RE: why the 16meg space size limit?

Oh.  So it should be no trouble for you to whip up a replacement for the
outdated and soon-to-be-demised OS/400, then, right?  Since you invented the
concepts in the first place?

Joe

> -----Original Message-----
> From: owner-mi400@midrange.com [mailto:owner-mi400@midrange.com]On
> Behalf Of Leif Svalgaard
> Sent: Monday, May 21, 2001 8:33 PM
> To: MI400@midrange.com
> Subject: Re: why the 16meg space size limit?
>
>
> > 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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