I have a set of Eproms from an ACC-850 repeater controller and no longer have the controller. I guess you can erase them and reuse the EEPROMS and NO - I do not know the number and don't want to pull the label to find out.
They are marked U8 - U15 -U16 - U17. I think version 3.8 was the latest available. No charge for the chips.... they are in a small box - just cover the postage to your QTH. Ron