K 10
svn:author
V 3
dfr
K 8
svn:date
V 27
1999-11-09T21:43:12.000000Z
K 7
svn:log
V 178
Drop ipl to zero before calling ast(). Make sure that this only happens
if we are really going to call ast() to avoid unexpected interrupt
recursion.

Reviewed by: bde, gallatin

END