inst_s52.htm

来自「ST20 Embedded Toolset R2.0.5用于开发基于ST20芯片」· HTM 代码 · 共 79 行

HTM
79 行
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<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<meta name="GENERATOR" content="Quadralay WebWorks Publisher Professional Edition 6.0.5">
<meta name="TEMPLATEBASE" content="book_html">
<meta name="LASTUPDATED" content="08/22/03 10:13:51">
<title>devsw</title>

<STYLE TYPE="text/css">
<!--
	span.Signal { text-transform: uppercase; font-family: Verdana }
-->
</STYLE>

</head>

<body link="#3366CC" vlink="#9999CC" text="#000000" alink="#0000CC" bgcolor="#FFFFFF"
background="images/backgrnd.gif">

<p><img src="images/stlogo.gif" width="106" height="83" align="left"
alt="logo here!"> </p>

<table width="331" border="0" align="right" cellpadding="0" cellspacing="0">
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<p><br clear="all">
</p>

<hr align="left">

<blockquote>
<h2>
  <a name="1219933"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">devsw</font>
</h2><hr>


<p>
  <a name="1219934"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">device store word</font>
</p>


<h3>
  <a name="1219935"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Code</font>
</h3>


<p>
  <a name="1219936"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">2F F5</font>
</p>


<h3>
  <a name="1219937"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Description</font>
</h3>


<p>
  <a name="1219938"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">Perform a device write from memory, a memory-mapped device or a peripheral. Store <span class=Signal>Breg</span> into the word of memory addressed by <span class=Signal>Areg</span>. The memory access performed by this instruction is guaranteed to be correctly sequenced with respect to other device-access instructions. Also the instruction is guaranteed to be executed after all normal memory store instructions that appear before it in the code sequence, and before all normal memory stores that appear after it.</font>
</p>


<h3>
  <a name="1219939"> </a><font color="#003366"  face="Verdana, Arial, Helvetica, sans-serif">Definition</font>
</h3>


<p>
  <a name="1219940"> </a><font size=2  face="Verdana, Arial, Helvetica, sans-serif">if ( <em>PeripheralStart</em> <font face=symbol>

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