IBM DPPX
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ibm operating system "Distributed Processing Programming Executive" for IBM 8100 computer. released with IBM 8100 in 1978. also used as os for its 1983 successor the IBM 8150.
1987 saw release of DPPX/SP "Distributed Processing Progamming Executive System Product" Release 4.
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).
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