> That was the state-of-the-art in OS concurrency in the early nineties. Many systems had pre-emptive multitasking in seventies and eighties. I think Amiga wa

> That was the state-of-the-art in OS concurrency in the early nineties. Many systems had pre-emptive multitasking in seventies and eighties. I think Amiga was the first implementation for consumers. Released in 1985. https://en.wikipedia.org/wiki/Amiga_1000 https://en.wikipedia.org/wiki/Amiga_1000