void setup() {
 volatile char * dir;
  dir=0x30;
  *dir=0xff;
  volatile char * dirk;
  dirk=0x107;
  *dirk=0xff;

}

void loop() {
volatile char *out;
out=0x31;
*out=0x5B;
volatile long i=0;
for(i=0;i<=1000000;i++);
*out=0x00;
volatile char * out2;
out2=0x108;
*out2=0x5B;
for(i=0;i<=1000000;i++);
*out2=0x00;
for(i=0;i<=1000000;i++);


}