$1.$ Show the machine code for the branch not equal $($bne$)$ instruction in the following program. $($PC Relative Addressing$)$

# MIPS assembly code

$0$x$40$ loop: add $t$1,$ $a$0,$ $s$0$

$0$x$44$ lb $t$1,0($$t$1)$

$0$x$48$ add $t$2,$ $a$1,$ $s$0$

$0$x$4$C sb $t$1,0($$t$2)$

$0$x$50$ addi $s$0,$ $s$0,1$

$0$x$54$ bne $t$1,$ $$0,$ loop

$0$x$58$ lw $s$0,0($$sp$)$

a$)$ What addressing type does the bne instruction use?

b$)$ Calculate the immediate field and write the machine code in binary and hex.

$2.$ Convert the following I type instructions from MIPS to Machine code. $($base addressing$)$

a$)$ lw $s$0,12($$t$0)$

$3.$ Convert the following I type instructions from MIPS to Machine code. $($immediate addressing$).$

a$)$ addi $t$0,$ $t$1,25$

b$)$ andi $t$0,$ $t$1,0$xABCD$1234$

$4.$ Machine to MIPS Code. Assume PC $=0$x $40404040.$ Find where the address where the label named "target" is located.

a$)00001101000000000000000000000101$