I am trying to get my MicroVAX II working, and now, thanks to a generous person on this list, I have a working CPU and Memory combination. I am now trying to run the MicroVAX II diagnostics from the TK50 diagnostics tape that came with the machine. The puzzling thing is that it does not seem to display the correct configuration and devices when I select that option from the menu. Here is what it says: SYSTEM CONFIGURATION AND DEVICES SYSTEM CONFIGURATION CPUA ... MicroVAX CPU KA630-AA 1MB, FPU MC=00 HW=00 Press the RETURN key to return to the previous menu. > I have never used these diagnostics before so I don't know what should be displayed. However I also have in there the following devices: Two memory boards. M7559 - TK70 controller. Known to be working as that is what I booted the diagnostics from. M3106 - DZQ11 Asynchrnous Multiplxer (4 lines) M7555 - RQDX3 Disk Controller DEQNA - Known to be working as I can do partial network boots (fails for other reasons yet to be determined) So, the question is, should I expect to see these devices listed, should I expect it to tell me how much memory is installed? If I am not seeing the devices listed and they are known to work, why would they not appear? I suspect that the M7559 might not appear as it controls a TK70 and this MicroVAX II probably predates that device. I ran the diagnostic tests and it tested only the CPU, which passed the tests. Thanks Rob