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<title>Using as: Z8000-Dependent</title>
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<a name="Z8000_002dDependent"></a>
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Next: <a href="Vax_002dDependent.html#Vax_002dDependent" accesskey="n" rel="next">Vax-Dependent</a>, Previous: <a href="Z80_002dDependent.html#Z80_002dDependent" accesskey="p" rel="prev">Z80-Dependent</a>, Up: <a href="Machine-Dependencies.html#Machine-Dependencies" accesskey="u" rel="up">Machine Dependencies</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="Z8000-Dependent-Features"></a>
<h3 class="section">9.47 Z8000 Dependent Features</h3>
<a name="index-Z8000-support"></a>
<p>The Z8000 as supports both members of the Z8000 family: the
unsegmented Z8002, with 16 bit addresses, and the segmented Z8001 with
24 bit addresses.
</p>
<p>When the assembler is in unsegmented mode (specified with the
<code>unsegm</code> directive), an address takes up one word (16 bit)
sized register. When the assembler is in segmented mode (specified with
the <code>segm</code> directive), a 24-bit address takes up a long (32 bit)
register. See <a href="Z8000-Directives.html#Z8000-Directives">Assembler Directives for the Z8000</a>,
for a list of other Z8000 specific assembler directives.
</p>
<table class="menu" border="0" cellspacing="0">
<tr><td align="left" valign="top">&bull; <a href="Z8000-Options.html#Z8000-Options" accesskey="1">Z8000 Options</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Command-line options for the Z8000
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Z8000-Syntax.html#Z8000-Syntax" accesskey="2">Z8000 Syntax</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Assembler syntax for the Z8000
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Z8000-Directives.html#Z8000-Directives" accesskey="3">Z8000 Directives</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Special directives for the Z8000
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Z8000-Opcodes.html#Z8000-Opcodes" accesskey="4">Z8000 Opcodes</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Opcodes
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