256字节ECC算法的实现

// 256ByteECC071123.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include "stdio.h"

//071126
unsigned char dat[]={
0x0  ,0x0 ,0x0 ,0x0  ,0x0 ,0x0  ,0xf  ,0x5a ,0x5a ,0xf  ,0xc  ,0x59 ,0x3  ,0x56 ,0x55 ,0x0  ,
0x65 ,0x30 ,0x33 ,0x66 ,0x3c ,0x69 ,0x6a ,0x3f ,0x3f ,0x6a ,0x69 ,0x3c ,0x66 ,0x33 ,0x30 ,0x65 ,
0x66 ,0x33 ,0x30 ,0x65 ,0x3f ,0x6a ,0x69 ,0x3c ,0x3c ,0x69 ,0x6a ,0x3f ,0x65 ,0x30 ,0x33 ,0x66 ,
0x3  ,0x56 ,0x55 ,0x0  ,0x5a ,0xf  ,0xc  ,0x59 ,0x59 ,0xc  ,0xf  ,0x5a ,0x0  ,0x55 ,0x56 ,0x3  ,
0x69 ,0x3c ,0x3f ,0x6a ,0x30 ,0x65 ,0x66 ,0x33 ,0x33 ,0x66 ,0x65 ,0x30 ,0x6a ,0x3f ,0x3c ,0x69 ,
0xc  ,0x59 ,0x5a ,0xf  ,0x55 ,0x0  ,0x3  ,0x56 ,0x56 ,0x3  ,0x0  ,0x55 ,0xf  ,0x5a ,0x59 ,0xc  ,
0xf  ,0x5a ,0x59 ,0xc  ,0x56 ,0x3  ,0x0  ,0x55 ,0x55 ,0x0  ,0x3  ,0x56 ,0xc  ,0x59 ,0x5a ,0xf  ,
0x6a ,0x3f ,0x3c ,0x69 ,0x33 ,0x66 ,0x65 ,0x30 ,0x30 ,0x65 ,0x66 ,0x33 ,0x69 ,0x3c ,0x3f ,0x6a ,
0x6a ,0x3f ,0x3c ,0x69 ,0x33 ,0x66 ,0x65 ,0x30 ,0x30 ,0x65 ,0x66 ,0x33 ,0x69 ,0x3c ,0x3f ,0x6a ,
0xf  ,0x5a ,0x59 ,0xc  ,0x56 ,0x3  ,0x0  ,0x55 ,0x55 ,0x0  ,0x3  ,0x56 ,0xc  ,0x59 ,0x5a ,0xf  ,
0xc  ,0x59 ,0x5a ,0xf  ,0x55 ,0x0  ,0x3  ,0x56 ,0x56 ,0x3  ,0x0  ,0x55 ,0xf  ,0x5a ,0x59 ,0xc  ,
0x69 ,0x3c ,0x3f ,0x6a ,0x30 ,0x65 ,0x66 ,0x33 ,0x33 ,0x66 ,0x65 ,0x30 ,0x6a ,0x3f ,0x3c ,0x69 ,
0x3  ,0x56 ,0x55 ,0x0  ,0x5a ,0xf  ,0xc  ,0x59 ,0x59 ,0xc  ,0xf  ,0x5a ,0x0  ,0x55 ,0x56 ,0x3  ,
0x66 ,0x33 ,0x30 ,0x65 ,0x3f ,0x6a ,0x69 ,0x3c ,0x3c ,0x69 ,0x6a ,0x3f ,0x65 ,0x30 ,0x33 ,0x66 ,
0x65 ,0x30 ,0x33 ,0x66 ,0x3c ,0x69 ,0x6a ,0x3f ,0x3f ,0x6a ,0x69 ,0x3c ,0x66 ,0x33 ,0x30 ,0x65 ,
0x0  ,0x55 ,0x56 ,0x3  ,0x59 ,0xc  ,0xf  ,0x5a ,0x5a ,0xf  ,0xc  ,0x59 ,0x3  ,0x56 ,0x55 ,0x0
};

//071123
unsigned char ECCTable[]={
0x0  ,0x55 ,0x56 ,0x3  ,0x59 ,0xc  ,0xf  ,0x5a ,0x5a ,0xf  ,0xc  ,0x59 ,0x3  ,0x56 ,0x55 ,0x0  ,
0x65 ,0x30 ,0x33 ,0x66 ,0x3c ,0x69 ,0x6a ,0x3f ,0x3f ,0x6a ,0x69 ,0x3c ,0x66 ,0x33 ,0x30 ,0x65 ,

0x66 ,0x33 ,0x30 ,0x65 ,0x3f ,0x6a ,0x69 ,0x3c ,0x3c ,0x69 ,0x6a ,0x3f ,0x65 ,0x30 ,0x33 ,0x66 ,
0x3  ,0x56 ,0x55 ,0x0  ,0x5a ,0xf  ,0xc  ,0x59 ,0x59 ,0xc  ,0xf  ,0x5a ,0x0  ,0x55 ,0x56 ,0x3  ,
0x69 ,0x3c ,0x3f ,0x6a ,0x30 ,0x65 ,0x66 ,0x33 ,0x33 ,0x66 ,0x65 ,0x30 ,0x6a ,0x3f ,0x3c ,0x69 ,
0xc  ,0x59 ,0x5a ,0xf  ,0x55 ,0x0  ,0x3  ,0x56 ,0x56 ,0x3  ,0x0  ,0x55 ,0xf  ,0x5a ,0x59 ,0xc  ,
0xf  ,0x5a ,0x59 ,0xc  ,0x56 ,0x3  ,0x0  ,0x55 ,0x55 ,0x0  ,0x3  ,0x56 ,0xc  ,0x59 ,0x5a ,0xf  ,
0x6a ,0x3f ,0x3c ,0x69 ,0x33 ,0x66 ,0x65 ,0x30 ,0x30 ,0x65 ,0x66 ,0x33 ,0x69 ,0x3c ,0x3f ,0x6a ,
0x6a ,0x3f ,0x3c ,0x69 ,0x33 ,0x66 ,0x65 ,0x30 ,0x30 ,0x65 ,0x66 ,0x33 ,0x69 ,0x3c ,0x3f ,0x6a ,
0xf  ,0x5a ,0x59 ,0xc  ,0x56 ,0x3  ,0x0  ,0x55 ,0x55 ,0x0  ,0x3  ,0x56 ,0xc  ,0x59 ,0x5a ,0xf  ,
0xc  ,0x59 ,0x5a ,0xf  ,0x55 ,0x0  ,0x3  ,0x56 ,0x56 ,0x3  ,0x0  ,0x55 ,0xf  ,0x5a ,0x59 ,0xc  ,
0x69 ,0x3c ,0x3f ,0x6a ,0x30 ,0x65 ,0x66 ,0x33 ,0x33 ,0x66 ,0x65 ,0x30 ,0x6a ,0x3f ,0x3c ,0x69 ,
0x3  ,0x56 ,0x55 ,0x0  ,0x5a ,0xf  ,0xc  ,0x59 ,0x59 ,0xc  ,0xf  ,0x5a ,0x0  ,0x55 ,0x56 ,0x3  ,
0x66 ,0x33 ,0x30 ,0x65 ,0x3f ,0x6a ,0x69 ,0x3c ,0x3c ,0x69 ,0x6a ,0x3f ,0x65 ,0x30 ,0x33 ,0x66 ,
0x65 ,0x30 ,0x33 ,0x66 ,0x3c ,0x69 ,0x6a ,0x3f ,0x3f ,0x6a ,0x69 ,0x3c ,0x66 ,0x33 ,0x30 ,0x65 ,
0x0  ,0x55 ,0x56 ,0x3  ,0x59 ,0xc  ,0xf  ,0x5a ,0x5a ,0xf  ,0xc  ,0x59 ,0x3  ,0x56 ,0x55 ,0x0
};

//计算ECC代码
void NandTranResult(unsigned char reg2,unsigned char reg3,unsigned char *ECCCode)
{
unsigned char temp1,temp2,i,a,b;

temp1=temp2=0;
a=b=0x80;

for(i=0;i<4;i++)
{
if(reg3&a)
temp1|=b;
b>>=1;
if(reg2&a)