Int 15 Fn BA22  - Hp Omnishare - Standby.com - Get Standby Duration        [p]

   AX = BA22h

Return: CF clear if successful
      BL = standy duration in minutes (01h-0Fh), or 00h if disabled
   CF set on error (function not supported)

Note:  The actual timeout with a GD6205 controller is ((N*64)-32) seconds,
     instead of (N*60) seconds as documented.

See Also: AX=BA20h,AX=BA21h