Re: query related to different architectures

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On 3/20/07, Rick Brown <rick.brown.3@xxxxxxxxx> 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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