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This file documents the GNU Assembler "as".
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Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002,
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2006, 2007 Free Software Foundation, Inc.
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<a name="MSP430_002dRegs"></a>Next: <a rel="next" accesskey="n" href="MSP430_002dExt.html#MSP430_002dExt">MSP430-Ext</a>,
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Previous: <a rel="previous" accesskey="p" href="MSP430_002dChars.html#MSP430_002dChars">MSP430-Chars</a>,
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Up: <a rel="up" accesskey="u" href="MSP430-Syntax.html#MSP430-Syntax">MSP430 Syntax</a>
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<h5 class="subsubsection">9.24.2.3 Register Names</h5>
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<p><a name="index-MSP-430-register-names-1328"></a><a name="index-register-names_002c-MSP-430-1329"></a>General-purpose registers are represented by predefined symbols of the
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form <span class="samp">r</span><var>N</var> (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, <span class="samp">r13</span>
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and <span class="samp">R7</span> are both valid register names.
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<p><a name="index-special-purpose-registers_002c-MSP-430-1330"></a>Register names <span class="samp">PC</span>, <span class="samp">SP</span> and <span class="samp">SR</span> cannot be used as register names
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and will be treated as variables. Use <span class="samp">r0</span>, <span class="samp">r1</span>, and <span class="samp">r2</span> instead.
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