Re: spurious 8259A interrupt
From: Jamie Lokier
Date: Wed Mar 24 2004 - 10:30:24 EST
Richard B. Johnson wrote:
> It isn't CPU-specific. It's motherboard glitch specific. If there
> is ground-bounce on the motherboard or excessive induced
> coupling, the CPU may occasionally get hit with a logic-level
> that it "thinks" is an interrupt, even though no controller
> actually generated it.
That doesn't seem plausible on an otherwise reliable computer.
Why would interrupt lines suffer ground-bounce logic glitches yet all
the data, address and control lines be fine?
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