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- UID
- 137162
- 性别
- 男
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LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
PACKAGE abc IS
function max (a,b,c:in std_logic_vector)
return std_logic_vector;
END abc;
PACKAGE body abc IS
function max (a,b,c:in std_logic_vector)
return std_logic_vector is
begin
if a>b then
if a>c then return a;
else return c;
end if;
else if b>c then return b;
else return c;
end if;
end if;
end function max;
END abc;
LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE work.abc.ALL;
ENTITY amax IS
 ORT(
a1,a2,a3 : IN STD_LOGIC_vector(3 downto 0);
b1,b2,b3: IN STD_LOGIC_VECTOR(3 downto 0);
y1, y2: OUT STD_LOGIC_vector(3 downto 0));
END amax;
ARCHITECTURE a OF amax IS
BEGIN
pro1:
PROCESS (a1,a2,a3)
BEGIN
y1<=max(a1,a2,a3);
END PROCESS ;
pro2:
PROCESS (b1,b2,b3)
BEGIN
y1<=max (b1,b2,b3);
END PROCESS ;
END a;
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