A stuck at fault in the control logic or in the IO interface.
A single "stuck at" fault that would disable a whole chip that is completely 4-way redundand?
You are incompetent.
The above is the proof.
Mind making a thread comparing KnC, HF, BF, Avalon, Labcoin, BTCGarden, Cointerra, xCrowd etc?
To have your comments somewhere concentrated, you seem very knowledgable..