Category: <b>virus/antivirus</b>
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<pre><b>INT 21 - VIRUS - "New-Year" - INSTALLATION CHECK</b>

	AX = 2080h
Return: AH = 00h if resident (normal DOS return would be AX = 2000h)
SeeAlso: INT 21/AX=18FFh"VIRUS",INT 21/AX=2C2Ch"VIRUS"
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