INT 14 - SERIAL - READ CHARACTER FROM PORT
AH = 02h
DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
Return: AH = line status (see AH=03h)
AL = received character if AH bit 7 clear
Note:   will timeout if DSR is not asserted, even if function 03h returns
data ready
SeeAlso: AH=02h"FOSSIL",AH=84h,AH=FCh

See also: 1401

1402 - SERIAL - READ CHARACTER FROM PORT