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  • Subject: Re: why the 16meg space size limit?
  • From: "Leif Svalgaard" <leif@xxxxxxxx>
  • Date: Mon, 21 May 2001 20:32:52 -0500

> So when would I expect to see OS/LEIF out?

been there, done that.
 
OS/LEIF1 was called the RC4000,
which Per Brinch Hansen and I wrote in 1967. In it we 
invented the process concept, message passing,
the micro-kernel, event handling, etc. The S/38-AS/400
was a confused re-implementation of these ideas.

OS/LEIF2 was a special-purpose OS for the
Danish Weather Service main computer (1971).

OS/LEIF3 was an OS for the Data General Nova
to allow it to be used as what in the AS/400 is called 
an IOP (1974).

OS/LEIF4 was a real-time OS to run a solar telescope
at Stanford. Still in operation since 1976.

OS/LEIF5 was a multitasking OS on the PC (1990)
allowing it to run any number of DOS sessions
concurrently.

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