On Mon, 4 Sep 2000 16:07:49 -0400, Roger Turk wrote:
> Clarence Verge wrote:
>>> Or Botton wrote:
>> What do NT and Linux do to skip over the 640k limitation in Intel
>> hardware?
> I have no idea what NT might do, but I'll bet Linux re-maps the memory.
> - - Clarence Verge<<
> From what I understand, the 640K limitation is *not* a hardware limitation,
> but BG's limitation, i.e., an MSDOS limitation. BG put the limitation in by
> loading device/video drivers, ROM BIOS, etc., in the top 284K of addressable
> memory, whether or not the bottom 640K was fully populated. CP/M, IIRC, did
> not have this limitation. The memory addresses above 640K that are not used
> by MSDOS are available for use by users, viz., loading high, EMS paging, etc.
> If NT is compatible with MSDOS, I would doubt that it has contiguous memory
> and makes use of protected mode. However, I would suspect that Linux and
> other flavors of Unix do use contiguous memory.
OK folks,
I guess we could all use a refresher coarse. ;-) <VBG>
(this is the exact original message renamed from .mes to .txt)
http://www.angelfire.com/id/glenndoom/memory.txt
---(clipped from the original message headers)---
> From: [EMAIL PROTECTED]
> Date: Thu, 27 May 99 03:06:00 GMT
> To: [EMAIL PROTECTED]
_________________________________________________
Glenn McCorkle [EMAIL PROTECTED] North Jackson, Ohio, USA
DOS prog. for QV cameras http://www.angelfire.com/id/glenndoom/qvplay.html
Other stuff http:[EMAIL PROTECTED]/
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