How to replace bits that are not different?

Question

reverse engineering

Good afternoon dear programming gurus. I have a problem with some tasks and I want to make it a little easier for myself. There are two files which I am comparing. Eeprom files and I need to perform some editing functions. I use 010 editor which has the ability to add C++ scripts.

The problem is that there are two files and when I compare them there are values ​​that differ. I need to replace values ​​that are the same with hex number 23. I can't find the relevant section on this forum so I'm asking for help here. Maybe there are internal software mechanisms that will help me with this. Thank you all in advance.