+++ /dev/null
-/*
- * Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
- *
- * (c) Copyright 1996 - 2001 Gary Henderson (gary.henderson@ntlworld.com) and
- * Jerremy Koot (jkoot@snes9x.com)
- *
- * Super FX C emulator code
- * (c) Copyright 1997 - 1999 Ivar (ivar@snes9x.com) and
- * Gary Henderson.
- * Super FX assembler emulator code (c) Copyright 1998 zsKnight and _Demo_.
- *
- * DSP1 emulator code (c) Copyright 1998 Ivar, _Demo_ and Gary Henderson.
- * C4 asm and some C emulation code (c) Copyright 2000 zsKnight and _Demo_.
- * C4 C code (c) Copyright 2001 Gary Henderson (gary.henderson@ntlworld.com).
- *
- * DOS port code contains the works of other authors. See headers in
- * individual files.
- *
- * Snes9x homepage: http://www.snes9x.com
- *
- * Permission to use, copy, modify and 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.
- *
- * Snes9x is freeware for PERSONAL USE only. Commercial users should
- * seek permission of the copyright holders first. Commercial use includes
- * charging money for Snes9x or software derived from Snes9x.
- *
- * 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>
-#include <ctype.h>
-#include <stdlib.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"
-#include "snaporig.h"
-#include "memmap.h"
-#include "snes9x.h"
-#include "65c816.h"
-#include "ppu.h"
-#include "cpuexec.h"
-#include "display.h"
-#include "apu.h"
-#include "soundux.h"
-
-struct SOrigPPU OrigPPU;
-struct SOrigDMA OrigDMA [8];
-struct SOrigRegisters OrigRegisters;
-struct SOrigCPUState OrigCPU;
-struct SOrigAPU OrigAPU;
-SOrigSoundData OrigSoundData;
-struct SOrigAPURegisters OrigAPURegisters;
-char ROMFilename [1025];
-
-static int ReadOrigSnapshot (STREAM);
-
-bool8_32 S9xLoadOrigSnapshot (const char *filename)
-{
- STREAM snapshot = NULL;
- if (S9xOpenSnapshotFile (filename, TRUE, &snapshot))
- {
- int result;
- if ((result = ReadOrigSnapshot (snapshot)) != SUCCESS)
- {
- S9xCloseSnapshotFile (snapshot);
- return (FALSE);
- }
- S9xCloseSnapshotFile (snapshot);
- return (TRUE);
- }
- return (FALSE);
-}
-
-#ifdef _SNESPPC
-#pragma warning(disable : 4018)
-#endif
-static int ReadBlock (const char *key, void *block, int max_len, STREAM snap)
-{
- char buffer [20];
- int len = 0;
- int rem = 0;
-
- if (READ_STREAM (buffer, 11, snap) != 11 ||
- strncmp (buffer, key, 4) != 0 ||
- (len = atoi (&buffer [4])) == 0)
- return (WRONG_FORMAT);
-
- if (len > max_len)
- {
- rem = len - max_len;
- len = max_len;
- }
- if (READ_STREAM (block, len, snap) != len)
- return (WRONG_FORMAT);
-
- if (rem)
- {
- char *junk = new char [rem];
- READ_STREAM (junk, rem, snap);
- delete junk;
- }
-
- return (SUCCESS);
-}
-
-static int ReadOrigSnapshot (STREAM snap)
-{
- char buffer [_MAX_PATH];
- char rom_filename [_MAX_PATH];
- int result;
- int i;
- int j;
-
- int version;
- int len = strlen (ORIG_SNAPSHOT_MAGIC) + 1 + 4 + 1;
- if (READ_STREAM (buffer, len, snap) != len)
- return (WRONG_FORMAT);
- if (strncmp (buffer, ORIG_SNAPSHOT_MAGIC, strlen (ORIG_SNAPSHOT_MAGIC)) != 0)
- return (WRONG_FORMAT);
- if ((version = atoi (&buffer [strlen (SNAPSHOT_MAGIC) + 1])) > ORIG_SNAPSHOT_VERSION)
- return (WRONG_VERSION);
-
- if ((result = ReadBlock ("NAM:", rom_filename, _MAX_PATH, snap)) != SUCCESS)
- return (result);
-
- if ((result = ReadBlock ("HiR:", buffer, 0x41, snap)) != SUCCESS)
- return (result);
-
- 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.");
- }
-
- S9xReset ();
- S9xSetSoundMute (TRUE);
- if ((result = ReadBlock ("CPU:", &OrigCPU, sizeof (OrigCPU), snap)) != SUCCESS)
- return (result);
- OrigCPU.FastROMSpeed = OrigCPU.FastROMSpeed_old;
- Memory.FixROMSpeed ();
- if (version == 3)
- {
- OrigCPU.Cycles = OrigCPU.Cycles_old;
- OrigCPU.NextEvent = OrigCPU.NextEvent_old;
- OrigCPU.V_Counter = OrigCPU.V_Counter_old;
- OrigCPU.MemSpeed = OrigCPU.MemSpeed_old;
- OrigCPU.MemSpeedx2 = OrigCPU.MemSpeedx2_old;
- OrigCPU.FastROMSpeed = OrigCPU.FastROMSpeed_old;
- }
- CPU.Flags = OrigCPU.Flags;
- CPU.BranchSkip = OrigCPU.BranchSkip;
- CPU.NMIActive = OrigCPU.NMIActive;
- CPU.IRQActive = OrigCPU.IRQActive;
- CPU.WaitingForInterrupt = OrigCPU.WaitingForInterrupt;
- CPU.WhichEvent = OrigCPU.WhichEvent;
- CPU.Cycles = OrigCPU.Cycles;
- CPU.NextEvent = OrigCPU.NextEvent;
- CPU.V_Counter = OrigCPU.V_Counter;
- CPU.MemSpeed = OrigCPU.MemSpeed;
- CPU.MemSpeedx2 = OrigCPU.MemSpeedx2;
- CPU.FastROMSpeed = OrigCPU.FastROMSpeed;
-
- if ((result = ReadBlock ("REG:", &OrigRegisters, sizeof (OrigRegisters), snap)) != SUCCESS)
- return (result);
-
- Registers = *(struct SRegisters *) &OrigRegisters;
-
- if ((result = ReadBlock ("PPU:", &OrigPPU, sizeof (OrigPPU), snap)) != SUCCESS)
- return (result);
-
- if (version == 2)
- {
- OrigPPU.OBJNameSelect = OrigPPU.OBJNameSelect_old << 13;
- OrigPPU.OBJNameBase <<= 1;
- OrigPPU.OBJNameSelect <<= 13;
- }
- PPU.BGMode = OrigPPU.BGMode;
- PPU.BG3Priority = OrigPPU.BG3Priority;
- PPU.Brightness = OrigPPU.Brightness;
-
- PPU.VMA.High = OrigPPU.VMA.High;
- PPU.VMA.Increment = OrigPPU.VMA.Increment;
- PPU.VMA.Address = OrigPPU.VMA.Address;
- PPU.VMA.Mask1 = OrigPPU.VMA.Mask1;
- PPU.VMA.FullGraphicCount = OrigPPU.VMA.FullGraphicCount;
- PPU.VMA.Shift = OrigPPU.VMA.Shift;
-
- for (i = 0; i < 4; i++)
- {
- PPU.BG[i].SCBase = OrigPPU.BG[i].SCBase;
- PPU.BG[i].VOffset = OrigPPU.BG[i].VOffset;
- PPU.BG[i].HOffset = OrigPPU.BG[i].HOffset;
- PPU.BG[i].BGSize = OrigPPU.BG[i].BGSize;
- PPU.BG[i].NameBase = OrigPPU.BG[i].NameBase;
- PPU.BG[i].SCSize = OrigPPU.BG[i].SCSize;
- }
-
- PPU.CGFLIP = OrigPPU.CGFLIP;
- for (i = 0; i < 256; i++)
- PPU.CGDATA [i] = OrigPPU.CGDATA [i];
- PPU.FirstSprite = OrigPPU.FirstSprite;
- for (i = 0; i < 128; i++)
- {
- PPU.OBJ[i].HPos = OrigPPU.OBJ [i].HPos;
- PPU.OBJ[i].VPos = OrigPPU.OBJ [i].VPos;
- PPU.OBJ[i].Name = OrigPPU.OBJ [i].Name;
- PPU.OBJ[i].VFlip = OrigPPU.OBJ [i].VFlip;
- PPU.OBJ[i].HFlip = OrigPPU.OBJ [i].HFlip;
- PPU.OBJ[i].Priority = OrigPPU.OBJ [i].Priority;
- PPU.OBJ[i].Palette = OrigPPU.OBJ [i].Palette;
- PPU.OBJ[i].Size = OrigPPU.OBJ [i].Size;
- }
- PPU.OAMPriorityRotation = OrigPPU.OAMPriorityRotation;
- PPU.OAMAddr = OrigPPU.OAMAddr;
-
- PPU.OAMFlip = OrigPPU.OAMFlip;
- PPU.OAMTileAddress = OrigPPU.OAMTileAddress;
- PPU.IRQVBeamPos = OrigPPU.IRQVBeamPos;
- PPU.IRQHBeamPos = OrigPPU.IRQHBeamPos;
- PPU.VBeamPosLatched = OrigPPU.VBeamPosLatched;
- PPU.HBeamPosLatched = OrigPPU.HBeamPosLatched;
-
- PPU.HBeamFlip = OrigPPU.HBeamFlip;
- PPU.VBeamFlip = OrigPPU.VBeamFlip;
- PPU.HVBeamCounterLatched = OrigPPU.HVBeamCounterLatched;
-
- PPU.MatrixA = OrigPPU.MatrixA;
- PPU.MatrixB = OrigPPU.MatrixB;
- PPU.MatrixC = OrigPPU.MatrixC;
- PPU.MatrixD = OrigPPU.MatrixD;
- PPU.CentreX = OrigPPU.CentreX;
- PPU.CentreY = OrigPPU.CentreY;
- PPU.Joypad1ButtonReadPos = OrigPPU.Joypad1ButtonReadPos;
- PPU.Joypad2ButtonReadPos = OrigPPU.Joypad2ButtonReadPos;
- PPU.Joypad3ButtonReadPos = OrigPPU.Joypad3ButtonReadPos;
-
- PPU.CGADD = OrigPPU.CGADD;
- PPU.FixedColourRed = OrigPPU.FixedColourRed;
- PPU.FixedColourGreen = OrigPPU.FixedColourGreen;
- PPU.FixedColourBlue = OrigPPU.FixedColourBlue;
- PPU.SavedOAMAddr = OrigPPU.SavedOAMAddr;
- PPU.ScreenHeight = OrigPPU.ScreenHeight;
- PPU.WRAM = OrigPPU.WRAM;
- PPU.ForcedBlanking = OrigPPU.ForcedBlanking;
- PPU.OBJNameSelect = OrigPPU.OBJNameSelect;
- PPU.OBJSizeSelect = OrigPPU.OBJSizeSelect;
- PPU.OBJNameBase = OrigPPU.OBJNameBase;
- PPU.OAMReadFlip = OrigPPU.OAMReadFlip;
- memmove (PPU.OAMData, OrigPPU.OAMData, sizeof (PPU.OAMData));
- PPU.VTimerEnabled = OrigPPU.VTimerEnabled;
- PPU.HTimerEnabled = OrigPPU.HTimerEnabled;
- PPU.HTimerPosition = OrigPPU.HTimerPosition;
- PPU.Mosaic = OrigPPU.Mosaic;
- memmove (PPU.BGMosaic, OrigPPU.BGMosaic, sizeof (PPU.BGMosaic));
- PPU.Mode7HFlip = OrigPPU.Mode7HFlip;
- PPU.Mode7VFlip = OrigPPU.Mode7VFlip;
- PPU.Mode7Repeat = OrigPPU.Mode7Repeat;
- PPU.Window1Left = OrigPPU.Window1Left;
- PPU.Window1Right = OrigPPU.Window1Right;
- PPU.Window2Left = OrigPPU.Window2Left;
- PPU.Window2Right = OrigPPU.Window2Right;
- for (i = 0; i < 6; i++)
- {
- PPU.ClipWindowOverlapLogic [i] = OrigPPU.ClipWindowOverlapLogic [i];
- PPU.ClipWindow1Enable [i] = OrigPPU.ClipWindow1Enable [i];
- PPU.ClipWindow2Enable [i] = OrigPPU.ClipWindow2Enable [i];
- PPU.ClipWindow1Inside [i] = OrigPPU.ClipWindow1Inside [i];
- PPU.ClipWindow2Inside [i] = OrigPPU.ClipWindow2Inside [i];
- }
- PPU.CGFLIPRead = OrigPPU.CGFLIPRead;
- PPU.Need16x8Mulitply = OrigPPU.Need16x8Mulitply;
-
- IPPU.ColorsChanged = TRUE;
- IPPU.OBJChanged = TRUE;
- S9xFixColourBrightness ();
- IPPU.RenderThisFrame = FALSE;
-
- if ((result = ReadBlock ("DMA:", OrigDMA, sizeof (OrigDMA), snap)) != SUCCESS)
- return (result);
-
- for (i = 0; i < 8; i++)
- {
- DMA[i].TransferDirection = OrigDMA[i].TransferDirection;
- DMA[i].AAddressFixed = OrigDMA[i].AAddressFixed;
- DMA[i].AAddressDecrement = OrigDMA[i].AAddressDecrement;
- DMA[i].TransferMode = OrigDMA[i].TransferMode;
- DMA[i].ABank = OrigDMA[i].ABank;
- DMA[i].AAddress = OrigDMA[i].AAddress;
- DMA[i].Address = OrigDMA[i].Address;
- DMA[i].BAddress = OrigDMA[i].BAddress;
- DMA[i].TransferBytes = OrigDMA[i].TransferBytes;
- DMA[i].HDMAIndirectAddressing = OrigDMA[i].HDMAIndirectAddressing;
- DMA[i].IndirectAddress = OrigDMA[i].IndirectAddress;
- DMA[i].IndirectBank = OrigDMA[i].IndirectBank;
- DMA[i].Repeat = OrigDMA[i].Repeat;
- DMA[i].LineCount = OrigDMA[i].LineCount;
- DMA[i].FirstLine = OrigDMA[i].FirstLine;
- }
-
- if ((result = ReadBlock ("VRA:", Memory.VRAM, 0x10000, snap)) != SUCCESS)
- return (result);
- if ((result = ReadBlock ("RAM:", Memory.RAM, 0x20000, snap)) != SUCCESS)
- return (result);
- if ((result = ReadBlock ("SRA:", ::SRAM, 0x10000, snap)) != SUCCESS)
- return (result);
- if ((result = ReadBlock ("FIL:", Memory.FillRAM, 0x8000, snap)) != SUCCESS)
- return (result);
- if (ReadBlock ("APU:", &OrigAPU, sizeof (OrigAPU), snap) == SUCCESS)
- {
- APU = *(struct SAPU *) &OrigAPU;
-
- if ((result = ReadBlock ("ARE:", &OrigAPURegisters,
- sizeof (OrigAPURegisters), snap)) != SUCCESS)
- return (result);
- APURegisters = *(struct SAPURegisters *) &OrigAPURegisters;
- if ((result = ReadBlock ("ARA:", IAPU.RAM, 0x10000, snap)) != SUCCESS)
- return (result);
- if ((result = ReadBlock ("SOU:", &OrigSoundData,
- sizeof (SOrigSoundData), snap)) != SUCCESS)
- return (result);
-
- SoundData.master_volume_left = OrigSoundData.master_volume_left;
- SoundData.master_volume_right = OrigSoundData.master_volume_right;
- SoundData.echo_volume_left = OrigSoundData.echo_volume_left;
- SoundData.echo_volume_right = OrigSoundData.echo_volume_right;
- SoundData.echo_enable = OrigSoundData.echo_enable;
- SoundData.echo_feedback = OrigSoundData.echo_feedback;
- SoundData.echo_ptr = OrigSoundData.echo_ptr;
- SoundData.echo_buffer_size = OrigSoundData.echo_buffer_size;
- SoundData.echo_write_enabled = OrigSoundData.echo_write_enabled;
- SoundData.echo_channel_enable = OrigSoundData.echo_channel_enable;
- SoundData.pitch_mod = OrigSoundData.pitch_mod;
-
- for (i = 0; i < 3; i++)
- SoundData.dummy [i] = OrigSoundData.dummy [i];
- for (i = 0; i < NUM_CHANNELS; i++)
- {
- SoundData.channels [i].state = OrigSoundData.channels [i].state;
- SoundData.channels [i].type = OrigSoundData.channels [i].type;
- SoundData.channels [i].volume_left = OrigSoundData.channels [i].volume_left;
- SoundData.channels [i].volume_right = OrigSoundData.channels [i].volume_right;
- SoundData.channels [i].hertz = OrigSoundData.channels [i].frequency;
- SoundData.channels [i].count = OrigSoundData.channels [i].count;
- SoundData.channels [i].loop = OrigSoundData.channels [i].loop;
- SoundData.channels [i].envx = OrigSoundData.channels [i].envx;
- SoundData.channels [i].left_vol_level = OrigSoundData.channels [i].left_vol_level;
- SoundData.channels [i].right_vol_level = OrigSoundData.channels [i].right_vol_level;
- SoundData.channels [i].envx_target = OrigSoundData.channels [i].envx_target;
- SoundData.channels [i].env_error = OrigSoundData.channels [i].env_error;
- SoundData.channels [i].erate = OrigSoundData.channels [i].erate;
- SoundData.channels [i].direction = OrigSoundData.channels [i].direction;
- SoundData.channels [i].attack_rate = OrigSoundData.channels [i].attack_rate;
- SoundData.channels [i].decay_rate = OrigSoundData.channels [i].decay_rate;
- SoundData.channels [i].sustain_rate = OrigSoundData.channels [i].sustain_rate;
- SoundData.channels [i].release_rate = OrigSoundData.channels [i].release_rate;
- SoundData.channels [i].sustain_level = OrigSoundData.channels [i].sustain_level;
- SoundData.channels [i].sample = OrigSoundData.channels [i].sample;
- for (j = 0; j < 16; j++)
- SoundData.channels [i].decoded [j] = OrigSoundData.channels [i].decoded [j];
-
- for (j = 0; j < 2; j++)
- SoundData.channels [i].previous [j] = OrigSoundData.channels [i].previous [j];
-
- SoundData.channels [i].sample_number = OrigSoundData.channels [i].sample_number;
- SoundData.channels [i].last_block = OrigSoundData.channels [i].last_block;
- SoundData.channels [i].needs_decode = OrigSoundData.channels [i].needs_decode;
- SoundData.channels [i].block_pointer = OrigSoundData.channels [i].block_pointer;
- SoundData.channels [i].sample_pointer = OrigSoundData.channels [i].sample_pointer;
- SoundData.channels [i].mode = OrigSoundData.channels [i].mode;
- }
-
- S9xSetSoundMute (FALSE);
- IAPU.PC = IAPU.RAM + IAPU.PC;
- S9xAPUUnpackStatus ();
- if (APUCheckDirectPage ())
- IAPU.DirectPage = IAPU.RAM + 0x100;
- else
- IAPU.DirectPage = IAPU.RAM;
- Settings.APUEnabled = TRUE;
- CPU.APU_APUExecuting = TRUE;
- }
- else
- {
- Settings.APUEnabled = FALSE;
- CPU.APU_APUExecuting = FALSE;
- S9xSetSoundMute (TRUE);
- }
- S9xFixSoundAfterSnapshotLoad ();
- ICPU.ShiftedPB = Registers.PB << 16;
- ICPU.ShiftedDB = Registers.DB << 16;
- S9xSetPCBase (ICPU.ShiftedPB + Registers.PC, &CPU);
- S9xUnpackStatus ();
- S9xFixCycles (&Registers, &ICPU);
- S9xReschedule ();
-
- return (SUCCESS);
-}
projects / drnoksnes / blobdiff