Article ID: 102611
Article Last Modified on 10/31/2006
APPLIES TO
- Microsoft Windows NT Advanced Server 3.1
- Microsoft Windows NT Workstation 3.1
- Microsoft Windows NT Advanced Server 3.1
This article was previously published under Q102611
SUMMARY
Windows NT virtual DOS machines (VDMs) keep their own system time. Each time an MS-DOS-based application or a 16-bit Windows-based application is started, its BiosDataArea tick count is initialized to the current system time. When an MS-DOS-based application sets the time in a VDM, it is reflected in that VDM only. When a 16-bit Windows-based application changes the time, the new time is reflected in all 16-bit Windows-based applications running in Windows on Windows (WOW).
MORE INFORMATION
Windows NT is designed this way because MS-DOS-based applications depend on timer tic hardware for their sense of time. Many MS-DOS-based applications do not interact favorably with the timer tic hardware.
Additional query words: prodnt
Keywords: kbother KB102611
