Int 21/AH=30h/DX=ABCDh

AH = 30h
DX = ABCDh

Return:
DX = DCBAh if installed

See Also: AX=0D20h - AH=30h/SI=1234h - AX=3000h"VIRUS" - AX=30F1h

Category: Viruses - Int 21h - V