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4 . Assume that there are no pipeline stalls and that the breakdown of executed instructions is as follows for the processor shown in the
Assume that there are no pipeline stalls and that the breakdown of executed instructions is as
follows for the processor shown in the Figure below:
add addi not beq lw sw
In what fraction of all cycles is the shiftleft unit used?
The shift left unit is used only for branch instructions:
In what fraction of all cycles is the input of the signextend circuit needed?
addi, beq, not, lw sw:
What is the utilization of the second input data port of the ALU?
The second input port of the ALU is used in all instructions except the unconditional branch
instruction jal for example where the ALU does not need to determine if a branch is to be
taken.
add, addi, not, beq, lw sw
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