walden@dip.eecs.umich.edu (Eugene Marvin Walden) (07/24/90)
First off, I really would like to thank all who replied. I am amazed at the number of real-time operating systems out there. Here is a summary of the replies I received: 1. Regulus (Alcyon) 2. REAL/IX (Modcomp) 3. CX/RT (Harris) 4. Chimera II (CMU-- not really commercial) 5. LynxOS (Lynx) 6. FlexOS (???) 7. RTE (HP) 8. pSOS (Software Components Group) 9. MTOS (Industrial Programming, Inc.) 10. PDOS (Eyering Research) 11. C Executive (JMI Software Consultants) 12. RTUX (Emerge Systems) 13. CSX (Cytek) 14. AMX (Kadak) 15. UniFlex (Technical Systems Consultants) 16. IDRIS (Whitesmiths) 17. RTXC (A.T. Barrett & Associates) 18. USX (U.S. Software) 19. UMAX V OS (Encore) 20. VRTX (Ready Systems) 21. VxWorks (Wind River Systems) 22. iRMX (Intel) 23. QNX (Quantum Software Systems) 24. Alpha (Concurrent Computer Corp.) 25. OS9, OS9000 (Microware) Well, that is it for now. Thanks again. - Eugene Walden (walden@dip.eecs.umich.edu)
bdf@rex.cs.tulane.edu (Brett Fleisch) (07/24/90)
That was a very nice list. It would be more helpful if for each OS on the list one or two references in conference proceedings/ select journals could be found. Would anyone be interested in re-polling to gather the extra information? -- brett@cs.tulane.edu
black@yoyodyne..westford.ccur.com (Sam Black) (07/24/90)
> First off, I really would like to thank all who replied. I am amazed at the >number of real-time operating systems out there. Here is a summary of the >replies I received: > > <summary omitted for brevity> You left off RTU (Concurrent Computer Corporation). I'm sure I saw it mentioned in a previous news article, so it must have been an oversight. - sam ------------------------------------------------------------------------------- Once you remove the absurdity from human existence, there isn't much left. __________ / _______/__ ...!{decvax,uunet}!masscomp!black /__/______/ / black@westford.ccur.com Concurrent /_________/ Computer Corporation -------------------------------------------------------------------------------
peter@ficc.ferranti.com (Peter da Silva) (07/24/90)
Hey, if you're going to include HP's RTE, you need to add DEC's RT-11 and RSX (small and big real-time for the PDP-11). -- Peter da Silva. `-_-' +1 713 274 5180. 'U` <peter@ficc.ferranti.com>
tdonahue@bbn.com (Tim Donahue) (07/25/90)
In article <2946@zipeecs.umich.edu>, walden@dip (Eugene Marvin Walden) writes: > > First off, I really would like to thank all who replied. I am amazed at the >number of real-time operating systems out there. Here is a summary of the >replies I received: > > 1. Regulus (Alcyon) <more operating systems deleted> > 8. pSOS (Software Components Group) <left in because we have it on the TC2000 #) > <more operating systems deleted> There are actually at least two other systems that have not been mentioned, one that is still for sale (I think) and one that is not. The first, RT-11, is/was sold by Digital and runs on PDP-11 computers. I'm amazed that no one has mentioned it... The other, MSOS (short for Mass Storage Operating System) was developed by Control Data for their real-time minicomputer family. Installed systems running MSOS contol oil refining and transportation in New Jersey, Texas, and Delaware, bill parking lot customers in the New York area, and control electric power transmission in many parts of the United States, among other things. Cheers, Tim
swilson@pprg.unm.edu (Scott Wilson [CHTM]) (07/26/90)
In article <58389@bbn.BBN.COM> tdonahue@bbn.com (Tim Donahue) writes: >In article <2946@zipeecs.umich.edu>, walden@dip (Eugene Marvin Walden) writes: >> >mentioned, one that is still for sale (I think) and one that is not. >The first, RT-11, is/was sold by Digital and runs on PDP-11 computers. >I'm amazed that no one has mentioned it... It's even better than that now! We use an extension to RT-11 called TSX+ from S&H Computer Systems that gives you multi-user, multitasking RT-11 with a ton of enhancements. Very easy to use, and contains most of the usual list of real-time OS requirements. Highly reccomended. It works by replacing just the RT-11 kernel with a new one - everything else is the same. Device drivers and all... Scott Wilson swilson@bullwinkle.unm.edu
mcculley@alien.enet.dec.com (07/31/90)
In article <I_V4WE4@xds13.ferranti.com>, peter@ficc.ferranti.com (Peter da Silva) writes... >Hey, if you're going to include HP's RTE, you need to add DEC's RT-11 and >RSX (small and big real-time for the PDP-11). >-- >Peter da Silva. `-_-' >+1 713 274 5180. 'U` ><peter@ficc.ferranti.com> Glad somebody remembers us! Both RT-11 and the RSX family are still under active development at the present time. RSX is now actually five (or maybe even six) specific products. There's RSX-11S, a relatively small runtime system (primarily downline loaded for execute-only network targets); RSX-11M, the full-function system corresponding to -11S; RSX-11M-PLUS, optimized for larger PDP-11 configs; Micro/RSX, a user-friendly subset of M-PLUS; and CP/RSX, or Co-Processor/RSX, which runs on a KXJ-11 coprocessor in a VAX Q-bus backplane as a heterogenous multiprocessor system cooperating with a process running under VMS. There's also VAX-11/RSX, which supplies the Application Migration Executive to allow running an RSX application under VMS (primarily for porting existing RSX code to VAXen, also provides some development host facilities to target PDPs). Given that PDP-11s just celebrated their twentieth anniversary (by introducing new models) and that RSX and RT have both been around for most of that time, there's probably many more manyears of development in either than in almost any other entry on that list of realtime operating systems. PDP-11s forever! - Bruce McCulley PDP-11 Software Engineering Digital Equipment Corp.
david@marvin.jpl.oz (David Magnay) (07/31/90)
I dont think I saw any reference to National Semiconductor's EXEC rtos. Written in NS32000 assembler, offers a kernal-only operating system. Has got quite a lot of goodies, but appalling doco. ( I dont think anyone past the author understood it). About 4kBytes compiled. .......................................................... Any bad ideas are all my own. The company I work for has run out. .......................................................... David Magnay mail david@marvin.jpl.oz.au Boral Elevators was: Johns Perry Lifts 45 Wangara Road, Cheltenham 3192 phone (03) 584-3311 Victoria, Australia O/seas +61 3 584 3311