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| <h5 class="subsubsection">9.4.2.2 Register Names</h5> |
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| <p><a name="index-AVR-register-names-673"></a><a name="index-register-names_002c-AVR-674"></a> |
| The AVR has 32 x 8-bit general purpose working registers ‘<samp><span class="samp">r0</span></samp>’, |
| ‘<samp><span class="samp">r1</span></samp>’, ... ‘<samp><span class="samp">r31</span></samp>’. |
| Six of the 32 registers can be used as three 16-bit indirect address |
| register pointers for Data Space addressing. One of the these address |
| pointers can also be used as an address pointer for look up tables in |
| Flash program memory. These added function registers are the 16-bit |
| ‘<samp><span class="samp">X</span></samp>’, ‘<samp><span class="samp">Y</span></samp>’ and ‘<samp><span class="samp">Z</span></samp>’ - registers. |
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| <pre class="smallexample"> X = <span class="roman">r26:r27</span> |
| Y = <span class="roman">r28:r29</span> |
| Z = <span class="roman">r30:r31</span> |
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