Int 15 Fn 5306  - Advanced Power Management V1.0+ - Cpu Busy               [p]

   AX = 5306h

Return: CF clear if successful
   CF set on error
       AH = error code (03h,0Bh) (see #0399)

Notes: called to ensure that the system runs at full speed even on systems
     where the BIOS is unable to recognize increased activity (especially
     if interrupts are hooked by other programs and not chained to the
     BIOS)
   this call may be made even when the system is already running at full
     speed, but it will create unnecessary overhead
   should not be called from within a hardware interrupt handler to avoid
     reentrance problems

See Also: AX=5305h