I'm stumped.. I'm simply attempting direct port manipulation of the pins on Ports F and K.

```
// First Set the port data direction registers as "outs"

DDRF = B11111111;  // GREEN LEDS - "ARMED"

DDRK = B11111111;  // YELLOW LEDS - DISARMED OFF HOOK"

DDRL = B11111111;  // RED - "ON HOOK"

//Then drive alternating pins High/Low

PORTF = B01010101; 

PORTK = B01010101;

PORTL = B01010101;

```

Port L works fine, the other two "no joy".

Any thoughts?