K 10 svn:author V 6 scottl K 8 svn:date V 27 2005-03-12T07:01:53.000000Z K 7 svn:log V 219 Guard against an integer underflow that could cause busdma to eat up all available RAM. This also results in the global bounce page limit being applied to zones instead of globally. Submitted by: Petr Lampa (in part) END