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 int tosprite=256;
  98
  99 FCEUGI FCEUGameInfo;
 100 void (*GameInterface)(int h);
 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         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 void ResetRL(void)
 304 {
 305  linestartts=timestamp*48+X6502_GetCycleCount();
 306  tofix=1;
 307 }
 308
 309 static INLINE void Fixit1(void);
 310
 311 static void TryFixit1(void)
 312 {
 313  #define TOFIXNUM (272-0x4)
 314  int lastpixel;
 315
 316  if (scanline < 240 && tofix)
 317  {
 318   lastpixel = (timestamp*48-linestartts)>>4;
 319   if (PAL) lastpixel += lastpixel>>4;
 320
 321   //printf("lastpixel: %i\n", lastpixel);
 322
 323   if(lastpixel>=TOFIXNUM)
 324   {
 325    Fixit1();
 326    tofix=0;
 327   }
 328  }
 329 }
 330
 331
 332 static DECLFW(BRAML)
 333 {
 334         RAM[A]=V;
 335 }
 336
 337 static DECLFW(BRAMH)
 338 {
 339         RAM[A&0x7FF]=V;
 340 }
 341
 342 static DECLFR(ARAML)
 343 {
 344         return RAM[A];
 345 }
 346
 347 static DECLFR(ARAMH)
 348 {
 349         return RAM[A&0x7FF];
 350 }
 351
 352
 353 static DECLFR(A2002)
 354 {
 355         /* merged */
 356                         uint8 ret;
 357
 358                         TryFixit1();
 359                         ret = PPU_status;
 360                         ret|=PPUGenLatch&0x1F;
 361                         vtoggle=0;
 362                         PPU_status&=0x7F;
 363                          PPUGenLatch=ret;
 364                         //dprintf("r [2002] %02x",ret);
 365                         return ret;
 366 }
 367
 368 static DECLFR(A200x)
 369 {
 370         /* merged */
 371                         TryFixit1();
 372                         return PPUGenLatch;
 373 }
 374
 375 static DECLFR(A2007)
 376 {
 377         /* merged */
 378                         uint8 ret;
 379                         uint32 tmp=RefreshAddr&0x3FFF;
 380
 381                         TryFixit1();
 382
 383                         ret=VRAMBuffer;
 384
 385                         if(PPU_hook) PPU_hook(tmp);
 386                         PPUGenLatch=VRAMBuffer;
 387                         if(tmp<0x2000)
 388                         {
 389                          VRAMBuffer=VPage[tmp>>10][tmp];
 390                         }
 391                         else
 392                         {
 393                          VRAMBuffer=vnapage[(tmp>>10)&0x3][tmp&0x3FF];
 394                         }
 395
 396                         if (INC32) RefreshAddr+=32;
 397                         else RefreshAddr++;
 398                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 399                         dprintf("r [2007] %02x",ret);
 400                         return ret;
 401 }
 402
 403 static DECLFW(B2000)
 404 {
 405         /* NMI2? */
 406                 TryFixit1();
 407                 PPUGenLatch=V;
 408                 PPU[0]=V;
 409                 TempAddr&=0xF3FF;
 410                 TempAddr|=(V&3)<<10;
 411 }
 412
 413 static DECLFW(B2001)
 414 {
 415         /* merged */
 416                   TryFixit1();
 417                   PPUGenLatch=V;
 418                   PPU[1]=V;
 419                   if(V&0xE0)
 420                    deemp=V>>5;
 421                   //printf("$%04x:$%02x, %d\n",X.PC,V,scanline);
 422 }
 423
 424 static DECLFW(B2002)
 425 {
 426         /* merged */
 427                  PPUGenLatch=V;
 428 }
 429
 430 static DECLFW(B2003)
 431 {
 432         /* merged */
 433                 PPUGenLatch=V;
 434                 PPU[3]=V;
 435                 PPUSPL=V&0x7;
 436 }
 437
 438 static DECLFW(B2004)
 439 {
 440         /* merged */
 441                 PPUGenLatch=V;
 442                 if(PPUSPL>=8)
 443                 {
 444                  if(PPU[3]>=8)
 445                   SPRAM[PPU[3]]=V;
 446                 }
 447                 else
 448                 {
 449                  //printf("$%02x:$%02x\n",PPUSPL,V);
 450                  SPRAM[PPUSPL]=V;
 451                 }
 452                 PPU[3]++;
 453                 PPUSPL++;
 454
 455 }
 456
 457 static DECLFW(B2005)
 458 {
 459         /* merged */
 460                 uint32 tmp=TempAddr;
 461                 TryFixit1();
 462                 PPUGenLatch=V;
 463                 if (!vtoggle)
 464                 {
 465                  tmp&=0xFFE0;
 466                  tmp|=V>>3;
 467                  XOffset=V&7;
 468                 }
 469                 else
 470                 {
 471                  tmp&=0x8C1F;
 472                  tmp|=((V&~0x7)<<2);
 473                  tmp|=(V&7)<<12;
 474                 }
 475
 476                 TempAddr=tmp;
 477                 vtoggle^=1;
 478 }
 479
 480 static DECLFW(B2006)
 481 {
 482         /* merged */
 483                        TryFixit1();
 484
 485                        PPUGenLatch=V;
 486                        if(!vtoggle)
 487                        {
 488                         TempAddr&=0x00FF;
 489                         TempAddr|=(V&0x3f)<<8;
 490                        }
 491                        else
 492                        {
 493                         TempAddr&=0xFF00;
 494                         TempAddr|=V;
 495
 496                         RefreshAddr=TempAddr;
 497                         if(PPU_hook)
 498                          PPU_hook(RefreshAddr);
 499                        }
 500                       vtoggle^=1;
 501 }
 502
 503 static DECLFW(B2007)
 504 {
 505         /* merged */
 506                         uint32 tmp=RefreshAddr&0x3FFF;
 507                         PPUGenLatch=V;
 508                         if(tmp>=0x3F00)
 509                         {
 510                          // hmmm....
 511                          if(!(tmp&0xf))
 512                           PALRAM[0x00]=PALRAM[0x04]=PALRAM[0x08]=PALRAM[0x0C]=V&0x3f;
 513                          else if(tmp&3) PALRAM[(tmp&0x1f)]=V&0x3f;
 514                         }
 515                         else if(tmp<0x2000)
 516                         {
 517                           if(PPUCHRRAM&(1<<(tmp>>10)))
 518                             VPage[tmp>>10][tmp]=V;
 519                         }
 520                         else
 521                         {
 522                          if(PPUNTARAM&(1<<((tmp&0xF00)>>10)))
 523                           vnapage[((tmp&0xF00)>>10)][tmp&0x3FF]=V;
 524                         }
 525                         if (INC32) RefreshAddr+=32;
 526                         else RefreshAddr++;
 527                         if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
 528 }
 529
 530 static DECLFW(B4014)
 531 {
 532         uint32 t=V<<8;
 533         int x;
 534
 535         for(x=0;x<256;x++)
 536          B2004(0x2004,X.DB=ARead[t+x](t+x));
 537         X6502_AddCycles(512);
 538 }
 539
 540 void BGRender(uint8 *target)
 541 {
 542         uint32 tem, vofs;
 543         vofs=((PPU[0]&0x10)<<8) | ((RefreshAddr>>12)&7);
 544
 545         Pal[0]|=64;
 546         Pal[4]|=64;
 547         Pal[8]|=64;
 548         Pal[0xC]|=64;
 549         RefreshLine(target-XOffset, vofs);
 550         Pal[0]&=63;
 551         Pal[4]&=63;
 552         Pal[8]&=63;
 553         Pal[0xC]&=63;
 554
 555         if(!(PPU[1]&2))
 556         {
 557          tem=Pal[0]|0x40;
 558          tem|=tem<<8;
 559          tem|=tem<<16;
 560          *(uint32 *)target=*(uint32 *)(target+4)=tem;
 561         }
 562 }
 563
 564 #ifdef FRAMESKIP
 565 int FSkip_setting=-1; // auto
 566 int FSkip=0;
 567 void FCEUI_FrameSkip(int x)
 568 {
 569  FSkip=x;
 570 }
 571 #endif
 572
 573 /*      This is called at the beginning of each visible scanline */
 574 static void Loop6502(void)
 575 {
 576         uint32 tem;
 577         int x;
 578         uint8 *target=XBuf+scanline*320+32;
 579
 580         if(ScreenON || SpriteON)
 581         {
 582          /* PRefreshLine() will not get called on skipped frames.  This
 583             could cause a problem, but the solution would be rather complex,
 584             due to the current sprite 0 hit code.
 585          */
 586          #ifdef FRAMESKIP
 587          if(!FSkip)
 588          {
 589          #endif
 590           if(ScreenON)
 591           {
 592            if(scanline>=FSettings.FirstSLine && scanline<=FSettings.LastSLine)
 593             BGRender(target);
 594            else
 595            {
 596             if(PPU_hook)
 597              PRefreshLine();
 598            }
 599           }
 600           else
 601           {
 602            tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
 603            tem|=0x40404040;
 604            FCEU_dwmemset(target,tem,264);
 605           }
 606          #ifdef FRAMESKIP
 607          }
 608          #endif
 609          if (SpriteON && scanline)
 610           RefreshSprite(target);
 611          #ifdef FRAMESKIP
 612          if(!FSkip)
 613          {
 614          #endif
 615           if(PPU[1]&0x01)
 616           {
 617            for(x=63;x>=0;x--)
 618             ((uint32 *)target)[x]=((uint32*)target)[x]&0xF0F0F0F0;
 619           }
 620 #ifdef GP2X
 621            if((PPU[1]>>5)==0x7) block_or(target, 256, 0xc0);
 622            else if(PPU[1]&0xE0) block_andor(target, 256, 0x3f, 0x40);
 623            else                 block_andor(target, 256, 0x3f, 0x80);
 624 #else
 625            if((PPU[1]>>5)==0x7)
 626             for(x=63;x>=0;x--)
 627              ((uint32 *)target)[x]=(((uint32*)target)[x])|0xc0c0c0c0;
 628            else if(PPU[1]&0xE0)
 629             for(x=63;x>=0;x--)
 630              ((uint32 *)target)[x]=(((uint32*)target)[x]&0x3f3f3f3f)|0x40404040;
 631            else
 632             for(x=63;x>=0;x--)
 633              ((uint32 *)target)[x]=(((uint32*)target)[x]&0x3f3f3f3f)|0x80808080;
 634 #endif
 635           // black borders
 636           ((uint32 *)target)[-2]=((uint32 *)target)[-1]=0;
 637           ((uint32 *)target)[64]=((uint32 *)target)[65]=0;
 638          #ifdef FRAMESKIP
 639          }
 640          #endif
 641         }
 642         else
 643         {
 644          tem=Pal[0]|(Pal[0]<<8)|(Pal[0]<<16)|(Pal[0]<<24);
 645          FCEU_dwmemset(target,tem,256);
 646         }
 647         if(InputScanlineHook)
 648          InputScanlineHook(target, scanline);
 649 }
 650
 651 #define PAL(c)  ((c)+cc)
 652
 653
 654 static void PRefreshLine(void)
 655 {
 656         uint32 vofs;
 657         uint8 X1;
 658
 659         vofs = 0;
 660         if (BGAdrHI) vofs = 0x1000;
 661
 662         vofs+=(RefreshAddr>>12)&7;
 663
 664         for(X1=33;X1;X1--)
 665         {
 666                 register uint8 no;
 667                 register uint8 zz2;
 668                 zz2=(uint8)((RefreshAddr>>10)&3);
 669                 PPU_hook(0x2000|(RefreshAddr&0xFFF));
 670                 no  = vnapage[zz2][(RefreshAddr&0x3ff)];
 671                 PPU_hook((no<<4)+vofs);
 672                 if((RefreshAddr&0x1f)==0x1f)
 673                  RefreshAddr^=0x41F;
 674                 else
 675                  RefreshAddr++;
 676         }
 677 }
 678
 679 /* This high-level graphics MMC5 emulation code was written
 680    for MMC5 carts in "CL" mode.  It's probably not totally
 681    correct for carts in "SL" mode.
 682    */
 683 static void RefreshLine_MMC5Hack1(uint8 *P, uint32 vofs)
 684 {
 685           int8 tochange, X1;
 686
 687           tochange=MMC5HackSPMode&0x1F;
 688
 689           for(X1=33;X1;X1--,P+=8)
 690           {
 691                 uint8 *C;
 692                 uint8 cc,zz,zz2;
 693                 uint32 vadr;
 694
 695                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 696                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 697                 {
 698                  uint8 xs,ys;
 699
 700                  xs=33-X1;
 701                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 702                  if(ys>=0x1E) ys-=0x1E;
 703                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 704
 705                  C = MMC5HackVROMPTR+vadr;
 706                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 707
 708                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 709                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 710                 }
 711                 else
 712                 {
 713                  zz=RefreshAddr&0x1F;
 714                  zz2=(RefreshAddr>>10)&3;
 715                  vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 716                  C = MMC5BGVRAMADR(vadr);
 717                  cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 718                  cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 719                 }
 720                 #include "fceline.h"
 721
 722                 if((RefreshAddr&0x1f)==0x1f)
 723                  RefreshAddr^=0x41F;
 724                 else
 725                  RefreshAddr++;
 726                 tochange--;
 727           }
 728 }
 729
 730 static void RefreshLine_MMC5Hack2(uint8 *P, uint32 vofs)
 731 {
 732           int8 tochange, X1;
 733
 734           tochange=MMC5HackSPMode&0x1F;
 735
 736           for(X1=33;X1;X1--,P+=8)
 737           {
 738                 uint8 *C;
 739                 uint8 cc;
 740                 uint8 zz2;
 741                 uint32 vadr;
 742
 743                 if((tochange<=0 && MMC5HackSPMode&0x40) ||
 744                    (tochange>0 && !(MMC5HackSPMode&0x40)))
 745                 {
 746                  uint8 xs,ys;
 747
 748                  xs=33-X1;
 749                  ys=((scanline>>3)+MMC5HackSPScroll)&0x1F;
 750                  if(ys>=0x1E) ys-=0x1E;
 751                  vadr=(MMC5HackExNTARAMPtr[xs|(ys<<5)]<<4)+(vofs&7);
 752
 753                  C = MMC5HackVROMPTR+vadr;
 754                  C += ((MMC5HackSPPage & 0x3f & MMC5HackVROMMask) << 12);
 755
 756                  cc=MMC5HackExNTARAMPtr[0x3c0+(xs>>2)+((ys&0x1C)<<1)];
 757                  cc=((cc >> ((xs&2) + ((ys&0x2)<<1))) &3) <<2;
 758                 }
 759                 else
 760                 {
 761                  C=MMC5HackVROMPTR;
 762                  zz2=(RefreshAddr>>10)&3;
 763                  vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 764                  C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 765                          MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 766                  vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 767                  cc = vadr;
 768                 }
 769                 #include "fceline.h"
 770                 if((RefreshAddr&0x1f)==0x1f)
 771                  RefreshAddr^=0x41F;
 772                 else
 773                  RefreshAddr++;
 774                 tochange--;
 775           }
 776 }
 777
 778 static void RefreshLine_MMC5Hack3(uint8 *P, uint32 vofs)
 779 {
 780           int8 X1;
 781
 782           for(X1=33;X1;X1--,P+=8)
 783           {
 784                 uint8 *C;
 785                 uint8 cc;
 786                 uint8 zz2;
 787                 uint32 vadr;
 788
 789                 C=MMC5HackVROMPTR;
 790                 zz2=(RefreshAddr>>10)&3;
 791                 vadr = (vnapage[zz2][RefreshAddr & 0x3ff] << 4) + vofs;
 792                 C += (((MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff]) & 0x3f &
 793                         MMC5HackVROMMask) << 12) + (vadr & 0xfff);
 794                 vadr = (MMC5HackExNTARAMPtr[RefreshAddr & 0x3ff] & 0xC0)>> 4;
 795                 cc = vadr;
 796
 797                 #include "fceline.h"
 798                 if((RefreshAddr&0x1f)==0x1f)
 799                  RefreshAddr^=0x41F;
 800                 else
 801                  RefreshAddr++;
 802           }
 803 }
 804
 805 static void RefreshLine_MMC5Hack4(uint8 *P, uint32 vofs)
 806 {
 807           int8 X1;
 808
 809           for(X1=33;X1;X1--,P+=8)
 810           {
 811                 uint8 *C;
 812                 uint8 cc,zz,zz2;
 813                 uint32 vadr;
 814
 815                 zz=RefreshAddr&0x1F;
 816                 zz2=(RefreshAddr>>10)&3;
 817                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 818                 C = MMC5BGVRAMADR(vadr);
 819                 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 820                 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 821
 822                 #include "fceline.h"
 823
 824                 if((RefreshAddr&0x1f)==0x1f)
 825                  RefreshAddr^=0x41F;
 826                 else
 827                  RefreshAddr++;
 828           }
 829 }
 830
 831 static void RefreshLine_PPU_hook(uint8 *P, uint32 vofs)
 832 {
 833          int8 X1;
 834
 835          for(X1=33;X1;X1--,P+=8)
 836          {
 837                 uint8 *C;
 838                 uint8 cc,zz,zz2;
 839                 uint32 vadr;
 840
 841                 zz=RefreshAddr&0x1F;
 842                 zz2=(RefreshAddr>>10)&3;
 843                 PPU_hook(0x2000|(RefreshAddr&0xFFF));
 844                 cc=vnapage[zz2][0x3c0+(zz>>2)+((RefreshAddr&0x380)>>4)];
 845                 cc=((cc >> ((zz&2) + ((RefreshAddr&0x40)>>4))) &3) <<2;
 846                 vadr=(vnapage[zz2][RefreshAddr&0x3ff]<<4)+vofs;
 847                 C = VRAMADR(vadr);
 848
 849                 #include "fceline.h"
 850
 851                 PPU_hook(vadr);
 852
 853                 if((RefreshAddr&0x1f)==0x1f)
 854                  RefreshAddr^=0x41F;
 855                 else
 856                  RefreshAddr++;
 857          }
 858 }
 859
 860 static void RefreshLine_normal(uint8 *P, uint32 vofs) // vofs is 0x107 max
 861 {
 862          int8 X1;
 863          uint32 rfraddr = RefreshAddr;
 864          uint8 *page = vnapage[(rfraddr>>10)&3];
 865          uint32 cc2=0;
 866
 867          if ((rfraddr&0xc)!=0)
 868           cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 869
 870          for (X1=33;X1;X1--,P+=8)
 871          {
 872                 uint8 cc,*C;
 873                 uint32 vadr;
 874
 875                 vadr=(page[rfraddr&0x3ff]<<4)+vofs;
 876                 C = VRAMADR(vadr);
 877                 if ((rfraddr&0xc)==0)
 878                  cc2=*(uint32 *) (page + ((rfraddr&0x380)>>4) + ((rfraddr&0x10)>>2) + 0x3c0);
 879                 cc=((cc2 >> ((rfraddr&2) + ((rfraddr&0x40)>>4) + ((rfraddr&0xc)<<1))) & 3) << 2;
 880
 881                 #include "fceline.h"
 882
 883                 if((rfraddr&0x1f)==0x1f) {
 884                  rfraddr^=0x41F;
 885                  page = vnapage[(rfraddr>>10)&3];
 886                 } else
 887                  rfraddr++;
 888          }
 889          RefreshAddr = rfraddr;
 890 }
 891
 892 static void SetRefreshLine(void)
 893 {
 894         if(MMC5Hack && geniestage!=1)
 895         {
 896          if(MMC5HackCHRMode==0 && (MMC5HackSPMode&0x80))
 897          {
 898                  if (RefreshLine != RefreshLine_MMC5Hack1) printf("set refr RefreshLine_MMC5Hack1\n");
 899                  RefreshLine = RefreshLine_MMC5Hack1;
 900          }
 901          else if(MMC5HackCHRMode==1 && (MMC5HackSPMode&0x80))
 902          {
 903                 if (RefreshLine != RefreshLine_MMC5Hack2) printf("set refr RefreshLine_MMC5Hack2\n");
 904                  RefreshLine = RefreshLine_MMC5Hack2;
 905          }
 906          else if(MMC5HackCHRMode==1)
 907          {
 908                 if (RefreshLine != RefreshLine_MMC5Hack3) printf("set refr RefreshLine_MMC5Hack3\n");
 909                  RefreshLine = RefreshLine_MMC5Hack3;
 910          }
 911          else
 912          {
 913                 if (RefreshLine != RefreshLine_MMC5Hack4) printf("set refr RefreshLine_MMC5Hack4\n");
 914                  RefreshLine = RefreshLine_MMC5Hack4;
 915          }
 916         }       // End if(MMC5Hack)
 917         else if(PPU_hook)
 918         {
 919                 if (RefreshLine != RefreshLine_PPU_hook) printf("set refr RefreshLine_PPU_hook\n");
 920                 RefreshLine = RefreshLine_PPU_hook;
 921         }
 922         else
 923         {
 924                 if (RefreshLine != RefreshLine_normal) printf("set refr RefreshLine_normal\n");
 925                 RefreshLine = RefreshLine_normal;
 926         }
 927 }
 928
 929 static INLINE
 930 void Fixit2(void)
 931 {
 932    if(ScreenON || SpriteON)
 933    {
 934     uint32 rad=RefreshAddr;
 935     rad&=0xFBE0;
 936     rad|=TempAddr&0x041f;
 937     RefreshAddr=rad;
 938     //PPU_hook(RefreshAddr,-1);
 939    }
 940 }
 941
 942 static INLINE
 943 void Fixit1(void)
 944 {
 945    if(ScreenON || SpriteON)
 946    {
 947     uint32 rad=RefreshAddr;
 948
 949     if((rad&0x7000)==0x7000)
 950     {
 951      rad^=0x7000;
 952      if((rad&0x3E0)==0x3A0)
 953      {
 954       rad^=0x3A0;
 955       rad^=0x800;
 956      }
 957      else
 958      {
 959       if((rad&0x3E0)==0x3e0)
 960        rad^=0x3e0;
 961       else rad+=0x20;
 962      }
 963     }
 964     else
 965      rad+=0x1000;
 966     RefreshAddr=rad;
 967     //PPU_hook(RefreshAddr,-1);
 968    }
 969 }
 970
 971
 972 /*      This is called at the beginning of all h-blanks on visible lines. */
 973 static void DoHBlank(void)
 974 {
 975  if(ScreenON || SpriteON)
 976   FetchSpriteData();
 977  if(GameHBIRQHook && (ScreenON || SpriteON) && ((PPU[0]&0x38)!=0x18))
 978  {
 979   X6502_Run(6);
 980   Fixit2();
 981   X6502_Run(4);
 982   GameHBIRQHook();
 983   X6502_Run(85-16-10);
 984  }
 985  else
 986  {
 987   X6502_Run(6);  // Tried 65, caused problems with Slalom(maybe others)
 988   Fixit2();
 989   X6502_Run(85-6-16);
 990  }
 991  if(GameHBIRQHook2 && (ScreenON || SpriteON))
 992   GameHBIRQHook2();
 993  //PPU_hook(0,-1);
 994  //fprintf(stderr,"%3d: $%04x\n",scanline,RefreshAddr);
 995  scanline++;
 996  if (scanline<240)
 997   ResetRL();
 998  X6502_Run(16);
 999 }
1000
1001
1002 // ============================//
1003 // end of new code
1004 // ===========================//
1005
1006 void ResetMapping(void)
1007 {
1008         int x;
1009
1010         SetReadHandler(0x0000,0xFFFF,ANull);
1011         SetWriteHandler(0x0000,0xFFFF,BNull);
1012
1013         SetReadHandler(0,0x7FF,ARAML);
1014         SetWriteHandler(0,0x7FF,BRAML);
1015
1016         SetReadHandler(0x800,0x1FFF,ARAMH);  /* Part of a little */
1017         SetWriteHandler(0x800,0x1FFF,BRAMH); /* hack for a small speed boost. */
1018
1019         for(x=0x2000;x<0x4000;x+=8)
1020         {
1021          ARead[x]=A200x;
1022          BWrite[x]=B2000;
1023          ARead[x+1]=A200x;
1024          BWrite[x+1]=B2001;
1025          ARead[x+2]=A2002;
1026          BWrite[x+2]=B2002;
1027          ARead[x+3]=A200x;
1028          BWrite[x+3]=B2003;
1029          ARead[x+4]=A200x;
1030          BWrite[x+4]=B2004;
1031          ARead[x+5]=A200x;
1032          BWrite[x+5]=B2005;
1033          ARead[x+6]=A200x;
1034          BWrite[x+6]=B2006;
1035          ARead[x+7]=A2007;
1036          BWrite[x+7]=B2007;
1037         }
1038
1039         BWrite[0x4014]=B4014;
1040         SetNESSoundMap();
1041         InitializeInput();
1042 }
1043
1044 int GameLoaded=0;
1045 void CloseGame(void)
1046 {
1047  if(GameLoaded)
1048  {
1049   if(FCEUGameInfo.type!=GIT_NSF)
1050    FCEU_FlushGameCheats(0,0);
1051   #ifdef NETWORK
1052   if(FSettings.NetworkPlay) KillNetplay();
1053   #endif
1054   GameInterface(GI_CLOSE);
1055   CloseGenie();
1056   GameLoaded=0;
1057  }
1058 }
1059
1060 void ResetGameLoaded(void)
1061 {
1062         if(GameLoaded) CloseGame();
1063         GameStateRestore=0;
1064         PPU_hook=0;
1065         GameHBIRQHook=GameHBIRQHook2=0;
1066         GameExpSound.Fill=0;
1067         GameExpSound.RChange=0;
1068         if(GameExpSound.Kill)
1069          GameExpSound.Kill();
1070         GameExpSound.Kill=0;
1071         MapIRQHook=0;
1072         MMC5Hack=0;
1073         PAL&=1;
1074         pale=0;
1075
1076         FCEUGameInfo.name=0;
1077         FCEUGameInfo.type=GIT_CART;
1078         FCEUGameInfo.vidsys=GIV_USER;
1079         FCEUGameInfo.input[0]=FCEUGameInfo.input[1]=-1;
1080         FCEUGameInfo.inputfc=-1;
1081 }
1082
1083 char lastLoadedGameName [2048];
1084 int UNIFLoad(const char *name, int fp);
1085 int iNESLoad(const char *name, int fp);
1086 int FDSLoad(const char *name, int fp);
1087 int NSFLoad(int fp);
1088
1089 FCEUGI *FCEUI_LoadGame(char *name)
1090 {
1091         char name2[512];
1092         int have_movie = 0;
1093         int fp;
1094
1095         Exit=1;
1096         ResetGameLoaded();
1097
1098         strncpy(name2, name, sizeof(name2));
1099         name2[sizeof(name2)-1] = 0;
1100
1101         fp=FCEU_fopen(name2,"rb");
1102         if(!fp)
1103         {
1104          FCEU_PrintError("Error opening \"%s\"!",name);
1105          return 0;
1106         }
1107
1108         {
1109          char *p = name2 + strlen(name2) - 4;
1110          if (strcmp(p, ".fcm") == 0)
1111          {
1112           // movie detected
1113           printf("movie detected\n");
1114           FCEU_fclose(fp);
1115           *p = 0;
1116           fp=FCEU_fopen(name2,"rb");
1117           if (!fp) {
1118            printf("no ROM for movie\n");
1119            return 0;
1120           }
1121           have_movie = 1;
1122          }
1123         }
1124
1125         strcpy(lastLoadedGameName, name2);
1126
1127         GetFileBase(name2);
1128         if(iNESLoad(name2,fp))
1129          goto endlseq;
1130         if(NSFLoad(fp))
1131          goto endlseq;
1132         if(FDSLoad(name2,fp))
1133          goto endlseq;
1134         if(UNIFLoad(name2,fp))
1135          goto endlseq;
1136
1137         FCEU_PrintError("An error occurred while loading the file.");
1138         FCEU_fclose(fp);
1139         return 0;
1140
1141         endlseq:
1142         FCEU_fclose(fp);
1143         GameLoaded=1;
1144
1145         FCEU_ResetVidSys();
1146         if(FCEUGameInfo.type!=GIT_NSF)
1147          if(FSettings.GameGenie)
1148           OpenGenie();
1149
1150         PowerNES();
1151         #ifdef NETWORK
1152         if(FSettings.NetworkPlay) InitNetplay();
1153         #endif
1154         SaveStateRefresh();
1155         if(FCEUGameInfo.type!=GIT_NSF)
1156         {
1157          FCEU_LoadGamePalette();
1158          FCEU_LoadGameCheats(0);
1159         }
1160
1161         FCEU_ResetPalette();
1162         Exit=0;
1163
1164         if (have_movie)
1165                 FCEUI_LoadMovie(name, 1);
1166         return(&FCEUGameInfo);
1167 }
1168
1169
1170 void FCEU_ResetVidSys(void)
1171 {
1172  int w;
1173
1174  if(FCEUGameInfo.vidsys==GIV_NTSC)
1175   w=0;
1176  else if(FCEUGameInfo.vidsys==GIV_PAL)
1177   w=1;
1178  else
1179   w=FSettings.PAL;
1180
1181  if(w)
1182  {
1183   PAL=1;
1184   FSettings.FirstSLine=FSettings.UsrFirstSLine[1];
1185   FSettings.LastSLine=FSettings.UsrLastSLine[1];
1186  }
1187  else
1188  {
1189   PAL=0;
1190   FSettings.FirstSLine=FSettings.UsrFirstSLine[0];
1191   FSettings.LastSLine=FSettings.UsrLastSLine[0];
1192  }
1193  printf("ResetVidSys: PAL = %i\n", PAL);
1194  SetSoundVariables();
1195 }
1196
1197 int FCEUI_Initialize(void)
1198 {
1199         if(!InitVirtualVideo())
1200          return 0;
1201         memset(&FSettings,0,sizeof(FSettings));
1202         FSettings.UsrFirstSLine[0]=8;
1203         FSettings.UsrFirstSLine[1]=0;
1204         FSettings.UsrLastSLine[0]=FSettings.UsrLastSLine[1]=239;
1205         FSettings.SoundVolume=100;
1206         return 1;
1207 }
1208
1209 void MMC5_hb(int);     /* Ugh ugh ugh. */
1210 static INLINE void Thingo(void)
1211 {
1212    Loop6502();
1213
1214    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1215
1216    // check: Battletoads & Double Dragon
1217    if(tosprite>=256)
1218    {
1219     X6502_Run(256);
1220    }
1221    else
1222    {
1223      // sky glitches in SMB1 if done wrong
1224      X6502_Run(tosprite);
1225      PPU[2]|=0x40;
1226      X6502_Run(256-tosprite);
1227      tosprite = 256;
1228    }
1229    TryFixit1();
1230    DoHBlank();
1231 }
1232
1233 void EmLoop(void)
1234 {
1235  for(;;)
1236  {
1237   int x;
1238   uint32 scanlines_per_frame = PAL ? 312 : 262;
1239   UpdateInput();
1240   FCEU_ApplyPeriodicCheats();
1241
1242   // FCEUPPU_Loop:
1243   if(ppudead) /* Needed for Knight Rider, possibly others. */
1244   {
1245    //memset(XBuf, 0, 320*240);
1246    X6502_Run(scanlines_per_frame*(256+85));
1247    ppudead--;
1248    goto update;
1249   }
1250
1251   X6502_Run(256+85);
1252
1253   PPU[2]|=0x80;
1254   PPU[3]=PPUSPL=0;             /* Not sure if this is correct.  According
1255                                   to Matt Conte and my own tests, it is.  Timing is probably
1256                                   off, though.  NOTE:  Not having this here
1257                                   breaks a Super Donkey Kong game. */
1258
1259   X6502_Run(12);                /* I need to figure out the true nature and length
1260                                    of this delay.
1261                                 */
1262   if(FCEUGameInfo.type==GIT_NSF)
1263    DoNSFFrame();
1264   else if(VBlankON)
1265    TriggerNMI();
1266
1267   // Note: this is needed for asm core
1268   // Warning: using 'scanline' var here breaks Castlevania III
1269   {
1270    int lines;
1271    X6502_Run(256+85-12);
1272    for (lines=scanlines_per_frame-242-1;lines;lines--)
1273      X6502_Run(256+85);
1274   }
1275   // X6502_Run((scanlines_per_frame-242)*(256+85)-12);
1276   PPU_status&=0x1f;
1277   X6502_Run(256);
1278
1279   {
1280    if(ScreenON || SpriteON)
1281    {
1282     if(GameHBIRQHook)
1283      GameHBIRQHook();
1284      if(PPU_hook)
1285       for(x=0;x<42;x++) {PPU_hook(0x2000); PPU_hook(0);} // ugh
1286     if(GameHBIRQHook2)
1287      GameHBIRQHook2();
1288    }
1289
1290    X6502_Run(85-16);
1291
1292    if(ScreenON || SpriteON)
1293    {
1294     RefreshAddr=TempAddr;
1295     if(PPU_hook) PPU_hook(RefreshAddr&0x3fff);
1296    }
1297    ResetRL();
1298
1299    X6502_Run(16-kook);
1300    kook ^= 1;
1301   }
1302
1303   if(FCEUGameInfo.type==GIT_NSF)
1304   {
1305    // run scanlines for asm core to fuction
1306    for(scanline=0;scanline<240;scanline++)
1307     X6502_Run(256+85);
1308   }
1309   else
1310   {
1311    int x,max,maxref;
1312
1313    deemp=PPU[1]>>5;
1314    SetRefreshLine();
1315    for(scanline=0;scanline<240;)       // scanline is incremented in  DoLine.  Evil. :/
1316    {
1317     deempcnt[deemp]++;
1318     Thingo();
1319    }
1320    if(MMC5Hack && (ScreenON || SpriteON)) MMC5_hb(scanline);
1321    for(x=1,max=0,maxref=0;x<7;x++)
1322    {
1323     if(deempcnt[x]>max)
1324     {
1325      max=deempcnt[x];
1326      maxref=x;
1327     }
1328     deempcnt[x]=0;
1329    }
1330    SetNESDeemph(maxref,0);
1331   }
1332
1333 update:
1334   {
1335    int ssize;
1336
1337    ssize=FlushEmulateSound();
1338
1339    timestampbase += timestamp;
1340    timestamp = 0;
1341
1342    #ifdef FRAMESKIP
1343    if(FSkip)
1344    {
1345     FCEU_PutImageDummy();
1346     FSkip--;
1347     FCEUD_Update(0,WaveFinalMono,ssize);
1348    }
1349    else
1350    #endif
1351    {
1352     FCEU_PutImage();
1353     FCEUD_Update(XBuf+8,WaveFinalMono,ssize);
1354    }
1355   }
1356
1357   if(Exit)
1358   {
1359    CloseGame();
1360    break;
1361   }
1362
1363  } // for
1364 }
1365
1366 #ifdef FPS
1367 #include <sys/time.h>
1368 uint64 frcount;
1369 #endif
1370 void FCEUI_Emulate(void)
1371 {
1372         #ifdef FPS
1373         uint64 starttime,end;
1374         struct timeval tv;
1375         frcount=0;
1376         gettimeofday(&tv,0);
1377         starttime=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1378         #endif
1379         EmLoop();
1380
1381         #ifdef FPS
1382         // Probably won't work well on Windows port; for
1383         // debugging/speed testing.
1384         {
1385          uint64 w;
1386          int i,frac;
1387          gettimeofday(&tv,0);
1388          end=((uint64)tv.tv_sec*1000000)+tv.tv_usec;
1389          w=frcount*10000000000LL/(end-starttime);
1390          i=w/10000;
1391          frac=w-i*10000;
1392          printf("Average FPS: %d.%04d\n",i,frac);
1393         }
1394         #endif
1395
1396 }
1397
1398 void FCEUI_CloseGame(void)
1399 {
1400         Exit=1;
1401 }
1402
1403 static void ResetPPU(void)
1404 {
1405         VRAMBuffer=PPU[0]=PPU[1]=PPU[2]=PPU[3]=0;
1406         PPUSPL=0;
1407         PPUGenLatch=0;
1408         RefreshAddr=TempAddr=0;
1409         vtoggle = 0;
1410         ppudead = 2;
1411         kook = 0;
1412 }
1413
1414 static void PowerPPU(void)
1415 {
1416         memset(NTARAM,0x00,0x800);
1417         memset(PALRAM,0x00,0x20);
1418         memset(SPRAM,0x00,0x100);
1419         ResetPPU();
1420 }
1421
1422 void ResetNES(void)
1423 {
1424         if(!GameLoaded) return;
1425         GameInterface(GI_RESETM2);
1426         ResetSound();
1427         ResetPPU();
1428         X6502_Reset();
1429 }
1430
1431 static void FCEU_MemoryRand(uint8 *ptr, uint32 size)
1432 {
1433  int x=0;
1434  while(size)
1435  {
1436   *ptr=(x&4)?0xFF:0x00;
1437   x++;
1438   size--;
1439   ptr++;
1440  }
1441 }
1442
1443 void PowerNES(void)
1444 {
1445         if(!GameLoaded) return;
1446
1447         FCEU_CheatResetRAM();
1448         FCEU_CheatAddRAM(2,0,RAM);
1449
1450         GeniePower();
1451
1452 #ifndef DEBUG_ASM_6502
1453         FCEU_MemoryRand(RAM,0x800);
1454 #else
1455         memset(RAM,0x00,0x800);
1456 #endif
1457         ResetMapping();
1458         GameInterface(GI_POWER);
1459         PowerSound();
1460         PowerPPU();
1461         timestampbase=0;
1462 #ifdef ASM_6502
1463         if (geniestage)
1464          GenieSetPages(0);
1465 #endif
1466         X6502_Power();
1467 }
1468
1469
1470 /* savestate stuff */
1471 uint16 TempAddrT,RefreshAddrT;
1472
1473 SFORMAT FCEUPPU_STATEINFO[]={
1474  { NTARAM, 0x800, "NTAR"},
1475  { PALRAM, 0x20, "PRAM"},
1476  { SPRAM, 0x100, "SPRA"},
1477  { PPU, 0x4, "PPUR"},
1478  { &XOffset, 1, "XOFF"},
1479  { &vtoggle, 1, "VTOG"},
1480  { &RefreshAddrT, 2|RLSB, "RADD"},
1481  { &TempAddrT, 2|RLSB, "TADD"},
1482  { &VRAMBuffer, 1, "VBUF"},
1483  { &PPUGenLatch, 1, "PGEN"},
1484  // from 0.98.15
1485  { &kook, 1, "KOOK"},
1486  { &ppudead, 1, "DEAD"},
1487  { &PPUSPL, 1, "PSPL"},
1488  { 0 }
1489  };
1490
1491