Many thanks to a member for selling me two 27C400 UV EPROMS, programed with ST-11 ROM code, for my STRIDER board. Either one of these replacement chips make my STRIDER board work great.
-----
Order Filled: No longer accepting offers for a ST-11 replacement eprom chip for a STRIDER board at this time.
Still accepting offers for a working, Big Black ST-11 MASK ROM chip from a STRIDER board at this time.