Day 5 - Instructional Underpinnings

Well, today could have gone better.  I did not get as much done as I was hoping to, but I did get a few different tweaks done.  The most notable of those was allowing the use of the arrow keys to set the instructions - left and right move the currently selected register, and up and down cycle through the available instructions.  Because of the way I'm structuring the data, it was a little tricky to figure that one out.

I also started to lay the groundwork for actually executing the instructions, but didn't get far enough to actually make it happen.  I guess that there is always tomorrow!