RSX-11
| RSX-11 | |
|---|---|
 SHOW MEMORY |
|
| developer | Digital Equipment Corporation |
| License (s) | proprietary |
| Current version | RSX-11M-Plus V4.6 Micro / RSX V4.6 RSX-11M V4.8 RSX-11S V4.8 (1972) |
| ancestry | RSX-15 (1970) |
| Architecture (s) | PDP-11 |
| timeline | RSX-11 / D (1972) |
RSX-11 is a family of real-time operating systems , mainly for the PDP-11 - computer company Digital Equipment Corporation (DEC), which were very common in the late 1970s and early 1980s.
RSX represents R esource S haring E X ecutive, 11 refers to PDP 11 . Resource Sharing Executive means roughly the execution unit for the common use of resources .
The predecessor developed by Dennis J. Brevik had a higher version number - the system was called RSX-15 (originally DEX-15 for Digital's EXecutive for the PDP-15) and appeared in 1970. Developed primarily as a process computer , the RSX family was also very popular for program development and technical and scientific calculations.
The RSX-11 existed in different versions:
- RSX-11 / D - the original from 1972, used as the operating system of the PDP-11 and also as a boot computer for the large DECsystem10 and DECsystem20.
- RSX-11M - a multi-user system, common to all PDP-11 systems.
- RSX-11M-Plus - a greatly expanded version of RSX-11M, originally developed to support the PDP-11/74 multiprocessor machine, a system that was never shipped. RSX-11M-Plus was widely used as the standard operating system for the PDP-11/70. For the first time it contained the DCL ( Digital Command Language ).
- RSX-11-S - a memory-resident version used in real-time applications.
- Micro / RSX - a reduced version, implemented especially for the Micro PDP-11 , an inexpensive multi-user system in a box, easy to install, no operating system generation and specially prepared documentation.
David N. Cutler was the chief developer of all of these systems. Principles first implemented in RSX-11 were later continued in DEC's VMS and Microsoft's Windows NT .
"RSX was a separate path at DEC and the progenitor more than anything of VMS that went to NT via Dave Cutler."