Help about Random Number Generater function

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I just start a project that need use some kind of random number generator function

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Read this:

http://www.ovro.caltech.edu/~dwh/correlator/pdf/lfsr_tutorial.pdf

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but I failed to convert into a VHDL entity, could anyone give some suggestion how should do that?

This is the funtion:

unsigned F8(unsigned x)

{

x=(x*3+3)&0xFF;

x=x^(11);

return x;

}

Thank U guys

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That's not VHDL.

Cheers,

Dave