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<h5 class="subsection">Register Names</h5>
<p>You can use the predefined symbols <code>r0</code> through <code>r63</code> to refer
to the D30V registers. You can also use <code>sp</code> as an alias for
<code>r63</code> and <code>link</code> as an alias for <code>r62</code>. The accumulators
are <code>a0</code> and <code>a1</code>.
<p>The D30V also has predefined symbols for these control registers and status bits:
<dl>
<dt><code>psw</code>
<dd>Processor Status Word
<br><dt><code>bpsw</code>
<dd>Backup Processor Status Word
<br><dt><code>pc</code>
<dd>Program Counter
<br><dt><code>bpc</code>
<dd>Backup Program Counter
<br><dt><code>rpt_c</code>
<dd>Repeat Count
<br><dt><code>rpt_s</code>
<dd>Repeat Start address
<br><dt><code>rpt_e</code>
<dd>Repeat End address
<br><dt><code>mod_s</code>
<dd>Modulo Start address
<br><dt><code>mod_e</code>
<dd>Modulo End address
<br><dt><code>iba</code>
<dd>Instruction Break Address
<br><dt><code>f0</code>
<dd>Flag 0
<br><dt><code>f1</code>
<dd>Flag 1
<br><dt><code>f2</code>
<dd>Flag 2
<br><dt><code>f3</code>
<dd>Flag 3
<br><dt><code>f4</code>
<dd>Flag 4
<br><dt><code>f5</code>
<dd>Flag 5
<br><dt><code>f6</code>
<dd>Flag 6
<br><dt><code>f7</code>
<dd>Flag 7
<br><dt><code>s</code>
<dd>Same as flag 4 (saturation flag)
<br><dt><code>v</code>
<dd>Same as flag 5 (overflow flag)
<br><dt><code>va</code>
<dd>Same as flag 6 (sticky overflow flag)
<br><dt><code>c</code>
<dd>Same as flag 7 (carry/borrow flag)
<br><dt><code>b</code>
<dd>Same as flag 7 (carry/borrow flag)
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