Back-Annotate Project
In general, you will only back-annotate
your project once in a design cycle. At
that time, you will perform a full back-
annotation. This ensure the pins as well
as timing of your design would not change.
Use this back-annotation if you want to
lock down the pin assignments given by
MAX+PLUS II. This will include your
own pin assignments. (Why? You
probably don’t want to enter by hand
128 pin assignments for a 208 package.)