Path: utzoo!attcan!uunet!ncrlnk!ncr-sd!hp-sdd!hplabs!sm.unisys.com!cs.utexas.edu!rutgers!mailrus!cornell!rochester!kodak!gardner
From: gardner@kodak.UUCP (dick gardner)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 640kb limit on DOS?
Keywords: PS-2/50 DOS
Message-ID: <1531@kodak.UUCP>
Date: 13 Dec 88 13:14:31 GMT
References: <8043@ihlpl.ATT.COM> <3521@nicmad.UUCP> <593@tapa.UUCP> <10687@s.ms.uky.edu> <3534@nicmad.UUCP>
Reply-To: gardner@kodak.UUCP (dick gardner)
Distribution: na
Organization: Eastman Kodak Co, Rochester, NY
Lines: 35

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.
><> ...
><
><With a 386 box, running DOS 3.x, how does one cheat on the 640k limit.
><Yes the box has bios shadow ram and exteded memory, but how exactly can
><a 386 help you break DOS's 640k limit?
>
>PS/MS-DOS does not, nor can it ever, access anything except the first 1 MB
>of memory.  The first 640K being RAM and the rest being various hardware.
>DOS is designed for the lowest common chip, the 8088, which only knows 1MB.
>
>Even if you run Windows/386, DesqVIEW or VM/386, the DOS partition that is
>created can only run like an 8088, ie, 640K of user memory for programs.
>
>The only way to get more is to run OS/2 and applications designed for OS/2.
>-- 
The ONLY way (if you want much smaller programs that run much faster) is to
run QNX and applications designed for QNX. For now, DOS runs as a guest
under QNX, but soon, the Quantum people will introduce a new product, RUNDOS,
that will allow multiple copies of DOS applications run directly as tasks.

Stay tuned for more developments.

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   Dick Gardner -- Eastman Kodak Co.  Rochester, New York  14652-4201
                   Phone: (716) 477-1002
                   UUCP: {allegra,rutgers}!rochester!kodak!gardner

  "Brain as big as a planet and you want me to do WHAT??!?!!?"  -------
     					     Marvin, the Paranoid Android
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