Convergent Technologies Operating System: Difference between revisions

Revision as of 19:17, 10 June 2007

Revision as of 19:36, 10 June 2007

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The '''Convergent Technologies Operating System''', also known variously as '''CTOS''', '''BTOS''' and '''STARSYS''', was a modular, [[message-passing]], multi-process based [[operating system]].

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There was an always-resident debugger.

The system shell was extensible — youit was possible couldto define new commands. EachTo commandget couldthe requestparameters, youthe fillsystem outwould adisplay the form specifyingwhich thewas parametersto itbe needed.filled by the user.

A game included with the OS proved to be very popular, programmed using the font generator to do simple graphics: "[[Rats Of The Maze]]".

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There was a transparent peer-to-peer network running over serial [[EIA-422|RS-422]] cables, and later over twisted pair with RS-422 adapters. Each workgroup, called a "cluster," was connected via a daisy-chain topology to a server, called a "master." The workstations, normally [[diskless workstation|diskless]], were [[networking booting|booted over the cluster network]] from the master, and could optionally be locally booted from attached hard drives.

YouIt couldwas possible to custom-link the operating system to add or delete features.

[[Convergent Technologies (Unisys)|Convergent Technologies]]' first product was the IWS (Integrated Workstation) based on the [[Intel 8086]] processor, which had CTOS as its operating system. This was a modular operating system with built in [[local area networking]]. CTOS supports multiple processes or threads, and message-based inter-process communication.