CDC 6000/7000 operation, was: Virtual memory
RichA at vulcan.com
Tue Nov 9 14:02:12 CST 2010
From: Chuck Guzis
Sent: Tuesday, November 09, 2010 8:39 AM
> Up until about 1975 or so, almost no part of the operating system
> resided in the CPU. OS activity was the province of the PPs--and
> users did not have the ability to write their own PP programs.
This does not accord with my recollection of the 6600 at all.
I started college at the University of Texas in September, 1969, and
was immediately exposed to the CDC 6600: Since I had learned FORTRAN IV
the preceding spring, the work-study folks sent me over to the Comp Center
to interview for a job.
I'm afraid my IBM bigotry kept me from getting the position. However,
I met CS grad students through my job at the CAI Lab (IBM 1800 and 360
based) who were working on the 6600. One of them was a whiz at writing
I signed up for a COMPASS class in the fall of 1970; besides learning
about the CPU, there were sections of the syllabus on PPU programming.
Since this was an undergraduate intro-level class, I can't imagine that
they were teaching anything privileged and/or dangerous.
But it's 40 years ago, so I may very well have killed off those neura.
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