Category: <b>DESQview/TopView and Quarterdeck programs</b>
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<pre><b>INT 15 - TopView - "FREEBIT" - UNDEFINE A 2ND-LEVEL INTERRUPT HANDLER</b>

	AX = 1014h
	BX = bit mask from INT 15/AX=1013h
Return: nothing
SeeAlso: AX=1013h,AX=1015h
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