You should see 3.5mhz at the cpu pin 6. Also do you have a logic probe? if not very easy to make its just a couple of led's and transistors, have a look at example 3 hear for a simple one to make
http://www.eleccircuit.com/many-logi...circuit-ideas/ with this you can have a look see what is running on the ULA CPU RAM and ROM. Im hopeing its somthing other than the ULA. least all your IC's appear to be socketed.
Jay