INT 16h,  02h (2)        Get Shift Status                                 all
 
    Returns the current keyboard shift status.
 
       On entry:      AH         02h
 
       Returns:       AL         Shift status
 
  --------------------------------------------------------------------------
 
               Shift Status (AL)
               7 6 5 4 3 2 1 0
               1 . . . . . . .      Insert locked
               . 1 . . . . . .      Caps Lock locked
               . . 1 . . . . .      Num Lock locked
               . . . 1 . . . .      Scroll Lock locked
               . . . . 1 . . .      Alt key is pressed
               . . . . . 1 . .      Ctrl key is pressed
               . . . . . . 1 .      Left Shift key is pressed
               . . . . . . . 1      Right Shift key is pressed
 
       Notes:         This shift status byte is obtained from the byte at
                      memory location 0:0417h.
 
                      See Service 12h to obtain the shift status for the
                      enhanced (101/102-key) keyboard.

Seealso:


 INT 16h, 12h