Category: <b>serial I/O</b>
<p>
<pre><b>INT 14 - Digiboard DigiCHANNEL PC/X* - SEND BIOS COMMAND</b>

	AH = 18h
	ES:BX -&gt; 16-byte command string
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    80h timeout
	AL = mailbox status
	    00h no errors
	    8Xh BIOS error
	ES:BX buffer filled in with mailbox string
	ZF clear if no errors
	ZF set if either status byte contains an error code
SeeAlso: AH=16h"Digiboard"
</pre>