[snip]
>> Exactly. Except iopl(3), in addition to raising the bitmap to take 8k,
>> sets it to allow access to any ioport, thus ioperm is not necessary
>> when iopl is called. Or so that is the current behavior. I know not
>> if it is correct behavior.
Andrew> Makes sense to me.
iopl(3) does not increase the bitmap size. As it's name suggests it
sets the Input Output Privelege Level to 3 which disables i/o port
privelege checking.
Eric