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62 lines
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<a name="MSP430-Regs"></a>
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<a name="MSP430_002dRegs"></a>
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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">9.29.2.3 Register Names</h5>
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<p><a name="index-MSP-430-register-names-1748"></a><a name="index-register-names_002c-MSP-430-1749"></a>General-purpose registers are represented by predefined symbols of the
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form ‘<samp><span class="samp">r</span><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><span class="samp">r13</span></samp>’
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and ‘<samp><span class="samp">R7</span></samp>’ are both valid register names.
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<p><a name="index-special-purpose-registers_002c-MSP-430-1750"></a>Register names ‘<samp><span class="samp">PC</span></samp>’, ‘<samp><span class="samp">SP</span></samp>’ and ‘<samp><span class="samp">SR</span></samp>’ cannot be used as register names
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and will be treated as variables. Use ‘<samp><span class="samp">r0</span></samp>’, ‘<samp><span class="samp">r1</span></samp>’, and ‘<samp><span class="samp">r2</span></samp>’ instead.
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