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765 FDC

160 bytes added, 10 July
/* FDC Track Format */
[[File:FDC765 Track Format.png]]
The CRC-16 generator used by the FDC uses the classical CCITT polynomial G(x)=x^16 + x^12 + x^5 + 1.
 
Or in pseudo code:
<pre>
crc = (crc << 1) ^ 0x1021
</pre>
<br>
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