🚀 go-pugleaf

I don't see a major problem in sharing interrupt numbers between
IRQ chips and exceptions. You layer an exception handler on top
of an IRQ handler. The exception handler checks if the PIC is
requesting an interrupt. If it is, just call the IRQ handler.
Otherwise handle the exception.  Of course the billion dollar
question is how to handle an exception that happens simultaneously
with an IRQ.  I don't have a billion bucks, thus I don't know.
I suggest that everyone just moves the IRQs somewhere else. You
can program the PIC with three bytes if you want to. Anybody
want to get the data? I would need to dig it out of the manuals
again, but it would be no problem.

Aki
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