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<h1>
<a name="1001392"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Preface</font>
</h1><hr>
<h3>
<a name="1002913"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">ST20 documentation suite</font>
</h3>
<p>
<a name="1002914"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The document set provided with the toolset comprises the following documents.</font>
</p>
<h5>
<a name="1002949"> </a><i><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">OS20 User Manual (this document)</font></i>
</h5>
<p>
<a name="1002950"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This manual is a user guide for the OS20 real-time kernel. It provides an introduction and getting started section then continues with separate chapters for each of the main features supported, such as, kernel, memory and partitions management, tasks, semaphores, message handling queues, real-time clocks and interrupts.</font>
</p>
<h5>
<a name="1002915"> </a><i><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">ST20 Embedded Toolset Delivery Manual (ADCS 7257995)</font></i>
</h5>
<p>
<a name="1002916"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The delivery manual provides installation instructions, a summary of the release and a list of changes since the previous revision.</font>
</p>
<h5>
<a name="1002917"> </a><i><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">ST20 Embedded Toolset User Manual (ADCS 7143840)</font></i>
</h5>
<p>
<a name="1002918"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This manual provides an overview of the toolset and a getting started guide for using the graphical user interface. It also describes how the core features of the toolset are used to build and run application programs. It includes compiling and linking, connecting to a target, loading programs and application debugging.</font>
</p>
<h5>
<a name="1002935"> </a><i><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">ST20 Embedded Toolset Reference Manual (ADCS 7250966)</font></i>
</h5>
<p>
<a name="1002936"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">This manual describes the advanced facilities of the toolset such as the assembler, EMI tool, librarian, lister, and ST20 instruction set simulator. It also describes facilities such as code and data placement, the stack depth and memory map files, the use of relocatable code units and profiling and trace facilities. Reference information is provided for the C and C++ implementations, the libraries and the command language.</font>
</p>
<h3>
<a name="1000991"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Conventions used in this manual</font>
</h3>
<h3>
<a name="1001025"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Typographical conventions</font>
</h3>
<p>
<a name="1001223"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">The following typographical conventions are used in this manual:
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001841"> </a><div ><font size=2><font face="Verdana, Arial, Helvetica, sans-serif"><b>Bold</b></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001843"> </a><div ><font size=2>Used within text for emphasis</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1002683"> </a><div ><font size=2><font color="#0000ff" face="Verdana, Arial, Helvetica, sans-serif"><i>Blue Italic</i></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1002685"> </a><div ><font size=2>Denotes hyperlink cross-references</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1002687"> </a><div ><font size=2><em>Italic</em></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1002689"> </a><div ><font size=2>Denotes nonhyperlink cross-references</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001845"> </a><div ><font size=2><span class=Signal>UPPER CASE</span></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001847"> </a><div ><font size=2>Denotes special terminology, for example, register or signal/pin names</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1000998"> </a><div ><font size=2><font size=2 face=Courier><strong>Monotype bold</strong></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001000"> </a><div ><font size=2>Denotes command options, command line examples, code fragments, and program listings</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001709"> </a><div ><font size=2><font size=2 face=Courier><strong><em>Monotype bold italic</em></strong></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001711"> </a><div ><font size=2>Denotes arguments or parameters in command syntax definitions</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001717"> </a><div ><font size=2><font size=2 face=Courier><em>Monotype italic</em></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001707"> </a><div ><font size=2>Denotes code comments</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001006"> </a><div ><font size=2>Braces { }</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001008"> </a><div ><font size=2>Denotes a list of optional items in command syntax</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001010"> </a><div ><font size=2>Brackets [ ]</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001012"> </a><div ><font size=2>Denotes optional items in command syntax</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001014"> </a><div ><font size=2>Ellipsis <font face="Verdana, Arial, Helvetica, sans-serif"><b>...</b></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001016"> </a><div ><font size=2>In general terms, used to denote the continuation of a series. For example, in syntax definitions denotes a list of one or more items.</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001018"> </a><div ><font size=2>|</font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001020"> </a><div ><font size=2>In command syntax, separates two mutually exclusive alternatives</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1002449"> </a><div ><font size=2><font size=2 face=Courier><strong>_ _</strong></font></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1002451"> </a><div ><font size=2>Denotes two underscores together</font></div></font></td>
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<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001022"> </a><div ><font size=2><br></font></div></font></td>
<td><font face="Verdana, Arial, Helvetica, sans-serif"><a name="1001024"> </a><div ><font size=2>A change bar in the left margin indicates a change from the previous version of the manual. This may indicate a change in the functionality of the toolset or merely an updated description.</font></div></font></td>
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</p>
<h3>
<a name="1001028"> </a><font color="#003366" face="Verdana, Arial, Helvetica, sans-serif">Command line conventions</font>
</h3>
<p>
<a name="1002695"> </a><font size=2 face="Verdana, Arial, Helvetica, sans-serif">Example command lines and directory path names are documented using UNIX<sup>⌨️ 快捷键说明
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