Memory Available to MS-DOS Applications with Windows NT (93499)


The information in this article applies to:

  • Microsoft Windows NT Server 3.1
  • Microsoft Windows NT Workstation 3.1
This article was previously published under Q93499

SUMMARY

This article describes the amount and type of memory available to MS-DOS-based applications running under Windows NT.

MORE INFORMATION

There is approximately 620K of conventional memory available at all times to MS-DOS-based applications. Device drivers do not impact MS-DOS memory in the same way they did with OS/2 1.x (with the exception of small stubs that map through to the underlying Win32/NT subsystem).

The memory for MS-DOS applications comes from the Windows NT virtual page pool. There is practically no limit; however, there is the typical size-versus-speed tradeoff associated with virtual storage. This memory is user-selectable: either EMS (LIM 4.0), XMS (provided by MS-DOS 5 HIMEM.SYS), or DPMI version 0.9.
Modification Type:MajorLast Reviewed:10/29/2003
Keywords:KB93499
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