<html lang="en"> <head> <title>H8/300 Directives - Using as</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Using as"> <meta name="generator" content="makeinfo 4.13"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="H8_002f300_002dDependent.html#H8_002f300_002dDependent" title="H8/300-Dependent"> <link rel="prev" href="H8_002f300-Floating-Point.html#H8_002f300-Floating-Point" title="H8/300 Floating Point"> <link rel="next" href="H8_002f300-Opcodes.html#H8_002f300-Opcodes" title="H8/300 Opcodes"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991-2015 Free Software Foundation, Inc. Permission is granted to copy, distribute and/or modify this document under the terms of the GNU Free Documentation License, Version 1.3 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''. --> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family:serif; font-weight:normal; } span.sansserif { font-family:sans-serif; font-weight:normal; } --></style> </head> <body> <div class="node"> <a name="H8%2f300-Directives"></a> <a name="H8_002f300-Directives"></a> <p> Next: <a rel="next" accesskey="n" href="H8_002f300-Opcodes.html#H8_002f300-Opcodes">H8/300 Opcodes</a>, Previous: <a rel="previous" accesskey="p" href="H8_002f300-Floating-Point.html#H8_002f300-Floating-Point">H8/300 Floating Point</a>, Up: <a rel="up" accesskey="u" href="H8_002f300_002dDependent.html#H8_002f300_002dDependent">H8/300-Dependent</a> <hr> </div> <h4 class="subsection">9.12.4 H8/300 Machine Directives</h4> <p><a name="index-H8_002f300-machine-directives-_0028none_0029-955"></a><a name="index-machine-directives_002c-H8_002f300-_0028none_0029-956"></a><a name="index-g_t_0040code_007bword_007d-directive_002c-H8_002f300-957"></a><a name="index-g_t_0040code_007bint_007d-directive_002c-H8_002f300-958"></a><code>as</code> has the following machine-dependent directives for the H8/300: <a name="index-H8_002f300H_002c-assembling-for-959"></a> <dl><dt><code>.h8300h</code><dd>Recognize and emit additional instructions for the H8/300H variant, and also make <code>.int</code> emit 32-bit numbers rather than the usual (16-bit) for the H8/300 family. <br><dt><code>.h8300s</code><dd>Recognize and emit additional instructions for the H8S variant, and also make <code>.int</code> emit 32-bit numbers rather than the usual (16-bit) for the H8/300 family. <br><dt><code>.h8300hn</code><dd>Recognize and emit additional instructions for the H8/300H variant in normal mode, and also make <code>.int</code> emit 32-bit numbers rather than the usual (16-bit) for the H8/300 family. <br><dt><code>.h8300sn</code><dd>Recognize and emit additional instructions for the H8S variant in normal mode, and also make <code>.int</code> emit 32-bit numbers rather than the usual (16-bit) for the H8/300 family. </dl> <p>On the H8/300 family (including the H8/300H) ‘<samp><span class="samp">.word</span></samp>’ directives generate 16-bit numbers. </body></html>