Re: linear vs. logical addresses? how does cpu interpret kernel addrs?

[William Lee Irwin III]

On Tue, Sep 16, 2003 at 06:44:21PM -0700, Ben Johnson wrote:
> Thank you.  I've been reading the first addition.  is there a second?
> the second chapter has a very good explanation of paging and how linear
> addresses are used.  logical addresses on the other hand are barely
> mentioned.  Segmentation is described well, but the translation of
> logical into linear addresses is not described.
> I've read elsewhere that logical addresses are comprised of a 16-bit
> segment selector and a 32-bit offset.  I thought pointers were always
> exactly 32-bits (on 32-bit intel).  where is the 16-bit selector?

You might want to look at intel's volume 3. They're kept in dedicated
registers separate from the pointers and used implicitly.


-- wli
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