Ken Webster wrote:

> I just happened to have an example sitting around.  It is for a 4x4
> keypad connected to a 17C756 on PORTB.  It doesn't do the fast scan
> ... just a plain old one-row-at-a-time scan.

  Whoa-hoah, that *is* hard-wired!  And that's the series without the
rotten "bank select" muck-up.  Interesting.
--
  Cheers,
        Paul B.