Hi!
> At the moment I know next to nothing about that "virtual x86 mode" - and
> I was hoping that CPU can be made to switch to that mode and then to boot
> even different OS into each "instance"
That is exactly what Windows does, but the instances are called tasks.
Because DOS is not
Some possibilities, haven't checked them out myself
Concurrent DOS 386 https://en.wikipedia.org/wiki/Multiuser_DOS#CCP/M-86
https://winworldpc.com/product/digital-research-con/386-3x
PC-MOS/386 https://en.wikipedia.org/wiki/PC-MOS/386
https://github.com/roelandjansen/pcmos386v501
On Wed, Sep 2, 2020 at 10:10 AM ZB wrote:
> On Wed, Sep 02, 2020 at 03:56:26PM +0200, Mateusz Viste wrote:
>
> > https://en.wikipedia.org/wiki/DESQview
>
> Indeed I recall that name - but somehow never used it before. Does it do
> exactly what I've described? Like - for example - I could "split"
On Wed, Sep 2, 2020 at 5:47 AM tom ehlert wrote:
>
> UNIX System V certainly was connected to serial terminals (Televideo,
> VT100, ...)
>
> and it had the VI visual editor with definitively cursor movement
> across the screen, even when the terminal had no cursor keys.
I was a system
On Wed, Sep 02, 2020 at 04:23:47PM +0200, Mateusz Viste wrote:
> I wonder how far one could get with just an emulated 8086 core, 640K of
> mapped memory and a simulated BIOS.
At the moment I know next to nothing about that "virtual x86 mode" - and
I was hoping that CPU can be made to switch to
No, it was application-level, and AFAIR it required the applications not
to be too greedy about what they do. I think that what you describe now
isn't possible without introducing some form of (expensive) emulation to
avoid the different systems to fight for shared resources. At the very
least
On Wed, Sep 02, 2020 at 03:56:26PM +0200, Mateusz Viste wrote:
> https://en.wikipedia.org/wiki/DESQview
Indeed I recall that name - but somehow never used it before. Does it do
exactly what I've described? Like - for example - I could "split" 486 into
four x86 CPUs, then I can use one instance
On 9/2/2020 2:29 AM, tom ehlert wrote:
UNIX System V certainly was connected to serial terminals (Televideo,
VT100, ...)
and it had the VI visual editor with definitively cursor movement
across the screen, even when the terminal had no cursor keys.
cursor movement is not tied to memory-mapped
DOSemu relies on a number of Linuxisms, hence cannot be used as such
kind of bootstrap. What you think about is called DESQview.
https://en.wikipedia.org/wiki/DESQview
Mateusz
On 02/09/2020 15:48, ZB wrote:
If I'm correct, Dosemu uses "virtual x86 mode" of 386 and later processors.
But
If I'm correct, Dosemu uses "virtual x86 mode" of 386 and later processors.
But Dosemu of course needs "host OS".
I wonder does there exist any utility that offers "virtual x86 mode" and
acts as "host" by itself? Suppose we have (quite modest for today) computer
with 386/486 and 4 MB RAM.
> And as there aren't many tools where ZB's idea would make
> sense in his opinion, it seems a bit like brewing up a tempest in a
> teacup... ;-)
+1
> And another reason why this might not be in general a good idea is if we
> take compatibility with old(er) DOS software/environments serious,
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