Int 4A Fn 02  - Ti Professional Pc - Keyboard - Get Keyboard Mode          [b]

   AH = 02h

Return: AL = shift states (see #2884)

See Also: AH=00h,AH=02h,AH=03h,AH=04h,AH=05h,INT 16/AH=02h

Bitfields for TI Professional PC keyboard shift states:
Bit(s) Description (Table 2884)
 0 Ctrl key pressed
 1 Alt key pressed
 2 either Shift key pressed
 3-6   0
 7 CapsLock is ON