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snes9x/memmap.cpp

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/*****************************************************************************\
Snes9x - Portable Super Nintendo Entertainment System (TM) emulator.
This file is licensed under the Snes9x License.
For further information, consult the LICENSE file in the root directory.
\*****************************************************************************/
#include <string>
#include <numeric>
#include <assert.h>
#ifdef UNZIP_SUPPORT
# ifdef SYSTEM_ZIP
# include <minizip/unzip.h>
# else
# include "unzip/unzip.h"
# endif
#endif
#ifdef JMA_SUPPORT
#include "jma/s9x-jma.h"
#endif
#include <ctype.h>
#include <sys/stat.h>
#include "snes9x.h"
#include "memmap.h"
#include "apu/apu.h"
#include "fxemu.h"
#include "sdd1.h"
#include "srtc.h"
#include "controls.h"
#include "cheats.h"
#include "movie.h"
#include "display.h"
#include "sha256.h"
#include "snapshot.h"
#ifndef SET_UI_COLOR
#define SET_UI_COLOR(r, g, b) ;
#endif
#ifndef max
#define max(a, b) (((a) > (b)) ? (a) : (b))
#endif
#ifndef min
#define min(a, b) (((a) < (b)) ? (a) : (b))
#endif
static bool8 stopMovie = TRUE;
// from NSRT
static const char *nintendo_licensees[] =
{
"Unlicensed",
"Nintendo",
"Rocket Games/Ajinomoto",
"Imagineer-Zoom",
"Gray Matter",
"Zamuse",
"Falcom",
NULL,
"Capcom",
"Hot B Co.",
"Jaleco",
"Coconuts Japan",
"Coconuts Japan/G.X.Media",
"Micronet",
"Technos",
"Mebio Software",
"Shouei System",
"Starfish",
NULL,
"Mitsui Fudosan/Dentsu",
NULL,
"Warashi Inc.",
NULL,
"Nowpro",
NULL,
"Game Village",
"IE Institute",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Banarex",
"Starfish",
"Infocom",
"Electronic Arts Japan",
NULL,
"Cobra Team",
"Human/Field",
"KOEI",
"Hudson Soft",
"S.C.P./Game Village",
"Yanoman",
NULL,
"Tecmo Products",
"Japan Glary Business",
"Forum/OpenSystem",
"Virgin Games (Japan)",
"SMDE",
"Yojigen",
NULL,
"Daikokudenki",
NULL,
NULL,
NULL,
NULL,
NULL,
"Creatures Inc.",
"TDK Deep Impresion",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Destination Software/KSS",
"Sunsoft/Tokai Engineering",
"POW (Planning Office Wada)/VR 1 Japan",
"Micro World",
NULL,
"San-X",
"Enix",
"Loriciel/Electro Brain",
"Kemco Japan",
"Seta Co.,Ltd.",
"Culture Brain",
"Irem Corp.",
"Palsoft",
"Visit Co., Ltd.",
"Intec",
"System Sacom",
"Poppo",
"Ubisoft Japan",
NULL,
"Media Works",
"NEC InterChannel",
"Tam",
"Gajin/Jordan",
"Smilesoft",
NULL,
NULL,
"Mediakite",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Viacom",
"Carrozzeria",
"Dynamic",
NULL,
"Magifact",
"Hect",
"Codemasters",
"Taito/GAGA Communications",
"Laguna",
"Telstar Fun & Games/Event/Taito",
NULL,
"Arcade Zone Ltd.",
"Entertainment International/Empire Software",
"Loriciel",
"Gremlin Graphics",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Seika Corp.",
"UBI SOFT Entertainment Software",
"Sunsoft US",
NULL,
"Life Fitness",
NULL,
"System 3",
"Spectrum Holobyte",
NULL,
"Irem",
NULL,
"Raya Systems",
"Renovation Products",
"Malibu Games",
NULL,
"Eidos/U.S. Gold",
"Playmates Interactive",
NULL,
NULL,
"Fox Interactive",
"Time Warner Interactive",
NULL,
NULL,
NULL,
NULL,
NULL,
"Disney Interactive",
NULL,
"Black Pearl",
NULL,
"Advanced Productions",
NULL,
NULL,
"GT Interactive",
"RARE",
"Crave Entertainment",
"Absolute Entertainment",
"Acclaim",
"Activision",
"American Sammy",
"Take 2/GameTek",
"Hi Tech",
"LJN Ltd.",
NULL,
"Mattel",
NULL,
"Mindscape/Red Orb Entertainment",
"Romstar",
"Taxan",
"Midway/Tradewest",
NULL,
"American Softworks Corp.",
"Majesco Sales Inc.",
"3DO",
NULL,
NULL,
"Hasbro",
"NewKidCo",
"Telegames",
"Metro3D",
NULL,
"Vatical Entertainment",
"LEGO Media",
NULL,
"Xicat Interactive",
"Cryo Interactive",
NULL,
NULL,
"Red Storm Entertainment",
"Microids",
NULL,
"Conspiracy/Swing",
"Titus",
"Virgin Interactive",
"Maxis",
NULL,
"LucasArts Entertainment",
NULL,
NULL,
"Ocean",
NULL,
"Electronic Arts",
NULL,
"Laser Beam",
NULL,
NULL,
"Elite Systems",
"Electro Brain",
"The Learning Company",
"BBC",
NULL,
"Software 2000",
NULL,
"BAM! Entertainment",
"Studio 3",
NULL,
NULL,
NULL,
"Classified Games",
NULL,
"TDK Mediactive",
NULL,
"DreamCatcher",
"JoWood Produtions",
"SEGA",
"Wannado Edition",
"LSP (Light & Shadow Prod.)",
"ITE Media",
"Infogrames",
"Interplay",
"JVC (US)",
"Parker Brothers",
NULL,
"SCI (Sales Curve Interactive)/Storm",
NULL,
NULL,
"THQ Software",
"Accolade Inc.",
"Triffix Entertainment",
NULL,
"Microprose Software",
"Universal Interactive/Sierra/Simon & Schuster",
NULL,
"Kemco",
"Rage Software",
"Encore",
NULL,
"Zoo",
"Kiddinx",
"Simon & Schuster Interactive",
"Asmik Ace Entertainment Inc./AIA",
"Empire Interactive",
NULL,
NULL,
"Jester Interactive",
NULL,
"Rockstar Games",
"Scholastic",
"Ignition Entertainment",
"Summitsoft",
"Stadlbauer",
NULL,
NULL,
NULL,
"Misawa",
"Teichiku",
"Namco Ltd.",
"LOZC",
"KOEI",
NULL,
"Tokuma Shoten Intermedia",
"Tsukuda Original",
"DATAM-Polystar",
NULL,
NULL,
"Bullet-Proof Software",
"Vic Tokai Inc.",
NULL,
"Character Soft",
"I'Max",
"Saurus",
NULL,
NULL,
"General Entertainment",
NULL,
NULL,
"I'Max",
"Success",
NULL,
"SEGA Japan",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Takara",
"Chun Soft",
"Video System Co., Ltd./McO'River",
"BEC",
NULL,
"Varie",
"Yonezawa/S'pal",
"Kaneko",
NULL,
"Victor Interactive Software/Pack-in-Video",
"Nichibutsu/Nihon Bussan",
"Tecmo",
"Imagineer",
NULL,
NULL,
"Nova",
"Den'Z",
"Bottom Up",
NULL,
"TGL (Technical Group Laboratory)",
NULL,
"Hasbro Japan",
NULL,
"Marvelous Entertainment",
NULL,
"Keynet Inc.",
"Hands-On Entertainment",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Telenet",
"Hori",
NULL,
NULL,
"Konami",
"K.Amusement Leasing Co.",
"Kawada",
"Takara",
NULL,
"Technos Japan Corp.",
"JVC (Europe/Japan)/Victor Musical Industries",
NULL,
"Toei Animation",
"Toho",
NULL,
"Namco",
"Media Rings Corp.",
"J-Wing",
NULL,
"Pioneer LDC",
"KID",
"Mediafactory",
NULL,
NULL,
NULL,
"Infogrames Hudson",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Acclaim Japan",
"ASCII Co./Nexoft",
"Bandai",
NULL,
"Enix",
NULL,
"HAL Laboratory/Halken",
"SNK",
NULL,
"Pony Canyon Hanbai",
"Culture Brain",
"Sunsoft",
"Toshiba EMI",
"Sony Imagesoft",
NULL,
"Sammy",
"Magical",
"Visco",
NULL,
"Compile",
NULL,
"MTO Inc.",
NULL,
"Sunrise Interactive",
NULL,
"Global A Entertainment",
"Fuuki",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Taito",
NULL,
"Kemco",
"Square",
"Tokuma Shoten",
"Data East",
"Tonkin House",
NULL,
"KOEI",
NULL,
"Konami/Ultra/Palcom",
"NTVIC/VAP",
"Use Co., Ltd.",
"Meldac",
"Pony Canyon (Japan)/FCI (US)",
"Angel/Sotsu Agency/Sunrise",
"Yumedia/Aroma Co., Ltd.",
NULL,
NULL,
"Boss",
"Axela/Crea-Tech",
"Sekaibunka-Sha/Sumire kobo/Marigul Management Inc.",
"Konami Computer Entertainment Osaka",
NULL,
NULL,
"Enterbrain",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Taito/Disco",
"Sofel",
"Quest Corp.",
"Sigma",
"Ask Kodansha",
NULL,
"Naxat",
"Copya System",
"Capcom Co., Ltd.",
"Banpresto",
"TOMY",
"Acclaim/LJN Japan",
NULL,
"NCS",
"Human Entertainment",
"Altron",
"Jaleco",
"Gaps Inc.",
NULL,
NULL,
NULL,
NULL,
NULL,
"Elf",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Jaleco",
NULL,
"Yutaka",
"Varie",
"T&ESoft",
"Epoch Co., Ltd.",
NULL,
"Athena",
"Asmik",
"Natsume",
"King Records",
"Atlus",
"Epic/Sony Records (Japan)",
NULL,
"IGS (Information Global Service)",
NULL,
"Chatnoir",
"Right Stuff",
NULL,
"NTT COMWARE",
NULL,
"Spike",
"Konami Computer Entertainment Tokyo",
"Alphadream Corp.",
NULL,
"Sting",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"A Wave",
"Motown Software",
"Left Field Entertainment",
"Extreme Entertainment Group",
"TecMagik",
NULL,
NULL,
NULL,
NULL,
"Cybersoft",
NULL,
"Psygnosis",
NULL,
NULL,
"Davidson/Western Tech.",
"Unlicensed",
NULL,
NULL,
NULL,
NULL,
"The Game Factory Europe",
"Hip Games",
"Aspyr",
NULL,
NULL,
"Mastiff",
"iQue",
"Digital Tainment Pool",
"XS Games",
"Daiwon",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"PCCW Japan",
NULL,
NULL,
"KiKi Co. Ltd.",
"Open Sesame Inc.",
"Sims",
"Broccoli",
"Avex",
"D3 Publisher",
NULL,
"Konami Computer Entertainment Japan",
NULL,
"Square-Enix",
"KSG",
"Micott & Basara Inc.",
NULL,
"Orbital Media",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"The Game Factory USA",
NULL,
NULL,
"Treasure",
"Aruze",
"Ertain",
"SNK Playmore",
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
"Yojigen"
};
static const uint32 crc32Table[256] =
{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
static void S9xDeinterleaveType1 (int, uint8 *);
static void S9xDeinterleaveType2 (int, uint8 *);
static void S9xDeinterleaveGD24 (int, uint8 *);
static bool8 allASCII (uint8 *, int);
static bool8 is_SufamiTurbo_BIOS (const uint8 *, uint32);
static bool8 is_SufamiTurbo_Cart (const uint8 *, uint32);
static bool8 is_BSCart_BIOS (const uint8 *, uint32);
static bool8 is_BSCartSA1_BIOS(const uint8 *, uint32);
static bool8 is_GNEXT_Add_On (const uint8 *, uint32);
static uint32 caCRC32 (uint8 *, uint32, uint32 crc32 = 0xffffffff);
static bool8 ReadUPSPatch (Stream *, long, int32 &);
static long ReadInt (Stream *, unsigned);
static bool8 ReadIPSPatch (Stream *, long, int32 &);
#ifdef UNZIP_SUPPORT
static int unzFindExtension (unzFile &, const char *, bool restart = TRUE, bool print = TRUE, bool allowExact = FALSE);
#endif
// deinterleave
static void S9xDeinterleaveType1 (int size, uint8 *base)
{
Settings.DisplayColor = BUILD_PIXEL(0, 31, 0);
SET_UI_COLOR(0, 255, 0);
uint8 blocks[256];
int nblocks = size >> 16;
for (int i = 0; i < nblocks; i++)
{
blocks[i * 2] = i + nblocks;
blocks[i * 2 + 1] = i;
}
uint8 *tmp = (uint8 *) malloc(0x8000);
if (tmp)
{
for (int i = 0; i < nblocks * 2; i++)
{
for (int j = i; j < nblocks * 2; j++)
{
if (blocks[j] == i)
{
memmove(tmp, &base[blocks[j] * 0x8000], 0x8000);
memmove(&base[blocks[j] * 0x8000], &base[blocks[i] * 0x8000], 0x8000);
memmove(&base[blocks[i] * 0x8000], tmp, 0x8000);
uint8 b = blocks[j];
blocks[j] = blocks[i];
blocks[i] = b;
break;
}
}
}
free(tmp);
}
}
static void S9xDeinterleaveType2 (int size, uint8 *base)
{
// for odd Super FX images
Settings.DisplayColor = BUILD_PIXEL(31, 14, 6);
SET_UI_COLOR(255, 119, 25);
uint8 blocks[256];
int nblocks = size >> 16;
int step = 64;
while (nblocks <= step)
step >>= 1;
nblocks = step;
for (int i = 0; i < nblocks * 2; i++)
blocks[i] = (i & ~0xf) | ((i & 3) << 2) | ((i & 12) >> 2);
uint8 *tmp = (uint8 *) malloc(0x10000);
if (tmp)
{
for (int i = 0; i < nblocks * 2; i++)
{
for (int j = i; j < nblocks * 2; j++)
{
if (blocks[j] == i)
{
memmove(tmp, &base[blocks[j] * 0x10000], 0x10000);
memmove(&base[blocks[j] * 0x10000], &base[blocks[i] * 0x10000], 0x10000);
memmove(&base[blocks[i] * 0x10000], tmp, 0x10000);
uint8 b = blocks[j];
blocks[j] = blocks[i];
blocks[i] = b;
break;
}
}
}
free(tmp);
}
}
static void S9xDeinterleaveGD24 (int size, uint8 *base)
{
// for 24Mb images dumped with Game Doctor
if (size != 0x300000)
return;
Settings.DisplayColor = BUILD_PIXEL(0, 31, 31);
SET_UI_COLOR(0, 255, 255);
uint8 *tmp = (uint8 *) malloc(0x80000);
if (tmp)
{
memmove(tmp, &base[0x180000], 0x80000);
memmove(&base[0x180000], &base[0x200000], 0x80000);
memmove(&base[0x200000], &base[0x280000], 0x80000);
memmove(&base[0x280000], tmp, 0x80000);
free(tmp);
S9xDeinterleaveType1(size, base);
}
}
// allocation and deallocation
bool8 CMemory::Init (void)
{
IPPU.TileCache[TILE_2BIT] = (uint8 *) malloc(MAX_2BIT_TILES * 64);
IPPU.TileCache[TILE_4BIT] = (uint8 *) malloc(MAX_4BIT_TILES * 64);
IPPU.TileCache[TILE_8BIT] = (uint8 *) malloc(MAX_8BIT_TILES * 64);
IPPU.TileCache[TILE_2BIT_EVEN] = (uint8 *) malloc(MAX_2BIT_TILES * 64);
IPPU.TileCache[TILE_2BIT_ODD] = (uint8 *) malloc(MAX_2BIT_TILES * 64);
IPPU.TileCache[TILE_4BIT_EVEN] = (uint8 *) malloc(MAX_4BIT_TILES * 64);
IPPU.TileCache[TILE_4BIT_ODD] = (uint8 *) malloc(MAX_4BIT_TILES * 64);
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);
IPPU.TileCached[TILE_2BIT_EVEN] = (uint8 *) malloc(MAX_2BIT_TILES);
IPPU.TileCached[TILE_2BIT_ODD] = (uint8 *) malloc(MAX_2BIT_TILES);
IPPU.TileCached[TILE_4BIT_EVEN] = (uint8 *) malloc(MAX_4BIT_TILES);
IPPU.TileCached[TILE_4BIT_ODD] = (uint8 *) malloc(MAX_4BIT_TILES);
if (!IPPU.TileCache[TILE_2BIT] ||
!IPPU.TileCache[TILE_4BIT] ||
!IPPU.TileCache[TILE_8BIT] ||
!IPPU.TileCache[TILE_2BIT_EVEN] ||
!IPPU.TileCache[TILE_2BIT_ODD] ||
!IPPU.TileCache[TILE_4BIT_EVEN] ||
!IPPU.TileCache[TILE_4BIT_ODD] ||
!IPPU.TileCached[TILE_2BIT] ||
!IPPU.TileCached[TILE_4BIT] ||
!IPPU.TileCached[TILE_8BIT] ||
!IPPU.TileCached[TILE_2BIT_EVEN] ||
!IPPU.TileCached[TILE_2BIT_ODD] ||
!IPPU.TileCached[TILE_4BIT_EVEN] ||
!IPPU.TileCached[TILE_4BIT_ODD])
{
Deinit();
return (FALSE);
}
ROMStorage.resize(MAX_ROM_SIZE + 0x200 + 0x8000);
std::fill(ROMStorage.begin(), ROMStorage.end(), 0);
SRAMStorage.resize(0x80000);
std::fill(SRAMStorage.begin(), SRAMStorage.end(), 0);
SRAM = &SRAMStorage[0];
memset(RAM, 0, sizeof(RAM));
memset(VRAM, 0, sizeof(VRAM));
memset(IPPU.TileCache[TILE_2BIT], 0, MAX_2BIT_TILES * 64);
memset(IPPU.TileCache[TILE_4BIT], 0, MAX_4BIT_TILES * 64);
memset(IPPU.TileCache[TILE_8BIT], 0, MAX_8BIT_TILES * 64);
memset(IPPU.TileCache[TILE_2BIT_EVEN], 0, MAX_2BIT_TILES * 64);
memset(IPPU.TileCache[TILE_2BIT_ODD], 0, MAX_2BIT_TILES * 64);
memset(IPPU.TileCache[TILE_4BIT_EVEN], 0, MAX_4BIT_TILES * 64);
memset(IPPU.TileCache[TILE_4BIT_ODD], 0, MAX_4BIT_TILES * 64);
memset(IPPU.TileCached[TILE_2BIT], 0, MAX_2BIT_TILES);
memset(IPPU.TileCached[TILE_4BIT], 0, MAX_4BIT_TILES);
memset(IPPU.TileCached[TILE_8BIT], 0, MAX_8BIT_TILES);
memset(IPPU.TileCached[TILE_2BIT_EVEN], 0, MAX_2BIT_TILES);
memset(IPPU.TileCached[TILE_2BIT_ODD], 0, MAX_2BIT_TILES);
memset(IPPU.TileCached[TILE_4BIT_EVEN], 0, MAX_4BIT_TILES);
memset(IPPU.TileCached[TILE_4BIT_ODD], 0, MAX_4BIT_TILES);
// FillRAM uses first 32K of ROM image area, otherwise space just
// wasted. Might be read by the SuperFX code.
FillRAM = &ROMStorage[0];
// Add 0x8000 to ROM image pointer to stop SuperFX code accessing
// unallocated memory (can cause crash on some ports).
ROM = &ROMStorage[0x8000];
C4RAM = ROM + 0x400000 + 8192 * 8; // C4
OBC1RAM = ROM + 0x400000; // OBC1
BIOSROM = ROM + 0x300000; // BS
BSRAM = ROM + 0x400000; // BS
SuperFX.pvRegisters = FillRAM + 0x3000;
SuperFX.nRamBanks = 2; // Most only use 1. 1=64KB=512Mb, 2=128KB=1024Mb
SuperFX.pvRam = SRAM;
SuperFX.nRomBanks = (2 * 1024 * 1024) / (32 * 1024);
SuperFX.pvRom = (uint8 *) ROM;
PostRomInitFunc = NULL;
return (TRUE);
}
void CMemory::Deinit (void)
{
ROM = NULL;
for (int t = 0; t < 7; t++)
{
if (IPPU.TileCache[t])
{
free(IPPU.TileCache[t]);
IPPU.TileCache[t] = NULL;
}
if (IPPU.TileCached[t])
{
free(IPPU.TileCached[t]);
IPPU.TileCached[t] = NULL;
}
}
}
// file management and ROM detection
static bool8 allASCII (uint8 *b, int size)
{
for (int i = 0; i < size; i++)
{
if (b[i] < 32 || b[i] > 126)
return (FALSE);
}
return (TRUE);
}
static bool8 is_SufamiTurbo_BIOS (const uint8 *data, uint32 size)
{
if (size == 0x40000 &&
strncmp((char *) data, "BANDAI SFC-ADX", 14) == 0 && strncmp((char * ) (data + 0x10), "SFC-ADX BACKUP", 14) == 0)
return (TRUE);
else
return (FALSE);
}
static bool8 is_SufamiTurbo_Cart (const uint8 *data, uint32 size)
{
if (size >= 0x80000 && size <= 0x100000 &&
strncmp((char *) data, "BANDAI SFC-ADX", 14) == 0 && strncmp((char * ) (data + 0x10), "SFC-ADX BACKUP", 14) != 0)
return (TRUE);
else
return (FALSE);
}
static bool8 is_BSCart_BIOS(const uint8 *data, uint32 size)
{
if ((data[0x7FB2] == 0x5A) && (data[0x7FB5] != 0x20) && (data[0x7FDA] == 0x33))
{
Memory.LoROM = TRUE;
Memory.HiROM = FALSE;
return (TRUE);
}
else if ((data[0xFFB2] == 0x5A) && (data[0xFFB5] != 0x20) && (data[0xFFDA] == 0x33))
{
Memory.LoROM = FALSE;
Memory.HiROM = TRUE;
return (TRUE);
}
else
return (FALSE);
}
static bool8 is_BSCartSA1_BIOS (const uint8 *data, uint32 size)
{
//Same basic check as BSCart
if (!is_BSCart_BIOS(data, size))
return (FALSE);
//Checks if the game is Itoi's Bass Fishing No. 1 (ZBPJ) or SD Gundam G-NEXT (ZX3J)
if (strncmp((char *)(data + 0x7fb2), "ZBPJ", 4) == 0 || strncmp((char *)(data + 0x7fb2), "ZX3J", 4) == 0)
return (TRUE);
else
return (FALSE);
}
static bool8 is_GNEXT_Add_On (const uint8 *data, uint32 size)
{
if (size == 0x80000)
return (TRUE);
else
return (FALSE);
}
int CMemory::ScoreHiROM (bool8 skip_header, int32 romoff)
{
uint8 *buf = ROM + 0xff00 + romoff + (skip_header ? 0x200 : 0);
int score = 0;
// Check for extended HiROM expansion used in Mother 2 Deluxe et al.
// Looks for size byte 13 (8MB) and an actual ROM size greater than 4MB
if (buf[0xd7] == 13 && CalculatedSize > 1024 * 1024 * 4)
score += 5;
if (buf[0xd5] & 0x1)
score += 2;
// Mode23 is SA-1
if (buf[0xd5] == 0x23)
score -= 2;
if (buf[0xd4] == 0x20)
score += 2;
if ((buf[0xdc] + (buf[0xdd] << 8)) + (buf[0xde] + (buf[0xdf] << 8)) == 0xffff)
{
score += 2;
if (0 != (buf[0xde] + (buf[0xdf] << 8)))
score++;
}
if (buf[0xda] == 0x33)
score += 2;
if ((buf[0xd5] & 0xf) < 4)
score += 2;
if (!(buf[0xfd] & 0x80))
score -= 6;
if ((buf[0xfc] + (buf[0xfd] << 8)) > 0xffb0)
score -= 2; // reduced after looking at a scan by Cowering
if (CalculatedSize > 1024 * 1024 * 3)
score += 4;
if ((1 << (buf[0xd7] - 7)) > 48)
score -= 1;
if (!allASCII(&buf[0xb0], 6))
score -= 1;
if (!allASCII(&buf[0xc0], ROM_NAME_LEN - 1))
score -= 1;
return (score);
}
int CMemory::ScoreLoROM (bool8 skip_header, int32 romoff)
{
uint8 *buf = ROM + 0x7f00 + romoff + (skip_header ? 0x200 : 0);
int score = 0;
if (!(buf[0xd5] & 0x1))
score += 3;
// Mode23 is SA-1
if (buf[0xd5] == 0x23)
score += 2;
if ((buf[0xdc] + (buf[0xdd] << 8)) + (buf[0xde] + (buf[0xdf] << 8)) == 0xffff)
{
score += 2;
if (0 != (buf[0xde] + (buf[0xdf] << 8)))
score++;
}
if (buf[0xda] == 0x33)
score += 2;
if ((buf[0xd5] & 0xf) < 4)
score += 2;
if (!(buf[0xfd] & 0x80))
score -= 6;
if ((buf[0xfc] + (buf[0xfd] << 8)) > 0xffb0)
score -= 2; // reduced per Cowering suggestion
if (CalculatedSize <= 1024 * 1024 * 16)
score += 2;
if ((1 << (buf[0xd7] - 7)) > 48)
score -= 1;
if (!allASCII(&buf[0xb0], 6))
score -= 1;
if (!allASCII(&buf[0xc0], ROM_NAME_LEN - 1))
score -= 1;
return (score);
}
int CMemory::First512BytesCountZeroes() const
{
const uint8 *buf = ROM;
int zeroCount = 0;
for (int i = 0; i < 512; i++)
{
if (buf[i] == 0)
{
zeroCount++;
}
}
return zeroCount;
}
uint32 CMemory::HeaderRemove (uint32 size, uint8 *buf)
{
uint32 calc_size = (size / 0x2000) * 0x2000;
if ((size - calc_size == 512 && !Settings.ForceNoHeader) || Settings.ForceHeader)
{
uint8 *NSRTHead = buf + 0x1D0; // NSRT Header Location
// detect NSRT header
if (!strncmp("NSRT", (char *) &NSRTHead[24], 4))
{
if (NSRTHead[28] == 22)
{
if (((std::accumulate(NSRTHead, NSRTHead + sizeof(NSRTHeader), 0) & 0xFF) == NSRTHead[30]) &&
(NSRTHead[30] + NSRTHead[31] == 255) && ((NSRTHead[0] & 0x0F) <= 13) &&
(((NSRTHead[0] & 0xF0) >> 4) <= 3) && ((NSRTHead[0] & 0xF0) >> 4))
memcpy(NSRTHeader, NSRTHead, sizeof(NSRTHeader));
}
}
memmove(buf, buf + 512, calc_size);
HeaderCount++;
size -= 512;
}
return (size);
}
uint32 CMemory::FileLoader (uint8 *buffer, const char *filename, uint32 maxsize)
{
// <- ROM size without header
// ** Memory.HeaderCount
// ** Memory.ROMFilename
uint32 totalSize = 0;
memset(NSRTHeader, 0, sizeof(NSRTHeader));
HeaderCount = 0;
auto path = splitpath(filename);
int nFormat = FILE_DEFAULT;
if (path.ext_is(".zip") || path.ext_is(".msu1"))
nFormat = FILE_ZIP;
else if (path.ext_is(".jma"))
nFormat = FILE_JMA;
switch (nFormat)
{
case FILE_ZIP:
{
#ifdef UNZIP_SUPPORT
if (!LoadZip(filename, &totalSize, buffer))
{
S9xMessage(S9X_ERROR, S9X_ROM_INFO, "Invalid Zip archive.");
return (0);
}
ROMFilename = filename;
#else
S9xMessage(S9X_ERROR, S9X_ROM_INFO, "This binary was not created with Zip support.");
return (0);
#endif
break;
}
case FILE_JMA:
{
#ifdef JMA_SUPPORT
size_t size = load_jma_file(filename, buffer);
if (!size)
{
S9xMessage(S9X_ERROR, S9X_ROM_INFO, "Invalid JMA archive.");
return (0);
}
totalSize = HeaderRemove(size, buffer);
ROMFilename = filename;
#else
S9xMessage(S9X_ERROR, S9X_ROM_INFO, "This binary was not created with JMA support.");
return (0);
#endif
break;
}
case FILE_DEFAULT:
default:
{
STREAM fp = OPEN_STREAM(filename, "rb");
if (!fp)
return (0);
ROMFilename = filename;
uint32 size = 0;
size = READ_STREAM(buffer, maxsize + 0x200, fp);
CLOSE_STREAM(fp);
totalSize = HeaderRemove(size, buffer);
break;
}
}
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).");
return ((uint32) totalSize);
}
bool8 CMemory::LoadROMMem (const uint8 *source, uint32 sourceSize)
{
if(!source || sourceSize > MAX_ROM_SIZE)
return FALSE;
ROMFilename = "MemoryROM";
do
{
memset(ROM,0, MAX_ROM_SIZE);
memset(&Multi, 0,sizeof(Multi));
memcpy(ROM,source,sourceSize);
}
while(!LoadROMInt(sourceSize));
return TRUE;
}
bool8 CMemory::LoadROM (const char *filename)
{
if(!filename || !*filename)
return FALSE;
S9xResetSaveTimer(FALSE); // reset oops timer here so that .oops file has rom name of previous rom
int32 totalFileSize;
do
{
memset(ROM,0, MAX_ROM_SIZE);
memset(&Multi, 0,sizeof(Multi));
totalFileSize = FileLoader(ROM, filename, MAX_ROM_SIZE);
if (!totalFileSize)
return (FALSE);
CheckForAnyPatch(filename, HeaderCount != 0, totalFileSize);
}
while(!LoadROMInt(totalFileSize));
return TRUE;
}
bool8 CMemory::LoadROMInt (int32 ROMfillSize)
{
Settings.DisplayColor = BUILD_PIXEL(31, 31, 31);
SET_UI_COLOR(255, 255, 255);
CalculatedSize = 0;
ExtendedFormat = NOPE;
int hi_score, lo_score;
int score_headered;
int score_nonheadered;
hi_score = ScoreHiROM(FALSE);
lo_score = ScoreLoROM(FALSE);
score_nonheadered = max(hi_score, lo_score);
score_headered = max(ScoreHiROM(TRUE), ScoreLoROM(TRUE));
bool size_is_likely_headered = ((ROMfillSize - 512) & 0xFFFF) == 0;
if (size_is_likely_headered) { score_headered += 2; } else { score_headered -= 2; }
if (First512BytesCountZeroes() >= 0x1E0) { score_headered += 2; } else { score_headered -= 2; }
bool headered_score_highest = score_headered > score_nonheadered;
if (HeaderCount == 0 && !Settings.ForceNoHeader && headered_score_highest)
{
memmove(ROM, ROM + 512, ROMfillSize - 512);
ROMfillSize -= 512;
S9xMessage(S9X_INFO, S9X_HEADER_WARNING, "Try 'force no-header' option if the game doesn't work");
// modifying ROM, so we need to rescore
hi_score = ScoreHiROM(FALSE);
lo_score = ScoreLoROM(FALSE);
}
CalculatedSize = ((ROMfillSize + 0x1fff) / 0x2000) * 0x2000;
if (CalculatedSize > 0x400000 &&
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x1320 && // exclude SuperFX
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x1420 &&
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x1520 &&
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x1A20 &&
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x3423 && // exclude SA-1
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x3523 &&
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x4332 && // exclude S-DD1
(ROM[0x7fd5] + (ROM[0x7fd6] << 8)) != 0x4532 &&
(ROM[0xffd5] + (ROM[0xffd6] << 8)) != 0xF93a && // exclude SPC7110
(ROM[0xffd5] + (ROM[0xffd6] << 8)) != 0xF53a)
ExtendedFormat = YEAH;
// if both vectors are invalid, it's type 1 interleaved LoROM
if (ExtendedFormat == NOPE &&
((ROM[0x7ffc] + (ROM[0x7ffd] << 8)) < 0x8000) &&
((ROM[0xfffc] + (ROM[0xfffd] << 8)) < 0x8000))
{
if (!Settings.ForceInterleaved && !Settings.ForceNotInterleaved)
S9xDeinterleaveType1(ROMfillSize, ROM);
}
// CalculatedSize is now set, so rescore
hi_score = ScoreHiROM(FALSE);
lo_score = ScoreLoROM(FALSE);
uint8 *RomHeader = ROM;
if (ExtendedFormat != NOPE)
{
int swappedhirom, swappedlorom;
swappedhirom = ScoreHiROM(FALSE, 0x400000);
swappedlorom = ScoreLoROM(FALSE, 0x400000);
// set swapped here
if (max(swappedlorom, swappedhirom) >= max(lo_score, hi_score))
{
ExtendedFormat = BIGFIRST;
hi_score = swappedhirom;
lo_score = swappedlorom;
RomHeader += 0x400000;
}
else
ExtendedFormat = SMALLFIRST;
}
bool8 interleaved, tales = FALSE;
interleaved = Settings.ForceInterleaved || Settings.ForceInterleaved2 || Settings.ForceInterleaveGD24;
if (Settings.ForceLoROM || (!Settings.ForceHiROM && lo_score >= hi_score))
{
LoROM = TRUE;
HiROM = FALSE;
// ignore map type byte if not 0x2x or 0x3x
if ((RomHeader[0x7fd5] & 0xf0) == 0x20 || (RomHeader[0x7fd5] & 0xf0) == 0x30)
{
switch (RomHeader[0x7fd5] & 0xf)
{
case 1:
interleaved = TRUE;
break;
case 5:
interleaved = TRUE;
tales = TRUE;
break;
}
}
}
else
{
LoROM = FALSE;
HiROM = TRUE;
if ((RomHeader[0xffd5] & 0xf0) == 0x20 || (RomHeader[0xffd5] & 0xf0) == 0x30)
{
switch (RomHeader[0xffd5] & 0xf)
{
case 0:
case 3:
interleaved = TRUE;
break;
}
}
}
// this two games fail to be detected
if (!Settings.ForceHiROM && !Settings.ForceLoROM)
{
if (strncmp((char *) &ROM[0x7fc0], "YUYU NO QUIZ DE GO!GO!", 22) == 0 ||
(strncmp((char *) &ROM[0xffc0], "BATMAN--REVENGE JOKER", 21) == 0))
{
LoROM = TRUE;
HiROM = FALSE;
interleaved = FALSE;
tales = FALSE;
}
}
if (!Settings.ForceNotInterleaved && interleaved)
{
S9xMessage(S9X_INFO, S9X_ROM_INTERLEAVED_INFO, "ROM image is in interleaved format - converting...");
if (tales)
{
if (ExtendedFormat == BIGFIRST)
{
S9xDeinterleaveType1(0x400000, ROM);
S9xDeinterleaveType1(CalculatedSize - 0x400000, ROM + 0x400000);
}
else
{
S9xDeinterleaveType1(CalculatedSize - 0x400000, ROM);
S9xDeinterleaveType1(0x400000, ROM + CalculatedSize - 0x400000);
}
LoROM = FALSE;
HiROM = TRUE;
}
else if (Settings.ForceInterleaveGD24 && CalculatedSize == 0x300000)
{
bool8 t = LoROM;
LoROM = HiROM;
HiROM = t;
S9xDeinterleaveGD24(CalculatedSize, ROM);
}
else if (Settings.ForceInterleaved2)
S9xDeinterleaveType2(CalculatedSize, ROM);
else
{
bool8 t = LoROM;
LoROM = HiROM;
HiROM = t;
S9xDeinterleaveType1(CalculatedSize, ROM);
}
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)))
{
S9xMessage(S9X_INFO, S9X_ROM_CONFUSING_FORMAT_INFO, "ROM lied about its type! Trying again.");
Settings.ForceNotInterleaved = TRUE;
Settings.ForceInterleaved = FALSE;
return (FALSE);
}
}
if (ExtendedFormat == SMALLFIRST)
tales = TRUE;
if (tales)
{
uint8 *tmp = (uint8 *) malloc(CalculatedSize - 0x400000);
if (tmp)
{
S9xMessage(S9X_INFO, S9X_ROM_INTERLEAVED_INFO, "Fixing swapped ExHiROM...");
memmove(tmp, ROM, CalculatedSize - 0x400000);
memmove(ROM, ROM + CalculatedSize - 0x400000, 0x400000);
memmove(ROM + 0x400000, tmp, CalculatedSize - 0x400000);
free(tmp);
}
}
memset(&SNESGameFixes, 0, sizeof(SNESGameFixes));
SNESGameFixes.SRAMInitialValue = 0x60;
InitROM();
S9xReset();
S9xDeleteCheats();
S9xLoadCheatFile(S9xGetFilename(".cht", CHEAT_DIR).c_str());
return (TRUE);
}
bool8 CMemory::LoadMultiCartMem (const uint8 *sourceA, uint32 sourceASize,
const uint8 *sourceB, uint32 sourceBSize,
const uint8 *bios, uint32 biosSize)
{
uint32 offset = 0;
memset(ROM, 0, MAX_ROM_SIZE);
memset(&Multi, 0, sizeof(Multi));
if(bios) {
if(!is_SufamiTurbo_BIOS(bios,biosSize))
return FALSE;
memcpy(ROM,bios,biosSize);
offset+=biosSize;
}
if(sourceA) {
memcpy(ROM + offset,sourceA,sourceASize);
Multi.cartOffsetA = offset;
Multi.cartSizeA = sourceASize;
offset += sourceASize;
strcpy(Multi.fileNameA,"MemCartA");
}
if(sourceB) {
memcpy(ROM + offset,sourceB,sourceBSize);
Multi.cartOffsetB = offset;
Multi.cartSizeB = sourceBSize;
offset += sourceBSize;
strcpy(Multi.fileNameB,"MemCartB");
}
return LoadMultiCartInt();
}
bool8 CMemory::LoadMultiCart (const char *cartA, const char *cartB)
{
S9xResetSaveTimer(FALSE); // reset oops timer here so that .oops file has rom name of previous rom
memset(ROM, 0, MAX_ROM_SIZE);
memset(&Multi, 0, sizeof(Multi));
Settings.DisplayColor = BUILD_PIXEL(31, 31, 31);
SET_UI_COLOR(255, 255, 255);
if (cartB && cartB[0])
Multi.cartSizeB = FileLoader(ROM, cartB, MAX_ROM_SIZE);
if (Multi.cartSizeB) {
strcpy(Multi.fileNameB, cartB);
CheckForAnyPatch(cartB, HeaderCount != 0, Multi.cartSizeB);
Multi.cartOffsetB = 0x400000;
memcpy(ROM + Multi.cartOffsetB,ROM,Multi.cartSizeB);
}
if (cartA && cartA[0])
Multi.cartSizeA = FileLoader(ROM, cartA, MAX_ROM_SIZE);
if (Multi.cartSizeA) {
strcpy(Multi.fileNameA, cartA);
CheckForAnyPatch(cartA, HeaderCount != 0, Multi.cartSizeA);
}
return LoadMultiCartInt();
}
bool8 CMemory::LoadMultiCartInt ()
{
bool8 r = TRUE;
CalculatedSize = 0;
ExtendedFormat = NOPE;
if (Multi.cartSizeA)
{
if (is_SufamiTurbo_Cart(ROM + Multi.cartOffsetA, Multi.cartSizeA))
Multi.cartType = 4;
else
if (is_BSCartSA1_BIOS(ROM + Multi.cartOffsetA, Multi.cartSizeA))
Multi.cartType = 5;
else
if (is_BSCart_BIOS(ROM + Multi.cartOffsetA, Multi.cartSizeA))
Multi.cartType = 3;
}
else
if (Multi.cartSizeB)
{
if (is_SufamiTurbo_Cart(ROM + Multi.cartOffsetB, Multi.cartSizeB))
Multi.cartType = 4;
}
else
Multi.cartType = 4; // assuming BIOS only
if(Multi.cartType == 4 && Multi.cartOffsetA == 0) { // try to load bios from file
Multi.cartOffsetA = 0x40000;
if(Multi.cartSizeA)
memmove(ROM + Multi.cartOffsetA, ROM, Multi.cartSizeA + Multi.cartSizeB);
else if(Multi.cartOffsetB) // clear cart A so the bios can detect that it's not present
memset(ROM, 0, Multi.cartOffsetB);
FILE *fp;
size_t size;
std::string path = S9xGetDirectory(BIOS_DIR) + SLASH_STR + "STBIOS.bin";
fp = fopen(path.c_str(), "rb");
if (fp)
{
size = fread((void *) ROM, 1, 0x40000, fp);
fclose(fp);
if (!is_SufamiTurbo_BIOS(ROM, size))
return (FALSE);
}
else
return (FALSE);
ROMFilename = path;
}
switch (Multi.cartType)
{
case 4:
r = LoadSufamiTurbo();
break;
case 3:
case 5:
r = LoadBSCart();
break;
default:
r = FALSE;
}
if (!r)
{
memset(&Multi, 0, sizeof(Multi));
return (FALSE);
}
if (Multi.cartSizeA)
ROMFilename = Multi.fileNameA;
else if (Multi.cartSizeB)
ROMFilename = Multi.fileNameB;
memset(&SNESGameFixes, 0, sizeof(SNESGameFixes));
SNESGameFixes.SRAMInitialValue = 0x60;
InitROM();
S9xReset();
S9xDeleteCheats();
S9xLoadCheatFile(S9xGetFilename(".cht", CHEAT_DIR).c_str());
return (TRUE);
}
bool8 CMemory::LoadSufamiTurbo ()
{
Multi.sramA = SRAM;
Multi.sramB = SRAM + 0x10000;
if (Multi.cartSizeA)
{
Multi.sramSizeA = 4; // ROM[0x37]?
Multi.sramMaskA = Multi.sramSizeA ? ((1 << (Multi.sramSizeA + 3)) * 128 - 1) : 0;
}
if (Multi.cartSizeB)
{
if (!is_SufamiTurbo_Cart(ROM + Multi.cartOffsetB, Multi.cartSizeB))
Multi.cartSizeB = 0;
}
if (Multi.cartSizeB)
{
Multi.sramSizeB = 4; // ROM[0x37]?
Multi.sramMaskB = Multi.sramSizeB ? ((1 << (Multi.sramSizeB + 3)) * 128 - 1) : 0;
}
LoROM = TRUE;
HiROM = FALSE;
CalculatedSize = 0x40000;
return (TRUE);
}
bool8 CMemory::LoadBSCart ()
{
Multi.sramA = SRAM;
Multi.sramB = NULL;
if (LoROM)
Multi.sramSizeA = ROM[0x7fd8];
else
Multi.sramSizeA = ROM[0xffd8];
Multi.sramMaskA = Multi.sramSizeA ? ((1 << (Multi.sramSizeA + 3)) * 128 - 1) : 0;
Multi.sramSizeB = 0;
Multi.sramMaskB = 0;
CalculatedSize = Multi.cartSizeA;
if (Multi.cartSizeB == 0 && Multi.cartSizeA <= (int32)(MAX_ROM_SIZE - 0x100000 - Multi.cartOffsetA))
{
//Initialize 1MB Empty Memory Pack only if cart B is cleared
//It does not make a Memory Pack if game is loaded like a normal ROM
Multi.cartOffsetB = Multi.cartOffsetA + CalculatedSize;
Multi.cartSizeB = 0x100000;
memset(Memory.ROM + Multi.cartOffsetB, 0xFF, 0x100000);
}
return (TRUE);
}
bool8 CMemory::LoadGNEXT ()
{
Multi.sramA = SRAM;
Multi.sramB = NULL;
Multi.sramSizeA = ROM[0x7fd8];
Multi.sramMaskA = Multi.sramSizeA ? ((1 << (Multi.sramSizeA + 3)) * 128 - 1) : 0;
Multi.sramSizeB = 0;
Multi.sramMaskB = 0;
if (Multi.cartSizeB)
{
if (!is_GNEXT_Add_On(ROM + Multi.cartOffsetB, Multi.cartSizeB))
Multi.cartSizeB = 0;
}
LoROM = TRUE;
HiROM = FALSE;
CalculatedSize = Multi.cartSizeA;
return (TRUE);
}
bool8 CMemory::LoadSRTC (void)
{
FILE *fp;
fp = fopen(S9xGetFilename(".rtc", SRAM_DIR).c_str(), "rb");
if (!fp)
return (FALSE);
if (fread(RTCData.reg, 1, 20, fp) < 20)
memset (RTCData.reg, 0, 20);
fclose(fp);
return (TRUE);
}
bool8 CMemory::SaveSRTC (void)
{
FILE *fp;
fp = fopen(S9xGetFilename(".rtc", SRAM_DIR).c_str(), "wb");
if (!fp)
return (FALSE);
if (fwrite(RTCData.reg, 1, 20, fp) < 20)
{
printf ("Failed to save clock data.\n");
}
fclose(fp);
return (TRUE);
}
void CMemory::ClearSRAM (bool8 onlyNonSavedSRAM)
{
if (onlyNonSavedSRAM)
if (!(Settings.SuperFX && ROMType < 0x15) && !(Settings.SA1 && ROMType == 0x34)) // can have SRAM
return;
// TODO: If SRAM size changes change this value as well
memset(SRAM, SNESGameFixes.SRAMInitialValue, 0x80000);
}
bool8 CMemory::LoadSRAM (const char *filename)
{
FILE *file;
int size, len;
ClearSRAM();
if (Multi.cartType && Multi.sramSizeB)
{
size = (1 << (Multi.sramSizeB + 3)) * 128;
file = fopen(S9xGetFilename(Multi.fileNameB, ".srm", SRAM_DIR).c_str(), "rb");
if (file)
{
len = fread((char *) Multi.sramB, 1, 0x10000, file);
fclose(file);
if (len - size == 512)
memmove(Multi.sramB, Multi.sramB + 512, size);
}
}
size = SRAMSize ? (1 << (SRAMSize + 3)) * 128 : 0;
if (LoROM)
size = size < 0x70000 ? size : 0x70000;
else if (HiROM)
size = size < 0x40000 ? size : 0x40000;
if (size)
{
file = fopen(filename, "rb");
if (file)
{
len = fread((char *) SRAM, 1, size, file);
fclose(file);
if (len - size == 512)
memmove(SRAM, SRAM + 512, size);
if (Settings.SRTC || Settings.SPC7110RTC)
LoadSRTC();
return (TRUE);
}
else if (Settings.BS && !Settings.BSXItself)
{
// The BS game's SRAM was not found
// Try to read BS-X.srm instead
std::string path = S9xGetDirectory(SRAM_DIR) + SLASH_STR + "BS-X.srm";
file = fopen(path.c_str(), "rb");
if (file)
{
len = fread((char *) SRAM, 1, size, file);
fclose(file);
if (len - size == 512)
memmove(SRAM, SRAM + 512, size);
S9xMessage(S9X_INFO, S9X_ROM_INFO, "The SRAM file wasn't found: BS-X.srm was read instead.");
return (TRUE);
}
else
{
S9xMessage(S9X_INFO, S9X_ROM_INFO, "The SRAM file wasn't found, BS-X.srm wasn't found either.");
return (FALSE);
}
}
return (FALSE);
}
return (TRUE);
}
bool8 CMemory::SaveSRAM (const char *filename)
{
if (Settings.SuperFX && ROMType < 0x15) // doesn't have SRAM
return (TRUE);
if (Settings.SA1 && ROMType == 0x34) // doesn't have SRAM
return (TRUE);
FILE *file;
int size;
if (Multi.cartType && Multi.sramSizeB)
{
std::string name = S9xGetFilename(Multi.fileNameB, ".srm", SRAM_DIR);
size = (1 << (Multi.sramSizeB + 3)) * 128;
file = fopen(name.c_str(), "wb");
if (file)
{
if (!fwrite((char *) Multi.sramB, size, 1, file))
printf ("Couldn't write to subcart SRAM file.\n");
fclose(file);
}
}
size = SRAMSize ? (1 << (SRAMSize + 3)) * 128 : 0;
if (LoROM)
size = size < 0x70000 ? size : 0x70000;
else if (HiROM)
size = size < 0x40000 ? size : 0x40000;
if (size)
{
file = fopen(filename, "wb");
if (file)
{
if (!fwrite((char *) SRAM, size, 1, file))
printf ("Couldn't write to SRAM file.\n");
fclose(file);
if (Settings.SRTC || Settings.SPC7110RTC)
SaveSRTC();
return (TRUE);
}
}
return (FALSE);
}
bool8 CMemory::SaveMPAK (const char *filename)
{
if (Settings.BS || (Multi.cartSizeB && (Multi.cartType == 3)))
{
FILE *file;
int size;
size = 0x100000;
if (size)
{
file = fopen(filename, "wb");
if (file)
{
size_t written;
written = fwrite((char *)Memory.ROM + Multi.cartOffsetB, size, 1, file);
fclose(file);
return (written > 0);
}
}
}
return (FALSE);
}
// initialization
static uint32 caCRC32 (uint8 *array, uint32 size, uint32 crc32)
{
for (uint32 i = 0; i < size; i++)
crc32 = ((crc32 >> 8) & 0x00FFFFFF) ^ crc32Table[(crc32 ^ array[i]) & 0xFF];
return (~crc32);
}
void CMemory::ParseSNESHeader (uint8 *RomHeader)
{
bool8 bs = Settings.BS & !Settings.BSXItself;
strncpy(ROMName, (char *) &RomHeader[0x10], ROM_NAME_LEN - 1);
if (bs)
memset(ROMName + 16, 0x20, ROM_NAME_LEN - 17);
if (bs)
{
if (!(((RomHeader[0x29] & 0x20) && CalculatedSize < 0x100000) ||
(!(RomHeader[0x29] & 0x20) && CalculatedSize == 0x100000)))
printf("BS: Size mismatch\n");
// FIXME
int p = 0;
while ((1 << p) < (int) CalculatedSize)
p++;
ROMSize = p - 10;
}
else
ROMSize = RomHeader[0x27];
SRAMSize = bs ? 5 /* BS-X */ : RomHeader[0x28];
ROMSpeed = bs ? RomHeader[0x28] : RomHeader[0x25];
ROMType = bs ? 0xE5 /* BS-X */ : RomHeader[0x26];
ROMRegion = bs ? 0 : RomHeader[0x29];
ROMChecksum = RomHeader[0x2E] + (RomHeader[0x2F] << 8);
ROMComplementChecksum = RomHeader[0x2C] + (RomHeader[0x2D] << 8);
memmove(ROMId, &RomHeader[0x02], 4);
if (RomHeader[0x2A] != 0x33)
CompanyId = ((RomHeader[0x2A] >> 4) & 0x0F) * 36 + (RomHeader[0x2A] & 0x0F);
else
if (isalnum(RomHeader[0x00]) && isalnum(RomHeader[0x01]))
{
int l, r, l2, r2;
l = toupper(RomHeader[0x00]);
r = toupper(RomHeader[0x01]);
l2 = (l > '9') ? l - '7' : l - '0';
r2 = (r > '9') ? r - '7' : r - '0';
CompanyId = l2 * 36 + r2;
}
}
void CMemory::InitROM (void)
{
Settings.SuperFX = FALSE;
Settings.DSP = 0;
Settings.SA1 = FALSE;
Settings.C4 = FALSE;
Settings.SDD1 = FALSE;
Settings.SPC7110 = FALSE;
Settings.SPC7110RTC = FALSE;
Settings.OBC1 = FALSE;
Settings.SETA = 0;
Settings.SRTC = FALSE;
Settings.BS = FALSE;
Settings.MSU1 = FALSE;
SuperFX.nRomBanks = CalculatedSize >> 15;
//// Parse ROM header and read ROM informatoin
CompanyId = -1;
memset(ROMId, 0, 5);
uint8 *RomHeader = ROM + 0x7FB0;
if (ExtendedFormat == BIGFIRST)
RomHeader += 0x400000;
if (HiROM)
RomHeader += 0x8000;
S9xInitBSX(); // Set BS header before parsing
ParseSNESHeader(RomHeader);
//// Detect and initialize chips
//// detection codes are compatible with NSRT
// DSP1/2/3/4
if (ROMType == 0x03)
{
if (ROMSpeed == 0x30)
Settings.DSP = 4; // DSP4
else
Settings.DSP = 1; // DSP1
}
else if (ROMType == 0x05)
{
if (ROMSpeed == 0x20)
Settings.DSP = 2; // DSP2
else if (ROMSpeed == 0x30 && RomHeader[0x2a] == 0xb2)
Settings.DSP = 3; // DSP3
else
Settings.DSP = 1; // DSP1
}
switch (Settings.DSP)
{
case 1: // DSP1
if (HiROM)
{
DSP0.boundary = 0x7000;
DSP0.maptype = M_DSP1_HIROM;
}
else if (CalculatedSize > 0x100000)
{
DSP0.boundary = 0x4000;
DSP0.maptype = M_DSP1_LOROM_L;
}
else
{
DSP0.boundary = 0xc000;
DSP0.maptype = M_DSP1_LOROM_S;
}
SetDSP = &DSP1SetByte;
GetDSP = &DSP1GetByte;
break;
case 2: // DSP2
DSP0.boundary = 0x10000;
DSP0.maptype = M_DSP2_LOROM;
SetDSP = &DSP2SetByte;
GetDSP = &DSP2GetByte;
break;
case 3: // DSP3
DSP0.boundary = 0xc000;
DSP0.maptype = M_DSP3_LOROM;
SetDSP = &DSP3SetByte;
GetDSP = &DSP3GetByte;
break;
case 4: // DSP4
DSP0.boundary = 0xc000;
DSP0.maptype = M_DSP4_LOROM;
SetDSP = &DSP4SetByte;
GetDSP = &DSP4GetByte;
break;
default:
SetDSP = NULL;
GetDSP = NULL;
break;
}
uint32 identifier = ((ROMType & 0xff) << 8) + (ROMSpeed & 0xff);
switch (identifier)
{
// SRTC
case 0x5535:
Settings.SRTC = TRUE;
S9xInitSRTC();
break;
// SPC7110
case 0xF93A:
Settings.SPC7110RTC = TRUE;
// Fall through
case 0xF53A:
Settings.SPC7110 = TRUE;
S9xInitSPC7110();
break;
// OBC1
case 0x2530:
Settings.OBC1 = TRUE;
break;
// SA1
case 0x3423:
case 0x3523:
Settings.SA1 = TRUE;
break;
// SuperFX
case 0x1320:
case 0x1420:
case 0x1520:
case 0x1A20:
// SuperFX FastROM for ROM hacks
case 0x1330:
case 0x1430:
case 0x1530:
case 0x1A30:
Settings.SuperFX = TRUE;
S9xInitSuperFX();
if (ROM[0x7FDA] == 0x33)
SRAMSize = ROM[0x7FBD];
else
SRAMSize = 5;
break;
// SDD1
case 0x4332:
case 0x4532:
Settings.SDD1 = TRUE;
break;
// ST018
case 0xF530:
Settings.SETA = ST_018;
SetSETA = NULL;
GetSETA = NULL;
SRAMSize = 2;
SNESGameFixes.SRAMInitialValue = 0x00;
break;
// ST010/011
case 0xF630:
if (ROM[0x7FD7] == 0x09)
{
Settings.SETA = ST_011;
SetSETA = &S9xSetST011;
GetSETA = &S9xGetST011;
}
else
{
Settings.SETA = ST_010;
SetSETA = &S9xSetST010;
GetSETA = &S9xGetST010;
}
SRAMSize = 2;
SNESGameFixes.SRAMInitialValue = 0x00;
break;
// C4
case 0xF320:
Settings.C4 = TRUE;
break;
}
// MSU1
Settings.MSU1 = S9xMSU1ROMExists();
//// Map memory and calculate checksum
Map_Initialize();
CalculatedChecksum = 0;
if (HiROM)
{
if (Settings.BS)
/* Do nothing */;
else if (Settings.SPC7110)
Map_SPC7110HiROMMap();
else if (ExtendedFormat != NOPE)
Map_ExtendedHiROMMap();
else if (Multi.cartType == 3)
Map_BSCartHiROMMap();
else
Map_HiROMMap();
}
else
{
if (Settings.BS)
/* Do nothing */;
else if (Settings.SETA && Settings.SETA != ST_018)
Map_SetaDSPLoROMMap();
else if (Settings.SuperFX)
Map_SuperFXLoROMMap();
else if (Settings.SA1)
{
if (Multi.cartType == 5)
Map_BSSA1LoROMMap();
else
Map_SA1LoROMMap();
}
else if (Settings.SDD1)
Map_SDD1LoROMMap();
else if (ExtendedFormat != NOPE)
Map_JumboLoROMMap();
else
if (strncmp(ROMName, "WANDERERS FROM YS", 17) == 0)
Map_NoMAD1LoROMMap();
else if (Multi.cartType == 3)
if (strncmp(ROMName, "SOUND NOVEL-TCOOL", 17) == 0 ||
strncmp(ROMName, "DERBY STALLION 96", 17) == 0)
Map_BSCartLoROMMap(1);
else
Map_BSCartLoROMMap(0);
else if (strncmp(ROMName, "SOUND NOVEL-TCOOL", 17) == 0 ||
strncmp(ROMName, "DERBY STALLION 96", 17) == 0)
Map_ROM24MBSLoROMMap();
else if (strncmp(ROMName, "THOROUGHBRED BREEDER3", 21) == 0 ||
strncmp(ROMName, "RPG-TCOOL 2", 11) == 0)
Map_SRAM512KLoROMMap();
else if (strncmp(ROMName, "ADD-ON BASE CASSETE", 19) == 0)
{
if (Multi.cartType == 4)
{
SRAMSize = Multi.sramSizeA;
Map_SufamiTurboLoROMMap();
}
else
{
SRAMSize = 5;
Map_SufamiTurboPseudoLoROMMap();
}
}
else
Map_LoROMMap();
}
Checksum_Calculate();
bool8 isChecksumOK = (ROMChecksum + ROMComplementChecksum == 0xffff) &
(ROMChecksum == CalculatedChecksum);
//// Build more ROM information
// CRC32
if (!Settings.BS || Settings.BSXItself) // Not BS Dump
{
ROMCRC32 = caCRC32(ROM, CalculatedSize);
sha256sum(ROM, CalculatedSize, ROMSHA256);
}
else // Convert to correct format before scan
{
int offset = HiROM ? 0xffc0 : 0x7fc0;
// Backup
uint8 BSMagic0 = ROM[offset + 22],
BSMagic1 = ROM[offset + 23];
// uCONSRT standard
ROM[offset + 22] = 0x42;
ROM[offset + 23] = 0x00;
// Calc
ROMCRC32 = caCRC32(ROM, CalculatedSize);
sha256sum(ROM, CalculatedSize, ROMSHA256);
// Convert back
ROM[offset + 22] = BSMagic0;
ROM[offset + 23] = BSMagic1;
}
// NTSC/PAL
if (Settings.ForceNTSC)
Settings.PAL = FALSE;
else if (Settings.ForcePAL)
Settings.PAL = TRUE;
else if (!Settings.BS && (((ROMRegion >= 2) && (ROMRegion <= 12)) || ROMRegion == 18)) // 18 is used by "Tintin in Tibet (Europe) (En,Es,Sv)"
Settings.PAL = TRUE;
else
Settings.PAL = FALSE;
if (Settings.PAL)
{
Settings.FrameTime = Settings.FrameTimePAL;
ROMFramesPerSecond = 50;
}
else
{
Settings.FrameTime = Settings.FrameTimeNTSC;
ROMFramesPerSecond = 60;
}
// truncate cart name
ROMName[ROM_NAME_LEN - 1] = 0;
if (strlen(ROMName))
{
char *p = ROMName + strlen(ROMName);
if (p > ROMName + 21 && ROMName[20] == ' ')
p = ROMName + 21;
while (p > ROMName && *(p - 1) == ' ')
p--;
*p = 0;
}
// SRAM size
SRAMMask = SRAMSize ? ((1 << (SRAMSize + 3)) * 128) - 1 : 0;
// checksum
if (!isChecksumOK || ((uint32) CalculatedSize > (uint32) (((1 << (ROMSize - 7)) * 128) * 1024)))
{
Settings.DisplayColor = BUILD_PIXEL(31, 31, 0);
SET_UI_COLOR(255, 255, 0);
}
// Use slight blue tint to indicate ROM was patched.
if (Settings.IsPatched)
{
Settings.DisplayColor = BUILD_PIXEL(26, 26, 31);
SET_UI_COLOR(216, 216, 255);
}
if (Multi.cartType == 4)
{
Settings.DisplayColor = BUILD_PIXEL(0, 16, 31);
SET_UI_COLOR(0, 128, 255);
}
//// Initialize emulation
Timings.H_Max_Master = SNES_CYCLES_PER_SCANLINE;
Timings.H_Max = Timings.H_Max_Master;
Timings.HBlankStart = SNES_HBLANK_START_HC;
Timings.HBlankEnd = SNES_HBLANK_END_HC;
Timings.HDMAInit = SNES_HDMA_INIT_HC;
Timings.HDMAStart = SNES_HDMA_START_HC;
Timings.RenderPos = SNES_RENDER_START_HC;
Timings.V_Max_Master = Settings.PAL ? SNES_MAX_PAL_VCOUNTER : SNES_MAX_NTSC_VCOUNTER;
Timings.V_Max = Timings.V_Max_Master;
/* From byuu: The total delay time for both the initial (H)DMA sync (to the DMA clock),
and the end (H)DMA sync (back to the last CPU cycle's mcycle rate (6, 8, or 12)) always takes between 12-24 mcycles.
Possible delays: { 12, 14, 16, 18, 20, 22, 24 }
XXX: Snes9x can't emulate this timing :( so let's use the average value... */
Timings.DMACPUSync = 18;
/* If the CPU is halted (i.e. for DMA) while /NMI goes low, the NMI will trigger
after the DMA completes (even if /NMI goes high again before the DMA
completes). In this case, there is a 24-30 cycle delay between the end of DMA
and the NMI handler, time enough for an instruction or two. */
// Wild Guns, Mighty Morphin Power Rangers - The Fighting Edition
Timings.NMIDMADelay = 24;
Timings.IRQTriggerCycles = 14;
Timings.APUSpeedup = 0;
S9xAPUTimingSetSpeedup(Timings.APUSpeedup);
IPPU.TotalEmulatedFrames = 0;
//// Hack games
ApplyROMFixes();
//// Show ROM information
ROMId[4] = 0;
strcpy(ROMId, SafeString(ROMId).c_str());
sprintf(String, "\"%s\" [%s] %s, %s, %s, %s, SRAM:%s, ID:%s, CRC32:%08X",
SafeString(ROMName).c_str(), isChecksumOK ? "checksum ok" : ((Multi.cartType == 4) ? "no checksum" : "bad checksum"),
MapType(), Size(), KartContents(), Settings.PAL ? "PAL" : "NTSC", StaticRAMSize(), ROMId, ROMCRC32);
S9xMessage(S9X_INFO, S9X_ROM_INFO, String);
Settings.ForceLoROM = FALSE;
Settings.ForceHiROM = FALSE;
Settings.ForceHeader = FALSE;
Settings.ForceNoHeader = FALSE;
Settings.ForceInterleaved = FALSE;
Settings.ForceInterleaved2 = FALSE;
Settings.ForceInterleaveGD24 = FALSE;
Settings.ForceNotInterleaved = FALSE;
Settings.ForcePAL = FALSE;
Settings.ForceNTSC = FALSE;
Settings.TakeScreenshot = FALSE;
if (stopMovie)
S9xMovieStop(TRUE);
if (PostRomInitFunc)
PostRomInitFunc();
S9xVerifyControllers();
}
// memory map
uint32 CMemory::map_mirror (uint32 size, uint32 pos)
{
// from bsnes
if (size == 0)
return (0);
if (pos < size)
return (pos);
uint32 mask = 1 << 31;
while (!(pos & mask))
mask >>= 1;
if (size <= (pos & mask))
return (map_mirror(size, pos - mask));
else
return (mask + map_mirror(size - mask, pos - mask));
}
void CMemory::map_lorom (uint32 bank_s, uint32 bank_e, uint32 addr_s, uint32 addr_e, uint32 size)
{
uint32 c, i, p, addr;
for (c = bank_s; c <= bank_e; c++)
{
for (i = addr_s; i <= addr_e; i += 0x1000)
{
p = (c << 4) | (i >> 12);
addr = (c & 0x7f) * 0x8000;
Map[p] = ROM + map_mirror(size, addr) - (i & 0x8000);
BlockIsROM[p] = TRUE;
BlockIsRAM[p] = FALSE;
}
}
}
void CMemory::map_hirom (uint32 bank_s, uint32 bank_e, uint32 addr_s, uint32 addr_e, uint32 size)
{
uint32 c, i, p, addr;
for (c = bank_s; c <= bank_e; c++)
{
for (i = addr_s; i <= addr_e; i += 0x1000)
{
p = (c << 4) | (i >> 12);
addr = c << 16;
Map[p] = ROM + map_mirror(size, addr);
BlockIsROM[p] = TRUE;
BlockIsRAM[p] = FALSE;
}
}
}
void CMemory::map_lorom_offset (uint32 bank_s, uint32 bank_e, uint32 addr_s, uint32 addr_e, uint32 size, uint32 offset)
{
uint32 c, i, p, addr;
for (c = bank_s; c <= bank_e; c++)
{
for (i = addr_s; i <= addr_e; i += 0x1000)
{
p = (c << 4) | (i >> 12);
addr = ((c - bank_s) & 0x7f) * 0x8000;
Map[p] = ROM + offset + map_mirror(size, addr) - (i & 0x8000);
BlockIsROM[p] = TRUE;
BlockIsRAM[p] = FALSE;
}
}
}
void CMemory::map_hirom_offset (uint32 bank_s, uint32 bank_e, uint32 addr_s, uint32 addr_e, uint32 size, uint32 offset)
{
uint32 c, i, p, addr;
for (c = bank_s; c <= bank_e; c++)
{
for (i = addr_s; i <= addr_e; i += 0x1000)
{
p = (c << 4) | (i >> 12);
addr = (c - bank_s) << 16;
Map[p] = ROM + offset + map_mirror(size, addr);
BlockIsROM[p] = TRUE;
BlockIsRAM[p] = FALSE;
}
}
}
void CMemory::map_space (uint32 bank_s, uint32 bank_e, uint32 addr_s, uint32 addr_e, uint8 *data)
{
uint32 c, i, p;
for (c = bank_s; c <= bank_e; c++)
{
for (i = addr_s; i <= addr_e; i += 0x1000)
{
p = (c << 4) | (i >> 12);
Map[p] = data;
BlockIsROM[p] = FALSE;
BlockIsRAM[p] = TRUE;
}
}
}
void CMemory::map_index (uint32 bank_s, uint32 bank_e, uint32 addr_s, uint32 addr_e, int index, int type)
{
uint32 c, i, p;
bool8 isROM, isRAM;
isROM = ((type == MAP_TYPE_I_O) || (type == MAP_TYPE_RAM)) ? FALSE : TRUE;
isRAM = ((type == MAP_TYPE_I_O) || (type == MAP_TYPE_ROM)) ? FALSE : TRUE;
for (c = bank_s; c <= bank_e; c++)
{
for (i = addr_s; i <= addr_e; i += 0x1000)
{
p = (c << 4) | (i >> 12);
Map[p] = (uint8 *) (pint) index;
BlockIsROM[p] = isROM;
BlockIsRAM[p] = isRAM;
}
}
}
void CMemory::map_System (void)
{
// will be overwritten
map_space(0x00, 0x3f, 0x0000, 0x1fff, RAM);
map_index(0x00, 0x3f, 0x2000, 0x3fff, MAP_PPU, MAP_TYPE_I_O);
map_index(0x00, 0x3f, 0x4000, 0x5fff, MAP_CPU, MAP_TYPE_I_O);
map_space(0x80, 0xbf, 0x0000, 0x1fff, RAM);
map_index(0x80, 0xbf, 0x2000, 0x3fff, MAP_PPU, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x4000, 0x5fff, MAP_CPU, MAP_TYPE_I_O);
}
void CMemory::map_WRAM (void)
{
// will overwrite others
map_space(0x7e, 0x7e, 0x0000, 0xffff, RAM);
map_space(0x7f, 0x7f, 0x0000, 0xffff, RAM + 0x10000);
}
void CMemory::map_LoROMSRAM (void)
{
uint32 hi;
if (ROMSize > 11 || SRAMSize > 5)
hi = 0x7fff;
else
hi = 0xffff;
map_index(0x70, 0x7d, 0x0000, hi, MAP_LOROM_SRAM, MAP_TYPE_RAM);
if (SRAMSize > 0)
map_index(0xf0, 0xff, 0x0000, hi, MAP_LOROM_SRAM, MAP_TYPE_RAM);
}
void CMemory::map_HiROMSRAM (void)
{
map_index(0x20, 0x3f, 0x6000, 0x7fff, MAP_HIROM_SRAM, MAP_TYPE_RAM);
map_index(0xa0, 0xbf, 0x6000, 0x7fff, MAP_HIROM_SRAM, MAP_TYPE_RAM);
}
void CMemory::map_DSP (void)
{
switch (DSP0.maptype)
{
case M_DSP1_LOROM_S:
map_index(0x20, 0x3f, 0x8000, 0xffff, MAP_DSP, MAP_TYPE_I_O);
map_index(0xa0, 0xbf, 0x8000, 0xffff, MAP_DSP, MAP_TYPE_I_O);
break;
case M_DSP1_LOROM_L:
map_index(0x60, 0x6f, 0x0000, 0x7fff, MAP_DSP, MAP_TYPE_I_O);
map_index(0xe0, 0xef, 0x0000, 0x7fff, MAP_DSP, MAP_TYPE_I_O);
break;
case M_DSP1_HIROM:
map_index(0x00, 0x1f, 0x6000, 0x7fff, MAP_DSP, MAP_TYPE_I_O);
map_index(0x80, 0x9f, 0x6000, 0x7fff, MAP_DSP, MAP_TYPE_I_O);
break;
case M_DSP2_LOROM:
map_index(0x20, 0x3f, 0x6000, 0x6fff, MAP_DSP, MAP_TYPE_I_O);
map_index(0x20, 0x3f, 0x8000, 0xbfff, MAP_DSP, MAP_TYPE_I_O);
map_index(0xa0, 0xbf, 0x6000, 0x6fff, MAP_DSP, MAP_TYPE_I_O);
map_index(0xa0, 0xbf, 0x8000, 0xbfff, MAP_DSP, MAP_TYPE_I_O);
break;
case M_DSP3_LOROM:
map_index(0x20, 0x3f, 0x8000, 0xffff, MAP_DSP, MAP_TYPE_I_O);
map_index(0xa0, 0xbf, 0x8000, 0xffff, MAP_DSP, MAP_TYPE_I_O);
break;
case M_DSP4_LOROM:
map_index(0x30, 0x3f, 0x8000, 0xffff, MAP_DSP, MAP_TYPE_I_O);
map_index(0xb0, 0xbf, 0x8000, 0xffff, MAP_DSP, MAP_TYPE_I_O);
break;
}
}
void CMemory::map_C4 (void)
{
map_index(0x00, 0x3f, 0x6000, 0x7fff, MAP_C4, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x6000, 0x7fff, MAP_C4, MAP_TYPE_I_O);
}
void CMemory::map_OBC1 (void)
{
map_index(0x00, 0x3f, 0x6000, 0x7fff, MAP_OBC_RAM, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x6000, 0x7fff, MAP_OBC_RAM, MAP_TYPE_I_O);
}
void CMemory::map_SetaRISC (void)
{
map_index(0x00, 0x3f, 0x3000, 0x3fff, MAP_SETA_RISC, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x3000, 0x3fff, MAP_SETA_RISC, MAP_TYPE_I_O);
}
void CMemory::map_SetaDSP (void)
{
// where does the SETA chip access, anyway?
// please confirm this?
map_index(0x68, 0x6f, 0x0000, 0x7fff, MAP_SETA_DSP, MAP_TYPE_RAM);
// and this!
map_index(0x60, 0x67, 0x0000, 0x3fff, MAP_SETA_DSP, MAP_TYPE_I_O);
// ST-0010:
// map_index(0x68, 0x6f, 0x0000, 0x0fff, MAP_SETA_DSP, ?);
}
void CMemory::map_WriteProtectROM (void)
{
memmove((void *) WriteMap, (void *) Map, sizeof(Map));
for (int c = 0; c < 0x1000; c++)
{
if (BlockIsROM[c])
WriteMap[c] = (uint8 *) MAP_NONE;
}
}
void CMemory::Map_Initialize (void)
{
for (int c = 0; c < 0x1000; c++)
{
Map[c] = (uint8 *) MAP_NONE;
WriteMap[c] = (uint8 *) MAP_NONE;
BlockIsROM[c] = FALSE;
BlockIsRAM[c] = FALSE;
}
}
void CMemory::Map_LoROMMap (void)
{
printf("Map_LoROMMap\n");
map_System();
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_lorom(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize);
if (Settings.DSP)
map_DSP();
else
if (Settings.C4)
map_C4();
else
if (Settings.OBC1)
map_OBC1();
else
if (Settings.SETA == ST_018)
map_SetaRISC();
map_LoROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_NoMAD1LoROMMap (void)
{
printf("Map_NoMAD1LoROMMap\n");
map_System();
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_lorom(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize);
map_index(0x70, 0x7f, 0x0000, 0xffff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
map_index(0xf0, 0xff, 0x0000, 0xffff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_JumboLoROMMap (void)
{
// XXX: Which game uses this?
printf("Map_JumboLoROMMap\n");
map_System();
map_lorom_offset(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize - 0x400000, 0x400000);
map_lorom_offset(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize - 0x600000, 0x600000);
map_lorom_offset(0x80, 0xbf, 0x8000, 0xffff, 0x400000, 0);
map_lorom_offset(0xc0, 0xff, 0x0000, 0xffff, 0x400000, 0x200000);
map_LoROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_ROM24MBSLoROMMap (void)
{
// PCB: BSC-1A5M-01, BSC-1A7M-10
printf("Map_ROM24MBSLoROMMap\n");
map_System();
map_lorom_offset(0x00, 0x1f, 0x8000, 0xffff, 0x100000, 0);
map_lorom_offset(0x20, 0x3f, 0x8000, 0xffff, 0x100000, 0x100000);
map_lorom_offset(0x80, 0x9f, 0x8000, 0xffff, 0x100000, 0x200000);
map_lorom_offset(0xa0, 0xbf, 0x8000, 0xffff, 0x100000, 0x100000);
map_LoROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SRAM512KLoROMMap (void)
{
printf("Map_SRAM512KLoROMMap\n");
map_System();
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_lorom(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize);
map_space(0x70, 0x70, 0x0000, 0xffff, SRAM);
map_space(0x71, 0x71, 0x0000, 0xffff, SRAM + 0x8000);
map_space(0x72, 0x72, 0x0000, 0xffff, SRAM + 0x10000);
map_space(0x73, 0x73, 0x0000, 0xffff, SRAM + 0x18000);
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SufamiTurboLoROMMap (void)
{
printf("Map_SufamiTurboLoROMMap\n");
map_System();
map_lorom_offset(0x00, 0x1f, 0x8000, 0xffff, 0x40000, 0);
map_lorom_offset(0x20, 0x3f, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_lorom_offset(0x40, 0x5f, 0x8000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
map_lorom_offset(0x80, 0x9f, 0x8000, 0xffff, 0x40000, 0);
map_lorom_offset(0xa0, 0xbf, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_lorom_offset(0xc0, 0xdf, 0x8000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
if (Multi.sramSizeA)
{
map_index(0x60, 0x63, 0x8000, 0xffff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
map_index(0xe0, 0xe3, 0x8000, 0xffff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
}
if (Multi.sramSizeB)
{
map_index(0x70, 0x73, 0x8000, 0xffff, MAP_LOROM_SRAM_B, MAP_TYPE_RAM);
map_index(0xf0, 0xf3, 0x8000, 0xffff, MAP_LOROM_SRAM_B, MAP_TYPE_RAM);
}
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SufamiTurboPseudoLoROMMap (void)
{
// for combined images
printf("Map_SufamiTurboPseudoLoROMMap\n");
map_System();
map_lorom_offset(0x00, 0x1f, 0x8000, 0xffff, 0x40000, 0);
map_lorom_offset(0x20, 0x3f, 0x8000, 0xffff, 0x100000, 0x100000);
map_lorom_offset(0x40, 0x5f, 0x8000, 0xffff, 0x100000, 0x200000);
map_lorom_offset(0x80, 0x9f, 0x8000, 0xffff, 0x40000, 0);
map_lorom_offset(0xa0, 0xbf, 0x8000, 0xffff, 0x100000, 0x100000);
map_lorom_offset(0xc0, 0xdf, 0x8000, 0xffff, 0x100000, 0x200000);
// I don't care :P
map_space(0x60, 0x63, 0x8000, 0xffff, SRAM - 0x8000);
map_space(0xe0, 0xe3, 0x8000, 0xffff, SRAM - 0x8000);
map_space(0x70, 0x73, 0x8000, 0xffff, SRAM + 0x4000 - 0x8000);
map_space(0xf0, 0xf3, 0x8000, 0xffff, SRAM + 0x4000 - 0x8000);
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SuperFXLoROMMap (void)
{
printf("Map_SuperFXLoROMMap\n");
map_System();
// Replicate the first 2Mb of the ROM at ROM + 8MB such that each 32K
// block is repeated twice in each 64K block.
for (int c = 0; c < 64; c++)
{
memmove(&ROM[0x800000 + c * 0x10000], &ROM[c * 0x8000], 0x8000);
memmove(&ROM[0x808000 + c * 0x10000], &ROM[c * 0x8000], 0x8000);
}
// Check GSU revision (not 100% accurate but it works)
// GSU2
if (CalculatedSize > 0x400000)
{
map_lorom(0x00, 0x3f, 0x8000, 0xffff, 0x200000);
map_lorom_offset(0x80, 0xbf, 0x8000, 0xffff, 0x200000, 0x200000);
map_hirom_offset(0x40, 0x5f, 0x0000, 0xffff, 0x200000, 0);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize - 0x400000, 0x400000);
map_space(0x00, 0x3f, 0x6000, 0x7fff, SRAM - 0x6000);
map_space(0x80, 0xbf, 0x6000, 0x7fff, SRAM - 0x6000);
map_space(0x70, 0x70, 0x0000, 0xffff, SRAM);
map_space(0x71, 0x71, 0x0000, 0xffff, SRAM + 0x10000);
}
else if (CalculatedSize > 0x200000)
{
map_lorom(0x00, 0x3f, 0x8000, 0xffff, 0x200000);
map_lorom_offset(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize - 0x200000, 0x200000);
map_hirom_offset(0x40, 0x5f, 0x0000, 0xffff, 0x200000, 0);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize - 0x200000, 0x200000);
map_space(0x00, 0x3f, 0x6000, 0x7fff, SRAM - 0x6000);
map_space(0x80, 0xbf, 0x6000, 0x7fff, SRAM - 0x6000);
map_space(0x70, 0x70, 0x0000, 0xffff, SRAM);
map_space(0x71, 0x71, 0x0000, 0xffff, SRAM + 0x10000);
}
// GSU1
else
{
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_hirom_offset(0x40, 0x5f, 0x0000, 0xffff, CalculatedSize, 0);
map_hirom_offset(0xc0, 0xdf, 0x0000, 0xffff, CalculatedSize, 0);
map_space(0x00, 0x3f, 0x6000, 0x7fff, SRAM - 0x6000);
map_space(0x80, 0xbf, 0x6000, 0x7fff, SRAM - 0x6000);
map_space(0x70, 0x70, 0x0000, 0xffff, SRAM);
map_space(0x71, 0x71, 0x0000, 0xffff, SRAM + 0x10000);
map_space(0xf0, 0xf0, 0x0000, 0xffff, SRAM);
map_space(0xf1, 0xf1, 0x0000, 0xffff, SRAM + 0x10000);
}
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SetaDSPLoROMMap (void)
{
printf("Map_SetaDSPLoROMMap\n");
map_System();
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x40, 0x7f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_lorom(0xc0, 0xff, 0x8000, 0xffff, CalculatedSize);
map_SetaDSP();
map_LoROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SDD1LoROMMap (void)
{
printf("Map_SDD1LoROMMap\n");
map_System();
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_hirom_offset(0x60, 0x7f, 0x0000, 0xffff, CalculatedSize, 0);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize, 0); // will be overwritten dynamically
map_index(0x70, 0x7f, 0x0000, 0x7fff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
map_index(0xa0, 0xbf, 0x6000, 0x7fff, MAP_LOROM_SRAM, MAP_TYPE_RAM);
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SA1LoROMMap (void)
{
printf("Map_SA1LoROMMap\n");
map_System();
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize, 0);
map_space(0x00, 0x3f, 0x3000, 0x37ff, FillRAM);
map_space(0x80, 0xbf, 0x3000, 0x37ff, FillRAM);
map_index(0x00, 0x3f, 0x6000, 0x7fff, MAP_BWRAM, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x6000, 0x7fff, MAP_BWRAM, MAP_TYPE_I_O);
for (int c = 0x40; c < 0x4f; c++)
map_space(c, c, 0x0000, 0xffff, SRAM + (c & 3) * 0x10000);
map_WRAM();
map_WriteProtectROM();
// Now copy the map and correct it for the SA1 CPU.
memmove((void *) SA1.Map, (void *) Map, sizeof(Map));
memmove((void *) SA1.WriteMap, (void *) WriteMap, sizeof(WriteMap));
// SA-1 Banks 00->3f and 80->bf
for (int c = 0x000; c < 0x400; c += 0x10)
{
SA1.Map[c + 0] = SA1.Map[c + 0x800] = FillRAM + 0x3000;
SA1.Map[c + 1] = SA1.Map[c + 0x801] = (uint8 *) MAP_NONE;
SA1.WriteMap[c + 0] = SA1.WriteMap[c + 0x800] = FillRAM + 0x3000;
SA1.WriteMap[c + 1] = SA1.WriteMap[c + 0x801] = (uint8 *) MAP_NONE;
}
// SA-1 Banks 40->4f
for (int c = 0x400; c < 0x500; c++)
SA1.Map[c] = SA1.WriteMap[c] = (uint8*)MAP_HIROM_SRAM;
// SA-1 Banks 60->6f
for (int c = 0x600; c < 0x700; c++)
SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_BWRAM_BITMAP;
// WRAM is inaccessable
for (int c = 0x7e0; c < 0x800; c++)
SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_NONE;
BWRAM = SRAM;
}
void CMemory::Map_BSSA1LoROMMap(void)
{
printf("Map_BSSA1LoROMMap\n");
map_System();
map_lorom_offset(0x00, 0x3f, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_lorom_offset(0x80, 0xbf, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_space(0x00, 0x3f, 0x3000, 0x3fff, FillRAM);
map_space(0x80, 0xbf, 0x3000, 0x3fff, FillRAM);
map_index(0x00, 0x3f, 0x6000, 0x7fff, MAP_BWRAM, MAP_TYPE_I_O);
map_index(0x80, 0xbf, 0x6000, 0x7fff, MAP_BWRAM, MAP_TYPE_I_O);
for (int c = 0x40; c < 0x80; c++)
map_space(c, c, 0x0000, 0xffff, SRAM + (c & 1) * 0x10000);
map_WRAM();
map_WriteProtectROM();
// Now copy the map and correct it for the SA1 CPU.
memmove((void *) SA1.Map, (void *) Map, sizeof(Map));
memmove((void *) SA1.WriteMap, (void *) WriteMap, sizeof(WriteMap));
// SA-1 Banks 00->3f and 80->bf
for (int c = 0x000; c < 0x400; c += 0x10)
{
SA1.Map[c + 0] = SA1.Map[c + 0x800] = FillRAM + 0x3000;
SA1.Map[c + 1] = SA1.Map[c + 0x801] = (uint8 *) MAP_NONE;
SA1.WriteMap[c + 0] = SA1.WriteMap[c + 0x800] = FillRAM + 0x3000;
SA1.WriteMap[c + 1] = SA1.WriteMap[c + 0x801] = (uint8 *) MAP_NONE;
}
// SA-1 Banks 60->6f
for (int c = 0x600; c < 0x700; c++)
SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_BWRAM_BITMAP;
// WRAM is inaccessable
for (int c = 0x7e0; c < 0x800; c++)
SA1.Map[c] = SA1.WriteMap[c] = (uint8 *) MAP_NONE;
BWRAM = SRAM;
}
void CMemory::Map_HiROMMap (void)
{
printf("Map_HiROMMap\n");
map_System();
map_hirom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_hirom(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize);
map_hirom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_hirom(0xc0, 0xff, 0x0000, 0xffff, CalculatedSize);
if (Settings.DSP)
map_DSP();
map_HiROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_ExtendedHiROMMap (void)
{
printf("Map_ExtendedHiROMMap\n");
map_System();
map_hirom_offset(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize - 0x400000, 0x400000);
map_hirom_offset(0x40, 0x7f, 0x0000, 0xffff, CalculatedSize - 0x400000, 0x400000);
map_hirom_offset(0x80, 0xbf, 0x8000, 0xffff, 0x400000, 0);
map_hirom_offset(0xc0, 0xff, 0x0000, 0xffff, 0x400000, 0);
map_HiROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_SPC7110HiROMMap (void)
{
printf("Map_SPC7110HiROMMap\n");
map_System();
map_index(0x00, 0x00, 0x6000, 0x7fff, MAP_HIROM_SRAM, MAP_TYPE_RAM);
map_hirom(0x00, 0x0f, 0x8000, 0xffff, CalculatedSize);
map_index(0x30, 0x30, 0x6000, 0x7fff, MAP_HIROM_SRAM, MAP_TYPE_RAM);
if(Memory.ROMSize >= 13)
map_hirom_offset(0x40, 0x4f, 0x0000, 0xffff, CalculatedSize, 0x600000);
map_index(0x50, 0x50, 0x0000, 0xffff, MAP_SPC7110_DRAM, MAP_TYPE_ROM);
map_hirom(0x80, 0x8f, 0x8000, 0xffff, CalculatedSize);
map_hirom_offset(0xc0, 0xcf, 0x0000, 0xffff, CalculatedSize, 0);
map_index(0xd0, 0xff, 0x0000, 0xffff, MAP_SPC7110_ROM, MAP_TYPE_ROM);
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_BSCartLoROMMap(uint8 mapping)
{
printf("Map_BSCartLoROMMap\n");
BSX.MMC[0x02] = 0x00;
BSX.MMC[0x0C] = 0x80;
map_System();
if (mapping)
{
map_lorom_offset(0x00, 0x1f, 0x8000, 0xffff, 0x100000, 0);
map_lorom_offset(0x20, 0x3f, 0x8000, 0xffff, 0x100000, 0x100000);
map_lorom_offset(0x80, 0x9f, 0x8000, 0xffff, 0x100000, 0x200000);
map_lorom_offset(0xa0, 0xbf, 0x8000, 0xffff, 0x100000, 0x100000);
}
else
{
map_lorom(0x00, 0x3f, 0x8000, 0xffff, CalculatedSize);
map_lorom(0x40, 0x7f, 0x0000, 0x7fff, CalculatedSize);
map_lorom(0x80, 0xbf, 0x8000, 0xffff, CalculatedSize);
map_lorom(0xc0, 0xff, 0x0000, 0x7fff, CalculatedSize);
}
map_LoROMSRAM();
map_index(0xc0, 0xef, 0x0000, 0xffff, MAP_BSX, MAP_TYPE_RAM);
map_WRAM();
map_WriteProtectROM();
}
void CMemory::Map_BSCartHiROMMap(void)
{
printf("Map_BSCartHiROMMap\n");
BSX.MMC[0x02] = 0x80;
BSX.MMC[0x0C] = 0x80;
map_System();
map_hirom_offset(0x00, 0x1f, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_hirom_offset(0x20, 0x3f, 0x8000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
map_hirom_offset(0x40, 0x5f, 0x0000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_hirom_offset(0x60, 0x7f, 0x0000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
map_hirom_offset(0x80, 0x9f, 0x8000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
map_hirom_offset(0xa0, 0xbf, 0x8000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
map_hirom_offset(0xc0, 0xdf, 0x0000, 0xffff, Multi.cartSizeA, Multi.cartOffsetA);
if ((ROM[Multi.cartOffsetB + 0xFF00] == 0x4D)
&& (ROM[Multi.cartOffsetB + 0xFF02] == 0x50)
&& ((ROM[Multi.cartOffsetB + 0xFF06] & 0xF0) == 0x70))
{
//Type 7 Memory Pack detection - if detected, emulate it as Mask ROM
map_hirom_offset(0xe0, 0xff, 0x0000, 0xffff, Multi.cartSizeB, Multi.cartOffsetB);
}
else
{
map_index(0xe0, 0xff, 0x0000, 0xffff, MAP_BSX, MAP_TYPE_RAM);
}
map_HiROMSRAM();
map_WRAM();
map_WriteProtectROM();
}
// checksum
uint16 CMemory::checksum_calc_sum (uint8 *data, uint32 length)
{
uint16 sum = 0;
for (uint32 i = 0; i < length; i++)
sum += data[i];
return (sum);
}
uint16 CMemory::checksum_mirror_sum (uint8 *start, uint32 &length, uint32 mask)
{
// from NSRT
while (!(length & mask) && mask)
mask >>= 1;
uint16 part1 = checksum_calc_sum(start, mask);
uint16 part2 = 0;
uint32 next_length = length - mask;
if (next_length)
{
part2 = checksum_mirror_sum(start + mask, next_length, mask >> 1);
while (next_length < mask)
{
next_length += next_length;
part2 += part2;
}
length = mask + mask;
}
return (part1 + part2);
}
void CMemory::Checksum_Calculate (void)
{
// from NSRT
uint16 sum = 0;
if (Settings.BS && !Settings.BSXItself)
sum = checksum_calc_sum(ROM, CalculatedSize) - checksum_calc_sum(ROM + (HiROM ? 0xffb0 : 0x7fb0), 48);
else if (Settings.SPC7110)
{
sum = checksum_calc_sum(ROM, CalculatedSize);
if (CalculatedSize == 0x300000)
sum += sum;
}
else
{
if (CalculatedSize & 0x7fff)
sum = checksum_calc_sum(ROM, CalculatedSize);
else
{
uint32 length = CalculatedSize;
sum = checksum_mirror_sum(ROM, length);
}
}
CalculatedChecksum = sum;
}
// information
const char * CMemory::MapType (void)
{
return (HiROM ? ((ExtendedFormat != NOPE) ? "ExHiROM": "HiROM") : "LoROM");
}
const char * CMemory::StaticRAMSize (void)
{
static char str[20];
if (SRAMSize > 16)
strcpy(str, "Corrupt");
else
sprintf(str, "%dKbits", 8 * (SRAMMask + 1) / 1024);
return (str);
}
const char * CMemory::Size (void)
{
static char str[20];
if (Multi.cartType == 4)
strcpy(str, "N/A");
else if (ROMSize < 7 || ROMSize - 7 > 23)
strcpy(str, "Corrupt");
else
sprintf(str, "%dMbits", 1 << (ROMSize - 7));
return (str);
}
const char * CMemory::Revision (void)
{
static char str[20];
sprintf(str, "1.%d", HiROM ? ((ExtendedFormat != NOPE) ? ROM[0x40ffdb] : ROM[0xffdb]) : ROM[0x7fdb]);
return (str);
}
const char * CMemory::KartContents (void)
{
static char str[64];
static const char *contents[3] = { "ROM", "ROM+RAM", "ROM+RAM+BAT" };
char chip[20];
if (ROMType == 0 && !Settings.BS)
return ("ROM");
if (Settings.BS)
strcpy(chip, "+BS");
else if (Settings.SuperFX)
strcpy(chip, "+Super FX");
else if (Settings.SDD1)
strcpy(chip, "+S-DD1");
else if (Settings.OBC1)
strcpy(chip, "+OBC1");
else if (Settings.SA1)
strcpy(chip, "+SA-1");
else if (Settings.SPC7110RTC)
strcpy(chip, "+SPC7110+RTC");
else if (Settings.SPC7110)
strcpy(chip, "+SPC7110");
else if (Settings.SRTC)
strcpy(chip, "+S-RTC");
else if (Settings.C4)
strcpy(chip, "+C4");
else if (Settings.SETA == ST_010)
strcpy(chip, "+ST-010");
else if (Settings.SETA == ST_011)
strcpy(chip, "+ST-011");
else if (Settings.SETA == ST_018)
strcpy(chip, "+ST-018");
else if (Settings.DSP)
sprintf(chip, "+DSP-%d", Settings.DSP);
else
strcpy(chip, "");
if (Settings.MSU1)
sprintf(chip + strlen(chip), "+MSU-1");
sprintf(str, "%s%s", contents[(ROMType & 0xf) % 3], chip);
return (str);
}
const char * CMemory::Country (void)
{
switch (ROMRegion)
{
case 0: return("Japan");
case 1: return("USA and Canada");
case 2: return("Oceania, Europe and Asia");
case 3: return("Sweden");
case 4: return("Finland");
case 5: return("Denmark");
case 6: return("France");
case 7: return("Holland");
case 8: return("Spain");
case 9: return("Germany, Austria and Switzerland");
case 10: return("Italy");
case 11: return("Hong Kong and China");
case 12: return("Indonesia");
case 13: return("South Korea");
default: return("Unknown");
}
}
const char * CMemory::PublishingCompany (void)
{
if (CompanyId >= (int) (sizeof(nintendo_licensees) / sizeof(nintendo_licensees[0])) || CompanyId < 0)
return ("Unknown");
if (nintendo_licensees[CompanyId] == NULL)
return ("Unknown");
return (nintendo_licensees[CompanyId]);
}
void CMemory::MakeRomInfoText (char *romtext)
{
char temp[256];
romtext[0] = 0;
sprintf(temp, " Cart Name: %s", ROMName);
strcat(romtext, temp);
sprintf(temp, "\n Game Code: %s", ROMId);
strcat(romtext, temp);
sprintf(temp, "\n Contents: %s", KartContents());
strcat(romtext, temp);
sprintf(temp, "\n Map: %s", MapType());
strcat(romtext, temp);
sprintf(temp, "\n Speed: 0x%02X (%s)", ROMSpeed, (ROMSpeed & 0x10) ? "FastROM" : "SlowROM");
strcat(romtext, temp);
sprintf(temp, "\n Type: 0x%02X", ROMType);
strcat(romtext, temp);
sprintf(temp, "\n Size (calculated): %dMbits", CalculatedSize / 0x20000);
strcat(romtext, temp);
sprintf(temp, "\n Size (header): %s", Size());
strcat(romtext, temp);
sprintf(temp, "\n SRAM size: %s", StaticRAMSize());
strcat(romtext, temp);
sprintf(temp, "\nChecksum (calculated): 0x%04X", CalculatedChecksum);
strcat(romtext, temp);
sprintf(temp, "\n Checksum (header): 0x%04X", ROMChecksum);
strcat(romtext, temp);
sprintf(temp, "\n Complement (header): 0x%04X", ROMComplementChecksum);
strcat(romtext, temp);
sprintf(temp, "\n Video Output: %s", (ROMRegion > 12 || ROMRegion < 2) ? "NTSC 60Hz" : "PAL 50Hz");
strcat(romtext, temp);
sprintf(temp, "\n Revision: %s", Revision());
strcat(romtext, temp);
sprintf(temp, "\n Licensee: %s", PublishingCompany());
strcat(romtext, temp);
sprintf(temp, "\n Region: %s", Country());
strcat(romtext, temp);
sprintf(temp, "\n CRC32: 0x%08X", ROMCRC32);
strcat(romtext, temp);
}
// hack
bool8 CMemory::match_na (const char *str)
{
return (strcmp(ROMName, str) == 0);
}
bool8 CMemory::match_nn (const char *str)
{
return (strncmp(ROMName, str, strlen(str)) == 0);
}
bool8 CMemory::match_nc (const char *str)
{
return (strncasecmp(ROMName, str, strlen(str)) == 0);
}
bool8 CMemory::match_id (const char *str)
{
return (strncmp(ROMId, str, strlen(str)) == 0);
}
void CMemory::ApplyROMFixes (void)
{
Settings.BlockInvalidVRAMAccess = Settings.BlockInvalidVRAMAccessMaster;
if (Settings.DisableGameSpecificHacks)
return;
// APU timing hacks
if (match_na("CIRCUIT USA"))
Timings.APUSpeedup = 3;
S9xAPUTimingSetSpeedup(Timings.APUSpeedup);
// Other timing hacks
// The delay to sync CPU and DMA which Snes9x does not emulate.
// Some games need really severe delay timing...
if (match_na("BATTLE GRANDPRIX")) // Battle Grandprix
Timings.DMACPUSync = 20;
else if (match_na("KORYU NO MIMI ENG")) // Koryu no Mimi translation by rpgone)
{
// An infinite loop reads $4210 and checks NMI flag. This only works if LDA instruction executes before the NMI triggers,
// which doesn't work very well with s9x's default DMA timing.
Timings.DMACPUSync = 20;
}
if (Timings.DMACPUSync != 18)
printf("DMA sync: %d\n", Timings.DMACPUSync);
// SRAM initial value
if (match_na("HITOMI3"))
{
SRAMSize = 1;
SRAMMask = ((1 << (SRAMSize + 3)) * 128) - 1;
}
// SRAM value fixes
if (match_na("SUPER DRIFT OUT") || // Super Drift Out
match_na("SATAN IS OUR FATHER!") ||
match_na("S.F.S.95 della SerieA") ||
match_id("AACJ") || // Nichibutsu Arcade Classics
match_na("goemon 4")) // Ganbare Goemon Kirakira Douchuu
SNESGameFixes.SRAMInitialValue = 0x00;
// Additional game fixes by sanmaiwashi ...
// XXX: unnecessary?
if (match_na("SFX \xC5\xB2\xC4\xB6\xDE\xDD\xC0\xDE\xD1\xD3\xC9\xB6\xDE\xC0\xD8 1")) // SD Gundam Gaiden - Knight Gundam Monogatari
SNESGameFixes.SRAMInitialValue = 0x6b;
// others: BS and ST-01x games are 0x00.
// OAM hacks :(
// OAM hacks because we don't fully understand the behavior of the SNES.
// Totally wacky display in 2P mode...
// seems to need a disproven behavior, so we're definitely overlooking some other bug?
if (match_nn("UNIRACERS")) // Uniracers
{
SNESGameFixes.Uniracers = TRUE;
printf("Applied Uniracers hack.\n");
}
// Render Position
if (match_na("Sugoro Quest++"))
Timings.RenderPos = 128;
else if (match_na("FIREPOWER 2000") || match_na("SUPER SWIV"))
Timings.RenderPos = 32;
else if (match_na("DERBY STALLION 98"))
Timings.RenderPos = 128;
else if (match_na("AIR STRIKE PATROL") || match_na("DESERT FIGHTER"))
Timings.RenderPos = 128; // Just hides shadow
else if (match_na("FULL THROTTLE RACING"))
Timings.RenderPos = 128;
// From bsnes
else if (match_na("NHL '94") || match_na("NHL PROHOCKEY'94"))
Timings.RenderPos = 32;
else if (match_na("ADVENTURES OF FRANKEN") && Settings.PAL)
Timings.RenderPos = 32;
}
std::string CMemory::SafeString(std::string s, bool allow_jis /*=false*/)
{
std::string safe;
for (size_t i = 0; i < s.length(); i++)
{
if (s[i] >= 32 && s[i] < 127) // ASCII
safe += s[i];
else
if (allow_jis && ROMRegion == 0 && ((uint8)s[i] >= 0xa0 && (uint8)s[i] < 0xe0)) // JIS X 201 - Katakana
safe += s[i];
else
safe += '_';
}
return safe;
}
// BPS % UPS % IPS
// number decoding used for both BPS and UPS
static uint32 XPSdecode (const uint8 *data, unsigned &addr, unsigned size)
{
uint32 offset = 0, shift = 1;
while(addr < size) {
uint8 x = data[addr++];
offset += (x & 0x7f) * shift;
if(x & 0x80) break;
shift <<= 7;
offset += shift;
}
return offset;
}
static std::vector<uint8_t> ReadStreamUntilEOF(Stream *r)
{
const size_t max_buffer_size = 4096;
std::vector<uint8_t> data;
uint8_t buffer[max_buffer_size];
size_t total_size = 0;
size_t buffer_size = 0;
int value = 0;
while (value != EOF)
{
value = r->get_char();
if (value != EOF)
buffer[buffer_size++] = value;
if (buffer_size == max_buffer_size || (value == EOF && buffer_size > 0))
{
data.resize(data.size() + buffer_size);
memcpy(&data[total_size], buffer, buffer_size);
total_size += buffer_size;
buffer_size = 0;
}
}
return data;
}
//NOTE: UPS patches are *never* created against a headered ROM!
//this is per the UPS file specification. however, do note that it is
//technically possible for a non-compliant patcher to ignore this requirement.
//therefore, it is *imperative* that no emulator support such patches.
//thusly, we ignore the "long offset" parameter below. failure to do so would
//completely invalidate the purpose of UPS; which is to avoid header vs
//no-header patching errors that result in IPS patches having a 50/50 chance of
//being applied correctly.
static bool8 ReadUPSPatch (Stream *r, long, int32 &rom_size)
{
//Reader lacks size() and rewind(), so we need to read in the file to get its size
auto data_vector = ReadStreamUntilEOF(r);
uint8 *data = &data_vector[0];
uint32 size = data_vector.size();
//4-byte header + 1-byte input size + 1-byte output size + 4-byte patch CRC32 + 4-byte unpatched CRC32 + 4-byte patched CRC32
if(size < 18) return false; //patch is too small
uint32 addr = 4;
if (memcmp(data, "UPS1", 4) != 0) return false; //patch has an invalid header
uint32 patch_crc32 = caCRC32(data, size - 4); //don't include patch CRC32 itself in CRC32 calculation
uint32 rom_crc32 = caCRC32(Memory.ROM, rom_size);
uint32 px_crc32 = (data[size - 12] << 0) + (data[size - 11] << 8) + (data[size - 10] << 16) + (data[size - 9] << 24);
uint32 py_crc32 = (data[size - 8] << 0) + (data[size - 7] << 8) + (data[size - 6] << 16) + (data[size - 5] << 24);
uint32 pp_crc32 = (data[size - 4] << 0) + (data[size - 3] << 8) + (data[size - 2] << 16) + (data[size - 1] << 24);
if(patch_crc32 != pp_crc32) { return false; } //patch is corrupted
if(!Settings.IgnorePatchChecksum && (rom_crc32 != px_crc32) && (rom_crc32 != py_crc32)) return false; //patch is for a different ROM
uint32 px_size = XPSdecode(data, addr, size);
uint32 py_size = XPSdecode(data, addr, size);
uint32 out_size = ((uint32) rom_size == px_size) ? py_size : px_size;
if(out_size > CMemory::MAX_ROM_SIZE) { return false; } //applying this patch will overflow Memory.ROM buffer
//fill expanded area with 0x00s; so that XORing works as expected below.
//note that this is needed (and works) whether output ROM is larger or smaller than pre-patched ROM
for(unsigned i = min((uint32) rom_size, out_size); i < max((uint32) rom_size, out_size); i++) {
Memory.ROM[i] = 0x00;
}
uint32 relative = 0;
while(addr < size - 12) {
relative += XPSdecode(data, addr, size);
while(addr < size - 12) {
uint8 x = data[addr++];
Memory.ROM[relative++] ^= x;
if(!x) break;
}
}
rom_size = out_size;
uint32 out_crc32 = caCRC32(Memory.ROM, rom_size);
if(Settings.IgnorePatchChecksum
|| ((rom_crc32 == px_crc32) && (out_crc32 == py_crc32))
|| ((rom_crc32 == py_crc32) && (out_crc32 == px_crc32))
) {
Settings.IsPatched = 3;
return true;
} else {
//technically, reaching here means that patching has failed.
//we should return false, but unfortunately Memory.ROM has already
//been modified above and cannot be undone. to do this properly, we
//would need to make a copy of Memory.ROM, apply the patch, and then
//copy that back to Memory.ROM.
//
//however, the only way for this case to happen is if the UPS patch file
//itself is corrupted, which should be detected by the patch CRC32 check
//above anyway. errors due to the wrong ROM or patch file being used are
//already caught above.
fprintf(stderr, "WARNING: UPS patching appears to have failed.\nGame may not be playable.\n");
return true;
}
}
// header notes for UPS patches also apply to BPS
//
// logic taken from http://byuu.org/programming/bps and the accompanying source
//
static bool8 ReadBPSPatch (Stream *r, long, int32 &rom_size)
{
auto data_vector = ReadStreamUntilEOF(r);
uint8 *data = &data_vector[0];
uint32 size = data_vector.size();
/* 4-byte header + 1-byte input size + 1-byte output size + 1-byte metadata size
+ 4-byte unpatched CRC32 + 4-byte patched CRC32 + 4-byte patch CRC32 */
if(size < 19) return false; //patch is too small
uint32 addr = 4;
if (memcmp(data, "BPS1", 4) != 0) return false; //patch has an invalid header
uint32 patch_crc32 = caCRC32(data, size - 4); //don't include patch CRC32 itself in CRC32 calculation
uint32 rom_crc32 = caCRC32(Memory.ROM, rom_size);
uint32 source_crc32 = (data[size - 12] << 0) + (data[size - 11] << 8) + (data[size - 10] << 16) + (data[size - 9] << 24);
uint32 target_crc32 = (data[size - 8] << 0) + (data[size - 7] << 8) + (data[size - 6] << 16) + (data[size - 5] << 24);
uint32 pp_crc32 = (data[size - 4] << 0) + (data[size - 3] << 8) + (data[size - 2] << 16) + (data[size - 1] << 24);
if(patch_crc32 != pp_crc32) return false; //patch is corrupted
if(!Settings.IgnorePatchChecksum && rom_crc32 != source_crc32) return false; //patch is for a different ROM
XPSdecode(data, addr, size);
uint32 target_size = XPSdecode(data, addr, size);
uint32 metadata_size = XPSdecode(data, addr, size);
addr += metadata_size;
if(target_size > CMemory::MAX_ROM_SIZE) return false; //applying this patch will overflow Memory.ROM buffer
enum { SourceRead, TargetRead, SourceCopy, TargetCopy };
uint32 outputOffset = 0, sourceRelativeOffset = 0, targetRelativeOffset = 0;
std::vector<uint8_t> patched_rom_vector(target_size);
uint8 *patched_rom = &patched_rom_vector[0];
memset(patched_rom, 0, target_size);
while(addr < size - 12) {
uint32 length = XPSdecode(data, addr, size);
uint32 mode = length & 3;
length = (length >> 2) + 1;
switch((int)mode) {
case SourceRead:
while(length--) {
patched_rom[outputOffset] = Memory.ROM[outputOffset];
outputOffset++;
}
break;
case TargetRead:
while(length--) patched_rom[outputOffset++] = data[addr++];
break;
case SourceCopy:
case TargetCopy:
int32 offset = XPSdecode(data, addr, size);
bool negative = offset & 1;
offset >>= 1;
if(negative) offset = -offset;
if(mode == SourceCopy) {
sourceRelativeOffset += offset;
while(length--) patched_rom[outputOffset++] = Memory.ROM[sourceRelativeOffset++];
} else {
targetRelativeOffset += offset;
while(length--) patched_rom[outputOffset++] = patched_rom[targetRelativeOffset++];
}
break;
}
}
uint32 out_crc32 = caCRC32(patched_rom, target_size);
if(Settings.IgnorePatchChecksum || out_crc32 == target_crc32) {
memcpy(Memory.ROM, patched_rom, target_size);
rom_size = target_size;
Settings.IsPatched = 2;
return true;
} else {
fprintf(stderr, "WARNING: BPS patching failed.\nROM has not been altered.\n");
return false;
}
}
static long ReadInt (Stream *r, unsigned nbytes)
{
long v = 0;
while (nbytes--)
{
int c = r->get_char();
if (c == EOF)
return (-1);
v = (v << 8) | (c & 0xFF);
}
return (v);
}
static bool8 ReadIPSPatch (Stream *r, long offset, int32 &rom_size)
{
const int32 IPS_EOF = 0x00454F46l;
int32 ofs;
char fname[6];
fname[5] = 0;
for (int i = 0; i < 5; i++)
{
int c = r->get_char();
if (c == EOF)
return (0);
fname[i] = (char) c;
}
if (strncmp(fname, "PATCH", 5))
return (0);
for (;;)
{
long len, rlen;
int rchar;
ofs = ReadInt(r, 3);
if (ofs == -1)
return (0);
if (ofs == IPS_EOF)
break;
ofs -= offset;
len = ReadInt(r, 2);
if (len == -1)
return (0);
if (len)
{
if (ofs + len > CMemory::MAX_ROM_SIZE)
return (0);
while (len--)
{
rchar = r->get_char();
if (rchar == EOF)
return (0);
Memory.ROM[ofs++] = (uint8) rchar;
}
if (ofs > rom_size)
rom_size = ofs;
}
else
{
rlen = ReadInt(r, 2);
if (rlen == -1)
return (0);
rchar = r->get_char();
if (rchar == EOF)
return (0);
if (ofs + rlen > CMemory::MAX_ROM_SIZE)
return (0);
while (rlen--)
Memory.ROM[ofs++] = (uint8) rchar;
if (ofs > rom_size)
rom_size = ofs;
}
}
ofs = ReadInt(r, 3);
if (ofs != -1 && ofs - offset < rom_size)
rom_size = ofs - offset;
Settings.IsPatched = 1;
return (1);
}
#ifdef UNZIP_SUPPORT
static int unzFindExtension (unzFile &file, const char *ext, bool restart, bool print, bool allowExact)
{
unz_file_info info;
int port, l = strlen(ext), e = allowExact ? 0 : 1;
if (restart)
port = unzGoToFirstFile(file);
else
port = unzGoToNextFile(file);
while (port == UNZ_OK)
{
int len;
char name[132];
unzGetCurrentFileInfo(file, &info, name, 128, NULL, 0, NULL, 0);
len = strlen(name);
if (len >= l + e && name[len - l - 1] == '.' && strcasecmp(name + len - l, ext) == 0 && unzOpenCurrentFile(file) == UNZ_OK)
{
if (print)
printf("Using patch %s", name);
return (port);
}
port = unzGoToNextFile(file);
}
return (port);
}
#endif
void CMemory::CheckForAnyPatch(const char *rom_filename, bool8 header, int32 &rom_size)
{
Settings.IsPatched = false;
if (Settings.NoPatch)
return;
FSTREAM patch_file = NULL;
long offset = header ? 512 : 0;
int ret;
bool flag = false;
auto path = splitpath(rom_filename);
auto try_patch = [&](const char *type, std::string filename, bool8(*read_patch_func)(Stream * r, long offset, int32 &rom_size)) -> bool {
if ((patch_file = OPEN_FSTREAM(filename.c_str(), "rb")) != NULL)
{
printf("Using %s patch %s", type, filename.c_str());
Stream *s = new fStream(patch_file);
ret = read_patch_func(s, offset, rom_size);
s->closeStream();
if (ret)
{
printf("!\n");
flag = true;
return true;
}
else
printf(" failed!\n");
}
return false;
};
auto try_ips_sequence = [&](const char *pattern, enum s9x_getdirtype dirtype) -> bool {
for (int i = 0; i < 1000; i++)
{
char ips[9];
snprintf(ips, 9, pattern, i);
if (!try_patch("IPS", S9xGetFilename(ips, dirtype), ReadIPSPatch))
break;
}
return flag;
};
auto try_patch_type_sequence = [&](enum s9x_getdirtype dirtype) -> bool {
if (try_patch("BPS", S9xGetFilename(".bps", dirtype), ReadBPSPatch))
return true;
if (try_patch("UPS", S9xGetFilename(".ups", dirtype), ReadUPSPatch))
return true;
if (try_patch("IPS", S9xGetFilename(".ips", dirtype), ReadIPSPatch))
return true;
if (try_ips_sequence(".%03d.ips", dirtype))
return true;
if (try_ips_sequence(".ips%d", dirtype))
return true;
if (try_ips_sequence(".ip%d", dirtype))
return true;
return false;
};
if (try_patch_type_sequence(ROMFILENAME_DIR))
return;
#ifdef UNZIP_SUPPORT
if (path.ext_is(".zip"))
{
unzFile file = unzOpen(rom_filename);
if (file)
{
auto try_zip_patch = [&](const char *ext, bool8 (*read_patch_func)(Stream * r, long offset, int32 &rom_size)) -> bool {
if (unzFindExtension(file, ext) == UNZ_OK)
{
printf(" in %s", rom_filename);
Stream *s = new unzStream(file);
ret = read_patch_func(s, offset, rom_size);
delete s;
if (ret)
{
printf("!\n");
flag = true;
return true;
}
printf(" failed!\n");
}
return false;
};
auto try_zip_ips_sequence = [&](const char *pattern) {
for (int i = 0; i < 1000; i++)
{
char ips[8];
snprintf(ips, 8, pattern, i);
if (!try_zip_patch(ips, ReadIPSPatch))
break;
}
};
if (!flag)
try_zip_patch("bps", ReadBPSPatch);
if (!flag)
try_zip_patch("ups", ReadUPSPatch);
if (!flag)
try_zip_patch("ips", ReadIPSPatch);
if (!flag)
try_zip_ips_sequence("%03d.ips");
if (!flag)
try_zip_ips_sequence("ips%d");
if (!flag)
try_zip_ips_sequence("ip%d");
assert(unzClose(file) == UNZ_OK);
if (flag)
return;
}
}
// Mercurial Magic (MSU-1 distribution pack)
if (path.ext_is(".msu1")) // ROM was *NOT* loaded from a .msu1 pack
{
Stream *s = S9xMSU1OpenFile("patch.bps", TRUE);
if (s)
{
printf("Using BPS patch from msu1");
ret = ReadBPSPatch(s, offset, rom_size);
s->closeStream();
if (ret)
printf("!\n");
else
printf(" failed!\n");
}
}
#endif
if (try_patch_type_sequence(PATCH_DIR))
return;
}
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