FPGA Random Number Generators

[megahady]

Dear All

I'm Looking for float random number generator in VHDL code.

Any suggested Code ?


Megahady,

 

[rca]

xor sequences.
but this are generally deterministic, I means same number sequence from the power-up.

 

[andre_luis]

xor sequences.
but this are generally deterministic, I means same number sequence from the power-up.

Depending on what hardware circuitry are being used and how the calculation get started, an asynchronous input could be used as a real random seed for this function, such as a clock.

 

[Dan Mills]

There is a paper kicking around on the use for coupled ring oscilators driving FSAs to produce high speed random numbers that pass the usual randomness tests.
http://forums.xilinx.com/xlnx/attachments/xlnx/EDK/27322/1/High%20Speed%20True%20Random%20Number%20Generators%20in%20Xilinx%20FPGAs.pdf

Regards, Dan.