INT 14 - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT
AH = FCh
DX = port (00h-03h)
Return: AH = RS232 status bits (see AH=00h)
AL = character
SeeAlso: AH=0Ch,AX=FF02h

See also: 1402

14FC - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT