[Simh] Lost PDP-11 OSes?

[Dave L]

Ahh MUMPS, never met it on the PDP11 but did on the VAX, the financial  
system Quasar (ACT) was written in it. Supported that at 2 companies I  
worked at tho while it was fast it wasn't so good with abrupt system  
outages, being the application was never coded to handle transaction  
integrity, neither was the language back then. You had to code to use the  
roll-back and checkpointing, it wasn't handled at the DB level like  
"proper" databases like Rdb were.



On Thu, 21 May 2020 19:53:53 +0100, Paul Koning <paulkoning at comcast.net>  
wrote:

>
>
>> On May 20, 2020, at 11:38 PM, Ray Jewhurst <raywjewhurst at gmail.com>  
>> wrote:
>>
>> I am trying to collect all the OSes that I can for the PDP-11 on Simh  
>> and I have noticed that there are a few missing.
>
> Along those lines: is there MUMPS-11 anywhere?  That's nicely obscure.   
> Another obscure one is CAPS-11, though that's probably far less  
> interesting.
>
> MUMPS was a database system, apparently a very good one.  It was used as  
> the core for ASSIST-11, a telephone directory assistance database.  In  
> other words, the database that 411 operators would consult to answer  
> your request for a phone number in a second or two.  Database lookup in  
> a million-record or so database, in around a second, on a PDP-11 in  
> 1978.  Nice.
>
> 	paul
>
>
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