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  2. Extended memory - Wikipedia

    en.wikipedia.org/wiki/Extended_memory

    Extended memory is located above 1 MB, includes the high memory area, and ends at 16 MB on the Intel 286 and at 4 GB on the Intel 386DX and later. In DOS memory management, extended memory refers to memory above the first megabyte (2 20 bytes) of address space in an IBM PC or compatible with an 80286 or later processor.

  3. Expanded memory - Wikipedia

    en.wikipedia.org/wiki/Expanded_memory

    In DOS memory management, expanded memory is a system of bank switching that provided additional memory to DOS programs beyond the limit of conventional memory (640 KiB). Expanded memory is an umbrella term for several incompatible technology variants.

  4. DOS memory management - Wikipedia

    en.wikipedia.org/wiki/DOS_memory_management

    Expanded memory managers such as Quarterdeck's QEMM product and Microsoft's EMM386 supported the expanded memory standard without requirement for special memory boards. On 386 and subsequent processors, memory managers like QEMM might move the bulk of the code for a driver or TSR into extended memory and replace it with a small fingerhold that ...

  5. EMM386 - Wikipedia

    en.wikipedia.org/wiki/EMM386

    EMM386 is the expanded memory manager of Microsoft's MS-DOS, IBM's PC DOS, Digital Research's DR-DOS, and Datalight's ROM-DOS [1] which is used to create expanded memory using extended memory on Intel 80386 CPUs. There also is an EMM386.EXE available in FreeDOS. [2]

  6. Upper memory area - Wikipedia

    en.wikipedia.org/wiki/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. IBM reserved the uppermost 384 KB of the 8088 CPU 's 1024 KB address space for BIOS ROM , Video BIOS , Option ROMs , video RAM, RAM on peripherals, memory-mapped I/O , and obsoleted ROM ...

  7. Category:Memory expansion - Wikipedia

    en.wikipedia.org/wiki/Category:Memory_expansion

    Various schemes which increased the addressable memory space of older computer architectures (such as x86). Pages in category "Memory expansion" The following 14 pages are in this category, out of 14 total.

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    The search engine that helps you find exactly what you're looking for. Find the most relevant information, video, images, and answers from all across the Web.

  9. RAM limit - Wikipedia

    en.wikipedia.org/wiki/RAM_limit

    Memory above the 1 MB limit was called extended memory. However the area between 640 KB and 1 MB was reserved for hardware addressing in IBM PC compatibles. DOS and other real mode programs, limited to 20-bit addresses, could only access this space through EMS emulation on the extended memory, or an EMS analog for extended memory.