Int 21 Fn F2  - Doubledos - Send Character To Keyboard Buffer Of Other Jo  [T]

   AH = F2h
   AL = character

Return: AL = status (see #2546 at INT 2F/AX=7A20h/BX=0000h)
       00h successful
       01h buffer full (128 characters)

See Also: AH=E2h"DoubleDOS",AH=F1h"DoubleDOS",AH=F3h"DoubleDOS"

See Also: AH=F8h"DoubleDOS"