90 lines
4.0 KiB
HTML
90 lines
4.0 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- This file documents the GNU Assembler "as".
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Copyright (C) 1991-2016 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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section entitled "GNU Free Documentation License".
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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Using as: MSP430-Regs</title>
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<meta name="description" content="Using as: MSP430-Regs">
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<meta name="keywords" content="Using as: MSP430-Regs">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="AS-Index.html#AS-Index" rel="index" title="AS Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="MSP430-Syntax.html#MSP430-Syntax" rel="up" title="MSP430 Syntax">
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<link href="MSP430_002dExt.html#MSP430_002dExt" rel="next" title="MSP430-Ext">
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<link href="MSP430_002dChars.html#MSP430_002dChars" rel="prev" title="MSP430-Chars">
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</style>
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</head>
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<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="MSP430_002dRegs"></a>
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<div class="header">
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<p>
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Next: <a href="MSP430_002dExt.html#MSP430_002dExt" accesskey="n" rel="next">MSP430-Ext</a>, Previous: <a href="MSP430_002dChars.html#MSP430_002dChars" accesskey="p" rel="prev">MSP430-Chars</a>, Up: <a href="MSP430-Syntax.html#MSP430-Syntax" accesskey="u" rel="up">MSP430 Syntax</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>
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</div>
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<hr>
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<a name="Register-Names-11"></a>
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<h4 class="subsubsection">9.29.2.3 Register Names</h4>
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<a name="index-MSP-430-register-names"></a>
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<a name="index-register-names_002c-MSP-430"></a>
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<p>General-purpose registers are represented by predefined symbols of the
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form ‘<samp>r<var>N</var></samp>’ (for global registers), where <var>N</var> represents
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a number between <code>0</code> and <code>15</code>. The leading
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letters may be in either upper or lower case; for example, ‘<samp>r13</samp>’
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and ‘<samp>R7</samp>’ are both valid register names.
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</p>
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<a name="index-special-purpose-registers_002c-MSP-430"></a>
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<p>Register names ‘<samp>PC</samp>’, ‘<samp>SP</samp>’ and ‘<samp>SR</samp>’ cannot be used as register names
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and will be treated as variables. Use ‘<samp>r0</samp>’, ‘<samp>r1</samp>’, and ‘<samp>r2</samp>’ instead.
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</p>
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</body>
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</html>
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