<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <!-- This file documents the GNU Assembler "as". Copyright (C) 1991-2019 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". --> <!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ --> <head> <title>H8/300 Directives (Using as)</title> <meta name="description" content="H8/300 Directives (Using as)"> <meta name="keywords" content="H8/300 Directives (Using as)"> <meta name="resource-type" content="document"> <meta name="distribution" content="global"> <meta name="Generator" content="makeinfo"> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <link href="index.html#Top" rel="start" title="Top"> <link href="AS-Index.html#AS-Index" rel="index" title="AS Index"> <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> <link href="H8_002f300_002dDependent.html#H8_002f300_002dDependent" rel="up" title="H8/300-Dependent"> <link href="H8_002f300-Opcodes.html#H8_002f300-Opcodes" rel="next" title="H8/300 Opcodes"> <link href="H8_002f300-Floating-Point.html#H8_002f300-Floating-Point" rel="prev" title="H8/300 Floating Point"> <style type="text/css"> <!-- a.summary-letter {text-decoration: none} blockquote.indentedblock {margin-right: 0em} blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} blockquote.smallquotation {font-size: smaller} div.display {margin-left: 3.2em} div.example {margin-left: 3.2em} div.lisp {margin-left: 3.2em} div.smalldisplay {margin-left: 3.2em} div.smallexample {margin-left: 3.2em} div.smalllisp {margin-left: 3.2em} kbd {font-style: oblique} pre.display {font-family: inherit} pre.format {font-family: inherit} pre.menu-comment {font-family: serif} pre.menu-preformatted {font-family: serif} pre.smalldisplay {font-family: inherit; font-size: smaller} pre.smallexample {font-size: smaller} pre.smallformat {font-family: inherit; font-size: smaller} pre.smalllisp {font-size: smaller} span.nolinebreak {white-space: nowrap} span.roman {font-family: initial; font-weight: normal} span.sansserif {font-family: sans-serif; font-weight: normal} ul.no-bullet {list-style: none} --> </style> </head> <body lang="en"> <a name="H8_002f300-Directives"></a> <div class="header"> <p> Next: <a href="H8_002f300-Opcodes.html#H8_002f300-Opcodes" accesskey="n" rel="next">H8/300 Opcodes</a>, Previous: <a href="H8_002f300-Floating-Point.html#H8_002f300-Floating-Point" accesskey="p" rel="prev">H8/300 Floating Point</a>, Up: <a href="H8_002f300_002dDependent.html#H8_002f300_002dDependent" accesskey="u" rel="up">H8/300-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> </div> <hr> <a name="H8_002f300-Machine-Directives"></a> <h4 class="subsection">9.13.4 H8/300 Machine Directives</h4> <a name="index-H8_002f300-machine-directives-_0028none_0029"></a> <a name="index-machine-directives_002c-H8_002f300-_0028none_0029"></a> <a name="index-word-directive_002c-H8_002f300"></a> <a name="index-int-directive_002c-H8_002f300"></a> <p><code>as</code> has the following machine-dependent directives for the H8/300: </p> <dl compact="compact"> <dd><a name="index-H8_002f300H_002c-assembling-for"></a> </dd> <dt><code>.h8300h</code></dt> <dd><p>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. </p> </dd> <dt><code>.h8300s</code></dt> <dd><p>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. </p> </dd> <dt><code>.h8300hn</code></dt> <dd><p>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. </p> </dd> <dt><code>.h8300sn</code></dt> <dd><p>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. </p></dd> </dl> <p>On the H8/300 family (including the H8/300H) ‘<samp>.word</samp>’ directives generate 16-bit numbers. </p> </body> </html>