<?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>xdata problem with ds5250?</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/22529/xdata-problem-with-ds5250</link><description> 
now I am using ds5250 to do RSA algorithm. 
I have 512k externel SRAM. 
and the 
off-chip code memory start:0x00000 size:0x40000 
off-chip xdata memory start:0x0400 size:0x1000 start:0x40000
size:0x40000 

 
the first xdata memory configuration is to</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: xdata problem with ds5250?</title><link>https://community.arm.com/thread/113224?ContentTypeID=1</link><pubDate>Sat, 22 Sep 2007 10:38:38 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:e5efeab8-93f8-4722-992e-48c9d796dd3f</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
&lt;a href="http://www.keil.com/support/docs/1924.htm"&gt;http://www.keil.com/support/docs/1924.htm&lt;/a&gt;&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: xdata problem with ds5250?</title><link>https://community.arm.com/thread/99685?ContentTypeID=1</link><pubDate>Sat, 22 Sep 2007 08:54:14 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:b68280ab-d4f9-4494-8614-c65d04e66ecc</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
&lt;i&gt;&amp;quot;i am using Dallas 5250. it can extend external SRAM to
4M.&amp;quot;&lt;/i&gt;&lt;/p&gt;

&lt;p&gt;
The chip can do it, but how are you configuring he
&lt;i&gt;&lt;b&gt;tools&lt;/b&gt;&lt;/i&gt; to use it?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: xdata problem with ds5250?</title><link>https://community.arm.com/thread/75529?ContentTypeID=1</link><pubDate>Sat, 22 Sep 2007 07:03:35 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:d190e26b-3a83-4b26-897a-d3d6f363c350</guid><dc:creator>cui ruoqi</dc:creator><description>&lt;p&gt;&lt;p&gt;
i am using Dallas 5250.&lt;br /&gt;
it can extend external SRAM to 4M.&lt;br /&gt;
In my configuration,I use 256k for program memory and&lt;br /&gt;
256k for data memory,and the 0x0400-0x1400 xdata memory&lt;br /&gt;
is just for MAA.&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item><item><title>RE: xdata problem with ds5250?</title><link>https://community.arm.com/thread/48642?ContentTypeID=1</link><pubDate>Sat, 22 Sep 2007 06:07:48 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:8eca9078-feb1-471d-9226-5875e3616473</guid><dc:creator>Andy Neil</dc:creator><description>&lt;p&gt;&lt;p&gt;
&amp;quot;standard&amp;quot; XDATA can never exceed 64K - so how are you configuring
yours for 512K?&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>