Question 4 (1.5 points)
Consider the following instruction: LWI rt, rs
Interpretation: R[rt] <-MEM[R[rs]]
This is similar to LW instruction with no offset.
a. Which new functional blocks (if any) do we need for this instruction? By new
functional block, we mean if we need new adder, new multiplexer or new sign
extender.
b. What new signals do we need (if any) from the control unit to support this
instruction?
Note: Type your answer in the box below. If no new blocks/signals are required then
just type "none".