On Fri, 4 Jan 2002, Bill Pechter wrote:
> The problem is VMS uses 4 separate CPU modes, besides the Unix kernel
> and user modes which makes it difficult if not impossible to get it
> right on x86.
32-bit x86 processors have 4 privelege levels for segment-level and I/O
protection, but only 2 privelege levels for page-level protection.
--
Jeffrey S. Sharp
jss_at_subatomix.com
Received on Fri Jan 04 2002 - 23:50:52 GMT