[求助] led左移问题求解

/*8X8行扫描，左移显示*/
#include<reg51.h>
#define uchar unsigned char
#define uint unsigned int

uchar code TAB[]={0xFF,0xF7,0xFB,0x81,0xFB,0xF7,0xFF,0xFF};
uchar i,t,j=0;

delay(uchar t)
{
while (t--)
{;}
}

void main(void)
{ uchar T,Y,Q;
while(1)
   {
   for(Q=0;Q<8;Q++)
    for(T=0;T<100;T++)    //速度
      {
    P2=0x01;
          for(i=0;i<8;i++)
         {
       Y=TAB[i+1]*256+TAB;
    Y=Y<<(7-Q)|Y>>Q;
    P1=Y%256;
    delay(60);
    P2=P2<<1|P2>>7;
       }
    }
}
}