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Re: RELEASE BLOCKER: Linux doesn't follow x86/x86-64 ABI wrt direction flag



Another story, the sad story of the intel chip (I think it was
the 80188) where Intel made use of Int 5, which was documented
as reserved. Unfortunately, Microsoft/IBM had used this for
print screen or some such. Intel was absolutely right that
their documentation was clear and it was wrong to have used
these interrupts .. but the result was a warehouse of unused
chips.

Not really. Just, no one used the BOUND instruction. All computers running DOS (Intel, AMD, even the old NEC V20/V30 chips) still connect INT 5 to Print Screen.


Paolo


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