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   <hr>
 
   <h2>References</h2>
 
   <p>This page contains a collection of links to relevant reference
     material.</p>
 
   <h3>Architecture</h3>
 
   <ul>
     <li>Intel Software Developer's Manual, revision 2.1
       <ul>
 	<li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.1/245317.pdf">Volume 1: Application Architecture [pdf]</a></li>
 	<li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.1/245318.pdf">Volume 2: System Architecture [pdf]</a></li>
 	<li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.1/245319.pdf">Volume 3: Instruction Set Reference [pdf]</a></li>
 	<li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.1/24869909.pdf">Specification Update [pdf]</a></li>
       </ul>
     </li>
+    <li>Intel Software Developer's Manual, revision 2.2
+      <ul>
+        <li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.2/24531705.pdf">Volume 1: Application Architecture [pdf]</a></li>
+        <li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.2/24531805.pdf">Volume 2: System Architecture [pdf]</a></li>
+        <li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/sdm-2.2/24531905.pdf">Volume 3: Instruction Set Reference [pdf]</a></li>
+      </ul>
+    </li>
   </ul>
 
   <h3>Processor Implementations</h3>
 
   <ul>
     <li>Itanium (Merced)
       <ul>
 	<li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/itanium/24532003.pdf">Processor Reference Manual [pdf]</a></li>
       </ul>
     </li>
     <li>Itanium 2 (McKinley, Madison, Madison II)
       <ul>
 	<li><a href="http://people.FreeBSD.org/~marcel/refs/ia64/itanium2/25111003.pdf">Processor Reference Manual [pdf]</a></li>
       </ul>
     </li>
   </ul>
 
   <h3>Chipset</h3>
 
   <ul>
     <li><a href="http://developer.intel.com/design/archives/itanium/downloads/248703.htm">Intel 460GX Chipset Datasheet</a></li>
     <li><a href="http://developer.intel.com/design/archives/itanium/downloads/248704.htm">Intel 460GX Chipset System Software Developer's Manual</a></li>
     <li>Intel E8870 Chipset Datasheets
       <ul>
 	<li><a href="http://developer.intel.com/design/chipsets/datashts/251111.htm">Intel E8870IO Server I/O Hub (SIOH)</a></li>
 	<li><a href="http://developer.intel.com/design/chipsets/datashts/251112.htm">Intel E8870 Scalable Node Controller (SNC)</a></li>
 	<li><a href="http://developer.intel.com/design/chipsets/datashts/251113.htm">Intel E8870DH DDR Memory Hub (DMH)</a></li>
 	<li><a href="http://developer.intel.com/design/chipsets/datashts/252034.htm">Intel E8870SP Scalability Port Switch (SPS)</a></li>
 	<li><a href="http://developer.intel.com/design/chipsets/e7500/datashts/290732.htm">Intel 82870P2 PCI/PCI-X 64-bit Hub 2 (P64H2)</a></li>
 	<li><a href="http://developer.intel.com/design/chipsets/datashts/290744.htm">Intel 82801DB I/O Controller Hub 4 (ICH4)</a></li>
       </ul>
     </li>
     <li>Hewlett-Packard zx1
       <ul>
 	<li><a href="http://h21007.www2.hp.com/dspp/files/unprotected/linux/zx1-ioa-mercury_ers.pdf">zx1 ioa reference specification</a></li>
 	<li><a href="http://h21007.www2.hp.com/dspp/files/unprotected/linux/zx1-mio.pdf">zx1 memory and I/O (mio) reference specification</a></li>
       </ul>
     </li>
   </ul>
 
   <h3>Runtime</h3>
 
   <ul>
     <li><a href="http://developer.intel.com/design/itanium/downloads/245358.htm">Software Conventions &amp; Runtime Architecture Guide</a></li>
     <li><a href="http://developer.intel.com/design/itanium/downloads/245370.htm">Processor-specific Application Binary Interface (ABI)</a></li>
   </ul>
 
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