INT 62 u - FGDRIVER v3.03 - "FG_WAITKEY" - FLUSH KEYBOARD BUFFER AND AWAIT KEY
        AX = 00ADh
Return: after next key pressed
Note:   For FGDRIVER v1.10, this function was unused; "FG_WAITKEY" was AX=006Dh
SeeAlso: AX=000Ah,AX=003Ah,AX=0051h,AX=0054h,INT 16/AH=00h

.