3 Oct
2020
3 Oct
'20
12:14 p.m.
I'm researching Multiuser DOS out of my own interest. A version made by Concurrent
Controls specifically. However, I have been unable to find documentation on it to satisfy
my curiosity on how it works and how it is configured. They must have somehow broken the
640K barrier or virtualized each user session, I'd like to understand it better. What
were it's limitations, I'm guessing that each user didn't get direct access to
hardware. Anyone out there have a document or experience with it?
Thanks,
Jonathan
3 Oct
3 Oct
8:02 p.m.
On Sat, 3 Oct 2020 at 18:14, Jonathan Haddox via cctalk
<cctalk at classiccmp.org> wrote:
I'm researching Multiuser DOS out of my own interest. A version made by Concurrent
Controls specifically. However, I have been unable to find documentation on it to satisfy
my curiosity on how it works and how it is configured. They must have somehow broken the
640K barrier or virtualized each user session, I'd like to understand it better. What
were it's limitations, I'm guessing that each user didn't get direct access to
hardware. Anyone out there have a document or experience with it?
It's just one fork of the old DR Concurrent DOS/386, descended from
Concurrent CP/M. The Wikipedia article is a good start:
https://en.wikipedia.org/wiki/Multiuser_DOS
I say this with slight bias as I wrote a chunk of it. Yes, I had some
experience with it, installing and supporting it on customers' systems
in the late 1980s.
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? gMail/gTalk/gHangouts: lproven at gmail.com
Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven
UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053
11:25 p.m.
I have Concurrent Link XM and Softlink and stuff like that here but I never
used it much.
b
On Sat, Oct 3, 2020 at 8:03 PM Liam Proven via cctalk <cctalk at classiccmp.org>
wrote:
On Sat, 3 Oct 2020 at 18:14, Jonathan Haddox via
cctalk
<cctalk at classiccmp.org> wrote:
I'm researching Multiuser DOS out of my own interest. A version made by
Concurrent Controls specifically. However, I have been unable to find
documentation on it to satisfy my curiosity on how it works and how it is
configured. They must have somehow broken the 640K barrier or virtualized
each user session, I'd like to understand it better. What were it's
limitations, I'm guessing that each user didn't get direct access to
hardware. Anyone out there have a document or experience with it?
It's just one fork of the old DR Concurrent DOS/386, descended from
Concurrent CP/M. The Wikipedia article is a good start:
https://en.wikipedia.org/wiki/Multiuser_DOS
I say this with slight bias as I wrote a chunk of it. Yes, I had some
experience with it, installing and supporting it on customers' systems
in the late 1980s.
--
Liam Proven ? Profile: https://about.me/liamproven
Email: lproven at cix.co.uk ? gMail/gTalk/gHangouts: lproven at gmail.com
Twitter/Facebook/LinkedIn/Flickr: lproven ? Skype: liamproven
UK: +44 7939-087884 ? ?R (+ WhatsApp/Telegram/Signal): +420 702 829 053
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