SHARE Operating System
| SHARE Operating System | |
|---|---|
| Developer | SHARE user group |
| Working state | Discontinued |
| Initial release | 1959 |
| Available in | English |
| Supported platforms | IBM 704, IBM 709 |
| History of IBM mainframe operating systems |
|---|
The SHARE Operating System (SOS) was created in 1959 as an improvement on the General Motors GM-NAA I/O operating system, the first operating system, by the SHARE user group. The main target was to improve the sharing of programs over GM-NAA I/O.
SHARE Operating System provided new methods to manage buffers and input/output devices, and, like GM-NAA I/O, allowed execution of programs written in assembly language.
Initially, it worked on IBM 709 computer and its transistorized compatible successor the IBM 7090.
A series of articles describing innovations in the system[1] appears in the April, 1959, Journal of the Association for Computing Machinery.
In 1962, IBM discontinued support for SOS and announced an entirely new (and incompatible) operating system IBM 7090/94 IBSYS.
See also
- GM-NAA I/O, the first operating system and the inspiration for the SHARE Operating System.
- Timeline of operating systems
External links
- Upload of the SHARE Operating System software and documentation (partial archive)
- The SOS Reference Manual
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