his initial test.
<LI> The candidate pointer is divided into two pieces; the most significant
bits identify a <TT>HBLKSIZE</tt>-sized page in the address space, and
the least significant bits specify an offset within that page.
(A hardware page may actually consist of multiple such pages.
HBLKSIZE is usually the page size divided by a small power of two.)
<LI>
The page address part of the candidate pointer is looked up in a
<A HREF="tree.html">table</a>.
Each table entry contains either 0, indicating that t