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 XMS (eXtended Memory Specification) Unit For TP 6.0   Yuval Tal 04.03.1991

Модуль для работы с XMS для Турбо Паскаль 6.0. Позволяет использовать в программе все функции спецификации. Работает как с HIMEM.SYS так и с QEMM.SYS.
Using the XMS Unit you are able to call all the XMS functions from Turbo Pascal without having to worry about assembly or anything else.



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XMS (eXtended Memory Specification) Unit For Turbo Pascal 6.0 Version 1.0 Written by Yuval Tal 04-Mar-91 This program may be freely distributed for non-commercial, non-business, and non-governmental uses, provided this notice is attached with it. My only request is that if you plan to use it regularly, let me know of know about it through e-mail or postal mail, so that I have an idea of how useful this program is (if you will add some cash to that letter it would be nice, ofcourse :-)). Also, if you have any problems, suggestions etc' please let me know. InterNet: nyyuval@weizmann.weizmann.ac.il or yuvalt@wisdocs.weizmann.ac.il Home address: 13 Glazer st. Rehovot, 76283 Israel Introduction ------------ The primitive method of accessing the extended memory is by using the AT's BIOS interrupt 15h. These methods have several weaknesses which I will not describe here. At 1988 Microsoft, Intel, AST Research and Lotus Corp. made a more sophisticated use of extended memory under MS-DOS - eXtended Memory Specification (XMS). The XMS defines software interface for 80286, 80386 and 80486 based PCs that allow real-mode application to use extended memory (EMB) and some areas of conventional memory which MS-DOS does not manage (UMB and HMA). Here is a figure which descirbes the memory: +-----------------+ 0K \ | | | | Base Memory | | | | | Conventional Memory | | | +-----------------+ 640K | | Upper