Event Bits vs. Memory Address

I don't know if that's it. I searched all of Narshe, Figaro, and South Figaro for NPCs affected by Memory Address 1E89:0, and fond none. In fact, most of the Memory addresses for NPCs didn't seem to be covered by Novalia Spirit's document.

Take for example, the ghost at the entrance of Zozo that explains how to use Espers. He shows when Memory Address 1EF0:5 is set, which I believe is Event Bit $385 This is not covered in Novalia's document, and when I look at the event that sets it via ZoneDoctor (the only real event editor I have), it is set by hex D6-85, with the description of
"Set event bit $1E80($3..."
"Address: 1E90"
"Bit: 5"

Now, I know that ZoneDoctor is not to be trusted for anything. I'm just trying to figure out how to get from the hex or event bit number to the memory address.