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memmap.cpp
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memmap.cpp
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/*
* Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
*
* (c) Copyright 1996 - 2001 Gary Henderson ([email protected]) and
* Jerremy Koot ([email protected])
*
* Super FX C emulator code
* (c) Copyright 1997 - 1999 Ivar ([email protected]) 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 ([email protected]).
*
* 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>
/* Do not reencode this file. There are special chars on it. */
#include "snes9x.h"
#include "memmap.h"
#include "cpuexec.h"
#include "ppu.h"
#include "cheats.h"
#include "apu.h"
#include "sa1.h"
#include "srtc.h"
#include "sdd1.h"
#include "dsp1.h"
#ifndef ZSNES_FX
#include "fxemu.h"
extern struct FxInit_s SuperFX;
#else
START_EXTERN_C
extern uint8 *SFXPlotTable;
END_EXTERN_C
#endif
static uint8 bytes0x2000 [0x2000];
extern char *rom_filename;
extern bool8 LoadZip(const char* , int32 *, int32 *);
bool CMemory::AllASCII (uint8 *b, int size)
{
for (int i = 0; i < size; i++)
{
if (b[i] < 32 || b[i] > 126)
return false;
}
return true;
}
int CMemory::ScoreHiROM (bool skip_header)
{
int score = 0;
int o = skip_header ? 0xff00 + 0x200 : 0xff00;
if ((Memory.ROM [o + 0xdc] + (Memory.ROM [o + 0xdd] << 8) +
Memory.ROM [o + 0xde] + (Memory.ROM [o + 0xdf] << 8)) == 0xffff)
score += 2;
if (Memory.ROM [o + 0xda] == 0x33)
score += 2;
if ((Memory.ROM [o + 0xd5] & 0xf) < 4)
score += 2;
if (!(Memory.ROM [o + 0xfd] & 0x80))
score -= 4;
if (CalculatedSize > 1024 * 1024 * 3)
score += 4;
if ((1 << (Memory.ROM [o + 0xd7] - 7)) > 48)
score -= 1;
if (!AllASCII (&Memory.ROM [o + 0xb0], 6))
score -= 1;
if (!AllASCII (&Memory.ROM [o + 0xc0], ROM_NAME_LEN - 1))
score -= 1;
return (score);
}
int CMemory::ScoreLoROM (bool skip_header)
{
int score = 0;
int o = skip_header ? 0x7f00 + 0x200 : 0x7f00;
if ((Memory.ROM [o + 0xdc] + (Memory.ROM [o + 0xdd] << 8) +
Memory.ROM [o + 0xde] + (Memory.ROM [o + 0xdf] << 8)) == 0xffff)
score += 2;
if (Memory.ROM [o + 0xda] == 0x33)
score += 2;
if ((Memory.ROM [o + 0xd5] & 0xf) < 4)
score += 2;
if (CalculatedSize <= 1024 * 1024 * 16)
score += 2;
if (!(Memory.ROM [o + 0xfd] & 0x80))
score -= 4;
if ((1 << (Memory.ROM [o + 0xd7] - 7)) > 48)
score -= 1;
if (!AllASCII (&Memory.ROM [o + 0xb0], 6))
score -= 1;
if (!AllASCII (&Memory.ROM [o + 0xc0], ROM_NAME_LEN - 1))
score -= 1;
return (score);
}
char *CMemory::Safe (const char *s)
{
static char *safe = NULL;
static int safe_len = 0;
int len = strlen (s);
if (!safe || len + 1 > safe_len)
{
if (safe)
free ((char *) safe);
safe = (char *) malloc (safe_len = len + 1);
}
for (int i = 0; i < len; i++)
{
if (s [i] >= 32 && s [i] < 127)
safe [i] = s[i];
else
safe [i] = '?';
}
safe [len] = 0;
return (safe);
}
/**********************************************************************************************/
/* Init() */
/* This function allocates all the memory needed by the emulator */
/**********************************************************************************************/
bool CMemory::Init ()
{
RAM = (uint8 *) malloc (0x20000);
SRAM = (uint8 *) malloc (0x20000);
VRAM = (uint8 *) malloc (0x10000);
ROM = (uint8 *) malloc (MAX_ROM_SIZE + 0x200 + 0x8000);
FillRAM = NULL;
IPPU.TileCache [TILE_2BIT] = (uint8 *) malloc (MAX_2BIT_TILES * 128);
IPPU.TileCache [TILE_4BIT] = (uint8 *) malloc (MAX_4BIT_TILES * 128);
IPPU.TileCache [TILE_8BIT] = (uint8 *) malloc (MAX_8BIT_TILES * 128);
IPPU.TileCached [TILE_2BIT] = (uint8 *) malloc (MAX_2BIT_TILES);
IPPU.TileCached [TILE_4BIT] = (uint8 *) malloc (MAX_4BIT_TILES);
IPPU.TileCached [TILE_8BIT] = (uint8 *) malloc (MAX_8BIT_TILES);
if (!RAM || !SRAM || !VRAM || !ROM ||
!IPPU.TileCache [TILE_2BIT] || !IPPU.TileCache [TILE_4BIT] ||
!IPPU.TileCache [TILE_8BIT] || !IPPU.TileCached [TILE_2BIT] ||
!IPPU.TileCached [TILE_4BIT] || !IPPU.TileCached [TILE_8BIT])
{
Deinit ();
return false;
}
// FillRAM uses first 32K of ROM image area, otherwise space just
// wasted. Might be read by the SuperFX code.
FillRAM = ROM;
// Add 0x8000 to ROM image pointer to stop SuperFX code accessing
// unallocated memory (can cause crash on some ports).
ROM += 0x8000;
C4RAM = ROM + 0x400000 + 8192 * 8;
::ROM = ROM;
::SRAM = SRAM;
::RegRAM = FillRAM;
#ifdef ZSNES_FX
SFXPlotTable = ROM + 0x400000;
#else
SuperFX.pvRegisters = &Memory.FillRAM [0x3000];
SuperFX.nRamBanks = 1;
SuperFX.pvRam = ::SRAM;
SuperFX.nRomBanks = (2 * 1024 * 1024) / (32 * 1024);
SuperFX.pvRom = (uint8 *) ROM;
#endif
ZeroMemory (IPPU.TileCached [TILE_2BIT], MAX_2BIT_TILES);
ZeroMemory (IPPU.TileCached [TILE_4BIT], MAX_4BIT_TILES);
ZeroMemory (IPPU.TileCached [TILE_8BIT], MAX_8BIT_TILES);
SDD1Data = NULL;
SDD1Index = NULL;
return true;
}
void CMemory::Deinit ()
{
if (RAM)
{
free ((char *) RAM);
RAM = NULL;
}
if (SRAM)
{
free ((char *) SRAM);
SRAM = NULL;
}
if (VRAM)
{
free ((char *) VRAM);
VRAM = NULL;
}
if (ROM)
{
ROM -= 0x8000;
free ((char *) ROM);
ROM = NULL;
}
if (IPPU.TileCache [TILE_2BIT])
{
free ((char *) IPPU.TileCache [TILE_2BIT]);
IPPU.TileCache [TILE_2BIT] = NULL;
}
if (IPPU.TileCache [TILE_4BIT])
{
free ((char *) IPPU.TileCache [TILE_4BIT]);
IPPU.TileCache [TILE_4BIT] = NULL;
}
if (IPPU.TileCache [TILE_8BIT])
{
free ((char *) IPPU.TileCache [TILE_8BIT]);
IPPU.TileCache [TILE_8BIT] = NULL;
}
if (IPPU.TileCached [TILE_2BIT])
{
free ((char *) IPPU.TileCached [TILE_2BIT]);
IPPU.TileCached [TILE_2BIT] = NULL;
}
if (IPPU.TileCached [TILE_4BIT])
{
free ((char *) IPPU.TileCached [TILE_4BIT]);
IPPU.TileCached [TILE_4BIT] = NULL;
}
if (IPPU.TileCached [TILE_8BIT])
{
free ((char *) IPPU.TileCached [TILE_8BIT]);
IPPU.TileCached [TILE_8BIT] = NULL;
}
FreeSDD1Data ();
}
void CMemory::FreeSDD1Data ()
{
if (SDD1Index)
{
free ((char *) SDD1Index);
SDD1Index = NULL;
}
if (SDD1Data)
{
free ((char *) SDD1Data);
SDD1Data = NULL;
}
}
/**********************************************************************************************/
/* checkext() */
/**********************************************************************************************/
int checkzip( char * fn )
{
int cnt = strlen(fn);
if( ( (fn[cnt-1] == 'p') || (fn[cnt-1] == 'P') ) &&
( (fn[cnt-2] == 'i') || (fn[cnt-2] == 'I') ) &&
( (fn[cnt-3] == 'z') || (fn[cnt-3] == 'Z') ) ){
return true;
}
return false;
}
/**********************************************************************************************/
/* LoadROM() */
/* This function loads a Snes-Backup image */
/**********************************************************************************************/
#ifdef _SNESPPC
#pragma warning(disable : 4101)
#pragma warning(disable : 4700)
#endif
bool CMemory::LoadROM (const char *filename)
{
unsigned long FileSize = 0;
int retry_count = 0;
STREAM ROMFile;
bool Interleaved = FALSE;
bool Tales = FALSE;
char dir [_MAX_DIR + 1];
char drive [_MAX_DRIVE + 1];
char name [_MAX_FNAME + 1];
char ext [_MAX_EXT + 1];
char fname [_MAX_PATH + 1];
int i;
memset (&SNESGameFixes, 0, sizeof(SNESGameFixes));
SNESGameFixes.SRAMInitialValue = 0x60;
memset (bytes0x2000, 0, 0x2000);
CPU.TriedInterleavedMode2 = FALSE;
CalculatedSize = 0;
again:
PathSplit(filename, drive, dir, name, ext);
PathMake(fname, drive, dir, name, ext);
int32 TotalFileSize = 0;
#ifdef UNZIP_SUPPORT
if( checkzip( fname ) )
{
if (!LoadZip (fname, &TotalFileSize, &HeaderCount))
return (FALSE);
strcpy (ROMFilename, fname);
}
else
#endif
{
if ((ROMFile = OPEN_STREAM (fname, "rb")) == NULL)
return (FALSE);
strcpy (ROMFilename, fname);
HeaderCount = 0;
uint8 *ptr = ROM;
bool more = FALSE;
do
{
FileSize = READ_STREAM (ptr, MAX_ROM_SIZE + 0x200 - (ptr - ROM), ROMFile);
CLOSE_STREAM (ROMFile);
int calc_size = (FileSize / 0x2000) * 0x2000;
if ((FileSize - calc_size == 512 && !Settings.ForceNoHeader) ||
Settings.ForceHeader)
{
memmove (ptr, ptr + 512, calc_size);
HeaderCount++;
FileSize -= 512;
}
ptr += FileSize;
TotalFileSize += FileSize;
int len;
if (ptr - ROM < MAX_ROM_SIZE + 0x200 &&
(isdigit (ext [0]) && ext [1] == 0 && ext [0] < '9'))
{
more = true;
ext [0]++;
PathMake(fname, drive, dir, name, ext);
}
else
if (ptr - ROM < MAX_ROM_SIZE + 0x200 &&
(((len = strlen (name)) == 7 || len == 8) &&
strncasecmp (name, "sf", 2) == 0 &&
isdigit (name [2]) && isdigit (name [3]) && isdigit (name [4]) &&
isdigit (name [5]) && isalpha (name [len - 1])))
{
more = true;
name [len - 1]++;
PathMake(fname, drive, dir, name, ext);
}
else
more = false;
} while (more && (ROMFile = OPEN_STREAM (fname, "rb")) != NULL);
}
if (HeaderCount == 0)
S9xMessage (S9X_INFO, S9X_HEADERS_INFO, "No ROM file header found.");
else
{
if (HeaderCount == 1)
S9xMessage (S9X_INFO, S9X_HEADERS_INFO,
"Found ROM file header (and ignored it).");
else
S9xMessage (S9X_INFO, S9X_HEADERS_INFO,
"Found multiple ROM file headers (and ignored them).");
}
CheckForIPSPatch (filename, HeaderCount != 0, TotalFileSize);
int orig_hi_score, orig_lo_score;
int hi_score, lo_score;
orig_hi_score = hi_score = ScoreHiROM (FALSE);
orig_lo_score = lo_score = ScoreLoROM (FALSE);
if (HeaderCount == 0 && !Settings.ForceNoHeader &&
((hi_score > lo_score && ScoreHiROM (TRUE) > hi_score) ||
(hi_score <= lo_score && ScoreLoROM (TRUE) > lo_score)))
{
memmove (Memory.ROM, Memory.ROM + 512, TotalFileSize - 512);
TotalFileSize -= 512;
S9xMessage (S9X_INFO, S9X_HEADER_WARNING,
"Try specifying the -nhd command line option if the game doesn't work\n");
}
CalculatedSize = (TotalFileSize / 0x2000) * 0x2000;
ZeroMemory (ROM + CalculatedSize, MAX_ROM_SIZE - CalculatedSize);
// Check for cherryroms.com DAIKAIJYUMONOGATARI2
if (CalculatedSize == 0x500000 &&
strncmp ((const char *)&ROM [0x40ffc0], "DAIKAIJYUMONOGATARI2", 20) == 0 &&
strncmp ((const char *)&ROM [0x40ffb0], "18AE6J", 6) == 0 &&
memcmp (&ROM[0x40ffb0], &ROM [0xffb0], 0x30))
{
memmove (&ROM[0x100000], ROM, 0x500000);
memmove (ROM, &ROM[0x500000], 0x100000);
}
Interleaved = Settings.ForceInterleaved || Settings.ForceInterleaved2;
if (Settings.ForceLoROM || (!Settings.ForceHiROM && lo_score >= hi_score))
{
LoROM = TRUE;
HiROM = FALSE;
// Ignore map type byte if not 0x2x or 0x3x
if ((ROM [0x7fd5] & 0xf0) == 0x20 || (ROM [0x7fd5] & 0xf0) == 0x30)
{
switch (ROM [0x7fd5] & 0xf)
{
case 1:
if (strncmp ((char *) &ROM [0x7fc0], "TREASURE HUNTER G", 17) != 0)
Interleaved = TRUE;
break;
case 2:
#if 0
if (!Settings.ForceLoROM &&
strncmp ((char *) &ROM [0x7fc0], "SUPER FORMATION SOCCE", 21) != 0 &&
strncmp ((char *) &ROM [0x7fc0], "Star Ocean", 10) != 0)
{
LoROM = FALSE;
HiROM = TRUE;
}
#endif
break;
case 5:
Interleaved = TRUE;
Tales = TRUE;
break;
}
}
}
else
{
if ((ROM [0xffd5] & 0xf0) == 0x20 || (ROM [0xffd5] & 0xf0) == 0x30)
{
switch (ROM [0xffd5] & 0xf)
{
case 0:
case 3:
Interleaved = TRUE;
break;
}
}
LoROM = FALSE;
HiROM = TRUE;
}
// More
if (!Settings.ForceHiROM && !Settings.ForceLoROM &&
!Settings.ForceInterleaved && !Settings.ForceInterleaved2 &&
!Settings.ForceNotInterleaved && !Settings.ForcePAL &&
!Settings.ForceSuperFX && !Settings.ForceDSP1 &&
!Settings.ForceSA1 && !Settings.ForceC4 &&
!Settings.ForceSDD1)
{
if (strncmp ((char *) &ROM [0x7fc0], "YUYU NO QUIZ DE GO!GO!", 22) == 0)
{
LoROM = TRUE;
HiROM = FALSE;
Interleaved = FALSE;
}
else
if (strncmp ((char *) &ROM [0x7fc0], "SP MOMOTAROU DENTETSU2", 22) == 0)
{
LoROM = TRUE;
HiROM = FALSE;
Interleaved = FALSE;
}
else
if (CalculatedSize == 0x100000 &&
strncmp ((char *) &ROM [0xffc0], "WWF SUPER WRESTLEMANIA", 22) == 0)
{
int cvcount;
memmove (&ROM[0x100000] , ROM, 0x100000);
for (cvcount = 0; cvcount < 16; cvcount++)
{
memmove (&ROM[0x8000 * cvcount], &ROM[0x10000 * cvcount + 0x100000 + 0x8000], 0x8000);
memmove (&ROM[0x8000 * cvcount + 0x80000], &ROM[0x10000 * cvcount + 0x100000], 0x8000);
}
LoROM = TRUE;
HiROM = FALSE;
ZeroMemory (ROM + CalculatedSize, MAX_ROM_SIZE - CalculatedSize);
}
}
if (!Settings.ForceNotInterleaved && Interleaved)
{
CPU.TriedInterleavedMode2 = TRUE;
S9xMessage (S9X_INFO, S9X_ROM_INTERLEAVED_INFO,
"ROM image is in interleaved format - converting...");
int nblocks = CalculatedSize >> 16;
#if 0
int step = 64;
while (nblocks <= step)
step >>= 1;
nblocks = step;
#endif
uint8 blocks [256];
if (Tales)
{
nblocks = 0x60;
for (i = 0; i < 0x40; i += 2)
{
blocks [i + 0] = (i >> 1) + 0x20;
blocks [i + 1] = (i >> 1) + 0x00;
}
for (i = 0; i < 0x80; i += 2)
{
blocks [i + 0x40] = (i >> 1) + 0x80;
blocks [i + 0x41] = (i >> 1) + 0x40;
}
LoROM = FALSE;
HiROM = TRUE;
}
else
if (Settings.ForceInterleaved2)
{
for (i = 0; i < nblocks * 2; i++)
{
blocks [i] = (i & ~0x1e) | ((i & 2) << 2) | ((i & 4) << 2) |
((i & 8) >> 2) | ((i & 16) >> 2);
}
}
else
{
bool8 t = LoROM;
LoROM = HiROM;
HiROM = t;
for (i = 0; i < nblocks; i++)
{
blocks [i * 2] = i + nblocks;
blocks [i * 2 + 1] = i;
}
}
uint8 *tmp = (uint8 *) malloc (0x8000);
if (tmp)
{
for (i = 0; i < nblocks * 2; i++)
{
for (int j = i; j < nblocks * 2; j++)
{
if (blocks [j] == i)
{
memmove (tmp, &ROM [blocks [j] * 0x8000], 0x8000);
memmove (&ROM [blocks [j] * 0x8000],
&ROM [blocks [i] * 0x8000], 0x8000);
memmove (&ROM [blocks [i] * 0x8000], tmp, 0x8000);
uint8 b = blocks [j];
blocks [j] = blocks [i];
blocks [i] = b;
break;
}
}
}
free ((char *) tmp);
}
hi_score = ScoreHiROM (FALSE);
lo_score = ScoreLoROM (FALSE);
if ((HiROM &&
(lo_score >= hi_score || hi_score < 0)) ||
(LoROM &&
(hi_score > lo_score || lo_score < 0)))
{
if (retry_count == 0)
{
S9xMessage (S9X_INFO, S9X_ROM_CONFUSING_FORMAT_INFO,
"ROM lied about its type! Trying again.");
Settings.ForceNotInterleaved = TRUE;
Settings.ForceInterleaved = FALSE;
retry_count++;
goto again;
}
}
}
FreeSDD1Data ();
InitROM (Tales);
S9xLoadCheatFile (S9xGetFilename(FILE_CHT));
S9xInitCheatData ();
S9xApplyCheats ();
S9xReset ();
return true;
}
void S9xDeinterleaveMode2 ()
{
S9xMessage (S9X_INFO, S9X_ROM_INTERLEAVED_INFO,
"ROM image is in interleaved format - converting...");
int nblocks = Memory.CalculatedSize >> 15;
int step = 64;
while (nblocks <= step)
step >>= 1;
nblocks = step;
uint8 blocks [256];
int i;
for (i = 0; i < nblocks * 2; i++)
{
blocks [i] = (i & ~0x1e) | ((i & 2) << 2) | ((i & 4) << 2) |
((i & 8) >> 2) | ((i & 16) >> 2);
}
uint8 *tmp = (uint8 *) malloc (0x8000);
if (tmp)
{
for (i = 0; i < nblocks * 2; i++)
{
for (int j = i; j < nblocks * 2; j++)
{
if (blocks [j] == i)
{
memmove (tmp, &Memory.ROM [blocks [j] * 0x8000], 0x8000);
memmove (&Memory.ROM [blocks [j] * 0x8000],
&Memory.ROM [blocks [i] * 0x8000], 0x8000);
memmove (&Memory.ROM [blocks [i] * 0x8000], tmp, 0x8000);
uint8 b = blocks [j];
blocks [j] = blocks [i];
blocks [i] = b;
break;
}
}
}
free ((char *) tmp);
}
Memory.InitROM (false);
S9xReset ();
}
void CMemory::InitROM (bool Interleaved)
{
#ifndef ZSNES_FX
SuperFX.nRomBanks = CalculatedSize >> 15;
#endif
Settings.MultiPlayer5Master = Settings.MultiPlayer5;
Settings.MouseMaster = Settings.Mouse;
Settings.SuperScopeMaster = Settings.SuperScope;
Settings.DSP1Master = Settings.ForceDSP1;
Settings.SuperFX = FALSE;
Settings.SA1 = FALSE;
Settings.C4 = FALSE;
Settings.SDD1 = FALSE;
Settings.SRTC = FALSE;
ZeroMemory (BlockIsRAM, MEMMAP_NUM_BLOCKS);
ZeroMemory (BlockIsROM, MEMMAP_NUM_BLOCKS);
::SRAM = SRAM;
memset (ROMId, 0, 5);
memset (CompanyId, 0, 3);
if (Memory.HiROM)
{
Memory.SRAMSize = ROM [0xffd8];
strncpy (ROMName, (char *) &ROM[0xffc0], ROM_NAME_LEN - 1);
ROMSpeed = ROM [0xffd5];
ROMType = ROM [0xffd6];
ROMSize = ROM [0xffd7];
ROMChecksum = ROM [0xffde] + (ROM [0xffdf] << 8);
ROMComplementChecksum = ROM [0xffdc] + (ROM [0xffdd] << 8);
memmove (ROMId, &ROM [0xffb2], 4);
memmove (CompanyId, &ROM [0xffb0], 2);
// Try to auto-detect the DSP1 chip
if (!Settings.ForceNoDSP1 &&
(ROMType & 0xf) >= 3 && (ROMType & 0xf0) == 0)
Settings.DSP1Master = TRUE;
Settings.SDD1 = Settings.ForceSDD1;
if ((ROMType & 0xf0) == 0x40)
Settings.SDD1 = !Settings.ForceNoSDD1;
if (Settings.BS)
BSHiROMMap ();
else
if ((ROMSpeed & ~0x10) == 0x25)
TalesROMMap (Interleaved);
else
if ((ROMSpeed & ~0x10) == 0x22 &&
strncmp (ROMName, "Super Street Fighter", 20) != 0)
{
AlphaROMMap ();
}
else
HiROMMap ();
}
else
{
Memory.HiROM = FALSE;
Memory.SRAMSize = ROM [0x7fd8];
ROMSpeed = ROM [0x7fd5];
ROMType = ROM [0x7fd6];
ROMSize = ROM [0x7fd7];
ROMChecksum = ROM [0x7fde] + (ROM [0x7fdf] << 8);
ROMComplementChecksum = ROM [0x7fdc] + (ROM [0x7fdd] << 8);
memmove (ROMId, &ROM [0x7fb2], 4);
memmove (CompanyId, &ROM [0x7fb0], 2);
strncpy (ROMName, (char *) &ROM[0x7fc0], ROM_NAME_LEN - 1);
Settings.SuperFX = Settings.ForceSuperFX;
if ((ROMType & 0xf0) == 0x10)
Settings.SuperFX = !Settings.ForceNoSuperFX;
// Try to auto-detect the DSP1 chip
if (!Settings.ForceNoDSP1 &&
(ROMType & 0xf) >= 3 && (ROMType & 0xf0) == 0)
Settings.DSP1Master = TRUE;
Settings.SDD1 = Settings.ForceSDD1;
if ((ROMType & 0xf0) == 0x40)
Settings.SDD1 = !Settings.ForceNoSDD1;
if (Settings.SDD1)
S9xLoadSDD1Data ();
Settings.C4 = Settings.ForceC4;
if ((ROMType & 0xf0) == 0xf0 &&
(strncmp (ROMName, "MEGAMAN X", 9) == 0 ||
strncmp (ROMName, "ROCKMAN X", 9) == 0))
{
Settings.C4 = !Settings.ForceNoC4;
}
if (Settings.SuperFX)
{
//::SRAM = ROM + 1024 * 1024 * 4;
SuperFXROMMap ();
Settings.MultiPlayer5Master = FALSE;
//Settings.MouseMaster = FALSE;
//Settings.SuperScopeMaster = FALSE;
Settings.DSP1Master = FALSE;
Settings.SA1 = FALSE;
Settings.C4 = FALSE;
Settings.SDD1 = FALSE;
}
else
if (Settings.ForceSA1 ||
(!Settings.ForceNoSA1 && (ROMSpeed & ~0x10) == 0x23 &&
(ROMType & 0xf) > 3 && (ROMType & 0xf0) == 0x30))
{
Settings.SA1 = TRUE;
Settings.MultiPlayer5Master = FALSE;
//Settings.MouseMaster = FALSE;
//Settings.SuperScopeMaster = FALSE;
Settings.DSP1Master = FALSE;
Settings.C4 = FALSE;
Settings.SDD1 = FALSE;
SA1ROMMap ();
}
else
if ((ROMSpeed & ~0x10) == 0x25)
TalesROMMap (Interleaved);
else
if (strncmp ((char *) &Memory.ROM [0x7fc0], "SOUND NOVEL-TCOOL", 17) == 0 ||
strncmp ((char *) &Memory.ROM [0x7fc0], "DERBY STALLION 96", 17) == 0)
{
LoROM24MBSMap ();
Settings.DSP1Master = FALSE;
}
else
if (strncmp ((char *) &Memory.ROM [0x7fc0], "THOROUGHBRED BREEDER3", 21) == 0 ||
strncmp ((char *) &Memory.ROM [0x7fc0], "RPG-TCOOL 2", 11) == 0)
{
SRAM512KLoROMMap ();
Settings.DSP1Master = FALSE;
}
else
if (strncmp ((char *) &Memory.ROM [0x7fc0], "DEZAEMON ", 10) == 0)
{
Settings.DSP1Master = FALSE;
SRAM1024KLoROMMap ();
}
else
if (strncmp ((char *) &Memory.ROM [0x7fc0], "ADD-ON BASE CASSETE", 19) == 0)
{
Settings.MultiPlayer5Master = FALSE;
Settings.MouseMaster = FALSE;
Settings.SuperScopeMaster = FALSE;
Settings.DSP1Master = FALSE;
SufamiTurboLoROMMap();
Memory.SRAMSize = 3;
}
else
if ((ROMSpeed & ~0x10) == 0x22 &&
strncmp (ROMName, "Super Street Fighter", 20) != 0)
{
AlphaROMMap ();
}
else
LoROMMap ();
}
int power2 = 0;
int size = CalculatedSize;
while (size >>= 1)
power2++;
size = 1 << power2;
uint32 remainder = CalculatedSize - size;
uint32 sum1 = 0;
uint32 sum2 = 0;
int i;
for (i = 0; i < size; i++)
sum1 += ROM [i];
for (i = 0; i < (int) remainder; i++)
sum2 += ROM [size + i];
if (remainder)
{
//for Tengai makyou
if (CalculatedSize == 0x500000 && Memory.HiROM &&
strncmp ((const char *)&ROM[0xffb0], "18AZ", 4) == 0 &&
!memcmp(&ROM[0xffd5], "\x3a\xf9\x0d\x03\x00\x33\x00", 7))
sum1 += sum2;
else
sum1 += sum2 * (size / remainder);
}
sum1 &= 0xffff;
if (Settings.ForceNTSC)
Settings.PAL = FALSE;
else
if (Settings.ForcePAL)
Settings.PAL = TRUE;
else
if (Memory.HiROM)
// Country code
Settings.PAL = ROM [0xffd9] >= 2;
else
Settings.PAL = ROM [0x7fd9] >= 2;
if (Settings.PAL)
{
Settings.FrameTime = Settings.FrameTimePAL;
Memory.ROMFramesPerSecond = 50;
}
else
{
Settings.FrameTime = Settings.FrameTimeNTSC;
Memory.ROMFramesPerSecond = 60;
}
ROMName[ROM_NAME_LEN - 1] = 0;
if (strlen (ROMName))
{
char *p = ROMName + strlen (ROMName) - 1;
while (p > ROMName && *(p - 1) == ' ')
p--;
*p = 0;
}
if (Settings.SuperFX)
{
CPU.Memory_SRAMMask = 0xffff;
Memory.SRAMSize = 16;
}
else
{
CPU.Memory_SRAMMask = Memory.SRAMSize ?
((1 << (Memory.SRAMSize + 3)) * 128) - 1 : 0;
}
IAPU.OneCycle = ONE_APU_CYCLE;
Settings.Shutdown = Settings.ShutdownMaster;
SetDSP = &DSP1SetByte;
GetDSP = &DSP1GetByte;
ApplyROMFixes ();
sprintf (ROMName, "%s", Safe (ROMName));
sprintf (ROMId, "%s", Safe (ROMId));
sprintf (CompanyId, "%s", Safe (CompanyId));
sprintf (String, "\"%s\" [%s] %s, %s, Type: %s, Mode: %s, TV: %s, S-RAM: %s, ROMId: %s Company: %2.2s",
ROMName,
(ROMChecksum + ROMComplementChecksum != 0xffff ||
ROMChecksum != sum1) ? "bad checksum" : "checksum ok",
MapType (),
Size (),
KartContents (),
MapMode (),
TVStandard (),
StaticRAMSize (),
ROMId,
CompanyId);
S9xMessage (S9X_INFO, S9X_ROM_INFO, String);
}
bool CMemory::LoadSRAM (const char *filename)
{
int size = Memory.SRAMSize ?
(1 << (Memory.SRAMSize + 3)) * 128 : 0;
memset (SRAM, SNESGameFixes.SRAMInitialValue, 0x20000);
if (size > 0x20000)
size = 0x20000;
if (size)
{
FILE *file;
if ((file = fopen(filename, "rb")))
{
int len = fread ((char*) ::SRAM, 1, 0x20000, file);
fclose (file);
if (len - size == 512)
{
// S-RAM file has a header - remove it
memmove (::SRAM, ::SRAM + 512, size);
}
if (len == size + SRTC_SRAM_PAD)
{
S9xSRTCPostLoadState ();
S9xResetSRTC ();
rtc.index = -1;
rtc.mode = MODE_READ;
}
else
S9xHardResetSRTC ();
return true;
}
S9xHardResetSRTC ();
return false;
}
if (Settings.SDD1)