Category: <b>virus/antivirus</b>
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<pre><b>INT 21 - VIRUS - "600" or "Voronezh"-family - INSTALLATION CHECK</b>

	AH = ABh
Return: AX = 5555h if resident
SeeAlso: AX=AA03h,AX=ABCDh,AX=BBBBh"VIRUS"
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