Siris 8

Siris 8 was an operating system developed by the French company CII for its Iris 80 and Mitra 15 computers, and it was later replaced by Honeywell DPS 7. Jean Ichbiah worked at CII on the rewrite of the earlier Siris 7 system to make a more successful version. Siris 8 stayed compatible with Siris 7 applications and was praised for its memory management, which used the extended virtual addresses and spaces of the Iris 80. It served scientific, business and real-time work and ran in four modes: batch processing, local or remote, transaction processing through a subsystem called STRATEGE, time sharing, and real-time processing. The first uniprocessor version was delivered in February 1972 and a dual-processor version followed in September 1972 for the French Atomic Energy Commission. After CII merged with Honeywell-Bull, Siris functions were carried into the GCOS system by emulation, and the last version of Siris 8, C10, shipped in 1976.