Path: utzoo!attcan!uunet!husc6!mailrus!cornell!batcomputer!sun.soe.clarkson.edu!nelson
From: nelson@sun.soe.clarkson.edu (Russ Nelson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 640kb limit on DOS?
Message-ID: <NELSON.88Dec12161451@sun.soe.clarkson.edu>
Date: 12 Dec 88 21:14:51 GMT
References: <8043@ihlpl.ATT.COM> <3521@nicmad.UUCP> <593@tapa.UUCP> <10687@s.ms.uky.edu> <3534@nicmad.UUCP>
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In-reply-to: brown@nicmad.UUCP's message of 12 Dec 88 15:24:32 GMT

In article <3534@nicmad.UUCP> brown@nicmad.UUCP (Vidiot (Vid-e-it)) writes:

   In article <10687@s.ms.uky.edu> simon@ms.uky.edu (Simon Gales) writes:
   <In article <593@tapa.UUCP> larry@tapa.UUCP (Larry Pajakowski) writes:
   <>You can cheat on the 640k barrier with a 386 or an All Charge Card.

   PS/MS-DOS does not, nor can it ever, access anything except the first 1 MB
   of memory.  

Well, strictly speaking, you're wrong.  You can access 1 MB + 64 K -
16 bytes directly via HIMEM.SYS, and up to 8 Meg indirectly through
EMS.  Given that you have to load a segment register to access memory
(ack), you may as well be forced to make an EMS memory manager.  Just
doesn't add that much complexity.
--
--russ (nelson@clutx [.bitnet | .clarkson.edu])
To surrender is to remain in the hands of barbarians for the rest of my life.
To fight is to leave my bones exposed in the desert waste.