[ECOS] Re: DSR question

[t.michals@attbi.com]

yes this is what is happening, the DSR unmasks the 
interrupt causing the the ISR to retrigger before the 
DSR is completed.  So this can cause a deadlock issue?  
I thought this should just retrigger the DSR again? 
> On Mon, 2002-09-30 at 20:28, t.michals@attbi.com wrote:
> > Basicly the interrupt is level triggered.
> 
> I never use level triggered interrupts in my HW design. They have a bad
> habit of triggering again as soon as you unmask them if the level isn't
> cleared by HW before unmasking. Perhaps check that, it could cause a
> deadlock of stacked DSR-s.
> 
> iz
> 
> 

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