INT 15 - IBM BIOS - SMART ENERGY SYSTEM - GET PROCESSOR SPEED AX = 2305h Return: CF clear if successful AL = processor speed in MHz CF set on error AL = FFh (speed unknown or >80 MHz) AL = error code (80h,86h = unsupported function) Note: IBM classifies this function as optional SeeAlso: AX=2301h,AX=2304h,AH=BCh