• Thumbnail for Upper memory area
    In DOS memory management, the upper memory area (UMA) is the memory between the addresses of 640 KB and 1024 KB (0xA0000–0xFFFFF) in an IBM PC or compatible...
    10 KB (1,414 words) - 23:54, 5 May 2025
  • Thumbnail for Conventional memory
    area. The remaining 384 KB beyond the conventional memory area, called the upper memory area (UMA), was reserved for system use and optional devices. UMA...
    26 KB (3,336 words) - 10:23, 4 July 2024
  • Thumbnail for Extended memory
    extended memory (SXMS). The extended memory manager is also responsible for managing allocations in the high memory area (HMA) and the upper memory area (UMA;...
    9 KB (1,148 words) - 01:35, 28 May 2025
  • Thumbnail for Expanded memory
    region in the upper 384 KiB (upper memory area) divided into four 16 KiB pages, which can be used to map portions of the expanded memory. Quadram, AST...
    18 KB (2,190 words) - 23:26, 25 May 2025
  • Thumbnail for High memory area
    In DOS memory management, the high memory area (HMA) is the RAM area consisting of the first 65520 bytes above the one megabyte in an IBM AT or compatible...
    26 KB (2,736 words) - 19:32, 31 May 2024
  • Thumbnail for DOS memory management
    physical memory in a machine could be organized as a combination of base or conventional memory (including lower memory), upper memory, high memory (not the...
    15 KB (2,204 words) - 18:06, 16 January 2025
  • conventional memory (the first 640 kilobytes of memory which was critical to DOS) by running in upper memory area (the 384 kilobytes of memory located beyond...
    4 KB (352 words) - 23:23, 23 May 2025
  • region between 640 and 1024 KB (64k segments 10 through 16) for the Upper Memory Area. This choice initially made little impact, but it eventually limited...
    17 KB (2,288 words) - 01:44, 18 November 2024
  • Thumbnail for IBM Personal Computer
     145–149. Retrieved April 13, 2025. "IBM 5150 - Memory Map of the 640 KB to 1 MB Area (the 'Upper Memory Area')". minuszerodegrees.net. Archived from the...
    61 KB (6,530 words) - 05:50, 15 April 2025
  • Thumbnail for BIOS
    "upper memory area" (the part of the x86 real-mode address space at and above address 0xA0000) and runs each ROM found, in order. To discover memory-mapped...
    89 KB (9,559 words) - 19:02, 5 May 2025
  • LOADHIGH (category DOS memory management)
    COMMAND.COM that is used to load a program into the upper memory area (UMA) instead of conventional memory. The command was introduced with MS-DOS 5.0 / PC DOS...
    8 KB (660 words) - 17:26, 15 October 2023
  • ULA—Uncommitted Logic Array ULSI—Ultra Large Scale Integration UMA—Upper Memory Area UMB—Upper Memory Block UML—Unified Modeling Language UML—User-Mode Linux UMPC—Ultra-Mobile...
    92 KB (6,587 words) - 14:00, 24 May 2025
  • the northern sky Uniform memory access, a shared memory architecture in parallel computers Upper memory area, in DOS memory management User-Managed Access...
    1 KB (202 words) - 20:49, 19 October 2024
  • closed lower, upper, and video memory access, to block the lower 64K of memory. A command that loads a program into the upper memory area. The command...
    45 KB (5,780 words) - 10:57, 21 May 2025
  • class LH (DOS command), a DOS command that loads a program into the upper memory area Luteinizing hormone, a hormone synthesized and secreted by gonadotropes...
    2 KB (341 words) - 08:39, 26 May 2025
  • Thumbnail for DOS
    from extended memory, access to the 65,520-byte high memory area directly above the first megabyte of memory and the upper memory block area. Generally XMS...
    56 KB (6,507 words) - 04:13, 20 May 2025
  • The Upper Highway Area is a suburban region situated west of Durban in KwaZulu-Natal, South Africa. The region forms part of the eThekwini Metropolitan...
    10 KB (889 words) - 22:18, 27 May 2025
  • Thumbnail for Memory
    to areas of the brain that are associated with memory storage, such as the hippocampus. Finally, the retrieval of information from long-term memory can...
    138 KB (16,929 words) - 15:37, 22 May 2025
  • QEMM provides access to the Upper Memory Area (UMA) and memory through the Expanded Memory Specification (EMS), Extended Memory Specification (XMS), Virtual...
    22 KB (3,171 words) - 14:52, 24 January 2025
  • Thumbnail for MS-DOS
    driver and load portions of the operating system into the upper memory area and high memory area. Supports up to four DOS primary partitions, however FDISK...
    92 KB (9,615 words) - 11:03, 23 May 2025
  • EMM386 (category DOS memory management)
    memory on Intel 80386 CPUs. There also is an EMM386.EXE available in FreeDOS. EMM386.EXE can map memory into unused blocks in the upper memory area (UMA)...
    9 KB (721 words) - 05:07, 5 February 2025
  • RAM limit (category Computer memory)
    operating system may only be designed to allocate a certain amount of memory, with upper address bits reserved to indicate designations such as I/O or supervisor...
    12 KB (1,742 words) - 15:02, 23 March 2025
  • in addition to its supporting the use of the Upper Memory Area – also permitted the use of Extended Memory for some of its buffers (reducing the driver's...
    18 KB (2,076 words) - 04:54, 2 October 2024
  • Minor Outlying Islands (postal symbol; ISO 3166 digram) UMA – (i) Upper Memory Area UMB – (i) University of Maryland, Baltimore UMBC – (i) University...
    20 KB (2,236 words) - 03:32, 14 April 2025
  • CEMM (category Expanded memory managers)
    Virtual 8086 mode Conventional memory Extended memory (XMS) Expanded memory (EMS) High Memory Area (HMA) Upper Memory Area (UMA) "Redirecting…". "Original...
    4 KB (425 words) - 03:47, 17 January 2022
  • Thumbnail for Bank switching
    Bank switching (category Computer memory)
    by letting it appear piecewise in a 64 KB "window" located in the Upper Memory Area. The 64 KB is divided into four 16 KB "pages" which can each be independently...
    19 KB (2,250 words) - 07:01, 27 May 2025
  • HIMEM.SYS (category DOS memory management)
    version 3.0. Conventional memory Extended memory High memory area Upper memory area EMM386 Memory management LOADALL "FreeDOS command: Himemx". "EMM386...
    4 KB (319 words) - 04:11, 6 December 2024
  • in addition to its supporting the use of the Upper Memory Area - also permitted the use of Extended Memory for some of its buffers (reducing the driver's...
    4 KB (398 words) - 03:37, 15 August 2020
  • of conventional memory by utilizing the memory virtualization features of i386 to remap the Upper memory area into the High memory area in addition to...
    8 KB (696 words) - 19:35, 10 February 2025
  • Thumbnail for Memory management unit
    maximum memory of the computer architecture, 32 or 64 bits. The MMU maps the addresses from each program into separate areas in physical memory, which...
    49 KB (7,099 words) - 18:50, 8 May 2025