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INT 31 P - DPMI 0.9+ - GET AND DISABLE VIRTUAL INTERRUPT STATE
AX = 0900h
Return: CF clear
virtual interrupts disabled
AL = 00h if previously disabled
= 01h if previously enabled
AH preserved
Notes: the previous state may be restored simply by executing another INT 31
a CLI instruction may be used if the previous state is unimportant,
but should be assumed to be very slow due to trapping by the host
SeeAlso: AX=0902h
See Also:
310901
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