fceux/ines.cpp

/* FCE Ultra - NES/Famicom Emulator
 *
 * Copyright notice for this file:
 *  Copyright (C) 1998 BERO 
 *  Copyright (C) 2002 Xodnizel
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#ifdef _USE_SHARED_MEMORY_
#include <windows.h>
#endif

#include "types.h"
#include "x6502.h"
#include "fceu.h"
#include "cart.h"
#include "ppu.h"

#define INESPRIV
#include "ines.h"
#include "unif.h"
#include "general.h"
#include "state.h"
#include "file.h"
#include "memory.h"
#include "crc32.h"
#include "md5.h"
#include "cheat.h"
#include "vsuni.h"

extern SFORMAT FCEUVSUNI_STATEINFO[];

//mbg merge 6/29/06 - these need to be global
uint8 *trainerpoo=0;
uint8 *ROM=NULL;
uint8 *VROM=NULL;
iNES_HEADER head ;


#ifdef _USE_SHARED_MEMORY_
HANDLE mapROM, mapVROM;
#endif

static CartInfo iNESCart;

uint8 iNESMirroring=0;
uint16 iNESCHRBankList[8]={0,0,0,0,0,0,0,0};
int32 iNESIRQLatch=0,iNESIRQCount=0;
uint8 iNESIRQa=0;

uint32 ROM_size=0;
uint32 VROM_size=0;
char LoadedRomFName[2048]; //mbg merge 7/17/06 added

static void iNESPower(void);
static int NewiNES_Init(int num);

void (*MapClose)(void);
void (*MapperReset)(void);

static int MapperNo=0;

/*  MapperReset() is called when the NES is reset(with the reset button).  
    Mapperxxx_init is called when the NES has been powered on.
*/


static DECLFR(TrainerRead)
{
 return(trainerpoo[A&0x1FF]);
}


void iNESGI(int h) //bbit edited: removed static keyword
{
 switch(h)
 {
  case GI_RESETM2:
		if(MapperReset)
		 MapperReset();
		if(iNESCart.Reset)
		 iNESCart.Reset();
		break;
  case GI_POWER:
                if(iNESCart.Power)
                 iNESCart.Power();
		if(trainerpoo)
		{
		 int x;
		 for(x=0;x<512;x++)
		 {
		  X6502_DMW(0x7000+x,trainerpoo[x]);
		  if(X6502_DMR(0x7000+x)!=trainerpoo[x])
		  {
                    SetReadHandler(0x7000,0x71FF,TrainerRead);
		    break;
		  }
		 }
		}
		break;
  case GI_CLOSE:
		{
                 FCEU_SaveGameSave(&iNESCart);

		 if(iNESCart.Close) iNESCart.Close();
#ifdef _USE_SHARED_MEMORY_
		 if(ROM)
		 {
			 if(mapROM)
			 {
				 UnmapViewOfFile(mapROM); 
				 CloseHandle(mapROM); 
				 ROM=0;
			 }
			 else
			 {
				 free(ROM);
				 ROM = NULL;
			 }
		 }
		 if(VROM)
		 {
			 if(mapVROM)
			 {
				 UnmapViewOfFile(mapVROM);
				 CloseHandle(mapVROM);
				 VROM=0;
			 }
			 else
			 {
				 free(VROM);
				 VROM = NULL;
			 }
		 }
#else
	 	 if(ROM) {free(ROM);ROM=0;}
		 if(VROM) {free(VROM);VROM=0;}
#endif
	         if(MapClose) MapClose();
		 if(trainerpoo) {FCEU_gfree(trainerpoo);trainerpoo=0;}
	        }
        	break;
     }
}

uint32 iNESGameCRC32=0;

struct CRCMATCH  {
	uint32 crc;
	char *name;
};

struct INPSEL {
	uint32 crc32;
	int input1;
	int input2;
	int inputfc;
};

/* This is mostly for my personal use.  So HA. */
static void SetInput(void)
{
 static struct INPSEL moo[]=
	{
         {0x3a1694f9,SI_GAMEPAD,SI_GAMEPAD,SIFC_4PLAYER},       /* Nekketsu Kakutou Densetsu */

   {0xc3c0811d,SI_GAMEPAD,SI_GAMEPAD,SIFC_OEKAKIDS},  /* The two "Oeka Kids" games */
   {0x9d048ea4,SI_GAMEPAD,SI_GAMEPAD,SIFC_OEKAKIDS},  /*           */

   {0xaf4010ea,SI_GAMEPAD,SI_POWERPADB,-1},  /* World Class Track Meet */
   {0xd74b2719,SI_GAMEPAD,SI_POWERPADB,-1},  /* Super Team Games */
   {0x61d86167,SI_GAMEPAD,SI_POWERPADB,-1},  /* Street Cop */
   {0x6435c095,SI_GAMEPAD,SI_POWERPADB,-1},      /* Short Order/Eggsplode */


   {0x47232739,SI_GAMEPAD,SI_GAMEPAD,SIFC_TOPRIDER},  /* Top Rider */

	 {0x48ca0ee1,SI_GAMEPAD,SI_GAMEPAD,SIFC_BWORLD},    /* Barcode World */
	 {0x9f8f200a,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERA}, /* Super Mogura Tataki!! - Pokkun Moguraa */
	 {0x9044550e,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERA}, /* Rairai Kyonshizu */
	 {0x2f128512,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERA}, /* Jogging Race */
	 {0x60ad090a,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERA}, /* Athletic World */

	 {0x8a12a7d9,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB}, /* Totsugeki Fuuun Takeshi Jou */
	 {0xea90f3e2,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB}, /* Running Stadium */
	 {0x370ceb65,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB}, /* Meiro Dai Sakusen */
	 // Bad dump? {0x69ffb014,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB}, /* Fuun Takeshi Jou 2 */
	 {0x6cca1c1f,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB}, /* Dai Undoukai */
	 {0x29de87af,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB},  /* Aerobics Studio */
         {0xbba58be5,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB},  /* Family Trainer: Manhattan Police */
	 {0xea90f3e2,SI_GAMEPAD,SI_GAMEPAD,SIFC_FTRAINERB},  /* Family Trainer:  Running Stadium */

	 {0xd9f45be9,SI_GAMEPAD,SI_GAMEPAD,SIFC_QUIZKING},  /* Gimme a Break ... */
	 {0x1545bd13,SI_GAMEPAD,SI_GAMEPAD,SIFC_QUIZKING},  /* Gimme a Break ... 2 */

	 {0x7b44fb2a,SI_GAMEPAD,SI_GAMEPAD,SIFC_MAHJONG},  /* Ide Yousuke Meijin no Jissen Mahjong 2 */
	 {0x9fae4d46,SI_GAMEPAD,SI_GAMEPAD,SIFC_MAHJONG},  /* Ide Yousuke Meijin no Jissen Mahjong */

	 {0x980be936,SI_GAMEPAD,SI_GAMEPAD,SIFC_HYPERSHOT}, /* Hyper Olympic */
	 {0x21f85681,SI_GAMEPAD,SI_GAMEPAD,SIFC_HYPERSHOT}, /* Hyper Olympic (Gentei Ban) */
	 {0x915a53a7,SI_GAMEPAD,SI_GAMEPAD,SIFC_HYPERSHOT}, /* Hyper Sports */
   {0xad9c63e2,SI_GAMEPAD,-1,SIFC_SHADOW},  /* Space Shadow */

   {0x24598791,-1,SI_ZAPPER,0},  /* Duck Hunt */
	 {0xff24d794,-1,SI_ZAPPER,0},   /* Hogan's Alley */
   {0xbeb8ab01,-1,SI_ZAPPER,0},  /* Gumshoe */
   {0xde8fd935,-1,SI_ZAPPER,0},  /* To the Earth */
   {0xedc3662b,-1,SI_ZAPPER,0},  /* Operation Wolf */
   {0x2a6559a1,-1,SI_ZAPPER,0},  /* Operation Wolf (J) */

   {0x23d17f5e,SI_GAMEPAD,SI_ZAPPER,0},  /* The Lone Ranger */
	 {0xb8b9aca3,-1,SI_ZAPPER,0},  /* Wild Gunman */
	 {0x5112dc21,-1,SI_ZAPPER,0},  /* Wild Gunman */
	 {0x4318a2f8,-1,SI_ZAPPER,0},  /* Barker Bill's Trick Shooting */
	 {0x5ee6008e,-1,SI_ZAPPER,0},  /* Mechanized Attack */
	 {0x3e58a87e,-1,SI_ZAPPER,0},  /* Freedom Force */
    {0xe9a7fe9e,-1,SI_MOUSE,0}, /* Educational Computer 2000 */ //mbg merge 7/17/06 added -- appears to be from newer MM build
   {0x851eb9be,SI_GAMEPAD,SI_ZAPPER,0},  /* Shooting Range */
   {0x74bea652,SI_GAMEPAD,SI_ZAPPER,0},  /* Supergun 3-in-1 */
	 {0x32fb0583,-1,SI_ARKANOID,0}, /* Arkanoid(NES) */
	 {0xd89e5a67,-1,-1,SIFC_ARKANOID}, /* Arkanoid (J) */
	 {0x0f141525,-1,-1,SIFC_ARKANOID}, /* Arkanoid 2(J) */

   {0x912989dc,-1,-1,SIFC_FKB},  /* Playbox BASIC */
   {0xf7606810,-1,-1,SIFC_FKB},  /* Family BASIC 2.0A */
   {0x895037bc,-1,-1,SIFC_FKB},  /* Family BASIC 2.1a */
   {0xb2530afc,-1,-1,SIFC_FKB},  /* Family BASIC 3.0 */
   {0x82f1fb96,-1,-1,SIFC_SUBORKB},  /* Subor 1.0 Russian */
   {0xabb2f974,-1,-1,SIFC_SUBORKB},  /* Study and Game 32-in-1 */
   {0xd5d6eac4,-1,-1,SIFC_SUBORKB},  /* Edu (As) */
   {0x589b6b0d,-1,-1,SIFC_SUBORKB},  /* SuporV20 */
     {0x5e073a1b,-1,-1,SIFC_SUBORKB},  /* Supor English (Chinese) */
    {0x8b265862,-1,-1,SIFC_SUBORKB},
   {0x41401c6d,-1,-1,SIFC_SUBORKB},  /* SuporV40 */
     {0x41ef9ac4,-1,-1,SIFC_SUBORKB},
     {0x368c19a8,-1,-1,SIFC_SUBORKB},   /* LIKO Study Cartridge */
   {0x543ab532,-1,-1,SIFC_SUBORKB},   /* LIKO Color Lines */
	 {0,-1,-1,-1}
	};
 int x=0;

 while(moo[x].input1>=0 || moo[x].input2>=0 || moo[x].inputfc>=0)
 {
  if(moo[x].crc32==iNESGameCRC32)
  {
   FCEUGameInfo->input[0]=moo[x].input1;
   FCEUGameInfo->input[1]=moo[x].input2;
   FCEUGameInfo->inputfc=moo[x].inputfc;
   break;
  }
  x++;
 }
}

#define INESB_INCOMPLETE  1
#define INESB_CORRUPT     2
#define INESB_HACKED      4

struct BADINF {
	uint64 md5partial;
	char *name;
	uint32 type;
};


static struct BADINF BadROMImages[]=
{
 #include "ines-bad.h"
};

void CheckBad(uint64 md5partial)
{
 int x;

 x=0;
 //printf("0x%llx\n",md5partial);
 while(BadROMImages[x].name)
 {
  if(BadROMImages[x].md5partial == md5partial)
  {
   FCEU_PrintError("The copy game you have loaded, \"%s\", is bad, and will not work properly on FCE Ultra.", BadROMImages[x].name);
   return;
  }
  x++;
 }

}


struct CHINF {
	uint32 crc32;	
	int32 mapper;
	int32 mirror;
};

static void CheckHInfo(void)
{
 /* ROM images that have the battery-backed bit set in the header that really
    don't have battery-backed RAM is not that big of a problem, so I'll
    treat this differently by only listing games that should have battery-backed RAM.

    Lower 64 bits of the MD5 hash.
 */

 static uint64 savie[]=
	{
   0x498c10dc463cfe95LL,  /* Battle Fleet */
   0x6917ffcaca2d8466LL,  /* Famista '90 */
         
         0xd63dcc68c2b20adcLL,    /* Final Fantasy J */
         0x012df596e2b31174LL,    /* Final Fantasy 1+2 */
         0xf6b359a720549ecdLL,    /* Final Fantasy 2 */
         0x5a30da1d9b4af35dLL,    /* Final Fantasy 3 */

   0x2ee3417ba8b69706LL,  /* Hydlide 3*/

   0xebbce5a54cf3ecc0LL,  /* Justbreed */

   0x6a858da551ba239eLL,  /* Kaijuu Monogatari */
   0xa40666740b7d22feLL,  /* Mindseeker */

         0x77b811b2760104b9LL,    /* Mouryou Senki Madara */

   0x11b69122efe86e8cLL,  /* RPG Jinsei Game */

   0xa70b495314f4d075LL,  /* Ys 3 */


   0xc04361e499748382LL,  /* AD&D Heroes of the Lance */
   0xb72ee2337ced5792LL,  /* AD&D Hillsfar */
   0x2b7103b7a27bd72fLL,  /* AD&D Pool of Radiance */

 	 0x854d7947a3177f57LL,    /* Crystalis */

   0xb0bcc02c843c1b79LL,  /* DW */
   0x4a1f5336b86851b6LL,  /* DW */

   0x2dcf3a98c7937c22LL,  /* DW 2 */
   0x733026b6b72f2470LL,  /* Dw 3 */
   0x98e55e09dfcc7533LL,  /* DW 4*/
   0x8da46db592a1fcf4LL,  /* Faria */
   0x91a6846d3202e3d6LL,  /* Final Fantasy */
   0xedba17a2c4608d20LL,  /* ""    */

         0x94b9484862a26cbaLL,    /* Legend of Zelda */
         0x04a31647de80fdabLL,    /*      ""      */
         
         0x9aa1dc16c05e7de5LL,    /* Startropics */
         0x1b084107d0878bd0LL,    /* Startropics 2*/

         0x836c0ff4f3e06e45LL,    /* Zelda 2 */

   0      /* Abandon all hope if the game has 0 in the lower 64-bits of its MD5 hash */
	};

 static struct CHINF moo[]=
	{
  #include "ines-correct.h"
	};
 int tofix=0;
 int x;
 uint64 partialmd5=0;

 for(x=0;x<8;x++)
 {
  partialmd5 |= (uint64)iNESCart.MD5[15-x] << (x*8);
  //printf("%16llx\n",partialmd5);
 }
 CheckBad(partialmd5);

 x=0;

 do
 {
  if(moo[x].crc32==iNESGameCRC32)
  {
   if(moo[x].mapper>=0)
   {
    if(moo[x].mapper&0x800 && VROM_size)
    {
     VROM_size=0;
#ifdef _USE_SHARED_MEMORY_
	 if(mapVROM)
	 {
		UnmapViewOfFile(mapVROM);
		CloseHandle(mapVROM);
	 }
	 else
	 {
		 free(VROM);
	 }
#else
	 free(VROM);
#endif
     VROM=0;
     tofix|=8;
    }
    if(MapperNo!=(moo[x].mapper&0xFF))
    {
     tofix|=1;
     MapperNo=moo[x].mapper&0xFF;
    }
   }
   if(moo[x].mirror>=0)
   {
    if(moo[x].mirror==8)
    {
     if(Mirroring==2)  /* Anything but hard-wired(four screen). */
     {
      tofix|=2;
      Mirroring=0;
     }
    }
    else if(Mirroring!=moo[x].mirror)
    {
     if(Mirroring!=(moo[x].mirror&~4))
      if((moo[x].mirror&~4)<=2)  /* Don't complain if one-screen mirroring
				   needs to be set(the iNES header can't
				   hold this information).
				*/
       tofix|=2;
     Mirroring=moo[x].mirror;
    }
   }
   break;
  }
  x++;
 } while(moo[x].mirror>=0 || moo[x].mapper>=0);

 x=0;
 while(savie[x] != 0)
 {
  if(savie[x] == partialmd5)
  {
   if(!(head.ROM_type&2))
   {
    tofix|=4;
    head.ROM_type|=2;
   }
  }
  x++;
 }

 /* Games that use these iNES mappers tend to have the four-screen bit set
    when it should not be.
 */
 if((MapperNo==118 || MapperNo==24 || MapperNo==26) && (Mirroring==2))
 {
  Mirroring=0;
  tofix|=2;
 }

 /* Four-screen mirroring implicitly set. */
 if(MapperNo==99)
  Mirroring=2;   

 if(tofix)
 {
  char gigastr[768];
  strcpy(gigastr,"The iNES header contains incorrect information.  For now, the information will be corrected in RAM.  ");
  if(tofix&1)
   sprintf(gigastr+strlen(gigastr),"The mapper number should be set to %d.  ",MapperNo);
  if(tofix&2)
  {
   char *mstr[3]={"Horizontal","Vertical","Four-screen"};
   sprintf(gigastr+strlen(gigastr),"Mirroring should be set to \"%s\".  ",mstr[Mirroring&3]);
  }
  if(tofix&4)
   strcat(gigastr,"The battery-backed bit should be set.  ");  
  if(tofix&8)
   strcat(gigastr,"This game should not have any CHR ROM.  ");
  strcat(gigastr,"\n");
  FCEU_printf("%s",gigastr);
 }
}

typedef struct {
	int mapper;
	void (*init)(CartInfo *);
} NewMI;

int iNESLoad(const char *name, FCEUFILE *fp, int OverwriteVidMode)
{
        struct md5_context md5;

	if(FCEU_fread(&head,1,16,fp)!=16)
 	 return 0;

        if(memcmp(&head,"NES\x1a",4))
         return 0;

	memset(&iNESCart,0,sizeof(iNESCart));

        if(!memcmp((char *)(&head)+0x7,"DiskDude",8))
        {
         memset((char *)(&head)+0x7,0,0x9);
        }

        if(!memcmp((char *)(&head)+0x7,"demiforce",9))
        {
         memset((char *)(&head)+0x7,0,0x9);
        }

        if(!memcmp((char *)(&head)+0xA,"Ni03",4))
        {
         if(!memcmp((char *)(&head)+0x7,"Dis",3))
          memset((char *)(&head)+0x7,0,0x9);
         else
          memset((char *)(&head)+0xA,0,0x6);
        }

//  int ROM_size=0;
        if(!head.ROM_size)
	{
//   FCEU_PrintError("No PRG ROM!");
//   return(0);
   ROM_size=256;
         //head.ROM_size++;
	}
  else
   ROM_size=head.ROM_size;

//    ROM_size = head.ROM_size;
        VROM_size = head.VROM_size;
	ROM_size=uppow2(ROM_size);

        if(VROM_size)
	 VROM_size=uppow2(VROM_size);

        MapperNo = (head.ROM_type>>4);
        MapperNo|=(head.ROM_type2&0xF0);
        Mirroring = (head.ROM_type&1);

	if(head.ROM_type&8) Mirroring=2;

#ifdef _USE_SHARED_MEMORY_
	mapROM = CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE, 0, ROM_size<<14,"fceu.ROM");
	if(mapROM == NULL || GetLastError() == ERROR_ALREADY_EXISTS)
	{
		mapROM = NULL;
		CloseHandle(mapROM);

		if(!(ROM=(uint8 *)FCEU_malloc(ROM_size<<14)))
			return 0;

		if(VROM_size)
		{
			if(!(VROM=(uint8 *)FCEU_malloc(VROM_size<<13)))
			{
				free(ROM);
				ROM = NULL;
				return 0;
			}
		}
	}
	else
	{
		ROM   = (uint8 *)MapViewOfFile(mapROM, FILE_MAP_WRITE, 0, 0, 0);
		if( !ROM ) return 0;

		if(VROM_size)
		{
			mapVROM = CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE, 0, VROM_size<<13,"fceu.VROM");
			VROM   = (uint8 *)MapViewOfFile(mapVROM, FILE_MAP_WRITE, 0, 0, 0);
			if( !VROM ) 
			{
				UnmapViewOfFile(mapROM);
				CloseHandle(mapROM);
				return 0;
			}
		}
	}
#else
	if(!(ROM=(uint8 *)FCEU_malloc(ROM_size<<14)))
		return 0;
		
	if(VROM_size)
	{
		if(!(VROM=(uint8 *)FCEU_malloc(VROM_size<<13)))
			{
			free(ROM);
			return 0;
		}
	}
#endif
	memset(ROM,0xFF,ROM_size<<14);
	if(VROM_size) memset(VROM,0xFF,VROM_size<<13);
	if(head.ROM_type&4)   /* Trainer */
	{
	 trainerpoo=(uint8 *)FCEU_gmalloc(512);
 	 FCEU_fread(trainerpoo,512,1,fp);
	}

	ResetCartMapping();
	ResetExState(0,0);

	SetupCartPRGMapping(0,ROM,ROM_size*0x4000,0);
        SetupCartPRGMapping(1,WRAM,8192,1);

        FCEU_fread(ROM,0x4000,head.ROM_size,fp);

	if(VROM_size)
	 FCEU_fread(VROM,0x2000,head.VROM_size,fp);

        md5_starts(&md5);  
        md5_update(&md5,ROM,ROM_size<<14);

	iNESGameCRC32=CalcCRC32(0,ROM,ROM_size<<14);

	if(VROM_size)
	{
	 iNESGameCRC32=CalcCRC32(iNESGameCRC32,VROM,VROM_size<<13);
         md5_update(&md5,VROM,VROM_size<<13);
	}
	md5_finish(&md5,iNESCart.MD5);
	memcpy(FCEUGameInfo->MD5,iNESCart.MD5,sizeof(iNESCart.MD5));

	iNESCart.CRC32=iNESGameCRC32;

        FCEU_printf(" PRG ROM:  %3d x 16KiB\n CHR ROM:  %3d x  8KiB\n ROM CRC32:  0x%08lx\n",
		head.ROM_size,head.VROM_size,iNESGameCRC32);

        {
         int x;
         FCEU_printf(" ROM MD5:  0x");
         for(x=0;x<16;x++) 
          FCEU_printf("%02x",iNESCart.MD5[x]);
         FCEU_printf("\n");
        }
	FCEU_printf(" Mapper:  %d\n Mirroring: %s\n", MapperNo,Mirroring==2?"None(Four-screen)":Mirroring?"Vertical":"Horizontal");
        if(head.ROM_type&2) FCEU_printf(" Battery-backed.\n");
        if(head.ROM_type&4) FCEU_printf(" Trained.\n");

	SetInput();
	CheckHInfo();
	{
	 int x;
	 uint64 partialmd5=0;

	 for(x=0;x<8;x++)
	 {
	  partialmd5 |= (uint64)iNESCart.MD5[7-x] << (x*8);
	 } 

	 FCEU_VSUniCheck(partialmd5, &MapperNo, &Mirroring);
	}
	/* Must remain here because above functions might change value of
	   VROM_size and free(VROM).
	*/
	if(VROM_size)
         SetupCartCHRMapping(0,VROM,VROM_size*0x2000,0);

        if(Mirroring==2)
         SetupCartMirroring(4,1,ExtraNTARAM);
        else if(Mirroring>=0x10)
	 SetupCartMirroring(2+(Mirroring&1),1,0);
	else
         SetupCartMirroring(Mirroring&1,(Mirroring&4)>>2,0);
	
	iNESCart.battery=(head.ROM_type&2)?1:0;
	iNESCart.mirror=Mirroring;

	//if(MapperNo != 18) {
  //  if(ROM) free(ROM);
  //  if(VROM) free(VROM);
  //  ROM=VROM=0;
  //  return(0);
	// }

	if(NewiNES_Init(MapperNo))
	{

	}
	else
	{
	 iNESCart.Power=iNESPower;
         if(head.ROM_type&2)
	 {
	  iNESCart.SaveGame[0]=WRAM;
	  iNESCart.SaveGameLen[0]=8192;
	 }
	}
	FCEU_LoadGameSave(&iNESCart);

	strcpy(LoadedRomFName,name); //bbit edited: line added
	GameInterface=iNESGI;
	FCEU_printf("\n");

	// since apparently the iNES format doesn't store this information,
	// guess if the settings should be PAL or NTSC from the ROM name
	// TODO: MD5 check against a list of all known PAL games instead?
	if(OverwriteVidMode)
	{
		if(strstr(name,"(E)") || strstr(name,"(e)")
		|| strstr(name,"(F)") || strstr(name,"(f)")
		|| strstr(name,"(G)") || strstr(name,"(g)")
		|| strstr(name,"(I)") || strstr(name,"(i)"))
			FCEUI_SetVidSystem(1);
		else
			FCEUI_SetVidSystem(0);
	}
	return 1;
}


//bbit edited: the whole function below was added
int iNesSave(){
	FILE *fp;
	char name[2048];

	if(FCEUGameInfo->type != GIT_CART)return 0;
	if(GameInterface!=iNESGI)return 0;

	strcpy(name,LoadedRomFName);
	if (strcmp(name+strlen(name)-4,".nes") != 0) { //para edit
		strcat(name,".nes");
	}

	fp = fopen(name,"wb");

	if(fwrite(&head,1,16,fp)!=16)return 0;

	if(head.ROM_type&4) 	/* Trainer */
	{
 	 fwrite(trainerpoo,512,1,fp);
	}

	fwrite(ROM,0x4000,head.ROM_size,fp);

	if(head.VROM_size)fwrite(VROM,0x2000,head.VROM_size,fp);
	fclose(fp);

	return 1;
}

//para edit: added function below
char *iNesShortFName() {
	char *ret;

	if (!(ret = strrchr(LoadedRomFName,'\\'))) {
		if (!(ret = strrchr(LoadedRomFName,'/'))) return 0;
	}
	return ret+1;
}

void FASTAPASS(2) VRAM_BANK1(uint32 A, uint8 V)
{
 V&=7;
 PPUCHRRAM|=(1<<(A>>10));
 CHRBankList[(A)>>10]=V;
 VPage[(A)>>10]=&CHRRAM[V<<10]-(A);
}
 
void FASTAPASS(2) VRAM_BANK4(uint32 A, uint32 V)
{
 V&=1;
 PPUCHRRAM|=(0xF<<(A>>10));
 CHRBankList[(A)>>10]=(V<<2);
 CHRBankList[((A)>>10)+1]=(V<<2)+1;
 CHRBankList[((A)>>10)+2]=(V<<2)+2;
 CHRBankList[((A)>>10)+3]=(V<<2)+3;
 VPage[(A)>>10]=&CHRRAM[V<<10]-(A);
}
void FASTAPASS(2) VROM_BANK1(uint32 A,uint32 V)
{
 setchr1(A,V);
 CHRBankList[(A)>>10]=V;
}
 
void FASTAPASS(2) VROM_BANK2(uint32 A,uint32 V)
{
 setchr2(A,V);
 CHRBankList[(A)>>10]=(V<<1);
 CHRBankList[((A)>>10)+1]=(V<<1)+1;
}

void FASTAPASS(2) VROM_BANK4(uint32 A, uint32 V)
{
 setchr4(A,V);
 CHRBankList[(A)>>10]=(V<<2);
 CHRBankList[((A)>>10)+1]=(V<<2)+1;
 CHRBankList[((A)>>10)+2]=(V<<2)+2;
 CHRBankList[((A)>>10)+3]=(V<<2)+3;
}

void FASTAPASS(1) VROM_BANK8(uint32 V)
{
 setchr8(V);
 CHRBankList[0]=(V<<3);
 CHRBankList[1]=(V<<3)+1;
 CHRBankList[2]=(V<<3)+2;
 CHRBankList[3]=(V<<3)+3;
 CHRBankList[4]=(V<<3)+4;
 CHRBankList[5]=(V<<3)+5;
 CHRBankList[6]=(V<<3)+6;
 CHRBankList[7]=(V<<3)+7;
}

void FASTAPASS(2) ROM_BANK8(uint32 A, uint32 V)
{
 setprg8(A,V);
 if(A>=0x8000)
  PRGBankList[((A-0x8000)>>13)]=V;
}
 
void FASTAPASS(2) ROM_BANK16(uint32 A, uint32 V)
{
 setprg16(A,V);
 if(A>=0x8000) 
 {
  PRGBankList[((A-0x8000)>>13)]=V<<1;
  PRGBankList[((A-0x8000)>>13)+1]=(V<<1)+1;
 }
} 

void FASTAPASS(1) ROM_BANK32(uint32 V)
{
 setprg32(0x8000,V);
 PRGBankList[0]=V<<2;
 PRGBankList[1]=(V<<2)+1;
 PRGBankList[2]=(V<<2)+2;
 PRGBankList[3]=(V<<2)+3;
}

void FASTAPASS(1) onemir(uint8 V)
{
	if(Mirroring==2) return;
        if(V>1)
         V=1;
	Mirroring=0x10|V;
	setmirror(MI_0+V);
}

void FASTAPASS(1) MIRROR_SET2(uint8 V)
{
	if(Mirroring==2) return;
	Mirroring=V;
	setmirror(V);
}

void FASTAPASS(1) MIRROR_SET(uint8 V)
{
	if(Mirroring==2) return;
	V^=1;
	Mirroring=V;
	setmirror(V);
}

static void NONE_init(void)
{
        ROM_BANK16(0x8000,0);
        ROM_BANK16(0xC000,~0);

        if(VROM_size) 
	 VROM_BANK8(0);
        else
	 setvram8(CHRRAM);
}
void (*MapInitTab[256])(void)=
{
    0,
    0,
    0, //Mapper2_init,
    0, //Mapper3_init,
    0,
    0,
    Mapper6_init,
    0,//Mapper7_init,
    Mapper8_init,
    Mapper9_init,
    Mapper10_init,
    0, //Mapper11_init,
    0, 
    0, //Mapper13_init,
    0,
    Mapper15_init,
    Mapper16_init,
    Mapper17_init,
    Mapper18_init,
    0,
    0,
    Mapper21_init,
    Mapper22_init,
    Mapper23_init,
    Mapper24_init,
    Mapper25_init,
    Mapper26_init,
    Mapper27_init,
    0,
    0,
    0,
    0,
    Mapper32_init,
    Mapper33_init,
    Mapper34_init,
    0,
    0,
    0,
    0,
    0,
    Mapper40_init,
    Mapper41_init,
    Mapper42_init,
    0, //Mapper43_init,
    0,
    0,
    Mapper46_init,
    0,
    Mapper48_init,
    0,
    Mapper50_init,
    Mapper51_init,
    0,
    0,
    0,
    0,
    0,
    0,//    Mapper57_init,
    0,//    Mapper58_init,
    Mapper59_init,
    0,// Mapper60_init,
    Mapper61_init,
    Mapper62_init,
    0,
    Mapper64_init,
    Mapper65_init,
    0,//Mapper66_init,
    Mapper67_init,
    Mapper68_init,
    Mapper69_init,
    0,//Mapper70_init,
    Mapper71_init,
    Mapper72_init,
    Mapper73_init,
    0,
    Mapper75_init,
    Mapper76_init,
    Mapper77_init,
    0, //Mapper78_init,
    Mapper79_init,
    Mapper80_init,
    0,
    Mapper82_init,
    Mapper83_init,
    0,
    Mapper85_init,
    Mapper86_init,
    0, //Mapper87_init,
    0, //Mapper88_init,
    Mapper89_init,
    0,
    Mapper91_init,
    Mapper92_init,
    0, //Mapper93_init,
    0, //Mapper94_init,
    0,
    Mapper96_init,
    Mapper97_init,
    0,
    Mapper99_init,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0, //Mapper107_init,
    0,
    0,
    0,
    0,
    0,
    0, // Mapper113_init,
    0,
    0,
    0, //Mapper116_init,
    0, //Mapper117_init,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0, //Mapper140_init,
    0,
    0,
    0,
    0, //Mapper144_init,
    0,
    0,
    0,
    0,
    0,
    0,
    Mapper151_init,
    0, //Mapper152_init,
    Mapper153_init,
    0, //Mapper154_init,
    0,
    Mapper156_init,
    Mapper157_init,
    0, //Mapper158_init, removed
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    Mapper166_init,
    Mapper167_init,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0, //Mapper180_init,
    0,
    0,
    0,
    0, //Mapper184_init,
    0, //Mapper185_init,
    0,
    0,
    0,
    0, //Mapper189_init,
    0,
    0, //Mapper191_init,
    0,
    Mapper193_init,
    0,
    0,
    0,
    0,
    0,
    0,
    0, //Mapper200_init,
    Mapper201_init,
    Mapper202_init,
    Mapper203_init,
    Mapper204_init,
    0,
    0,
    Mapper207_init,
    0,
    0,
    0,
    0, //Mapper211_init,
    Mapper212_init,
    Mapper213_init,
    Mapper214_init,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    Mapper225_init,
    0, //Mapper226_init,
    Mapper227_init,
    Mapper228_init,
    Mapper229_init,
    Mapper230_init,
    Mapper231_init,
    Mapper232_init,
    0,
    Mapper234_init,
    0, //Mapper235_init,
    0,
    0,
    0,
    0,
    0, //Mapper240_init,
    Mapper241_init,
    Mapper242_init,
    0,
    Mapper244_init,
    0,
    Mapper246_init,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    0,
    Mapper255_init
};

static DECLFW(BWRAM)
{
	WRAM[A-0x6000]=V;
}

static DECLFR(AWRAM)
{
	return WRAM[A-0x6000];
}

#ifdef DEBUG_MAPPER
static DECLFW(WriteHandler)
{
 FCEU_printf("$%04x:$%02x\n",A,V);
}
#endif

void (*MapStateRestore)(int version);
void iNESStateRestore(int version)
{
 int x;
 
 if(!MapperNo) return;

 for(x=0;x<4;x++)
  setprg8(0x8000+x*8192,PRGBankList[x]);

 if(VROM_size)
  for(x=0;x<8;x++) 
    setchr1(0x400*x,CHRBankList[x]);

if(0) switch(Mirroring)
 {
   case 0:setmirror(MI_H);break;
   case 1:setmirror(MI_V);break;
   case 0x12:
   case 0x10:setmirror(MI_0);break;
   case 0x13:
   case 0x11:setmirror(MI_1);break;
 }
 if(MapStateRestore) MapStateRestore(version);
}

static void iNESPower(void)
{
	int x;
	int type=MapperNo;
	
	SetReadHandler(0x8000,0xFFFF,CartBR);
	GameStateRestore=iNESStateRestore;
	MapClose=0;
	MapperReset=0;
	MapStateRestore=0;

	setprg8r(1,0x6000,0);
	SetReadHandler(0x6000,0x7FFF,AWRAM);
	SetWriteHandler(0x6000,0x7FFF,BWRAM);
	FCEU_CheatAddRAM(8,0x6000,WRAM);
/*
    #ifdef DEBUG_MAPPER
    if(type==0) SetWriteHandler(0x4020,0xFFFF,WriteHandler);
    #endif
*/
	/* This statement represents atrocious code.  I need to rewrite
	   all of the iNES mapper code... */
	IRQCount=IRQLatch=IRQa=0;
	if(head.ROM_type&2)
		memset(GameMemBlock+8192,0,131072-8192);
	else
		memset(GameMemBlock,0,131072);
	
	NONE_init();
	ResetExState(0,0);

	if(FCEUGameInfo->type == GIT_VSUNI)
		AddExState(FCEUVSUNI_STATEINFO, ~0, 0, 0);

	AddExState(WRAM, 8192, 0, "WRAM");
	
	if(type==19 || type==6 || type==69 || type==85 || type==96)
         AddExState(MapperExRAM, 32768, 0, "MEXR");
    if((!VROM_size || type==6 || type==19) && (type!=13 && type!=96))
         AddExState(CHRRAM, 8192, 0, "CHRR");
        if(head.ROM_type&8)
         AddExState(ExtraNTARAM, 2048, 0, "EXNR");

	/* Exclude some mappers whose emulation code handle save state stuff 
	   themselves. */
	if(type && type!=13 && type!=96)
	{
         AddExState(mapbyte1, 32, 0, "MPBY");
         AddExState(&Mirroring, 1, 0, "MIRR");
         AddExState(&IRQCount, 4, 1, "IRQC");
         AddExState(&IRQLatch, 4, 1, "IQL1");
         AddExState(&IRQa, 1, 0, "IRQA");
         AddExState(PRGBankList, 4, 0, "PBL");
         for(x=0;x<8;x++)
         {
          char tak[8];
          sprintf(tak,"CBL%d",x);         
          AddExState(&CHRBankList[x], 2, 1,tak);
         }
	}

        if(MapInitTab[type]) MapInitTab[type]();
        else if(type)
        {
         FCEU_PrintError("iNES mapper #%d is not supported at all.",type);
        }
}


typedef struct {
           int number;   
           void (*init)(CartInfo *);
} BMAPPING;
/*
static BMAPPING bmap[] = {
    {1,   Mapper1_Init},
    {2,   UNROM_Init},
    {3,   CNROM_Init},
    {4,   Mapper4_Init},
    {5,   Mapper5_Init},
    {12,  Mapper12_Init},
    {13,  CPROM_Init},
    {19,  Mapper19_Init},
    {44,  Mapper44_Init},
    {45,  Mapper45_Init},
    {47,  Mapper47_Init},
    {49,  Mapper49_Init},
    {52,  Mapper52_Init},
    {74,  Mapper74_Init},
    {90,  Mapper90_Init},
    {95,  Mapper95_Init},
    {105, Mapper105_Init},
    {112, Mapper112_Init},
    {114, Mapper114_Init},
        {115, Mapper115_Init},
        {116, Mapper116_Init},
	{118, Mapper118_Init},
    {119, Mapper119_Init},
    {133, SA72008_Init},
    {137, S8259D_Init},
    {138, S8259B_Init},
    {139, S8259C_Init},
    {141, S8259A_Init},
    {143, TCA01_Init},
    {145, SA72007_Init},
    {146, SA0161M_Init},
    {147, TCU01_Init},
    {148, SA0037_Init},
    {149, SA0036_Init},
    {150, S74LS374N_Init},
	{155, Mapper155_Init},
    {160, Mapper90_Init},
    {163, Mapper163_Init},
	{164, Mapper164_Init},
    {165, Mapper165_Init},
    {182, Mapper182_Init},
    {183, Mapper183_Init},
    {186, Mapper186_Init},
        {187, Mapper187_Init},
	{188, Mapper188_Init},
    {191, Mapper191_Init},
    {205, Mapper205_Init},
    {206, DEIROM_Init},
        {208, Mapper208_Init},
    {209, Mapper209_Init},
	{210, Mapper210_Init},
    {215, Mapper215_Init},
    {216, Mapper216_Init},
    {217, Mapper217_Init},
    {243, S74LS374NA_Init},
        {245, Mapper245_Init},
        {249, Mapper249_Init},
        {250, Mapper250_Init},
    {254, Mapper254_Init},
    {  0,        0}
};
*/
static BMAPPING bmap[] = {
    {0,   NROM_Init},
    {1,   Mapper1_Init},
    {2,   UNROM_Init},
    {3,   CNROM_Init},
    {4,   Mapper4_Init},
    {5,   Mapper5_Init},
    {7,   ANROM_Init},
    {11,  Mapper11_Init},
    {12,  Mapper12_Init},
    {13,  CPROM_Init},
    {19,  Mapper19_Init},
    {37,  Mapper37_Init},
    {43,  Mapper43_Init},
    {44,  Mapper44_Init},
    {45,  Mapper45_Init},
    {47,  Mapper47_Init},
    {49,  Mapper49_Init},
    {52,  Mapper52_Init},
    {57,  Mapper57_Init},
    {58,  BMCGK192_Init},
    {60,  BMCD1038_Init},
    {66,  MHROM_Init},
    {70,  Mapper70_Init},
    {74,  Mapper74_Init},
    {78,  Mapper78_Init},
    {87,  Mapper87_Init},
    {88,  Mapper88_Init},
    {90,  Mapper90_Init},
    {93,  SUNSOFT_UNROM_Init},
    {94,  Mapper94_Init},
    {95,  Mapper95_Init},
    {105, Mapper105_Init},
    {107, Mapper107_Init},
    {112, Mapper112_Init},
    {113, Mapper113_Init},
    {114, Mapper114_Init},
    {115, Mapper115_Init},
    {116, Mapper116_Init},
    {117, Mapper117_Init},
    {118, TKSROM_Init},
    {119, Mapper119_Init},
    {132, UNL22211_Init},
    {133, SA72008_Init},
    {137, S8259D_Init},
    {138, S8259B_Init},
    {139, S8259C_Init},
    {140, Mapper140_Init},
    {141, S8259A_Init},
    {143, TCA01_Init},
    {144, Mapper144_Init},
    {145, SA72007_Init},
    {146, SA0161M_Init},
    {147, TCU01_Init},
    {148, SA0037_Init},
    {149, SA0036_Init},
    {150, S74LS374N_Init},
    {152, Mapper152_Init},
    {154, Mapper154_Init},
    {155, Mapper155_Init},
    {160, Mapper90_Init},
    {163, Mapper163_Init},
    {164, Mapper164_Init},
    {165, Mapper165_Init},
    {180, Mapper180_Init},
    {181, Mapper181_Init},
    {182, Mapper182_Init},
    {183, Mapper183_Init},
    {184, Mapper184_Init},
    {185, Mapper185_Init},
    {186, Mapper186_Init},
    {187, Mapper187_Init},
    {188, Mapper188_Init},
    {189, Mapper189_Init},
    {191, Mapper191_Init},
    {192, Mapper192_Init},
    {194, Mapper194_Init},
    {195, Mapper195_Init},
    {198, Mapper198_Init},
    {199, Mapper199_Init},
    {200, Mapper200_Init},
    {205, Mapper205_Init},
    {206, DEIROM_Init},
    {208, Mapper208_Init},
    {209, Mapper209_Init},
    {210, Mapper210_Init},
    {211, Mapper211_Init},
    {215, Mapper215_Init},
    {216, Mapper216_Init},
    {217, Mapper217_Init},

    {218, UNLA9711_Init},
    {219, UNLSL1632_Init},
    {220, UNLCN22M_Init},
    {221, BMCFK23C_Init},

    {222, Mapper222_Init},
    {226, Mapper226_Init},
    {235, Mapper235_Init},
    {240, Mapper240_Init},
    {243, S74LS374NA_Init},
    {245, Mapper245_Init},
    {249, Mapper249_Init},
    {250, Mapper250_Init},
    {254, Mapper254_Init},
    {  0,        0}
};

static int NewiNES_Init(int num)
{
 BMAPPING *tmp=bmap;

 if(FCEUGameInfo->type == GIT_VSUNI)
  AddExState(FCEUVSUNI_STATEINFO, ~0, 0, 0);

 while(tmp->init)
 {
  if(num==tmp->number)
  {
   UNIFchrrama=0; // need here for compatibility with UNIF mapper code
   if(!VROM_size)
   {
    int CHRRAMSize;
    if(num==13)
	{
		CHRRAMSize=16384;
	}
    else
	{
		CHRRAMSize=8192;
	}
#ifdef _USE_SHARED_MEMORY_
	mapVROM = CreateFileMapping((HANDLE)0xFFFFFFFF,NULL,PAGE_READWRITE, 0, CHRRAMSize,"fceu.VROM");
	if(mapVROM == NULL || GetLastError() == ERROR_ALREADY_EXISTS)
	{
		CloseHandle(mapVROM);
		mapVROM = NULL;
		VROM=(uint8 *)malloc(CHRRAMSize);
	}
	else
	{
		VROM   = (uint8 *)MapViewOfFile(mapVROM, FILE_MAP_WRITE, 0, 0, 0);
	}
#else
	VROM=(uint8 *)malloc(CHRRAMSize);
#endif
    UNIFchrrama=VROM;
    SetupCartCHRMapping(0,VROM,CHRRAMSize,1);
    AddExState(VROM,CHRRAMSize, 0, "CHRR");
   }
   if(head.ROM_type&8)
    AddExState(ExtraNTARAM, 2048, 0, "EXNR");
   tmp->init(&iNESCart);
   return(1);
  }
  tmp++;
 }
 return(0);
}