Very nice explanation. Thanks! I'm trying to modify a Phoenix BIOS that has the pwd hardcoded inside. I can see the same STRING000.rom that was mentioned and I found the table, remove the header, etc. With this, I can see which offset is each text.No I would like to understand which part of the code show the messages like INVALID PASSWORD so I can see what it compares to. Some advice about how this can be done. I know IDA reasonably well, but all these modules are separated, so I'm not sure how one calls the other.