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  2. Mainframe sort merge - Wikipedia

    en.wikipedia.org/wiki/Mainframe_sort_merge

    The Sort/Merge utility is a mainframe program to sort records in a file into a specified order, merge pre-sorted files into a sorted file, or copy selected records. Internally, these utilities use one or more of the standard sorting algorithms , often with proprietary fine-tuned code.

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

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

    The OS/360 sort program, IERRCO00, operates by dividing the input data into sections, sorting each section in main memory, and writing the sorted section to intermediate datasets on either direct-access storage devices (DASD) or magnetic tape. Final merge phases then merge the sections to produce the sorted output.

  4. Category:IBM mainframe operating systems - Wikipedia

    en.wikipedia.org/wiki/Category:IBM_mainframe...

    This list may not reflect recent changes. ... Mainframe sort merge; Support programs for OS/360 and successors; Michigan Terminal System; MTS system architecture;

  5. DOS/360 and successors - Wikipedia

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

    It added virtual memory in support of the new System/370 series hardware. It used a fixed page table which mapped a single address space of up to 16 megabytes for all partitions combined. DOS/VS increased the number of partitions (separate simultaneous programs) from three (named Background, Foreground 1 and Foreground 2) to five (BG and F1 ...

  6. RCA Spectra 70 - Wikipedia

    en.wikipedia.org/wiki/RCA_Spectra_70

    Software for this model did not include an operating system—the RCA 70/15 Programming System consisted of an "Assembly System, Loader Routines, Input-Output Control, Test Routines, Utility Routines, Communication Control, System Maintenance Routines, Report Program Generator, and Sort/Merge." Sort/Merge required a system with 8 KB of memory.

  7. IBM Machine Code Printer Control Characters - Wikipedia

    en.wikipedia.org/wiki/IBM_Machine_Code_Printer...

    Early mainframe printers were usually line printers. Line printers provide a limited set of commands to control how the paper is advanced when print lines are printed. The application writing reports, list, etc. to be printed has to include those commands in the print data. These single character print commands are called printer control ...

  8. IBM System/370 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/370

    The IBM System/370 (S/370) is a range of IBM mainframe computers announced as the successors to the System/360 family on June 30, 1970. The series mostly [b] maintains backward compatibility with the S/360, allowing an easy migration path for customers; this, plus improved performance, were the dominant themes of the product announcement.

  9. IBM System/36 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/36

    One of the machine's optional features was an off-line storage mechanism (on the 5360 model) that utilized "magazines" – boxes of 8-inch floppies that the machine could load and eject in a nonsequential fashion. The System/36 also had many mainframe features such as programmable job queues and scheduling priority levels.