IT'S KINDA A CPU!!!!! able to set first register

added a second rom.
made system class a subclass of the CPU class to take advantage of the
register while debugging
change the main registers dictionary to all strings. Works ok for now
until I find the best method for changing strings to Hex or base 2.
Changed closure op6XNN to reference a self.method which prints the
debugger and actually manipulates the register.