INT 14 - MultiDOS Plus - INITIALIZE PORT
AH = 20h
AL = port parameters (see AH=00h"SERIAL")
DX = port number (0-3)
Return: AH = status
00h successful
41h no such port
64h monitor mode already active
SeeAlso: AH=04h"MultiDOS",AH=21h"MultiDOS",AH=23h"MultiDOS"

See also: 1400

1420 - MultiDOS Plus - INITIALIZE PORT