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<h5 class="subsection">Register names</h5>



   <p>Local and global registers are specified as <code>$0</code> to <code>$255</code>. 

The recognized special register names are <code>rJ</code>, <code>rA</code>, <code>rB</code>,

<code>rC</code>, <code>rD</code>, <code>rE</code>, <code>rF</code>, <code>rG</code>, <code>rH</code>,

<code>rI</code>, <code>rK</code>, <code>rL</code>, <code>rM</code>, <code>rN</code>, <code>rO</code>,

<code>rP</code>, <code>rQ</code>, <code>rR</code>, <code>rS</code>, <code>rT</code>, <code>rU</code>,

<code>rV</code>, <code>rW</code>, <code>rX</code>, <code>rY</code>, <code>rZ</code>, <code>rBB</code>,

<code>rTT</code>, <code>rWW</code>, <code>rXX</code>, <code>rYY</code> and <code>rZZ</code>.  A leading

<code>:</code> is optional for special register names.



   <p>Local and global symbols can be equated to register names and used in

place of ordinary registers.



   <p>Similarly for special registers, local and global symbols can be used. 

Also, symbols equated from numbers and constant expressions are allowed in

place of a special register, except when either of the options

<code>--no-predefined-syms</code> and <code>--fixed-special-register-names</code> are

specified.  Then only the special register names above are allowed for the

instructions having a special register operand; <code>GET</code> and <code>PUT</code>.



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