+ # In debug mode, the DMI interface is used to perform single-step
+ # and dump of the full register set (MSR, r0-r31, CR, XER, PC).
+ # by running the exact same program with microwatt and libre-soc
+ # a straight "diff -u" of the complete progress dumps can be done
+ # and therefore computation instruction discrepancies found immediately
+ # and easily, running at "verilator" speed.
+ #
+ # the FSM is a bit of a dog's dinner, it relies on the way that DMI
+ # works, sending requests at periodic intervals. needs work. DoesTheJob.
+