Data General RDOS
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| Developer | Data General |
|---|---|
| OS family | Data General |
| Working state | Discontinued |
| Source model | Closed source |
| Initial release | 1972 |
| Latest release | RDOS 7.5 / 1986 |
| Platforms | NOVA, microNOVA, Eclipse |
| Kernel type | Monolithic |
| Default user interface | CLI |
| License | restricted, per machine |
RDOS (Real-time Disk Operating System) was a real-time operating system released in 1972[1]. Intended for the popular Data General Nova and Eclipse minicomputers, the software was only sold as a bundle with the minicomputer.[2]
RDOS was capable of multitasking, with the ability to run up to 32 what were called "tasks" (similar to the current term threads) simultaneously on each of two grounds (foreground and background) within a 64 KB memory space. Later versions of RDOS were compatible with Data General's 16-bit Eclipse minicomputer line.[3]
A cut-down version of RDOS, without real-time background and foreground capability but still capable of running multiple threads and multi-user Data General Business Basic, was called Data General Diskette Operating System[4] (DG-DOS or, now somewhat confusingly, simply DOS); another related operating system was RTOS, a Real-Time Operating System for diskless environments. RDOS on microNOVA-based "Micro Products" micro-minicomputers was sometimes called DG/RDOS.[5]
RDOS was superseded in the early 1980s by Data General's AOS family of operating systems, including AOS/VS and MP/AOS (MP/OS on smaller systems).
References
- ^ OS History - Data General Archived February 20, 2009, at the Wayback Machine
- ^ Computer Law Reporter. Computer Law Reporter Incorporated. 1986.
- ^ Sidney W. Frost; James C. Dunlap (1983). Automated law office systems: a survey of today's tools and techniques. West Pub. Co.
- ^ IDG Enterprise (9 July 1975). Computerworld. IDG Enterprise. pp. 18–. ISSN 00104841 Parameter error in {{issn}}: Invalid ISSN..
- ^ Trade Cases. Commerce Clearing House. 1987.