$.$A$.$ Our "MIPS core instruction subset" is defined as the following group of

instructions:

add, sub, and, or$,$ slt$,$ lw$,$ sw$,$ beq & j$.$ List all of the control bits required for

this MIPS core instruction subset on the single$-$cycle datapath and explain

the purpose of each control bit.

B$.$ Some MIPS instructions use the low $16$ bits within the machine instruction

as a displacement or immediate operand. For each of the instructions listed

below, explain whether the instruction uses a $16-$bit displacement or immediate

operand and whether it sign$-$extends or zero$-$extends the $16-$bit value.

jr

addiu

addi

ori

lui

andi