i586 instructions on Cyrix 686 and AMD K5 processors

Can anyone tell me if the following instructions are supported on the
AMD K5 and the original Cyrix 686 processors?

cmpxchg8b
rdmsr
rdtsc
rsm
wrmsr

Mark.

--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/

Mark Hobley wrote:
Can anyone tell me if the following instructions are supported on the
AMD K5 and the original Cyrix 686 processors?

cmpxchg8b
rdmsr
rdtsc
rsm
wrmsr


Check out the CPUID instruction, that will give you all you need to know
about which instructions come with what. If the CPUID instruction itself
is not supported, then you can only think of the processor as 486-class
or lower.

Yousuf Khan

Yousuf Khan wrote:

Check out the CPUID instruction, that will give you all you need to know
about which instructions come with what.

Thanks. But unfortunately, it only tells me about the machine that I run
in on. I am working on some documentation and making some kernel bug fixes
for such machines and I need accurate information about the presence or
absence of those specific instructions on various Cyrix 686 and AMD K5
and K6 series processors.

Mark.

--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/

On Mar 15, 3:08*pm, (Mark
Hobley) wrote:
Thanks. But unfortunately, it only tells me about the machine that I run
in on. I am working on some documentation and making some kernel bug fixes
for such machines and I need accurate information about the presence or
absence of those specific instructions on various Cyrix 686 and AMD K5
and K6 series processors.

Mark.

Try he
x86 - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/X86

YKhan wrote:
Try he
x86 - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/X86

Yeah. Unfortunately that information is not entirely accurate. The
Wikipedia table is one of the articles that I am working on. :-P

Cheers,

Mark.

--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/

Mark Hobley wrote:
YKhan wrote:
Try he
x86 - Wikipedia, the free encyclopedia
http://en.wikipedia.org/wiki/X86

Yeah. Unfortunately that information is not entirely accurate. The
Wikipedia table is one of the articles that I am working on. :-P

Cheers,

Mark.


There was a website called sandpile.org or something like that. Had a
lot of info on older x86 processors.

Yousuf Khan

Yousuf Khan wrote:

There was a website called sandpile.org or something like that. Had a
lot of info on older x86 processors.

Yeah. I've been there too. Unfortunately, the links to the programmers
reference manuals that I require do not work.

Mark.

--
Mark Hobley
Linux User: #370818 http://markhobley.yi.org/

On Mar 16, 5:08*pm, (Mark
Hobley) wrote:
Yousuf Khan wrote:

There was a website called sandpile.org or something like that. Had a
lot of info on older x86 processors.

Yeah. I've been there too. Unfortunately, the links to the programmers
reference manuals that I require do not work.

Mark.

--
Mark Hobley
Linux User: #370818 *http://markhobley.yi.org/

That's all I got.

Yousuf Khan

On Mon, 16 Mar 2009 21:08:01 GMT,
(Mark Hobley) put finger to
keyboard and composed:

Yousuf Khan wrote:

There was a website called sandpile.org or something like that. Had a
lot of info on older x86 processors.

Yeah. I've been there too. Unfortunately, the links to the programmers
reference manuals that I require do not work.

Mark.

Can you tell us which document numbers you need? I have some old AMD
CD-ROMs that may have this information. Not sure about Cyrix, though.

- Franc Zabkar
--
Please remove one 'i' from my address when replying by email.

Check out the CPUID instruction, that will give you all you need to know
about which instructions come with what. If the CPUID instruction itself
is not supported, then you can only think of the processor as 486-class
or lower.