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<h5 class="subsection">Register Names</h5>



   <p>You can use the predefined symbols <code>r0</code> through <code>r15</code> to refer to the D10V

registers.  You can also use <code>sp</code> as an alias for <code>r15</code>.  The accumulators

are <code>a0</code> and <code>a1</code>.  There are special register-pair names that may

optionally be used in opcodes that require even-numbered registers. Register names are

not case sensitive.



   <p>Register Pairs

     <dl>

<dt><code>r0-r1</code>

     <dd><br><dt><code>r2-r3</code>

     <dd><br><dt><code>r4-r5</code>

     <dd><br><dt><code>r6-r7</code>

     <dd><br><dt><code>r8-r9</code>

     <dd><br><dt><code>r10-r11</code>

     <dd><br><dt><code>r12-r13</code>

     <dd><br><dt><code>r14-r15</code>

     <dd></dl>



   <p>The D10V 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>c</code>

     <dd>Carry flag

</dl>



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