Compatibility: Win 3.x

Expects: AX    1681H

Returns: none

Info: DOS programs (including TSRs and device drivers), when running

under Virtual-8086 mode (as when Enh386-Mode Windows is running)

can use this call to prevent a task-switch from occurring.

While in a critical section no other tasks, except hardware

interrupt handlers, are allowed to run.  Use INT 2fH 1682H (end

critical section) as soon as possible.

See Also: INT 2fH 16xxH: Enh386 Windows Services & Notifications

INT 2fH: Multiplex Interrupt

DOS Functions

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