On 5/13/2013 1:14 PM, Conrad Kostecki wrote:
Am 13.05.2013 15:46, schrieb Stuart Henderson:
On 2013-05-10, Conrad Kostecki <[email protected]> wrote:
Am 10.05.2013 16:14, schrieb fabrice bessettes:
Hi list,
[...]
But I was wondering if the Soekris CPU E6xx is really a 64 bit CPU
? or
if the openBSD kernel amd64 includes 32-bit in it. In this case, I
might
reinstall my system.
OpenBSD/amd64 only runs in 64-bit mode.
Seems so. Ubuntu and Gentoo work perfectly fine with a 64-Bit kernel
out
of the box. Without any patching. So the CPU seems to be 64-Bit
capable.. I don't know, why Intel says, that this is not possible.
Cheers,
Conrad
The CPU is supposed to only support 32-bit mode but it appears that the
6501 bios may not set this up correctly.
I don't understand. How can a 32-Bit CPU work in 64-Bit Mode? I can't
image, that the BIOS makes the difference. Linux shows the flags lm,
which indicated, that it supports "AMD64/EM64T"?
The CPU was produced as a 64-bit chip, but for reasons X or Y or Z, the
manufacturer is only going to support 32-bit. Maybe there are bugs with
respect to 64-bit, maybe it's a marketing thing. In the end, they market
the chips as 32-bit, nicely omitting any mention of 64-bit support, and
then ship the chips with notes to the people using them saying "we
support: 32-bit." The person using the chip (Soren in this case) is the
one obligated to only expose the 32-bit aspects of the chip.
In short, as per Intel, using the 6501 in a 64-bit mode is unsupported.
With that said, I've been running my 6501s in 64-bit mode exclusively,
ever since I got one (two weeks after release?). I've not had any
problems with them, but then again, I may not be using them in a way
that triggers issues, should there be any.
Cheers,
Conrad
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--Kyle
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