On 16-Feb-16 12:12, [email protected] wrote: > On Tue, 16 Feb 2016 11:52:17 -0500 > Paul Koning <[email protected]> wrote: > >>> On Feb 16, 2016, at 9:56 AM, Timothe Litt <[email protected]> wrote: >>> >>> ... >>> Nonetheless, Brooks (@IBM) definitely gets credit for the first >>> commercial line of architecturally (forward) compatible machines. Prior >>> to that inspiration, every new machine was unique and most software >>> started over (including compilers). >> I'm not sure that "first" is accurate. If in the sense of a series of >> machines for which that feature is specifically marketed, perhaps. But >> the PDP4/7/9/15 is another example that started somewhat earlier. (PDP1 >> doesn't quite match, as I understand it.) CDC 6000 series definitely >> fits your definition, and those came out at the same time as the 360. >> The Burroughs B5000 series is somewhat older (1961, says Wikipedia). > More correctly we should say the IBM S/360 was the first series of > computers to be designed around an architecture so that the smallest and > largest models in the lineup were all architecturally identical (mostly!) > and that could all run the same OS (mostly). The upward compatibility came > later, but was enabled by a lot of sound architecture decisions including > one design regardless of capacity. > >> Of all those, the IBM 360 descendants are perhaps the most commercially >> successful, and also probably the longest lived. > Not perhaps or probably, but certainly. > _______________________________________________ > Simh mailing list > [email protected] > http://mailman.trailing-edge.com/mailman/listinfo/simh If you're going to use a generic address like "[email protected]", please add a name comment (e.g. "Fred Brooks" <[email protected]>) and/or a signature.
Everyone else makes it clear who they are.... Thanks.
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