ter 
  is set. To set the 'I' flag, use the set 'I' command, STI. To clear the 'I' 
  flag, use the clear 'I' command CLI. </p>
<p>Hardware interrupts can be trapped in the same way that software interrupts 
  can.</p>
<p>Hardware interrupts are triggered, as needed by disk drives, printers, key 
  presses, mouse movements and other hardware events.</p>
<p>This scheme makes processing more efficient. Without interrupts, the CPU would 
  have to poll the hardware devices at regular time intervals to 