Extended Memory Jesse Russell

ISBN: 9785510827224

Published: April 29th 2012

Paperback

140 pages


Description

Extended Memory  by  Jesse Russell

Extended Memory by Jesse Russell
April 29th 2012 | Paperback | PDF, EPUB, FB2, DjVu, audiobook, mp3, ZIP | 140 pages | ISBN: 9785510827224 | 5.31 Mb

High Quality Content by WIKIPEDIA articles! In DOS memory management, extended memory refers to memory above the first megabyte of address space in an IBM PC or compatible with an 80286 or later processor. The term is mainly used under the DOS andMoreHigh Quality Content by WIKIPEDIA articles! In DOS memory management, extended memory refers to memory above the first megabyte of address space in an IBM PC or compatible with an 80286 or later processor. The term is mainly used under the DOS and Windows operating systems. DOS programs, running in real mode or virtual x86 mode, cannot directly access this memory, but are able to do so through an application programming interface called the eXtended Memory Specification (XMS).

This API is implemented by a driver (such as HIMEM.SYS) or the operating system, which takes care of memory management and copying memory between conventional and extended memory, by temporarily switching the processor into protected mode. In this context the term extended memory may refer to either the whole of the extended memory or only the portion available through this API.



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