hi,
then check your interrupt mask code,i suffered from this problem
some time ago too. You can check the list for those threads(more than
one). In short,the reason i was seeing spurious interrupt is:
1. the code i used to decide which interrupt coming in used to have a bug
(the IRR bit may still set for current interrupt even after i masked it,
when a new 8259 interrupt come in,i detect it as the old one)
2. write to 8259 didn't really reach device for some time,some barrier needed
>
>No this is an instrumentation mistake. Yes it never returns...
>Because I reenter the interrupt handler before it completes.
Regards
Zhang Fuxin
fxzhang@ict.ac.cn
