<?xml version="1.0" encoding="UTF-8" ?>
<?xml-stylesheet type="text/xsl" href="https://community.arm.com/utility/feedstylesheets/rss.xsl" media="screen"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:wfw="http://wellformedweb.org/CommentAPI/"><channel><title>Is Stack Point can use external memory</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/15110/is-stack-point-can-use-external-memory</link><description> Dear sir: 
 Can I ask a question,I have a cpu 
like 8051 and stack point can locate external 
memory, can I use the C51 to define the stack point to extern memory or must be internal 
memory. 
 
 Best Regard 
 </description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: Is Stack Point can use external memory</title><link>https://community.arm.com/thread/39091?ContentTypeID=1</link><pubDate>Fri, 30 Aug 2002 04:29:57 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:944acb80-331d-4af9-a274-cec0ee693eaf</guid><dc:creator>Keil  Support Intl.</dc:creator><description>&lt;p&gt;There are today also several 8051 variants that allow to place stack in XDATA or extended memory spaces.  For example Philips 80C51MX or Dallas 390/400.&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: Is Stack Point can use external memory</title><link>https://community.arm.com/thread/39089?ContentTypeID=1</link><pubDate>Thu, 29 Aug 2002 00:41:43 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:9ff1725b-ed0f-4bba-8e90-e7c515b8cc56</guid><dc:creator>Andrew Neil</dc:creator><description>&lt;p&gt;The hardware SP register of the 8051 CPU can &lt;i&gt;&lt;b&gt;only&lt;/b&gt;&lt;/i&gt; address the internal RAM - see the &lt;b&gt;Data Sheet&lt;/b&gt;.&lt;br /&gt;
&lt;br /&gt;
However, you can &lt;b&gt;simulate&lt;/b&gt; an external stack in XDATA by making your functions &lt;b&gt;reentrant&lt;/b&gt; - see the C51 &lt;b&gt;Manual&lt;/b&gt;&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>