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git-svn-id: https://nuttx.svn.sourceforge.net/svnroot/nuttx/trunk@2855 7fd9a85b-ad96-42d3-883c-3090e2eb8679
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patacongo 2010-08-15 15:24:08 +00:00
parent 80e4214c33
commit 26e7a5facb
2 changed files with 16 additions and 5 deletions
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4
nuttx/Documentation/NuttXDemandPaging.html
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@ -128,7 +128,7 @@
<p>
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:
<a href="http://tech.groups.yahoo.com/group/nuttx/message/213">http://tech.groups.yahoo.com/group/nuttx/message/213</a>.
</p>
@ -152,7 +152,7 @@
</p>
<p>
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>
<a name="Terminology"><h2>Terminology</h2></a>

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nuttx/Documentation/NuttxPortingGuide.html
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@ -12,7 +12,7 @@
<h1><big><font color="#3c34ec">
<i>NuttX RTOS Porting Guide</i>
</font></big></h1>
<p>Last Updated: July 12, 2010</p>
<p>Last Updated: August 14, 2010</p>
</td>
</tr>
</table>
@ -98,7 +98,8 @@
<a href="#schedprocesstimer">4.2.3 <code>sched_process_timer()</code></a><br>
<a href="#irqdispatch">4.2.4 <code>irq_dispatch()</code></a>
</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>
<a href="#ledheaders">4.3.1 Header Files</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.
</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>
A board architecture may or may not have LEDs.