EXPANDED MEMORY SPECIFICATION
\ɛkspˈandɪd mˈɛməɹˌi spˌɛsɪfɪkˈe͡ɪʃən], \ɛkspˈandɪd mˈɛməɹˌi spˌɛsɪfɪkˈeɪʃən], \ɛ_k_s_p_ˈa_n_d_ɪ_d m_ˈɛ_m_ə_ɹ_ˌi s_p_ˌɛ_s_ɪ_f_ɪ_k_ˈeɪ_ʃ_ə_n]\
Sort: Oldest first
-
(EMS) An IBM PC memory paging scheme enablingaccess to memory other than conventional memory in realmode.Expanded memory is provided through a page frame of atleast 64 kilobytes in the reserved memory address region.Access to this memory is provided by an expanded memorymanager (EMM) software. The EMM functions are accessiblethrough interrupt 67H.In 8086 or 8088 based systems this is the only way to usememory beyond conventional memory. In systems based on80286 or later, XMS and HMA provide alternative methods.EMS was developed jointly by Lotus, Intel, and Microsoftprior to 1988. Accordingly, this specification is sometimesreferred to as LIM EMS.A complete discussion of EMS and programming examples can befound in ["PC System Programming for developers", 1989, ISBN1-55755-035-2 (Book only) and ISBN 1-55755-036-0 (Book anddiskette)].EEMS, a competing expanded memory management standard, wasdeveloped by AST Research, Quadram and Ashton-Tate.See also upper memory block.
By Denis Howe
Word of the day
hydromorphic
- [Greek] Structurally adapted to an aquatic environment, as organs of water plants.
Nearby Words
- expandable
- expanded
- expanded memory
- expanded memory manager
- expanded memory page frame
- Expanded Memory Specification
- expanded ptfe
- expander
- expandible
- expanding
- expanding upon