[geeks] Oldest OS Still Developed

[John Francini]

TOPS10 started life as "Monitor" for the DEC PDP-6 in 1963.   
According to Wikipedia, this predates the System/360 by a year or so...

john

On 18 Oct 2006, at 14:10, Geoffrey S. Mendelson wrote:

> On Wed, Oct 18, 2006 at 01:56:06PM -0400, Charles Shannon Hendrix  
> wrote:
>> 	- UNIX
>
> Late 1970's.
>
>> 	- MVS
>
> Early to mid 1960's
>
>> 	- DOS/VE (I *think* it is still developed)
>
> I think it post dates OS/360 from which MVS derives, but I am not  
> sure.
> By 1969 you had TOS (which I think was no longer supported), DOS,  
> OS/360,
> ACP and VM/360.
>
> OS/360 still lives on as MVS, VM is still around, but most of it  
> migrated
> to hardware in the late 1980s. I don't know if anyone still uses ACP,
> and I have never seen a TOS system, but I have been using 360's  
> (and on)
> since the late 1960s.
>
>> 	- PSOS
>> 	- OS/9
>
> Don't know about those.
>
>> 	- RT/11
>
> PDP-11s? New hardware my friend. :-) Weren't they the first  
> machines to use
> that silly reversed byte order?
>
>> All of those are still used, and the last two I think might even  
>> still
>> be maintained since they are still used in embedded systems and PDP
>> clones.
>>
>> Do the space shuttle computers have any kind of OS?
>
> So? OS/360 was used by theMercury program, the shuttle is another new
> system. The shuttle's computers were so bad that the astronauts were
> carrying Grid Laptop PCs on flights.
>
> Geoff.
>
> -- 
> Geoffrey S. Mendelson, Jerusalem, Israel gsm at mendelson.com  N3OWJ/ 
> 4X1GM
> IL Voice: (07)-7424-1667  Fax ONLY: 972-2-648-1443 U.S. Voice:  
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