Category: <b>virus/antivirus</b>
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<pre><b>INT 21 - VIRUS - "1067"/"Headcrash" - GET ORIGINAL INT 21h VECTOR</b>

	AX = 58DDh
Return: CX = code segment of virus
	ES:BX = old INT 21h vector
SeeAlso: AX=5252h,AX=58CCh,AX=6969h
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