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124 lines
4.8 KiB
HTML
124 lines
4.8 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled "GNU Free Documentation License".
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-->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Z80 Options (Using as)</title>
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<meta name="description" content="Z80 Options (Using as)">
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<meta name="keywords" content="Z80 Options (Using as)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Z80_002dDependent.html#Z80_002dDependent" rel="up" title="Z80-Dependent">
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<link href="Z80-Syntax.html#Z80-Syntax" rel="next" title="Z80 Syntax">
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<link href="Z80_002dDependent.html#Z80_002dDependent" rel="prev" title="Z80-Dependent">
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<style type="text/css">
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Z80-Options"></a>
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<div class="header">
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<p>
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Next: <a href="Z80-Syntax.html#Z80-Syntax" accesskey="n" rel="next">Z80 Syntax</a>, Up: <a href="Z80_002dDependent.html#Z80_002dDependent" accesskey="u" rel="up">Z80-Dependent</a> [<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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</div>
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<hr>
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<a name="Options-29"></a>
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<h4 class="subsection">9.55.1 Options</h4>
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<a name="index-Z80-options"></a>
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<a name="index-options-for-Z80"></a>
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<p>The Zilog Z80 and Ascii R800 version of <code>as</code> have a few machine
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dependent options.
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</p><dl compact="compact">
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<dd><a name="index-_002dz80-command_002dline-option_002c-Z80"></a>
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</dd>
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<dt><samp>-z80</samp></dt>
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<dd><p>Produce code for the Z80 processor. There are additional options to
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request warnings and error messages for undocumented instructions.
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</p></dd>
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<dt><samp>-ignore-undocumented-instructions</samp></dt>
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<dt><samp>-Wnud</samp></dt>
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<dd><p>Silently assemble undocumented Z80-instructions that have been adopted
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as documented R800-instructions.
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</p></dd>
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<dt><samp>-ignore-unportable-instructions</samp></dt>
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<dt><samp>-Wnup</samp></dt>
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<dd><p>Silently assemble all undocumented Z80-instructions.
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</p></dd>
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<dt><samp>-warn-undocumented-instructions</samp></dt>
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<dt><samp>-Wud</samp></dt>
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<dd><p>Issue warnings for undocumented Z80-instructions that work on R800, do
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not assemble other undocumented instructions without warning.
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</p></dd>
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<dt><samp>-warn-unportable-instructions</samp></dt>
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<dt><samp>-Wup</samp></dt>
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<dd><p>Issue warnings for other undocumented Z80-instructions, do not treat any
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undocumented instructions as errors.
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</p></dd>
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<dt><samp>-forbid-undocumented-instructions</samp></dt>
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<dt><samp>-Fud</samp></dt>
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<dd><p>Treat all undocumented z80-instructions as errors.
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</p></dd>
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<dt><samp>-forbid-unportable-instructions</samp></dt>
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<dt><samp>-Fup</samp></dt>
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<dd><p>Treat undocumented z80-instructions that do not work on R800 as errors.
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</p>
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<a name="index-_002dr800-command_002dline-option_002c-Z80"></a>
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</dd>
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<dt><samp>-r800</samp></dt>
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<dd><p>Produce code for the R800 processor. The assembler does not support
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undocumented instructions for the R800.
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In line with common practice, <code>as</code> uses Z80 instruction names
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for the R800 processor, as far as they exist.
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</p></dd>
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</dl>
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<a name="index-Z80-Syntax"></a>
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</body>
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</html>
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