Another Arduino was used to light up the status/alarm lights.

Pictures are coming! My DSKY is currently halfway across Europe, so this is all coming from the pictures I took on my phone.

I chose to use a Nextion LCD for the display. A custom GUI was created, to display the three registers, noun, verb and prog numbers.

With this serial line connected to the ATMEGA328, I still had enough lines to connect each status light to a pin of the controller. I wrote a simple piece of code that parses a serial text line which contains the status light information, the registers, verb, noun and program name.