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Extended 64-Bit architecture INFO
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Wed Jan 19, 2005 7:02 pm Reply and quote this post
I went reading crazy on the AMD & Intel Websites and came up with this. And this should Fuel the 64-Bit Industry even further.

AMD (Legacy & Compatibility Modes)
(AMD's register sheet)

- General Purpose Registers
8 @ 32-Bit
16 @ 64-Bit (64-Bit Mode)

- 128-Bit XMM Registers
8 @ 128-Bit
16 @ 128-Bit (64-Bit Mode)

- 64-Bit MMX Registers
8 @ 64-Bit
8 @ 64-Bit (64-Bit Mode)

- X87 Registers
8 @ 80-Bit
8 @ 80-Bit (64-Bit Mode)

- Instruction Pointer
1 @ 32-Bit
1 @ 64-Bit (64-Bit Mode)

- Flags
1 @ 32-Bit
1 @ 64-Bit (64-Bit Mode)

- Stack
16-Bit or 32-Bit
64-Bit (64-Bit Mode)
-------------------------------------------------------------------------------
Intel (Legacy & Compatibility Modes)
(Intel's register sheet)

- General Purpose Registers
8 @ 32-Bit
16 @ 64-Bit (64-Bit Mode)

- Instruction Pointer
1 @ 32-Bit
1 @ 64-Bit (64-Bit Mode)

- Flags
1 @ 32-Bit
1 @ 64-Bit (64-Bit Mode)

- FP Registers
8 @ 80-Bit
8 @ 80-Bit (64-Bit Mode)

- Multi-Media Registers
8 @ 64-Bit
8 @ 64-Bit (64-Bit Mode)

- Streaming SIMD Registers
8 @ 128-Bit
16 @ 128-Bit (64-Bit Mode)

- Stack Width
16-Bit or 32-Bit
64-Bit (64-Bit Mode)

Can you see the difference?
There is \"NO\" difference in the Extended 64-Bit architecture for both AMD & Intel. And the Itanium 2 architecture has nothing to do with Intel's EMT64.

Contributed by Super XP, iVirtua Ultimate Contributor
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Thu May 12, 2005 9:00 pm Reply and quote this post
I have re-opened this topic for further discussion.
Contributed by Predator, Guest
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Wed Oct 19, 2005 5:49 pm Reply and quote this post
Quote:
There is \"NO\" difference in the Extended 64-Bit architecture for both AMD & Intel.


Yeah... it's just that the Athlon64 architecture implements it better. Prescott was a crying shame... much as I hate to admit it. Intel screwed up on that one.

Contributed by A_Pickle, iVirtua Ultimate Contributor
1373 iVirtua Loyalty Points • View ProfileSend Private MessageBack to Top

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