On Sat, 3 Oct 2020 at 18:14, Jonathan Haddox via cctalk <cctalk@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: lpro...@cix.co.uk – gMail/gTalk/gHangouts: lpro...@gmail.com Twitter/Facebook/LinkedIn/Flickr: lproven – Skype: liamproven UK: +44 7939-087884 – ČR (+ WhatsApp/Telegram/Signal): +420 702 829 053
