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MVS
Multiple Virtual Storage, more commonly called MVS, was the most commonly used operating system on the System/370
System/370
and System/390
System/390
IBM mainframe computers. It was developed by IBM, but is unrelated to IBM's other mainframe operating systems, e.g., VSE, VM, TPF. First released in 1974, MVS was extended by program products with new names multiple times:first to MVS/SE (MVS/System Extensions),[NB 1] next to MVS/SP (MVS/System Product) Version 1, next to MVS/XA (MVS/eXtended Architecture), next to MVS/ESA (MVS/Enterprise Systems Architecture), then to OS/390 and finally to z/OS (when 64-bit support was added with the zSeries models)
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ZSeries
IBM
IBM
Z[1] is a family name used by IBM
IBM
for all of its mainframe computers from the Z900 on
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IBM Mainframes
Mainframe computers (colloquially referred to as "big iron"[1]) are computers used primarily by large organizations for critical applications; bulk data processing, such as census, industry and consumer statistics, enterprise resource planning; and transaction processing. They are larger and have more processing power than some other classes of computers: minicomputers, servers, workstations, and personal computers. The term originally referred to the large cabinets called "main frames" that housed the central processing unit and main memory of early computers.[2][3] Later, the term was used to distinguish high-end commercial machines from less powerful units.[4] Most large-scale computer system architectures were established in the 1960s, but continue to evolve
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Unix-like
A Unix-like
Unix-like
(sometimes referred to as UN*X or *nix) operating system is one that behaves in a manner similar to a Unix
Unix
system, while not necessarily conforming to or being certified to any version of the Single UNIX
UNIX
Specification. A Unix-like
Unix-like
application is one that behaves like the corresponding Unix
Unix
command or shell
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Unix
Unix
Unix
(/ˈjuːnɪks/; trademarked as UNIX) is a family of multitasking, multiuser computer operating systems that derive from the original AT&T Unix, development starting in the 1970s at the Bell Labs research center by Ken Thompson, Dennis Ritchie, and others.[3] Initially intended for use inside the Bell System, AT&T licensed Unix
Unix
to outside parties in the late 1970s, leading to a variety of both academic and commercial Unix
Unix
variants from vendors like the University of California, Berkeley
University of California, Berkeley
(BSD), Microsoft
Microsoft
(Xenix), IBM (AIX), and Sun Microsystems
Sun Microsystems
(Solaris)
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OpenSolaris For System Z
OpenSolaris
OpenSolaris
for System z is a discontinued[1] port of the OpenSolaris operating system to the IBM System z
IBM System z
line of mainframe computers.Contents1 History 2 See also 3 References 4 External linksHistory[edit] OpenSolaris
OpenSolaris
is based on Solaris, which was originally released by Sun in 1991. Sun Microsystems released the bulk of the Solaris system source code in OpenSolaris
OpenSolaris
on 14 June 2005, which made it possible for developers to create other OpenSolaris
OpenSolaris
distributions. Sine Nomine Associates began a project to bring OpenSolaris
OpenSolaris
to the IBM
IBM
mainframe in July, 2006.[2] The project was named Sirius (in analogy to the Polaris project to port OpenSolaris
OpenSolaris
to PowerPC)
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Amdahl UTS
UTS is a discontinued implementation of the UNIX
UNIX
operating system for IBM mainframe
IBM mainframe
(and compatible) computers. Amdahl created the first versions of UTS, and released it in May 1981,[1] with UTS Global acquiring rights to the product in 2002. UTS Global has since gone out of business.Contents1 System requirements 2 History 3 See also 4 References 5 External linksSystem requirements[edit] UTS Release 4.5 supports the following S/390 model processors and their successors:Amdahl 5990, 5995A, 5995M series of ECL processors Amdahl Millennium Global Server series of CMOS
CMOS
processors Fujitsu Global Server IBM ES/9000/9021 series of ECL processors IBM G4, G5 & G6 Servers (the 9672 R and X series of CMOS processors)History[edit] The UTS project had its origins in work started at Princeton University in 1975 to port UNIX
UNIX
to the IBM VM/370 system
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Operating System
An operating system (OS) is system software that manages computer hardware and software resources and provides common services for computer programs. Time-sharing
Time-sharing
operating systems schedule tasks for efficient use of the system and may also include accounting software for cost allocation of processor time, mass storage, printing, and other resources. For hardware functions such as input and output and memory allocation, the operating system acts as an intermediary between programs and the computer hardware,[1][2] although the application code is usually executed directly by the hardware and frequently makes system calls to an OS function or is interrupted by it
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64-bit Computing
In computer architecture, 6 4-bit
4-bit
computing is the use of processors that have datapath widths, integer size, and memory address widths of 64 bits (eight octets). Also, 6 4-bit
4-bit
computer architectures for central processing units (CPUs) and arithmetic logic units (ALUs) are those that are based on processor registers, address buses, or data buses of that size. From the software perspective, 6 4-bit
4-bit
computing means the use of code with 6 4-bit
4-bit
virtual memory addresses
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CP-67
CP-67 was the control program portion of CP/CMS, a virtual machine operating system developed for the IBM System/360-67
IBM System/360-67
by IBM's Cambridge Scientific Center. It was a reimplementation of their earlier research system CP-40, which ran on a one-off customized S/360-40. CP-67 was later reimplemented (again) as CP-370, which IBM released as VM/370 in 1972, when virtual memory was added to the System/370
System/370
series
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IBM CP-40
CP-40 was a research precursor to CP-67, which in turn was part of IBM's then-revolutionary CP[-67]/CMS – a virtual machine/virtual memory time-sharing operating system for the IBM System/360
IBM System/360
Model 67, and the parent of IBM's VM family. CP-40 ran multiple instances of client operating systems – particularly CMS, the Cambridge Monitor System,[1] built as part of the same effort. Like CP-67, CP-40 and the first version of CMS were developed by IBM's Cambridge Scientific Center (CSC) staff, working closely with MIT researchers at Project MAC and Lincoln Laboratory. CP-40/CMS production use began in January 1967. CP-40 ran on a unique, specially modified IBM System/360
IBM System/360
Model 40.Contents1 Project goals 2 Features 3 Hardware platform 4 CMS under CP-40 5 Historical notes 6 See also 7 References7.1 Bibliography8 Family treeProject goals[edit] CP-40 was a one-off research system
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IBM
IBM
IBM
(International Business
Business
Machines Corporation) is an American multinational technology company headquartered in Armonk, New York, United States, with operations in over 170 countries. The company originated in 1911 as the Computing-Tabulating-Recording Company
Computing-Tabulating-Recording Company
(CTR) and was renamed "International Business
Business
Machines" in 1924. IBM
IBM
manufactures and markets computer hardware, middleware and software, and provides hosting and consulting services in areas ranging from mainframe computers to nanotechnology. IBM
IBM
is also a major research organization, holding the record for most U.S
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VP/CSS
VP/CSS was a time-sharing operating system developed by National CSS. It began life in 1968 as a copy of IBM's CP/CMS, which at the time was distributed to IBM
IBM
customers at no charge, in source code form, without support, as part of the IBM
IBM
Type-III Library. Through extensive in-house development, in what today would be termed a software fork, National CSS took VP/CSS in a different direction from CP/CMS. Although the two systems would eventually share many capabilities, their technical implementations diverged in substantive ways. VP/CSS ran on IBM
IBM
and IBM
IBM
plug compatible hardware owned by NCSS (and by a few customers with site licenses, including Bank of America
Bank of America
and Standard Oil of California)
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Airlines Control Program
IBM
IBM
Airline
Airline
Control Program, or ACP, is a discontinued operating system developed by IBM
IBM
beginning about 1965. In contrast to previous airline transaction processing systems, the most notable aspect of ACP is that it was designed to run on most models of the IBM
IBM
System/360 mainframe computer family. This departed from the earlier model in which each airline had a different, machine-specific transaction system. Development began with SABRE (Semi-Automatic Business Research Environment), Deltamatic, and PANAMAC. From these Programmed Airline Reservations System (PARS) was developed
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History Of CP/CMS
This article covers the History of CP/CMS — the historical context in which this important IBM time-sharing virtual machine operating system was built. It provides details to support the main CP/CMS and History of IBM
History of IBM
articles, drawing on source material that is not readily available on-line. CP/CMS development occurred in a complex political and technical milieu. To understand the system's history, it is necessary to examine these broader forces. The following material summarizes major issues and events of the day from the perspective of CP/CMS development – a perspective that is somewhat different from (and orthogonal to) other ways of viewing the period
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OS/390
OS/390 is an IBM operating system for the System/390
System/390
IBM mainframe computers. OS/390 was introduced in late 1995 in an effort, led by the late Randy Stelman, to simplify the packaging and ordering for the key, entitled elements needed to complete a fully functional MVS operating system package
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