Multi-cycle datapath

MUX example 1:

One memory is used for instructions and data, so we need a MUX to select between:

PC (instruction)

ALUout (data)

for address to access in memory

Where else? (Hint: Consider ALU)

MUX example 2:

One ALU is used to perform all arithmetic and logic operations, so we need a MUX

to select first operand between

PC

Data register A

Also, for second operand:

Data register B

Sign-extended immediate

Sign-extended/shifted immediate (offset for branch)

Constant 4 (incrementing PC)