70 lines
3.3 KiB
HTML
70 lines
3.3 KiB
HTML
<html lang="en">
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<head>
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<title>Z80 Syntax - Using as</title>
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<link rel="up" href="Z80_002dDependent.html#Z80_002dDependent" title="Z80-Dependent">
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<link rel="prev" href="Z80-Options.html#Z80-Options" title="Z80 Options">
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<!--
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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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</head>
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<body>
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<div class="node">
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<a name="Z80-Syntax"></a>
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<p>
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Next: <a rel="next" accesskey="n" href="Z80-Floating-Point.html#Z80-Floating-Point">Z80 Floating Point</a>,
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Previous: <a rel="previous" accesskey="p" href="Z80-Options.html#Z80-Options">Z80 Options</a>,
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Up: <a rel="up" accesskey="u" href="Z80_002dDependent.html#Z80_002dDependent">Z80-Dependent</a>
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<hr>
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</div>
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<h4 class="subsection">9.56.2 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><span class="samp">=</span></samp>’ may be used as “is equal to”
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comparison operator.
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<p>Suffices can be used to indicate the radix of integer constants;
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‘<samp><span class="samp">H</span></samp>’ or ‘<samp><span class="samp">h</span></samp>’ for hexadecimal, ‘<samp><span class="samp">D</span></samp>’ or ‘<samp><span class="samp">d</span></samp>’ for decimal,
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‘<samp><span class="samp">Q</span></samp>’, ‘<samp><span class="samp">O</span></samp>’, ‘<samp><span class="samp">q</span></samp>’ or ‘<samp><span class="samp">o</span></samp>’ for octal, and ‘<samp><span class="samp">B</span></samp>’ for
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binary.
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<p>The suffix ‘<samp><span class="samp">b</span></samp>’ denotes a backreference to local label.
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<ul class="menu">
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<li><a accesskey="1" href="Z80_002dChars.html#Z80_002dChars">Z80-Chars</a>: Special Characters
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<li><a accesskey="2" href="Z80_002dRegs.html#Z80_002dRegs">Z80-Regs</a>: Register Names
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<li><a accesskey="3" href="Z80_002dCase.html#Z80_002dCase">Z80-Case</a>: Case Sensitivity
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</ul>
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</body></html>
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