KeyKOS
Operating system
Developer | Tymshare (Norm Hardy, Bill Frantz, Charlie Landau) McDonnell Douglas Key Logic |
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Written in | C |
OS family | Capability-based |
Working state | Discontinued |
Initial release | 1977; 47 years ago (1977) |
Latest release | Final / 1988; 36 years ago (1988) |
Marketing target | Research |
Available in | English |
Update method | Compile from source code |
Platforms | S/370 mainframe |
Kernel type | Microkernel |
Default user interface | Command-line interface |
Preceded by | GNOSIS |
Succeeded by | Extremely Reliable Operating System (EROS), CapROS, Coyotos |
Official website | cap-lore |
KeyKOS is a persistent, pure capability-based operating system for the IBM S/370 mainframe computers. It allows emulating the environments of VM, MVS, and Portable Operating System Interface (POSIX). It is a predecessor of the Extremely Reliable Operating System (EROS), and its successor operating systems, CapROS, and Coyotos. KeyKOS is a nanokernel-based operating system.[1]
In the mid-1970s, development of KeyKOS began at Tymshare, Inc., under the name GNOSIS. In 1984, McDonnell Douglas (MD) bought Tymshare. A year later MD spun off Key Logic, which bought GNOSIS and renamed it KeyKOS.[2]
References
- ^ The KeyKOS Nanokernel Architecture Archived 2011-06-21 at the Wayback Machine
- ^ "Roots of KeyKOS". Cap-lore.com.
External links
- Official website, Norman Hardy
- GNOSIS: A Prototype Operating System for the 1990s, a 1979 paper, Tymshare Inc.
- KeyKOS - A Secure, High-Performance Environment for S/370, a 1988 paper, Key Logic, Inc.
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Object-capability security
- Capsicum
- Fuchsia
- Genode
- GNOSIS → KeyKOS → EROS → CapROS
- Hydra
- iMAX 432
- Midori
- NLTSS
- seL4
- HarmonyOS (HarmonyOS NEXT)
- Phantom OS
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