Category: <b>serial I/O</b>
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<pre><b>INT 14 - MBBIOS - GET/SET OPTIONS</b>

	AH = 09h
	AL = option byte (see <a href=../../it/37/3.html>#00337</a>)
	DX = port number???
Return: AL = old option byte
SeeAlso: AH=00h"MBBIOS",AH=04h"MBBIOS",AH=10h"FOSSIL"

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