X-Authentication-Warning: delorie.com: mail set sender to djgpp-bounces using -f From: Jason Mills Newsgroups: comp.os.msdos.djgpp Subject: Interrupt Handler Hanging? Date: Wed, 20 Oct 2004 20:39:45 -0230 Organization: Memorial University of Newfoundland Lines: 11 Message-ID: NNTP-Posting-Host: jmills.ccore.mun.ca Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit X-Trace: coranto.ucs.mun.ca 1098313786 29387 134.153.38.195 (20 Oct 2004 23:09:46 GMT) X-Complaints-To: usenet AT coranto DOT ucs DOT mun DOT ca NNTP-Posting-Date: Wed, 20 Oct 2004 23:09:46 +0000 (UTC) User-Agent: Mozilla Thunderbird 0.7.3 (Windows/20040803) X-Accept-Language: en-us, en To: djgpp AT delorie DOT com DJ-Gateway: from newsgroup comp.os.msdos.djgpp Reply-To: djgpp AT delorie DOT com I'm new to DJGPP and interrupt handling in general. It seems my interrupt handler is hanging (not returning). Is this possible? I'm using a modified version of the interrupt handler example from the user guide (Guide: Interrupts Overview). When I run the code as is, using IRQ 0 (Timer) the counter increments as it should. But when I change the IRQ, to 5 or 7, and manually trigger multiple interrupts, the counter increments exactly once. What am i missing? Thanks, Jason