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Subject: Re: Opinions

Author: Gian-Carlo Pascutto

Date: 09:20:43 09/07/03

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On September 07, 2003 at 11:47:33, Robert Hyatt wrote:

>>The normal version will not run 64 bit programs.
>
>How can it _Prevent_ 64 bit instructions?
>
>It can't...
>
>>>When might a 64 bit version of WS 2003 be available for the Opteron system?
>>
>>Only Microsoft know this...
>>
>>>Until the Opteron has a 64 bit version of WS 2003 out ,wouldn't another OS
>>>from Windows work on the Operton system?
>>
>>Yes, but it will not run 64 bit programs.
>
>Again, this is wrong.  The O/S can't prevent my program from executing 64
>bit instructions if I want to, as they are not privileged instructions.  The
>O/S might prevent me from addressing beyond 4 gigabytes...  but that's about
>all it can prevent.

Uh, how is your program going to work when you lose half your register
file on each context switch?

--
GCP



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