Category: <b>serial I/O</b>
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<pre><b>INT 14 - COMM-DRV - EXTENDED INITIALIZATION</b>

	AH = 81h
	BX:DI -&gt; port control block (see <a href=../../it/67/3.html>#00367</a>)
	DX = port number
Return: AH = line status register (see <a href=../../it/04/3.html>#00304</a>)
	    error if bit 7 set
	AL = modem status register (see <a href=../../it/05/3.html>#00305</a>)
Program: COMM-DRV is a universal serial communications driver by Willies'
	  Computer Software Company, which supports standard INT 14 and
	  FOSSIL calls as well as its own interfaces
Note:	AX=8001h should be called first to fill in the port control block
SeeAlso: AH=00h,AX=8001h,AH=82h"COMM-DRV",AH=86h"COMM-DRV"

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