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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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<title>openMSP430 Overview</title>
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</head>
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<body>
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<br />
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<h1>Introduction</h1>
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The openMSP430 is a synthesizable 16bit microcontroller core written in Verilog. It is compatible with Texas Instruments' <b><a href="http://www.ti.com/litv/pdf/slau049f">MSP430 microcontroller family</a></b> and can execute the code generated by an MSP430 toolchain in a cycle accurate way.
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<br /><br />
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The core comes with some peripherals (<b>16x16 Hardware Multiplier</b>, GPIO, TimerA, generic templates) and most notably with a <b>Serial Debug Interface</b> supporting <b>the MSPGCC(4) GNU Debugger</b> (GDB) for in-system software debugging.
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<br /><br />
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<h1>Download</h1>
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<h3>Design</h3>
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The complete tar archive of the project can be downloaded <a href="http://www.opencores.org/download,openmsp430">here</a> (OpenCores account required).<br />
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<br />
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The following SVN command can be run from a console (or <a href="http://www.syntevo.com/smartsvn/index.html">GUI</a>):
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<br /><br />
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<table border="0" cellspacing="4" cellpadding="0">
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<tr>
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<td width="35"></td>
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<td bgcolor="#d0d0d0" width="3"></td>
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<td width="15"></td>
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<td>
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        <code>svn export http://opencores.org/ocsvn/openmsp430/openmsp430/trunk/ openmsp430</code>
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</td>
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</tr>
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</table>
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<br />
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<h3>ChangeLog</h3>
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<ul>
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   <li>The <a href="http://opencores.org/websvn,filedetails?repname=openmsp430&path=/openmsp430/trunk/ChangeLog_core.txt">Core's ChangeLog</a> lists the CPU updates.</li>
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   <li>The <a href="http://opencores.org/websvn,filedetails?repname=openmsp430&path=/openmsp430/trunk/ChangeLog_tools.txt">Tools' ChangeLog</a> lists the Software development tools updates.</li>
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   <li>Subscribe to the following <a href="http://opencores.org/websvn,rss?repname=openmsp430&path=/openmsp430/&isdir=1">RSS</a> feed to keep yourself informed about ALL updates.</i>
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</ul>
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<br />
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<h3>Documentation</h3>
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The online documentation is available as <a href="usercontent,doc,1307395772" title="openMSP430 PDF Doc. R1.9">pdf</a>.
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<br /><br />
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<h1>Features & Limitations</h1>
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<h2>Features</h2>
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<ul>
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        <li><b>Core:</b>
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        <ul>
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      <li>Full instruction set.</li>
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      <li>Interrupts: IRQs (x14), NMI (x1).</li>
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      <li>Power saving modes functionality.</li>
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      <li>Configurable memory size for both program and data.</li>
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      <li>Scalable peripheral address space.</li>
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      <li>Serial Debug Interface (Nexus class 3, w/o trace) with GDB support.</li>
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      <li>FPGA friendly (single clock domain, no clock gate).</li>
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      <li>Small size (Xilinx: 1650 LUTs / Altera: 1550 LEs / ASIC: 8k gates).</li>
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        </ul>
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        </li>
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        <br />
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        <li><b>Peripherals:</b>
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        <ul>
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      <li>16x16 Hardware Multiplier.</li>
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      <li>Basic Clock Module.</li>
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      <li>Watchdog.</li>
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      <li>Timer A.</li>
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      <li>GPIO (port 1 to 6).</li>
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      <li>Templates for 8 and 16 bit peripherals (under BSD license).</li>
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        </ul>
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        </li>
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</ul>
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<h2>Limitations</h2>
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<ul>
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        <li><b>Core:</b>
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        <ul>
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      <li>Instructions can't be executed from the data memory.</li>
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        </ul>
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        </li>
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        <br />
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        <li><b>Peripherals:</b>
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        <ul>
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      <li>Basic clock module doesn't offer the full functionality of a real MSP430.</li>
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        </ul>
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        </li>
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</ul>
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<br /><br />
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<h1>Links</h1>
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Development has been performed using the following freely available (excellent) tools:
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<ul>
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        <li><a href="http://www.icarus.com/eda/verilog/">Icarus Verilog</a>  : Verilog simulator.</li>
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        <li><a href="http://gtkwave.sourceforge.net/">GTKWave Analyzer</a>   : Waveform viewer.</li>
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        <li><a href="http://mspgcc4.sourceforge.net/">MSPGCC4</a>            : GCC toolchain for the Texas Instruments MSP430 MCUs.</li>
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        <li><a href="http://www.xilinx.com/ise/logic_design_prod/webpack.htm">ISE WebPACK</a>   : Xilinx's FPGA synthesis tool.</li>
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</ul>
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Discussion group:
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<ul>
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        <li><table border=0 style="background-color: #fff; padding: 5px;" cellspacing=0>
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       <tr><td>
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       <img src="http://groups.google.com/intl/en/images/logos/groups_logo_sm.gif"
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            height=30 width=140 alt="Google Groups">
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       </td></tr>
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       <tr><td style="padding-left: 5px">
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       <b>Subscribe to openMSP430</b>
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       </td></tr>
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       <form action="http://groups.google.com/group/discuss_openmsp430/boxsubscribe">
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       <input type=hidden name="hl" value="en">
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       <tr><td style="padding-left: 5px;">
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       Email: <input type=text name=email>
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       <input type=submit name="sub" value="Subscribe">
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       </td></tr>
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       </form>
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       <tr><td align=right>
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       <a href="http://groups.google.com/group/discuss_openmsp430?hl=en">Visit this group</a>
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       </td></tr>
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       </table>
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   </li>
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</ul>
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A few MSP430 links:
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<ul>
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        <li><a href="http://en.wikipedia.org/wiki/MSP430">Wikipedia: MSP430</a></li>
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        <li><a href="http://www.ti.com/litv/pdf/slau049f">TI: MSP430x1xx Family User's Guide</a></li>
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        <li><a href="http://processors.wiki.ti.com/index.php/Open_Source_Projects_-_MSP430">TI: a list of available MSP430 Open Source projects out there on the web today.</a></li>
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</ul>
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<br /><br />
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<h1>Legal information</h1>
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MSP430 is a trademark of Texas Instruments, Inc. This project is not affiliated in any way with Texas Instruments. All other product names are trademarks or registered trademarks of their respective owners.
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</body>
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</html>

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