📄 00432.html
字号:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Frameset//EN">
<html>
<head>
<title>30.6 Usage extensions to VPI routines</title>
<meta http-equiv="Content-Type" content="text/html; charset=GB2312" />
<meta name="generator" content="Doc-O-Matic" />
<meta http-equiv="Content-Style-Type" content="text/css" />
<link rel="STYLESHEET" href="default.css" type="text/css" />
<script type="text/javascript" src="scripts.js"></script>
</head>
<body class="Element700" onload="onBodyLoadEx('systemverilog31a.html', 'topic', '00432.html');" onmousedown="onBodyMouseDown();">
<!-- Begin Popups -->
<div class="Element801" id="popup00570">
<div class="Element800">
<div class="Element14">
链接</div>
<div class="Element11">
<div class="Element10">
<a href="00862.html" target="topic">第三十章 SystemVerilog数据读API</a></div>
</div>
</div>
</div>
<!-- End Popups -->
<!-- Begin Page Header -->
<div class="Element710" id="areafixed">
<div class="Element92">
<table width="100%" cellspacing="0" cellpadding="0">
<tr><td width="33%">
<div class="Element1">
<a href="#" onmousedown="showPopup(this, 'popup00570');"><img src="seealsolink.png" border="0" alt="" title=""></a> SystemVerilog 3.1a语言参考手册</div>
</td><td width="34%">
<div class="Element2">
</div>
</td><td width="33%">
<div class="Element90">
<a href="00431.html" target="topic"><img src="btn_prev_lightblue.gif" border="0" alt="Previous" title="Previous" onmouseover="switchImage(this, 'btn_prev_lightblue_hover.gif');" onmouseout="switchImage(this, 'btn_prev_lightblue.gif');"></a><a href="00862.html" target="topic"><img src="btn_up_lightblue.gif" border="0" alt="Up" title="Up" onmouseover="switchImage(this, 'btn_up_lightblue_hover.gif');" onmouseout="switchImage(this, 'btn_up_lightblue.gif');"></a><a href="00433.html" target="topic"><img src="btn_next_lightblue.gif" border="0" alt="Next" title="Next" onmouseover="switchImage(this, 'btn_next_lightblue_hover.gif');" onmouseout="switchImage(this, 'btn_next_lightblue.gif');"></a></div>
</td></tr></table><div class="Element5">
30.6 Usage extensions to VPI routines</div>
</div>
</div>
<!-- End Page Header -->
<!-- Begin Client Area -->
<div class="Element720" id="areascroll">
<div class="Element721">
<!-- Begin Page Content -->
<div class="Element58">
<a name="描述"></a><div class="Element11">
<div class="Element10">
<p class="Element10">
Several VPI routines, that have existed before SystemVerilog, have been extended in usage with the addition of new object types and/or properties. While the extensions are fairly obvious, they are emphasized here again to turn the reader’s attention to the extended usage. </p><p class="Element10" style="text-align: center">
<strong>Table 30-1: Usage extensions to Verilog 2001 VPI routines</strong></p><div class="Element63">
<div class="TableDiv">
<table cellspacing="0" class="Table1">
<tr>
<td class="Element65" valign="top" width="34%">
<div class="Element66">
To </div></td><td class="Element65" valign="top" width="8%">
<div class="Element66">
Use </div></td><td class="Element65" valign="top" width="58%">
<div class="Element66">
New Usage </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Get tool’s reader version </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_get_vlog_info() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Reader version information </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Create an iterator for the loaded objects (using vpi_iterate(vpiData-Loaded, <instance>)). Create an iterator for (object or traverse) collections using vpi_iterate(vpiMember, <collection>). </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_iterate() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Add iteration types vpiData- Loaded and vpiMember. Extended with collection handle to create a collection member element iterator. </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Obtain a traverse (collection) handle from an object (collection) handle </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_handle() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Add new types vpiTrvsObj and vpiTrvsCollection. Extended with collection handle (of traversable objects) to create a traverse collection from an object collection. </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Obtain a property. </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_get() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Extended with the new check properties:<br>vpiIsLoaded , vpiHasDataVC, vpiHasVC, vpiHasNoValue, and vpiBelong. </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Get a value. </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_get_value() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Use traverse handle as argument to get value where handle points. </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Get time traverse (collection) handle points at. </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_get_time() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Use traverse (collection) handle as argument to get current time where handle points. Also, get the traverse handle min, max, previous VC time, or next VC time. </div></td></tr><tr>
<td class="Element67" valign="top" width="34%">
<div class="Element68">
Free traverse handle<br>Free (traverse) collection handle. </div></td><td class="Element67" valign="top" width="8%">
<div class="Element68">
vpi_free_object() </div></td><td class="Element67" valign="top" width="58%">
<div class="Element68">
Use traverse handle as argument<br>Use (traverse) collection handle as argument. </div></td></tr></table></div></div>
</div>
</div>
<a name="Group"></a><div class="Element14">
<a onclick="toggleVisibilityStored('Group');" class="a_Element14"><img src="sectionminus.png" border="0" alt="" title="" id="imgGroup">Group</a></div>
<div id="divGroup">
<div class="Element11">
<div class="Element10">
<p class="Element10">
<a href="00862.html" target="topic">第三十章 SystemVerilog数据读API</a></p></div>
</div>
</div>
<a name="Links"></a><div class="Element14">
<a onclick="toggleVisibilityStored('链接');" class="a_Element14"><img src="sectionminus.png" border="0" alt="" title="" id="img链接">链接</a></div>
<div id="div链接">
<div class="Element11">
<div class="Element10">
<a href="00862.html" target="topic">第三十章 SystemVerilog数据读API</a></div>
</div>
</div>
</div>
<!-- End Page Content -->
<!-- Begin Page Footer -->
<hr width="98%" align="center" size="1" color="#CCCCCC" />
<table align="center" cellpadding="0" cellspacing="0" border="0">
<tbody>
<tr height="10">
<td></td>
</tr>
<tr align="center">
<td>
<script type="text/javascript"><!--
google_ad_client = "pub-5266859600380184";
google_ad_width = 468;
google_ad_height = 60;
google_ad_format = "468x60_as";
google_ad_type = "text_image";
google_ad_channel ="";
google_page_url = document.location;
//--></script>
<script type="text/javascript"
src="http://pagead2.googlesyndication.com/pagead/show_ads.js">
</script>
</td>
</tr>
<tr height="15">
<td></td>
</tr>
<tr align="center">
<td>
<font size=2>除非特别声明，原文版权归作者所有，如有转摘请注明原作者以及译者（<a href="http://www.fpgatech.net/" target="_blank">FPGA技术网</a>）信息。<br />
如果您对本主题有何建议或意见，请登陆<a href="http://www.fpgatech.net/forum/forumdisplay.php?fid=18" target="_blank">FPGA开发者家园</a>提交，您的参与是我们前进的动力。</font>
<script language="javascript" type="text/javascript" src="http://js.users.51.la/195685.js"></script>
<noscript><a href="http://www.51.la/?195685" target="_blank"><img alt="我要啦免费统计" src="http://img.users.51.la/195685.asp" style="border:none" /></a></noscript>
</td>
</tr>
</tbody>
</table>
<!-- End Page Footer -->
</div>
</div>
<!-- End Client Area -->
</body></html>⌨️ 快捷键说明
复制代码
Ctrl + C
搜索代码
Ctrl + F
全屏模式
F11
切换主题
Ctrl + Shift + D
显示快捷键
?
增大字号
Ctrl + =
减小字号
Ctrl + -