CDC SCOPE

Main tasks of SCOPE are controlling job execution, storage assignment, performing segment and overlay loading.

SCOPE is a multiprogramming operating system capable of running up to eight jobs, called control points, at one time.

One PP, identified as PP0 runs the Monitor Program (MTR) "that oversees or controls all other activities."

The remaining PPs will loop reading their input registers waiting for requests from the monitor.

[2] CDC systems were considered supercomputers, and customers were often large government agencies and research facilities.

[6][7][8] SCOPE was written by a programming team in Sunnyvale, California, about 2,000 miles from the CDC hardware division.

At the CDC Arden Hills, Minnesota laboratories (where they referred to SCOPE as Sunnyvale's Collection Of Programming Errors) they had a competing operating system, MACE.

The computer emulation community has made repeated attempts to recover and preserve CDC software.