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QEMM
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====Memory limit==== * QEMM 5.0 can manage up to 16 MB EMS, 16 MB XMS. * QEMM 6.0 can manage up to 64 MB EMS, 64 MB XMS. * QEMM 6.02 can manage up to 128 MB EMS, 128 MB XMS. EMBMEM (16-bit) parameter limit was removed. * QEMM 7.0-7.03 can manage up to 128 MB EMS, 128 MB XMS. * QEMM 7.04, 7.5, 8.0-8.3 and 97 (aka QEMM 9.0) can manage up to 256 MB EMS/XMS. By default, QEMM 7.04 and above provide up to a total of 64 MB RAM shared among XMS, EMS and VCPI memory, unless the USERAM= parameter is used. For example, to allow access to up to 256 MB EMS (or 256 MB XMS), specify: QEMM386.SYS USERAM=1M-256M <ref>[http://www.delorie.com/djgpp/v2faq/faq3_10.html 3.10 How to get the most RAM for DJGPP programs?]</ref> For QEMM 7.04 and above, the maximum addressable RAM is 256 MB of memory, shared among XMS, EMS and VCPI memory. Initially, XMS allocates the entire 256 MB and shares it with EMS and VCPI as needed, that is, as EMS and VCPI request memory blocks, XMS free memory is reduced by that same amount.<ref>[http://www.computing.net/answers/dos/qemm-problem/16804.html QEMM Problem] {{webarchive|url=https://web.archive.org/web/20090511001053/http://www.computing.net/answers/dos/qemm-problem/16804.html |date=2009-05-11 }}</ref>
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