Important Notice

The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.

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The Microsoft Windows Interrupt 2Fh services and notifications help Windows
device drivers and related MS-DOS device drivers and
terminate-and-stay-resident (TSR) programs manage their operations in the
multitasking environment of Windows. The services let drivers carry out
actions such as relinquishing the CPU time slice. The notifications let
drivers respond to events, such as starting up Windows, that Windows
broadcasts using Interrupt 2Fh.
 
Although the Interrupt 2Fh services and notifications are primarily
available under 386 enhanced-mode Windows version 3.x, some services are
also available in standard-mode Windows.
 
The following topics provide useful information about the Windows Interrupt
2Fh services and notifications:
 
◄About the Services and Notifications►
◄Windows Interrupt 2Fh Function Reference►
 
 
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