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2. Support programs for OS/360 and successors - Wikipedia

   en.wikipedia.org/wiki/Support_programs_for_OS/...

   Sort/merge is important enough that there are multiple companies each selling their own sort/merge package for IBM mainframes. IBM's original OS/360 sort/merge program, 360S-SM-023, program name IERRCO00 (alias SORT), supported only IBM's first-generation direct-access storage devices (DASD) [d] and tapes (2400). Support for second-generation ...

3. IBM Basic assembly language and successors - Wikipedia

   en.wikipedia.org/wiki/IBM_Basic_assembly...

   The application program interfaces of IBM's mainframe operating systems is defined as a set of assembly language "macro" instructions, that typically invoke Supervisor Call (SVC) [e.g., on z/OS] or Diagnose (DIAG) [on, e.g., z/VM] instructions to invoke operating system routines. It is possible to use operating system services from programs ...

4. IBM mainframe - Wikipedia

   en.wikipedia.org/wiki/IBM_mainframe

   The primary operating systems in use on current IBM mainframes include z/OS (which followed MVS/ESA and OS/390 in the OS/360 lineage), z/VM (which followed VM/ESA and VM/XA SP in the CP-40 lineage), z/VSE (which is in the DOS/360 lineage), z/TPF (a successor of Transaction Processing Facility in the Airlines Control Program lineage), and Linux ...

5. Job Control Language - Wikipedia

   en.wikipedia.org/wiki/Job_Control_Language

   Job Control Language (JCL) is a scripting language used on IBM mainframe operating systems to instruct the system on how to run a batch job or start a subsystem. [1] The purpose of JCL is to say which programs to run, using which files or devices [2] for input or output, and at times to also indicate under what conditions to skip a step.

6. VSE (operating system) - Wikipedia

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

   VSE n (Virtual Storage Extended) is an operating system for IBM mainframe computers, the latest one in the DOS/360 lineage, which originated in 1965.It is less common than z/OS and is mostly used on smaller machines.

7. Mainframe computer - Wikipedia

   en.wikipedia.org/wiki/Mainframe_computer

   An IBM System z9 mainframe. A mainframe computer, informally called a mainframe or big iron, [1] is a computer used primarily by large organizations for critical applications like bulk data processing for tasks such as censuses, industry and consumer statistics, enterprise resource planning, and large-scale transaction processing.

8. IBM Z - Wikipedia

   en.wikipedia.org/wiki/IBM_Z

   A pair of IBM mainframes. On the left is the IBM z13 (while the naming was changed, the z13 line had a zSystems label on doors). On the right is the IBM LinuxONE Rockhopper. IBM Z [1] is a family name used by IBM for all of its z/Architecture mainframe computers.

9. History of IBM mainframe operating systems - Wikipedia

   en.wikipedia.org/wiki/History_of_IBM_mainframe...

   IBM mainframes run operating systems supplied by IBM and by third parties. The operating systems on early IBM mainframes have seldom been very innovative, except for TSS/360 and the virtual machine systems beginning with CP-67. But the company's well-known reputation for preferring proven technology has generally given potential users the ...