Int 15 Fn BA20  - Hp Omnishare - Standby.com - Installation Check          [p]

   AX = BA20h

Return: CF clear if successful (installed)
   CF set on error (not installed)

Notes: The display controller can enter a standby mode after a given timeout,
     to conserve power or (for the OmniShare) to increase the life of
     the backlight.
   A side effect of standby mode is that the communications LED turns on
     automatically when the display is in standby mode.  This is done in
     hardware, and is intended to show that the unit is still on.

See Also: AX=BA10h,AX=BA20h,AX=BA22h,AX=BA24h,AX=BA26h