On Wed, 13 Mar 2002, Martin Wilck wrote:
>> inb(0x20) call is not captured in our protocol, it must occur long after
>> the error. (We saw normal execution of the above code fragment where
>> there is ~1us between the outb and inb, where it is >120us here).
There is/was at least one simulator that shoots the kernel (and
everything else) dead in response to frobbing the PIC while the local
APIC timer etc. are going, and I wouldn't be surprised if there were
some real hardware that did so as well.
(this is the code under if (timer_ack) in do_timer_interrupt())
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