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List:       linux-newbie
Subject:    Re: query related to different architectures
From:       "Mike Frysinger" <vapier.adi () gmail ! com>
Date:       2007-03-20 14:15:43
Message-ID: 8bd0f97a0703200715k3179750dy744a237bba9773b7 () mail ! gmail ! com
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On 3/20/07, Rick Brown <rick.brown.3@gmail.com> wrote:
> 1) i386 - I understand this is the most commonly used intel IA32
> architecture to which all the pentiums, xeons, and 386, 486 etc
> belong. It also covers the AMD (and other manufacturers') x86 based
> processors. Is this right?

yes

> 2) ia64 - This is for the intel 64 bit processors (Itanium).
> Additionaly, it also covers AMD and other manufacturers' 64 bit
> processors. Correct?

no ... this is the itanium only, this is not the AMD64/EM64T stuff

> 3) x86_64 - What is this?

amd64/em64t

> Secondly, when we talk of 32/64 bit processor, we are talking about
> the data bus width, right? The same holds when we talk about Operating
> systems, right? So the size of address bus does not matter?

it usually refers to the native size of the cpu ... 64bit processors
work normally on registers that are 64bits in size while 32bit
processors work normally on registers that are 32bits in size
-mike
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