},
1545  // from 0.98.15
1546  { &kook, 1, "KOOK"},
1547  { &ppudead, 1, "DEAD"},
1548  { &PPUSPL, 1, "PSPL"},
1549  { 0 }
1550  };
1551
1552