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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2855 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2010-08-15 15:24:08 +00:00
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4
Documentation/NuttXDemandPaging.html
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@ -128,7 +128,7 @@
<p> <p>
This document summarizes the design of NuttX on-demand paging. This document summarizes the design of NuttX on-demand paging.
This feature permits embedded MCUs with some limited RAM space to execute large programs some some non-random access media. This feature permits embedded MCUs with some limited RAM space to execute large programs from some non-random access media.
This feature was first discussed in this email thread: This feature was first discussed in this email thread:
<a href="http://tech.groups.yahoo.com/group/nuttx/message/213">http://tech.groups.yahoo.com/group/nuttx/message/213</a>. <a href="http://tech.groups.yahoo.com/group/nuttx/message/213">http://tech.groups.yahoo.com/group/nuttx/message/213</a>.
</p> </p>
@ -152,7 +152,7 @@
</p> </p>
<p> <p>
If the platform meets these requirement, then NuttX can provide on-demand paging: If the platform meets these requirement, then NuttX can provide on-demand paging:
It can copy .text from the large program in non-volatile media into RAM as needed to execute the huge program from the small RAM. It can copy .text from the large program in non-volatile media into RAM as needed to execute a huge program from the small RAM.
</p> </p>
<a name="Terminology"><h2>Terminology</h2></a> <a name="Terminology"><h2>Terminology</h2></a>

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Documentation/NuttxPortingGuide.html
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<h1><big><font color="#3c34ec"> <h1><big><font color="#3c34ec">
<i>NuttX RTOS Porting Guide</i> <i>NuttX RTOS Porting Guide</i>
</font></big></h1> </font></big></h1>
<p>Last Updated: July 12, 2010</p> <p>Last Updated: August 14, 2010</p>
</td> </td>
</tr> </tr>
</table> </table>
@ -98,7 +98,8 @@
<a href="#schedprocesstimer">4.2.3 <code>sched_process_timer()</code></a><br> <a href="#schedprocesstimer">4.2.3 <code>sched_process_timer()</code></a><br>
<a href="#irqdispatch">4.2.4 <code>irq_dispatch()</code></a> <a href="#irqdispatch">4.2.4 <code>irq_dispatch()</code></a>
</ul> </ul>
<a href="#ledsupport">4.3 LED Support</a> <a href="#demandpaging">4.3 On-Demand Paging</a><br>
<a href="#ledsupport">4.4 LED Support</a>
<ul> <ul>
<a href="#ledheaders">4.3.1 Header Files</a><br> <a href="#ledheaders">4.3.1 Header Files</a><br>
<a href="#leddefinitions">4.3.2 LED Definitions</a><br> <a href="#leddefinitions">4.3.2 LED Definitions</a><br>
@ -1483,7 +1484,17 @@ The system can be re-made subsequently by just typing <code>make</code>.
the appropriate, registered handling logic. the appropriate, registered handling logic.
</p> </p>
<h2><a name="ledsupport">4.3 LED Support</a></h2> <h2><a name="demandpaging">4.3 On-Demand Paging</a></h2>
<p>
The NuttX On-Demand Paging feature permits embedded MCUs with some limited RAM space to execute large programs from some non-random access media.
If the platform meets certiain requirements, then NuttX can provide on-demand paging:
It can copy .text from the large program in non-volatile media into RAM as needed to execute a huge program from the small RAM.
Design and porting issues for this feature are discussed in a sepate document.
Please see the <a href="NuttXDemandPaging.html">NuttX Demand Paging</a> design document for further information.
</p>
<h2><a name="ledsupport">4.4 LED Support</a></h2>
<p> <p>
A board architecture may or may not have LEDs. A board architecture may or may not have LEDs.