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IBM 8100 DPCX
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{{Refimprove|date=December 2009}} {{Infobox OS | name = Distributed Processing Control eXecutive (DPCX)<!-- Name of program or distribution --> | logo = <!-- filename only (no wikilink, no Image:/File:) --> | logo caption = | logo size = | logo alt = | screenshot = <!-- filename only (no wikilink, no Image:/File:) --> | caption = | screenshot_size = | screenshot_alt = | collapsible = | version of = <!-- For articles about releases of operating systems ONLY --> | developer = [[IBM]]<!-- Name of main developer or sponsor--> | family = <!-- "Unix-like" or "Microsoft Windows" --> | working state = Discontinued<!-- "Current", "Discontinued" (operating systems), or "No longer supported" (releases) --> | source model = <!-- "Open source", "Closed source", or "Shared source" --> | released = | discontinued = <!-- DON'T use this for articles about releases of operating systems --> | RTM date = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases --> | GA date = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} ONLY for articles about OS releases --> | latest release version = | latest release date = | latest preview version = | latest preview date = <!-- {{Start date and age|YYYY|MM|DD|df=yes/no}} --> | marketing target = | programmed in = [[IBM PL/S|PL/S]]-like PL/DS language | language = [[English language|English]]<!-- Supported human languages (English, French, Italian, Arabic, ...) --> | update model = <!-- APT, Windows Update, etc. --> | package manager = <!-- dpkg, rpm, Windows installer, etc. --> | supported platforms = [[IBM 8100]]<!-- IA-32, x64, Itanium, ARM, etc. --> | kernel type = <!-- Hybrid, Monolithic, Microkernel, Exokernel, Nanokernel, etc. --> | userland = | ui = | license = [[Proprietary software|Proprietary]] | preceded by = | succeeded by = | website = <!-- {{URL|www.example.org}} --> | support status = <!-- For articles about releases of operating systems ONLY --> | other articles = | prog_language = }} <!-- Image with disputed fair-use status removed: [[Image:IBM_logo.svg|thumb|128px|IBM logo]] --> '''DPCX''' ('''Distributed Processing Control eXecutive''') was an [[operating system]] for the [[IBM 8100]] small computer system.<ref>{{Cite journal|last=Tanton|first=Theresa T.|date=30 Jul 1979|title=Choice involves many factors: IBM 8100 and 4300 aimed at different users|url=https://books.google.com/books?id=erK4_MHuqP8C&pg=RA1-PA32|journal=Computerworld|volume=13|issue=31|pages=Special Report/10}}</ref><ref>{{Cite journal|last=Henkel|first=Tom|date=3 Mar 1980|title=For distributed operation: missing links plaguing IBM's 8100 system|url=https://books.google.com/books?id=6xo2WButCyEC&pg=PA5|journal=Computerworld|volume=14|issue=9|pages=5}}</ref> [[IBM]] hoped it would help their installed base of [[IBM 3790]] customers migrate to the 8100 and the [[IBM DPPX|DPPX]] operating system.<ref>{{Cite journal|last=Waters|first=F. C. H.|date=1979|title=Design of the IBM 8100 Data Base and Transaction Management System—DTMS|url=https://ieeexplore.ieee.org/document/5387974|journal=IBM Systems Journal|volume=18|issue=4|pages=565–581|doi=10.1147/sj.184.0565|issn=0018-8670|url-access=subscription}}</ref> It was mainly deployed to support a [[word processing]] system, ''Distributed Office Support Facility'' (DOSF) which was derived from the earlier [[IBM 3790#IBM 3730|IBM 3730]] word processing system. Like DPPX, it was written in the [[IBM PL/S|PL/S]]-like PL/DS language. The applications, including much of DOSF, however, were written an interpreted language that was "compiled" using the [[System/370]] assembler macro facility. The 8100/DPCX/DOSF system was the first type of distributed system to connect to the [[Disoss|IBM Distributed Office Support System (DISOSS)]] running on data host.<ref>IBM Red Book DISOSS</ref> Later versions of DISOSS relied on SNA Distribution System ([[SNADS]]) and eventually became [[peer-to-peer]] communication of documents which complied with [[Document Interchange Architecture]] (DIA) and [[Document Content Architecture]] (DCA) as other types of distributed system gained DISOSS support – [[Scanmaster]], [[IBM Displaywriter System|Displaywriter]], and [[IBM 5520|5520]] Office System.
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