28 Apr
2007
28 Apr
'07
2:05 a.m.
--- Glen Slick <glen.slick at gmail.com> wrote:
On 4/26/07, Chuck Guzis <cclist at sydex.com>
wrote:
amount of I/O, when
IIRC, yes all 16 bit stuff gets implemented in V86
mode. At least w/Win95, according to Andrew Schullman
(or at least w/Chicago, but I guess we can safely say
this applies to the official Win95 release.)
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On 26 Apr 2007 at 16:31, Chris M wrote:
> So 3.1 (and I'm assuming here you don't mean NT
3.1)
> runs in real mode, yet is multitasking? I
guess
I'm
tired
maybe...
No, it runs in protected mode, except for a fair it switches to real mode. A fair amount of 95
was
that way, too.
To be accurate, neither 3.x running in 386 enhanced
mode nor 95
switched to real mode while running. They would run
lots of stuff in
V86 mode though.
Because DOS is a known quantity running in real
mode with no
protections, it's simple to set up your own
descriptors and gates and
launch your own protected mode app than having to
figure out what
someone else is doing.
It's been years since I've looked at this. If
EMM386 is loaded DOS is
actually running in V86 mode, isn't it?
-Glen