Category: <b>serial I/O</b>
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<pre><b>INT 14 - SERIAL - INITIALIZE PORT</b>

	AH = 00h
	AL = port parameters (see <a href=../../it/00/3.html>#00300</a>)
	DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see <a href=../../it/04/3.html>#00304</a>)
	    FFh if error on Digiboard XAPCM232.SYS
	AL = modem status (see <a href=../../it/05/3.html>#00305</a>)
Notes:	default handler is at F000h:E739h in IBM PC and 100% compatible BIOSes
	since the PCjr supports a maximum of 4800 bps, attempting to set 9600
	  bps will result in 4800 bps
	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
	the default setting used by DOS (MS-DOS 6, DR-DOS 7.03, PTS-DOS) when
	  (re-)initializing the serial devices is AL=A3h (2400 bps, no parity,
	  1 stop bit, 8 data bits).
SeeAlso: AH=04h"SERIAL",AH=04h"MultiDOS",AH=05h"SERIAL",AH=57h
SeeAlso: AX=8000h"ARTICOM",AH=81h"COMM-DRV",AH=82h"COURIERS",AH=8Ch
SeeAlso: MEM 0040h:0000h,PORT 03F8h"Serial"

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