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Prep for 0.3.7 release

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<td>
<h1><big><font color="#3c34ec"><i>NuttX RTOS</i></font></big></h1>
<p>Last Updated: January 30, 2008</p>
<p>Last Updated: January 31, 2008</p>
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<p>
The 18th release of NuttX (nuttx-0.3.6) is available for download
The 19th release of NuttX (nuttx-0.3.7) is available for download
from the <a href="http://sourceforge.net/project/showfiles.php?group_id=189573">SourceForge</a>
website.
The change log associated with the release is available <a href="#currentrelease">here</a>.
@ -464,45 +464,30 @@
These unreleased changes are listed <a href="#pendingchanges">here</a>.
</p>
<p>
NuttX 0.3.8 is the 7th release containing the integration of a network
subsystem and the uIP TCP/IP, UDP, and ICMP stacks based on
<a href="http://www.sics.se/~adam/uip/index.php/Main_Page">uIP</a>
into NuttX.
This release includes the preliminary port of NuttX to the ZiLOG z16f 16-bit microcontroller.
This port was verified using the ZiLOG z16f2800100zcog Development and the ZiLOG ZDS-II toolchain.
See http://www.zilog.com for further information.
</p>
<p>
This release contains on a few changes.
The primary purpose of this release is to synchronize with the release
of the pascal-0.1.0 add-on package.
This release of NuttX includes the following changes:
I emphasize that this is a preliminary release of the z16f port and is only alpha or, perhaps,
pre-alpha quality as of this writing.
There are a list of known issues in the TODO file in the <a href="TODO.txt">here</a>
The overall quality of NuttX (excluding the z16f port) continues to improve beyond the late beta level.
</p>
<p>
The z16f port required numerous changes to NuttX to handle:
</p>
<ul>
<li>Fixes for use with SDCC compiler, <li>
<li>Added a simulated z80 target (arch/z80), <li>
<li>Fix deadlock errors when using stdio but with no buffering, and</li>
<li>Add support for the add-on Pascal P-Code interpreter (pcode/)
(see the pascal-0.1.0 package)</li>
<li>NEAR and FAR addressing, and</li>
<li>Use of a Windows native toolchain in a Cygwin build environment.</li>
</ul>
<p>
The Pascal add-on it integrated but has so far been tested very little;
it is certainly at an early, pre-alpha release level.
The baseline functionality of NuttX (including recently added network)
functionality continues to mature and remains at post-beta or production level.
Extensive testing has been done for the ARM architecture using the GCC
compiler/toolchain.
Other architectures and the SDCC toolchain are also supported but not as
well exercised.
In addition to the z16f port, at least one very critical bug was found and corrected in NuttX:
The thread-specific errno value of one task was being randomly trashed when a different thread exitted.
</p>
<p>
The current release were verified only on the simulated Z80 and and host
simulation targets. As usual, any feedback about bugs or suggestions
for improvement would be greatly appreciated.
</p>
<p>
<b>NOTE</b>:
There was an error in the initial 0.3.6 release that prevented
a successful build <i>unless</i> the Pascal add-on was present. The
tarball was patched to include the fix. Make sure that you download
the nuttx-0.3.6.1.tar.gz version to avoid this problem.
This release were verified on the ZiLOG z16f2800100zcog, Neuros OSD (ARM9), and the simulation platforms.
As usual, any feedback about bugs or suggestions for improvement would be greatly appreciated.
</p>
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</p>
<p>
<b>STATUS:</b>
This is a work in progress.
The preliminary release of support for the z16f was made available in NuttX version 0.3.7.
</p>
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<pre><ul>
0.3.6 2008-01-06 Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
* Changes for use with SDCC compiler
* Added a simulated z80 target
* Fix deadlock errors when using stdio but with no buffering
* Add support for Pascal P-Code interpreter
0.3.6.1 2008-01-07 Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
* The initial 0.3.6 release including an error that prevented
building successfully if the Pascal add-on was
was not present.
</pre></ul>
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<td>
<a name="pendingchanges">Unreleased Changes</a>
</td>
</tr>
</table>
<pre><ul>
0.3.7 2008-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
0.3.7 2008-01-31 Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
* Added support for the Zilog Z16F using the Zilog Z16F2800100ZCOG
Development Kit.
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when a different task exits. Effects all architectures.
</pre></ul>
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<tr bgcolor="#e4e4e4">
<td>
<a name="pendingchanges">Unreleased Changes</a>
</td>
</tr>
</table>
<pre><ul>
0.3.8 2008-xx-xx Gregory Nutt &lt;spudmonkey@racsa.co.cr&gt;
</pre></ul>
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<td>