NCR 315-100

NCR 315-100

The NCR 315-100 Mainframe computer is the second version of NCR's second generation and is based on the original NCR-315. Like the original 315 it has a 600 nanosecond clock cycle, 10-40K Memory. The primary difference between the older NCR 315 and the 315-100 was the inclusion of the Automatic Recovery Option (ARO). One of the problems with early generation of computers was that when a memory or program error occurred, the system would literally turn on a red light and halt. The normal recovery process was to copy all register and counter setting from the console light panel, and them to restart the program that was running at the time of the error. Usually the restart had was from the very beginning of the program.

The upgrade to the 315 required the removal of approximate 1800 wire-wrapped connection on the backplane, and the installation of approximately 2400 new point to point wired connection.


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