No.66009 作者:CAOYONGFENG 邮件:caoyongfeng@163.com ID:27595 登陆:5次 文章数:1篇 最后登陆IP:218.195.248.58 最后登陆:2005/2/21 12:32:37 注册:2004/11/11 22:40:07 财富:113 发帖时间:2004/11/11 22:50:13 发贴者IP:218.195.248.58 标题:CAOYONGFENG:一些关于Max+plusII的问题 摘要:No.66009一些关于Max+plusII的问题 这是在Max+plusII 10.23里面输入的程序,但是就是编辑不了会出现下面的问题:(在文章背后) LIBRARY IEEE; USE IEEE.STD_LOGIC_1164.ALL; ENTITY demulti_4v IS PORT( D : IN STD_LOGIC; S : IN STD_LOGIC_VECTOR(1 downto 0); Y0,Y1,Y2,Y3:OUT STD_LOGIC); END demulti_4v; ARCHITECTURE a OF demulti_4v IS BEGIN --Y0 <=NOT S(0) AND NOT S(1) AND D; Y1 <=NOT S(0) AND S(1) AND D; --Y2 <=S(0) AND NOT S(1) AND D; Y3 <=S(0) AND S(1) AND D; PROCESS(S,D) BEGIN CASE S IS WHEN "00" => ......