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

	AX = 6303h
Return: BX = 6303h if resident
SeeAlso: AX=5643h"VIRUS",AX=6304h"VIRUS",AX=9AD5h"VIRUS"
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