Int 15 Fn BA11  - Hp Omnishare - Pen Driver - Set The Communication Led S  [n]

   AX = BA11h
   BL = new LED state (00h steady, 01h flashing)

Return: CF clear if successful
   CF set on error

Note:  this function is for use by communication software to give visual
     feedback of active communications even if the display is in standby
     mode.

See Also: AX=BA10h,AX=BA24h