Category: <b>serial I/O</b>
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<pre><b>INT 14 - SERIAL - READ CHARACTER FROM PORT</b>

	AH = 02h
	AL = 00h (ArtiCom)
	DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
Return: AH = line status (see <a href=../../it/04/3.html>#00304</a>)
	AL = received character if AH bit 7 clear
Notes:	will timeout if DSR is not asserted, even if function 03h returns
	  data ready
	various network and serial-port drivers support the standard BIOS
	  functions with interrupt-driven I/O instead of the BIOS's polled I/O
	the 1993/04/08 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=01h,AH=02h"FOSSIL",AH=84h,AH=FCh
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