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  2. Memory paging - Wikipedia

    en.wikipedia.org/wiki/Memory_paging

    Subsequent early machines, and their operating systems, supporting paging include the IBM M44/44X and its MOS operating system (1964), [6] the SDS 940 [7] and the Berkeley Timesharing System (1966), a modified IBM System/360 Model 40 and the CP-40 operating system (1967), the IBM System/360 Model 67 and operating systems such as TSS/360 and CP ...

  3. Demand paging - Wikipedia

    en.wikipedia.org/wiki/Demand_paging

    In computer operating systems, demand paging (as opposed to anticipatory paging) is a method of virtual memory management. In a system that uses demand paging, the operating system copies a disk page into physical memory only when an attempt is made to access it and that page is not already in memory (i.e., if a page fault occurs).

  4. Intel 5-level paging - Wikipedia

    en.wikipedia.org/wiki/Intel_5-level_paging

    Intel 5-level paging, referred to simply as 5-level paging in Intel documents, is a processor extension for the x86-64 line of processors. [ 1 ] : 11 It extends the size of virtual addresses from 48 bits to 57 bits by adding an additional level to x86-64's multilevel page tables , increasing the addressable virtual memory from 256 TiB to 128 PiB .

  5. Page (computer memory) - Wikipedia

    en.wikipedia.org/wiki/Page_(computer_memory)

    Similarly, a page frame is the smallest fixed-length contiguous block of physical memory into which memory pages are mapped by the operating system. [ 1 ] [ 2 ] [ 3 ] A transfer of pages between main memory and an auxiliary store, such as a hard disk drive , is referred to as paging or swapping.

  6. Memory management unit - Wikipedia

    en.wikipedia.org/wiki/Memory_management_unit

    A 68451 MMU, which could be used with the Motorola 68010. A memory management unit (MMU), sometimes called paged memory management unit (PMMU), [1] is a computer hardware unit that examines all memory references on the memory bus, translating these requests, known as virtual memory addresses, into physical addresses in main memory.

  7. IBM System/360 Model 67 - Wikipedia

    en.wikipedia.org/wiki/IBM_System/360_Model_67

    IBM's failure to deliver TSS/360 as promised opened the door for others to develop operating systems that would use the unique features of the S/360-67 MTS, the Michigan Terminal System, was the time-sharing operating system developed at the University of Michigan and first used on the Model 67 in January 1967. Virtual memory support was added ...

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    mail.aol.com

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  9. Control register - Wikipedia

    en.wikipedia.org/wiki/Control_register

    When IBM developed a paging version [note 1] of the System/360, they added 16 control registers [2] [3] to the design for what became the 360/67. IBM did not provide control registers on other S/360 models, but made them a standard part [ 4 ] of System/370 , although with different register and bit assignments.