// Connect Eight LEDs to PORT K bit 0 to bit 7
// Glow ODD and EVEN LEDs alternately

#include <stdint.h>

#define kport (*(volatile uint8_t*)0x108)
#define kddr  (*(volatile uint8_t*)0x107)

void setup() {
  kddr = 0xFF;   }

void delayy(void){
  volatile uint32_t i;
  for(i = 0; i < 100000; i++);
}

void loop() {
  kport = 0xAA;  
  delayy();

  kport = 0x00;  
  delayy();

  kport = 0x55;  
  delayy();

  kport = 0x00;  
  delayy();
}