glitch
Veteran Member
I've scanned in the (copy of a copy) OSI PROM Monitor instructions sheets for both the 65V monitor (Challenger I) and 65A monitor (Challenger II and III, OSI-510 CPU board):
http://filedump.glitchwrks.com/manuals/OSI/OSI PROM Monitor.pdf
http://filedump.glitchwrks.com/manuals/OSI/OSI PROM Monitor.pdf