lim ems การใช้

• Released in 1987, the LIM EMS 4.0 specification incorporated practically all features of EEMS.
• In October 1989, Helix Software released HeadRoom v2.0 which included support for Microsoft Windows and LIM EMS v4.0.
• A new feature added in LIM EMS 4.0 was that EMS boards could have multiple sets of page mapping registers ( up to 64 sets ).
• DESQview was able to use QEMM's features far beyond just the LIM EMS API, mapping most of the " conventional " address space ( below 640 kB ) into multiple extended memory blocks such that each could execute transparently during its context.
• The most widely used variant was the "'Expanded Memory Specification "'( "'EMS "'), which was developed jointly by Lotus Software, Intel, and Microsoft, so that this specification was sometimes referred to as " "'LIM EMS "'. " LIM EMS had several versions.
• The most widely used variant was the "'Expanded Memory Specification "'( "'EMS "'), which was developed jointly by Lotus Software, Intel, and Microsoft, so that this specification was sometimes referred to as " "'LIM EMS "'. " LIM EMS had several versions.
• In 1985 the companies Lotus and Intel introduced Expanded Memory Specification ( EMS ) 3.0 for use in IBM PC compatible computers running MS-DOS . Microsoft joined for versions 3.2 in 1986 and 4.0 in 1987 and the specification became known as Lotus-Intel-Microsoft EMS or LIM EMS . It is a form of bank switching technique that allows more than the 640 KB of RAM defined by the original IBM PC architecture, by letting it appear piecewise in a 64 KB " window " located in the Upper Memory Area.
• The first widely implemented version was EMS 3.2, which supported up to 8 MB of expanded memory and uses parts of the address space normally dedicated to communication with peripherals ( upper memory ) to map portions of the expanded memory . "'EEMS "', an expanded memory management standard competing with LIM EMS 3 . x, was developed by AST Research, Quadram and Ashton-Tate; it could map any area of the lower 1 MB . EEMS ultimately was incorporated in LIM EMS 4.0, which supported up to 32 MB of expanded memory and provided some support for DOS multitasking as well.
• The first widely implemented version was EMS 3.2, which supported up to 8 MB of expanded memory and uses parts of the address space normally dedicated to communication with peripherals ( upper memory ) to map portions of the expanded memory . "'EEMS "', an expanded memory management standard competing with LIM EMS 3 . x, was developed by AST Research, Quadram and Ashton-Tate; it could map any area of the lower 1 MB . EEMS ultimately was incorporated in LIM EMS 4.0, which supported up to 32 MB of expanded memory and provided some support for DOS multitasking as well.