107 lines
7.0 KiB
HTML
107 lines
7.0 KiB
HTML
<?xml version="1.0" encoding="utf-8"?>
|
||
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
|
||
<html xmlns:MadCap="http://www.madcapsoftware.com/Schemas/MadCap.xsd" MadCap:lastBlockDepth="6" MadCap:lastHeight="94" MadCap:lastWidth="853" MadCap:disableMasterStylesheet="true" MadCap:tocPath="" MadCap:InPreviewMode="false" MadCap:PreloadImages="false" MadCap:RuntimeFileType="Topic" MadCap:TargetType="WebHelp" lang="en-us" xml:lang="en-us" MadCap:PathToHelpSystem="../../../" MadCap:HelpSystemFileName="Default.xml" MadCap:SearchType="Stem">
|
||
<head><title>BRANCH</title>
|
||
<link href="../../SkinSupport/MadCap.css" rel="stylesheet" />
|
||
<link href="../../Resources/Stylesheets/BSE_Help.css" rel="stylesheet" />
|
||
<script src="../../SkinSupport/MadCapAll.js" type="text/javascript">
|
||
</script>
|
||
</head>
|
||
<body>
|
||
<h1 class="code">BRANCH</h1>
|
||
<div class="ImagePlusCaption">
|
||
<div class="Col2">
|
||
<p>
|
||
<img src="../../graphics/pgm_icon1.gif" border="0" alt="BS1 icon" title="BS1 icon" />
|
||
<img src="../../graphics/pgm_icon2.gif" border="0" alt="BS2 icon" title="BS2 icon" />
|
||
<img src="../../graphics/pgm_icon2e.gif" border="0" alt="BS2e icon" title="BS2e icon" />
|
||
<img src="../../graphics/pgm_icon2sx.gif" border="0" alt="BS2sx icon" title="BS2sx icon" />
|
||
<img src="../../graphics/pgm_icon2p.gif" border="0" alt="BS2p icon" title="BS2p icon" />
|
||
<img src="../../graphics/pgm_icon2pe.gif" border="0" alt="BS2pe icon" title="BS2pe icon" />
|
||
<img src="../../graphics/pgm_icon2px.gif" border="0" alt="BS2px icon" title="BS2px icon" />
|
||
</p>
|
||
</div>
|
||
<p style="text-align: right;"><a href="../ExampleTopics/BranchEx.htm" target="" title="" alt="" class="MCXref_0">BRANCH Examples</a>
|
||
</p>
|
||
<p> </p>
|
||
</div>
|
||
<p class="clear"> </p>
|
||
<p> </p>
|
||
<p class="PlainText">Syntax <img align="absmiddle" src="../../graphics/mini_1.gif" />:
|
||
<span class="keyword_in_text">BRANCH</span> <![CDATA[ ]]><i>Offset<u style="font-style: normal; text-decoration: none;">, (</u>Address1</i>,<i> Address2</i>, ..<i>.AddressN</i>)</p>
|
||
<p class="PlainText">Syntax <img align="absmiddle" src="../../graphics/mini_2.gif" />: <span class="keyword_in_text">BRANCH</span> <![CDATA[ ]]><i>Offset,</i> [<i>Address1</i>,<i> Address2</i>, ...<i>AddressN</i>]</p>
|
||
<h2>Function</h2>
|
||
<p class="PlainText">Go to the <i>Address</i> specified by <i>Offset</i> (if in range).</p>
|
||
<ul>
|
||
<li value="1"><b><i>Offset</i></b> is a variable/constant/expression* (0 - 255) that
|
||
specifies the index of the address, in the list, to branch to (0 - N).</li>
|
||
<li value="2"><b><i>Addresses</i></b> are labels that specify where to go. <span class="keyword_in_text">BRANCH </span>will ignore any list entries beyond offset 255.</li>
|
||
</ul>
|
||
<p class="PlainText">*<img src="../../graphics/bs1note.gif" style="vertical-align: super;" /> Note: expressions are not allowed as arguments on the BS1.</p>
|
||
<h2>Quick Facts</h2>
|
||
<table width="100%" cellpadding="4" cellspacing="0" border="1">
|
||
<tr>
|
||
<td align="center" width="150" bgcolor="#CFCFCF"> </td>
|
||
<td align="center" width="40%" bgcolor="#CFCFCF">BS1</td>
|
||
<td align="center" width="40%" bgcolor="#CFCFCF">BS2 Family</td>
|
||
</tr>
|
||
<tr>
|
||
<td align="center" bgcolor="#CFCFCF">Limit of <i>Address</i> entries</td>
|
||
<td align="center">Limited only by memory</td>
|
||
<td align="center">256</td>
|
||
</tr>
|
||
<tr>
|
||
<td align="center" bgcolor="#CFCFCF">Related Commands</td>
|
||
<td align="center">None</td>
|
||
<td align="center">
|
||
<p align="center"><a href="ON_GOTO.htm" target="" title="" alt="" class="MCXref_0">ON...GOTO</a>
|
||
</p>
|
||
</td>
|
||
</tr>
|
||
</table>
|
||
<p> </p>
|
||
<h2>Explanation</h2>
|
||
<p class="PlainText">The <span class="keyword_in_text">BRANCH </span>instruction is useful when you want to write something like this:</p><pre class="BScode" xml:space="preserve">Test_Value:
|
||
IF value = 0 THEN Case_0 ' if value is 0, jump to Case_0
|
||
IF value = 1 THEN Case_1 ' if value is 1, jump to Case_1
|
||
IF value = 2 THEN Case_2 ' if value is 2, jump to Case_2
|
||
</pre>
|
||
<p class="PlainText">You can use <span class="keyword_in_text">BRANCH</span> to organize this into a single statement:</p>
|
||
<p class="PlainText">
|
||
<img src="../../graphics/bs1_inline.gif" />
|
||
</p><pre class="BScode" xml:space="preserve">  BRANCH value, (Case_0, Case_1, Case_2)</pre>
|
||
<p class="PlainText">
|
||
<img src="../../graphics/bs2all_inline.gif" />
|
||
</p><pre class="BScode" xml:space="preserve">  BRANCH value, (Case_0, Case_1, Case_2)</pre>
|
||
<p class="PlainText">This works exactly the same as the previous <a href="IF_THEN.htm" target="" title="" alt="" class="MCXref_0">IF…THEN</a> example. If the value isn’t in range (in this case if value is greater than 2), <span class="keyword_in_text">BRANCH </span>does nothing and the program continues with the next instruction after <span class="keyword_in_text">BRANCH</span>.</p>
|
||
<div class="Col2">
|
||
<div class="MasterFoot">
|
||
<p MadCap:conditions="BSEconditions.BSEWebHelp (Primary)-INCLUDE"><a href="../../HomeTopics/HomePage.htm">Go to Welcome page</a>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<div class="Col2">
|
||
<div class="MasterFoot">
|
||
<p style="text-align: right;"><span class="ContactInfoProjectName">BASIC Stamp Help</span> <![CDATA[ ]]><span class="ContactInfoVersion#">Version 2.5.4</span> <![CDATA[ ]]></p>
|
||
<p style="text-align: right;">Copyright © <span class="ContactInfoCompanyName">Parallax Inc.</span></p>
|
||
<p style="text-align: right;"><span class="SystemShortDate">8/8/2012</span>
|
||
</p>
|
||
</div>
|
||
</div>
|
||
<script type="text/javascript">/* <![CDATA[ */
|
||
|
||
var _gaq = _gaq || [];
|
||
_gaq.push(['_setAccount', 'UA-285614-1']);
|
||
_gaq.push(['_trackPageview']);
|
||
|
||
(function() {
|
||
var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
|
||
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
|
||
var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
|
||
})();
|
||
|
||
/* ]]> */</script>
|
||
<script type="text/javascript" src="../../SkinSupport/MadCapBodyEnd.js">
|
||
</script>
|
||
</body>
|
||
</html> |