I think it had Algol and Fortran and Assembly Language as it's
languages.
--
It was probably either DOS-M or an early RTE
A lot of work has been done recently getting these OSes
running in SIMH, so it should be possible. I don't know
if Bob has put bootable disc images up for them yet, though.
I have all of the manuals scanned, but not on line yet for
these two systems.