CII 10070

The CII 10070 is a discontinued computer system from the French company CII. It was part of the first series of computers manufactured in the late 1960s under Plan Calcul.

The 10070 is a rebadged Scientific Data Systems (SDS) Sigma 7. In addition to the Sigma software, a new operating system was developed by teams from INRIA.

The 10070 is optimized for scientific calculation. It has 32-bit words, byte addressing, and 16 index registers. It can handle both batch processing, and time-sharing. It also has mémoire topographique as a standard feature, similar to virtual memory except that it is only intended for instant memory-to-memory remapping for performance reasons, with no support for managing swapping to disk. This is managed by the time-sharing monitor.

The 10070 served as the basis for the design of the Iris 50 and Iris 80 series, which were entirely manufactured by CII.

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