I'm stuck and don't have anything to compare to to know if what I"m looking at is good or not.
Got my 8800c all together, currently using the standard recommended boards. When I turn it on, I get all the data lights on, and some random amount (usually all or most) address lights on. None of the status lights are on. None of the front panel switches do anything.
Probing around the bus and CPU card, I don't get a square wave on the clock, Phi 1 or Phi 2 lines. No square wave at the CPU Phi inputs.
I understand you can't just measure the output of a crystal so I don't know what I should be seeing where. The crystal has about 1.25V going in and just millivolts coming out. That reads as a continuous low and propagates through the clock circuit as such so I get Phi 1 and Phi 2 always low and /CLOCK is about 3.6V on the bus.
I've tried 2 crystals. Looks the same. Tried another inverter which bumped the High output to 4.5V but still no square wave.
I'm assume absolutely nothing can work without a clock. Am I really 0-2 on crystals or can there be something else?