RE: RAM Problem

From: nathan.zook@amd.com
Date: Wed Jan 12 2000 - 10:25:21 EST


The only thing that I would add is that you might want to try the latest
development kernel. It is possible that there is some reserved space in the
system below the 192M point, and this can cause problems if it is not
properly reserved. The e820 map will see & avoid these areas. There is a
problem right now with memory in the 0x0A0000 - 0x100000 region, but it can
be hacked around on a case-by-case basis for now.

Nathan

-----Original Message-----
From: Khimenko Victor [mailto:khim@dell.sch57.msk.ru]
Sent: Wednesday, January 12, 2000 1:03 AM
To: Daniel Zeaiter
Cc: linux-kernel@vger.rutgers.edu
Subject: Re: RAM Problem

On Wed, 12 Jan 2000, Daniel Zeaiter wrote:

> I am not at my Linux box now but I will try what you said.
>
> However I don't see why my mboard wouldn't detect more than than 64 MB
RAM?!
> I use an Aopen AX6BC Pro II (Millenium Edition :-) motherboard. Just
> released a month ago. The BIOS mem test detects all the memory, and
Windows
> 98 sees all the memory. Do you have any further suggestions?
>
So it's brand-spank new motherboard then. It's normal. There was original
old int15 function to detect memory. With 64MiB limitation. Then new
version was added (801). And shortly after that still never version was
developed (820). Quite a few vendors decided that since Windows98 supports
very recent function it's enough to implement only it (first one used by
some versions of DOS's HIMEM so it should be supported anyway).
Unfortunatelly only kernel 2.3 has support for latest function while 2.2
supports first two (while first two will report only amount of available
memory latest one returns complex table with different available memory
regions and so it's not trivial to support it).

> Thanks for your help,
> Daniel.
>
>
> -----Original Message-----
> From: Khimenko Victor <khim@sch57.msk.ru>
> To: daniel@academytiles.com.au <daniel@academytiles.com.au>;
> linux-kernel@vger.rutgers.edu <linux-kernel@vger.rutgers.edu>
> Date: Wednesday, 12 January 2000 14:21
> Subject: Re: RAM Problem
>
>
> >In <387B99D8.6EE26EDB@academytiles.com.au> Daniel Zeaiter
> (daniel@academytiles.com.au) wrote:
> >> Hi! I am using kernel 2.2.12 and RH 6.1.
> >
> >> My /proc/meminfo reports about 62.5 MB of physical RAM when I know that
> >> I have 192 MB. It is reporting the swap space correctly, however.
> >
> >> A snapshot of /proc/meminfo is attatched. Any suggestions?
> >
> >Use mem=191M command line parameter for LiLo (or any boot loader you
are
> >using). Your BIOS does not support functions needed to detect more then
> >64MiB RAM...
> >
> >
> >
> >
> >
>

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