Messages in this thread | | | From | (H. Peter Anvin) | Subject | Re: Memory between 640K-1M | Date | 17 May 1998 05:14:22 GMT |
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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
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