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From: vik@lynx.uucp (Vikram Sohal)
Newsgroups: comp.realtime
Subject: Re: Real-Time Operating Systems
Message-ID: <7894@lynx.UUCP>
Date: 20 Jul 90 18:01:02 GMT
References: <2931@zipeecs.umich.edu>
Reply-To: vik@lynx.UUCP (Vikram Sohal)
Organization: Lynx Real-Time Systems Inc, Campbell CA
Lines: 36

In article <2931@zipeecs.umich.edu> walden@dip.eecs.umich.edu (Eugene Marvin Walden) writes:
>
>   I was wondering if anybody knows of any other commercial real-time operating
>
>  (list of real-time OSs deleted)
>
>systems, because there is no provision for handling deadlines. The Alpha op-
>
>       Eugene Walden (walden@dip.eecs.umich.edu)

We have a real-time UNIX-compatible OS called LynxOS that has a number of 
features you might find interesting, here are some of them:

- We are implementing a rate-monotonic deadline scheduler for NASA (we were
chosen by IBM as the operating system on space station FREEDOM project and 
are in the process of adding a number of these types of features to our 
standard product)
- A real-time ADA interface (again for space station)
- User-level threads (once again, for space station)
- High speed contiguous files
- reliable signals
- complete compatiblity with System V, BSD 4.3, and POSIX 1003.1 (this allows
us run NFS, X-Windows, MOTIF, etc)
- High performance real-time response: 450 microseconds on a 20 MHz 386 AT
with 2 waitstate RAM. 
- Multi-threaded, preemptive, reentrant, kernel (contains no AT&T code)
- ROMability

Currently LynxOS is available on the 80386, 68030, R3000, R6000, 88000, with
ports to i860 under way .

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Regards,
Vic Sohal
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