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Operating system

Distributed Processing Control eXecutive (DPCX)
Developer	IBM
Written in	PL/S-like PL/DS language
Working state	Discontinued
Available in	English
Platforms	IBM 8100
License	Proprietary

DPCX (Distributed Processing Control eXecutive) was an operating system for the IBM 8100 small computer system. IBM hoped it would help their installed base of IBM 3790 customers migrate to the 8100 and the DPPX operating system. It was mainly deployed to support a word processing system, Distributed Office Support Facility (DOSF) which was derived from the earlier IBM 3730 word processing system.

Like DPPX, it was written in the 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 IBM Distributed Office Support System (DISOSS) running on data host. 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, Displaywriter, and 5520 Office System.

References

Tanton, Theresa T. (30 Jul 1979). "Choice involves many factors: IBM 8100 and 4300 aimed at different users". Computerworld. 13 (31): Special Report/10.
Henkel, Tom (3 Mar 1980). "For distributed operation: missing links plaguing IBM's 8100 system". Computerworld. 14 (9): 5.
Waters, F. C. H. (1979). "Design of the IBM 8100 Data Base and Transaction Management System—DTMS". IBM Systems Journal. 18 (4): 565–581. doi:10.1147/sj.184.0565. ISSN 0018-8670.
IBM Red Book DISOSS

v t e Operating systems by IBM
Supercomputer	INK CNK Red Hat Enterprise Linux
Server, mainframe	IBSYS BOS/360 TOS/360 TSS/360 RAX DOS/360 and successors VSE OS/360 and successors OS/VS1 SVS MVS OS/390 z/OS VM line ACP TPF CPF System/88 OS IBM i AIX zLinux DPCX DPPX SSP SRTOS Red Hat Enterprise Linux
Desktop, workstation	Textpack PC DOS DOS/V PC/IX AIX OS/2 AOS Red Hat Enterprise Linux
Point of sale	4680 OS 4690 OS
Projects	Taligent Workplace OS Monterey Trillian K42
Related	Fedora Linux
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