We often see the word "reservation" when we look at the interrupt vector table in the DOS era. But who knows it? The reservation representing the DOS era is an absolute control of the machine. In the Windows era, it may represent the conspiracy of unknown features and software ... "reserved" in my opinion, I have the following mean: 1. Engineers have increased space for software features. 2. Unknown features 3. Back door (although I don't want to think so, it is true) Do you think?
(Please continue to pay attention to the reservation under the DOS)