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| <h5 class="subsubsection">9.57.2.2 Register Names</h5> |
| |
| <p><a name="index-Z8000-registers-2703"></a><a name="index-registers_002c-Z8000-2704"></a>The Z8000 has sixteen 16 bit registers, numbered 0 to 15. You can refer |
| to different sized groups of registers by register number, with the |
| prefix ‘<samp><span class="samp">r</span></samp>’ for 16 bit registers, ‘<samp><span class="samp">rr</span></samp>’ for 32 bit registers and |
| ‘<samp><span class="samp">rq</span></samp>’ for 64 bit registers. You can also refer to the contents of |
| the first eight (of the sixteen 16 bit registers) by bytes. They are |
| named ‘<samp><span class="samp">rl</span><var>n</var></samp>’ and ‘<samp><span class="samp">rh</span><var>n</var></samp>’. |
| |
| <pre class="smallexample"><br><em>byte registers</em><br> |
| rl0 rh0 rl1 rh1 rl2 rh2 rl3 rh3 |
| rl4 rh4 rl5 rh5 rl6 rh6 rl7 rh7 |
| |
| <br><em>word registers</em><br> |
| r0 r1 r2 r3 r4 r5 r6 r7 r8 r9 r10 r11 r12 r13 r14 r15 |
| |
| <br><em>long word registers</em><br> |
| rr0 rr2 rr4 rr6 rr8 rr10 rr12 rr14 |
| |
| <br><em>quad word registers</em><br> |
| rq0 rq4 rq8 rq12 |
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