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2. Hercules (emulator) - Wikipedia

   en.wikipedia.org/wiki/Hercules_(emulator)

   Hercules is a computer emulator allowing software written for IBM mainframe computers (System/370, System/390, and zSeries/System z) and for plug compatible mainframes (such as Amdahl machines) to run on other types of computer hardware, notably on low-cost personal computers. Development started in 1999 by Roger Bowler, a mainframe systems ...

3. PC-based IBM mainframe-compatible systems - Wikipedia

   en.wikipedia.org/wiki/PC-based_IBM_mainframe...

   Since the rise of the personal computer in the 1980s, IBM and other vendors have created PC-based IBM mainframe-compatible systems which are compatible with the larger IBM mainframe computers. For a period of time PC-based mainframe-compatible systems had a lower price and did not require as much electricity or floor space.

4. MVS - Wikipedia

   en.wikipedia.org/wiki/MVS

   When IBM introduced its 64-bit z/Architecture mainframes in the year 2000, IBM also introduced the 64-bit z/OS operating system, the direct successor to OS/390 and MVS. Fujitsu and Hitachi opted not to license IBM's z/Architecture for their quasi-MVS operating systems and hardware systems, and so MSP and VOS3, while still nominally supported by ...

5. VM (operating system) - Wikipedia

   en.wikipedia.org/wiki/VM_(operating_system)

   However, IBM continued providing updates in source form for existing code for many years, although the upgrades to all but the free base required a license. As with CP-67, privileged instructions in a virtual machine cause a program interrupt, and CP simulated the behavior of the privileged instruction.

6. z/OS - Wikipedia

   en.wikipedia.org/wiki/Z/OS

   An IBM System Z10 mainframe computer on which z/OS can run. z/OS is a 64-bit operating system for IBM z/Architecture mainframes, introduced by IBM in October 2000. [2] It derives from and is the successor to OS/390, which in turn was preceded by a string of MVS versions.

7. Data Facility Storage Management Subsystem (MVS) - Wikipedia

   en.wikipedia.org/wiki/Data_Facility_Storage...

   IBM MVS/Data Facility Product (MVS/DFP) Version 3 Release 1.0; IBM Data Facility Data Set Services [c] (DFDSS) Version 2 Release 4.0; IBM Data Facility Hierarchical Storage Manager (DFHSM) Version 2 Release 4.0; IBM Resource Access Control Facility (RACF) Release 8.1; IBM Data Facility Sort (DFSORT) Release 10.0; In addition to replacing part ...

8. OS/360 and successors - Wikipedia

   en.wikipedia.org/wiki/OS/360_and_successors

   OS/360, officially known as IBM System/360 Operating System, [1] [2] is a discontinued batch processing operating system developed by IBM for their then-new System/360 mainframe computer, announced in 1964; it was influenced by the earlier IBSYS/IBJOB and Input/Output Control System (IOCS) packages for the IBM 7090/7094 [citation needed] and even more so by the PR155 Operating System for the ...

9. ORVYL and WYLBUR - Wikipedia

   en.wikipedia.org/wiki/ORVYL_and_WYLBUR

   ORVYL and WYLBUR were much admired as shown by this excerpt from a 2004 article titled "Computing at CERN: the mainframe era": [In 1976 the IBM S/370-168] also brought with it the MVS (Multiple Virtual Storage) operating system, with its pedantic Job Control Language, and it provided the opportunity for CERN to introduce WYLBUR, the well-loved ...