[A83] Re: 83p os
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[A83] Re: 83p os
> >When saying "features", I was actually referring to the interrupt part:
> >how would you prevent any program from setting IM 2?
> If you already change the jumps you can also check that no program has an
> IM2 instruction in it. But when you have self modifying code it's very
> difficult to check.
I would say it's impossible to check without actually running the
program, unless you attach some hardware to the bus that can intercept
the instruction during the fetch cycle. I don't think there is an
algorithm that solves this problem.
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