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<concept id="GUID-7A4D4E44-B029-5E4C-9E2D-1CD420BB2B56" xml:lang="en"><title>Emulator

BSP Overview</title><shortdesc>The emulator board support package (BSP) provides the variant kernel,

executables, debugging framework and device drivers for the Symbian platform

(Epoc) emulator. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>

<section id="GUID-03D81C3F-4036-462F-86B0-6B6A6897B5CE"><title>Purpose</title> <p>The emulator is a port of Symbian platform

on the Win32 platform. It allows developers to try things out in an inexpensive

development environment and to test and debug code before running it on target

hardware. When attempting to implement some new and perhaps unproven functionality

developers can learn much from running the application in the emulator. </p> <p>The

emulator is used for: </p> <ul>

<li id="GUID-2A94B6D1-F44C-532D-A12B-040F825F4C0C"><p>testing new code ideas, </p> </li>

<li id="GUID-7D9F8ADF-5531-59FC-9586-1566DD605718"><p>debugging code before

trying it on target hardware or a hardware BSP such as OMAP H4, </p> </li>

<li id="GUID-AA53B122-E40E-507D-8AAF-82D0588E8823"><p>running Symbian platform

reference implementations and test code, </p> </li>

<li id="GUID-F618725D-99B5-592D-8AA2-760DA5ADFABB"><p>learning to develop

for Symbian platform — through formal Symbian platform developer training

courses. </p> </li>

</ul> <p>This document describes the composition of the Symbian platform (Epoc)

emulator in the <xref href="GUID-7A4D4E44-B029-5E4C-9E2D-1CD420BB2B56.dita#GUID-7A4D4E44-B029-5E4C-9E2D-1CD420BB2B56/GUID-82A619C7-BF2C-5211-9134-8414685413C5">Emulator

BSP Summary</xref>. For details about configuring and using the emulator please

see the <xref href="GUID-6CEE9977-4697-5050-85EF-719FB2A0E71E.dita">Emulator</xref> section

of Symbian platform Tools And Utilities. </p> </section>

<section id="GUID-135581F1-7A93-4DFE-89C1-4388FDCDFBBD"><title>Required background</title> <p>There is no formal background

required for this section; except perhaps curiosity or a need to know more

about the emulator. </p> </section>

<section id="GUID-D5D33AFF-583F-5E3B-B153-29D8E12EDD42"><title>Key concepts

and terms</title> <p>The following concepts and terms are used in the context

of the emulator: </p> <dl>

<dlentry>

<dt>Bootstrap</dt>

<dd><p>The first task of Symbian platform is to run the bootstrap application,

which performs various initialization tasks on the hardware before starting

the kernel. Since emulator does not have to intialize the hardware, its startup

application directly starts the kernel. The remainder of the boot process

is the same on the emulator as well. </p> </dd>

</dlentry>

<dlentry>

<dt>File system support</dt>

<dd><p>During run time, the emulator emulates the Symbian platform file system

onto the file system on a PC. This enables the application to use the file

system drives without interfering with the drives on the PC. Performance and

size of such drives may not be the same as it would be for the actual hardware. </p> </dd>

</dlentry>

<dlentry>

<dt>Floating point behaviour </dt>

<dd><p>The emulator is implemented on the Intel x86 processors which has floating

point hardware as opposed to IEEE-754 single precision and double precision

floating point values used by Symbian platform. So the user has to be careful

in using floating-point functions where the target hardware does not have

hardware support. </p> </dd>

</dlentry>

<dlentry>

<dt>Machine word alignment</dt>

<dd><p>Since ARM uses a 32-bit RISC architecture, the 32-bit quantities must

be aligned to a 32-bit machine word boundary only. In other words, the address

is a multiplier of 4. This may or may not work with an emulator. For more

details see <xref href="GUID-ADCDCB7D-2402-53CE-B563-85BF479DA6C3.dita">Machine

word alignment</xref>. </p> </dd>

</dlentry>

<dlentry>

<dt>Memory constraints </dt>

<dd><p>The emulator emulates a device with a total heap size of 64MB. The

initial and maximum size for the default heap for an individual process on

the emulator (EKA2) can be set, in the same way as for a process on a native

target. </p> </dd>

</dlentry>

<dlentry>

<dt>Process emulation</dt>

<dd><p>The EKA2 kernel provides a good emulation of Symbian platform processes

on the emulator with some limitations. For more details see <xref href="GUID-1940E2B6-47D8-553C-A448-D630551E86A6.dita">Process

emulation</xref> section. </p> </dd>

</dlentry>

<dlentry>

<dt>Scheduling</dt>

<dd><p>The thread scheduling functionality has been faithfully emulated by

the emulator on the target hardware. </p> </dd>

</dlentry>

<dlentry>

<dt>Serial ports</dt>

<dd><p>The serial ports are emulated through Windows serial ports. This is

adequate for most purposes, but may not provide the same performance as UARTs

on a real device. </p> </dd>

</dlentry>

<dlentry>

<dt>Timer</dt>

<dd><p>The standard timer resolution is 1/64th second on all platforms and

also on the emulator. </p> </dd>

</dlentry>

<dlentry>

<dt>USB</dt>

<dd><p>The emulator does not provide USB client support on reference hardware. </p> </dd>

</dlentry>

</dl> </section>

<section id="GUID-82A619C7-BF2C-5211-9134-8414685413C5"><title> Emulator BSP

Summary</title> <p>Emulator BSP provides the following executables, device

drivers (PDD and LDD) and utility applications: </p> <ul>

<li id="GUID-65C58628-BB5A-5E05-BFD5-D6857BE96337"><p> <b>Emulator kernel</b>  </p> <p> <filepath>_h4hrp_ekern.exe</filepath>  </p> <p>The

emulator specific variant of the kernel. </p> </li>

<li id="GUID-8A563FC4-830C-566E-B6B8-540CE153C5E4"><p> <b>Emulator Internal

RAM media driver</b>  </p> <p> <filepath>_h4hrp_medint.pdd</filepath>  </p> <p>The

physical device driver (PDD) for the internal RAM media for the emulator. </p> </li>

<li id="GUID-75D4794E-1713-56D5-BAAF-2F09438CD704"><p> <b>Kernel Trace Tool</b>  </p> <p> <filepath>_integrator_cm1136_btracex.ldd</filepath>  </p> <p>The emulator variant kernel trace tool. </p> </li>

<li id="GUID-1BEC67D4-62D9-5DFC-8FE0-98914B4A802B"><p> <b>Epoc boot library</b>  </p> <p> <filepath>_integrator_cm920_kc_exe.lib</filepath>  </p> <p>Provides the bootup for Epoc. </p> </li>

<li id="GUID-1D562FED-7678-59CB-9DCF-A1C1E2A2FACA"><p> <b>Display Device Driver</b>  </p> <p> <filepath>display0.ldd</filepath>  </p> <p>The

logical device driver (LDD) for the emulator display. </p> </li>

<li id="GUID-AAF10CBE-9B3B-5233-8040-7864074F6DA0"><p> <b>Symbian platform

Startup</b>  </p> <p> <filepath>e32strt.exe</filepath>  </p> <p>The Symbian

platform startup process for the emulator. </p> </li>

<li id="GUID-8040ADCD-3650-521A-8949-D805F0928DBD"><p> <b>Serial Device Driver</b>  </p> <p> <filepath>ecdrv.pdd</filepath>  </p> <p>The

physical driver for the emulator serial device. </p> </li>

<li id="GUID-F718A1FF-D151-5BED-8CB7-B83A1BAFBD3D"><p> <b>Serial Port Driver</b>  </p> <p> <filepath>ecomm.ldd</filepath>  </p> <p>The

logical device driver (LDD) for the emulator serial port. </p> </li>

<li id="GUID-B0BCCCDD-1950-52F3-850E-CB3550B0CF1F"><p> <b>Console</b>  </p> <p> <filepath>econsnogui.dll</filepath>  </p> <p>The

emulator console. Provides an <xref href="GUID-1B13A3E3-678A-3430-9A42-3749BF77A633.dita"><apiname>RConsole</apiname></xref>. </p> </li>

<li id="GUID-64D8F18F-C33F-5326-9D21-DCB16F59525B"><p> <b>Variant Specific

Debugging Customizations</b>  </p> <p> <filepath>ecust.dll</filepath>  </p> <p>Debugging

customizations for the emulator. </p> </li>

<li id="GUID-636EA738-D2FB-535D-82AF-8D3B0CAE30D0"><p> <b>Keyboard Data</b>  </p> <p> <filepath>ekdata.dll</filepath>  </p> <p>Provides

keyboard mapping behaviours. </p> </li>

<li id="GUID-45FF5314-CB4E-5797-9BB2-578CF8C0E036"><p> <b>MMC / SD Card Configuration</b>  </p> <p> <filepath>epbusv.dll</filepath>  </p> <p>Provides

the MMC / SD Card configuration for the emulator. </p> </li>

<li id="GUID-938E7A40-FF19-5E62-9649-7A0369ED6E94"><p> <b>Sound Device Driver</b>  </p> <p> <filepath>esdrv.pdd</filepath>  </p> <p>The

physical device driver (PDD) for the sound device. </p> </li>

<li id="GUID-3BEDC85E-650F-5B57-8508-66BF099D9377"><p> <b>Ethernet Device

Driver</b>  </p> <p> <filepath>ethernet.pdd</filepath>  </p> <p>The physical

device driver (PDD) for the Ethernet under the windows emulator. </p> </li>

<li id="GUID-486F392A-8A27-51A7-938B-3472E7464B14"><p> <b>Hardware Abstraction</b>  </p> <p> <filepath>hal.dll</filepath>  </p> <p>The

hardware abstraction that is used to configure hardware settings for the emulator.

Specifically the CPU speed and the display settings are configured with the

emulator HAL. </p> </li>

<li id="GUID-7EB71A72-01B8-56F7-90CF-94409FA3A2B5"><p> <b>Flash Media Driver</b>  </p> <p> <filepath>medlfs.pdd</filepath>  </p> <p>The

physical device driver (PDD) for the Flash Media Driver. </p> </li>

<li id="GUID-0B8E31B3-700B-5B63-8BFA-36A59CD9F6F2"><p> <b>NAND Media Driver</b>  </p> <p> <filepath>mednand.pdd</filepath>  </p> <p>The

physical device driver (PDD) for the NAND Media Driver. </p> </li>

<li id="GUID-02B06847-062A-5F47-8E19-1337CE8FE2EF"><p> <b>Shared Chunk Sound

Driver</b>  </p> <p> <filepath>soundsc.pdd</filepath>  </p> <p>Emulator playback

functions for the shared chunk sound driver PDD. </p> </li>

<li id="GUID-3C5965C2-6132-5073-B3B0-BC2136B4717B"><p> <b>File Server</b>  </p> <p> <filepath>win_drive.fxt</filepath>  </p> <p>The

test File Server extension for the emulator. </p> </li>

<li id="GUID-85A419B0-665A-56C5-B30E-456F0D5A8B24"><p> <b>Windows GUI Settings</b>  </p> <p> <filepath>winsgui.dll</filepath>  </p> <p>The

standard emulator GUI and keyboard settings. </p> </li>

</ul> </section>

</conbody><related-links>

<link href="GUID-04F23FCB-FC53-5CBA-9035-5F4F234C1F59.dita"><linktext>Emulator

Guide</linktext></link>

<link href="GUID-9540A82E-F83D-55F5-B441-868CF77468E9.dita#GUID-9540A82E-F83D-55F5-B441-868CF77468E9/GUID-CFED15B1-E768-534E-9043-7AADE45EE9AF">

<linktext>Media Drivers</linktext></link>

<link href="GUID-0437DB4C-FC4E-51DC-BB4C-95C0B26834F5.dita"><linktext>Device Driver

Guide</linktext></link>

</related-links></concept>