diff -r 578be2adaf3e -r 307f4279f433 Adaptation/GUID-2ADB873A-1580-476A-9642-AB47D13D4A98.dita
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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-2ADB873A-1580-476A-9642-AB47D13D4A98" xml:lang="en"><title>Driver
+Source Files</title><shortdesc>This document details the directory structure and file types of
+logical device drivers and physical device drivers.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<section id="GUID-437190D1-9F2D-450E-A659-B2EDE09A98B6">       <title>Directory
+structure</title>       <p>Device driver DLLs come in two types - the logical
+device driver (LDD), and the physical device driver (PDD). Typically, a single
+LDD supports functionality common to a class of hardware devices, whereas
+a PDD supports a specific member of that class. </p> <p>In Symbian platform
+source code, PDDs are part of variant baseports, while LDDs are stored in
+a shared location that is not specific to a particular variant: </p> <ul>
+<li id="GUID-AA32E34F-DA8E-5093-B2F2-A05C6FF5878C"><p>PDD source files (<filepath>.cpp</filepath>, <filepath>.h</filepath> and <filepath>.mmp</filepath>) for peripherals for the H4 variant are in source directories named <filepath>base\omap_hrp\h4\</filepath> &lt;<i>driver_pdd</i> &gt;. </p> </li>
+<li id="GUID-59BCB89E-4DDA-5EC5-9CE7-766929578688"><p>PDD source files (<filepath>.cpp</filepath>, <filepath>.h</filepath> and <filepath>.mmp</filepath>) for peripherals for the Emulator variant are in source directories named <filepath>base\wins\</filepath> &lt;<i>driver_pdd</i> &gt;. </p> </li>
+<li id="GUID-E6C48B50-6ACA-58DE-A17A-159FECCC419E"><p>LDD source files are
+in source directories named <filepath>base\e32\</filepath> &lt;<i>driver</i> _<i>ldd</i> &gt;,
+which are shared for all variants. </p> </li>
+<li id="GUID-79EFD591-60E9-5949-B1DB-1E7F9BFEF94A"><p>Common test application
+source files are in source directories named <filepath>base\e32test\</filepath> &lt;<i>driver_test</i> &gt;. </p> </li>
+</ul> <p>For both types of driver, the source files are generally organised
+in the following sub-directories: </p> <ul>
+<li id="GUID-7C92DAB4-607D-5E28-B40E-CE6BE889F54D"><p>&lt;<i>driver</i> &gt;<filepath>\group</filepath> – <filepath>.mmp</filepath> files </p> </li>
+<li id="GUID-D4D7A72B-B45D-5142-9567-23D913AE09D1"><p>&lt;<i>driver</i> &gt;<filepath>\inc</filepath> – <filepath>.h</filepath> files </p> </li>
+<li id="GUID-5C955F3B-B490-5CB1-90EA-AB51F2B86ECD"><p>&lt;<i>driver</i> &gt;<filepath>\src</filepath> – <filepath>.cpp</filepath> files </p> </li>
+</ul>     </section>
+<section id="GUID-F0256258-9C68-4598-9848-54D1BE43C63D"><title>File extensions</title> <p>The
+project files of a device driver that is part of the Kernel code are similar
+to those for other components in Symbian platform. The following tables summarise
+the source and binary file types you will see: </p> <table id="GUID-0EFAD42A-E690-5143-93A8-29EC596B72B6">
+<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
+<tbody>
+<row>
+<entry><p> <b>Source File Type</b>  </p> </entry>
+<entry><p> <b>Description</b>  </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .h</filepath>  </p> </entry>
+<entry><p>Include files </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .cpp</filepath>  </p> </entry>
+<entry><p>Source files </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .inl</filepath>  </p> </entry>
+<entry><p>Inline files </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .mmp</filepath>  </p> </entry>
+<entry><p>Project file, similar to a makefile in other operating systems </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .inf</filepath>  </p> </entry>
+<entry><p>Build file grouping multiple mmp files. Command line builds are
+done from this file's directory. </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .iby</filepath>  </p> </entry>
+<entry><p>ROM include file. This file specifies the built files that need
+to be included in a ROM image. This is not used in builds for the Emulator. </p> </entry>
+</row>
+</tbody>
+</tgroup>
+</table> <p> </p> <table id="GUID-23EBCA5D-F979-54D7-B3D8-75CB1BEFBC92">
+<tgroup cols="2"><colspec colname="col0"/><colspec colname="col1"/>
+<tbody>
+<row>
+<entry><p> <b>Binary File Type</b>  </p> </entry>
+<entry><p> <b>Description</b>  </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .ldd</filepath>  </p> </entry>
+<entry><p>Logical Device Driver target. A LDD contains code that is common
+to a class of hardware devices. </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .pdd</filepath>  </p> </entry>
+<entry><p>Physical Device Driver target. A PDD contains code that is specific
+to one particular type of device. </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .exe</filepath>  </p> </entry>
+<entry><p>Application executable target. </p> </entry>
+</row>
+<row>
+<entry><p> <filepath> .ext</filepath>  </p> </entry>
+<entry><p>Kernel extension target, a driver that is started when the kernel
+boots. </p> </entry>
+</row>
+</tbody>
+</tgroup>
+</table> </section>
+</conbody></concept>
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