Quote:
Originally Posted by john_newcombe
The SVC has been tested successfully in my rack system by replacing the rack's IVC card. So... looking at the GM813 I see no activity on the Address or Data bus.
Investigations so far show that the clock signal when viewed at the CPU looks good and that the system is not held at reset nor in a halted state.
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I'm not sure that I completely understand the problem yet, but when you say the GM813 shows no data or address activity, do you mean no activity at the processor's address and data pins, or no activity at the card edge connector? If the former, have you tried replacing the processor chip?