void setup() {
  // put your setup code here, to run once:
  volatile char *dir;
  dir=0x30;
  *dir=0xFF;
  dir=0x107;
  *dir=0xFF;
}

void loop() {
  // put your main code here, to run repeatedly:
  volatile char *out;
  volatile int i;
  volatile long j;
  volatile long k;
  unsigned char arr[]={0xBF,0x86,0xDB,0xCF,0xE6,0xED,0xFD,0x87,0xFF,0xEF};
  for(i=0;i<=9;i++){
    out=0x31;
    *out=arr[i];
    for(j=0;j<=9;j++){
      out=0x108;
      *out=arr[j];
      for(k=0;k<80000;k++);
    }
  }
  
  
}