INT 21 - DoubleDOS - ADD CHARACTER TO KEYBOARD BUFFER OF CURRENT JOB
AH = E3h
AL = character
Return: AL = 00h successful
01h buffer full (128 characters)
SeeAlso: AH=E2h"DoubleDOS",AH=E8h"DoubleDOS"

See also: 21E1

21E3 - DoubleDOS - ADD CHARACTER TO KEYBOARD BUFFER OF CURRENT JOB