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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE concept
+  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-0AFF5666-6BF9-5022-ADBC-5EFFA743B288" xml:lang="en"><title>ROM
+Paging Guide</title><shortdesc>Describes demand paging when applied to ROM demand paging. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<section id="GUID-D67AB531-76C8-50AE-BBA2-48FC7F47DCDD"><title>Introduction</title> <p>Demand
+paging using ROM demand paging is used when the files to be paged are in the
+core ROM image and not using another file system such as ROFS. </p> </section>
+<section id="GUID-338FBBC7-2B90-4483-B055-2AEA23DAB479"><title>Background information</title><p> The following are useful
+background information for Demand Paging using ROM demand paging:</p><ul>
+<li><p>Demand Paging</p></li>
+<li><p>ROM paging</p></li>
+</ul> </section>
+<section id="GUID-143C5BFF-AC9A-4A83-B20A-79E0A8E9B36E"><title>ROM Demand Paging features</title><p>Demand paging (using
+ROM demand paging) provides the following features compared to <xref href="GUID-CE9EA167-0594-5E61-9640-6B2B63A92EA7.dita">code
+paging</xref> and <xref href="GUID-2B7D04D9-98DE-5284-836D-01DB4FA8949D.dita">writable
+data paging</xref> : </p><ul>
+<li><p>Lower RAM overhead</p></li>
+<li><p>Lower performance overhead.</p></li>
+</ul> </section>
+<section id="GUID-5391A3D1-A6CE-4C1A-8D42-B74A7E77E709"><title>ROM Demand Paging limitations</title><p>The following are
+known limitations for Demand Paging (using ROM demand  paging) compared to
+the other types of code paging: </p><ul>
+<li><p>If the executable has static dependencies, then it is best to place
+ these dependencies in ROFS. This is a limitation of ROFS and not ROM demand
+paging.</p></li>
+<li><p>This paging system can only be used with files that are stored using
+ the ROM filing system. This is because ROM images using the ROM filing system
+ are designed to be executed in place. </p></li>
+</ul> </section>
+</conbody><related-links>
+<link href="GUID-D6C2202C-778C-558A-97AA-649CD6DB5E87.dita"><linktext>ROFS File
+System</linktext></link>
+<link href="GUID-5A71755A-E67F-5007-8C55-5B8FA65B3C04.dita"><linktext>ROM File
+System</linktext></link>
+<link href="GUID-D666F9A0-8BFE-5067-BC76-C3AD73587195.dita"><linktext>Composite
+File System</linktext></link>
+<link href="GUID-903A9956-87E2-5191-87A3-6D40797EB820.dita"><linktext>Configuring
+and building a ROM</linktext></link>
+</related-links></concept>
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