Date: Fri, 19 Jul 1996 16:08:46 +0200 (MET DST) From: Mark Habersack To: snarfy AT goodnet DOT com cc: djgpp AT delorie DOT com Subject: Re: preemptive multitasking for dj In-Reply-To: <4smaui$1jm@news.goodnet.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII On 18 Jul 1996 snarfy AT goodnet DOT com wrote: > 400hz task switching would be fine with me except that I want to hook > IRQ8 so that my tasks will be compatible with most other libraries (most > people use IRQ0 as a timer in their libs.). The problem is that IRQ8 > interrupts at 1024hz and is not adjustable. I also have to use Haven't seen your code but I have a suggestion on the interrupt used. It's true that many people use IRQ0 for various purposes but I have never seen any package that uses the interrupts the RTC is able to generate (also at 1024Hz+ I suppose). Don't quote me on that but I think there is such a interrupt. It would resolve many compatibility problems as you wouldn't have to take care of other soft using the int (there's good chance that the RTC-generated interrupt won't be used). I remember reading some technical AT reference on that - maybe this would cure some problems? Mark /*******************************/ /** So here I am once more... **************************************/ /** When you grown up and leave your playground, where you kissed **/ /** your Prince and found your Frog - remember the Jester that **/ /** showed you tears, a Script for Tears... ************************/ /*********************************************/