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<h2>
  <a name="1219542"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">crcbyte</font>
</h2><hr>


<p>
  <a name="1219543"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">calculate CRC on byte</font>
</p>


<h3>
  <a name="1219544"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Code</font>
</h3>


<p>
  <a name="1219545"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">27 F5</font>
</p>


<h3>
  <a name="1219546"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>


<p>
  <a name="1219547"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Generate a CRC (cyclic redundancy check) checksum from the most significant byte of <span class=Signal>Areg</span>. <span class=Signal>Breg</span> contains the previously accumulated checksum and <span class=Signal>Creg</span><font  face="Verdana, Arial, Helvetica, sans-serif"><b> </b></font>the polynomial divisor (or `generator'). The new CRC checksum, the polynomial remainder, is calculated by repeatedly (eight times) shifting the accumulated checksum left, shifting in successive bits from the <span class=Signal>Areg</span> and if the bit shifted out of the checksum was a 1, then the generator is exclusive-ored into the checksum.</font>
</p>


<h3>
  <a name="1224465"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Definition</font>
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<p>
  <a name="1224466"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif"><span class=Signal>Areg</span> <font face=symbol>

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