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Your description ([nnn,nnn]) reminded me TOPS-10 and indeed, that AMOS link mentions this: "The similarities with DEC's operating systems, particularly TOPS-10,
by ZWoz 5y ago
Your description ([nnn,nnn]) reminded me TOPS-10 and indeed, that AMOS link mentions this: "The similarities with DEC's operating systems, particularly TOPS-10, were not lost on Digital Equipment Corporation". So, that file hierarchy model is even earlier, than 70s and 80s. Wikipedia says that TOPS-10 was released in 1967 (back then different name, renamed in 1970). DECsystem-10 was anyway pretty different hardware from modern computer, running from tapes and so on.
Sorry for that offtopic rambling, I am little bit enthusiastic every time, if I see something TOPS10 related.
- zanethomas 5y agoiirc (so many years) AMOS was based on DEC's RSTS hence a lawsuit which AM eventually won the western digital chipset that powered the first am systems was a five-chip 40-pin set connected by a private cmos bus ... probing with a scope was amusing the instruction set was basically identical to the pdp-11