Write MIPS instruction sequences to perform the following operations.

Do not use pseudoinstructions. $($That means no LI$,$ MOVE, etc.$)$

In addition to OR$,$ ORI, AND, and ANDI, the MIPS ISA also has NOR $($R$-$Type$),$ XOR

$($R$-$Type$)$ and XORI $($I$-$Type$).$ Make the best use of all logical instructions.

Remember that I$-$type instructions are limited to the lower $16$ bits $($max $0$xFFFF$).$ Use

LUI if you need to load data into the upper $16$ bits to make a $32-$bit constant.

For full credit you must use a minimum length sequence.

For each operation, the input and output register is specified. Use the $t registers if

other registers are needed.

Express any constants in hex or binary $($e$.$g$.0$x$31$C$2$ or $0$b$0011000111000010)$

a$)$ Extract byte $2($bits $16$ to $23)$ of the value stored in $$s0,$ placing it in the low order

byte $($bits $0$ to $7)$ of $$s1.$ All other bits should be $0.(2$ instructions$)$

b$)$ Clear bits$|12$ to $15$ of $$s0$ to $0($modify $$s0$ in place$).$ Leave the other bits unmodified.

$(3$ instructions and use of a temporary register$)$ Remember that logical instructions

$($andi$,$ ori, etc.$)$ always extend the $16-$bit immediate data with $0\text{'}$s$.$

c$)$ Set bits $22$ and $23$ of $$s0$ to $1($modify $$s0$ in place$).$ Leave the other bits unmodified.

$(2$ instructions and use of a temporary register$)$

d$)$ Invert the even bits $($bit $0,2,4,6,.\mathrm{.}30)$ of $ s$0.$ Leave the odd bits unmodified. $(3$

instructions and use of a temporary register$)$