From: "Alexei A. Frounze" <see_below AT the_message_body DOT com>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: far pointers
Date: Sat, 10 Jun 2000 02:46:40 +0400
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To: djgpp AT delorie DOT com
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Eli Zaretskii wrote:
> 
> Thanks.  Some comments:
> 
>      In V86 mode, the 386 operates in real mode but allows some programs...
> 
> I believe you meant to say "protected mode".

yup.

>   That means programs like DOS can coexist with protected-mode programs.
> 
> I don't think V86 has anything to do with RM and PM programs coexisting.
> perhaps I'm missing something in your reasoning.

:) V86 mode was invented to provide compatibility with old 8086 stuff while
CPU is in PMode. DOS itself works normally in V86. I think he is correct.

>   The memory management unit (MMU) on the 386 supports virtual memory
> 
> This is inaccurate: VM is not implemented by MMU, but by software that hooks
> the Page Fault exception and pages memory in and out as needed.

Perhaps he meant multiple V86 tasks... From Virtual 8086 point of view it's
a virtual memory. Of course it has nothing about memory swapping.

bye
Alexei A. Frounze
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