Hamish Moffatt wrote:

> Unfortunately I don't think a polled, non-buffered routine is going to
> work.  Data arrives in large bursts at 1 second intervals.  I would
> prefer that an interrupt was used and the result placed in a buffer
> for me to use when I am ready.

  Then you don't want a 16F84.  Try a 16F87x.
--
  Cheers,
        Paul B.