| Developer | Tymshare (Norm Hardy, Bill Frantz, Charlie Landau) McDonnell Douglas Key Logic |
|---|---|
| Family | Capability-based |
| Working state | Discontinued |
| Released | 1977 (age 49) |
| Latest release version | Final |
| Latest release date | 1988 (age 38) |
| Marketing target | Research |
| Programmed in | C |
| Language | English |
| Update model | Compile from source code |
| Supported platforms | S/370 mainframe |
| Kernel type | Microkernel |
| Ui | Command-line interface |
| Preceded by | GNOSIS |
| Succeeded by | Extremely Reliable Operating System (EROS), CapROS, Coyotos |
| Website | cap-lore.com/CapTheory/KK |
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.