Path: utzoo!attcan!uunet!husc6!tut.cis.ohio-state.edu!bat.cis.ohio-state.edu!lum From: lum@bat.cis.ohio-state.edu (Lum Johnson) Newsgroups: comp.sys.next Subject: Re: Op Environment vs Op System (was: NeXT not revolutionary enough?) Message-ID: <28510@tut.cis.ohio-state.edu> Date: 28 Nov 88 18:10:17 GMT References: <471@wucs1.wustl.edu> <48@necbsd.NEC.COM> <26446@tut.cis.ohio-state.edu> <4833@polya.Stanford.EDU> <145@avsd.UUCP> <4163@encore.UUCP> <32289@bbn.COM> <27921@tut.cis.ohio-state.edu> <32711@bbn.COM> Sender: news@tut.cis.ohio-state.edu Organization: The Ohio State University, IRCC/CIS Joint Computing Laboratory Lines: 32 In article <32711@bbn.COM> jr@bbn.com (John Robinson) writes: >In article <27921@tut.cis.ohio-state.edu>, lum@bat (Lum Johnson) writes: >>TENEX, modeled mostly on DEC TOPS-10, > >I think this is a bit too strong. TENEX kept parts of TOPS-10 it could use, >and had a "compatibility mode" for running TOPS-10 programs, but a lot of the >ideas were fundamentally different. TENEX provided paged address space; >PDP-10 was segmented [i.e., BBN added a pager to the PDP-10 to get to TENEX]. I did not mean to imply that any actual TOPS-10 code was borrowed for TENEX. I was under the impression that it was a case mainly of reverse-engineering. TOPS-10 was the cleanest and tightest implementation of Project MAC's ideas, so it was used as the original reference model in developing TENEX. >>... implemented on a Honeywell machine, ported to Digital's pdp-10 ... > >huh? TENEX started out on and stayed with the PDP-10. ... Maybe you are >confused with the Arpanet IMP, which started on Honeywell 516 minis, then >went to H-316s, before jumping to a microcoded BBN-built machine in the early >1980's. Oh! (How do I draw a red face in ASCII?) This could well be. I was thinking of the Honeywell 6000 series, also 36-bit machines, if my memory has not failed me entirely. Undoubtedly that and the IMP history, taken together with apparently mis-recalled edit history comments, caused me to confuse myself. Whoops. Thanks for the reboot. :-) -=- -- Lum Johnson lum@osu-20.ircc.ohio-state.edu lum@tut.cis.ohio-state.edu "You got it kid -- the large print giveth and the small print taketh away." -------