Do you happen to have a doc with the addresses noted in, or is it more looking up previous work to find stuff?
A bit of both, actually. Funnily enough I started out a spreadsheet on Excel, then my trial ran out and I'm too cheap to buy a copy of office so I just keep opening it in read-only mode.
Whatever I can't find on the spreadsheet I dive into my debugger which has lots of comments on various addresses.
What is bit 4 about NFITC1? I noticed 08 was always set.
It could be one of three things: active actor (animations/effects/scripts run), active target (can be targetted), something else I can't remember related to vulnerability.
It's AI address 4023 and that's usually unset in boss death scripts IIRC. 4020 and 4022 are unset on death as well so those would be the other two.
EDIT:
Bit 4 would be 10h. 8 is bit 3. 8 I have listed as "Enabled" which means they can be targeted. For allies this is active as long as they are not imprisoned since you can target "dead" allies.