Name: Date:
HW11
(20 points) We wish to add a variant of the lw (load word) instruction, which increments the index register after loading the word from memory. This instruction (l_inc) corresponds to the following two instructions:
lw rd, L(rs1)
addi rs1, rs1, 4Add any necessary datapaths and control signals to the single-cycle datapath of Figure 4.21, on page 277.
- Write the RTL for this new instruction. It may be helpful to review the RTL on the course website.
- Adjust the datapth figure (attached) to execute your RTL. Make modifications as you see reasonably fit. This may include but not limited to adding extra muxes, adders, or ports.
- Provide an updated set of control signals that corresponds to the datapath adjustments you made in the previuos problem. You may add signals to this table as necessary.
| Instruction name | ALUSrc | ALUOp | MemtoReg | RegWrite | MemRead | MemWrite |
|---|---|---|---|---|---|---|
Modify this figure for your instruction.
