Re: how many win64?
- From: "Don Burn" <burn@xxxxxxxxxxxxxxxx>
- Date: Thu, 14 Apr 2005 12:47:46 -0400
You can download the manuals for the architectures from AMD and Intel.
Athlon 64, Operteron, and Intel Pentium's with EMT64 technology are x64
architecture. Itanium is IA64. It should be noted that AMD sold more
Opterons in the first year than Intel has sold in many year lifetime of
Itanium.
--
Don Burn (MVP, Windows DDK)
Windows 2k/XP/2k3 Filesystem and Driver Consulting
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"ma" <ma@xxxxxxxxxxx> wrote in message
news:%238tuOARQFHA.3144@xxxxxxxxxxxxxxxxxxxxxxx
> Does this means that we will have two version of PCs from now on? One with
> IA64 and the other with AMD64?
> Where can I read more about this two architectures?
>
> What processors are compatible with AMD64 ( I think it would be Atlon 64)
> and what is compatible with IA64? Is Pentium 4 IA64 compatible? What about
> Pentium M?
>
> Best regards
>
>
>
>
>
>
>
> "Calvin Guan" <cguan@xxxxxxxxxxxxxxxxxxxx> wrote in message
> news:%23DTaVbQQFHA.356@xxxxxxxxxxxxxxxxxxxxxxx
>> To add what Don said:
>>
>> IA64 compilers try to add fixups whenever it can for unaligned data
>> access. It results in big performance penalty. I've observed that 7
>> instruction bundles (21 instructions) were added to fix-up an 8-byte
>> unaligned access. AMD64 compiler won't do that.
>>
>> Unaligned access in Itanium will BSOD while AMD64 won't. This is a big
>> difference between 2 platforms while you're playing with kernel code. Low
>> level kernel debug is very very different too.
>>
>> Anyway, don't spend too much time and effort on Itanium. It doesn't
>> worth.
>>
>> ---------------------------------
>> Calvin Guan, Windows DDK MVP
>> Software Engineer, NT Driver
>> ATI Technologies Inc. www.ati.com
>>
>> "Don Burn" <burn@xxxxxxxxxxxxxxxx> wrote in message
>> news:Zyv7e.9$Gq6.8@xxxxxxxxxxx
>>> They have different instruction sets, so require you compile the driver
>>> with a different compiler. For a well written driver, there should be
>>> no difference, once it works on one architecture, it should work on the
>>> next. Of course supporting the different architectures is a good test of
>>> how well written your driver is!
>>>
>>>
>>> --
>>> Don Burn (MVP, Windows DDK)
>>> Windows 2k/XP/2k3 Filesystem and Driver Consulting
>>> Remove StopSpam from the email to reply
>>>
>>>
>>>
>>> "ma" <ma@xxxxxxxxxxx> wrote in message
>>> news:eIfMY$PQFHA.1096@xxxxxxxxxxxxxxxxxxxxxxx
>>>> Thanks for your reply.
>>>>
>>>> What is the difference between these two architectures?
>>>>
>>>> Is the window on these two platform works differently? (From the device
>>>> driver point of view)
>>>>
>>>>
>>>>
>>>> Best regards
>>>>
>>>>
>>>>
>>>> "Don Burn" <burn@xxxxxxxxxxxxxxxx> wrote in message
>>>> news:LVu7e.11815$_63.10809@xxxxxxxxxxx
>>>>> Yes, Windows supports the extended x86 architecture for 64 bits and
>>>>> Itanium. This is just like in the past when there were multiple 32-bit
>>>>> versions (x86, Mips, Power PC, Alpha).
>>>>>
>>>>>
>>>>> --
>>>>> Don Burn (MVP, Windows DDK)
>>>>> Windows 2k/XP/2k3 Filesystem and Driver Consulting
>>>>> Remove StopSpam from the email to reply
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> "ma" <ma@xxxxxxxxxxx> wrote in message
>>>>> news:OADOzRPQFHA.2788@xxxxxxxxxxxxxxxxxxxxxxx
>>>>>> Hello,
>>>>>>
>>>>>> I searched around to find information about windows 64 and came
>>>>>> across some definitions which struck me that there is more than one
>>>>>> window 64. Am I correct?
>>>>>>
>>>>>>
>>>>>>
>>>>>> Here is a section that I found in a web site:
>>>>>>
>>>>>>
>>>>>>
>>>>>> Win64 AMD64/EM64T Unicode (Windows XP/2003 x64 Edition)
>>>>>>
>>>>>> Win64 IA64 Unicode (Windows XP/2003 64-bit Edition)
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>> Best regards
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>>
>>>>
>>>>
>>>
>>>
>>
>>
>
>
.
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