Category: <b>virus/antivirus</b>
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<pre><b>INT 21 - VIRUS - "90210" - INSTALLATION CHECK</b>

	AX = DEADh
Return: AX = AAAAh if resident
SeeAlso: AH=DEh"April 1st",AX=DEADh"Shifting",AX=DEDEh"VIRUS"
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