Would you like to try my Williams Test ROM? It includes tests for sockets IC14,20 and 26 and does a more thorough testing of the memories. Leon's test ROM is a bit unreliable with that. Send me a PM for the images if you are interested.
Marco
The video is obsolete already because I changed the timing and also included IRQ generator tests.....(is there a pulse at pin 4 at the 6802?)