snes9xgx/source/snes9x/snapshot.cpp

/**********************************************************************************
  Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.

  (c) Copyright 1996 - 2002  Gary Henderson (gary.henderson@ntlworld.com) and
                             Jerremy Koot (jkoot@snes9x.com)

  (c) Copyright 2002 - 2004  Matthew Kendora

  (c) Copyright 2002 - 2005  Peter Bortas (peter@bortas.org)

  (c) Copyright 2004 - 2005  Joel Yliluoma (http://iki.fi/bisqwit/)

  (c) Copyright 2001 - 2006  John Weidman (jweidman@slip.net)

  (c) Copyright 2002 - 2006  Brad Jorsch (anomie@users.sourceforge.net),
                             funkyass (funkyass@spam.shaw.ca),
                             Kris Bleakley (codeviolation@hotmail.com),
                             Nach (n-a-c-h@users.sourceforge.net), and
                             zones (kasumitokoduck@yahoo.com)

  BS-X C emulator code
  (c) Copyright 2005 - 2006  Dreamer Nom,
                             zones

  C4 x86 assembler and some C emulation code
  (c) Copyright 2000 - 2003  _Demo_ (_demo_@zsnes.com),
                             Nach,
                             zsKnight (zsknight@zsnes.com)

  C4 C++ code
  (c) Copyright 2003 - 2006  Brad Jorsch,
                             Nach

  DSP-1 emulator code
  (c) Copyright 1998 - 2006  _Demo_,
                             Andreas Naive (andreasnaive@gmail.com)
                             Gary Henderson,
                             Ivar (ivar@snes9x.com),
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora,
                             Nach,
                             neviksti (neviksti@hotmail.com)

  DSP-2 emulator code
  (c) Copyright 2003         John Weidman,
                             Kris Bleakley,
                             Lord Nightmare (lord_nightmare@users.sourceforge.net),
                             Matthew Kendora,
                             neviksti


  DSP-3 emulator code
  (c) Copyright 2003 - 2006  John Weidman,
                             Kris Bleakley,
                             Lancer,
                             z80 gaiden

  DSP-4 emulator code
  (c) Copyright 2004 - 2006  Dreamer Nom,
                             John Weidman,
                             Kris Bleakley,
                             Nach,
                             z80 gaiden

  OBC1 emulator code
  (c) Copyright 2001 - 2004  zsKnight,
                             pagefault (pagefault@zsnes.com),
                             Kris Bleakley,
                             Ported from x86 assembler to C by sanmaiwashi

  SPC7110 and RTC C++ emulator code
  (c) Copyright 2002         Matthew Kendora with research by
                             zsKnight,
                             John Weidman,
                             Dark Force

  S-DD1 C emulator code
  (c) Copyright 2003         Brad Jorsch with research by
                             Andreas Naive,
                             John Weidman

  S-RTC C emulator code
  (c) Copyright 2001-2006    byuu,
                             John Weidman

  ST010 C++ emulator code
  (c) Copyright 2003         Feather,
                             John Weidman,
                             Kris Bleakley,
                             Matthew Kendora

  Super FX x86 assembler emulator code
  (c) Copyright 1998 - 2003  _Demo_,
                             pagefault,
                             zsKnight,

  Super FX C emulator code
  (c) Copyright 1997 - 1999  Ivar,
                             Gary Henderson,
                             John Weidman

  Sound DSP emulator code is derived from SNEeSe and OpenSPC:
  (c) Copyright 1998 - 2003  Brad Martin
  (c) Copyright 1998 - 2006  Charles Bilyue'

  SH assembler code partly based on x86 assembler code
  (c) Copyright 2002 - 2004  Marcus Comstedt (marcus@mc.pp.se)

  2xSaI filter
  (c) Copyright 1999 - 2001  Derek Liauw Kie Fa

  HQ2x filter
  (c) Copyright 2003         Maxim Stepin (maxim@hiend3d.com)

  Specific ports contains the works of other authors. See headers in
  individual files.

  Snes9x homepage: http://www.snes9x.com

  Permission to use, copy, modify and/or distribute Snes9x in both binary
  and source form, for non-commercial purposes, is hereby granted without 
  fee, providing that this license information and copyright notice appear 
  with all copies and any derived work.

  This software is provided 'as-is', without any express or implied
  warranty. In no event shall the authors be held liable for any damages
  arising from the use of this software or it's derivatives.

  Snes9x is freeware for PERSONAL USE only. Commercial users should
  seek permission of the copyright holders first. Commercial use includes,
  but is not limited to, charging money for Snes9x or software derived from
  Snes9x, including Snes9x or derivatives in commercial game bundles, and/or
  using Snes9x as a promotion for your commercial product.

  The copyright holders request that bug fixes and improvements to the code
  should be forwarded to them so everyone can benefit from the modifications
  in future versions.

  Super NES and Super Nintendo Entertainment System are trademarks of
  Nintendo Co., Limited and its subsidiary companies.
**********************************************************************************/

#include <string.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#endif
#include <ctype.h>
#include <stdlib.h>
#include <time.h>

#if defined(__unix) || defined(__linux) || defined(__sun) || defined(__DJGPP)
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#endif

#include "snapshot.h"

#ifndef NGC
#include "snaporig.h"
#endif

#include "memmap.h"
#include "snes9x.h"
#include "65c816.h"
#include "ppu.h"
#include "cpuexec.h"
#include "display.h"
#include "apu.h"
#include "soundux.h"
#include "sa1.h"
#include "bsx.h"
#include "srtc.h"
#include "sdd1.h"
#include "spc7110.h"
#include "movie.h"
#include "controls.h"
#include "memfile.h"
#include "gccore.h"
#include "ftfont.h"

extern uint8 *SRAM;

#ifdef ZSNES_FX
START_EXTERN_C
void S9xSuperFXPreSaveState ();
void S9xSuperFXPostSaveState ();
void S9xSuperFXPostLoadState ();
END_EXTERN_C
#endif

void S9xResetSaveTimer(bool8 dontsave){
    static time_t t=-1;

    if(!dontsave && t!=-1 && time(NULL)-t>300){{
#ifndef NGC	    
        char def [PATH_MAX];
        char filename [PATH_MAX];
        char drive [_MAX_DRIVE];
        char dir [_MAX_DIR];
        char ext [_MAX_EXT];

        _splitpath(Memory.ROMFilename, drive, dir, def, ext);
        sprintf(filename, "%s%s%s.%.*s", S9xGetDirectory(SNAPSHOT_DIR),
                SLASH_STR, def, _MAX_EXT-1, "oops");
        S9xMessage(S9X_INFO, S9X_FREEZE_FILE_INFO, "Auto-saving 'oops' savestate");
        Snapshot(filename);
#endif	    
    }}
    t=time(NULL);
}

bool8 S9xUnfreezeZSNES (const char *filename);

typedef struct {
    int offset;
    int size;
    int type;
    uint16 debuted_in, deleted_in;
} FreezeData;

enum {
    INT_V, uint8_ARRAY_V, uint16_ARRAY_V, uint32_ARRAY_V
};

static struct Obsolete {
    uint8 SPPU_Joypad1ButtonReadPos;
    uint8 SPPU_Joypad2ButtonReadPos;
    uint8 SPPU_Joypad3ButtonReadPos;
    uint8 SPPU_MouseSpeed[2];
    uint8 SAPU_Flags;
} Obsolete;

#define Offset(field,structure) \
((int) (((char *) (&(((structure)NULL)->field))) - ((char *) NULL)))
#define DUMMY(f) Offset(f,struct Obsolete *)
#define DELETED(f) (-1)

#define COUNT(ARRAY) (sizeof (ARRAY) / sizeof (ARRAY[0]))

struct SnapshotMovieInfo
{
	uint32	MovieInputDataSize;
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SnapshotMovieInfo *)

#ifndef NGC
static FreezeData SnapMovie [] = {
    {OFFSET (MovieInputDataSize), 4, INT_V, 1, 9999},
};
#endif

#undef OFFSET
#define OFFSET(f) Offset(f,struct SCPUState *)

static FreezeData SnapCPU [] = {
    {OFFSET (Flags),               4, INT_V, 1, 9999},
    {OFFSET (BranchSkip),          1, INT_V, 1, 9999},
    {OFFSET (NMIActive),           1, INT_V, 1, 9999},
    {OFFSET (IRQActive),           1, INT_V, 1, 9999},
    {OFFSET (WaitingForInterrupt), 1, INT_V, 1, 9999},
    {OFFSET (WhichEvent),          1, INT_V, 1, 9999},
    {OFFSET (Cycles),              4, INT_V, 1, 9999},
    {OFFSET (NextEvent),           4, INT_V, 1, 9999},
    {OFFSET (V_Counter),           4, INT_V, 1, 9999},
    {OFFSET (MemSpeed),            4, INT_V, 1, 9999},
    {OFFSET (MemSpeedx2),          4, INT_V, 1, 9999},
    {OFFSET (FastROMSpeed),        4, INT_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SRegisters *)

static FreezeData SnapRegisters [] = {
    {OFFSET (PB),  1, INT_V, 1, 9999},
    {OFFSET (DB),  1, INT_V, 1, 9999},
    {OFFSET (P.W), 2, INT_V, 1, 9999},
    {OFFSET (A.W), 2, INT_V, 1, 9999},
    {OFFSET (D.W), 2, INT_V, 1, 9999},
    {OFFSET (S.W), 2, INT_V, 1, 9999},
    {OFFSET (X.W), 2, INT_V, 1, 9999},
    {OFFSET (Y.W), 2, INT_V, 1, 9999},
    {OFFSET (PCw), 2, INT_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SPPU *)

static FreezeData SnapPPU [] = {
    {OFFSET (BGMode),               1, INT_V, 1, 9999},
    {OFFSET (BG3Priority),          1, INT_V, 1, 9999},
    {OFFSET (Brightness),           1, INT_V, 1, 9999},
    {OFFSET (VMA.High),             1, INT_V, 1, 9999},
    {OFFSET (VMA.Increment),        1, INT_V, 1, 9999},
    {OFFSET (VMA.Address),          2, INT_V, 1, 9999},
    {OFFSET (VMA.Mask1),            2, INT_V, 1, 9999},
    {OFFSET (VMA.FullGraphicCount), 2, INT_V, 1, 9999},
    {OFFSET (VMA.Shift),            2, INT_V, 1, 9999},
    {OFFSET (BG[0].SCBase),         2, INT_V, 1, 9999},
    {OFFSET (BG[0].VOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[0].HOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[0].BGSize),         1, INT_V, 1, 9999},
    {OFFSET (BG[0].NameBase),       2, INT_V, 1, 9999},
    {OFFSET (BG[0].SCSize),         2, INT_V, 1, 9999},
	
    {OFFSET (BG[1].SCBase),         2, INT_V, 1, 9999},
    {OFFSET (BG[1].VOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[1].HOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[1].BGSize),         1, INT_V, 1, 9999},
    {OFFSET (BG[1].NameBase),       2, INT_V, 1, 9999},
    {OFFSET (BG[1].SCSize),         2, INT_V, 1, 9999},
	
    {OFFSET (BG[2].SCBase),         2, INT_V, 1, 9999},
    {OFFSET (BG[2].VOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[2].HOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[2].BGSize),         1, INT_V, 1, 9999},
    {OFFSET (BG[2].NameBase),       2, INT_V, 1, 9999},
    {OFFSET (BG[2].SCSize),         2, INT_V, 1, 9999},
	
    {OFFSET (BG[3].SCBase),         2, INT_V, 1, 9999},
    {OFFSET (BG[3].VOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[3].HOffset),        2, INT_V, 1, 9999},
    {OFFSET (BG[3].BGSize),         1, INT_V, 1, 9999},
    {OFFSET (BG[3].NameBase),       2, INT_V, 1, 9999},
    {OFFSET (BG[3].SCSize),         2, INT_V, 1, 9999},
	
    {OFFSET (CGFLIP),               1, INT_V, 1, 9999},
    {OFFSET (CGDATA),               256, uint16_ARRAY_V, 1, 9999},
    {OFFSET (FirstSprite),          1, INT_V, 1, 9999},
#define O(N) \
    {OFFSET (OBJ[N].HPos),          2, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].VPos),          2, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].Name),          2, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].VFlip),         1, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].HFlip),         1, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].Priority),      1, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].Palette),       1, INT_V, 1, 9999}, \
    {OFFSET (OBJ[N].Size),          1, INT_V, 1, 9999}
	
    O(  0), O(  1), O(  2), O(  3), O(  4), O(  5), O(  6), O(  7),
    O(  8), O(  9), O( 10), O( 11), O( 12), O( 13), O( 14), O( 15),
    O( 16), O( 17), O( 18), O( 19), O( 20), O( 21), O( 22), O( 23),
    O( 24), O( 25), O( 26), O( 27), O( 28), O( 29), O( 30), O( 31),
    O( 32), O( 33), O( 34), O( 35), O( 36), O( 37), O( 38), O( 39),
    O( 40), O( 41), O( 42), O( 43), O( 44), O( 45), O( 46), O( 47),
    O( 48), O( 49), O( 50), O( 51), O( 52), O( 53), O( 54), O( 55),
    O( 56), O( 57), O( 58), O( 59), O( 60), O( 61), O( 62), O( 63),
    O( 64), O( 65), O( 66), O( 67), O( 68), O( 69), O( 70), O( 71),
    O( 72), O( 73), O( 74), O( 75), O( 76), O( 77), O( 78), O( 79),
    O( 80), O( 81), O( 82), O( 83), O( 84), O( 85), O( 86), O( 87),
    O( 88), O( 89), O( 90), O( 91), O( 92), O( 93), O( 94), O( 95),
    O( 96), O( 97), O( 98), O( 99), O(100), O(101), O(102), O(103),
    O(104), O(105), O(106), O(107), O(108), O(109), O(110), O(111),
    O(112), O(113), O(114), O(115), O(116), O(117), O(118), O(119),
    O(120), O(121), O(122), O(123), O(124), O(125), O(126), O(127),
#undef O
    {OFFSET (OAMPriorityRotation),       1, INT_V, 1, 9999},
    {OFFSET (OAMAddr),                   2, INT_V, 1, 9999},
    {OFFSET (OAMFlip),                   1, INT_V, 1, 9999},
    {OFFSET (OAMTileAddress),            2, INT_V, 1, 9999},
    {OFFSET (IRQVBeamPos),               2, INT_V, 1, 9999},
    {OFFSET (IRQHBeamPos),               2, INT_V, 1, 9999},
    {OFFSET (VBeamPosLatched),           2, INT_V, 1, 9999},
    {OFFSET (HBeamPosLatched),           2, INT_V, 1, 9999},
    {OFFSET (HBeamFlip),                 1, INT_V, 1, 9999},
    {OFFSET (VBeamFlip),                 1, INT_V, 1, 9999},
    {OFFSET (HVBeamCounterLatched),      1, INT_V, 1, 9999},
    {OFFSET (MatrixA),                   2, INT_V, 1, 9999},
    {OFFSET (MatrixB),                   2, INT_V, 1, 9999},
    {OFFSET (MatrixC),                   2, INT_V, 1, 9999},
    {OFFSET (MatrixD),                   2, INT_V, 1, 9999},
    {OFFSET (CentreX),                   2, INT_V, 1, 9999},
    {OFFSET (CentreY),                   2, INT_V, 1, 9999},
    {OFFSET (M7HOFS),                    2, INT_V, 2, 9999},
    {OFFSET (M7VOFS),                    2, INT_V, 2, 9999},
    {DUMMY  (SPPU_Joypad1ButtonReadPos), 1, INT_V, 1, 2},
    {DUMMY  (SPPU_Joypad2ButtonReadPos), 1, INT_V, 1, 2},
    {DUMMY  (SPPU_Joypad3ButtonReadPos), 1, INT_V, 1, 2},
    {OFFSET (CGADD),                     1, INT_V, 1, 9999},
    {OFFSET (FixedColourRed),            1, INT_V, 1, 9999},
    {OFFSET (FixedColourGreen),          1, INT_V, 1, 9999},
    {OFFSET (FixedColourBlue),           1, INT_V, 1, 9999},
    {OFFSET (SavedOAMAddr),              2, INT_V, 1, 9999},
    {OFFSET (ScreenHeight),              2, INT_V, 1, 9999},
    {OFFSET (WRAM),                      4, INT_V, 1, 9999},
    {OFFSET (ForcedBlanking),            1, INT_V, 1, 9999},
    {OFFSET (OBJNameSelect),             2, INT_V, 1, 9999},
    {OFFSET (OBJSizeSelect),             1, INT_V, 1, 9999},
    {OFFSET (OBJNameBase),               2, INT_V, 1, 9999},
    {OFFSET (OAMReadFlip),               1, INT_V, 1, 9999},
    {OFFSET (VTimerEnabled),             1, INT_V, 1, 9999},
    {OFFSET (HTimerEnabled),             1, INT_V, 1, 9999},
    {OFFSET (HTimerPosition),            2, INT_V, 1, 9999},
    {OFFSET (Mosaic),                    1, INT_V, 1, 9999},
    {OFFSET (Mode7HFlip),                1, INT_V, 1, 9999},
    {OFFSET (Mode7VFlip),                1, INT_V, 1, 9999},
    {OFFSET (Mode7Repeat),               1, INT_V, 1, 9999},
    {OFFSET (Window1Left),               1, INT_V, 1, 9999},
    {OFFSET (Window1Right),              1, INT_V, 1, 9999},
    {OFFSET (Window2Left),               1, INT_V, 1, 9999},
    {OFFSET (Window2Right),              1, INT_V, 1, 9999},
#define O(N) \
    {OFFSET (ClipWindowOverlapLogic[N]), 1, INT_V, 1, 9999}, \
    {OFFSET (ClipWindow1Enable[N]),      1, INT_V, 1, 9999}, \
    {OFFSET (ClipWindow2Enable[N]),      1, INT_V, 1, 9999}, \
    {OFFSET (ClipWindow1Inside[N]),      1, INT_V, 1, 9999}, \
    {OFFSET (ClipWindow2Inside[N]),      1, INT_V, 1, 9999}
	
    O(0), O(1), O(2), O(3), O(4), O(5),
	
#undef O
	
    {OFFSET (CGFLIPRead),                1, INT_V, 1, 9999},
    {OFFSET (Need16x8Mulitply),          1, INT_V, 1, 9999},
    {OFFSET (BGMosaic),                  4, uint8_ARRAY_V, 1, 9999},
    {OFFSET (OAMData),                   512 + 32, uint8_ARRAY_V, 1, 9999},
    {OFFSET (Need16x8Mulitply),          1, INT_V, 1, 9999},
    {DUMMY  (SPPU_MouseSpeed),           2, uint8_ARRAY_V, 1, 2},
    {OFFSET (OAMWriteRegister),          2, INT_V, 2, 9999},
    {OFFSET (BGnxOFSbyte),               1, INT_V, 2, 9999},
    {OFFSET (M7byte),                    1, INT_V, 2, 9999},
    {OFFSET (OpenBus1),                  1, INT_V, 2, 9999},
    {OFFSET (OpenBus2),                  1, INT_V, 2, 9999},
    {OFFSET (VTimerPosition),            2, INT_V, 2, 9999},
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SDMA *)

static FreezeData SnapDMA [] = {
#define O(N) \
    {OFFSET (TransferDirection) + N * sizeof (struct SDMA), 1, INT_V, 1, 9999}, \
    {OFFSET (AAddressFixed) + N * sizeof (struct SDMA),     1, INT_V, 1, 9999}, \
    {OFFSET (AAddressDecrement) + N * sizeof (struct SDMA), 1, INT_V, 1, 9999}, \
    {OFFSET (TransferMode) + N * sizeof (struct SDMA),      1, INT_V, 1, 9999}, \
    {OFFSET (ABank) + N * sizeof (struct SDMA),             1, INT_V, 1, 9999}, \
    {OFFSET (AAddress) + N * sizeof (struct SDMA),          2, INT_V, 1, 9999}, \
    {OFFSET (Address) + N * sizeof (struct SDMA),           2, INT_V, 1, 9999}, \
    {OFFSET (BAddress) + N * sizeof (struct SDMA),          1, INT_V, 1, 9999}, \
    {DELETED (TransferBytes),                               2, INT_V, 1, 2}, \
    {OFFSET (HDMAIndirectAddressing) + N * sizeof (struct SDMA), 1, INT_V, 1, 9999}, \
    {OFFSET (DMACount_Or_HDMAIndirectAddress) + N * sizeof (struct SDMA),     2, INT_V, 1, 9999}, \
    {OFFSET (IndirectBank) + N * sizeof (struct SDMA),      1, INT_V, 1, 9999}, \
    {OFFSET (Repeat) + N * sizeof (struct SDMA),            1, INT_V, 1, 9999}, \
    {OFFSET (LineCount) + N * sizeof (struct SDMA),         1, INT_V, 1, 9999}, \
    {OFFSET (DoTransfer) + N * sizeof (struct SDMA),        1, INT_V, 1, 9999}, \
    {OFFSET (UnknownByte) + N * sizeof (struct SDMA),       1, INT_V, 2, 9999}, \
    {OFFSET (UnusedBit43x0) + N * sizeof (struct SDMA),     1, INT_V, 2, 9999}
	
    O(0), O(1), O(2), O(3), O(4), O(5), O(6), O(7)
#undef O
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SAPU *)

static FreezeData SnapAPU [] = {
    {OFFSET (Cycles),            4, INT_V, 1, 9999},
    {OFFSET (ShowROM),           1, INT_V, 1, 9999},
    {DUMMY  (SAPU_Flags),        1, INT_V, 1, 2},
    {OFFSET (Flags),             4, INT_V, 2, 9999},
    {OFFSET (KeyedChannels),     1, INT_V, 1, 9999},
    {OFFSET (OutPorts),          4, uint8_ARRAY_V, 1, 9999},
    {OFFSET (DSP),               0x80, uint8_ARRAY_V, 1, 9999},
    {OFFSET (ExtraRAM),          64, uint8_ARRAY_V, 1, 9999},
    {OFFSET (Timer),             3, uint16_ARRAY_V, 1, 9999},
    {OFFSET (TimerTarget),       3, uint16_ARRAY_V, 1, 9999},
    {OFFSET (TimerEnabled),      3, uint8_ARRAY_V, 1, 9999},
    {OFFSET (TimerValueWritten), 3, uint8_ARRAY_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SAPURegisters *)

static FreezeData SnapAPURegisters [] = {
    {OFFSET (P),    1, INT_V, 1, 9999},
    {OFFSET (YA.W), 2, INT_V, 1, 9999},
    {OFFSET (X),    1, INT_V, 1, 9999},
    {OFFSET (S),    1, INT_V, 1, 9999},
    {OFFSET (PC),   2, INT_V, 1, 9999},
};

#undef OFFSET
#define OFFSET(f) Offset(f,SSoundData *)

static FreezeData SnapSoundData [] = {
    {OFFSET (master_volume_left),           2, INT_V, 1, 9999},
    {OFFSET (master_volume_right),          2, INT_V, 1, 9999},
    {OFFSET (echo_volume_left),             2, INT_V, 1, 9999},
    {OFFSET (echo_volume_right),            2, INT_V, 1, 9999},
    {OFFSET (echo_enable),                  4, INT_V, 1, 9999},
    {OFFSET (echo_feedback),                4, INT_V, 1, 9999},
    {OFFSET (echo_ptr),                     4, INT_V, 1, 9999},
    {OFFSET (echo_buffer_size),             4, INT_V, 1, 9999},
    {OFFSET (echo_write_enabled),           4, INT_V, 1, 9999},
    {OFFSET (echo_channel_enable),          4, INT_V, 1, 9999},
    {OFFSET (pitch_mod),                    4, INT_V, 1, 9999},
    {OFFSET (dummy),                        3, uint32_ARRAY_V, 1, 9999},
#define O(N) \
    {OFFSET (channels [N].state),           4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].type),            4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].volume_left),     2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].volume_right),    2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].hertz),           4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].count),           4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].loop),            1, INT_V, 1, 9999}, \
    {OFFSET (channels [N].envx),            4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].left_vol_level),  2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].right_vol_level), 2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].envx_target),     2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].env_error),       4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].erate),           4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].direction),       4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].attack_rate),     4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].decay_rate),      4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].sustain_rate),    4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].release_rate),    4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].sustain_level),   4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].sample),          2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].decoded),         16, uint16_ARRAY_V, 1, 9999}, \
    {OFFSET (channels [N].previous16),      2, uint16_ARRAY_V, 1, 9999}, \
    {OFFSET (channels [N].sample_number),   2, INT_V, 1, 9999}, \
    {OFFSET (channels [N].last_block),      1, INT_V, 1, 9999}, \
    {OFFSET (channels [N].needs_decode),    1, INT_V, 1, 9999}, \
    {OFFSET (channels [N].block_pointer),   4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].sample_pointer),  4, INT_V, 1, 9999}, \
    {OFFSET (channels [N].mode),            4, INT_V, 1, 9999}
	
    O(0), O(1), O(2), O(3), O(4), O(5), O(6), O(7),
#undef O
	{OFFSET (noise_rate),                   4, INT_V, 2, 9999},
#define O(N) \
	{OFFSET (channels [N].out_sample),      2, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xenvx),           4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xenvx_target),    4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xenv_count),      4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xenv_rate),       4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xattack_rate),    4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xdecay_rate),     4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xsustain_rate),   4, INT_V, 2, 9999}, \
	{OFFSET (channels [N].xsustain_level),  4, INT_V, 2, 9999}

	O(0), O(1), O(2), O(3), O(4), O(5), O(6), O(7)
#undef O
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SSA1Registers *)

static FreezeData SnapSA1Registers [] = {
    {OFFSET (PB),  1, INT_V, 1, 9999},
    {OFFSET (DB),  1, INT_V, 1, 9999},
    {OFFSET (P.W), 2, INT_V, 1, 9999},
    {OFFSET (A.W), 2, INT_V, 1, 9999},
    {OFFSET (D.W), 2, INT_V, 1, 9999},
    {OFFSET (S.W), 2, INT_V, 1, 9999},
    {OFFSET (X.W), 2, INT_V, 1, 9999},
    {OFFSET (Y.W), 2, INT_V, 1, 9999},
    {OFFSET (PCw), 2, INT_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SSA1 *)

static FreezeData SnapSA1 [] = {
    {OFFSET (Flags),               4, INT_V, 1, 9999},
    {OFFSET (NMIActive),           1, INT_V, 1, 9999},
    {OFFSET (IRQActive),           1, INT_V, 1, 9999},
    {OFFSET (WaitingForInterrupt), 1, INT_V, 1, 9999},
    {OFFSET (op1),                 2, INT_V, 1, 9999},
    {OFFSET (op2),                 2, INT_V, 1, 9999},
    {OFFSET (arithmetic_op),       4, INT_V, 1, 9999},
    {OFFSET (sum),                 8, INT_V, 1, 9999},
    {OFFSET (overflow),            1, INT_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SPC7110EmuVars *)

static FreezeData SnapSPC7110 [] = {
    {OFFSET (reg4800), 1, INT_V, 1, 9999},
    {OFFSET (reg4801), 1, INT_V, 1, 9999},
    {OFFSET (reg4802), 1, INT_V, 1, 9999},
    {OFFSET (reg4803), 1, INT_V, 1, 9999},
    {OFFSET (reg4804), 1, INT_V, 1, 9999},
    {OFFSET (reg4805), 1, INT_V, 1, 9999},
    {OFFSET (reg4806), 1, INT_V, 1, 9999},
    {OFFSET (reg4807), 1, INT_V, 1, 9999},
    {OFFSET (reg4808), 1, INT_V, 1, 9999},
    {OFFSET (reg4809), 1, INT_V, 1, 9999},
    {OFFSET (reg480A), 1, INT_V, 1, 9999},
    {OFFSET (reg480B), 1, INT_V, 1, 9999},
    {OFFSET (reg480C), 1, INT_V, 1, 9999},
    {OFFSET (reg4811), 1, INT_V, 1, 9999},
    {OFFSET (reg4812), 1, INT_V, 1, 9999},
    {OFFSET (reg4813), 1, INT_V, 1, 9999},
    {OFFSET (reg4814), 1, INT_V, 1, 9999},
    {OFFSET (reg4815), 1, INT_V, 1, 9999},
    {OFFSET (reg4816), 1, INT_V, 1, 9999},
    {OFFSET (reg4817), 1, INT_V, 1, 9999},
    {OFFSET (reg4818), 1, INT_V, 1, 9999},
    {OFFSET (reg4820), 1, INT_V, 1, 9999},
    {OFFSET (reg4821), 1, INT_V, 1, 9999},
    {OFFSET (reg4822), 1, INT_V, 1, 9999},
    {OFFSET (reg4823), 1, INT_V, 1, 9999},
    {OFFSET (reg4824), 1, INT_V, 1, 9999},
    {OFFSET (reg4825), 1, INT_V, 1, 9999},
    {OFFSET (reg4826), 1, INT_V, 1, 9999},
    {OFFSET (reg4827), 1, INT_V, 1, 9999},
    {OFFSET (reg4828), 1, INT_V, 1, 9999},
    {OFFSET (reg4829), 1, INT_V, 1, 9999},
    {OFFSET (reg482A), 1, INT_V, 1, 9999},
    {OFFSET (reg482B), 1, INT_V, 1, 9999},
    {OFFSET (reg482C), 1, INT_V, 1, 9999},
    {OFFSET (reg482D), 1, INT_V, 1, 9999},
    {OFFSET (reg482E), 1, INT_V, 1, 9999},
    {OFFSET (reg482F), 1, INT_V, 1, 9999},
    {OFFSET (reg4830), 1, INT_V, 1, 9999},
    {OFFSET (reg4831), 1, INT_V, 1, 9999},
    {OFFSET (reg4832), 1, INT_V, 1, 9999},
    {OFFSET (reg4833), 1, INT_V, 1, 9999},
    {OFFSET (reg4834), 1, INT_V, 1, 9999},
    {OFFSET (reg4840), 1, INT_V, 1, 9999},
    {OFFSET (reg4841), 1, INT_V, 1, 9999},
    {OFFSET (reg4842), 1, INT_V, 1, 9999},
    {OFFSET (AlignBy), 1, INT_V, 1, 9999},
    {OFFSET (written), 1, INT_V, 1, 9999},
    {OFFSET (offset_add),     1, INT_V, 1, 9999},
    {OFFSET (DataRomOffset),  4, INT_V, 1, 9999},
    {OFFSET (DataRomSize),    4, INT_V, 1, 9999},
    {OFFSET (bank50Internal), 4, INT_V, 1, 9999},
    {OFFSET (bank50),   0x10000, uint8_ARRAY_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SPC7110RTC *)

static FreezeData SnapS7RTC [] = {
    {OFFSET (reg),      16, uint8_ARRAY_V, 1, 9999},
    {OFFSET (index),     2, INT_V, 1, 9999},
    {OFFSET (control),   1, INT_V, 1, 9999},
    {OFFSET (init),      1, INT_V, 1, 9999},
    {OFFSET (last_used), 4, INT_V, 1, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SControlSnapshot *)

static FreezeData SnapControls [] = {
    {OFFSET (ver),               1, INT_V,         2, 9999},
    {OFFSET (port1_read_idx),    2, uint8_ARRAY_V, 2, 9999},
    {OFFSET (dummy1),            4, uint8_ARRAY_V, 2, 9999},
    {OFFSET (port2_read_idx),    2, uint8_ARRAY_V, 2, 9999},
    {OFFSET (dummy2),            4, uint8_ARRAY_V, 2, 9999},
    {OFFSET (mouse_speed),       2, uint8_ARRAY_V, 2, 9999},
    {OFFSET (justifier_select),  1, INT_V,         2, 9999},
    {OFFSET (dummy3),           10, uint8_ARRAY_V, 2, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct STimings *)

static FreezeData SnapTimings [] = {
    {OFFSET (H_Max_Master),   4, INT_V, 2, 9999},
	{OFFSET (H_Max),          4, INT_V, 2, 9999},
	{OFFSET (V_Max_Master),   4, INT_V, 2, 9999},
	{OFFSET (V_Max),          4, INT_V, 2, 9999},
	{OFFSET (HBlankStart),    4, INT_V, 2, 9999},
	{OFFSET (HBlankEnd),      4, INT_V, 2, 9999},
	{OFFSET (HDMAInit),       4, INT_V, 2, 9999},
	{OFFSET (HDMAStart),      4, INT_V, 2, 9999},
	{OFFSET (NMITriggerPos),  4, INT_V, 2, 9999},
	{OFFSET (WRAMRefreshPos), 4, INT_V, 2, 9999},
	{OFFSET (RenderPos),      4, INT_V, 2, 9999},
	{OFFSET (InterlaceField), 1, INT_V, 2, 9999}
};

#undef OFFSET
#define OFFSET(f) Offset(f,struct SBSX *)

static FreezeData SnapBSX [] = {
    {OFFSET (dirty),          1, INT_V,         2, 9999},
    {OFFSET (dirty2),         1, INT_V,         2, 9999},
    {OFFSET (bootup),         1, INT_V,         2, 9999},
    {OFFSET (flash_enable),   1, INT_V,         2, 9999},
    {OFFSET (write_enable),   1, INT_V,         2, 9999},
    {OFFSET (read_enable),    1, INT_V,         2, 9999},
    {OFFSET (flash_command),  4, INT_V,         2, 9999},
    {OFFSET (old_write),      4, INT_V,         2, 9999},
    {OFFSET (new_write),      4, INT_V,         2, 9999},
	{OFFSET (out_index),      1, INT_V,         2, 9999},
    {OFFSET (output),        32, uint8_ARRAY_V, 2, 9999},
	{OFFSET (PPU),           32, uint8_ARRAY_V, 2, 9999},
    {OFFSET (MMC),           16, uint8_ARRAY_V, 2, 9999},
    {OFFSET (prevMMC),       16, uint8_ARRAY_V, 2, 9999},
    {OFFSET (test2192),      32, uint8_ARRAY_V, 2, 9999}
};

static char ROMFilename [_MAX_PATH];
//static char SnapshotFilename [_MAX_PATH];

void FreezeStruct (STREAM stream, char *name, void *base, FreezeData *fields,
				   int num_fields);

void FreezeBlock (STREAM stream, char *name, uint8 *block, int size);
#ifdef NGC
extern void NGCFreezeBlock (char *name, uint8 *block, int size);
extern int NGCUnFreezeBlock( char *name, uint8 *block, int size );
extern int GetMem( char *buffer, int len );
#endif

int UnfreezeStruct (STREAM stream, char *name, void *base, FreezeData *fields,
					int num_fields, int version);
int UnfreezeBlock (STREAM stream, char *name, uint8 *block, int size);

int UnfreezeStructCopy (STREAM stream, char *name, uint8** block, FreezeData *fields, int num_fields, int version);

void UnfreezeStructFromCopy (void *base, FreezeData *fields, int num_fields, uint8* block, int version);

int UnfreezeBlockCopy (STREAM stream, char *name, uint8** block, int size);

void S9xCloseSnapshotFile (FILE *stream)
{
	fclose(stream);
}

bool8 Snapshot (const char *filename)
{
    return (S9xFreezeGame (filename));
}

bool8 S9xFreezeGame (const char *filename)
{
    STREAM stream = NULL;

#ifndef NGC	
    if (S9xOpenSnapshotFile (filename, FALSE, &stream))
#endif
    {
		S9xPrepareSoundForSnapshotSave (FALSE);
		
		S9xFreezeToStream (stream);
		S9xCloseSnapshotFile (stream);

		S9xPrepareSoundForSnapshotSave (TRUE);
		
		S9xResetSaveTimer (TRUE);

#ifndef NGC	    
		if(S9xMovieActive())
		{
			sprintf(String, "Movie snapshot %s", S9xBasename (filename));
			S9xMessage (S9X_INFO, S9X_FREEZE_FILE_INFO, String);
		}
		else			
		{
			sprintf(String, "Saved %s", S9xBasename (filename));
			S9xMessage (S9X_INFO, S9X_FREEZE_FILE_INFO, String);
		}
#endif
		return (TRUE);
    }
    return (FALSE);
}

bool8 S9xLoadSnapshot (const char *filename)
{
    return (S9xUnfreezeGame (filename));
}

bool8 S9xUnfreezeGame (const char *filename)
{
    char def [PATH_MAX];
    char drive [_MAX_DRIVE];
    char dir [_MAX_DIR];
    char ext [_MAX_EXT];

    _splitpath (filename, drive, dir, def, ext);
    S9xResetSaveTimer (!strcmp(ext, "oops") || !strcmp(ext, "oop"));
    
    ZeroMemory (&Obsolete, sizeof(Obsolete));

#ifndef NGC
	/*** As the GC never had snapshots - there won't be
	     any original ones -;) ***/
    if (S9xLoadOrigSnapshot (filename))
		return (TRUE);

	
    if (S9xUnfreezeZSNES (filename))
		return (TRUE);

#endif
    
    STREAM snapshot = NULL;
    
#ifndef NGC
    if (S9xOpenSnapshotFile (filename, TRUE, &snapshot))
#endif
    {
		int result;
		if ((result = S9xUnfreezeFromStream (snapshot)) != SUCCESS)
		{
			switch (result)
			{
			case WRONG_FORMAT:
				S9xMessage (S9X_ERROR, S9X_WRONG_FORMAT, 
					"File not in Snes9x freeze format");
				WaitPrompt("File not in Snes9x freeze format");
				break;
			case WRONG_VERSION:
				S9xMessage (S9X_ERROR, S9X_WRONG_VERSION,
					"Incompatable Snes9x freeze file format version");
				WaitPrompt("Incompatable Snes9x freeze file format version");
				break;
			case WRONG_MOVIE_SNAPSHOT:
				S9xMessage (S9X_ERROR, S9X_WRONG_MOVIE_SNAPSHOT, MOVIE_ERR_SNAPSHOT_WRONG_MOVIE);
				break;
			case NOT_A_MOVIE_SNAPSHOT:
				S9xMessage (S9X_ERROR, S9X_NOT_A_MOVIE_SNAPSHOT, MOVIE_ERR_SNAPSHOT_NOT_MOVIE);
				break;
			default:
			case FILE_NOT_FOUND:
				sprintf (String, "ROM image \"%s\" for freeze file not found",
					ROMFilename);
				S9xMessage (S9X_ERROR, S9X_ROM_NOT_FOUND, String);
				WaitPrompt(String);
				break;
			}
			S9xCloseSnapshotFile (snapshot);
			return (FALSE);
		}

#ifndef NGC
		if(!S9xMovieActive())
		{
			sprintf(String, "Loaded %s", S9xBasename (filename));
			S9xMessage (S9X_INFO, S9X_FREEZE_FILE_INFO, String);
		}

		S9xCloseSnapshotFile (snapshot);
		
#endif
		return (TRUE);
    }
    return (FALSE);
}

void S9xFreezeToStream (STREAM stream)
{
    char buffer [1024];
    int i;

    S9xSetSoundMute (TRUE);
#ifdef ZSNES_FX
    if (Settings.SuperFX)
        S9xSuperFXPreSaveState ();
#endif

    S9xUpdateRTC();
    S9xSRTCPreSaveState ();

    for (i = 0; i < 8; i++)
    {
        SoundData.channels [i].previous16 [0] = (int16) SoundData.channels [i].previous [0];
        SoundData.channels [i].previous16 [1] = (int16) SoundData.channels [i].previous [1];
    }
    sprintf (buffer, "%s:%04d\n", SNAPSHOT_MAGIC, SNAPSHOT_VERSION);
    WRITE_STREAM (buffer, strlen (buffer), stream);
    sprintf (buffer, "NAM:%06d:%s%c", (int)strlen (Memory.ROMFilename) + 1,
             Memory.ROMFilename, 0);
    WRITE_STREAM (buffer, strlen (buffer) + 1, stream);
    FreezeStruct (stream, "CPU", &CPU, SnapCPU, COUNT (SnapCPU));
    FreezeStruct (stream, "REG", &Registers, SnapRegisters, COUNT (SnapRegisters));
    FreezeStruct (stream, "PPU", &PPU, SnapPPU, COUNT (SnapPPU));
    FreezeStruct (stream, "DMA", DMA, SnapDMA, COUNT (SnapDMA));

    // RAM and VRAM
    FreezeBlock (stream, "VRA", Memory.VRAM, 0x10000);
    FreezeBlock (stream, "RAM", Memory.RAM, 0x20000);
    FreezeBlock (stream, "SRA", ::SRAM, 0x20000);
    FreezeBlock (stream, "FIL", Memory.FillRAM, 0x8000);
    if (Settings.APUEnabled)
    {
        // APU
        FreezeStruct (stream, "APU", &APU, SnapAPU, COUNT (SnapAPU));
        FreezeStruct (stream, "ARE", &APURegisters, SnapAPURegisters,
                      COUNT (SnapAPURegisters));
        FreezeBlock (stream, "ARA", IAPU.RAM, 0x10000);
        FreezeStruct (stream, "SOU", &SoundData, SnapSoundData,
                      COUNT (SnapSoundData));
    }

    // Controls
    struct SControlSnapshot ctl_snap;
    S9xControlPreSave(&ctl_snap);
    FreezeStruct (stream, "CTL", &ctl_snap, SnapControls, COUNT (SnapControls));
	
	// Timings
	FreezeStruct (stream, "TIM", &Timings, SnapTimings, COUNT (SnapTimings));

    // Special chips
    if (Settings.SA1)
    {
        S9xSA1PackStatus ();
        FreezeStruct (stream, "SA1", &SA1, SnapSA1, COUNT (SnapSA1));
        FreezeStruct (stream, "SAR", &SA1Registers, SnapSA1Registers, 
                      COUNT (SnapSA1Registers));
    }

    if (Settings.SPC7110)
    {
        FreezeStruct (stream, "SP7", &s7r, SnapSPC7110, COUNT (SnapSPC7110));
    }

    if (Settings.SPC7110RTC)
    {
        FreezeStruct (stream, "RTC", &rtc_f9, SnapS7RTC, COUNT (SnapS7RTC));
    }

	// BS
	if (Settings.BS)
	{
        FreezeStruct (stream, "BSX", &BSX, SnapBSX, COUNT (SnapBSX));
	}

#ifndef NGC
    if (S9xMovieActive ())
    {
        uint8* movie_freeze_buf;
        uint32 movie_freeze_size;

        S9xMovieFreeze(&movie_freeze_buf, &movie_freeze_size);
        if(movie_freeze_buf)
        {
            struct SnapshotMovieInfo mi;
            mi.MovieInputDataSize = movie_freeze_size;
            FreezeStruct (stream, "MOV", &mi, SnapMovie, COUNT (SnapMovie));
            FreezeBlock (stream, "MID", movie_freeze_buf, movie_freeze_size);
            delete [] movie_freeze_buf;
        }
    }
#endif
    
    S9xSetSoundMute (FALSE);
#ifdef ZSNES_FX
    if (Settings.SuperFX)
        S9xSuperFXPostSaveState ();
#endif
}

int S9xUnfreezeFromStream (STREAM stream)
{
    char buffer [_MAX_PATH + 1];
    char rom_filename [_MAX_PATH + 1];
    int result;
	
    int version;
    int len = strlen (SNAPSHOT_MAGIC) + 1 + 4 + 1;

#ifdef NGC	
    GetMem(buffer, len);
#else
    if (READ_STREAM (buffer, len, stream) != len)
		return (WRONG_FORMAT);
#endif    
    if (strncmp (buffer, SNAPSHOT_MAGIC, strlen (SNAPSHOT_MAGIC)) != 0)
		return (WRONG_FORMAT);
    if ((version = atoi (&buffer [strlen (SNAPSHOT_MAGIC) + 1])) > SNAPSHOT_VERSION)
		return (WRONG_VERSION);
	
    if ((result = UnfreezeBlock (stream, "NAM", (uint8 *) rom_filename, _MAX_PATH)) != SUCCESS)
		return (result);
	
#ifndef NGC    
    if (strcasecmp (rom_filename, Memory.ROMFilename) != 0 &&
		strcasecmp (S9xBasename (rom_filename), S9xBasename (Memory.ROMFilename)) != 0)
    {
		S9xMessage (S9X_WARNING, S9X_FREEZE_ROM_NAME,
			"Current loaded ROM image doesn't match that required by freeze-game file.");
    }
#endif
    
// ## begin load ##
	uint8* local_cpu = NULL;
	uint8* local_registers = NULL;
	uint8* local_ppu = NULL;
	uint8* local_dma = NULL;
	uint8* local_vram = NULL;
	uint8* local_ram = NULL;
	uint8* local_sram = NULL;
	uint8* local_fillram = NULL;
	uint8* local_apu = NULL;
	uint8* local_apu_registers = NULL;
	uint8* local_apu_ram = NULL;
	uint8* local_apu_sounddata = NULL;
	uint8* local_sa1 = NULL;
	uint8* local_sa1_registers = NULL;
	uint8* local_spc = NULL;
	uint8* local_spc_rtc = NULL;
	uint8* local_movie_data = NULL;
	uint8* local_control_data = NULL;
	uint8* local_timing_data = NULL;
	uint8* local_bsx_data = NULL;
	
	do
	{
		if ((result = UnfreezeStructCopy (stream, "CPU", &local_cpu, SnapCPU, COUNT (SnapCPU), version)) != SUCCESS)
			break;
		if ((result = UnfreezeStructCopy (stream, "REG", &local_registers, SnapRegisters, COUNT (SnapRegisters), version)) != SUCCESS)
			break;
		if ((result = UnfreezeStructCopy (stream, "PPU", &local_ppu, SnapPPU, COUNT (SnapPPU), version)) != SUCCESS)
			break;
		if ((result = UnfreezeStructCopy (stream, "DMA", &local_dma, SnapDMA, COUNT (SnapDMA), version)) != SUCCESS)
			break;
		if ((result = UnfreezeBlockCopy (stream, "VRA", &local_vram, 0x10000)) != SUCCESS)
			break;
		if ((result = UnfreezeBlockCopy (stream, "RAM", &local_ram, 0x20000)) != SUCCESS)
			break;
		if ((result = UnfreezeBlockCopy (stream, "SRA", &local_sram, 0x20000)) != SUCCESS)
			break;
		if ((result = UnfreezeBlockCopy (stream, "FIL", &local_fillram, 0x8000)) != SUCCESS)
			break;
		if (UnfreezeStructCopy (stream, "APU", &local_apu, SnapAPU, COUNT (SnapAPU), version) == SUCCESS)
		{
			if ((result = UnfreezeStructCopy (stream, "ARE", &local_apu_registers, SnapAPURegisters, COUNT (SnapAPURegisters), version)) != SUCCESS)
				break;
			if ((result = UnfreezeBlockCopy (stream, "ARA", &local_apu_ram, 0x10000)) != SUCCESS)
				break;
			if ((result = UnfreezeStructCopy (stream, "SOU", &local_apu_sounddata, SnapSoundData, COUNT (SnapSoundData), version)) != SUCCESS)
				break;
		}
		if ((result = UnfreezeStructCopy (stream, "CTL", &local_control_data, SnapControls, COUNT (SnapControls), version)) != SUCCESS && version>1)
				break;

		if ((result = UnfreezeStructCopy (stream, "TIM", &local_timing_data, SnapTimings, COUNT (SnapTimings), version)) != SUCCESS && version>1)
				break;

		if ((result = UnfreezeStructCopy (stream, "SA1", &local_sa1, SnapSA1, COUNT(SnapSA1), version)) == SUCCESS)
		{
			if ((result = UnfreezeStructCopy (stream, "SAR", &local_sa1_registers, SnapSA1Registers, COUNT (SnapSA1Registers), version)) != SUCCESS)
				break;
		}
		
		if ((result = UnfreezeStructCopy (stream, "SP7", &local_spc, SnapSPC7110, COUNT(SnapSPC7110), version)) != SUCCESS)
		{
			if(Settings.SPC7110)
				break;
		}
		if ((result = UnfreezeStructCopy (stream, "RTC", &local_spc_rtc, SnapS7RTC, COUNT (SnapS7RTC), version)) != SUCCESS)
		{
			if(Settings.SPC7110RTC)
				break;
		}

		if ((result = UnfreezeStructCopy (stream, "BSX", &local_bsx_data, SnapBSX, COUNT (SnapBSX), version)) != SUCCESS && version > 1)
		{
			if (Settings.BS)
				break;
		}

#ifndef NGC
		if (S9xMovieActive ())
		{
			SnapshotMovieInfo mi;
			if ((result = UnfreezeStruct (stream, "MOV", &mi, SnapMovie, COUNT(SnapMovie), version)) != SUCCESS)
			{
				result = NOT_A_MOVIE_SNAPSHOT;
				break;
			}

			if ((result = UnfreezeBlockCopy (stream, "MID", &local_movie_data, mi.MovieInputDataSize)) != SUCCESS)
			{
				result = NOT_A_MOVIE_SNAPSHOT;
				break;
			}

			if (!S9xMovieUnfreeze(local_movie_data, mi.MovieInputDataSize))
			{
				result = WRONG_MOVIE_SNAPSHOT;
				break;
			}
		}
#endif
		result=SUCCESS;

	} while(false);
// ## end load ##
	
	if (result == SUCCESS)
	{
		uint32 old_flags = CPU.Flags;
		uint32 sa1_old_flags = SA1.Flags;
		S9xReset ();
		S9xSetSoundMute (TRUE);

		UnfreezeStructFromCopy (&CPU, SnapCPU, COUNT (SnapCPU), local_cpu, version);
		UnfreezeStructFromCopy (&Registers, SnapRegisters, COUNT (SnapRegisters), local_registers, version);
		UnfreezeStructFromCopy (&PPU, SnapPPU, COUNT (SnapPPU), local_ppu, version);
		UnfreezeStructFromCopy (DMA, SnapDMA, COUNT (SnapDMA), local_dma, version);
		memcpy (Memory.VRAM, local_vram, 0x10000);
		memcpy (Memory.RAM, local_ram, 0x20000);
		memcpy (::SRAM, local_sram, 0x20000);
		memcpy (Memory.FillRAM, local_fillram, 0x8000);
		if(local_apu)
		{
			UnfreezeStructFromCopy (&APU, SnapAPU, COUNT (SnapAPU), local_apu, version);
			UnfreezeStructFromCopy (&APURegisters, SnapAPURegisters, COUNT (SnapAPURegisters), local_apu_registers, version);
			memcpy (IAPU.RAM, local_apu_ram, 0x10000);
			UnfreezeStructFromCopy (&SoundData, SnapSoundData, COUNT (SnapSoundData), local_apu_sounddata, version);
		}
		if(local_sa1)
		{
			UnfreezeStructFromCopy (&SA1, SnapSA1, COUNT (SnapSA1), local_sa1, version);
			UnfreezeStructFromCopy (&SA1Registers, SnapSA1Registers, COUNT (SnapSA1Registers), local_sa1_registers, version);
		}
		if(local_spc)
		{
			UnfreezeStructFromCopy (&s7r, SnapSPC7110, COUNT (SnapSPC7110), local_spc, version);
		}
		if(local_spc_rtc)
		{
			UnfreezeStructFromCopy (&rtc_f9, SnapS7RTC, COUNT (SnapS7RTC), local_spc_rtc, version);
		}
		
		struct SControlSnapshot ctl_snap;
		if(local_control_data) {
			UnfreezeStructFromCopy (&ctl_snap, SnapControls, COUNT (SnapControls), local_control_data, version);
		} else {
			// Must be an old snes9x savestate
			ZeroMemory(&ctl_snap, sizeof(ctl_snap));
			ctl_snap.ver=0;
			ctl_snap.port1_read_idx[0]=Obsolete.SPPU_Joypad1ButtonReadPos;
			ctl_snap.port2_read_idx[0]=Obsolete.SPPU_Joypad2ButtonReadPos;
			ctl_snap.port2_read_idx[1]=Obsolete.SPPU_Joypad3ButtonReadPos;
			// Old snes9x used MouseSpeed[0] for both mice. Weird.
			ctl_snap.mouse_speed[0]=ctl_snap.mouse_speed[1]=Obsolete.SPPU_MouseSpeed[0];
			ctl_snap.justifier_select=0;
		}
		S9xControlPostLoad(&ctl_snap);
		
		if (local_timing_data)
			UnfreezeStructFromCopy (&Timings, SnapTimings, COUNT (SnapTimings), local_timing_data, version);
		else	// Must be an old snes9x savestate
		{
			S9xUpdateHVTimerPosition();
		}

		if (local_bsx_data)
			UnfreezeStructFromCopy (&BSX, SnapBSX, COUNT (SnapBSX), local_bsx_data, version);

		Memory.FixROMSpeed ();
		CPU.Flags |= old_flags & (DEBUG_MODE_FLAG | TRACE_FLAG |
			SINGLE_STEP_FLAG | FRAME_ADVANCE_FLAG);

	    IPPU.ColorsChanged = TRUE;
		IPPU.OBJChanged = TRUE;
		CPU.InDMA = CPU.InWRAM_DMA = FALSE;
		S9xFixColourBrightness ();
		IPPU.RenderThisFrame = FALSE;

		if (local_apu)
		{
			S9xSetSoundMute (FALSE);
			IAPU.PC = IAPU.RAM + APURegisters.PC;
			S9xAPUUnpackStatus ();
			if (APUCheckDirectPage ())
				IAPU.DirectPage = IAPU.RAM + 0x100;
			else
				IAPU.DirectPage = IAPU.RAM;
			Settings.APUEnabled = TRUE;
			IAPU.APUExecuting = TRUE;
		}
		else
		{
			Settings.APUEnabled = FALSE;
			IAPU.APUExecuting = FALSE;
			S9xSetSoundMute (TRUE);
		}

		if (local_sa1)
		{
			S9xFixSA1AfterSnapshotLoad ();
			SA1.Flags |= sa1_old_flags & (TRACE_FLAG);
		}

		if (local_spc_rtc)
		{
			S9xUpdateRTC();
		}
		
		if (local_bsx_data)
			S9xFixBSXAfterSnapshotLoad();

		S9xFixSoundAfterSnapshotLoad (version);

		uint8 hdma_byte = Memory.FillRAM[0x420c];
		S9xSetCPU(hdma_byte, 0x420c);

                if(version<2){
                    for(int d=0; d<8; d++){
                        DMA[d].UnknownByte = Memory.FillRAM[0x430b+(d<<4)];
                        DMA[d].UnusedBit43x0 = (Memory.FillRAM[0x4300+(d<<4)]&0x20)?1:0;
                    }
                    PPU.M7HOFS = PPU.BG[0].HOffset;
                    PPU.M7VOFS = PPU.BG[0].VOffset;
                    if(!Memory.FillRAM[0x4213]){
                        // most likely an old savestate
                        Memory.FillRAM[0x4213]=Memory.FillRAM[0x4201];
                        if(!Memory.FillRAM[0x4213])
                            Memory.FillRAM[0x4213]=Memory.FillRAM[0x4201]=0xFF;
                    }
                    if(local_apu) APU.Flags = Obsolete.SAPU_Flags;
					
					// FIXME: assuming the old savesate was made outside S9xMainLoop().
					// In this case, V=0 and HDMA was already initialized.
					CPU.WhichEvent = HC_HDMA_INIT_EVENT;
					CPU.NextEvent = Timings.HDMAInit;
					S9xReschedule();
                }

		ICPU.ShiftedPB = Registers.PB << 16;
		ICPU.ShiftedDB = Registers.DB << 16;
		S9xSetPCBase (Registers.PBPC);
		S9xUnpackStatus ();
		S9xFixCycles ();
//		S9xReschedule ();				// <-- this causes desync when recording or playing movies

#ifdef ZSNES_FX
		if (Settings.SuperFX)
			S9xSuperFXPostLoadState ();
#endif
		
		S9xSRTCPostLoadState ();
		if (Settings.SDD1)
			S9xSDD1PostLoadState ();
			
		IAPU.NextAPUTimerPos = CPU.Cycles << SNES_APUTIMER_ACCURACY;
		IAPU.APUTimerCounter = 0; 
	}

	if (local_cpu)           delete [] local_cpu;
	if (local_registers)     delete [] local_registers;
	if (local_ppu)           delete [] local_ppu;
	if (local_dma)           delete [] local_dma;
	if (local_vram)          delete [] local_vram;
	if (local_ram)           delete [] local_ram;
	if (local_sram)          delete [] local_sram;
	if (local_fillram)       delete [] local_fillram;
	if (local_apu)           delete [] local_apu;
	if (local_apu_registers) delete [] local_apu_registers;
	if (local_apu_ram)       delete [] local_apu_ram;
	if (local_apu_sounddata) delete [] local_apu_sounddata;
	if (local_sa1)           delete [] local_sa1;
	if (local_sa1_registers) delete [] local_sa1_registers;
	if (local_spc)           delete [] local_spc;
	if (local_spc_rtc)       delete [] local_spc_rtc;
	if (local_movie_data)    delete [] local_movie_data;
	if (local_control_data)  delete [] local_control_data;
	if (local_timing_data)   delete [] local_timing_data;
	if (local_bsx_data)      delete [] local_bsx_data;

	return (result);
}


/*****************************************************************/

int FreezeSize (int size, int type)
{
    switch (type)
    {
      case uint16_ARRAY_V:
        return (size * 2);
      case uint32_ARRAY_V:
        return (size * 4);
      default:
        return (size);
    }
}

void FreezeStruct (STREAM stream, char *name, void *base, FreezeData *fields,
				   int num_fields)
{
    // Work out the size of the required block
    int len = 0;
    int i;
    int j;

    for (i = 0; i < num_fields; i++)
    {
        if (SNAPSHOT_VERSION<fields[i].deleted_in)
            len += FreezeSize (fields [i].size, fields [i].type);
    }
    //fprintf(stderr, "%s: freeze size is %d\n", name, len);

    uint8 *block = new uint8 [len];
    uint8 *ptr = block;
    uint16 word;
    uint32 dword;
    int64  qword;

    // Build the block ready to be streamed out
    for (i = 0; i < num_fields; i++)
    {
        if (SNAPSHOT_VERSION>=fields[i].deleted_in) continue;
        switch (fields [i].type)
        {
          case INT_V:
            switch (fields [i].size)
            {
              case 1:
                *ptr++ = *((uint8 *) base + fields [i].offset);
                break;
              case 2:
                word = *((uint16 *) ((uint8 *) base + fields [i].offset));
                *ptr++ = (uint8) (word >> 8);
                *ptr++ = (uint8) word;
                break;
              case 4:
                dword = *((uint32 *) ((uint8 *) base + fields [i].offset));
                *ptr++ = (uint8) (dword >> 24);
                *ptr++ = (uint8) (dword >> 16);
                *ptr++ = (uint8) (dword >> 8);
                *ptr++ = (uint8) dword;
                break;
              case 8:
                qword = *((int64 *) ((uint8 *) base + fields [i].offset));
                *ptr++ = (uint8) (qword >> 56);
                *ptr++ = (uint8) (qword >> 48);
                *ptr++ = (uint8) (qword >> 40);
                *ptr++ = (uint8) (qword >> 32);
                *ptr++ = (uint8) (qword >> 24);
                *ptr++ = (uint8) (qword >> 16);
                *ptr++ = (uint8) (qword >> 8);
                *ptr++ = (uint8) qword;
                break;
            }
            break;
          case uint8_ARRAY_V:
            memmove (ptr, (uint8 *) base + fields [i].offset, fields [i].size);
            ptr += fields [i].size;
            break;
          case uint16_ARRAY_V:
            for (j = 0; j < fields [i].size; j++)
            {
                word = *((uint16 *) ((uint8 *) base + fields [i].offset + j * 2));
                *ptr++ = (uint8) (word >> 8);
                *ptr++ = (uint8) word;
            }
            break;
          case uint32_ARRAY_V:
            for (j = 0; j < fields [i].size; j++)
            {
                dword = *((uint32 *) ((uint8 *) base + fields [i].offset + j * 4));
                *ptr++ = (uint8) (dword >> 24);
                *ptr++ = (uint8) (dword >> 16);
                *ptr++ = (uint8) (dword >> 8);
                *ptr++ = (uint8) dword;
            }
            break;
        }
    }
    //fprintf(stderr, "%s: Wrote %d bytes\n", name, ptr-block);

#ifndef NGC
    FreezeBlock (stream, name, block, len);
#else
    NGCFreezeBlock(name, block, len);
#endif
    
    delete[] block;
}

void FreezeBlock (STREAM stream, char *name, uint8 *block, int size)
{
    char buffer [512];
    sprintf (buffer, "%s:%06d:", name, size);
    WRITE_STREAM (buffer, strlen (buffer), stream);
    WRITE_STREAM (block, size, stream);
    
}

#ifdef NGC
void NGCFreezeStruct()
{
	STREAM s = NULL;
	
	FreezeStruct (s,"CPU", &CPU, SnapCPU, COUNT (SnapCPU));
	FreezeStruct (s,"REG", &Registers, SnapRegisters, COUNT (SnapRegisters));
	FreezeStruct (s,"PPU", &PPU, SnapPPU, COUNT (SnapPPU));
	FreezeStruct (s,"DMA", DMA, SnapDMA, COUNT (SnapDMA));
	
	// RAM and VRAM
	NGCFreezeBlock ("VRA", Memory.VRAM, 0x10000);
	NGCFreezeBlock ("RAM", Memory.RAM, 0x20000);
	NGCFreezeBlock ("SRA", ::SRAM, 0x20000);
	NGCFreezeBlock ("FIL", Memory.FillRAM, 0x8000);
	
    if (Settings.APUEnabled)
    {
        // APU
        FreezeStruct (s,"APU", &APU, SnapAPU, COUNT (SnapAPU));
        FreezeStruct (s,"ARE", &APURegisters, SnapAPURegisters,
                      COUNT (SnapAPURegisters));
        NGCFreezeBlock ("ARA", IAPU.RAM, 0x10000);
        FreezeStruct (s,"SOU", &SoundData, SnapSoundData,
                      COUNT (SnapSoundData));
    }

    // Controls
    struct SControlSnapshot ctl_snap;
    S9xControlPreSave(&ctl_snap);
    FreezeStruct (s,"CTL", &ctl_snap, SnapControls, COUNT (SnapControls));
	
	// Timings
	FreezeStruct (s,"TIM", &Timings, SnapTimings, COUNT (SnapTimings));

    // Special chips
    if (Settings.SA1)
    {
        S9xSA1PackStatus ();
        FreezeStruct (s,"SA1", &SA1, SnapSA1, COUNT (SnapSA1));
        FreezeStruct (s,"SAR", &SA1Registers, SnapSA1Registers, 
                      COUNT (SnapSA1Registers));
    }

    if (Settings.SPC7110)
    {
        FreezeStruct (s,"SP7", &s7r, SnapSPC7110, COUNT (SnapSPC7110));
    }

    if (Settings.SPC7110RTC)
    {
        FreezeStruct (s,"RTC", &rtc_f9, SnapS7RTC, COUNT (SnapS7RTC));
    }

	// BS
	if (Settings.BS)
	{
        FreezeStruct (s,"BSX", &BSX, SnapBSX, COUNT (SnapBSX));
	}	
}

#endif

/*****************************************************************/

int UnfreezeBlock (STREAM stream, char *name, uint8 *block, int size)
{
#ifndef NGC
    char buffer [20], *e;
    int len = 0;
    int rem = 0;
    long rewind = FIND_STREAM(stream);

    if (READ_STREAM (buffer, 11, stream) != 11 ||
        strncmp (buffer, name, 3) != 0 || buffer [3] != ':' ||
        buffer[10] != ':' ||
        (len = strtol (&buffer [4], &e, 10)) == 0 || e != buffer+10)
    {
        REVERT_STREAM(stream, rewind, 0);
        return (WRONG_FORMAT);
    }

    if (len > size)
    {
        rem = len - size;
        len = size;
    }
    ZeroMemory (block, size);
    if (READ_STREAM (block, len, stream) != len)
    {
        REVERT_STREAM(stream, rewind, 0);
        return (WRONG_FORMAT);
    }
    if (rem)
    {
        char *junk = new char [rem];
        len = READ_STREAM (junk, rem, stream);
        delete [] junk;
        if (len != rem)
        {
            REVERT_STREAM(stream, rewind, 0);
            return (WRONG_FORMAT);
        }
    }

    return (SUCCESS);
#else
    return NGCUnFreezeBlock(name, block, size);
#endif
    
}

int UnfreezeBlockCopy (STREAM stream, char *name, uint8** block, int size)
{
    *block = new uint8 [size];
    int result;

    if ((result = UnfreezeBlock (stream, name, *block, size)) != SUCCESS)
    {
        delete [] (*block);
        *block = NULL;
        return (result);
    }

    return (result);
}

int UnfreezeStruct (STREAM stream, char *name, void *base, FreezeData *fields,
					int num_fields, int version)
{
    uint8 *block = NULL;
    int result;

    result = UnfreezeStructCopy (stream, name, &block, fields, num_fields, version);
    if (result != SUCCESS)
    {
        if (block!=NULL) delete [] block;
        return result;
    }
    UnfreezeStructFromCopy (base, fields, num_fields, block, version);
    delete [] block;
    return SUCCESS;
}

int UnfreezeStructCopy (STREAM stream, char *name, uint8** block, FreezeData *fields, int num_fields, int version)
{
    // Work out the size of the required block
    int len = 0;
    int i;

    for (i = 0; i < num_fields; i++)
    {
        if (version>=fields [i].debuted_in && version<fields[i].deleted_in)
            len += FreezeSize (fields [i].size, fields [i].type);
    }
    //fprintf(stderr, "%s[%p]: unfreeze size is %d\n", name, fields, len);

    return (UnfreezeBlockCopy (stream, name, block, len));
}

void UnfreezeStructFromCopy (void *sbase, FreezeData *fields, int num_fields, uint8* block, int version)
{
    int i;
    int j;
    uint8 *ptr = block;
    uint16 word;
    uint32 dword;
    int64  qword;
    void *base;

    // Unpack the block of data into a C structure
    for (i = 0; i < num_fields; i++)
    {
        if (version<fields [i].debuted_in || version>=fields[i].deleted_in) continue;
        base = (SNAPSHOT_VERSION>=fields[i].deleted_in)?((void *)&Obsolete):sbase;
        switch (fields [i].type)
        {
          case INT_V:
            switch (fields [i].size)
            {
              case 1:
                if(fields[i].offset<0){ ptr++; break; }
                *((uint8 *) base + fields [i].offset) = *ptr++;
                break;
              case 2:
                if(fields[i].offset<0){ ptr+=2; break; }
                word  = *ptr++ << 8;
                word |= *ptr++;
                *((uint16 *) ((uint8 *) base + fields [i].offset)) = word;
                break;
              case 4:
                if(fields[i].offset<0){ ptr+=4; break; }
                dword  = *ptr++ << 24;
                dword |= *ptr++ << 16;
                dword |= *ptr++ << 8;
                dword |= *ptr++;
                *((uint32 *) ((uint8 *) base + fields [i].offset)) = dword;
                break;
              case 8:
                if(fields[i].offset<0){ ptr+=8; break; }
                qword  = (int64) *ptr++ << 56;
                qword |= (int64) *ptr++ << 48;
                qword |= (int64) *ptr++ << 40;
                qword |= (int64) *ptr++ << 32;
                qword |= (int64) *ptr++ << 24;
                qword |= (int64) *ptr++ << 16;
                qword |= (int64) *ptr++ << 8;
                qword |= (int64) *ptr++;
                *((int64 *) ((uint8 *) base + fields [i].offset)) = qword;
                break;
            }
            break;
          case uint8_ARRAY_V:
            if(fields[i].offset>=0)
                memmove ((uint8 *) base + fields [i].offset, ptr, fields [i].size);
            ptr += fields [i].size;
            break;
          case uint16_ARRAY_V:
            if(fields[i].offset<0){ ptr+=fields[i].size*2; break; }
            for (j = 0; j < fields [i].size; j++)
            {
                word  = *ptr++ << 8;
                word |= *ptr++;
                *((uint16 *) ((uint8 *) base + fields [i].offset + j * 2)) = word;
            }
            break;
          case uint32_ARRAY_V:
            if(fields[i].offset<0){ ptr+=fields[i].size*4; break; }
            for (j = 0; j < fields [i].size; j++)
            {
                dword  = *ptr++ << 24;
                dword |= *ptr++ << 16;
                dword |= *ptr++ << 8;
                dword |= *ptr++;
                *((uint32 *) ((uint8 *) base + fields [i].offset + j * 4)) = dword;
            }
            break;
        }
    }
    //fprintf(stderr, "%p: Unfroze %d bytes\n", fields, ptr-block);
}


/*****************************************************************/

extern uint8 spc_dump_dsp[0x100];

bool8 S9xSPCDump (const char *filename)
{
    static uint8 header [] = {
		'S', 'N', 'E', 'S', '-', 'S', 'P', 'C', '7', '0', '0', ' ',
			'S', 'o', 'u', 'n', 'd', ' ', 'F', 'i', 'l', 'e', ' ',
			'D', 'a', 't', 'a', ' ', 'v', '0', '.', '3', '0', 26, 26, 26
    };
    static uint8 version = {
		0x1e
    };
	
    FILE *fs;
	
    S9xSetSoundMute (TRUE);
	
    if (!(fs = fopen (filename, "wb")))
		return (FALSE);
	
    // The SPC file format:
    // 0000: header:	'SNES-SPC700 Sound File Data v0.30',26,26,26
    // 0036: version:	$1e
    // 0037: SPC700 PC:
    // 0039: SPC700 A:
    // 0040: SPC700 X:
    // 0041: SPC700 Y:
    // 0042: SPC700 P:
    // 0043: SPC700 S:
    // 0044: Reserved: 0, 0, 0, 0
    // 0048: Title of game: 32 bytes
    // 0000: Song name: 32 bytes
    // 0000: Name of dumper: 32 bytes
    // 0000: Comments: 32 bytes
    // 0000: Date of SPC dump: 4 bytes
    // 0000: Fade out time in milliseconds: 4 bytes
    // 0000: Fade out length in milliseconds: 2 bytes
    // 0000: Default channel enables: 1 bytes
    // 0000: Emulator used to dump .SPC files: 1 byte, 1 == ZSNES
    // 0000: Reserved: 36 bytes
    // 0256: SPC700 RAM: 64K
    // ----: DSP Registers: 256 bytes
	
    if (fwrite (header, sizeof (header), 1, fs) != 1 ||
		fputc (version, fs) == EOF ||
		fseek (fs, 37, SEEK_SET) == EOF ||
		fputc (APURegisters.PC & 0xff, fs) == EOF ||
		fputc (APURegisters.PC >> 8, fs) == EOF ||
		fputc (APURegisters.YA.B.A, fs) == EOF ||
		fputc (APURegisters.X, fs) == EOF ||
		fputc (APURegisters.YA.B.Y, fs) == EOF ||
		fputc (APURegisters.P, fs) == EOF ||
		fputc (APURegisters.S, fs) == EOF ||
		fseek (fs, 256, SEEK_SET) == EOF ||
		fwrite (IAPU.RAM, 0x10000, 1, fs) != 1 ||
		fwrite (spc_dump_dsp, 1, 256, fs) != 256 ||
		fwrite (APU.ExtraRAM, 64, 1, fs) != 1 ||
		fclose (fs) < 0)
    {
		S9xSetSoundMute (FALSE);
		return (FALSE);
    }
    S9xSetSoundMute (FALSE);
    return (TRUE);
}

bool8 S9xUnfreezeZSNES (const char *filename)
{
    FILE *fs;
    uint8 t [4000];
	
    if (!(fs = fopen (filename, "rb")))
		return (FALSE);
	
    if (fread (t, 64, 1, fs) == 1 &&
		strncmp ((char *) t, "ZSNES Save State File V0.6", 26) == 0)
    {
		S9xReset ();
		S9xSetSoundMute (TRUE);
		
		// 28 Curr cycle
		CPU.V_Counter = READ_WORD (&t [29]);
		// 33 instrset
		Settings.APUEnabled = t [36];
		
		// 34 bcycpl cycles per scanline
		// 35 cycphb cyclers per hblank
		
		Registers.A.W   = READ_WORD (&t [41]);
		Registers.DB    = t [43];
		Registers.PB    = t [44];
		Registers.S.W   = READ_WORD (&t [45]);
		Registers.D.W   = READ_WORD (&t [47]);
		Registers.X.W   = READ_WORD (&t [49]);
		Registers.Y.W   = READ_WORD (&t [51]);
		Registers.P.W   = READ_WORD (&t [53]);
		Registers.PCw   = READ_WORD (&t [55]);
		
		fread (t, 1, 8, fs);
		fread (t, 1, 3019, fs);
		S9xSetCPU (t [2], 0x4200);
		Memory.FillRAM [0x4210] = t [3];
		PPU.IRQVBeamPos = READ_WORD (&t [4]);
		PPU.IRQHBeamPos = READ_WORD (&t [2527]);
		PPU.Brightness = t [6];
		PPU.ForcedBlanking = t [8] >> 7;
		
		int i;
		for (i = 0; i < 544; i++)
			S9xSetPPU (t [0464 + i], 0x2104);
		
		PPU.OBJNameBase = READ_WORD (&t [9]);
		PPU.OBJNameSelect = READ_WORD (&t [13]) - PPU.OBJNameBase;
		switch (t [18])
		{
		case 4:
			if (t [17] == 1)
				PPU.OBJSizeSelect = 0;
			else
				PPU.OBJSizeSelect = 6;
			break;
		case 16:
			if (t [17] == 1)
				PPU.OBJSizeSelect = 1;
			else
				PPU.OBJSizeSelect = 3;
			break;
		default:
		case 64:
			if (t [17] == 1)
				PPU.OBJSizeSelect = 2;
			else
				if (t [17] == 4)
					PPU.OBJSizeSelect = 4;
				else
					PPU.OBJSizeSelect = 5;
				break;
		}
		PPU.OAMAddr = READ_WORD (&t [25]);
		PPU.SavedOAMAddr =  READ_WORD (&t [27]);
		PPU.FirstSprite = t [29];
		PPU.BGMode = t [30];
		PPU.BG3Priority = t [31];
		PPU.BG[0].BGSize = (t [32] >> 0) & 1;
		PPU.BG[1].BGSize = (t [32] >> 1) & 1;
		PPU.BG[2].BGSize = (t [32] >> 2) & 1;
		PPU.BG[3].BGSize = (t [32] >> 3) & 1;
		PPU.Mosaic = t [33] + 1;
		PPU.BGMosaic [0] = (t [34] & 1) != 0;
		PPU.BGMosaic [1] = (t [34] & 2) != 0;
		PPU.BGMosaic [2] = (t [34] & 4) != 0;
		PPU.BGMosaic [3] = (t [34] & 8) != 0;
		PPU.BG [0].SCBase = READ_WORD (&t [35]) >> 1;
		PPU.BG [1].SCBase = READ_WORD (&t [37]) >> 1;
		PPU.BG [2].SCBase = READ_WORD (&t [39]) >> 1;
		PPU.BG [3].SCBase = READ_WORD (&t [41]) >> 1;
		PPU.BG [0].SCSize = t [67];
		PPU.BG [1].SCSize = t [68];
		PPU.BG [2].SCSize = t [69];
		PPU.BG [3].SCSize = t [70];
		PPU.BG[0].NameBase = READ_WORD (&t [71]) >> 1;
		PPU.BG[1].NameBase = READ_WORD (&t [73]) >> 1;
		PPU.BG[2].NameBase = READ_WORD (&t [75]) >> 1;
		PPU.BG[3].NameBase = READ_WORD (&t [77]) >> 1;
		PPU.BG[0].HOffset = READ_WORD (&t [79]);
		PPU.BG[1].HOffset = READ_WORD (&t [81]);
		PPU.BG[2].HOffset = READ_WORD (&t [83]);
		PPU.BG[3].HOffset = READ_WORD (&t [85]);
		PPU.BG[0].VOffset = READ_WORD (&t [89]);
		PPU.BG[1].VOffset = READ_WORD (&t [91]);
		PPU.BG[2].VOffset = READ_WORD (&t [93]);
		PPU.BG[3].VOffset = READ_WORD (&t [95]);
		PPU.VMA.Increment = READ_WORD (&t [97]) >> 1;
		PPU.VMA.High = t [99];
#ifndef CORRECT_VRAM_READS
                IPPU.FirstVRAMRead = t [100];
#endif
		S9xSetPPU (t [2512], 0x2115);
		PPU.VMA.Address = READ_DWORD (&t [101]);
		for (i = 0; i < 512; i++)
			S9xSetPPU (t [1488 + i], 0x2122);
		
		PPU.CGADD = (uint8) READ_WORD (&t [105]);
		Memory.FillRAM [0x212c] = t [108];
		Memory.FillRAM [0x212d] = t [109];
		PPU.ScreenHeight = READ_WORD (&t [111]);
		Memory.FillRAM [0x2133] = t [2526];
		Memory.FillRAM [0x4202] = t [113];
		Memory.FillRAM [0x4204] = t [114];
		Memory.FillRAM [0x4205] = t [115];
		Memory.FillRAM [0x4214] = t [116];
		Memory.FillRAM [0x4215] = t [117];
		Memory.FillRAM [0x4216] = t [118];
		Memory.FillRAM [0x4217] = t [119];
		PPU.VBeamPosLatched = READ_WORD (&t [122]);
		PPU.HBeamPosLatched = READ_WORD (&t [120]);
		PPU.Window1Left = t [127];
		PPU.Window1Right = t [128];
		PPU.Window2Left = t [129];
		PPU.Window2Right = t [130];
		S9xSetPPU (t [131] | (t [132] << 4), 0x2123);
		S9xSetPPU (t [133] | (t [134] << 4), 0x2124);
		S9xSetPPU (t [135] | (t [136] << 4), 0x2125);
		S9xSetPPU (t [137], 0x212a);
		S9xSetPPU (t [138], 0x212b);
		S9xSetPPU (t [139], 0x212e);
		S9xSetPPU (t [140], 0x212f);
		S9xSetPPU (t [141], 0x211a);
		PPU.MatrixA = READ_WORD (&t [142]);
		PPU.MatrixB = READ_WORD (&t [144]);
		PPU.MatrixC = READ_WORD (&t [146]);
		PPU.MatrixD = READ_WORD (&t [148]);
		PPU.CentreX = READ_WORD (&t [150]);
		PPU.CentreY = READ_WORD (&t [152]);
                PPU.M7HOFS  = PPU.BG[0].HOffset;
                PPU.M7VOFS  = PPU.BG[0].VOffset;
		// JoyAPos t[154]
		// JoyBPos t[155]
		Memory.FillRAM [0x2134] = t [156]; // Matrix mult
		Memory.FillRAM [0x2135] = t [157]; // Matrix mult
		Memory.FillRAM [0x2136] = t [158]; // Matrix mult
		PPU.WRAM = READ_DWORD (&t [161]);
		
		for (i = 0; i < 128; i++)
			S9xSetCPU (t [165 + i], 0x4300 + i);
		
		if (t [294])
			CPU.IRQActive |= PPU_V_BEAM_IRQ_SOURCE | PPU_H_BEAM_IRQ_SOURCE;
		
		S9xSetCPU (t [296], 0x420c);
		// hdmadata t[297] + 8 * 19
		PPU.FixedColourRed = t [450];
		PPU.FixedColourGreen = t [451];
		PPU.FixedColourBlue = t [452];
		S9xSetPPU (t [454], 0x2130);
		S9xSetPPU (t [455], 0x2131);
		// vraminctype ...
		
		fread (Memory.RAM, 1, 128 * 1024, fs);
		fread (Memory.VRAM, 1, 64 * 1024, fs);
		
		if (Settings.APUEnabled)
		{
			// SNES SPC700 RAM (64K)
			fread (IAPU.RAM, 1, 64 * 1024, fs);
			
			// Junk 16 bytes
			fread (t, 1, 16, fs);
			
			// SNES SPC700 state and internal ZSNES SPC700 emulation state
			fread (t, 1, 304, fs);
			
			APURegisters.PC   = READ_DWORD (&t [0]);
			APURegisters.YA.B.A = t [4];
			APURegisters.X    = t [8];
			APURegisters.YA.B.Y = t [12];
			APURegisters.P    = t [16];
			APURegisters.S    = t [24];
			
			APU.Cycles = READ_DWORD (&t [32]);
			APU.ShowROM = (IAPU.RAM [0xf1] & 0x80) != 0;
			APU.OutPorts [0] = t [36];
			APU.OutPorts [1] = t [37];
			APU.OutPorts [2] = t [38];
			APU.OutPorts [3] = t [39];
			
			APU.TimerEnabled [0] = (t [40] & 1) != 0;
			APU.TimerEnabled [1] = (t [40] & 2) != 0;
			APU.TimerEnabled [2] = (t [40] & 4) != 0;
			S9xSetAPUTimer (0xfa, t [41]);
			S9xSetAPUTimer (0xfb, t [42]);
			S9xSetAPUTimer (0xfc, t [43]);
			APU.Timer [0] = t [44];
			APU.Timer [1] = t [45];
			APU.Timer [2] = t [46];
			
			memmove (APU.ExtraRAM, &t [48], 64);
			
			// Internal ZSNES sound DSP state
			fread (t, 1, 1068, fs);
			
			// SNES sound DSP register values
			fread (t, 1, 256, fs);
			
			uint8 saved = IAPU.RAM [0xf2];
			
			for (i = 0; i < 128; i++)
			{
				switch (i)
				{
				case APU_KON:
				case APU_KOFF:
					break;
				case APU_FLG:
					t [i] &= ~APU_SOFT_RESET;
				default:
					IAPU.RAM [0xf2] = i;
					S9xSetAPUDSP (t [i]);
					break;
				}
			}
			IAPU.RAM [0xf2] = APU_KON;
			S9xSetAPUDSP (t [APU_KON]);
			IAPU.RAM [0xf2] = saved;
			
			S9xSetSoundMute (FALSE);
			IAPU.PC = IAPU.RAM + APURegisters.PC;
			S9xAPUUnpackStatus ();
			if (APUCheckDirectPage ())
				IAPU.DirectPage = IAPU.RAM + 0x100;
			else
				IAPU.DirectPage = IAPU.RAM;
			Settings.APUEnabled = TRUE;
			IAPU.APUExecuting = TRUE;
		}
		else
		{
			Settings.APUEnabled = FALSE;
			IAPU.APUExecuting = FALSE;
			S9xSetSoundMute (TRUE);
		}
		
		if (Settings.SuperFX)
		{
			fread (::SRAM, 1, 64 * 1024, fs);
			fseek (fs, 64 * 1024, SEEK_CUR);
			fread (Memory.FillRAM + 0x7000, 1, 692, fs);
		}
		if (Settings.SA1)
		{
			fread (t, 1, 2741, fs);
			S9xSetSA1 (t [4], 0x2200);  // Control
			S9xSetSA1 (t [12], 0x2203);	// ResetV low
			S9xSetSA1 (t [13], 0x2204); // ResetV hi
			S9xSetSA1 (t [14], 0x2205); // NMI low
			S9xSetSA1 (t [15], 0x2206); // NMI hi
			S9xSetSA1 (t [16], 0x2207); // IRQ low
			S9xSetSA1 (t [17], 0x2208); // IRQ hi
			S9xSetSA1 (((READ_DWORD (&t [28]) - (4096*1024-0x6000))) >> 13, 0x2224);
			S9xSetSA1 (t [36], 0x2201);
			S9xSetSA1 (t [41], 0x2209);
			
			SA1Registers.A.W = READ_DWORD (&t [592]);
			SA1Registers.X.W = READ_DWORD (&t [596]);
			SA1Registers.Y.W = READ_DWORD (&t [600]);
			SA1Registers.D.W = READ_DWORD (&t [604]);
			SA1Registers.DB  = t [608];
			SA1Registers.PB  = t [612];
			SA1Registers.S.W = READ_DWORD (&t [616]);
			SA1Registers.PCw = READ_DWORD (&t [636]);
			SA1Registers.P.W = t [620] | (t [624] << 8);
			
			memmove (&Memory.FillRAM [0x3000], t + 692, 2 * 1024);
			
			fread (::SRAM, 1, 64 * 1024, fs);
			fseek (fs, 64 * 1024, SEEK_CUR);
			S9xFixSA1AfterSnapshotLoad ();
		}
		if(Settings.SPC7110)
		{
			uint32 temp;
			fread(&s7r.bank50, 1,0x10000, fs);
			
			//NEWSYM SPCMultA, dd 0  4820-23
			fread(&temp, 1, 4, fs);
			
			s7r.reg4820=temp&(0x0FF);
			s7r.reg4821=(temp>>8)&(0x0FF);
			s7r.reg4822=(temp>>16)&(0x0FF);
			s7r.reg4823=(temp>>24)&(0x0FF);

			//NEWSYM SPCMultB, dd 0				4824-5
			fread(&temp, 1,4,fs);
			s7r.reg4824=temp&(0x0FF);
			s7r.reg4825=(temp>>8)&(0x0FF);


			//NEWSYM SPCDivEnd, dd 0				4826-7
			fread(&temp, 1,4,fs);
			s7r.reg4826=temp&(0x0FF);
			s7r.reg4827=(temp>>8)&(0x0FF);

			//NEWSYM SPCMulRes, dd 0				4828-B
			fread(&temp, 1, 4, fs);
			
			s7r.reg4828=temp&(0x0FF);
			s7r.reg4829=(temp>>8)&(0x0FF);
			s7r.reg482A=(temp>>16)&(0x0FF);
			s7r.reg482B=(temp>>24)&(0x0FF);
			
			//NEWSYM SPCDivRes, dd 0				482C-D
			fread(&temp, 1,4,fs);
			s7r.reg482C=temp&(0x0FF);
			s7r.reg482D=(temp>>8)&(0x0FF);

			//NEWSYM SPC7110BankA, dd 020100h		4831-3
			fread(&temp, 1, 4, fs);
			
			s7r.reg4831=temp&(0x0FF);
			s7r.reg4832=(temp>>8)&(0x0FF);
			s7r.reg4833=(temp>>16)&(0x0FF);
			
			//NEWSYM SPC7110RTCStat, dd 0			4840,init,command, index
			fread(&temp, 1, 4, fs);
			
			s7r.reg4840=temp&(0x0FF);

//NEWSYM SPC7110RTC, db 00,00,00,00,00,00,01,00,01,00,00,00,00,00,0Fh,00
fread(&temp, 1, 4, fs);
if(Settings.SPC7110RTC)
{
	rtc_f9.reg[0]=temp&(0x0FF);
	rtc_f9.reg[1]=(temp>>8)&(0x0FF);
	rtc_f9.reg[2]=(temp>>16)&(0x0FF);
	rtc_f9.reg[3]=(temp>>24)&(0x0FF);
}
fread(&temp, 1, 4, fs);
if(Settings.SPC7110RTC)
{
	rtc_f9.reg[4]=temp&(0x0FF);
	rtc_f9.reg[5]=(temp>>8)&(0x0FF);
	rtc_f9.reg[6]=(temp>>16)&(0x0FF);
	rtc_f9.reg[7]=(temp>>24)&(0x0FF);
}
fread(&temp, 1, 4, fs);
if(Settings.SPC7110RTC)
{
	rtc_f9.reg[8]=temp&(0x0FF);
	rtc_f9.reg[9]=(temp>>8)&(0x0FF);
	rtc_f9.reg[10]=(temp>>16)&(0x0FF);
	rtc_f9.reg[11]=(temp>>24)&(0x0FF);
}
fread(&temp, 1, 4, fs);
if(Settings.SPC7110RTC)
{
	rtc_f9.reg[12]=temp&(0x0FF);
	rtc_f9.reg[13]=(temp>>8)&(0x0FF);
	rtc_f9.reg[14]=(temp>>16)&(0x0FF);
	rtc_f9.reg[15]=(temp>>24)&(0x0FF);
}
//NEWSYM SPC7110RTCB, db 00,00,00,00,00,00,01,00,01,00,00,00,00,01,0Fh,06
fread(&temp, 1, 4, fs);
fread(&temp, 1, 4, fs);
fread(&temp, 1, 4, fs);
fread(&temp, 1, 4, fs);

//NEWSYM SPCROMPtr, dd 0		4811-4813
			fread(&temp, 1, 4, fs);
			
			s7r.reg4811=temp&(0x0FF);
			s7r.reg4812=(temp>>8)&(0x0FF);
			s7r.reg4813=(temp>>16)&(0x0FF);
//NEWSYM SPCROMtoI, dd SPCROMPtr
			fread(&temp, 1, 4, fs);
//NEWSYM SPCROMAdj, dd 0      4814-5
			fread(&temp, 1, 4, fs);
			s7r.reg4814=temp&(0x0FF);
			s7r.reg4815=(temp>>8)&(0x0FF);
//NEWSYM SPCROMInc, dd 0		4816-7
			fread(&temp, 1, 4, fs);
			s7r.reg4816=temp&(0x0FF);
			s7r.reg4817=(temp>>8)&(0x0FF);
//NEWSYM SPCROMCom, dd 0		4818
fread(&temp, 1, 4, fs);
			
			s7r.reg4818=temp&(0x0FF);
//NEWSYM SPCCompPtr, dd 0  4801-4804 (+b50i) if"manual"
			fread(&temp, 1, 4, fs);

			//do table check
			
			s7r.reg4801=temp&(0x0FF);
			s7r.reg4802=(temp>>8)&(0x0FF);
			s7r.reg4803=(temp>>16)&(0x0FF);
			s7r.reg4804=(temp>>24)&(0x0FF);
///NEWSYM SPCDecmPtr, dd 0  4805-6   +b50i
			fread(&temp, 1, 4, fs);
			s7r.reg4805=temp&(0x0FF);
			s7r.reg4806=(temp>>8)&(0x0FF);
//NEWSYM SPCCompCounter, dd 0  4809-A
			fread(&temp, 1, 4, fs);
			s7r.reg4809=temp&(0x0FF);
			s7r.reg480A=(temp>>8)&(0x0FF);
//NEWSYM SPCCompCommand, dd 0  480B
fread(&temp, 1, 4, fs);
			
			s7r.reg480B=temp&(0x0FF);
//NEWSYM SPCCheckFix, dd 0		written(if 1, then set writtne to max value!)
fread(&temp, 1, 4, fs);
(temp&(0x0FF))?s7r.written=0x1F:s7r.written=0x00;
//NEWSYM SPCSignedVal, dd 0	482E
fread(&temp, 1, 4, fs);
			
			s7r.reg482E=temp&(0x0FF);
			
		}
		fclose (fs);
		
		Memory.FixROMSpeed ();
		IPPU.ColorsChanged = TRUE;
		IPPU.OBJChanged = TRUE;
		CPU.InDMA = CPU.InWRAM_DMA = FALSE;
		S9xFixColourBrightness ();
		IPPU.RenderThisFrame = FALSE;
		
		S9xFixSoundAfterSnapshotLoad (1);
		ICPU.ShiftedPB = Registers.PB << 16;
		ICPU.ShiftedDB = Registers.DB << 16;
		S9xSetPCBase (Registers.PBPC);
		S9xUnpackStatus ();
		S9xFixCycles ();
		S9xReschedule ();
#ifdef ZSNES_FX
		if (Settings.SuperFX)
			S9xSuperFXPostLoadState ();
#endif
		return (TRUE);
    }
    fclose (fs);
    return (FALSE);
}