The 3B20D Processor & DMERT operating system: DMERT operating system

@article{Grzelakowski1983The3P,
  title={The 3B20D Processor \& DMERT operating system: DMERT operating system},
  author={M. E. Grzelakowski and J. H. Campbell and M. R. Dubman},
  journal={The Bell System Technical Journal},
  year={1983},
  volume={62},
  pages={303-322}
}
General operating system services in Duplex Multiple Environment Real Time (DMERT) are provided by a kernel and a set of cooperating processes. These services support a multitude of process-oriented features that include a rich set of interprocess communication mechanisms and a sophisticated collection of memory manipulation primitives. The operating system provides processes with two scheduling alternatives and various creation and termination options. The cooperating processes include input… 
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References

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The 3B20D Processor & DMERT operating system: Overview, architecture and performance of DMERT
TLDR
A process-oriented operating system was designed for the 3B20D Processor and offers both real-time and time-shared operation, with emphasis on high availability.
The 3B20D Processor & DMERT operating system: Field administration subsystems
TLDR
The field administration facilities of the DMERT operating system, as provided on the 3B20D Processor are described, which include Recent Change/Verify, the subsystem that allows manipulation of office-dependent configuration information; Field Update, the software change mechanism; and System update, the component used to install a new generic program in an office.
The 3B20D Processor & DMERT operating system: 3B20D file memory systems
The 3B20D file memory system employs microprocessor-based intelligent Disk File Controllers (DFC), each supporting a complement of one to eight 300-megabyte disk drives. The DFC communicates with the
The 3B20D Processor & DMERT operating system: 3B20D Processor memory systems
The memory system supplied with the 3B20D Processor provides a high-reliability, high-performance, main-frame memory for use by the 3B20D Central Control and Input/Output system. The memory system is
The UNIX time-sharing system
TLDR
The usage and implementation of the file system and of the user command interface are discussed and the ability to initiate asynchronous processes is discussed.
The 3B20D Processor & DMERT operating system: 3B20D Input/Output System
TLDR
The 3B20D Input/Output system supports a large number of peripheral devices of various types, which include slow- and medium-speed tape drives, low- and high-speed data links, medium to very-high-speed printers, and scanner and signal distributor circuits.
The 3B20D Processor & DMERT operating system: Software development system
TLDR
The tools and procedures used in developing the 3B20D Processor software include compilers, assemblers, and loaders, as well as change-administration and load-building procedures.