SHARE Operating System
The SHARE Operating System (SOS) is an operating system introduced in 1959 by the SHARE user group. It is an improvement on the General Motors GM-NAA I/O operating system, the first operating system for the IBM 704. The main objective was to improve the sharing of programs.
| Developer | SHARE user group |
|---|---|
| Working state | Discontinued |
| Initial release | 1959 |
| Available in | English |
| Platforms | IBM 709, IBM 7090 |
| Preceded by | GM-NAA I/O |
| Succeeded by | IBM 7090/94 IBSYS |
| History of IBM mainframe operating systems |
|---|
The SHARE Operating System provided new methods to manage buffers and input/output devices. Like GM-NAA I/O, it allowed execution of programs written in assembly language.
SOS initially ran on the IBM 709 computer and was then ported to its transistorized 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.
References
- Alt, Franz Leopold, ed. (1959-07-03) [April 1959]. "(various)". Journal of the ACM. New York, USA: Association for Computing Machinery. 6 (2). ISSN 0004-5411.
Further reading
- Shell, Donald L. (April 1959) [October 1958]. "The SHARE 709 System: A Cooperative Effort". Journal of the ACM. 6 (2): 123–127. doi:10.1145/320964.320966. Archived from the original on 2020-06-17. Retrieved 2020-06-16. (5 pages)
- Boehm, Elaine M.; Steel, Jr., Thomas B. (April 1959). "The SHARE 709 System: Machine Implementation of Symbolic Programming". Journal of the ACM. 6 (2): 134–140. doi:10.1145/320964.320968. Archived from the original on 2020-06-04. Retrieved 2020-06-04. (7 pages)
- DiGri, Vincent J.; King, Jane E. (April 1959) [1958-06-11]. "The SHARE 709 System: Input-Output Translation". Journal of the ACM. 6 (2): 141–144. doi:10.1145/320964.320969. Archived from the original on 2020-06-17. Retrieved 2020-06-16. (4 pages) (NB. This was presented at the ACM meeting 11-13 June 1958.)
- SHARE 709 System Committee, ed. (June 1961) [1959]. SOS Reference Manual - SHARE System for the IBM 709 (PDF). New York, USA: SOS Group, International Business Machines Corporation. X28-1213. Distribution No. 1–5. Archived (PDF) from the original on 2020-06-18. Retrieved 2020-06-18.