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Welcome to the Helios-NG wiki!
To get an in depth understanding what Helios is, can and could do, have a look at the Wikipedia article and if that's not enough: here's the full documentation (PDF, 636 Pages!)
The projects home is at www.geekdot.com which also provides some background about Transputers, the natural habitat of Helios.
This project is about reviving the micro-kernel, UNIX-like OS for parallel computers called Helios, once created by a company called Perihelion, founded by Tim King. Helios mainly ran on INMOS Transputers but was also ported to Texas Instruments TMS320C40 DSPs and the (early) ARM CPU Family. The revived version is called "Helios Next Generation" or Helios-NG for short.
As you might have heard/read, Transputers and their 'primary OS' Helios (I don't count OCCAM as an OS) are one of my main pet-projects.
The sources of Helios were available in the Web for quite some times.
Most serious developments back in those days (1988-91) were made on serious systems, namely SUN boxes. To compile such 'vintage code' today, it's wise to start with a similar 'vintage setup', i.e. same platform, not too-recent OS and a compiler suite suiting the era. This is/was the task for the first phase (see "a rough plan" page).
And before you ask: Yes, I got the permission from Tim King himself to "do whatever I like with the Helios sources" - so we're perfectly legal here, there wasn't any other company after Perihelion having rights attached to Helios.
Therefore I'll proudly put Helios into open source under GPLv3 license.