Int 21/AX=F1E9h

VIRUS - Tremor - INSTALLATION CHECK

AX = F1E9h

Return:
AX = installation state
CADEh installed, and calling program is infected
F100h not installed (normal DOS return value)
else  installed, but calling program is not infected

See Also: AH=F1h"VIRUS" - AX=F2AAh

Category: Viruses - Int 21h - V

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