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我一直在尝试使用带配置单元的测试台。我有以下代码:VHDL测试台,配置单元
LIBRARY IEEE;
USE IEEE.std_logic_1164.ALL;
ENTITY AND_2 IS
PORT (
a,b : IN std_logic;
x : OUT std_logic
);
END ENTITY AND_2;
ARCHITECTURE EX_1 OF AND_2 IS
BEGIN
x <= a and b;
END ARCHITECTURE EX_1;
ARCHITECTURE EX_2 OF AND_2 IS
SIGNAL ab : std_logic_vector(1 DOWNTO 0);
BEGIN
ab <= (a & b);
WITH ab SELECT
x <= '1' WHEN "11",
'0' WHEN OTHERS;
END ARCHITECTURE EX_2;
LIBRARY IEEE;
USE IEEE.std_logic_1164.ALL;
ENTITY TEST_AND_2 IS
END ENTITY TEST_AND_2;
ARCHITECTURE IO OF TEST_AND_2 IS
SIGNAL a, b, x : std_logic;
BEGIN
G1 : ENTITY work.AND_2(EX_1) PORT MAP (a => a, b => b, x => x);
a <= '0', '1' AFTER 100 NS;
b <= '0', '1' AFTER 200 NS;
END ARCHITECTURE IO;
CONFIGURATION TESTER1 OF TEST_AND_2 IS
FOR IO
FOR G1 : AND_2
USE ENTITY work.AND_2(EX_1);
END FOR;
END FOR;
END CONFIGURATION TESTER1;
我编译时麻烦接收回来以下消息:
错误(10482):在AND_2.vhd VHDL错误(48):对象 “AND_2” 是已使用但未声明
我正在阅读的书不明确在使用测试台或配置单元时。有人能指出这个错误吗?但很明显,它可能是。 非常感谢 d
工作了一个款待....谢谢 – hoboBob
@DanielJHall如果答案解决了你的问题是正常的事情是把它标记为接受http://stackoverflow.com/help/someone-answers –