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  1. <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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  3. <!-- This file documents the GNU Assembler "as".
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  15. <title>Z80 Syntax (Using as)</title>
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  22. <link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
  23. <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
  24. <link href="Z80_002dDependent.html#Z80_002dDependent" rel="up" title="Z80-Dependent">
  25. <link href="Z80_002dChars.html#Z80_002dChars" rel="next" title="Z80-Chars">
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  56. <a name="Z80-Syntax"></a>
  57. <div class="header">
  58. <p>
  59. 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> &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>
  60. </div>
  61. <hr>
  62. <a name="Syntax-35"></a>
  63. <h4 class="subsection">9.56.2 Syntax</h4>
  64. <p>The assembler syntax closely follows the &rsquo;Z80 family CPU User Manual&rsquo; by
  65. Zilog.
  66. In expressions a single &lsquo;<samp>=</samp>&rsquo; may be used as &ldquo;is equal to&rdquo;
  67. comparison operator.
  68. </p>
  69. <p>Suffices can be used to indicate the radix of integer constants;
  70. &lsquo;<samp>H</samp>&rsquo; or &lsquo;<samp>h</samp>&rsquo; for hexadecimal, &lsquo;<samp>D</samp>&rsquo; or &lsquo;<samp>d</samp>&rsquo; for decimal,
  71. &lsquo;<samp>Q</samp>&rsquo;, &lsquo;<samp>O</samp>&rsquo;, &lsquo;<samp>q</samp>&rsquo; or &lsquo;<samp>o</samp>&rsquo; for octal, and &lsquo;<samp>B</samp>&rsquo; for
  72. binary.
  73. </p>
  74. <p>The suffix &lsquo;<samp>b</samp>&rsquo; denotes a backreference to local label.
  75. </p>
  76. <table class="menu" border="0" cellspacing="0">
  77. <tr><td align="left" valign="top">&bull; <a href="Z80_002dChars.html#Z80_002dChars" accesskey="1">Z80-Chars</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Special Characters
  78. </td></tr>
  79. <tr><td align="left" valign="top">&bull; <a href="Z80_002dRegs.html#Z80_002dRegs" accesskey="2">Z80-Regs</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Register Names
  80. </td></tr>
  81. <tr><td align="left" valign="top">&bull; <a href="Z80_002dCase.html#Z80_002dCase" accesskey="3">Z80-Case</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Case Sensitivity
  82. </td></tr>
  83. <tr><td align="left" valign="top">&bull; <a href="Z80_002dLabels.html#Z80_002dLabels" accesskey="4">Z80-Labels</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Labels
  84. </td></tr>
  85. </table>
  86. </body>
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