Category: <b>serial I/O</b>
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<pre><b>INT 14 - Digiboard DigiCHANNEL PC/X* - SPECIAL CHARACTER INTERRUPT</b>

	AH = 19h
	BL = flag
	    00h disable special character interrupt
	    FFh enable interrupt
	DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
	    00h successful
	    FFh failed
SeeAlso: AH=1Ah"Digiboard"
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