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The DPPX Mainframe Resource – Directory & Links
From Mainframes.in – Home of Legacy & Mainframes Online
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The DPPX Mainframe section of Mainframes.in provides a listing of WWW resources for DPPX mainframe systems. Mainframes.in is a comprehensive online resource for legacy and mainframe systems.
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Content derived from the Wikipedia article on IBM 8100 DPPX
IBM 8100 DPPX From Wikipedia, the free encyclopedia
Distributed Processing Programming Executive was an operating system introduced by IBM, pre-installed on selected computer models in the 80s.
Brief history It was first introduced on the IBM 8100 model, which was released in 1978. It is also adopted as the operating system for its successor model, the IBM 8150 in 1983. 1987 saw the release of Distributed Processing Programming Executive System Product Release 4, also known as DPPX/SP. In 1986, IBM decided to cease the IBM 8100 architecture to consolidate its hardware and software families. In 1988, they released DPPX/370 which ran on the ES/9370 processors (an S/370 model). By the end of June 1997, DPPX/370 was officially retired.
Architecture DPPX was written in PL/DS, an PL/I-derived systems programming language, similar to the PL/S systems programming language used for MVS and VM. Part of the DPPX/370 development process was developing a PL/DS 2 language, which was based on PL/DS, but with changes necessitated by the changed instruction set. (PL/DS, like PL/S, is a high-level language which encourages significant use of inline assembly.)
External link Feasibility and Overview of DPPX Retrieved from http://en.wikipedia.org/wiki/IBM_8100_DPPX
End of Wikipedia content, http://en.wikipedia.org/wiki/DPPX
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