[Info-vax] OS implementation languages

[Bob Eager]

On Fri, 25 Aug 2023 17:38:31 +0100, Roy Omond wrote:

> On 25/08/2023 14:14, Bob Eager wrote:
>> On Thu, 24 Aug 2023 17:39:41 +0000, Simon Clubley wrote:
>> 
>>> That's seriously interesting thanks. So, contrary to what some are
>>> saying,
>>> the idea of writing an OS in such a way was well established by the
>>> mid-1970s. (I'm going off historical documents and the recollections
>>> of people here as in the mid 1970s I wasn't even in secondary school
>>> yet. ).
>>>
>>> One thing of interest above is you say the OS itself was also written
>>> in this language. Are you referring to the kernel-level code here or
>>> something else ?
>> 
>> And starting in 1966...
>> 
>>   http://www.ancientgeek.org.uk/EMAS/EMAS_Papers/
>> EMAS_The_Edinburgh_Multi_Access_System.pdf
>> 
>> Or for my lecture on it (I was involved, as you will see):
>> 
>>   http://www.bobeager.uk/emas/
> 
> Just adding another toot of the horn.  I am an Edinburgh Computer
> Science graduate, so my early background is EMAS and its implementation
> language IMP, both of which I still miss today.  A good number of my
> class colleagues ended up at DEC (remember Spiralog ?).

I am looking at resurrecting EMAS. There are IMP compilers around, still. 
Someone I know has written a viable IMP to C translator.

And you may find the end of my lecture rather interesting.