Yeah, sure, or if the methods are documented, I can try them. Looks like it will get here Tuesday. I'll check some other devices I already have and see if any of them use either of those chips.
I also picked up some TI calcs: TI-57 LCD, TI-55 and "The MBA". I'm not sure how similar the TI-57 LCD code is to the TI-57 (there could be some differences because the LCD calc has constant memory), but the TI-55 and The MBA use the same chip as the TI-57.