Rebased ref, commits from common ancestor:
commit a283c62c1db9e25ba11c6d72e4d00e0d911d64a2
Author: Philip Langdale <philipl at fido2.homeip.net>
Date: Fri Feb 9 11:09:17 2007 -0800
Filter out default modes that are larger than the hardware
maxmimum size and add an explicit mode for the hardware
maximum.