1 芯片我是用moto ib8

20引脚的flash芯片

2 主要代码如下

int  Chiper(unsigned short ax1, int bufferr, int *  k1, int* k2)        
{                                                                                     
 // int bufferr; // esi@1                                                               
  char key; // dl@3                                                                   
  char i; // edi@3                                                              
  char tempkey; // dl@4                                                               
 unsigned short length1; // [sp+4h] [bp-4h]@2                                                   
                                                                                    
    //*(WORD *) get value                                                                               
    length1 = ax1;                                                                    
    do                                                                                
    {                                                                                 
      key = 0;                                                                        
      i = 4;                                                                          
      do                                                                              
      {                                                                               
       ax1= *(WORD *)k1;  
        tempkey = 2 * key;                                                            
        if ( *(WORD *)k1 & 1 )                                                       
        {                                                                             
          *(WORD *)k1 = ((ax1 ^ *(WORD *)k2) >> 1) | 0x8000;      
          tempkey |= 1u;                                                              
        }                                                                             
        else                                                                          
        {                                                                             
          ax1 = ax1 >> 1;  
       *(WORD *)k1 = ax1;                                                         
        }                                                                             
        key = 2 * tempkey;                                                            
        if ( *(BYTE *)k1 & 0x80 )                                                    
          key |= 1u;                                                                  
        --i;                                                                          
      }                                                                               
      while ( i );                                                                    
      *(BYTE *)bufferr++ ^= key;                                                     
    }                                                                                 
    while ( length1-- != 1 );                                                         
                                                                                   
  return ax1;                                                                         
}           
这段代码是单片机里面运行
我把pc端反汇编。
问题 在 单片机里面！

3 另外我发现在单片里面 稍稍做点手脚， dump 工具 就没作用
4 可以参考的硬件设计为http://hc08web.de/usb08
5软件参考没混淆前的multikey.sys