void setup() {

    volatile char *dir;
    dir = 0x30;  //Port F
    *dir = 0xFF;

    dir = 0x107; //Port K
    *dir = 0xFF; 

}

void loop() {

  volatile char *out;
  out = 0x31;  //Port F
  *out = 0x5B;

  out = 0x108;  //Port K
  *out = 0x6D;

}