void setup() {
  // put your setup code here, to run once:
    volatile char *dirA,*dirB,x;
    volatile char *outA,*inpB;
    dirA=0x21; dirB=0x24;//H port
    *dirA=0xff; *dirB=0x00; 
    outA=0x22;inpB=0x23;
     while(1)
     {
       x=*inpB;
       if((x & 0x01)==0x01)
       
       *outA=0x02;
       else
       *outA=0x00;
       
        if((x & 0x02) == 0x02)
        
        *outA=0x01;
        else
        *outA=0x00;
     }
  }



void loop() {
  // put your main code here, to run repeatedly:

}