Kronos (computer)

Kronos is a 32-bit workstation of a proprietary architecture developed in the mid-1980s in Akademgorodok, a research center of the Russian Academy of Science near Novosibirsk.

In 1984, the Kronos Research Group (KRG) was founded by four students of the Novosibirsk State University, two from the Mathematical Department (Dmitry "Leo" Kuznetsov, Alex Nedoria) and two from the Physics Department (Eugene Tarasov, Vladimir Vasekin). At that time the main objective was to build home computers for the KRG members.

In 1985, the group joined the Russian fifth generation computer project START, in which Kronos became a platform for developing modular multiprocessor reconfigurable systems MARS and played a leading role in the development of the first Russian full 32-bit workstation and its software.

During 7 years (1984-1991) the group designed and implemented:

The project START was finished in 1988. During the post-START years (1988-91), a number of Russian industrial organizations had expressed interest in continuing the Kronos development and some had been involved into facilitating the construction of Kronos and MARS prototypes, including the design of a Kronos-on-chip. Nevertheless, changing in funding levels and the overall economic situation during perestroika did not allow those plans to be realized.

Instruction set design was based on Niklaus Wirth's Modula-2 workstation Lilith, developed at the Swiss Federal Institute of Technology of Zurich, which in turn was inspired by the legendary Alto developed at Xerox PARC.

The Modula-2-based Kronos was quite amenable to the basic principles of MARS, as Modula-2 is fundamentally modular, allowing programs to be partitioned into units with relatively well defined interfaces. These interfaces supported separate compilation of modules and separation of the module specifications from their implementation. The primary difference between Lilith and Kronos was that the latter was a 32-bit processor, compared with 16-bit Lilith, and Kronos incorporated a number of extensions to the instruction set to accommodate the inter-processor communication necessary in MARS.

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