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| <h3 class="section">9.41 IBM S/390 Dependent Features</h3> |
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| <p><a name="index-s390-support-2050"></a> |
| The s390 version of <code>as</code> supports two architectures modes |
| and eleven chip levels. The architecture modes are the Enterprise System |
| Architecture (ESA) and the newer z/Architecture mode. The chip levels |
| are g5 (or arch3), g6, z900 (or arch5), z990 (or arch6), z9-109, z9-ec |
| (or arch7), z10 (or arch8), z196 (or arch9), zEC12 (or arch10), z13 |
| (or arch11), z14 (or arch12), and arch13. |
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| <li><a accesskey="1" href="s390-Options.html#s390-Options">s390 Options</a>: Command-line Options. |
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| <li><a accesskey="4" href="s390-Directives.html#s390-Directives">s390 Directives</a>: Assembler Directives. |
| <li><a accesskey="5" href="s390-Floating-Point.html#s390-Floating-Point">s390 Floating Point</a>: Floating Point. |
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