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

	AH = 01h
	AL = character to write
	DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH bit 7 clear if successful
	AH bit 7 set on error
	AH bits 6-0 = port status (see <a href=../../it/04/3.html>#00304</a>)
Notes:	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=02h,AH=0Bh"FOSSIL",AX=8000h"ARTICOM",AH=89h,MEM 0040h:007Ch
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