>We all know that, once you've figure out how to use the things, using a new
>form of I/O involves nothing more than looking it up in the datasheet.
Once
>you "get it", the newer parts are no more complicated than the older ones.
>I intend to make this point later in the lesson, and I have tested out the
>PIC-EL with the 628 and found no issues.  But for someone just starting out
>in the whole business, the newer parts with an alphabet soup around every
>pin are very intimidating.

However the F628A at about half the cost of an F84 does seem a more sensible
selection. After all to start out it can be treated as an F84, the only
change being that the comparators need to be turned off, all the other
peripherals default to off to start with, so using the F84 pinout in the
early stages removes most of the "alphabet soup" until later. Especially as
you appear to have already tested an appropriate application on this chip.

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