INT 14 - IBM/Yale EBIOS SERIAL I/O - BUFFERED READ
AX = FF02h
CX = length
DX = port (00h-03h)
ES:BX -> buffer
Return: CX = number of characters read
SeeAlso: AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh

See also: 1418

14FF02 - IBM/Yale EBIOS SERIAL I/O - BUFFERED READ