Random number generation using VHDL

vhdl random number generator

Hello
Can some one tell me how to generate a random number using VHDL??

If any one can give me a reference as to how to get the following paper, it would be of great help.
ESNUG 81: A Better VHDL Random Number Generator

Thx
AKP

random number generator vhdl

Only aware of pseudo-random generators with XOR:

hxxp://www.maxim-ic.com/appnotes.cfm/appnote_number/1743/ln/en


or maybe google for "noise generator" or something similar...

vhdl random

http://www.deeps.org/hdl_models/
http://www.easics.be/webtools/crctool
**broken link removed**

procedure RANDOM (variable Seed: inout integer; variable X: out real) is
----------------------------------------------------------------------
-- Random Number generator from:
-- The Art of Computer Systems Performance Analysis, R.Jain 1991 (p443)
-- x := 7^5x(n-1) mod (2^31 - 1)
-- This has period 2^31 - 2, and it works with odd or even seeds
-- This code does not overflow for 32 bit integers.
----------------------------------------------------------------------
constant a : integer := 16807; -- multiplier 7**5
constant m : integer := 2147483647;-- modulus 2**31 - 1
constant q : integer := 127773; -- m DIV a
constant r : integer := 2836; -- m MOD a
constant m_real : real := real(M);

variable seed_div_q : integer;
variable seed_mod_q : integer;
variable new_seed : integer;

begin
seed_div_q := seed / q; -- truncating integer division
seed_mod_q := seed MOD q; -- modulus
new_seed := a * seed_mod_q - r * seed_div_q;
if (new_seed > 0) then
seed := new_seed;
else
seed := new_seed + m;
end if;
X := real(seed) / m_real;
end RANDOM;

vhdl random function

You can use LFSR method to generate p-random data

heRe is code.. the code is also synthesizable..
**broken link removed**