时间戳

首页 > 解决方案 > vhdl 错误：在“梯子”附近：（vcom-1576）期待 IS。#

vhdl - vhdl 错误：在“梯子”附近：（vcom-1576）期待 IS。#

问题描述

在“梯子”附近：(vcom-1576) 期待 IS。在“梯子”附近：(vcom-1576) 期待 IS。在“梯子”附近：(vcom-1576) 期待 IS。在“梯子”附近：(vcom-1576) 期待 IS。在“梯子”附近：(vcom-1576) 期待 IS。

LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.std_logic_arith.ALL;



ENTITY tb ladder IS

END tb ladder;
ARCHITECTURE behavior OF tb ladder  IS

COMPONENT ladder

PORT(A : IN std_logic_vector(3 downto 0);
     B : IN std_logic_vector(3 downto 0);
     CIN : IN std_logic;
     SUM : OUT std_logic_vector(3 downto 0);
     COUT : OUT std_logic
     );
END COMPONENT;


signal A : std_logic_vector(3 downto 0) := (others => '0100');
signal B : std_logic_vector(3 downto 0) := (others => '1001');
signal CIN : std_logic := '0';
signal SUM : std_logic_vector(3 downto 0);
signal COUT : std_logic;


BEGIN


uut: ladder PORT MAP (
A => A,
B => B,
CIN => CIN,
SUM => SUM,
COUT => COUT
);

stim_proc: process begin

wait for 2 ns;
A <= "0100";
wait for 5 ns;
B <= "1001";
wait for 3 ns;
CIN <= "O";

wait for 2 ns;
A <= "1101";
wait for 5 ns;
B <= "0011";
wait for 3 ns;
CIN <= "1";

wait for 2 ns;
A <= "0100";
wait for 5 ns;
B <= "0110";
wait for 3 ns;
CIN <= "0";

wait for 2 ns;
A <= "1101";
wait for 5 ns;
B <= "1100";
wait for 3 ns;
CIN <= "1";

wait for 2 ns;
A <= "0100";
wait for 5 ns;
B <= "1001";
wait for 3 ns;
CIN <= "0";

end process;

END ;

所以，我的错误是：

错误：C:\Modeltech_pe_edu_10.4a\examples\tb ladder.vhd(7)：在“梯子”附近：(vcom-1576) 期待 IS。

如果您知道我的错误，请为我更正我的代码。

标签： vhdl

解决方案

实体名称必须是一个单词。你有tb ladder并且编译器期望有一个单词后跟IS. 使用类似的名称tb_ladder来解决此问题。

推荐阅读