SHARE Operating System
| Developer | SHARE user group |
|---|---|
| Working state | Discontinued |
| Initial release | 1959 |
| Available in | English |
| Platforms | IBM 704, IBM 709 |
| History of IBM mainframe operating systems |
|---|
|
DOS/360 and successors (1966)
|
|
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 appears in the April, 1959, ACM Journal.
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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