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<span class="bold">游客:  </span><a href="http://www.zdnet.com.cn/zdnet/register.php?forward=http%3A%2F%2Fbbs.zdnet.com.cn%2Fthread-99103-1-1.html">注册</a>| <a href="http://www.zdnet.com.cn/zdnet/rms_login.php?forward=http%3A%2F%2Fbbs.zdnet.com.cn%2Fthread-99103-1-1.html">登录</a>| <a href="member.php?action=list">会员</a> | <a href="search.php">搜索</a>         | <span id="plugins" onmouseover="showMenu(this.id)"><a href="#"><img src=http://bbs.zdnet.com.cn/imgs/newpic.gif>论坛设施</a><img alt="" title="" src="images/default/jsmenu.gif" border="0"></span>| <a href="faq.php">帮助</a></div></div></div><div class="maintable"><br> <div class="subtable nav" style="width:98%"><span id="forumlist" onmouseover="showMenu(this.id)"><a href="index.php">ZDNetChina中文社区</a></span> &raquo; <a href="forum-367-1.html">supertest</a> &raquo; 求:EDA VHDL 交通灯程序,高手来帮我啊!!!!!!</div><br></div><div class="maintable"><table width="98%" cellspacing="0" cellpadding="0" align="center" style="clear: both;"><tr><td valign="bottom"><div style="margin-bottom: 2px"><a href="redirect.php?fid=367&amp;tid=99103&amp;goto=nextoldset" style="font-weight: normal"> &#8249;&#8249; 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border-bottom: none"><table cellspacing="0" cellpadding="2" width="100%" align="center"><tr class="header"><td colspan="2" style="color: #154BA0"><div class="right" style="font-weight: normal"><a href="viewthread.php?action=printable&amp;tid=99103" target="_blank">打印</a> |<a href="misc.php?action=emailfriend&amp;tid=99103">推荐</a> |<a href="my.php?item=subscriptions&amp;subadd=99103" id="ajax_subscription" onclick="ajaxmenu(event, this.id)">订阅</a> |<a href="my.php?item=favorites&amp;tid=99103" id="ajax_favorite" onclick="ajaxmenu(event, this.id)">收藏</a></div>标题:求:EDA VHDL 交通灯程序,高手来帮我啊!!!!!!</td></tr></table></div><form method="post" name="delpost" action="topicadmin.php?action=delpost&amp;fid=367&amp;tid=99103&amp;page=1"><input type="hidden" name="formhash" value="50c509eb"><div class="spaceborder" style="width: 98%; margin-bottom: 4px; border-top: none"><table cellspacing="0" cellpadding="2" width="100%" align="center" class="t_row"><tr style="height: 100%"><td width="18%" valign="top" class="t_user"><a name="pid234137"></a>  <a name="lastpost"></a><a href="space-uid-230269.html" target="_blank" class="bold">kevenking</a><br><div class="smalltxt">管理员<br><img src="images/default/star_level3.gif" alt="Rank: 9" /><img src="images/default/star_level3.gif" alt="Rank: 9" /><img src="images/default/star_level1.gif" alt="Rank: 9" /><br><br><br><br>UID 230269<br>精华 0<br>积分 10467<br>帖子 993<br>威望 4965 <br>ZD币 993 元<br>阅读权限 255<br>注册 2007-3-23<br>状态 离线</div></td><td width="82%" valign="top" style="padding: 0px"><table border="0" cellspacing="0" cellpadding="2" class="t_msg"><tr><td><div> <div class="right t_number">        <span class="bold">&nbsp;                <a href="###" class="bold" title="复制帖子链接到剪贴板" onclick="setcopy('http://bbs.zdnet.com.cn/viewthread.php?tid=99103&page=1#pid234137', '已经复制到剪贴板')"><font color=red>楼主</font></a>                </span>        </div><div class="right" style="padding-top: 2px;"><a href="magic.php?action=user&amp;pid=234137" target="_blank">使用道具</a>&nbsp;&nbsp;</div><div style="padding-top: 2px;">发表于 2007-8-27 02:30 PM&nbsp;<a href="profile-uid-230269.html" target="_blank">资料</a>&nbsp;<a href="http://space.zdnet.com.cn/?uid/230269" target="_blank">个人空间</a>&nbsp;<a href="pm.php?action=send&amp;uid=230269" target="_blank">短消息</a>&nbsp;<a href="memcp.php?action=buddylist&amp;newbuddyid=230269&amp;buddysubmit=yes" target="_blank" id="ajax_buddy_0" onclick="ajaxmenu(event, this.id)">加为好友</a>&nbsp;</div></div></td></tr><tr><td valign="top" class="line" height="100%" style="padding-top: 10px;">        <iframe id="innerframe" border="0" marginwidth="0" frameborder="0" height="76" marginheight="0" noResize="" style="float:right;margin-top:0px" scrolling="no" name="innerframe" framespacing="0" vspace="0" src="digg.php?id=99103" width="56"></iframe>        <div style="float: right" align="right"><a href="misc.php?action=viewratings&amp;tid=99103&amp;pid=234137" title="评分 0"></a></div><div align="right">        <script language="JavaScript">        <!--        function copyUrl(url){        var content='';        window.clipboardData.setData("Text",url);        alert("复制成功,请粘贴到你的QQ/MSN上推荐给你的好友");        }//-->        </script><a href="javascript:copyUrl('求:EDA VHDL 交通灯程序,高手来帮我啊!!!!!!\nhttp://bbs.zdnet.com.cn/viewthread.php?tid=99103')"><img src="images/copy.gif" border="0"></a>        </div><h1>求:EDA VHDL 交通灯程序,高手来帮我啊!!!!!!</h1><div id="message234137" class="t_msgfont">求:EDA&nbsp; &nbsp;VHDL&nbsp; &nbsp;交通灯程序,高手来帮我啊!!!!!!&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;要求:&nbsp; &nbsp;&nbsp; &nbsp;A&nbsp; &nbsp;方向为主干道,B&nbsp; &nbsp;为支干道。分设红(R),黄(Y),绿(G),和左拐(L)。1表示灯亮,0表示灯灭。四灯的亮的顺序和时间长短为:A&nbsp; &nbsp;方向:绿灯(40秒)--&gt;黄灯(5秒)--&gt;左拐灯(15秒)--&gt;黄灯(5秒)--&gt;红灯(55秒)。B&nbsp; &nbsp;方向:红灯(65秒)--&gt;绿灯(30秒)--&gt;黄灯(5秒)--&gt;左拐灯(15秒)--&gt;黄灯(5秒)。时间要想改变只要改变计数器的预知数即可。&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;信号定义和说明:&nbsp; &nbsp;&nbsp; &nbsp;CLK&nbsp; &nbsp;:步时钟&nbsp; &nbsp;&nbsp; &nbsp;EN&nbsp; &nbsp;:使能信号,为1,则控制器开始工作&nbsp; &nbsp;&nbsp; &nbsp;LAMPA[3:0]:控制A方向的4盏灯的亮灭;其中LAMPA(0)到LAMPA(3)分别控制A方向的左拐灯,绿灯,黄灯和红灯。&nbsp; &nbsp;&nbsp; &nbsp;LAMPB[3:0]:控制B方向的4盏灯的亮灭;其中LAMPB(0)到LAMPB(3)分别控制B方向的左拐灯,绿灯,黄灯和红灯。&nbsp; &nbsp;&nbsp; &nbsp;ACOUNT[7:0]:用于A方向的交通灯的时间显示,宽8位,可驱动2个数码管。&nbsp; &nbsp;&nbsp; &nbsp;BCOUNT[7:0]:用于B方向的交通灯的时间显示,宽8位,可驱动2个数码管。&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;&nbsp; &nbsp;上面是我毕业设计中的一部分。希望高手们帮帮我,给我做出来,谢谢了!!!</div><br><font style="color: #333333; font: 12px Tahoma, Verdana"></font><script language=javascript>document.body.oncopy=function(){event.returnValue=false;var t=document.selection.createRange().text;var s="本贴来自ZDNetChina中文社区 http://bbs.zdnet.com.cn ,本贴地址:http://bbs.zdnet.com.cn/viewthread.php?tid=99103";clipboardData.setData('Text','\r\n'+t+'\r\n'+s+'\r\n\r\n\r\n\r\n');}</script></td></tr><tr><td align="right"><a href="###" onclick="scroll(0,0)"><img src="images/default/top.gif" border="0" alt="顶部" /></a></td></tr></table></td></tr></table></div></form></div><div class="maintable" style="clear:both"><table width="98%" cellspacing="0" cellpadding="0" align="center"><tr><td valign="top"></td><td width="40%" align="right">

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