Why do I get messages like: ``<tt class="ERRORNAME">unknown: <PNP0303> can't assign resources</tt>'' on boot?

Why do I get messages like: ```unknown: <PNP0303> can't assign resources`'' on boot?

The following is an excerpt from a post to the freebsd-current mailing list.

	The ``can't assign resources'' messages indicate that the devices are legacy ISA devices for which a non-PnP-aware driver is compiled into the kernel. These include devices such as keyboard controllers, the programmable interrupt controller chip, and several other bits of standard infrastructure. The resources cannot be assigned because there is already a driver using those addresses.
--Garrett Wollman `< wollman@FreeBSD.org>`, 24 April 2001