Procesor Manual

Dual-Core Update to the Intel® Itanium® 2 Processor Reference Manual
For Software Development and Optimization
Revision 0.9

January 2006

Document Number: 308065-001

Notice: This document contains information on products in the design phase of development. The information here is subject to change without notice. Do not finalize a design with this information. INFORMATION IN THISDOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS OR IMPLIED, BY ESTOPPEL OR OTHERWISE, TO ANY INTELLECTUAL PROPERTY RIGHTS IS GRANTED BY THIS DOCUMENT. EXCEPT AS PROVIDED IN INTEL'S TERMS AND CONDITIONS OF SALE FOR SUCH PRODUCTS, INTEL ASSUMES NO LIABILITY WHATSOEVER, AND INTEL DISCLAIMS ANY EXPRESS OR IMPLIED WARRANTY, RELATING TO SALE AND/OR USE OF INTEL PRODUCTS INCLUDINGLIABILITY OR WARRANTIES RELATING TO FITNESS FOR A PARTICULAR PURPOSE, MERCHANTABILITY, OR INFRINGEMENT OF ANY PATENT, COPYRIGHT OR OTHER INTELLECTUAL PROPERTY RIGHT. Intel products are not intended for use in medical, life saving, or life sustaining applications. Intel may make changes to specifications and product descriptions at any time, without notice. Designers must not rely on the absenceor characteristics of any features or instructions marked “reserved” or “undefined.” Intel reserves these for future definition and shall have no responsibility whatsoever for conflicts or incompatibilities arising from future changes to them. The Itanium 2 processor may contain design defects or errors known as errata which may cause the product to deviate from published specifications. Currentcharacterized errata are available on request. The code name “Montecito” presented in this document is only for use by Intel to identify a product, technology, or service in development, that has not been made commercially available to the public, i.e., announced, launched or shipped. It is not a “commercial” name for products or services and is not intended to function as a trademark. Contact yourlocal Intel sales office or your distributor to obtain the latest specifications and before placing your product order. Copies of documents which have an order number and are referenced in this document, or other Intel literature, may be obtained by calling 1-800548-4725, or by visiting Intel's web site at http://www.intel.com. Intel, Itanium, Pentium, VTune and the Intel logo are trademarks orregistered trademarks of Intel Corporation or its subsidiaries in the United States and other countries. Copyright © 2006, Intel Corporation. All rights reserved. *Other names and brands may be claimed as the property of others.

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Reference Manual for Software Development and Optimization

Contents
1Introduction.........................................................................................................................9 1.1 Terminology........................................................................................................... 9 1.2 Related Documentation ......................................................................................... 9 The Dual-Core Itanium 2Processor.................................................................................11 2.1 Overview ............................................................................................................. 11 2.1.1 Identifying the Dual-Core Itanium 2 Processor....................................... 11 2.1.2 Introducing Montecito ............................................................................. 12 2.2 NewInstructions.................................................................................................. 14 2.3 Core..................................................................................................................... 15 2.3.1 Instruction Slot to Functional Unit Mapping ............................................ 15 2.3.2 Instruction Latencies and Bypasses.......................................................17 2.3.3 Caches and...