On Monday 08 August 2005 09:33, [EMAIL PROTECTED] wrote:
> > With the exception of the Itainium, current 64 bit
> > processors are 32
> > bit processors with 64 bit extensions for large
> > memory support. So,
> > there should be no issue running 32 bit clients on
> > x86-64 processors.
> >
> > Dan
>
> Not to start a flame war but that is only for intel
> processors. AMD64 is truely a 64 bit processor from
> the ground up.

Actually, no.  The Itanium was a 64 bit processor from the ground up, hence 
the reason for no backward compatibility.  AMD took the x86 instruction set, 
extended it, and came up with the x86-64 instruction set, which had 32bit 
backward compatibility.  Intel finally capitulated, and produced a 64 bit 
chip that had (almost) the exact same 64 bit extensions as the AMD chip.

j----- k-----

-- 
Joshua Kugler
CDE System Administrator
http://distance.uaf.edu/


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