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<h3 class="section"><code>.equiv </code><var>symbol</var><code>, </code><var>expression</var><code></code></h3>



   <p>The <code>.equiv</code> directive is like <code>.equ</code> and <code>.set</code>, except that

the assembler will signal an error if <var>symbol</var> is already defined.



   <p>Except for the contents of the error message, this is roughly equivalent to

<pre class="smallexample">     .ifdef SYM

     .err

     .endif

     .equ SYM,VAL

     </pre>



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