compare1.vhd

VHDL子程序集,包括各种例程资料以及源码.

--**********************************
--*  Comparator (WHEN ..... ELSE)  *
--*      Filename : COMPARE1       *
--**********************************

library IEEE;
use IEEE.std_logic_1164.all;

entity COMPARE1 is
    port (
          A: in STD_LOGIC;
          B: in STD_LOGIC;
          F: out STD_LOGIC_VECTOR(2 downto 0)
          );
end COMPARE1;

architecture COMPARE1_arch of COMPARE1 is

begin
    F <= "100" when A > B else 
         "010" when A < B else
         "001";  
end COMPARE1_arch;