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Node:<a name="D10V-Chars">D10V-Chars</a>,

Next:<a rel="next" accesskey="n" href="D10V-Regs.html#D10V-Regs">D10V-Regs</a>,

Previous:<a rel="previous" accesskey="p" href="D10V-Subs.html#D10V-Subs">D10V-Subs</a>,

Up:<a rel="up" accesskey="u" href="D10V-Syntax.html#D10V-Syntax">D10V-Syntax</a>

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<h5 class="subsection">Special Characters</h5>



   <p><code>;</code> and <code>#</code> are the line comment characters. 

Sub-instructions may be executed in order, in reverse-order, or in parallel. 

Instructions listed in the standard one-per-line format will be executed sequentially. 

To specify the executing order, use the following symbols:

     <dl>

<dt><code>-&gt;</code>

     <dd>Sequential with instruction on the left first. 

<br><dt><code>&lt;-</code>

     <dd>Sequential with instruction on the right first. 

<br><dt><code>||</code>

     <dd>Parallel

</dl>

The D10V syntax allows either one instruction per line, one instruction per line with

the execution symbol, or two instructions per line.  For example

     <dl>

<dt><code>abs       a1      -&gt;      abs     r0</code>

     <dd>Execute these sequentially.  The instruction on the right is in the right

container and is executed second. 

<br><dt><code>abs       r0      &lt;-      abs     a1</code>

     <dd>Execute these reverse-sequentially.  The instruction on the right is in the right

container, and is executed first. 

<br><dt><code>ld2w    r2,@r8+         ||      mac     a0,r0,r7</code>

     <dd>Execute these in parallel. 

<br><dt><code>ld2w    r2,@r8+         ||</code>

     <dd><dt><code>mac     a0,r0,r7</code>

     <dd>Two-line format. Execute these in parallel. 

<br><dt><code>ld2w    r2,@r8+</code>

     <dd><dt><code>mac     a0,r0,r7</code>

     <dd>Two-line format. Execute these sequentially.  Assembler will

put them in the proper containers. 

<br><dt><code>ld2w    r2,@r8+         -&gt;</code>

     <dd><dt><code>mac     a0,r0,r7</code>

     <dd>Two-line format. Execute these sequentially.  Same as above but

second instruction will always go into right container. 

</dl>

Since <code>$</code> has no special meaning, you may use it in symbol names.



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