Re: Memory between 640K-1M

H. Peter Anvin (hpa@transmeta.com)
17 May 1998 05:14:22 GMT

Followup to: <00e201bd814d$d4c53200$04c809c0@Fake.Domain.com>
By author: "Anthony Barbachan" <barbacha@trill.cis.fordham.edu>
In newsgroup: linux.dev.kernel
>
> I was wondering if any of the 384K RAM between 640K-1M, not being used by
> adapters or shadowing, might be usable for something. I can't remember if
> this area was set aside by DOS or by the PC's original architecture. It
> seams wasteful to continue to just mark it as reserved. If usable, some of
> this memory could give some of those memory starved machines out there some
> more breathing room.
>

It's set aside by the PC architecture, and may not have RAM mappable
to it. Some chipsets let you map in some RAM here; I believe there is
a kernel patch floating around that supports some chipsets. Even on a
good day, don't expect more than about 200K.

-j[a

-- 
    PGP: 2047/2A960705 BA 03 D3 2C 14 A8 A8 BD  1E DF FE 69 EE 35 BD 74
    See http://www.zytor.com/~hpa/ for web page and full PGP public key
        I am Bahá'í -- ask me about it or see http://www.bahai.org/
   "To love another person is to see the face of God." -- Les Misérables


-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu