[vox] x86-64: AMD, intel and compatibility

[Hans W. Uhlig]

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On Wednesday 17 September 2003 11:24 pm, p@dirac.org wrote:
> hi all,
>
> tom's hardware hints that the new 3200+ is the last 32bit athlon (and
> it got _trounced_ in the reviews.).  since i won't be ready to build a
> new computer anytime soon, my next computer is probably going to be an
> AMD x86-64 machine.  that's kind of a scary thought.
>

Intel is going to be offering a 32 bit arcitecture for the forseeable futur=
e,=20
An article mentioned that they are making the push for 32 bit in business=20
only to begin with, AMD is going full force. AMD's 64 bit arcitecture is a =
32=20
bit interface with a 64 bit mode much like the old IA32 was a 16 bit=20
interface with a 32 bit mode... for proper memory access. Eventually=20
the 16 bit mode will be dropped off and 64 will be left for when 128 comes =
out


> so i've been wondering about these questions...
>
> if the itanium-1 isn't x86-32 compatible, and the itanium-2 is very slow
> at x86-32 compatibility, how does intel propose to stay in business?
> are they really banking that we'll all throw away our 32 bit software?
>
no they are providing support for a 64 bit OS and a 32 bit emulator
think OSX/OS9


> are the AMD x86-64 systems really supposed to achieve 100% 32bit
> software compatible?
>
theoretically

> and what about hardware?  can i just stuff all my PCI and ISA cards into
> a motherboard designed for an AMD x86-64?  IDE stuff?  SCSI cards?  the
> works?

PCI yes, ISA - very few modern boards take these now. IDE(most first and=20
second edition board will probobly support EIDE PC133 and SATA. Server boar=
ds
will support SCSI Raid or your scsi card.

>
> pete

< Hans

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Hans W. Uhlig         "Life is a long and lonely road,
deathguard@yahoo.com      Bring a Friend."
Technical Associate
Staples Inc.

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