$600003 -W ($FF) Bus waitstates
	The TI89 hardware needs no waitstates.  AMS messes with this port on
	startup for compatibility with the TI92, but the battery checker
	will reset it to $FF within one second.
	:7	-
	:6-4	Wait states =(7-n) for non-RAM accesses
	:3	-
	:2-0	Wait states =(7-n) for RAM accesses