--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-A91C6359-E547-51AD-AA8C-45BCAFBA98AC.dita	Fri Jan 22 18:26:19 2010 +0000
@@ -0,0 +1,43 @@
+<?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-A91C6359-E547-51AD-AA8C-45BCAFBA98AC" xml:lang="en"><title>Kernel Architecture
+(EKA2)</title><shortdesc>EKA2 is the principal Hardware and Kernel Services module. It manages
+the CPU and memory resources of a phone, and provides an architecture for
+device drivers to manage other hardware resources. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p id="GUID-B66850E3-11C9-58D6-ADB3-12ABBC1B792C"> The Kernel has a layered
+architecture so that it can be ported to different hardware. All base ports
+must implement a layer called the ASSP/Variant that provides essential hardware-specific
+services for the Kernel. </p>
+<p>The Kernel also allows additional layers called personality layers to be
+created that provide emulations of traditional real time operating systems.
+This allows applications that were written for those operating systems to
+be run on Symbian platform. </p>
+<p>The device driver architecture and the services that the Kernel provides
+to device drivers are described in the <xref href="GUID-0437DB4C-FC4E-51DC-BB4C-95C0B26834F5.dita">Device
+Driver Guide</xref>. </p>
+</conbody><related-links>
+<link href="GUID-77DF7A6B-F01D-5B9F-9C7A-662A04ED8BE7.dita"><linktext>ASSP   Kernel
+Extension Overview</linktext></link>
+<link href="GUID-0437DB4C-FC4E-51DC-BB4C-95C0B26834F5.dita"><linktext>Device  
+Driver Guide</linktext></link>
+<link href="GUID-C06CFF3E-23E9-5E0B-99A1-51B8ED95465F.dita"><linktext>USB Client
+  Driver</linktext></link>
+<link href="http://developer.symbian.org/wiki/index.php/Symbian_OS_Internals/1._Introducing_EKA2.dita">
+<linktext>Symbian OS Internals - Chapter 1 Introducing EKA2</linktext></link>
+<link href="http://developer.symbian.org/wiki/index.php/Symbian_OS_Internals/2._Hardware_for_Symbian_OS.dita">
+<linktext>Symbian OS Internals - Chapter 2 Hardware for Symbian OS</linktext>
+</link>
+<link href="http://developer.symbian.org/wiki/index.php/Symbian_OS_Internals/5._Kernel_Services.dita">
+<linktext>Symbian OS Internals - Chapter 5 Kernel Services</linktext></link>
+<link href="http://developer.symbian.org/wiki/index.php/Symbian_OS_Internals/7._Memory_Models.dita">
+<linktext>Symbian OS Internals - Chapter 7 Memory Model</linktext></link>
+</related-links></concept>
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