Florian Schmidt wrote: > On Tue, 28 Sep 2004 09:57:15 -0700 > Mark Knecht <mknecht@xxxxxxxxxxxxxx> wrote: > > >>One last little sickening detail I forgot to add before. Sorry for >>doing it now. >> >>In the older 'compatibility model' we knew the 'prioity of the >>interrupt from the interrupt number: >>0,1,8,9,10,11,12,13,14,15,3,4,5,6,7. It was hardwired. > > > Hi, > > i welcome your chiming in because now you got me confused :) > > http://roht.informatik.uni-halle.de/~ladischc/pic_priorities.html > > That page says one can change the irq prios directly in the PIC. So, are > they hardwired now, or not? > > Flo > > Florian, It may be possible to change the priorities in the the old PIC model. I do not know of anyone that actually does it nor do I know what the real world implications of doing it might be. It is my understand that in a 'IBM Compatible PC' that the interrupt priorities are never changed. I suppose it's possible that the capability exists to do so but that no one really uses it. I do know that the ability to change the priorities is considered one advantage of the newer APIC model. Of course, I could be quite wrong!! Take it all with a grain of salt! Cheers, Mark
