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96 lines
4.4 KiB
HTML
96 lines
4.4 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 Syntax (Using as)</title>
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<meta name="description" content="Z80 Syntax (Using as)">
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<meta name="keywords" content="Z80 Syntax (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_002dChars.html#Z80_002dChars" rel="next" title="Z80-Chars">
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<link href="Z80-Options.html#Z80-Options" rel="prev" title="Z80 Options">
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<style type="text/css">
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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-Syntax"></a>
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<div class="header">
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<p>
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Next: <a href="Z80-Floating-Point.html#Z80-Floating-Point" accesskey="n" rel="next">Z80 Floating Point</a>, Previous: <a href="Z80-Options.html#Z80-Options" accesskey="p" rel="prev">Z80 Options</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="Syntax-34"></a>
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<h4 class="subsection">9.55.2 Syntax</h4>
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<p>The assembler syntax closely follows the ’Z80 family CPU User Manual’ by
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Zilog.
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In expressions a single ‘<samp>=</samp>’ may be used as “is equal to”
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comparison operator.
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</p>
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<p>Suffices can be used to indicate the radix of integer constants;
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‘<samp>H</samp>’ or ‘<samp>h</samp>’ for hexadecimal, ‘<samp>D</samp>’ or ‘<samp>d</samp>’ for decimal,
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‘<samp>Q</samp>’, ‘<samp>O</samp>’, ‘<samp>q</samp>’ or ‘<samp>o</samp>’ for octal, and ‘<samp>B</samp>’ for
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binary.
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</p>
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<p>The suffix ‘<samp>b</samp>’ denotes a backreference to local label.
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</p>
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<table class="menu" border="0" cellspacing="0">
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<tr><td align="left" valign="top">• <a href="Z80_002dChars.html#Z80_002dChars" accesskey="1">Z80-Chars</a>:</td><td> </td><td align="left" valign="top">Special Characters
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Z80_002dRegs.html#Z80_002dRegs" accesskey="2">Z80-Regs</a>:</td><td> </td><td align="left" valign="top">Register Names
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</td></tr>
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<tr><td align="left" valign="top">• <a href="Z80_002dCase.html#Z80_002dCase" accesskey="3">Z80-Case</a>:</td><td> </td><td align="left" valign="top">Case Sensitivity
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</td></tr>
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</table>
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</body>
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</html>
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