add hex dump of a rom, good for reference
bit flags for the status register. Woo!
lots of pc work, implemented ADC

Did enough work on the status register and memory reading to implement
all of ADC. I'm starting to wonder about a few of my design choices. I'm
having to repeate myself a lot on matching, but I expected this. I
imagine if this ever gets refactored I'll just throw everything in the
master match statement