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<title>Using as: S12Z Options</title>

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<a name="S12Z-Options"></a>
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<p>
Next: <a href="S12Z-Syntax.html#S12Z-Syntax" accesskey="n" rel="next">S12Z Syntax</a>, Up: <a href="S12Z_002dDependent.html#S12Z_002dDependent" accesskey="u" rel="up">S12Z-Dependent</a> &nbsp; [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p>
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<a name="S12Z-Options-1"></a>
<h4 class="subsection">9.24.1 S12Z Options</h4>

<a name="index-options_002c-S12Z"></a>
<a name="index-S12Z-options"></a>

<p>The S12Z version of <code>as</code> recognizes the following options:
</p>
<dl compact="compact">
<dt>&lsquo;<samp>-mreg-prefix=<var>prefix</var></samp>&rsquo;</dt>
<dd><a name="index-_002dmreg_002dprefix_003dprefix-option_002c-reg_002dprefix"></a>
<p>You can use the &lsquo;<samp>-mreg-prefix=<var>pfx</var></samp>&rsquo; option to indicate
that the assembler should expect all register names to be prefixed with the
string <var>pfx</var>.
</p>
<p>For an explanation of what this means and why it might be needed,
see <a href="S12Z-Register-Notation.html#S12Z-Register-Notation">S12Z Register Notation</a>.
</p>

</dd>
<dt>&lsquo;<samp>-mdollar-hex</samp>&rsquo;</dt>
<dd><a name="index-_002dmdollar_002dhex-option_002c-dollar_002dhex"></a>
<a name="index-hexadecimal-prefix_002c-S12Z"></a>
<p>The &lsquo;<samp>-mdollar-hex</samp>&rsquo; option affects the way that literal hexadecimal constants
are represented.  When this option is specified, the assembler will consider
the &lsquo;<samp>$</samp>&rsquo; character as the start of a hexadecimal integer constant.  Without
this option, the standard value of &lsquo;<samp>0x</samp>&rsquo; is expected.
</p>
<p>If you use this option, then you cannot have symbol names starting with &lsquo;<samp>$</samp>&rsquo;.
&lsquo;<samp>-mdollar-hex</samp>&rsquo; is implied if the &lsquo;<samp>--traditional-format</samp>&rsquo;
(see <a href="traditional_002dformat.html#traditional_002dformat">traditional-format</a>) is used.
</p></dd>
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