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microwatt/random.vhdl

31 lines
643 B
VHDL

library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
library work;
use work.glibc_random.all;
entity random is
port (
clk : in std_ulogic;
data : out std_ulogic_vector(63 downto 0);
raw : out std_ulogic_vector(63 downto 0);
err : out std_ulogic
);
end entity random;
architecture behaviour of random is
begin
err <= '0';
process(clk)
variable rand : std_ulogic_vector(63 downto 0);
begin
if rising_edge(clk) then
rand := pseudorand(64);
data <= rand;
raw <= rand;
end if;
end process;
end behaviour;