Each line labeled with "R" in the figure below represents a request line from a device to a centralized bus arbiter that issues grants based on relative priority. Each line labeled with "G" represents a grant line. The number in black represents priorities from the highest 3 down to the lowest 1.
a) If all 4 devices (A,B,C and D) simultaneously assert their bus request lines, in what order will they receive a grant? List the device names (A,B,C or D) in the order in which they will be granted access to the bus.
b) If device A malfunctions and stops operating, what effect would its failure have on the system?
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