Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as 32bit / 64 bit. I've read that it
means the native word size of a machine. But what exactly is that?
Register size? Address bus size? Anything else?
I've always used the virtual address space as
...@gmail.com]
Sent: Friday, October 23, 2009 10:51 AM
To: Rajat Jain
Cc: simonya...@gmail.com; Siddu; Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE (Physical Address Extension) expands the _physical_ address space
to 32 bits
...@virginbroadband.com.au; C; simonya...@gmail.com; Siddu; Rick Brown;
kernelnewbies; linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
Hi,
1) a) Processor 32/64 bit defines by ::: Data bus Size
b) In Pentium 36 bit Adddress, Basically a PAE, Which is Introduced First
by Intel
To: Rajat Jain
Cc: simonya...@gmail.com mailto:simonya...@gmail.com; Siddu;
Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org mailto:linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE (Physical Address Extension) expands
Rick Brown wrote:
Hi,
Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as 32bit / 64 bit. I've read that it
means the native word size of a machine. But what exactly is that?
Register size? Address bus size? Anything else?
depends on the data bus
mailto:linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE (Physical Address Extension) expands the _physical_ address
space
to 32 bits, but the _virtual_ address space stays the same at
32-bits, and the virtual address size is what I
: Friday, October 23, 2009 10:51 AM
To: Rajat Jain
Cc: simonya...@gmail.com mailto:simonya...@gmail.com; Siddu;
Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org
mailto:linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE
Jain
Cc: simonya...@gmail.com mailto:simonya...@gmail.com; Siddu;
Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org
mailto:linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE (Physical Address Extension) expands
mailto:simonya...@gmail.com; Siddu;
Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org
mailto:linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE (Physical Address Extension) expands the _physical_
address
space
to 32 bits
]
Sent: Friday, October 23, 2009 10:51 AM
To: Rajat Jain
Cc: simonya...@gmail.com; Siddu; Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
PAE (Physical Address Extension) expands the _physical_ address space
to 32 bits
rajat.j...@infogain.com
wrote:
Hi,
Original Message
From: C [mailto:a.la.kaa...@gmail.com]
Sent: Friday, October 23, 2009 10:51 AM
To: Rajat Jain
Cc: simonya...@gmail.com; Siddu; Rick Brown; kernelnewbies;
linux-new...@vger.kernel.org
Subject: Re: 32 bit processors / 64 bit processors
On Wed, 21 Oct 2009 13:13:03 +0530, askb ask...@gmail.com wrote:
On Wed, 2009-10-21 at 11:09 +0530, Siddu wrote:
On Wed, Oct 21, 2009 at 8:32 AM, Rick Brown rick.brow...@gmail.com
wrote:
Hi,
Firstly, I'm trying to understand what exactly characterizes a
Hi,
1. The size of the processor's internal address bus (virtual address
space) is what qualifies it as a 32-bit / 64-bit processor.
Well, in that sense, isn't Pentium a 36-bit processor (since it gives
the option of PAE to use 64 GB of memory - it must be having atleast 36
address lines)?
PAE (Physical Address Extension) expands the _physical_ address space
to 32 bits, but the _virtual_ address space stays the same at
32-bits, and the virtual address size is what I mentioned as qualifies
the processor as 32-bit or 64-bit.
1. Addressable physical memory / physical address size
On Oct 21, 2009, at 1:39 PM, Siddu wrote:
On Wed, Oct 21, 2009 at 8:32 AM, Rick Brown rick.brow...@gmail.com
wrote:
Hi,
Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as 32bit / 64 bit. I've read that it
means the native word size of a
Just did a comparison test but it tells me otherwise. But I'm not sure if
the test case if correct, can someone improve it?
On a 64bit CentOS:
[r...@yyan ~]# more test.c
#include stdio.h
int main ()
{
printf (%d\n, sizeof(int));
return 0;
}
[r...@yyan ~]# gcc test.c
[r...@yyan
On Oct 21, 2009, at 2:31 PM, Denis Kirjanov wrote:
Just did a comparison test but it tells me otherwise. But I'm not
sure if the test case if correct, can someone improve it?
On a 64bit CentOS:
[r...@yyan ~]# more test.c
#include stdio.h
int main ()
{
printf (%d\n, sizeof(int));
On Wed, Oct 21, 2009 at 12:02 AM, 益牙 simonya...@gmail.com wrote:
On Oct 21, 2009, at 1:39 PM, Siddu wrote:
On Wed, Oct 21, 2009 at 8:32 AM, Rick Brown rick.brow...@gmail.com
wrote:
Hi,
Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as
1. The size of the processor's internal address bus (virtual address
space) is what qualifies it as a 32-bit / 64-bit processor.
Whether or not the OS changes the processor mode to 64-bit(IA-32e/Long
etc) (and thereby has access to the 64-bit virtual address space,
extended register set etc) is
On Wed, 2009-10-21 at 11:09 +0530, Siddu wrote:
On Wed, Oct 21, 2009 at 8:32 AM, Rick Brown rick.brow...@gmail.com
wrote:
Hi,
Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as 32bit / 64 bit. I've read
Hi,
Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as 32bit / 64 bit. I've read that it
means the native word size of a machine. But what exactly is that?
Register size? Address bus size? Anything else?
Secondly, I'm trying to understand what
On Wed, Oct 21, 2009 at 8:32 AM, Rick Brown rick.brow...@gmail.com wrote:
Hi,
Firstly, I'm trying to understand what exactly characterizes a
procesor or an operating system as 32bit / 64 bit. I've read that it
means the native word size of a machine. But what exactly is that?
Register size?
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