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<title>Virtual Machine Specification - avram - a virtual machine code interpreter</title>
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<h2 class="chapter">2 Virtual Machine Specification</h2>

<p>This chapter contains a description of the virtual machine implemented
by <code>avram</code>, from the point of view of a person wishing to write a
compiler that generates code for it. Before reading this chapter,
readers should at least skim <a href="User-Manual.html#User-Manual">User Manual</a> in order to see the big
picture. Topics covered in this chapter include data representations,
virtual code semantics, and file formats. A toy programming language is
introduced for illustrative purposes. The sections in this chapter might
not make sense if read out of order the first time through.

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<li><a accesskey="1" href="Raw-Material.html#Raw-Material">Raw Material</a>
<li><a accesskey="2" href="Concrete-Syntax.html#Concrete-Syntax">Concrete Syntax</a>
<li><a accesskey="3" href="File-Format.html#File-Format">File Format</a>
<li><a accesskey="4" href="Representation-of-Numeric-and-Textual-Data.html#Representation-of-Numeric-and-Textual-Data">Representation of Numeric and Textual Data</a>
<li><a accesskey="5" href="Filter-Mode-Interface.html#Filter-Mode-Interface">Filter Mode Interface</a>
<li><a accesskey="6" href="Parameter-Mode-Interface.html#Parameter-Mode-Interface">Parameter Mode Interface</a>
<li><a accesskey="7" href="Virtual-Code-Semantics.html#Virtual-Code-Semantics">Virtual Code Semantics</a>
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