Looks like this might be a lingering symptom from the trouble we went through in February. Some old theads with links to even older threads don't go anywhere. specifically this thread. Look at post #9. Try to follow the link 1MegXT thread. I get a 404 error because it points to "http://www.vintage-computer.com/vcforum/showthread.php?28128-HIMEMV2-or-equivillent-PROM" which was obviously on the old forum and is not getting forwarded.