john heasley wrote:

> I'm working on a driver for the Symmetricom BC637PCI timing card.  This
> model provides a GPS receiver (a Trimble ACE iii), which works with ntpd's
> bancomm reference clock driver (which a few modifications).
> 
> IPL_TTY seems most appropriate, but it is not clear to me.  suggestions?

I'd say IPL_SERIAL - you want an interrupt with a fairly high priority
if you're going to do time-related stuff with it.

Simon.
--
Simon Burge                            <simonb@wasabisystems.com>
NetBSD Support and Service:         http://www.wasabisystems.com/