How to Read 6 Inputs anytime ?

[sayzer]

So, you do not need a "change" on the pins.

You have buttons and they can only be pressed, right?

"Change" means =>
If the button is pressed, there is a change. While the button is being pressed, there is no change.
If the button is released, there is also a change.


Are you sure you need interrupt to do this? any particular reason? Many people can solve their issues without using interrupt; simple pin readings can be more then good enough. This may be true in your case, may be.

You may want to check the status of a port for all six pins.