1 2 3 4 5 6 7 8 9 10 11 12 13 14
library ieee; use ieee.std_logic_1164.all; entity ent2 is port ( i: in bit_vector(3 downto 0); o: out std_ulogic_vector(3 downto 0) ); end entity; architecture arch of ent2 is begin o <= to_stdulogicvector(i); end architecture;