<?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>SWI handling - ARM7 vs. ARM9</title><link>https://community.arm.com/developer/tools-software/tools/f/keil-forum/22176/swi-handling---arm7-vs-arm9</link><description> 
Hello, 
I have read the datasheets but I am having some trouble with the
implementation. I am trying to invoke a software interrupt with an
STR9, but my handler is never invoked. I see why: the SWI.s file is
compiled, but the debugger does not offer</description><dc:language>en-US</dc:language><generator>Telligent Community 10</generator><item><title>RE: SWI handling - ARM7 vs. ARM9</title><link>https://community.arm.com/thread/49649?ContentTypeID=1</link><pubDate>Fri, 04 Apr 2008 14:53:34 GMT</pubDate><guid isPermaLink="false">dd9e70c8-6d3c-4c71-b136-2456382a7b5c:7acea891-d2a2-4496-b34f-bd31e6c48c5f</guid><dc:creator>Catcus Blip</dc:creator><description>&lt;p&gt;&lt;p&gt;
For those of you who don&amp;#39;t care :) :), here is the deal:&lt;br /&gt;
The problem was a combination of a flawed startup file and a too
small stack for the supervisor mode. the issue I described earlier
regarding the table is irrelevant - it is just a more convenient way
to deal with SWI handlers. now, that I understand SWI functions, I
can actually write interrupt safe code (both IRQ and FIQ. FIQ can be
disabled once in supervisor mode). I&amp;#39;m telling you, this MCU is not
as simple as the 166...!&lt;/p&gt;
&lt;/p&gt;&lt;div style="clear:both;"&gt;&lt;/div&gt;</description></item></channel></rss>