Quiz submission record for quiz6-1-1 at Mon Jul 26 09:46:08 2004:

Your Answer for Question 1:
Without pipelining the control, the processor would not run properly.  For example, the PCsrc helps choose the appropriate next register at the right time.  Without it,  things could happen at undefined times.  It could go to the next instruction at the wrong time during a beq instruction.


Your Answer for Question 2:
The first value comes from the Registers coming out of the ID/EX phase.  The second value comes from the output of the ALU after the EX/MEM stage.  The Last value comes out of the Data Memory after the Mem/WB stage.
Forward Registers:
lw $5,0(4)
add $3,$4,$5
Forward ALU output:
add $1,$2,$3
add $4,$1,$5
Forward Data Memory:
sw $6,0($4)
lw $3,0($6)Without pipelining the control, the processor would not run properly.  For example, the PCsrc helps choose the appropriate next register at the right time.  Without it,  things could happen at undefined times.  It could go to the next instruction at the wrong time during a beq instruction.
Without pipelining the control, the processor would not run properly.  For example, the PCsrc helps choose the appropriate next register at the right time.  Without it,  things could happen at undefined times.  It could go to the next instruction at the wrong time during a beq instruction.


Your Answer for Question 3:
A pipeline interlock is used to detect a hazard and insert bubbles until the hazard is cleared.  A bubble is stopped from being inserted over and over by being able to turn on and off the PC update.



Your unique submission ID is quiz6-1-1-cs61c-av-1090860368-3168.