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  15. <title>Fill (Using as)</title>
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  56. <a name="Fill"></a>
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  58. <p>
  59. Next: <a href="Float.html#Float" accesskey="n" rel="next">Float</a>, Previous: <a href="File.html#File" accesskey="p" rel="prev">File</a>, Up: <a href="Pseudo-Ops.html#Pseudo-Ops" accesskey="u" rel="up">Pseudo Ops</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>
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  61. <hr>
  62. <a name="g_t_002efill-repeat-_002c-size-_002c-value"></a>
  63. <h3 class="section">7.36 <code>.fill <var>repeat</var> , <var>size</var> , <var>value</var></code></h3>
  64. <a name="index-fill-directive"></a>
  65. <a name="index-writing-patterns-in-memory"></a>
  66. <a name="index-patterns_002c-writing-in-memory"></a>
  67. <p><var>repeat</var>, <var>size</var> and <var>value</var> are absolute expressions.
  68. This emits <var>repeat</var> copies of <var>size</var> bytes. <var>Repeat</var>
  69. may be zero or more. <var>Size</var> may be zero or more, but if it is
  70. more than 8, then it is deemed to have the value 8, compatible with
  71. other people&rsquo;s assemblers. The contents of each <var>repeat</var> bytes
  72. is taken from an 8-byte number. The highest order 4 bytes are
  73. zero. The lowest order 4 bytes are <var>value</var> rendered in the
  74. byte-order of an integer on the computer <code>as</code> is assembling for.
  75. Each <var>size</var> bytes in a repetition is taken from the lowest order
  76. <var>size</var> bytes of this number. Again, this bizarre behavior is
  77. compatible with other people&rsquo;s assemblers.
  78. </p>
  79. <p><var>size</var> and <var>value</var> are optional.
  80. If the second comma and <var>value</var> are absent, <var>value</var> is
  81. assumed zero. If the first comma and following tokens are absent,
  82. <var>size</var> is assumed to be 1.
  83. </p>
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