It was, as far as I can remember, a straightforward port of SOS. It was originally written for the PDP-10 at the Stanford AI Lab, but since the 20 had the same architecture DEC was able to use it pretty much as-is. They may have had to translate from Stanford's assembler to their own; not sure how different they may have been.
![[personal profile]](https://www.dreamwidth.org/img/silk/identity/user.png){kind=small}
(no subject)
Date: 2017-05-26 03:58 am (UTC)